Import dgedit from drumgizmo repository (split into its own project).

38 files changed, 4554 insertions, 0 deletions

diff --git a/src/Makefile.am b/src/Makefile.am
new file mode 100644
index 0000000..734152c
--- /dev/null
+++ b/src/Makefile.am
@@ -0,0 +1,73 @@
+bin_PROGRAMS = dgedit
+
+dgedit_LDADD = $(SNDFILE_LIBS) $(QT_LIBS) $(AO_LIBS) \
+	$(shell ../tools/MocList o ) qrc_dgedit.o 
+
+dgedit_CXXFLAGS = $(SNDFILE_CXXFLAGS) $(QT_CFLAGS) $(AO_CFLAGS)
+AM_CXXFLAGS = $(QT_CFLAGS)
+
+dgedit_SOURCES = \
+	dgedit.cc \
+	audioextractor.cc \
+	canvas.cc \
+	canvastool.cc \
+	canvastoollisten.cc \
+	canvastoolselections.cc \
+	canvastoolthreshold.cc \
+	canvaswidget.cc \
+	filelist.cc \
+	itemeditor.cc \
+	mainwindow.cc \
+	mipmap.cc \
+	player.cc \
+	samplesorter.cc \
+	selection.cc \
+	selectioneditor.cc \
+	volumefader.cc \
+	zoomslider.cc
+
+EXTRA_DIST = \
+	audioextractor.h \
+	canvas.h \
+	canvastool.h \
+	canvastoollisten.h \
+	canvastoolselections.h \
+	canvastoolthreshold.h \
+	canvaswidget.h \
+	filelist.h \
+	itemeditor.h \
+	mainwindow.h \
+	mipmap.h \
+	player.h \
+	samplesorter.h \
+	selection.h \
+	selectioneditor.h \
+	sleep.h \
+	volumefader.h \
+	zoomslider.h \
+	dgedit.qrc
+
+dgedit_MOC = $(shell ../tools/MocList cc )
+
+BUILT_SOURCES = $(dgedit_MOC) qrc_dgedit.cc
+
+CLEANFILES = $(BUILT_SOURCES)
+
+qrc_%.cc: %.qrc
+	rcc $< > $@
+
+%.moc.cc: %.h
+	$(QT_MOC) -o $@ $<
+
+#
+# ui files not used in this project...
+#%.h: %.ui
+#	$(QT_UIC) -o $@ $<
+#
+#%.cc: %.ui
+#	$(QT_UIC) -o $@ -impl $*.h $<
+
+# command for creating .res file from .rc on Win32
+%.res: %.rc
+	rc $<
+
diff --git a/src/audioextractor.cc b/src/audioextractor.cc
new file mode 100644
index 0000000..71e0b2a
--- /dev/null
+++ b/src/audioextractor.cc
@@ -0,0 +1,283 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            audioextractor.cc
+ *
+ *  Sat Nov 21 13:09:35 CET 2009
+ *  Copyright 2009 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of DrumGizmo.
+ *
+ *  DrumGizmo is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  DrumGizmo is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with DrumGizmo; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#include "audioextractor.h"
+
+#include <QDomDocument>
+#include <QFile>
+#include <QDir>
+#include <QApplication>
+
+#include <sndfile.h>
+
+#define INSTRUMENT_VERSION "2.0"
+
+typedef struct {
+  SNDFILE *fh;
+  float *data;
+} audiodata_t;
+
+AudioExtractor::AudioExtractor(Selections &s, QObject *parent)
+  : QObject(parent), selections(s)
+{
+}
+
+void AudioExtractor::exportSelections()
+{
+  emit setMaximumProgress(selections.ids().size() + 1/* for xml writing*/);
+  int progress = 0;
+  emit progressUpdate(progress++);
+  qApp->processEvents();
+
+  // Open all input audio files:
+  audiodata_t audiodata[audiofiles.size()];
+
+  int idx = 0;
+  AudioFileList::iterator j = audiofiles.begin();
+  while(j != audiofiles.end()) {
+    QString file = j->first;
+
+    SF_INFO sf_info;
+    audiodata[idx].fh = sf_open(file.toStdString().c_str(), SFM_READ, &sf_info);
+    if(!audiodata[idx].fh) {
+      printf("Load error '%s'\n", file.toStdString().c_str());
+      return;
+    }
+
+    audiodata[idx].data = NULL;
+
+    j++;
+    idx++;
+  }
+  
+  idx = 1;
+  QVector<sel_id_t> sels = selections.ids();
+
+  // Sort selections by velocity
+  for(int v1 = 0; v1 < sels.size(); v1++) {
+    for(int v2 = 0; v2 < sels.size(); v2++) {
+
+      Selection sel1 = selections.get(sels[v1]);
+      Selection sel2 = selections.get(sels[v2]);
+
+      if(sel1.energy < sel2.energy) {
+        sel_id_t vtmp = sels[v1];
+        sels[v1] = sels[v2];
+        sels[v2] = vtmp;
+      }
+    }
+  }
+
+  // Iterate and write audio files
+  QVector<sel_id_t>::iterator si = sels.begin();
+  while(si != sels.end()) {
+    Selection sel = selections.get(*si);
+    size_t offset = sel.from;
+    size_t size = sel.to - sel.from;
+    size_t fadein = sel.fadein;
+    size_t fadeout = sel.fadeout;
+
+
+    // Read all input audio file chunks:
+    for(int i = 0; i < audiofiles.size(); i++) {
+
+      // Clear out old buffer (if one exists)
+      if(audiodata[i].data) {
+        delete audiodata[i].data;
+        audiodata[i].data = NULL;
+      }
+
+      SNDFILE *fh = audiodata[i].fh;
+
+      sf_seek(fh, offset, SEEK_SET);
+
+      float *data = new float[size];
+      sf_read_float(fh, data, size); 
+
+      // Apply linear fadein
+      for(size_t fi = 0; fi < fadein; fi++) {
+        float val = ((float)fi / (float)fadein);
+        if(fi < size) data[fi] *= val;
+      }
+
+      // Apply fadeout
+      for(size_t fo = 0; fo < fadeout; fo++) {
+        float val = 1.0 - ((float)fo / (float)fadeout);
+        if( (((size - fadeout) + fo) < size) &&
+            (((size - fadeout) + fo) >= 0) ) {
+          data[(size - fadeout) + fo] *= val;
+        }
+      }
+
+      audiodata[i].data = data;
+    }
+
+    // Create output path:
+    QString path = exportpath + "/" + prefix + "/samples";
+    QDir d;
+    d.mkpath(path);
+
+    // Write all sample chunks to single output file:
+    QString file = path + "/" + QString::number(idx) + "-" + prefix + ".wav";
+    
+    SF_INFO sf_info;
+    sf_info.format = SF_FORMAT_WAV | SF_FORMAT_FLOAT;
+    sf_info.samplerate = 44100;
+    sf_info.channels = audiofiles.size();
+
+    SNDFILE *ofh = sf_open(file.toStdString().c_str(), SFM_WRITE, &sf_info);
+    if(!ofh) {
+      printf("Open for write error...\n");
+      return;
+    }
+
+    for(size_t ob = 0; ob < size; ob++) {
+      float obuf[audiofiles.size()];
+      for(int ai = 0; ai < audiofiles.size(); ai++) {
+        obuf[ai] = audiodata[ai].data[ob];
+      }
+      sf_write_float(ofh, obuf, audiofiles.size()); 
+    }
+    sf_close(ofh);
+
+    idx++;
+    si++;
+
+    emit progressUpdate(progress++);
+    qApp->processEvents();
+  }
+
+  // Close all input audio files:
+  for(int i = 0; i < audiofiles.size(); i++) {
+    if(audiodata[i].data) {
+      delete audiodata[i].data;
+      audiodata[i].data = NULL;
+    }
+
+    sf_close(audiodata[i].fh);
+  }
+
+  QDomDocument doc;
+  QDomProcessingInstruction header =
+    doc.createProcessingInstruction("xml", "version='1.0' encoding='UTF-8'");
+  doc.appendChild(header); 
+
+  QDomElement instrument = doc.createElement("instrument");
+  instrument.setAttribute("version", INSTRUMENT_VERSION);
+  instrument.setAttribute("name", prefix);
+  doc.appendChild(instrument);
+
+  QDomElement samples = doc.createElement("samples");
+  instrument.appendChild(samples);
+
+  {
+  // Do the adding to the xml file one sample at the time.
+  int index = 0;
+  QVector<sel_id_t>::iterator si = sels.begin();
+  while(si != sels.end()) {
+    index++;
+
+    Selection i = selections.get(*si);
+    i.name = prefix + "-" + QString::number(index);
+
+    QDomElement sample = doc.createElement("sample");
+    sample.setAttribute("name", i.name);
+    sample.setAttribute("power", QString::number(i.energy));
+    samples.appendChild(sample);
+
+    selections.update(*si, i);
+
+    int channelnum = 1; // Filechannel numbers are 1-based.
+    AudioFileList::iterator j = audiofiles.begin();
+    while(j != audiofiles.end()) {
+
+      QString file = j->first;
+      QString name = j->second;
+
+      QDomElement audiofile = doc.createElement("audiofile");
+      audiofile.setAttribute("file", "samples/" + 
+                             QString::number(index) + "-" + prefix + ".wav");
+      audiofile.setAttribute("channel", name);
+      audiofile.setAttribute("filechannel", QString::number(channelnum));
+      sample.appendChild(audiofile);
+      channelnum++;
+      j++;
+    }
+
+    si++;
+  }
+  }
+  
+  QFile xmlfile(exportpath + "/" + prefix + "/" + prefix + ".xml");
+  xmlfile.open(QIODevice::WriteOnly);
+  xmlfile.write(doc.toByteArray());
+  xmlfile.close();
+
+  emit progressUpdate(progress++);
+  qApp->processEvents();
+}
+
+void AudioExtractor::addFile(QString file, QString name)
+{
+  QPair<QString, QString> pair;
+  pair.first = file;
+  pair.second = name;
+  audiofiles.push_back(pair);
+}
+
+void AudioExtractor::removeFile(QString file, QString name)
+{
+  AudioFileList::iterator j = audiofiles.begin();
+  while(j != audiofiles.end()) {
+    if(file == j->first/* && name == j->second*/) {
+      audiofiles.erase(j);
+      return;
+    }
+    j++;
+  }
+}
+
+void AudioExtractor::setOutputPrefix(const QString &p)
+{
+  prefix = p;
+}
+
+void AudioExtractor::setExportPath(const QString &path)
+{
+  exportpath = path;
+}
+
+void AudioExtractor::changeName(QString file, QString name)
+{
+  AudioFileList::iterator j = audiofiles.begin();
+  while(j != audiofiles.end()) {
+    if(file == j->first) {
+      j->second = name;
+      return;
+    }
+    j++;
+  }
+}
diff --git a/src/audioextractor.h b/src/audioextractor.h
new file mode 100644
index 0000000..ae50d17
--- /dev/null
+++ b/src/audioextractor.h
@@ -0,0 +1,66 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            audioextractor.h
+ *
+ *  Sat Nov 21 13:09:35 CET 2009
+ *  Copyright 2009 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of DrumGizmo.
+ *
+ *  DrumGizmo is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  DrumGizmo is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with DrumGizmo; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#ifndef __DRUMGIZMO_AUDIOEXTRACTOR_H__
+#define __DRUMGIZMO_AUDIOEXTRACTOR_H__
+
+#include <QObject>
+#include <QSet>
+#include <QLinkedList>
+#include <QString>
+#include <QVector>
+
+#include "selection.h"
+#include "samplesorter.h"
+
+typedef QLinkedList< QPair<QString, QString> > AudioFileList;
+
+class AudioExtractor : public QObject {
+Q_OBJECT
+public:
+  AudioExtractor(Selections &selections, QObject *parent);
+
+public slots:
+  void addFile(QString file, QString name);
+  void changeName(QString file, QString name);
+  void removeFile(QString file, QString name);
+
+  void exportSelections();
+  void setExportPath(const QString &path);
+  void setOutputPrefix(const QString &prefix);
+
+signals:
+  void progressUpdate(int value);
+  void setMaximumProgress(int value);
+
+private:
+  Selections &selections;
+  AudioFileList audiofiles;
+  QString exportpath;
+  QString prefix;
+};
+
+#endif/*__DRUMGIZMO_AUDIOEXTRACTOR_H__*/
diff --git a/src/canvas.cc b/src/canvas.cc
new file mode 100644
index 0000000..7007b0b
--- /dev/null
+++ b/src/canvas.cc
@@ -0,0 +1,285 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            canvas.cc
+ *
+ *  Tue Nov 10 08:37:37 CET 2009
+ *  Copyright 2009 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of DrumGizmo.
+ *
+ *  DrumGizmo is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  DrumGizmo is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with DrumGizmo; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#include "canvas.h"
+
+#include <sndfile.h>
+#include <QMouseEvent>
+#include <QPaintEvent>
+#include <QPainter>
+#include <QKeyEvent>
+
+#include <math.h>
+
+#define DEFYSCALE 200
+
+Canvas::Canvas(QWidget *parent)
+  : QWidget(parent)
+{
+  setAttribute(Qt::WA_StaticContents);
+  setMouseTracking(true);
+  setFocusPolicy(Qt::ClickFocus);
+
+  mipmap = NULL;
+
+  data = NULL;
+  size = 0;
+
+  xscale = 1.0;
+  yscale = 1.0;
+  xoffset = 0.0;
+  yoffset = 0.5;
+
+  colBg = QColor(180, 200, 180);
+  colSec = QColor(160, 180, 160);
+  colWavMax = QColor(100, 100, 100);
+  colWavAvg = QColor(0, 0, 0);
+  colMax = QColor(127, 127, 255);
+  colHalf = QColor(180, 180, 255);
+
+  setCursor(Qt::ArrowCursor);
+  
+  wav = QImage(width(), height(), QImage::Format_RGB32);
+}
+
+Canvas::~Canvas()
+{
+  if(data) delete[] data;
+  if(mipmap) delete mipmap;
+}
+
+void Canvas::load(QString file)
+{
+  if(data) {
+    delete[] data;
+    data = NULL;
+    size = 0;
+  }
+
+  if(mipmap) {
+    delete mipmap;
+    mipmap = NULL;
+  }
+
+  SF_INFO sf_info;
+	SNDFILE *fh = sf_open(file.toStdString().c_str(), SFM_READ, &sf_info);
+  if(!fh) {
+    printf("Load error...\n");
+    return;
+  }
+
+  size = sf_info.frames;
+
+  printf("Size: %u\n", (unsigned int)sf_info.frames);
+  data = new float[size];
+
+	sf_read_float(fh, data, size); 
+
+	sf_close(fh);
+
+  mipmap = new MipMap(data, size);
+
+  updateWav();
+  update();
+}
+
+
+#define SCALEX ((xscale * (float)size/(float)width()) + 0.1)
+#define OFFSETX (xoffset * (float)size)
+float Canvas::mapX(float x)
+{
+  float val = (x - OFFSETX) / SCALEX;
+  return val;
+}
+
+float Canvas::unmapX(float x)
+{
+  float val = x * SCALEX + OFFSETX;
+  return val;
+}
+
+#define SCALEY (yscale * height())
+#define OFFSETY (((float)height() / 2.0) + ((yoffset * 2.0 - 1.0) * SCALEY))
+float Canvas::mapY(float y)
+{
+  float val = OFFSETY + (y * SCALEY);
+  return val;
+}
+
+float Canvas::unmapY(float y)
+{
+  float val = (y - OFFSETY) / SCALEY;
+  return val;
+}
+
+void Canvas::mouseMoveEvent(QMouseEvent *event)
+{
+  for(int i = 0; i < tools.size(); i++) {
+    if(tools[i]->mouseMoveEvent(event)) return;
+  }
+
+  setCursor(Qt::ArrowCursor);
+}
+
+void Canvas::mousePressEvent(QMouseEvent *event)
+{
+  for(int i = 0; i < tools.size(); i++) {
+    if(tools[i]->mousePressEvent(event)) return;
+  }
+}
+
+void Canvas::mouseReleaseEvent(QMouseEvent *event)
+{
+  for(int i = 0; i < tools.size(); i++) {
+    if(tools[i]->mouseReleaseEvent(event)) return;
+  }
+}
+
+void Canvas::resizeEvent(QResizeEvent *event)
+{
+  for(int i = 0; i < tools.size(); i++) {
+    tools[i]->resizeEvent(event);
+  }
+
+  wav = QImage(width(), height(), QImage::Format_RGB32);
+  updateWav();
+  update();
+}
+
+void Canvas::getWavValues(int last, int lx, float *vu, float *vl,
+                          float *avgu, float *avgl)
+{
+  if(mipmap == NULL) return;
+
+  MipMapValue val = mipmap->lookup(last, lx);
+
+  *vu = val.max;
+  *vl = val.min;
+  *avgu = val.uavg;
+  *avgl = val.lavg;
+}
+
+void Canvas::updateWav()
+{
+  QPainter painter(&wav);
+
+  painter.setPen(colBg);
+  painter.setBrush(colBg);
+  painter.drawRect(0, 0, wav.width(), wav.height());
+
+  painter.setPen(colSec);
+  int step = 44100;
+  for(size_t i = 0; i < size; i += step) {
+    painter.drawLine(mapX(i), mapY(1.0), mapX(i), mapY(-1.0));
+  }
+
+  painter.setPen(colMax);
+  painter.drawLine(0, mapY(1.0), wav.width(), mapY(1.0));
+  painter.drawLine(0, mapY(-1.0), wav.width(), mapY(-1.0));
+
+  painter.setPen(colHalf);
+  painter.drawLine(0, mapY(0.5), wav.width(), mapY(0.5));
+  painter.drawLine(0, mapY(-0.5), wav.width(), mapY(-0.5));
+
+  if(data) {
+    int last = unmapX(0);
+    for(int x = 0; x < wav.width(); x++) {
+      int lx = unmapX(x);
+      if(lx > (int)size || lx < 0) break;
+      float vu = 0;
+      float vl = 0;
+      float avgu = 0;
+      float avgl = 0;
+
+      getWavValues(last, lx, &vu, &vl, &avgu, &avgl);
+      
+      int c = mapY(0.0);
+
+      painter.setPen(colWavMax);
+      painter.drawLine(x, c, x, mapY(vu));
+      painter.drawLine(x, c, x, mapY(vl));
+
+      painter.setPen(colWavAvg);
+      painter.drawLine(x, c, x, mapY(avgu));
+      painter.drawLine(x, c, x, mapY(avgl));
+
+      last = lx;
+    }
+  }
+}
+
+void Canvas::paintEvent(QPaintEvent *event)
+{
+  QPainter painter(this);
+
+  painter.drawImage(event->rect(),wav,event->rect());
+
+  for(int i = 0; i < tools.size(); i++) {
+    tools[i]->paintEvent(event, painter);
+  }
+} 
+
+void Canvas::keyReleaseEvent(QKeyEvent *event)
+{
+  for(int i = 0; i < tools.size(); i++) {
+    tools[i]->keyReleaseEvent(event);
+  }
+}
+
+void Canvas::setXScale(float scale)
+{
+  scale = (pow(100.0,scale) / 100.0) - (pow(100.0, 0.0)/ 100.0);
+  if(scale < 0.0) scale = 0.0;
+  if(scale > 1.0) scale = 1.0;
+  xscale = scale;
+  updateWav();
+  update();
+}
+
+void Canvas::setYScale(float scale)
+{
+  yscale = scale;
+  updateWav();
+  update();
+}
+
+void Canvas::setXOffset(float offset)
+{
+  if(offset < 0.0) offset = 0.0;
+  if(offset > 1.0) offset = 1.0;
+  xoffset = offset;
+  updateWav();
+  update();
+}
+
+void Canvas::setYOffset(float offset)
+{
+  if(offset < 0.0) offset = 0.0;
+  if(offset > 1.0) offset = 1.0;
+  yoffset = offset;
+  updateWav();
+  update();
+}
diff --git a/src/canvas.h b/src/canvas.h
new file mode 100644
index 0000000..c83a726
--- /dev/null
+++ b/src/canvas.h
@@ -0,0 +1,95 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            canvas.h
+ *
+ *  Tue Nov 10 08:37:37 CET 2009
+ *  Copyright 2009 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of DrumGizmo.
+ *
+ *  DrumGizmo is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  DrumGizmo is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with DrumGizmo; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#ifndef __DRUMGIZMO_CANVAS_H__
+#define __DRUMGIZMO_CANVAS_H__
+
+#include <QWidget>
+#include <QColor>
+#include <QImage>
+
+#include "mipmap.h"
+#include "canvastool.h"
+
+class Canvas : public QWidget {
+Q_OBJECT
+public:
+  Canvas(QWidget *parent);
+  ~Canvas();
+
+  void load(QString file);
+  
+  void addTool(CanvasTool *tool);
+
+  float mapX(float x);
+  float unmapX(float x);
+  float mapY(float y);
+  float unmapY(float y);
+
+public slots:
+  void setXScale(float scale);
+  void setYScale(float scale);
+  void setXOffset(float scroll);
+  void setYOffset(float scroll);
+
+protected:
+  void mouseMoveEvent(QMouseEvent *event);
+  void mousePressEvent(QMouseEvent *event);
+  void mouseReleaseEvent(QMouseEvent *event);
+  void resizeEvent(QResizeEvent *event);
+  void paintEvent(QPaintEvent *event);
+  void keyReleaseEvent(QKeyEvent *event);
+
+private:
+  MipMap *mipmap;
+
+  void updateWav();
+  void getWavValues(int last, int lx, float *vu, float *vl,
+                    float *avgu, float *avgl);
+
+  QImage wav;
+
+public:
+  float *data;
+  size_t size;
+
+  QVector<CanvasTool*> tools;
+
+private:
+  float xscale;
+  float yscale;
+  float xoffset;
+  float yoffset;
+
+  QColor colBg;
+  QColor colSec;
+  QColor colMax;
+  QColor colHalf;
+  QColor colWavMax;
+  QColor colWavAvg;
+};
+
+#endif/*__DRUMGIZMO_CANVAS_H__*/
diff --git a/src/canvastool.cc b/src/canvastool.cc
new file mode 100644
index 0000000..9d23d97
--- /dev/null
+++ b/src/canvastool.cc
@@ -0,0 +1,78 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            canvastool.cc
+ *
+ *  Thu Jul 28 23:01:36 CEST 2011
+ *  Copyright 2011 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of DrumGizmo.
+ *
+ *  DrumGizmo is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  DrumGizmo is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with DrumGizmo; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#include "canvastool.h"
+
+#include <stdio.h>
+
+bool CanvasTool::mouseMoveEvent(QMouseEvent *)
+{
+  return false;
+}
+
+bool CanvasTool::mousePressEvent(QMouseEvent *)
+{
+  return false;
+}
+
+bool CanvasTool::mouseReleaseEvent(QMouseEvent *)
+{
+  return false;
+}
+
+void CanvasTool::resizeEvent(QResizeEvent *)
+{
+}
+
+void CanvasTool::paintEvent(QPaintEvent *, QPainter &)
+{
+}
+
+void CanvasTool::keyReleaseEvent(QKeyEvent *)
+{
+}
+
+void CanvasTool::setActive(bool active)
+{
+  printf("setActive(%d)\n", active);
+  _active = active;
+  emit activateChanged(active);
+}
+  
+void CanvasTool::activate()
+{
+  setActive(true);
+}
+
+void CanvasTool::disactivate()
+{
+  setActive(false);
+}
+
+bool CanvasTool::isActive()
+{
+  return _active;
+}
diff --git a/src/canvastool.h b/src/canvastool.h
new file mode 100644
index 0000000..56cfa84
--- /dev/null
+++ b/src/canvastool.h
@@ -0,0 +1,62 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            canvastool.h
+ *
+ *  Thu Jul 28 20:12:25 CEST 2011
+ *  Copyright 2011 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of DrumGizmo.
+ *
+ *  DrumGizmo is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  DrumGizmo is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with DrumGizmo; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#ifndef __DRUMGIZMO_CANVASTOOL_H__
+#define __DRUMGIZMO_CANVASTOOL_H__
+
+#include <QMouseEvent>
+#include <QResizeEvent>
+#include <QPaintEvent>
+#include <QKeyEvent>
+#include <QPainter>
+#include <QString>
+
+class CanvasTool : public QObject {
+Q_OBJECT
+public:
+  virtual QString name() = 0;
+  virtual bool mouseMoveEvent(QMouseEvent *event);
+  virtual bool mousePressEvent(QMouseEvent *event);
+  virtual bool mouseReleaseEvent(QMouseEvent *event);
+  virtual void resizeEvent(QResizeEvent *event);
+  virtual void paintEvent(QPaintEvent *event, QPainter &painter);
+  virtual void keyReleaseEvent(QKeyEvent *event);
+
+  bool isActive();
+
+signals:
+  void activateChanged(bool activestate);
+
+public slots:
+  void setActive(bool active);  
+  void activate();
+  void disactivate();
+
+private:
+  bool _active;
+};
+
+#endif/*__DRUMGIZMO_CANVASTOOL_H__*/
diff --git a/src/canvastoollisten.cc b/src/canvastoollisten.cc
new file mode 100644
index 0000000..847c32d
--- /dev/null
+++ b/src/canvastoollisten.cc
@@ -0,0 +1,81 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            canvastoollisten.cc
+ *
+ *  Fri Jul 29 16:57:48 CEST 2011
+ *  Copyright 2011 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of DrumGizmo.
+ *
+ *  DrumGizmo is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  DrumGizmo is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with DrumGizmo; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#include "canvastoollisten.h"
+
+#include <QApplication>
+
+CanvasToolListen::CanvasToolListen(Canvas *c, Player &p)
+  : player(p)
+{
+  lastpos = pos = 0;
+  canvas = c ;
+}
+
+bool CanvasToolListen::mousePressEvent(QMouseEvent *event)
+{
+  if(!isActive()) return false;
+  player.setPosition(canvas->unmapX(event->x()));
+  canvas->update();
+  connect(&player, SIGNAL(positionUpdate(size_t)), this, SLOT(update(size_t)));
+  return true;
+}
+
+bool CanvasToolListen::mouseReleaseEvent(QMouseEvent *event)
+{
+  if(!isActive()) return false;
+  player.stop();
+  disconnect(&player, SIGNAL(positionUpdate(size_t)),
+             this, SLOT(update(size_t)));
+  lastpos = 0;
+  canvas->update();
+  return true;
+}
+
+void CanvasToolListen::paintEvent(QPaintEvent *event, QPainter &painter)
+{
+  if(!isActive()) return;
+
+  if(player.pos < player.end) {
+    painter.setPen(QColor(0, 127, 127));
+    painter.drawLine(canvas->mapX(pos),
+                     event->rect().y(),
+                     canvas->mapX(pos),
+                     event->rect().y() + event->rect().height());
+   }
+}
+
+void CanvasToolListen::update(size_t pos)
+{
+  this->pos = pos;
+  size_t last = canvas->mapX(lastpos);
+  size_t x = canvas->mapX(player.pos);
+  QRect r(last, 0,
+          x - last + 2, canvas->height());
+  
+  canvas->update(r);
+  lastpos = pos;
+}
diff --git a/src/canvastoollisten.h b/src/canvastoollisten.h
new file mode 100644
index 0000000..bfb2d41
--- /dev/null
+++ b/src/canvastoollisten.h
@@ -0,0 +1,61 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            canvastoollisten.h
+ *
+ *  Fri Jul 29 16:57:48 CEST 2011
+ *  Copyright 2011 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of DrumGizmo.
+ *
+ *  DrumGizmo is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  DrumGizmo is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with DrumGizmo; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#ifndef __DRUMGIZMO_CANVASTOOLLISTEN_H__
+#define __DRUMGIZMO_CANVASTOOLLISTEN_H__
+
+#include "canvastool.h"
+
+//#include <QTimer>
+
+#include "canvas.h"
+#include "player.h"
+
+class CanvasToolListen : public CanvasTool {
+Q_OBJECT
+public:
+  CanvasToolListen(Canvas *canvas, Player &player);
+
+  QString name() { return "Listen"; }
+  bool mousePressEvent(QMouseEvent *event);
+  bool mouseReleaseEvent(QMouseEvent *event);
+  void paintEvent(QPaintEvent *event, QPainter &painter);
+
+  void playRange(unsigned int from, unsigned int to);
+  
+public slots:
+  void update(size_t position);
+
+private:
+  Canvas *canvas;
+
+  Player &player;
+
+  size_t lastpos;
+  size_t pos;
+};
+
+#endif/*__DRUMGIZMO_CANVASTOOLLISTEN_H__*/
diff --git a/src/canvastoolselections.cc b/src/canvastoolselections.cc
new file mode 100644
index 0000000..ad5e193
--- /dev/null
+++ b/src/canvastoolselections.cc
@@ -0,0 +1,319 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            canvastoolselections.cc
+ *
+ *  Thu Jul 28 20:16:59 CEST 2011
+ *  Copyright 2011 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of DrumGizmo.
+ *
+ *  DrumGizmo is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  DrumGizmo is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with DrumGizmo; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#include "canvastoolselections.h"
+
+#include <math.h>
+#include <stdio.h>
+
+#define mapX(x) canvas->mapX(x)
+#define mapY(x) canvas->mapY(x)
+#define unmapX(x) canvas->unmapX(x)
+#define unmapY(x) canvas->unmapY(x)
+
+CanvasToolSelections::CanvasToolSelections(Canvas *c, Selections &s,
+                                           Selections &p)
+  : selections(s), selections_preview(p)
+{
+  threshold = 0.5; // Default from CanvasToolThreshold
+  hold = 100;
+
+  canvas = c;
+
+  selection_is_moving_left = false;
+  selection_is_moving_right = false;
+
+  colSelBg = QColor(255, 0, 0, 60);
+  colSel = QColor(255, 0, 0, 160);
+  colActiveSelBg = QColor(255, 255, 0, 60);
+  colActiveSel = QColor(255, 255, 0, 160);
+  colPreviewSelBg = QColor(0, 0, 255, 60);
+  colPreviewSel = QColor(0, 0, 255, 160);
+}
+
+bool CanvasToolSelections::mouseMoveEvent(QMouseEvent *event)
+{
+  sel_id_t active_selection = selections.active();
+  Selection act_sel = selections.get(active_selection);
+
+  if(selection_is_moving_left) {
+    float val = unmapX(event->x());
+    if(val > act_sel.to) val = act_sel.to - 1;
+    act_sel.from = val;
+    selections.update(active_selection, act_sel);
+    canvas->update();
+    return true;
+  }
+
+  if(selection_is_moving_right) {
+    float val = unmapX(event->x());
+    if(val < act_sel.from) val = act_sel.from + 1;
+    act_sel.to = val;
+    selections.update(active_selection, act_sel);
+    canvas->update();
+    return true;
+  }
+
+  if(event->button() != Qt::LeftButton) {
+    // Check if a selection is being dragged.
+    QVector<sel_id_t> ids = selections.ids();
+    QVector<sel_id_t>::iterator i = ids.begin();
+    while(i != ids.end()) {
+      Selection sel = selections.get(*i);
+      if(abs(event->x() - mapX(sel.from)) < 2
+        || abs(event->x() - mapX(sel.to)) < 2) {
+        canvas->setCursor(Qt::SplitHCursor);
+        return true;
+      }
+      i++;
+    }
+  }
+
+  return false;
+}
+
+bool CanvasToolSelections::mousePressEvent(QMouseEvent *event)
+{
+  if(event->button() == Qt::LeftButton) {
+    // Check if a selection is being dragged.
+    QVector<sel_id_t> ids = selections.ids();
+    QVector<sel_id_t>::iterator i = ids.begin();
+    while(i != ids.end()) {
+      Selection sel = selections.get(*i);
+      if(abs(event->x() - mapX(sel.from)) < 2) {
+        selections.setActive(*i);
+        selection_is_moving_left = true;
+        return true;
+      }
+
+      if(abs(event->x() - mapX(sel.to)) < 2) {
+        selections.setActive(*i);
+        selection_is_moving_right = true;
+        return true;
+      }
+
+      i++;
+    }
+
+    // Check if a selection is being selected.
+    i = ids.begin();
+    while(i != ids.end()) {
+      Selection sel = selections.get(*i);
+      if(event->x() > mapX(sel.from) &&
+         event->x() < mapX(sel.to)) {
+        selections.setActive(*i);
+        canvas->update();
+        return true;
+      }
+
+      i++;
+    }
+
+    // Make new selection
+    int from = unmapX(event->x());
+    Selection new_selection(from, from);
+    sel_id_t id = selections.add(new_selection);
+    selections.setActive(id);
+    selection_is_moving_right = true;
+    canvas->update();
+    return true;
+  }
+
+  return false;
+}
+
+bool CanvasToolSelections::mouseReleaseEvent(QMouseEvent *event)
+{
+  if(event->button() == Qt::LeftButton) {
+    if(selection_is_moving_left || selection_is_moving_right) {
+      selection_is_moving_left = false;
+      selection_is_moving_right = false;
+      canvas->setCursor(Qt::ArrowCursor);
+      canvas->update();
+      return true;
+    }
+  }
+
+  return false;
+}
+
+void CanvasToolSelections::paintEvent(QPaintEvent *event, QPainter &painter)
+{
+  int pos = unmapX(event->rect().x());
+  int width = unmapX(event->rect().width());
+
+  {
+    QVector<sel_id_t> ids = selections.ids();
+    QVector<sel_id_t>::iterator i = ids.begin();
+    while(i != ids.end()) {
+      Selection sel = selections.get(*i);
+      int from = sel.from;
+      int to = sel.to;
+      int fadein = sel.fadein;
+      int fadeout = sel.fadeout;
+      if(from > pos + width || to + width < pos) { i++; continue; }
+      if(selections.active() == *i) {
+        painter.setBrush(colActiveSelBg);
+        painter.setPen(colActiveSel);
+      } else {
+        painter.setBrush(colSelBg);
+        painter.setPen(colSel);
+      }
+      painter.drawRect(mapX(from), mapY(-1.0),
+                       mapX(to) - mapX(from), mapY(1.0) - mapY(-1.0));
+      painter.drawLine(mapX(from), mapY(0.0), mapX(from + fadein), mapY(-1.0));
+      painter.drawLine(mapX(from), mapY(0.0), mapX(from + fadein), mapY(1.0));
+      painter.drawLine(mapX(to - fadeout), mapY(-1.0), mapX(to), mapY(0.0));
+      painter.drawLine(mapX(to - fadeout), mapY(1.0), mapX(to), mapY(0.0));
+      i++;
+    }
+  }
+
+  if(show_preview) {
+    QVector<sel_id_t> ids = selections_preview.ids();
+    QVector<sel_id_t>::iterator i = ids.begin();
+    while(i != ids.end()) {
+      Selection sel = selections_preview.get(*i);
+      int from = sel.from;
+      int to = sel.to;
+      int fadein = sel.fadein;
+      int fadeout = sel.fadeout;
+      if(from > pos + width || to + width < pos) { i++; continue; }
+      painter.setBrush(colPreviewSelBg);
+      painter.setPen(colPreviewSel);
+      
+      painter.drawRect(mapX(from), mapY(-1.0),
+                       mapX(to) - mapX(from), mapY(1.0) - mapY(-1.0));
+      painter.drawLine(mapX(from), mapY(0.0), mapX(from + fadein), mapY(-1.0));
+      painter.drawLine(mapX(from), mapY(0.0), mapX(from + fadein), mapY(1.0));
+      painter.drawLine(mapX(to - fadeout), mapY(-1.0), mapX(to), mapY(0.0));
+      painter.drawLine(mapX(to - fadeout), mapY(1.0), mapX(to), mapY(0.0));
+      i++;
+    }
+  }
+}
+
+void CanvasToolSelections::keyReleaseEvent(QKeyEvent *event)
+{
+  if(selections.active() != SEL_NONE && event->key() == Qt::Key_Delete) {
+    selections.remove(selections.active());
+    canvas->update();
+  }
+}
+
+void CanvasToolSelections::thresholdChanged(double t)
+{
+  threshold = t;
+}
+
+void CanvasToolSelections::holdChanged(int h)
+{
+  hold = h;
+}
+
+void CanvasToolSelections::noiseFloorChanged(int t)
+{
+  double div = 666.0 / 0.00003;
+  noise_floor = (double)t/div;
+}
+
+void CanvasToolSelections::fadeoutChanged(int t)
+{
+  fadeout = (double)t/1000.0;
+}
+
+void CanvasToolSelections::autoCreateSelections()
+{
+  doAutoCreateSelections(false);
+}
+
+void CanvasToolSelections::autoCreateSelectionsPreview()
+{
+  doAutoCreateSelections(true);
+}
+
+void CanvasToolSelections::doAutoCreateSelections(bool preview)
+{
+  float *data = canvas->data;
+  size_t size = canvas->size;
+
+  if(preview) selections_preview.clear();
+
+  for(size_t i = 0; i < size; i++) {
+    if(fabs(data[i]) > fabs(threshold)) {
+      int from = i;
+
+      if(data[from] > 0.0) {
+        while(data[from] > data[from-1] // Falling
+              && data[from-1] > 0.0 // Not crossing zero
+              ) {
+          from--;
+        }
+      } else if(data[from] < 0.0) {
+        while(data[from] < data[from-1] // Rising
+              && data[from-1] < 0.0 // Not crossing zero
+              ) {
+          from--;
+        }
+      }
+
+      int to = i;
+      float runavg = fabs(data[from]);
+      while((runavg > noise_floor ||
+             to < from + hold) &&
+            to < (int)size) {
+        double p = 0.9;
+        runavg = runavg * p + fabs(data[to]) * (1 - p);
+        to++;
+      }
+
+      Selection s(from, to, 2, ((to - from) / 3) * fadeout);
+      if(preview) {
+        selections_preview.add(s);
+      } else {
+        selections.add(s);
+      }
+
+      i = to+1;
+    }
+  }
+  canvas->update();
+}
+
+void CanvasToolSelections::clearSelections()
+{
+  selections.clear();
+  selection_is_moving_left = false;
+  selection_is_moving_right = false;
+  canvas->setCursor(Qt::ArrowCursor);
+  canvas->update();
+}
+
+void CanvasToolSelections::setShowPreview(bool s)
+{
+  show_preview = s;
+  canvas->update();
+}
diff --git a/src/canvastoolselections.h b/src/canvastoolselections.h
new file mode 100644
index 0000000..0557520
--- /dev/null
+++ b/src/canvastoolselections.h
@@ -0,0 +1,93 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            canvastoolselections.h
+ *
+ *  Thu Jul 28 20:16:59 CEST 2011
+ *  Copyright 2011 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of DrumGizmo.
+ *
+ *  DrumGizmo is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  DrumGizmo is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with DrumGizmo; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#ifndef __DRUMGIZMO_CANVASTOOLSELECTIONS_H__
+#define __DRUMGIZMO_CANVASTOOLSELECTIONS_H__
+
+#include "canvastool.h"
+
+#include <QColor>
+
+#include "canvas.h"
+
+#include "selection.h"
+
+class CanvasToolSelections : public CanvasTool {
+Q_OBJECT
+public:
+  CanvasToolSelections(Canvas *canvas, Selections &selections,
+                       Selections &selections_preview);
+
+  QString name() { return "Selections"; }
+  bool mouseMoveEvent(QMouseEvent *event);
+  bool mousePressEvent(QMouseEvent *event);
+  bool mouseReleaseEvent(QMouseEvent *event);
+  void paintEvent(QPaintEvent *event, QPainter &painter);
+  void keyReleaseEvent(QKeyEvent *event);
+
+  //Selections selections();
+
+signals:
+  //void selectionsChanged(Selections selections);
+  //void activeSelectionChanged(sel_id_t id);
+
+public slots:
+  void autoCreateSelections();
+  void autoCreateSelectionsPreview();
+  void clearSelections();
+  void thresholdChanged(double threshold);
+  void noiseFloorChanged(int t);
+  void holdChanged(int h);
+  void fadeoutChanged(int f);
+  void setShowPreview(bool show_preview);
+
+private:
+  void doAutoCreateSelections(bool preview);
+
+  bool selection_is_moving_left;
+  bool selection_is_moving_right;
+
+  Canvas *canvas;
+
+  double threshold;
+  double noise_floor;
+  double fadeout;  
+  int hold;
+
+  QColor colSelBg;
+  QColor colSel;
+  QColor colActiveSelBg;
+  QColor colActiveSel;
+  QColor colPreviewSelBg;
+  QColor colPreviewSel;
+
+  Selections &selections;
+  Selections &selections_preview;
+
+  bool show_preview;
+};
+
+#endif/*__DRUMGIZMO_CANVASTOOLSELECTIONS_H__*/
diff --git a/src/canvastoolthreshold.cc b/src/canvastoolthreshold.cc
new file mode 100644
index 0000000..a321ff2
--- /dev/null
+++ b/src/canvastoolthreshold.cc
@@ -0,0 +1,120 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            canvastoolthreshold.cc
+ *
+ *  Fri Jul 29 16:27:00 CEST 2011
+ *  Copyright 2011 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of DrumGizmo.
+ *
+ *  DrumGizmo is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  DrumGizmo is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with DrumGizmo; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#include "canvastoolthreshold.h"
+
+#include <math.h>
+
+#define mapX(x) canvas->mapX(x)
+#define mapY(x) canvas->mapY(x)
+#define unmapX(x) canvas->unmapX(x)
+#define unmapY(x) canvas->unmapY(x)
+
+CanvasToolThreshold::CanvasToolThreshold(Canvas *c)
+{
+  canvas = c;
+  threshold = 0.5;
+  threshold_is_moving = false;
+
+  colThreshold = QColor(255, 127, 127);
+  colThresholdMoving = QColor(180, 0, 0);
+}
+
+bool CanvasToolThreshold::mouseMoveEvent(QMouseEvent *event)
+{
+  if(!isActive()) return false;
+
+  if(event->button() != Qt::LeftButton) {
+    if(abs(event->y() - mapY(threshold)) < 2 ||
+       abs(event->y() - mapY(-threshold)) < 2 ) {
+      canvas->setCursor(Qt::SplitVCursor);
+      return true;
+    }
+  }
+
+  if(threshold_is_moving) {
+    float val = unmapY(event->y());
+    if(fabs(val) > 1.0) val = 1.0;
+    threshold = fabs(val);
+    canvas->update();
+
+    emit thresholdChanging(threshold);
+
+    return true;
+  }
+
+  return false;
+}
+
+bool CanvasToolThreshold::mousePressEvent(QMouseEvent *event)
+{
+  if(!isActive()) return false;
+
+  if(event->button() == Qt::LeftButton) {
+
+    // Check if threshold is being dragged.
+    if(abs(event->y() - mapY(threshold)) < 2 ||
+       abs(event->y() - mapY(-threshold)) < 2 ) {
+      threshold_is_moving = true;
+      canvas->update();
+      return true;
+    }
+  }
+
+  return false;
+}
+
+bool CanvasToolThreshold::mouseReleaseEvent(QMouseEvent *event)
+{
+  if(!isActive()) return false;
+
+  if(event->button() == Qt::LeftButton) {
+    if(threshold_is_moving) {
+      threshold_is_moving = false;
+      canvas->setCursor(Qt::ArrowCursor);
+      canvas->update();
+
+      emit thresholdChanged(threshold);
+
+      return true;
+    }
+  }
+
+  return false;
+}
+
+void CanvasToolThreshold::paintEvent(QPaintEvent *event, QPainter &painter)
+{
+  if(!isActive()) return;
+
+  if(threshold_is_moving) painter.setPen(colThresholdMoving);
+  else painter.setPen(colThreshold);
+  painter.drawLine(event->rect().x(), mapY(threshold),
+                   event->rect().x() + event->rect().width(), mapY(threshold));
+  painter.drawLine(event->rect().x(), mapY(-threshold),
+                   event->rect().x() + event->rect().width(), mapY(-threshold));
+}
+
diff --git a/src/canvastoolthreshold.h b/src/canvastoolthreshold.h
new file mode 100644
index 0000000..907e312
--- /dev/null
+++ b/src/canvastoolthreshold.h
@@ -0,0 +1,61 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            canvastoolthreshold.h
+ *
+ *  Fri Jul 29 16:27:00 CEST 2011
+ *  Copyright 2011 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of DrumGizmo.
+ *
+ *  DrumGizmo is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  DrumGizmo is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with DrumGizmo; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#ifndef __DRUMGIZMO_CANVASTOOLTHRESHOLD_H__
+#define __DRUMGIZMO_CANVASTOOLTHRESHOLD_H__
+
+#include "canvastool.h"
+
+#include <QColor>
+
+#include "canvas.h"
+
+class CanvasToolThreshold : public CanvasTool {
+Q_OBJECT
+public:
+  CanvasToolThreshold(Canvas *canvas);
+
+  QString name() { return "Threshold"; }
+  bool mouseMoveEvent(QMouseEvent *event);
+  bool mousePressEvent(QMouseEvent *event);
+  bool mouseReleaseEvent(QMouseEvent *event);
+  void paintEvent(QPaintEvent *event, QPainter &painter);
+
+signals:
+  void thresholdChanged(double threshold);
+  void thresholdChanging(double threshold);
+
+private:
+  float threshold;
+  bool threshold_is_moving;
+
+  Canvas *canvas;
+
+  QColor colThreshold;
+  QColor colThresholdMoving;
+};
+
+#endif/*__DRUMGIZMO_CANVASTOOLTHRESHOLD_H__*/
diff --git a/src/canvaswidget.cc b/src/canvaswidget.cc
new file mode 100644
index 0000000..35b3684
--- /dev/null
+++ b/src/canvaswidget.cc
@@ -0,0 +1,93 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            canvaswidget.cc
+ *
+ *  Fri Aug  1 19:31:32 CEST 2014
+ *  Copyright 2014 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of DrumGizmo.
+ *
+ *  DrumGizmo is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  DrumGizmo is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with DrumGizmo; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#include "canvaswidget.h"
+
+#include <QGridLayout>
+
+#define MAXVAL 10000000L
+#define SINGLESTEP MAXVAL/100000
+#define PAGESTEP MAXVAL/10000
+
+CanvasWidget::CanvasWidget(QWidget *parent)
+{
+  QGridLayout *g = new QGridLayout(this);
+
+  canvas = new Canvas(this);
+  g->addWidget(canvas, 0, 0);
+
+  yoffset = new QScrollBar(Qt::Vertical);
+  yoffset->setRange(0, MAXVAL);
+  yoffset->setPageStep(PAGESTEP);
+  yoffset->setSingleStep(SINGLESTEP);
+  connect(yoffset, SIGNAL(valueChanged(int)), this, SLOT(setYOffset(int)));
+  g->addWidget(yoffset, 0, 1);
+
+  yscale = new ZoomSlider(Qt::Vertical);
+  yscale->setRange(0.9, 30);
+  yscale->setTickWidth(0.1);
+  connect(yscale, SIGNAL(valueChanged(float)), this, SLOT(setYScale(float)));
+  g->addWidget(yscale, 0, 2);
+
+  xoffset = new QScrollBar(Qt::Horizontal);
+  xoffset->setRange(0, MAXVAL);
+  xoffset->setPageStep(PAGESTEP);
+  xoffset->setSingleStep(SINGLESTEP);
+  connect(xoffset, SIGNAL(valueChanged(int)), this, SLOT(setXOffset(int)));
+  g->addWidget(xoffset, 1, 0);
+
+  xscale = new ZoomSlider(Qt::Horizontal);
+  xscale->setRange(1, 0.0001);
+  xscale->setTickWidth(0.0001);
+  connect(xscale, SIGNAL(valueChanged(float)), this, SLOT(setXScale(float)));
+  g->addWidget(xscale, 2, 0);
+
+  setLayout(g);
+}
+
+void CanvasWidget::setXScale(float val)
+{
+  canvas->setXScale(val);
+}
+
+void CanvasWidget::setYScale(float val)
+{
+  canvas->setYScale(val);
+}
+
+void CanvasWidget::setXOffset(int of)
+{
+  // range 0.0 - 1.0
+  float val = (float)of/(float)MAXVAL;
+  canvas->setXOffset(val);
+}
+
+void CanvasWidget::setYOffset(int of)
+{
+  // range 0.0 - 1.0
+  float val = (float)(of * -1 + MAXVAL)/(float)MAXVAL;
+  canvas->setYOffset(val);
+}
diff --git a/src/canvaswidget.h b/src/canvaswidget.h
new file mode 100644
index 0000000..1ae73da
--- /dev/null
+++ b/src/canvaswidget.h
@@ -0,0 +1,57 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            canvaswidget.h
+ *
+ *  Fri Aug  1 19:31:31 CEST 2014
+ *  Copyright 2014 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of DrumGizmo.
+ *
+ *  DrumGizmo is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  DrumGizmo is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with DrumGizmo; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#ifndef __DRUMGIZMO_CANVASWIDGET_H__
+#define __DRUMGIZMO_CANVASWIDGET_H__
+
+#include <QWidget>
+
+#include <QScrollBar>
+
+#include "canvas.h"
+#include "zoomslider.h"
+
+class CanvasWidget : public QWidget {
+Q_OBJECT
+public:
+  CanvasWidget(QWidget *parent);
+  
+  Canvas *canvas;
+
+  QScrollBar *yoffset;
+  ZoomSlider *yscale;
+  ZoomSlider *xscale;
+  QScrollBar *xoffset;
+
+public slots:
+  void setXScale(float);
+  void setYScale(float);
+  void setXOffset(int);
+  void setYOffset(int);
+
+};
+
+#endif/*__DRUMGIZMO_CANVASWIDGET_H__*/
diff --git a/src/dgedit.cc b/src/dgedit.cc
new file mode 100644
index 0000000..0417876
--- /dev/null
+++ b/src/dgedit.cc
@@ -0,0 +1,39 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            editor.cc
+ *
+ *  Tue Nov 10 08:37:43 CET 2009
+ *  Copyright 2009 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of DrumGizmo.
+ *
+ *  DrumGizmo is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  DrumGizmo is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with DrumGizmo; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#include <QApplication>
+
+#include "mainwindow.h"
+
+int main(int argc, char *argv[])
+{
+  QApplication app(argc, argv);
+
+  MainWindow wnd;
+  wnd.show();
+
+  return app.exec();
+}
diff --git a/src/dgedit.qrc b/src/dgedit.qrc
new file mode 100644
index 0000000..d71c0a0
--- /dev/null
+++ b/src/dgedit.qrc
@@ -0,0 +1,7 @@
+<!DOCTYPE RCC>
+<RCC version="1.0">
+<qresource>
+    <file>icons/master.png</file>
+    <file>icons/file.png</file>
+</qresource>
+</RCC>
diff --git a/src/filelist.cc b/src/filelist.cc
new file mode 100644
index 0000000..c4e5c4b
--- /dev/null
+++ b/src/filelist.cc
@@ -0,0 +1,186 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            filelist.cc
+ *
+ *  Mon Nov 30 15:35:52 CET 2009
+ *  Copyright 2009 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of DrumGizmo.
+ *
+ *  DrumGizmo is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  DrumGizmo is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with DrumGizmo; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#include "filelist.h"
+
+#include <QFileDialog>
+#include <QFileInfo>
+#include <QMenu>
+
+#include "itemeditor.h"
+
+FileList::FileList()
+{
+  setContextMenuPolicy(Qt::CustomContextMenu);
+
+  connect(this, SIGNAL(customContextMenuRequested(const QPoint &)),
+          this, SLOT(popupMenu(const QPoint &)));
+
+  connect(this, SIGNAL(itemDoubleClicked(QListWidgetItem *)),
+          this, SLOT(selectionChanged(QListWidgetItem *)));
+
+  createMenus();
+}
+
+void FileList::addFiles()
+{
+  QStringList files = QFileDialog::getOpenFileNames(this, tr("Open file"),
+                                                    path, tr("Audio Files (*.wav)"));
+  QStringList::Iterator i = files.begin();
+  while(i != files.end()) {
+    QString file = *i;
+    QFileInfo fi(file);
+    QString name = fi.baseName();
+    path = fi.absolutePath();
+
+    QListWidgetItem *item = new QListWidgetItem();
+    setItemFile(item, file);
+    setItemName(item, name);
+    setItemMaster(item, false);
+    addItem(item);
+    
+    emit fileAdded(file, name);
+
+    i++;
+  }
+}
+
+void FileList::setMasterFile(QListWidgetItem *i)
+{
+  QString filename = itemFile(i);
+
+  for(int idx = 0; idx < count(); idx++) {
+    setItemMaster(item(idx), false);
+  }
+
+  setItemMaster(i, true);
+  emit masterFileChanged(filename);
+}
+
+void FileList::selectionChanged(QListWidgetItem *i)
+{
+  setMasterFile(i);
+}
+
+
+void FileList::createMenus()
+{
+  menu = new QMenu();
+
+  setMasterAction = new QAction("Set as Master (dbl-click)", this);
+  connect(setMasterAction, SIGNAL(triggered()), this, SLOT(setMaster()));
+
+  editAction = new QAction("Edit name", this);
+  connect(editAction, SIGNAL(triggered()), this, SLOT(editName()));
+
+  removeAction = new QAction("Remove", this);
+  connect(removeAction, SIGNAL(triggered()), this, SLOT(removeFile()));
+
+  removeAllAction = new QAction("Remove all", this);
+  connect(removeAllAction, SIGNAL(triggered()), this, SLOT(removeAllFiles()));
+
+  menu->addAction(setMasterAction);
+  menu->addAction(editAction);
+  menu->addAction(removeAction);
+  menu->addSeparator();
+  menu->addAction(removeAllAction);
+
+}
+
+void FileList::popupMenu(const QPoint & pos)
+{
+  activeItem = itemAt(pos);
+  if(!activeItem) return;
+  menu->popup(mapToGlobal(pos));
+}
+
+void FileList::setMaster()
+{
+  setMasterFile(activeItem);
+}
+
+void FileList::removeFile()
+{
+  QString file = itemFile(activeItem);
+  QString name = itemName(activeItem);
+
+  printf("Removing: %s\n", file.toStdString().c_str());
+  delete activeItem;//takeItem(row(activeItem));
+  activeItem = NULL;
+  setCurrentRow(-1);
+
+  emit fileRemoved(file, name);
+}
+
+void FileList::removeAllFiles()
+{
+  activeItem = NULL;
+
+  clear();
+
+  emit allFilesRemoved();
+}
+
+void FileList::editName()
+{
+  ItemEditor *e = new ItemEditor(activeItem, itemName(activeItem));
+  connect(e, SIGNAL(updateItem(QListWidgetItem *, QString)),
+          this, SLOT(setItemName(QListWidgetItem *, QString)));
+}
+
+
+// Item utility functions.
+QString FileList::itemFile(QListWidgetItem *i)
+{
+  return i->data(Qt::ToolTipRole).toString();
+}
+
+void FileList::setItemFile(QListWidgetItem *i, QString file)
+{
+  i->setData(Qt::ToolTipRole, file);
+  i->setData(Qt::DisplayRole, itemName(i) + "\t" + file);
+}
+
+QString FileList::itemName(QListWidgetItem *i)
+{
+  return i->data(Qt::UserRole).toString();
+}
+
+void FileList::setItemName(QListWidgetItem *i, QString name)
+{
+  QString oldname = itemName(i);
+
+  i->setData(Qt::UserRole, name);
+  i->setData(Qt::DisplayRole, name + "\t" + itemFile(i));
+
+  if(oldname != "" && oldname != name) emit nameChanged(itemFile(i), name);
+}
+
+void FileList::setItemMaster(QListWidgetItem *i, bool master)
+{
+  if(master) i->setIcon(QPixmap(":icons/master.png"));
+  else i->setIcon(QPixmap(":icons/file.png"));
+}
diff --git a/src/filelist.h b/src/filelist.h
new file mode 100644
index 0000000..2ca277c
--- /dev/null
+++ b/src/filelist.h
@@ -0,0 +1,78 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            filelist.h
+ *
+ *  Mon Nov 30 15:35:52 CET 2009
+ *  Copyright 2009 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of DrumGizmo.
+ *
+ *  DrumGizmo is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  DrumGizmo is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with DrumGizmo; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#ifndef __DRUMGIZMO_FILELIST_H__
+#define __DRUMGIZMO_FILELIST_H__
+
+#include <QListWidget>
+#include <QListWidgetItem>
+#include <QAction>
+#include <QMenu>
+
+class FileList : public QListWidget {
+Q_OBJECT
+public:
+  FileList();
+
+  QString path;
+signals:
+  void masterFileChanged(QString filename);
+  void fileAdded(QString file, QString name);
+  void fileRemoved(QString file, QString name);
+  void allFilesRemoved();
+  void nameChanged(QString file, QString name);
+
+public slots:
+  void addFiles();
+  void popupMenu(const QPoint &pos);
+
+private slots:
+  void selectionChanged(QListWidgetItem *item);
+  void setMaster();
+  void removeFile();
+  void removeAllFiles();
+  void editName();
+  void setItemName(QListWidgetItem *i, QString name);
+
+private:
+  QString itemFile(QListWidgetItem *i);
+  QString itemName(QListWidgetItem *i);
+  void setItemFile(QListWidgetItem *i, QString file);
+  void setItemMaster(QListWidgetItem *i, bool master);
+
+  void setMasterFile(QListWidgetItem *i);
+  void createMenus();
+
+  QMenu *menu;
+  QAction *setMasterAction;
+  QAction *editAction;
+  QAction *removeAction;
+  QAction *removeAllAction;
+
+  QListWidgetItem *activeItem;
+};
+
+#endif/*__DRUMGIZMO_FILELIST_H__*/
diff --git a/src/itemeditor.cc b/src/itemeditor.cc
new file mode 100644
index 0000000..1925048
--- /dev/null
+++ b/src/itemeditor.cc
@@ -0,0 +1,40 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            itemeditor.cc
+ *
+ *  Tue Dec  1 11:01:40 CET 2009
+ *  Copyright 2009 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of DrumGizmo.
+ *
+ *  DrumGizmo is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  DrumGizmo is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with DrumGizmo; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#include "itemeditor.h"
+
+ItemEditor::ItemEditor(QListWidgetItem *i, QString v)
+{
+  this->i = i;
+  setText(v);
+  show();
+}
+
+void ItemEditor::focusOutEvent(QFocusEvent *)
+{
+  emit updateItem(i, text());
+  close();
+}
diff --git a/src/itemeditor.h b/src/itemeditor.h
new file mode 100644
index 0000000..b6b9e33
--- /dev/null
+++ b/src/itemeditor.h
@@ -0,0 +1,49 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            itemeditor.h
+ *
+ *  Tue Dec  1 11:01:40 CET 2009
+ *  Copyright 2009 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of DrumGizmo.
+ *
+ *  DrumGizmo is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  DrumGizmo is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with DrumGizmo; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#ifndef __DRUMGIZMO_ITEMEDITOR_H__
+#define __DRUMGIZMO_ITEMEDITOR_H__
+
+#include <QLineEdit>
+#include <QString>
+#include <QListWidgetItem>
+
+class ItemEditor : public QLineEdit {
+Q_OBJECT
+public:
+  ItemEditor(QListWidgetItem *i, QString v);
+
+protected:
+  void focusOutEvent(QFocusEvent *);
+
+signals:
+  void updateItem(QListWidgetItem *i, QString v);
+
+private:
+  QListWidgetItem *i;
+};
+
+#endif/*__DRUMGIZMO_ITEMEDITOR_H__*/
diff --git a/src/mainwindow.cc b/src/mainwindow.cc
new file mode 100644
index 0000000..05562b6
--- /dev/null
+++ b/src/mainwindow.cc
@@ -0,0 +1,555 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            mainwindow.cc
+ *
+ *  Tue Nov 10 10:21:04 CET 2009
+ *  Copyright 2009 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of DrumGizmo.
+ *
+ *  DrumGizmo is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  DrumGizmo is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with DrumGizmo; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#include "mainwindow.h"
+
+#include <QHBoxLayout>
+#include <QVBoxLayout>
+
+#include <QPushButton>
+#include <QLabel>
+#include <QStatusBar>
+#include <QApplication>
+#include <QDockWidget>
+#include <QSettings>
+#include <QToolBar>
+#include <QAction>
+#include <QMenuBar>
+#include <QFileDialog>
+#include <QIntValidator>
+#include <QTabWidget>
+#include <QProgressBar>
+#include <QTime>
+#include <QSpinBox>
+
+#include "sleep.h"
+#include "canvastool.h"
+#include "canvastoolthreshold.h"
+#include "volumefader.h"
+#include "selectioneditor.h"
+#include "zoomslider.h"
+
+
+#define MAXVAL 10000000L
+/*
+#define SINGLESTEP MAXVAL/100000
+#define PAGESTEP MAXVAL/10000
+*/
+
+static void addTool(QToolBar *toolbar, Canvas *canvas, CanvasTool *tool)
+{
+  QAction *action = new QAction(tool->name(), toolbar);
+  action->setCheckable(true);
+  toolbar->addAction(action);
+  tool->connect(action, SIGNAL(toggled(bool)), tool, SLOT(setActive(bool)));
+  tool->setActive(false);
+  canvas->tools.push_back(tool);
+}
+
+MainWindow::MainWindow()
+{
+  {
+    int start = 44100 * 60;
+    Selection p(start, start + 44100 * 60, 0, 0); // one minute selection
+    selections_preview.add(p);
+  }
+
+  QWidget *central = new QWidget();
+  QHBoxLayout *lh = new QHBoxLayout();
+  QVBoxLayout *lv = new QVBoxLayout();
+  central->setLayout(lv);
+  setCentralWidget(central);
+
+  extractor = new AudioExtractor(selections, this);
+  //canvas = new Canvas(this);
+  canvaswidget = new CanvasWidget(this);
+
+  QToolBar *toolbar = addToolBar("Tools");
+  listen = new CanvasToolListen(canvaswidget->canvas, player);
+  addTool(toolbar, canvaswidget->canvas, listen);
+  threshold = new CanvasToolThreshold(canvaswidget->canvas);
+  canvaswidget->canvas->tools.push_back(threshold);//addTool(toolbar, canvaswidget->canvas, threshold);
+  tool_selections = new CanvasToolSelections(canvaswidget->canvas, selections,
+                                             selections_preview);
+  connect(threshold, SIGNAL(thresholdChanged(double)),
+          tool_selections, SLOT(thresholdChanged(double)));
+  connect(threshold, SIGNAL(thresholdChanging(double)),
+          tool_selections, SLOT(thresholdChanged(double)));
+  connect(&selections, SIGNAL(activeChanged(sel_id_t)),
+          canvaswidget->canvas, SLOT(update()));
+  connect(&selections, SIGNAL(updated(sel_id_t)),
+          canvaswidget->canvas, SLOT(update()));
+  addTool(toolbar, canvaswidget->canvas, tool_selections);
+
+  QMenu *fileMenu = menuBar()->addMenu("&File");
+  QAction *act_quit = new QAction("&Quit", this);
+  fileMenu->addAction(act_quit);
+  connect(act_quit, SIGNAL(triggered()), this, SLOT(close()));
+
+  //  QWidget *dock = new QWidget();
+  /*
+  yoffset = new QScrollBar(Qt::Vertical);
+  yoffset->setRange(0, MAXVAL);
+  yoffset->setPageStep(PAGESTEP);
+  yoffset->setSingleStep(SINGLESTEP);
+  connect(yoffset, SIGNAL(valueChanged(int)), this, SLOT(setYOffset(int)));
+
+  yscale = new ZoomSlider(Qt::Vertical);
+  yscale->setRange(0.9, 30);
+  yscale->setTickWidth(0.1);
+  connect(yscale, SIGNAL(valueChanged(float)), this, SLOT(setYScale(float)));
+
+  xscale = new ZoomSlider(Qt::Horizontal);
+  xscale->setRange(1, 0.0001);
+  xscale->setTickWidth(0.0001);
+  connect(xscale, SIGNAL(valueChanged(float)), this, SLOT(setXScale(float)));
+
+  xoffset = new QScrollBar(Qt::Horizontal);
+  xoffset->setRange(0, MAXVAL);
+  xoffset->setPageStep(PAGESTEP);
+  xoffset->setSingleStep(SINGLESTEP);
+  connect(xoffset, SIGNAL(valueChanged(int)), this, SLOT(setXOffset(int)));
+  */
+  sorter = new SampleSorter(selections, selections_preview);
+  connect(&selections, SIGNAL(added(sel_id_t)),
+          sorter, SLOT(addSelection(sel_id_t)));
+  connect(&selections_preview, SIGNAL(added(sel_id_t)),
+          sorter, SLOT(addSelectionPreview(sel_id_t)));
+  connect(&selections, SIGNAL(updated(sel_id_t)), sorter, SLOT(relayout()));
+  connect(&selections_preview, SIGNAL(updated(sel_id_t)),
+          sorter, SLOT(relayout()));
+  connect(&selections, SIGNAL(removed(sel_id_t)), sorter, SLOT(relayout()));
+  connect(&selections_preview, SIGNAL(removed(sel_id_t)),
+          sorter, SLOT(relayout()));
+  connect(&selections, SIGNAL(activeChanged(sel_id_t)),
+          sorter, SLOT(relayout()));
+
+  QPushButton *btn_playsamples = new QPushButton("Play samples");
+  connect(btn_playsamples, SIGNAL(clicked()), this, SLOT(playSamples()));
+  
+  sb_playsamples = new QScrollBar(Qt::Horizontal);
+  sb_playsamples->setRange(100, 4000); // ms
+
+
+  lh->addWidget(canvaswidget);
+  //lh->addWidget(yscale);
+  //lh->addWidget(yoffset);
+  lv->addLayout(lh, 100);
+  //lv->addWidget(xscale, 100);
+  //lv->addWidget(xoffset, 100);
+  lv->addWidget(sorter, 15);
+  lv->addWidget(btn_playsamples);
+  lv->addWidget(sb_playsamples);
+
+
+  QDockWidget *dockWidget = new QDockWidget(tr("Dock Widget"), this);
+  dockWidget->setAllowedAreas(Qt::LeftDockWidgetArea | Qt::RightDockWidgetArea);
+
+  dockWidget->setWidget(new QWidget());
+  dockWidget->widget()->setLayout(new QVBoxLayout());
+
+//  dockWidget->widget()->layout()->addWidget(new QLabel("Presets:"));
+//  presets = new QComboBox();
+//  connect(presets, SIGNAL(currentIndexChanged(int)),
+//          this, SLOT(setPreset(int)));
+//  dockWidget->widget()->layout()->addWidget(presets);
+
+  tabs = new QTabWidget(this);
+  tabs->addTab(createFilesTab(), "Files");
+  generateTabId = tabs->addTab(createGenerateTab(), "Generate");
+  tabs->addTab(createEditTab(), "Edit");
+  tabs->addTab(createExportTab(), "Export");
+  connect(tabs, SIGNAL(currentChanged(int)), this, SLOT(tabChanged(int)));
+  tabChanged(tabs->currentIndex());
+
+  dockWidget->widget()->layout()->addWidget(tabs);
+
+  VolumeFader *vol = new VolumeFader();
+  connect(vol, SIGNAL(volumeChangedDb(double)),
+          &player, SLOT(setGainDB(double)));
+  connect(&player, SIGNAL(peakUpdate(double)),
+          vol, SLOT(updatePeakPower(double)));
+//  connect(&player, SIGNAL(peakUpdateDB(double)),
+//          vol, SLOT(updatePeakDb(double)));
+
+  vol->setVolumeDb(0);
+  dockWidget->widget()->layout()->addWidget(vol);
+
+  addDockWidget(Qt::LeftDockWidgetArea, dockWidget);
+
+  canvaswidget->yscale->setValue(0.9);
+  canvaswidget->yoffset->setValue(MAXVAL/2);
+  canvaswidget->xscale->setValue(0);
+  canvaswidget->xoffset->setValue(0);
+  
+  loadSettings();
+
+/*
+  QSettings settings("presets.ini", QSettings::IniFormat);
+  QStringList list = settings.childGroups();
+  for(int i = 0; i != list.size(); i++) {
+    QString presetname = list.at(i);
+    Preset p;
+    settings.beginGroup(presetname);
+    p.prefix = settings.value("prefix", "unknown").toString();
+    p.attacklength = settings.value("attacklength", 0).toInt();
+    p.falloff = settings.value("falloff", 0).toInt();
+    p.fadelength = settings.value("fadelength", 0).toInt();
+    settings.endGroup();
+    QVariant v;
+    v.setValue(p);
+    presets->addItem(presetname, v); 
+  }
+*/
+
+  statusBar()->showMessage("Ready");
+}
+
+MainWindow::~MainWindow()
+{
+}
+
+void MainWindow::tabChanged(int tabid)
+{
+  tool_selections->setShowPreview(tabid == generateTabId);
+  sorter->setShowPreview(tabid == generateTabId);
+  tool_selections->autoCreateSelectionsPreview();
+  threshold->setActive(tabid == generateTabId);
+}
+
+QWidget *MainWindow::createFilesTab()
+{
+  QWidget *w = new QWidget();
+  QVBoxLayout *l = new QVBoxLayout();
+  w->setLayout(l);
+
+  l->addWidget(new QLabel("Files: (double-click to set as master)"));
+  QPushButton *loadbtn = new QPushButton();
+  loadbtn->setText("Add files...");
+  l->addWidget(loadbtn);
+
+  filelist = new FileList();
+  connect(filelist, SIGNAL(masterFileChanged(QString)),
+          this, SLOT(loadFile(QString)));
+  connect(loadbtn, SIGNAL(clicked()), filelist, SLOT(addFiles()));
+  connect(filelist, SIGNAL(fileAdded(QString, QString)),
+          extractor, SLOT(addFile(QString, QString)));
+  connect(filelist, SIGNAL(fileRemoved(QString, QString)),
+          extractor, SLOT(removeFile(QString, QString)));
+  connect(filelist, SIGNAL(nameChanged(QString, QString)),
+          extractor, SLOT(changeName(QString, QString)));
+  l->addWidget(filelist);
+
+  return w;
+}
+
+QWidget *MainWindow::createEditTab()
+{
+  SelectionEditor *se = new SelectionEditor(selections);
+
+  connect(&selections, SIGNAL(added(sel_id_t)), se, SLOT(added(sel_id_t)));
+  connect(&selections, SIGNAL(updated(sel_id_t)), se, SLOT(updated(sel_id_t)));
+  connect(&selections, SIGNAL(removed(sel_id_t)), se, SLOT(removed(sel_id_t)));
+  connect(&selections, SIGNAL(activeChanged(sel_id_t)),
+          se, SLOT(activeChanged(sel_id_t)));
+
+  return se;
+}
+
+QSlider *createAttribute(QWidget *parent, QString name,
+                         int range_from, int range_to)
+{
+  QSlider *slider;
+
+  QGridLayout *l = new QGridLayout();
+  
+  l->addWidget(new QLabel(name), 0, 0, 1, 2);
+
+  QSpinBox *spin = new QSpinBox();
+  spin->setRange(range_from, range_to);
+  l->addWidget(spin, 1, 0, 1, 1);
+
+  slider = new QSlider(Qt::Horizontal);
+  slider->setRange(range_from, range_to);
+  l->addWidget(slider, 1, 1, 1,1);
+
+  QObject::connect(spin, SIGNAL(valueChanged(int)),
+                   slider, SLOT(setValue(int)));
+  QObject::connect(slider, SIGNAL(valueChanged(int)),
+                   spin, SLOT(setValue(int)));
+
+  ((QBoxLayout *)parent->layout())->addLayout(l);
+
+  return slider;
+}
+
+QWidget *MainWindow::createGenerateTab()
+{
+  QWidget *w = new QWidget();
+  QVBoxLayout *l = new QVBoxLayout();
+  w->setLayout(l);
+
+  QHBoxLayout *btns = new QHBoxLayout();
+
+  QPushButton *autosel = new QPushButton();
+  autosel->setText("Generate");
+  connect(autosel, SIGNAL(clicked()),
+          tool_selections, SLOT(clearSelections()));
+  connect(autosel, SIGNAL(clicked()),
+          tool_selections, SLOT(autoCreateSelections()));
+
+  connect(threshold, SIGNAL(thresholdChanged(double)),
+          tool_selections, SLOT(autoCreateSelectionsPreview()));
+  connect(threshold, SIGNAL(thresholdChanging(double)),
+          tool_selections, SLOT(autoCreateSelectionsPreview()));
+
+  QPushButton *clearsel = new QPushButton();
+  clearsel->setText("Clear");
+  connect(clearsel, SIGNAL(clicked()),
+          tool_selections, SLOT(clearSelections()));
+
+  btns->addWidget(autosel);
+  btns->addWidget(clearsel);
+  
+  l->addLayout(btns);
+
+  slider_attacklength = createAttribute(w, "Attack length:", 10, 1000);
+  connect(slider_attacklength, SIGNAL(valueChanged(int)),
+          sorter, SLOT(setAttackLength(int)));
+  connect(slider_attacklength, SIGNAL(valueChanged(int)),
+          tool_selections, SLOT(autoCreateSelectionsPreview()));
+  slider_attacklength->setValue(300);
+
+  slider_hold = createAttribute(w, "Minimum size (samples):", 0, 200000);
+  connect(slider_hold, SIGNAL(valueChanged(int)),
+          tool_selections, SLOT(holdChanged(int)));
+  connect(slider_hold, SIGNAL(valueChanged(int)),
+          tool_selections, SLOT(autoCreateSelectionsPreview()));
+  slider_hold->setValue(100);
+
+  slider_falloff = createAttribute(w, "Falloff:", 10, 5000);
+  connect(slider_falloff, SIGNAL(valueChanged(int)),
+          tool_selections, SLOT(noiseFloorChanged(int)));
+  connect(slider_falloff, SIGNAL(valueChanged(int)),
+          tool_selections, SLOT(autoCreateSelectionsPreview()));
+  slider_falloff->setValue(300);
+
+  slider_fadelength = createAttribute(w, "Fadelength:", 0, 2000);
+  connect(slider_fadelength, SIGNAL(valueChanged(int)),
+          tool_selections, SLOT(fadeoutChanged(int)));
+  connect(slider_fadelength, SIGNAL(valueChanged(int)),
+          tool_selections, SLOT(autoCreateSelectionsPreview()));
+  slider_fadelength->setValue(666);
+
+  l->addStretch();
+
+  return w;
+}
+
+QWidget *MainWindow::createExportTab()
+{
+  QWidget *w = new QWidget();
+  QVBoxLayout *l = new QVBoxLayout();
+  w->setLayout(l);
+
+  l->addWidget(new QLabel("Prefix:"));
+  prefix = new QLineEdit();
+  connect(prefix, SIGNAL(textChanged(const QString &)),
+          extractor, SLOT(setOutputPrefix(const QString &)));
+  l->addWidget(prefix);
+
+  l->addWidget(new QLabel("Export path:"));
+  QHBoxLayout *lo_exportp = new QHBoxLayout();
+  lineed_exportp = new QLineEdit();
+  connect(lineed_exportp, SIGNAL(textChanged(const QString &)),
+          extractor, SLOT(setExportPath(const QString &)));
+  lo_exportp->addWidget(lineed_exportp);
+  QPushButton *btn_browse = new QPushButton("...");
+  connect(btn_browse, SIGNAL(clicked()), this, SLOT(browse()));
+  lo_exportp->addWidget(btn_browse);
+
+  l->addLayout(lo_exportp);
+
+  QPushButton *exportsel = new QPushButton();
+  exportsel->setText("Export");
+  connect(exportsel, SIGNAL(clicked()), this, SLOT(doExport()));
+  l->addWidget(exportsel);
+
+  QProgressBar *bar = new QProgressBar();
+  connect(extractor, SIGNAL(progressUpdate(int)), bar, SLOT(setValue(int)));
+  connect(extractor, SIGNAL(setMaximumProgress(int)),
+          bar, SLOT(setMaximum(int)));
+  l->addWidget(bar);
+
+  l->addStretch();
+
+  return w;
+}
+
+void MainWindow::playSamples()
+{
+  Selections *sels = &selections;
+  if(tabs->currentIndex() == generateTabId) sels = &selections_preview;
+
+  QVector<sel_id_t> ids = sels->ids();
+  for(int v1 = 0; v1 < ids.size(); v1++) {
+    for(int v2 = 0; v2 < ids.size(); v2++) {
+
+      Selection sel1 = sels->get(ids[v1]);
+      Selection sel2 = sels->get(ids[v2]);
+
+      if(sel1.energy < sel2.energy) {
+        sel_id_t vtmp = ids[v1];
+        ids[v1] = ids[v2];
+        ids[v2] = vtmp;
+      }
+    }
+  }
+
+  QVector<sel_id_t>::iterator i = ids.begin();
+  while(i != ids.end()) {
+    Selection sel = sels->get(*i);
+
+    unsigned int length = sb_playsamples->value() * 44100 / 1000;
+
+    unsigned int sample_length = sel.to - sel.from;
+
+    unsigned int to = sel.to;
+
+    if(sample_length > length) to = sel.from + length;
+
+    sels->setActive(*i);
+    
+    connect(&player, SIGNAL(positionUpdate(size_t)),
+            listen, SLOT(update(size_t)));
+
+    player.playSelection(sel, to - sel.from);
+    QTime t;
+    t.start();
+    while(t.elapsed() < sb_playsamples->value()) {
+      qApp->processEvents();
+      q_usleep(25 * 1000);
+    }
+    player.stop();
+
+    disconnect(&player, SIGNAL(positionUpdate(size_t)),
+               listen, SLOT(update(size_t)));
+    i++;
+  }
+}
+
+void MainWindow::closeEvent(QCloseEvent *)
+{
+  saveSettings();
+  QApplication::quit();
+}
+
+void MainWindow::loadSettings()
+{
+  QSettings settings;
+
+  settings.beginGroup("MainWindow");
+  lineed_exportp->setText(settings.value("exportpath", "").toString());
+  resize(settings.value("size", QSize(700, 800)).toSize());
+  move(settings.value("pos", QPoint(0, 0)).toPoint());
+  settings.endGroup();
+}
+
+void MainWindow::saveSettings()
+{
+  QSettings settings;
+
+  settings.beginGroup("MainWindow");
+  settings.setValue("exportpath", lineed_exportp->text());
+  settings.setValue("size", size());
+  settings.setValue("pos", pos());
+  settings.endGroup();
+}
+/*
+void MainWindow::setXScale(float val)
+{
+  canvaswidget->canvas->setXScale(val);
+}
+
+void MainWindow::setYScale(float val)
+{
+  canvaswidget->canvas->setYScale(val);
+}
+
+void MainWindow::setXOffset(int of)
+{
+  // range 0.0 - 1.0
+  float val = (float)of/(float)MAXVAL;
+  canvaswidget->canvas->setXOffset(val);
+}
+
+void MainWindow::setYOffset(int of)
+{
+  // range 0.0 - 1.0
+  float val = (float)(of * -1 + MAXVAL)/(float)MAXVAL;
+  canvaswidget->canvas->setYOffset(val);
+}
+*/
+void MainWindow::doExport()
+{
+  extractor->exportSelections();
+}
+
+void MainWindow::loadFile(QString filename)
+{
+  setCursor(Qt::WaitCursor);
+  statusBar()->showMessage("Loading...");
+  qApp->processEvents();
+
+  sorter->setWavData(NULL, 0);
+  player.setPcmData(NULL, 0);
+
+  canvaswidget->canvas->load(filename);
+
+  sorter->setWavData(canvaswidget->canvas->data, canvaswidget->canvas->size);
+  player.setPcmData(canvaswidget->canvas->data, canvaswidget->canvas->size);
+
+  statusBar()->showMessage("Ready");
+  setCursor(Qt::ArrowCursor);
+}
+
+void MainWindow::setPreset(int index) 
+{
+  /*
+  QVariant v = presets->itemData(index);
+  Preset p = v.value<Preset>();
+  slider_attacklength->setValue(p.attacklength);
+  slider_falloff->setValue(p.falloff);
+  slider_fadelength->setValue(p.fadelength);
+  prefix->setText(p.prefix);
+  */
+}
+
+void MainWindow::browse() {
+  QString path = QFileDialog::getExistingDirectory(this, "Select export path",
+                                                   lineed_exportp->text());
+  lineed_exportp->setText(path);
+}
diff --git a/src/mainwindow.h b/src/mainwindow.h
new file mode 100644
index 0000000..69a4c5e
--- /dev/null
+++ b/src/mainwindow.h
@@ -0,0 +1,124 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            mainwindow.h
+ *
+ *  Tue Nov 10 10:21:03 CET 2009
+ *  Copyright 2009 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of DrumGizmo.
+ *
+ *  DrumGizmo is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  DrumGizmo is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with DrumGizmo; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#ifndef __DRUMGIZMO_MAINWINDOW_H__
+#define __DRUMGIZMO_MAINWINDOW_H__
+
+#include <QMainWindow>
+#include <QScrollBar>
+#include <QComboBox>
+#include <QSlider>
+#include <QLineEdit>
+#include <QCloseEvent>
+#include <QTabWidget>
+
+#include "canvas.h"
+#include "audioextractor.h"
+#include "samplesorter.h"
+#include "filelist.h"
+#include "canvastoolselections.h"
+#include "canvastoolthreshold.h"
+#include "canvastoollisten.h"
+#include "selection.h"
+#include "player.h"
+#include "zoomslider.h"
+#include "canvaswidget.h"
+
+class Preset {
+public:  
+  QString prefix;
+  int attacklength;
+  int falloff;
+  int fadelength;
+};
+Q_DECLARE_METATYPE(Preset)
+
+class MainWindow : public QMainWindow {
+Q_OBJECT
+public:
+  MainWindow();
+  ~MainWindow();
+
+public slots:
+  /*
+  void setXScale(float);
+  void setYScale(float);
+  void setXOffset(int);
+  void setYOffset(int);
+  */
+  void doExport();
+  void loadFile(QString filename);
+  void playSamples();
+  void setPreset(int);
+  void browse();
+  void tabChanged(int tabid);
+
+protected:
+  void closeEvent(QCloseEvent*);
+
+private:
+  void loadSettings();
+  void saveSettings();
+
+  QWidget *createFilesTab();
+  QWidget *createEditTab();
+  QWidget *createGenerateTab();
+  QWidget *createExportTab();
+
+  int generateTabId;
+
+  SampleSorter *sorter;
+  CanvasToolSelections *tool_selections;
+  CanvasToolThreshold *threshold;
+  CanvasToolListen *listen;
+  AudioExtractor *extractor;
+  FileList *filelist;
+
+  //Canvas *canvas;
+  //QScrollBar *yoffset;
+  //ZoomSlider *yscale;
+  //ZoomSlider *xscale;
+  //QScrollBar *xoffset;
+  CanvasWidget *canvaswidget;
+
+  QScrollBar *sb_playsamples;
+  QComboBox *presets;
+  QSlider *slider_attacklength;
+  QSlider *slider_hold;
+  QSlider *slider_falloff;
+  QSlider *slider_fadelength;
+  QLineEdit *prefix;
+  QLineEdit *lineed_exportp;
+
+  QTabWidget *tabs;
+
+  // Session state information:
+  Selections selections;
+  Selections selections_preview;
+  Player player;
+};
+
+#endif/*__DRUMGIZMO_MAINWINDOW_H__*/
diff --git a/src/mipmap.cc b/src/mipmap.cc
new file mode 100644
index 0000000..09b15b6
--- /dev/null
+++ b/src/mipmap.cc
@@ -0,0 +1,99 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            mipmap.cc
+ *
+ *  Fri Sep  3 16:39:46 CEST 2010
+ *  Copyright 2010 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of DrumGizmo.
+ *
+ *  DrumGizmo is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  DrumGizmo is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with DrumGizmo; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#include "mipmap.h"
+
+MipMap::MipMap(float *data, size_t size)
+{
+  this->data = data;
+  this->size = size;
+  this->zoom = 1;
+}
+
+MipMapValue MipMap::data_lookup(size_t begin, size_t end)
+{
+  MipMapValue val;
+
+  size_t numlavg = 0;
+  size_t numuavg = 0;
+  for(size_t i = begin; i <= end; i++) {
+    if(i > size || i < 0) break;
+    if(data[i] > val.max) val.max = data[i];
+    if(data[i] < val.min) val.min = data[i];
+    
+    if(data[i] > 0) { val.uavg += data[i]; numuavg++; }
+    if(data[i] < 0) { val.lavg += data[i]; numlavg++; }
+  }
+  
+  if(numlavg) val.lavg /= (float) numlavg;
+  if(numuavg) val.uavg /= (float) numuavg;
+
+  return val;
+}
+
+MipMapValue MipMap::mipmap_lookup(size_t begin, size_t end)
+{
+  MipMapValue val;
+
+  size_t numlavg = 0;
+  size_t numuavg = 0;
+  for(size_t i = begin; i <= end; i++) {
+    if(i > size || i < 0) break;
+    if(data[i] > val.max) val.max = data[i];
+    if(data[i] < val.min) val.min = data[i];
+    
+    if(data[i] > 0) { val.uavg += data[i]; numuavg++; }
+    if(data[i] < 0) { val.lavg += data[i]; numlavg++; }
+  }
+  
+  if(numlavg) val.lavg /= (float) numlavg;
+  if(numuavg) val.uavg /= (float) numuavg;
+
+  return val;
+}
+
+#define ABS(x) (x>0?x:-x)
+
+MipMapValue MipMap::lookup(size_t begin, size_t end)
+{
+  return data_lookup(begin, end);
+  /*
+
+  size_t zoom_factor = ABS(end - begin);
+
+  if(zoom_factor < zoom / 2) {
+    if(zoom == 1) { // Lookup in original data.
+      return data_lookup(begin, end);
+    }
+
+    return mipmap_lookup(begin, end);
+  }
+
+  if(lowerlevel) return lowerlevel->lookup(begin,end);
+
+  return MipMapValue();
+  */
+}
diff --git a/src/mipmap.h b/src/mipmap.h
new file mode 100644
index 0000000..550d6ae
--- /dev/null
+++ b/src/mipmap.h
@@ -0,0 +1,62 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            mipmap.h
+ *
+ *  Fri Sep  3 16:39:45 CEST 2010
+ *  Copyright 2010 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of DrumGizmo.
+ *
+ *  DrumGizmo is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  DrumGizmo is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with DrumGizmo; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#ifndef __DRUMGIZMO_MIPMAP_H__
+#define __DRUMGIZMO_MIPMAP_H__
+
+#include <QMap>
+#include <stddef.h>
+
+class MipMapValue {
+public:
+  MipMapValue() { max = min = uavg = lavg = 0.0; }
+  float max;
+  float min;
+  float uavg;
+  float lavg;
+};
+
+class MipMap {
+public:
+  MipMap(float *data, size_t size);
+
+  MipMapValue lookup(size_t begin, size_t end);
+
+private:
+  float *data;
+  size_t size;
+
+  MipMapValue *values;
+
+  size_t zoom;
+
+  MipMapValue data_lookup(size_t begin, size_t end);
+  MipMapValue mipmap_lookup(size_t begin, size_t end);
+
+  MipMap *lowerlevel;
+};
+
+#endif/*__DRUMGIZMO_MIPMAP_H__*/
diff --git a/src/player.cc b/src/player.cc
new file mode 100644
index 0000000..3a2bfd2
--- /dev/null
+++ b/src/player.cc
@@ -0,0 +1,190 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            player.cc
+ *
+ *  Tue Apr 15 10:34:18 CEST 2014
+ *  Copyright 2014 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of DrumGizmo.
+ *
+ *  DrumGizmo is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  DrumGizmo is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with DrumGizmo; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#include "player.h"
+
+#include <math.h>
+
+#define BUFSZ 512
+
+Player::Player()
+{
+  peak = 0;
+  pos = 0;
+  gain_scalar = 1.0;
+  pcm_data = NULL;
+  pcm_size = 0;
+  end = 0;
+  new_selection = false;
+
+  connect(&report_timer, SIGNAL(timeout()), this, SLOT(reportTimeout()));
+  report_timer.start(50); // Update 25 times per second
+
+  start();
+}
+
+Player::~Player()
+{
+  running = false; // Signal player thread to stop
+  wait(); // Wait for player thread to stop.
+}
+
+#define _MIN(a, b) (a<b?a:b)
+void Player::run()
+{
+  Selection sel;
+
+  ao_initialize();
+
+  ao_sample_format sf;
+  memset(&sf, 0, sizeof(sf));
+  sf.bits = 16;
+  sf.rate = 44100;
+  sf.channels = 1;
+  sf.byte_format = AO_FMT_NATIVE;
+
+  dev = ao_open_live(ao_default_driver_id(), &sf, 0);
+
+  running = true;
+
+  short s[BUFSZ];
+  while(running) {
+
+    { // Check for new Selection.
+      QMutexLocker lock(&mutex);
+      if(new_selection) {
+        sel = selection;
+        pos = sel.from;
+        end = sel_end;
+        new_selection = false;
+      }
+    }
+
+    for(size_t i = 0; i < BUFSZ; i++) {
+      double sample = 0.0;
+      size_t p = i + pos;
+      if(p < sel.to && p < end && p < pcm_size) {
+        double fade = 1;
+        if(p < (sel.from + sel.fadein)) {
+          // Apply linear fade-in
+          double fp = (double)((int)p - (int)sel.from);
+          fade = fp / (double)sel.fadeout;
+        }
+
+        if(p > (sel.to - sel.fadeout)) {
+          // Apply linear fade-out
+          double fp = (double)(((int)sel.to - (int)sel.fadeout) - (int)p);
+          fade = 1 + (fp / (double)sel.fadeout);
+        }
+
+        sample = pcm_data[p] * fade * gain_scalar;
+      }
+      if(fabs(sample) > peak) { 
+        peak = fabs(sample);
+      }
+      s[i] = _MIN(sample * SHRT_MAX, SHRT_MAX);
+    }
+    
+    ao_play(dev, (char*)s, BUFSZ * sizeof(short));
+
+    pos += BUFSZ;
+  }
+
+  ao_close(dev);
+  ao_shutdown();
+}
+
+bool Player::playSelectionDone()
+{
+  return pos >= sel_end || pos >= selection.to;
+}
+
+void Player::playSelection(Selection s, int len)
+{
+  { // Enqueue new Selection for player consumation
+    QMutexLocker lock(&mutex);
+
+    selection = s;
+
+    if(len > 0) sel_end = len;
+    else sel_end = selection.to - selection.from;
+    
+    sel_end += selection.from;
+
+    new_selection = true;
+  }
+
+  // Wait until player actually consumed the new Selection.
+  while(new_selection) {
+    msleep(1);
+  }
+}
+
+void Player::setGainScalar(double g)
+{
+  gain_scalar = g;
+}
+
+void Player::setGainDB(double gain_db)
+{
+  setGainScalar(pow(10, gain_db/ 20.0));
+}
+
+void Player::reportTimeout()
+{
+  emit peakUpdate(peak);
+  emit peakUpdateDB(20 * log10(peak));
+  peak = 0.0;
+
+  emit positionUpdate(pos);
+  peak = 0.0;
+}
+
+void Player::setPcmData(float *data, size_t size)
+{
+  pcm_data = data;
+  pcm_size = size;
+}
+
+void Player::setPosition(size_t position)
+{
+  Selection s;
+  s.from = position;
+  s.to = pcm_size;
+  s.fadein = 0;
+  s.fadeout = 0;
+  playSelection(s);
+}
+
+void Player::stop()
+{
+  Selection s;
+  s.from = 0;
+  s.to = 0;
+  s.fadein = 0;
+  s.fadeout = 0;
+  playSelection(s, pos);
+}
diff --git a/src/player.h b/src/player.h
new file mode 100644
index 0000000..60b2ccb
--- /dev/null
+++ b/src/player.h
@@ -0,0 +1,131 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            player.h
+ *
+ *  Tue Apr 15 10:34:18 CEST 2014
+ *  Copyright 2014 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of DrumGizmo.
+ *
+ *  DrumGizmo is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  DrumGizmo is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with DrumGizmo; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#ifndef __DRUMGIZMO_PLAYER_H__
+#define __DRUMGIZMO_PLAYER_H__
+
+#include <QThread>
+#include <QTimer>
+#include <QMutex>
+
+#include <ao/ao.h>
+
+#include "selection.h"
+
+class Player : public QThread {
+Q_OBJECT
+public:
+  Player();
+  ~Player();
+
+  void run();
+
+  // TODO: Make these private.
+  // These two need to be public in order for the ugly hack in
+  //  CanvasToolListen::playRange to work...
+  //  volatile bool playing;
+  volatile size_t pos;
+  volatile size_t end;
+
+public slots:
+  /**
+   * Assign PCM data to the player.
+   */
+  void setPcmData(float *data, size_t num_samples);
+
+  /**
+   * Set gain scalar.
+   * This value is multiplied with each sample before it is played.
+   */
+  void setGainScalar(double gain_scalar);
+
+  /**
+   * Set gain is dB.
+   * Convenience method for setGainScalar. It simple recalculates the dB value
+   * to a scalar and sets the gain scalar accordingly.
+   */
+  void setGainDB(double gain_db);
+
+  /**
+   * Set player position as sample offset.
+   */
+  void setPosition(size_t position);
+
+  /**
+   * Play range based on selection including fade-in/out.
+   * @param length Stop playing after length samples. -1 means play all.
+   */
+  void playSelection(Selection selection, int length = -1);
+
+  /**
+   * Return true if last selection is done playing.
+   */
+  bool playSelectionDone();
+
+  /**
+   * Stop playing
+   */
+  void stop();
+
+signals:
+  /**
+   * The absolute maximum of samples seen since last update.
+   */
+  void peakUpdate(double peak);
+
+  /**
+   * The absolute maximum of samples seen since last update in dB.
+   */
+  void peakUpdateDB(double peak_db);
+
+  /**
+   * The sample position of the player.
+   */
+  void positionUpdate(size_t position);
+
+private slots:
+  void reportTimeout();
+
+private:
+  ao_device *dev;  
+
+  float *pcm_data;
+  size_t pcm_size;
+
+  QTimer report_timer;
+
+  double gain_scalar;
+  double peak;
+
+  bool running;
+
+  QMutex mutex;
+  volatile bool new_selection;
+  size_t sel_end;
+  Selection selection;
+};
+
+#endif/*__DRUMGIZMO_PLAYER_H__*/
diff --git a/src/samplesorter.cc b/src/samplesorter.cc
new file mode 100644
index 0000000..00139e2
--- /dev/null
+++ b/src/samplesorter.cc
@@ -0,0 +1,271 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            samplesorter.cc
+ *
+ *  Mon Nov 30 07:45:58 CET 2009
+ *  Copyright 2009 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of DrumGizmo.
+ *
+ *  DrumGizmo is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  DrumGizmo is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with DrumGizmo; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#include "samplesorter.h"
+
+#include <QPainter>
+#include <QPaintEvent>
+
+#include <stdio.h>
+
+#include <math.h>
+#ifndef MAXFLOAT
+#define MAXFLOAT (3.40282347e+38F)
+#endif
+
+SampleSorter::SampleSorter(Selections &s, Selections &p)
+  : selections(s), selections_preview(p)
+{
+  setMouseTracking(true);
+
+  data = NULL;
+  size = 0;
+  attlen = 666; // Magical constants needs biblical proportions...
+
+  sel_moving = SEL_NONE;
+}
+
+void SampleSorter::setShowPreview(bool s)
+{
+  show_preview = s;
+  update();
+}
+
+void SampleSorter::setWavData(const float *data, size_t size)
+{
+  this->data = data;
+  this->size = size;
+  relayout();
+}
+
+int SampleSorter::attackLength()
+{
+  return attlen;
+}
+
+void SampleSorter::setAttackLength(int len)
+{
+  attlen = len;
+  relayout();
+}
+
+void SampleSorter::addSelection(sel_id_t id)
+{
+  Selection s = selections.get(id);
+
+  double energy = 0.0;
+  for(size_t idx = s.from;
+      (idx < (size_t)s.from + (size_t)attackLength()) &&
+        (idx < (size_t)s.to) && (idx < size);
+      idx++) {
+    energy += data[idx] * data[idx];
+  }
+    
+  s.energy = energy;
+  selections.update(id, s);
+
+  relayout();
+}
+
+void SampleSorter::addSelectionPreview(sel_id_t id)
+{
+  Selection s = selections_preview.get(id);
+
+  double energy = 0.0;
+  for(size_t idx = s.from;
+      (idx < (size_t)s.from + (size_t)attackLength()) &&
+        (idx < (size_t)s.to) && (idx < size);
+      idx++) {
+    energy += data[idx] * data[idx];
+  }
+    
+  s.energy = energy;
+  selections_preview.update(id, s);
+
+  relayout();
+}
+
+void SampleSorter::relayout()
+{
+  min = MAXFLOAT;
+  max = 0.0;
+
+  {
+    QVector<sel_id_t> ids = selections.ids();
+    QVector<sel_id_t>::iterator i = ids.begin();
+    while(i != ids.end()) {
+      Selection sel = selections.get(*i);
+      
+      if(sel.energy < min) min = sel.energy;
+      if(sel.energy > max) max = sel.energy;
+      
+      i++;
+    }
+  }
+
+  if(show_preview) {
+    QVector<sel_id_t> ids = selections_preview.ids();
+    QVector<sel_id_t>::iterator i = ids.begin();
+    while(i != ids.end()) {
+      Selection sel = selections_preview.get(*i);
+      
+      if(sel.energy < min) min = sel.energy;
+      if(sel.energy > max) max = sel.energy;
+      
+      i++;
+    }
+  }
+
+  update();
+}
+
+#define MAP(p) (height()-(int)(p*((float)height()/(float)width())))
+
+#define unmapX(x) ((double)x/(double)(width()-1))
+#define unmapY(x) x
+#define mapX(x) (((double)x)*(width()-1))
+#define mapY(x) x
+
+#define C_RADIUS 2
+static void drawCircle(QPainter &p, int x, int y)
+{
+  p.drawEllipse(x - C_RADIUS, y - C_RADIUS, 2 * C_RADIUS, 2 * C_RADIUS);
+}
+
+void SampleSorter::paintEvent(QPaintEvent *event)
+{
+  QPainter painter(this);
+
+  QColor colBg = QColor(180, 200, 180, 160);
+  QColor colFg = QColor(160, 180, 160, 160);
+  QColor colPt = QColor(255, 100, 100, 160);
+  QColor colPtPreview = QColor(0, 0, 255, 160);
+  QColor colPtSel = QColor(255, 255, 100, 160);
+
+  painter.setPen(colBg);
+  painter.setBrush(colBg);
+  painter.drawRect(event->rect());
+
+  painter.setPen(colFg);
+  painter.drawLine(0,height(),width(),0);
+  
+  {
+    QVector<sel_id_t> ids = selections.ids();
+    QVector<sel_id_t>::iterator i = ids.begin();
+    while(i != ids.end()) {
+      Selection sel = selections.get(*i);
+      if(*i == selections.active()) painter.setPen(colPtSel);
+      else painter.setPen(colPt);
+      float x = sel.energy / max;
+      x = sqrt(x);
+      x *= (float)width();
+      drawCircle(painter, x, MAP(x));
+      i++;
+    }
+  }
+
+  if(show_preview) {
+    QVector<sel_id_t> ids = selections_preview.ids();
+    QVector<sel_id_t>::iterator i = ids.begin();
+    while(i != ids.end()) {
+      Selection sel = selections_preview.get(*i);
+      painter.setPen(colPtPreview);
+      float x = sel.energy / max;
+      x = sqrt(x);
+      x *= (float)width();
+      drawCircle(painter, x, MAP(x));
+      i++;
+    }
+  }
+
+
+}
+
+sel_id_t SampleSorter::getSelectionByCoordinate(int px, int py)
+{
+  // Hit radius is slithly larger than the circles themselves.
+  int hit_r = C_RADIUS + 1;
+
+  QVector<sel_id_t> ids = selections.ids();
+  QVector<sel_id_t>::iterator i = ids.begin();
+  while(i != ids.end()) {
+    Selection sel = selections.get(*i);
+    float x = (sel.energy/max);
+    x = sqrt(x);
+    x *= (float)width();
+    if(px < (x + hit_r) && px > (x - hit_r) &&
+       py < (MAP(x) + hit_r) && py > (MAP(x) - hit_r)) {
+      return *i;
+    }
+    i++;
+  }
+
+  return SEL_NONE;
+}
+
+void SampleSorter::mouseMoveEvent(QMouseEvent *event)
+{
+  if(sel_moving != SEL_NONE) {
+    Selection sel = selections.get(sel_moving);
+    if(sel_moving != SEL_NONE) {
+      double power = unmapX(event->x());
+      power *= power;
+      power *= max;
+      sel.energy = power;
+      selections.update(sel_moving, sel);
+    }
+
+    update();
+    return;
+  } else {
+    sel_id_t psel = getSelectionByCoordinate(event->x(), event->y());
+    if(psel != SEL_NONE) {
+      setCursor(Qt::UpArrowCursor);
+    } else {
+      setCursor(Qt::ArrowCursor);
+    }
+  }
+}
+
+void SampleSorter::mousePressEvent(QMouseEvent *event)
+{
+  if(event->button() == Qt::LeftButton) {
+    sel_id_t psel = getSelectionByCoordinate(event->x(), event->y());
+    sel_moving = psel;
+    selections.setActive(psel);
+    if(psel != SEL_NONE) {
+      setCursor(Qt::UpArrowCursor);
+    }
+  }
+}
+
+void SampleSorter::mouseReleaseEvent(QMouseEvent *event)
+{
+  if(event->button() == Qt::LeftButton) {
+    sel_moving = SEL_NONE;
+    setCursor(Qt::ArrowCursor);
+  }
+}
diff --git a/src/samplesorter.h b/src/samplesorter.h
new file mode 100644
index 0000000..ada7fd8
--- /dev/null
+++ b/src/samplesorter.h
@@ -0,0 +1,78 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            samplesorter.h
+ *
+ *  Mon Nov 30 07:45:58 CET 2009
+ *  Copyright 2009 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of DrumGizmo.
+ *
+ *  DrumGizmo is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  DrumGizmo is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with DrumGizmo; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#ifndef __DRUMGIZMO_SAMPLESORTER_H__
+#define __DRUMGIZMO_SAMPLESORTER_H__
+
+#include <QWidget>
+#include <QVector>
+#include "selection.h"
+
+class SampleSorter : public QWidget {
+Q_OBJECT
+public:
+  SampleSorter(Selections &selections, Selections &selections_preview);
+
+public slots:
+  void setWavData(const float *data, size_t size);
+  void setAttackLength(int len);
+  int attackLength();
+
+  void addSelection(sel_id_t id);
+  void addSelectionPreview(sel_id_t id);
+
+  void relayout();
+
+  void setShowPreview(bool show_preview);
+
+protected:
+  void paintEvent(QPaintEvent *event);
+  void mouseMoveEvent(QMouseEvent *event);
+  void mousePressEvent(QMouseEvent *event);
+  void mouseReleaseEvent(QMouseEvent *event);
+
+private:
+  sel_id_t getSelectionByCoordinate(int x, int y);
+
+  Selections &selections;
+  Selections &selections_preview;
+
+  bool show_preview;
+
+  float min;
+  float max;
+  int attlen;
+
+  // Wav data
+  const float *data;
+  size_t size;
+
+  Selection sel;
+
+  sel_id_t sel_moving;
+};
+
+#endif/*__DRUMGIZMO_SAMPLESORTER_H__*/
diff --git a/src/selection.cc b/src/selection.cc
new file mode 100644
index 0000000..c0300a4
--- /dev/null
+++ b/src/selection.cc
@@ -0,0 +1,106 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            selection.cc
+ *
+ *  Mon Apr 14 10:13:21 CEST 2014
+ *  Copyright 2014 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of DrumGizmo.
+ *
+ *  DrumGizmo is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  DrumGizmo is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with DrumGizmo; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#include "selection.h"
+
+Selections::Selections()
+  : QObject(NULL)
+{
+  nextid = 0;
+  act = SEL_NONE;
+}
+
+sel_id_t Selections::add(Selection selection)
+{
+  sel_id_t id = nextid++;
+  sels[id] = selection;
+  added(id);
+  return id;
+}
+
+Selection Selections::get(sel_id_t id)
+{
+  if(sels.find(id) == sels.end()) {
+    Selection s(0,0,0,0);
+    return s;
+  }
+  return sels[id];
+}
+
+QVector<sel_id_t> Selections::ids()
+{
+  QVector<sel_id_t> v;
+
+  QMap<sel_id_t, Selection>::iterator i = sels.begin();
+  while(i != sels.end()) {
+    v.push_back(i.key());
+    i++;
+  }
+
+  return v;
+}
+
+void Selections::update(sel_id_t id, Selection selection)
+{
+  if(sels.find(id) != sels.end()) {
+    sels[id] = selection;
+    emit updated(id);
+  }
+}
+
+void Selections::remove(sel_id_t id)
+{
+  if(sels.find(id) != sels.end()) {
+    sels.erase(sels.find(id));
+    if(id == act) setActive(SEL_NONE);
+    emit removed(id);
+  }
+}
+
+void Selections::clear()
+{
+  QVector<sel_id_t> _ids = ids();
+  QVector<sel_id_t>::iterator i = _ids.begin();
+  while(i != _ids.end()) {
+    remove(*i);
+    i++;
+  }
+}
+
+void Selections::setActive(sel_id_t id)
+{
+  if(sels.find(id) != sels.end()) {
+    act = id;
+  } else {
+    act = SEL_NONE;
+  }
+  emit activeChanged(act);
+}
+
+sel_id_t Selections::active()
+{
+  return act;
+}
diff --git a/src/selection.h b/src/selection.h
new file mode 100644
index 0000000..c6c7ecc
--- /dev/null
+++ b/src/selection.h
@@ -0,0 +1,135 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            selection.h
+ *
+ *  Sat Nov 21 13:20:46 CET 2009
+ *  Copyright 2009 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of DrumGizmo.
+ *
+ *  DrumGizmo is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  DrumGizmo is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with DrumGizmo; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#ifndef __DRUMGIZMO_SELECTION_H__
+#define __DRUMGIZMO_SELECTION_H__
+
+#include <QObject>
+
+#include <QMap>
+#include <QVector>
+
+class Selection {
+public:
+  Selection(int from = 0, int to = 0, int fadein = 0, int fadeout = 0) {
+    this->from = from;
+    this->to = to;
+    this->fadein = fadein;
+    this->fadeout = fadeout;
+  }
+  size_t from;
+  size_t to;
+  size_t fadein;
+  size_t fadeout;
+
+  double energy;
+
+  QString name;
+};
+
+typedef int sel_id_t;
+#define SEL_NONE -1
+
+class Selections : public QObject {
+Q_OBJECT
+public:
+  Selections();
+
+  /**
+   * Add a new selection object. The new id is returned.
+   * Adding a new selections will emit an added signal with the new id.
+   */
+  sel_id_t add(Selection selection);
+
+  /**
+   * Get a stack copy of a specific selection object, by id.
+   * NOTE: If id does not exist an empty selection (from = to = 0) is
+   * returned.
+   */
+  Selection get(sel_id_t id);
+
+  /**
+   * Return vector (unsorted) of all ids in the object.
+   */
+  QVector<sel_id_t> ids();
+
+  /**
+   * Set active selection (to be rendered yellow)
+   */
+  void setActive(sel_id_t id);
+
+  /**
+   * Get active selection id.
+   */
+  sel_id_t active();
+
+public slots:
+  /**
+   * Update a selection by id.
+   * Updating a selection will emit a updated signal.
+   */
+  void update(sel_id_t id, Selection selection);
+
+  /**
+   * Delete a selection by id.
+   * Deleting a selection will emit a deleted signal.
+   */
+  void remove(sel_id_t id);
+
+  /**
+   * Delete all selections
+   */
+  void clear();
+
+signals:
+  /**
+   * This signal is emitted when a new selection has been added.
+   */
+  void added(sel_id_t id);
+
+  /**
+   * This signal is emitted when an existing selection has been updated.
+   */
+  void updated(sel_id_t id);
+
+  /**
+   * This signal is emitted when a selection has been removed.
+   */
+  void removed(sel_id_t id);
+
+  /**
+   * The active selection changed.
+   */
+  void activeChanged(sel_id_t id);
+
+private:
+  QMap<sel_id_t, Selection> sels;
+  sel_id_t nextid;
+  sel_id_t act;
+};
+
+
+#endif/*__DRUMGIZMO_SELECTION_H__*/
diff --git a/src/selectioneditor.cc b/src/selectioneditor.cc
new file mode 100644
index 0000000..e8db104
--- /dev/null
+++ b/src/selectioneditor.cc
@@ -0,0 +1,114 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            selectioneditor.cc
+ *
+ *  Thu Apr 17 17:25:18 CEST 2014
+ *  Copyright 2014 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of DrumGizmo.
+ *
+ *  DrumGizmo is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  DrumGizmo is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with DrumGizmo; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#include "selectioneditor.h"
+
+#include <QHBoxLayout>
+#include <QVBoxLayout>
+#include <QLabel>
+
+QLineEdit *createWidget(QString name, QWidget *parent)
+{
+  QHBoxLayout *l = new QHBoxLayout();
+
+  l->addWidget(new QLabel(name));
+  
+  QLineEdit *edt = new QLineEdit();
+  QObject::connect(edt, SIGNAL(editingFinished()),
+                   parent, SLOT(updateSelection()));
+
+  l->addWidget(edt);
+
+  ((QHBoxLayout *)parent->layout())->addLayout(l);
+  
+  return edt;
+}
+
+SelectionEditor::SelectionEditor(Selections &s)
+  : selections(s)
+{
+  cur = SEL_NONE;
+
+  setLayout(new QVBoxLayout());
+
+  from = createWidget("From:", this);
+  to = createWidget("To:", this);
+  fadein = createWidget("FadeIn:", this);
+  fadeout = createWidget("FadeOut:", this);
+  energy = createWidget("Energy:", this);
+  name = createWidget("Name:", this);
+}
+
+void SelectionEditor::updateSelection()
+{
+  Selection sel;
+
+  sel.from = from->text().toInt();
+  sel.to = to->text().toInt();
+  sel.fadein = fadein->text().toInt();
+  sel.fadeout = fadeout->text().toInt();
+  sel.energy = energy->text().toDouble();
+  sel.name = name->text();
+
+  selections.update(cur, sel);
+}
+
+void SelectionEditor::update()
+{
+  Selection sel = selections.get(cur);
+  from->setText(QString::number(sel.from));
+  to->setText(QString::number(sel.to));
+  fadein->setText(QString::number(sel.fadein));
+  fadeout->setText(QString::number(sel.fadeout));
+  energy->setText(QString::number(sel.energy));
+  name->setText(sel.name);
+}
+
+void SelectionEditor::added(sel_id_t id)
+{
+  // Nothing to do here...
+}
+
+void SelectionEditor::updated(sel_id_t id)
+{
+  if(cur == id) {
+    update();
+  }
+}
+
+void SelectionEditor::removed(sel_id_t id)
+{
+  if(cur == id) {
+    cur = SEL_NONE;
+    update();
+  }
+}
+
+void SelectionEditor::activeChanged(sel_id_t id)
+{
+  cur = id;
+  update();
+}
diff --git a/src/selectioneditor.h b/src/selectioneditor.h
new file mode 100644
index 0000000..55d8e33
--- /dev/null
+++ b/src/selectioneditor.h
@@ -0,0 +1,63 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            selectioneditor.h
+ *
+ *  Thu Apr 17 17:25:17 CEST 2014
+ *  Copyright 2014 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of DrumGizmo.
+ *
+ *  DrumGizmo is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  DrumGizmo is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with DrumGizmo; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#ifndef __DRUMGIZMO_SELECTIONEDITOR_H__
+#define __DRUMGIZMO_SELECTIONEDITOR_H__
+
+#include <QWidget>
+
+#include <QLineEdit>
+#include "selection.h"
+
+class SelectionEditor : public QWidget {
+Q_OBJECT
+public:
+  SelectionEditor(Selections &selections);
+
+public slots:
+  void added(sel_id_t id);
+  void updated(sel_id_t id);
+  void removed(sel_id_t id);
+  void activeChanged(sel_id_t id);
+
+private slots:
+  void update();
+  void updateSelection();
+
+private:
+  Selections &selections;
+
+  sel_id_t cur;
+
+  QLineEdit *from;
+  QLineEdit *to;
+  QLineEdit *fadein;
+  QLineEdit *fadeout;
+  QLineEdit *energy;
+  QLineEdit *name;
+};
+
+#endif/*__DRUMGIZMO_SELECTIONEDITOR_H__*/
diff --git a/src/sleep.h b/src/sleep.h
new file mode 100644
index 0000000..107b7a8
--- /dev/null
+++ b/src/sleep.h
@@ -0,0 +1,57 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            sleep.h
+ *
+ *  Sun Apr 20 18:54:58 CEST 2014
+ *  Copyright 2014 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of DrumGizmo.
+ *
+ *  DrumGizmo is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  DrumGizmo is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with DrumGizmo; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#ifndef __DRUMGIZMO_SLEEP_H__
+#define __DRUMGIZMO_SLEEP_H__
+
+#include <QThread>
+
+class __Sleeper : public QThread {
+public:
+  void msleep(unsigned long msecs) { QThread::msleep(msecs); }
+  void sleep(unsigned long secs) { QThread::sleep(secs); }
+  void usleep(unsigned long usecs) { QThread::usleep(usecs); }
+};
+
+inline void q_msleep(unsigned long msecs)
+{
+  __Sleeper s;
+  s.msleep(msecs);
+}
+
+inline void q_sleep(unsigned long secs)
+{
+  __Sleeper s;
+  s.sleep(secs);
+}
+
+inline void q_usleep(unsigned long usecs)
+{
+  __Sleeper s;
+  s.usleep(usecs);
+}
+
+#endif/*__DRUMGIZMO_SLEEP_H__*/
diff --git a/src/volumefader.cc b/src/volumefader.cc
new file mode 100644
index 0000000..08bab80
--- /dev/null
+++ b/src/volumefader.cc
@@ -0,0 +1,97 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            volumefader.cc
+ *
+ *  Tue Apr 15 15:46:00 CEST 2014
+ *  Copyright 2014 Jonas Suhr Christensen
+ *  jsc@umbraculum.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of DrumGizmo.
+ *
+ *  DrumGizmo is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  DrumGizmo is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with DrumGizmo; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#include "volumefader.h"
+
+#include <QSlider>
+#include <QVBoxLayout>
+
+#include <math.h>
+
+#define SCALAR 10
+#define P 0.5
+
+VolumeFader::VolumeFader() 
+{
+  peak = 0;
+  volslider = new QSlider();
+  volslider->setRange(-60 * SCALAR , 10 * SCALAR);
+  volslider->setOrientation(Qt::Horizontal);
+
+  volumepeak = new QLabel();
+
+  volume = new QLabel();
+
+  connect(volslider, SIGNAL(valueChanged(int)), this, SLOT(handleValueChanged()));
+
+  QVBoxLayout* lo = new QVBoxLayout();
+  lo->addWidget(volslider);
+  
+  lo->addWidget(volumepeak);
+  lo->addWidget(volume);
+
+  setLayout(lo);
+}
+
+VolumeFader::~VolumeFader()
+{
+
+}
+
+void VolumeFader::updatePeakDb(double db) 
+{
+//  updatePeakPower(pow(10, db/20));
+}
+
+void VolumeFader::updatePeakPower(double newpeak)
+{
+  peak = (newpeak * (1.0-P) + peak * P);
+  volumepeak->setText("Peak " + QString::number(peak, 'f', 5));
+  handleValueChanged();
+}
+
+void VolumeFader::setVolumeDb(double db)
+{
+  volslider->setValue(db*SCALAR); 
+  handleValueChanged();
+}
+
+void VolumeFader::setVolumePower(double power)
+{
+  double db = 20 * log10(power);
+  setVolumeDb(db);
+  handleValueChanged();
+}
+
+void VolumeFader::handleValueChanged() 
+{
+  double db = ((double)volslider->value())/((double)SCALAR);
+  double power = pow(10, db/20);
+  emit volumeChangedDb(db);
+  emit volumeChangedPower(power);
+
+  volume->setText("Gain " + QString::number(volslider->value()/SCALAR) + " dB");
+}
diff --git a/src/volumefader.h b/src/volumefader.h
new file mode 100644
index 0000000..7209956
--- /dev/null
+++ b/src/volumefader.h
@@ -0,0 +1,65 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            volumefader.h
+ *
+ *  Tue Apr 15 15:46:00 CEST 2014
+ *  Copyright 2014 Jonas Suhr Christensen
+ *  jsc@umbraculum.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of DrumGizmo.
+ *
+ *  DrumGizmo is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  DrumGizmo is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with DrumGizmo; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#ifndef __DRUMGIZMO_VOLUMEFADER_H__
+#define __DRUMGIZMO_VOLUMEFADER_H__
+
+#include <QWidget>
+#include <QSlider>
+#include <QLabel>
+
+#include <stdio.h>
+
+class VolumeFader : public QWidget {
+Q_OBJECT
+public:
+  VolumeFader();
+  ~VolumeFader();
+
+  void volumeDb();
+  void volumePower();
+
+public slots:
+  void updatePeakDb(double vol);
+  void updatePeakPower(double vol);
+  void setVolumeDb(double vol);
+  void setVolumePower(double vol);
+
+private slots:
+  void handleValueChanged();
+
+signals:
+  void volumeChangedDb(double vol);
+  void volumeChangedPower(double vol);
+
+private:
+  QSlider *volslider;
+  QLabel *volumepeak;
+  QLabel *volume;
+  double peak;
+};
+
+#endif/*__DRUMGIZMO_VOLUMEFADER_H__*/
diff --git a/src/zoomslider.cc b/src/zoomslider.cc
new file mode 100644
index 0000000..0a2abb1
--- /dev/null
+++ b/src/zoomslider.cc
@@ -0,0 +1,108 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            zoomslider.cc
+ *
+ *  Fri May  2 21:23:26 CEST 2014
+ *  Copyright 2014 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of DrumGizmo.
+ *
+ *  DrumGizmo is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  DrumGizmo is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with DrumGizmo; if not, write to the 45Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#include "zoomslider.h"
+
+#include <QPainter>
+
+ZoomSlider::ZoomSlider(Qt::Orientation orientation)
+  : QSlider(orientation)
+{
+  inverted = false;
+  from = 0;
+  to = 1;
+  tick_width = 0.1;
+
+  connect(this, SIGNAL(valueChanged(int)), this, SLOT(sliderValueChanged(int)));
+}
+
+void ZoomSlider::paintEvent(QPaintEvent *ev)
+{
+  /*
+  QPainter p(this);
+  p.drawLine(0, 0, width(), height());
+  */
+  QSlider::paintEvent(ev);
+}
+
+void ZoomSlider::setRange(float from, float to)
+{
+  this->inverted = false;
+  this->from = from;
+  this->to = to;
+
+  int i_from = from / tick_width;
+  int i_to = to / tick_width;
+
+  if(i_from > i_to) {
+    this->inverted = true;
+    int tmp;
+    tmp = i_from;
+    i_from = i_to;
+    i_to = tmp;
+  }
+
+  QSlider::setRange(i_from, i_to);
+}
+
+float ZoomSlider::fromSlider(int value)
+{
+  float val = (float)value * tick_width;
+
+  if(inverted) {
+    val *= -1;
+    val = val - to + from;
+
+    if(value == QSlider::minimum()) val = from;
+    if(value == QSlider::maximum()) val = to;
+  } else {
+    if(value == QSlider::minimum()) val = from;
+    if(value == QSlider::maximum()) val = to;
+  }
+
+  return val;
+}
+
+void ZoomSlider::sliderValueChanged(int value)
+{
+  emit valueChanged(fromSlider(value));
+}
+
+void ZoomSlider::setTickWidth(float tick_width)
+{
+  this->tick_width = tick_width;
+  setRange(from, to); // Update slider value span.
+}
+
+void ZoomSlider::setValue(float value)
+{
+  int i_value = value * tick_width;
+  if(inverted) {
+    i_value *= -1;
+    i_value += from;
+  }
+  QSlider::setValue(i_value);
+}
diff --git a/src/zoomslider.h b/src/zoomslider.h
new file mode 100644
index 0000000..60b6772
--- /dev/null
+++ b/src/zoomslider.h
@@ -0,0 +1,73 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            zoomslider.h
+ *
+ *  Fri May  2 21:23:26 CEST 2014
+ *  Copyright 2014 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of DrumGizmo.
+ *
+ *  DrumGizmo is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  DrumGizmo is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with DrumGizmo; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#ifndef __DRUMGIZMO_ZOOMSLIDER_H__
+#define __DRUMGIZMO_ZOOMSLIDER_H__
+
+#include <QSlider>
+#include <QObject>
+
+class ZoomSlider : public QSlider {
+Q_OBJECT
+public:
+  ZoomSlider(Qt::Orientation orientation);
+
+  /**
+   * Range of the slider. 'from' may be lesser than 'to' which will invert the
+   * slider.
+   */
+  void setRange(float from, float to);
+
+  /**
+   * Set the distance between emitting of valueChanged signals.
+   * Example: from:=0, to:=1 and width:=0.5 will emit valueChanged signals on
+   * 0.0, 0.5 and 1.0 (ie. the slider will have 3 actual values)
+   * NOTE: If 'width' is greater than the span of [from; to] only the 'from'
+   * and 'to' values can be selected on the slider.
+   */
+  void setTickWidth(float width);
+  
+  void setValue(float value);
+
+signals:
+  void valueChanged(float value);
+
+private slots:
+  void sliderValueChanged(int value);
+
+protected:
+  void paintEvent(QPaintEvent *ev);
+
+private:
+  float fromSlider(int value);
+
+  bool inverted;
+  float from;
+  float to;
+  float tick_width;
+};
+
+#endif/*__DRUMGIZMO_ZOOMSLIDER_H__*/