From 644c3996fe91f35bcdc84e0c3bb4f906be740bae Mon Sep 17 00:00:00 2001
From: Bent Bisballe Nyeng <deva@aasimon.org>
Date: Wed, 2 Apr 2014 21:12:41 +0200
Subject: Warning: Ugly hack ahead... Initial attempt at a 'play sample
 selections ordered by sorting' feature.

---
 dgedit/canvastoollisten.cc | 18 ++++++++++++++++++
 dgedit/canvastoollisten.h  |  2 ++
 dgedit/mainwindow.cc       | 36 ++++++++++++++++++++++++++++++++++--
 dgedit/mainwindow.h        |  2 ++
 4 files changed, 56 insertions(+), 2 deletions(-)

diff --git a/dgedit/canvastoollisten.cc b/dgedit/canvastoollisten.cc
index f638f93..35b619b 100644
--- a/dgedit/canvastoollisten.cc
+++ b/dgedit/canvastoollisten.cc
@@ -26,6 +26,8 @@
  */
 #include "canvastoollisten.h"
 
+#include <QApplication>
+
 #define BUFSZ 1024 * 2
 
 Player::Player(Canvas *c)
@@ -140,3 +142,19 @@ void CanvasToolListen::setVolume(int v)
 {
   player.setVolume(v);
 }
+
+#include <unistd.h>
+void CanvasToolListen::playRange(unsigned int from, unsigned int to)
+{
+  player.pos = from;
+  player.playing = true;
+  canvas->update();
+  timer.start(50);
+  printf("start\n");
+  while(player.pos < to) {
+    qApp->processEvents();
+    usleep(10000);
+  }
+  player.playing = false;
+  printf("stop\n");
+}
diff --git a/dgedit/canvastoollisten.h b/dgedit/canvastoollisten.h
index 090d83b..dccc3f9 100644
--- a/dgedit/canvastoollisten.h
+++ b/dgedit/canvastoollisten.h
@@ -64,6 +64,8 @@ public:
   bool mouseReleaseEvent(QMouseEvent *event);
   void paintEvent(QPaintEvent *event, QPainter &painter);
 
+  void playRange(unsigned int from, unsigned int to);
+  
 public slots:
   void update();
   void setVolume(int v);
diff --git a/dgedit/mainwindow.cc b/dgedit/mainwindow.cc
index 30cd626..5a901c7 100644
--- a/dgedit/mainwindow.cc
+++ b/dgedit/mainwindow.cc
@@ -60,6 +60,7 @@ static void addTool(QToolBar *toolbar, Canvas *canvas, CanvasTool *tool)
   canvas->tools.push_back(tool);
 }
 
+static CanvasToolListen *g_listen;
 MainWindow::MainWindow()
 {
   QWidget *central = new QWidget();
@@ -72,7 +73,8 @@ MainWindow::MainWindow()
   canvas = new Canvas(this);
 
   QToolBar *toolbar = addToolBar("Tools");
-  CanvasTool *listen = new CanvasToolListen(canvas);
+  g_listen = new CanvasToolListen(canvas);
+  CanvasTool *listen = g_listen;
   addTool(toolbar, canvas, listen);
   CanvasTool *threshold = new CanvasToolThreshold(canvas);
   addTool(toolbar, canvas, threshold);
@@ -120,6 +122,13 @@ MainWindow::MainWindow()
   connect(sorter, SIGNAL(activeSelectionChanged(Selection)),
           selections, SLOT(setActiveSelection(Selection)));
 
+  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(canvas);
   lh->addWidget(yscale);
   lh->addWidget(yoffset);
@@ -127,7 +136,8 @@ MainWindow::MainWindow()
   lv->addWidget(xscale, 100);
   lv->addWidget(xoffset, 100);
   lv->addWidget(sorter, 15);
-
+  lv->addWidget(btn_playsamples);
+  lv->addWidget(sb_playsamples);
 
   QHBoxLayout *btns = new QHBoxLayout();
 
@@ -229,6 +239,28 @@ MainWindow::MainWindow()
   statusBar()->showMessage("Ready");
 }
 
+void MainWindow::playSamples()
+{
+  //  unsigned int length = 44100 / 4; // 0.25 seconds in 44k1Hz
+
+  Selections sels = sorter->selections();
+  Selections::iterator i = sels.begin();
+  while(i != sels.end()) {
+    unsigned int length = sb_playsamples->value() * 44100 / 1000;
+
+    unsigned int sample_length = i->to - i->from;
+
+    unsigned int to = i->to;
+    unsigned int sleep = 0;
+
+    if(sample_length > length) to = i->from + length;
+    else sleep = length - sample_length;
+    g_listen->playRange(i->from, to);
+    usleep(1000000 * sleep / 44100);
+    i++;
+  }
+}
+
 void MainWindow::closeEvent(QCloseEvent *)
 {
   saveSettings();
diff --git a/dgedit/mainwindow.h b/dgedit/mainwindow.h
index f6fff27..886f9cb 100644
--- a/dgedit/mainwindow.h
+++ b/dgedit/mainwindow.h
@@ -47,6 +47,7 @@ public slots:
   void setYOffset(int);
   void doExport();
   void loadFile(QString filename);
+  void playSamples();
 
 protected:
   void closeEvent(QCloseEvent*);
@@ -63,6 +64,7 @@ private:
   QScrollBar *yscale;
   QScrollBar *xscale;
   QScrollBar *xoffset;
+  QScrollBar *sb_playsamples;
 };
 
 #endif/*__DRUMGIZMO_MAINWINDOW_H__*/
-- 
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