From 7776aa97fc1c69a8f28ba4bab7387fb96be9a6e4 Mon Sep 17 00:00:00 2001 From: Bent Bisballe Nyeng Date: Mon, 8 Sep 2014 20:48:38 +0200 Subject: Import dgedit from drumgizmo repository (split into its own project). --- src/canvastoolselections.cc | 319 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 319 insertions(+) create mode 100644 src/canvastoolselections.cc (limited to 'src/canvastoolselections.cc') 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 +#include + +#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 ids = selections.ids(); + QVector::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 ids = selections.ids(); + QVector::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 ids = selections.ids(); + QVector::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 ids = selections_preview.ids(); + QVector::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(); +} -- cgit v1.2.3