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-rw-r--r--dgedit/canvastoolselections.cc319
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diff --git a/dgedit/canvastoolselections.cc b/dgedit/canvastoolselections.cc
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-/* -*- 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();
-}
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