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-rw-r--r--dgedit/canvastoolthreshold.cc120
1 files changed, 0 insertions, 120 deletions
diff --git a/dgedit/canvastoolthreshold.cc b/dgedit/canvastoolthreshold.cc
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--- a/dgedit/canvastoolthreshold.cc
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-/* -*- 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));
-}
-