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/****************************************************************************
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**
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** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the tools applications of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** No Commercial Usage
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** This file contains pre-release code and may not be distributed.
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** You may use this file in accordance with the terms and conditions
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** contained in the Technology Preview License Agreement accompanying
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** this package.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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**
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**
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "qtgradientstopswidget.h"
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#include "qtgradientstopsmodel.h"
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#include <QtCore/QMap>
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#include <QtGui/QImage>
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#include <QtGui/QPainter>
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#include <QtGui/QScrollBar>
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#include <QtGui/QMouseEvent>
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#include <QtGui/QRubberBand>
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#include <QtGui/QMenu>
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QT_BEGIN_NAMESPACE
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class QtGradientStopsWidgetPrivate
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{
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QtGradientStopsWidget *q_ptr;
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Q_DECLARE_PUBLIC(QtGradientStopsWidget)
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public:
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typedef QMap<qreal, QColor> PositionColorMap;
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typedef QMap<QtGradientStop *, qreal> StopPositionMap;
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void slotStopAdded(QtGradientStop *stop);
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void slotStopRemoved(QtGradientStop *stop);
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void slotStopMoved(QtGradientStop *stop, qreal newPos);
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void slotStopsSwapped(QtGradientStop *stop1, QtGradientStop *stop2);
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void slotStopChanged(QtGradientStop *stop, const QColor &newColor);
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void slotStopSelected(QtGradientStop *stop, bool selected);
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void slotCurrentStopChanged(QtGradientStop *stop);
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void slotNewStop();
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void slotDelete();
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void slotFlipAll();
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void slotSelectAll();
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void slotZoomIn();
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void slotZoomOut();
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void slotResetZoom();
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double fromViewport(int x) const;
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double toViewport(double x) const;
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QtGradientStop *stopAt(const QPoint &viewportPos) const;
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QList<QtGradientStop *> stopsAt(const QPoint &viewportPos) const;
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void setupMove(QtGradientStop *stop, int x);
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void ensureVisible(double x); // x = stop position
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void ensureVisible(QtGradientStop *stop);
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QtGradientStop *newStop(const QPoint &viewportPos);
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bool m_backgroundCheckered;
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QtGradientStopsModel *m_model;
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double m_handleSize;
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int m_scaleFactor;
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double m_zoom;
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#ifndef QT_NO_DRAGANDDROP
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QtGradientStop *m_dragStop;
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QtGradientStop *m_changedStop;
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QtGradientStop *m_clonedStop;
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QtGradientStopsModel *m_dragModel;
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QColor m_dragColor;
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void clearDrag();
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void removeClonedStop();
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void restoreChangedStop();
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void changeStop(qreal pos);
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void cloneStop(qreal pos);
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#endif
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QRubberBand *m_rubber;
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QPoint m_clickPos;
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QList<QtGradientStop *> m_stops;
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bool m_moving;
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int m_moveOffset;
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StopPositionMap m_moveStops;
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PositionColorMap m_moveOriginal;
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};
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double QtGradientStopsWidgetPrivate::fromViewport(int x) const
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{
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QSize size = q_ptr->viewport()->size();
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int w = size.width();
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int max = q_ptr->horizontalScrollBar()->maximum();
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int val = q_ptr->horizontalScrollBar()->value();
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return ((double)x * m_scaleFactor + w * val) / (w * (m_scaleFactor + max));
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}
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double QtGradientStopsWidgetPrivate::toViewport(double x) const
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{
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QSize size = q_ptr->viewport()->size();
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int w = size.width();
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int max = q_ptr->horizontalScrollBar()->maximum();
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int val = q_ptr->horizontalScrollBar()->value();
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return w * (x * (m_scaleFactor + max) - val) / m_scaleFactor;
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}
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QtGradientStop *QtGradientStopsWidgetPrivate::stopAt(const QPoint &viewportPos) const
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{
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double posY = m_handleSize / 2;
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QListIterator<QtGradientStop *> itStop(m_stops);
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while (itStop.hasNext()) {
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QtGradientStop *stop = itStop.next();
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double posX = toViewport(stop->position());
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double x = viewportPos.x() - posX;
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double y = viewportPos.y() - posY;
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if ((m_handleSize * m_handleSize / 4) > (x * x + y * y))
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return stop;
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}
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return 0;
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}
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QList<QtGradientStop *> QtGradientStopsWidgetPrivate::stopsAt(const QPoint &viewportPos) const
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{
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QList<QtGradientStop *> stops;
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double posY = m_handleSize / 2;
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QListIterator<QtGradientStop *> itStop(m_stops);
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while (itStop.hasNext()) {
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QtGradientStop *stop = itStop.next();
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double posX = toViewport(stop->position());
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double x = viewportPos.x() - posX;
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double y = viewportPos.y() - posY;
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if ((m_handleSize * m_handleSize / 4) > (x * x + y * y))
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stops.append(stop);
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}
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return stops;
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}
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void QtGradientStopsWidgetPrivate::setupMove(QtGradientStop *stop, int x)
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{
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m_model->setCurrentStop(stop);
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int viewportX = qRound(toViewport(stop->position()));
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m_moveOffset = x - viewportX;
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QList<QtGradientStop *> stops = m_stops;
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m_stops.clear();
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QListIterator<QtGradientStop *> itStop(stops);
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while (itStop.hasNext()) {
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QtGradientStop *s = itStop.next();
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if (m_model->isSelected(s) || s == stop) {
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m_moveStops[s] = s->position() - stop->position();
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m_stops.append(s);
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} else {
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m_moveOriginal[s->position()] = s->color();
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}
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}
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itStop.toFront();
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while (itStop.hasNext()) {
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QtGradientStop *s = itStop.next();
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if (!m_model->isSelected(s))
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m_stops.append(s);
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}
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m_stops.removeAll(stop);
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m_stops.prepend(stop);
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}
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void QtGradientStopsWidgetPrivate::ensureVisible(double x)
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{
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double viewX = toViewport(x);
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if (viewX < 0 || viewX > q_ptr->viewport()->size().width()) {
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int max = q_ptr->horizontalScrollBar()->maximum();
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int newVal = qRound(x * (max + m_scaleFactor) - m_scaleFactor / 2);
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q_ptr->horizontalScrollBar()->setValue(newVal);
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}
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}
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void QtGradientStopsWidgetPrivate::ensureVisible(QtGradientStop *stop)
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{
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if (!stop)
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return;
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ensureVisible(stop->position());
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}
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QtGradientStop *QtGradientStopsWidgetPrivate::newStop(const QPoint &viewportPos)
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{
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QtGradientStop *copyStop = stopAt(viewportPos);
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double posX = fromViewport(viewportPos.x());
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QtGradientStop *stop = m_model->at(posX);
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if (!stop) {
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QColor newColor;
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if (copyStop)
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newColor = copyStop->color();
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else
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newColor = m_model->color(posX);
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if (!newColor.isValid())
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newColor = Qt::white;
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stop = m_model->addStop(posX, newColor);
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}
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return stop;
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}
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void QtGradientStopsWidgetPrivate::slotStopAdded(QtGradientStop *stop)
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{
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m_stops.append(stop);
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q_ptr->viewport()->update();
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}
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void QtGradientStopsWidgetPrivate::slotStopRemoved(QtGradientStop *stop)
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{
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m_stops.removeAll(stop);
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q_ptr->viewport()->update();
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}
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void QtGradientStopsWidgetPrivate::slotStopMoved(QtGradientStop *stop, qreal newPos)
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{
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Q_UNUSED(stop)
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Q_UNUSED(newPos)
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q_ptr->viewport()->update();
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}
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void QtGradientStopsWidgetPrivate::slotStopsSwapped(QtGradientStop *stop1, QtGradientStop *stop2)
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{
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Q_UNUSED(stop1)
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Q_UNUSED(stop2)
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q_ptr->viewport()->update();
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}
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void QtGradientStopsWidgetPrivate::slotStopChanged(QtGradientStop *stop, const QColor &newColor)
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{
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Q_UNUSED(stop)
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Q_UNUSED(newColor)
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q_ptr->viewport()->update();
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}
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void QtGradientStopsWidgetPrivate::slotStopSelected(QtGradientStop *stop, bool selected)
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{
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Q_UNUSED(stop)
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Q_UNUSED(selected)
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q_ptr->viewport()->update();
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}
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void QtGradientStopsWidgetPrivate::slotCurrentStopChanged(QtGradientStop *stop)
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{
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Q_UNUSED(stop)
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if (!m_model)
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return;
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q_ptr->viewport()->update();
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if (stop) {
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m_stops.removeAll(stop);
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m_stops.prepend(stop);
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}
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}
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void QtGradientStopsWidgetPrivate::slotNewStop()
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{
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if (!m_model)
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return;
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QtGradientStop *stop = newStop(m_clickPos);
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if (!stop)
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return;
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m_model->clearSelection();
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m_model->selectStop(stop, true);
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m_model->setCurrentStop(stop);
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}
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void QtGradientStopsWidgetPrivate::slotDelete()
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{
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if (!m_model)
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return;
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m_model->deleteStops();
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}
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void QtGradientStopsWidgetPrivate::slotFlipAll()
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{
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if (!m_model)
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return;
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m_model->flipAll();
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}
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void QtGradientStopsWidgetPrivate::slotSelectAll()
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{
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if (!m_model)
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return;
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m_model->selectAll();
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}
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void QtGradientStopsWidgetPrivate::slotZoomIn()
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{
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double newZoom = q_ptr->zoom() * 2;
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if (newZoom > 100)
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newZoom = 100;
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if (newZoom == q_ptr->zoom())
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return;
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q_ptr->setZoom(newZoom);
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emit q_ptr->zoomChanged(q_ptr->zoom());
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}
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void QtGradientStopsWidgetPrivate::slotZoomOut()
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{
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double newZoom = q_ptr->zoom() / 2;
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if (newZoom < 1)
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newZoom = 1;
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if (newZoom == q_ptr->zoom())
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return;
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q_ptr->setZoom(newZoom);
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emit q_ptr->zoomChanged(q_ptr->zoom());
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}
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void QtGradientStopsWidgetPrivate::slotResetZoom()
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{
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if (1 == q_ptr->zoom())
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return;
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q_ptr->setZoom(1);
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emit q_ptr->zoomChanged(1);
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}
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QtGradientStopsWidget::QtGradientStopsWidget(QWidget *parent)
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: QAbstractScrollArea(parent), d_ptr(new QtGradientStopsWidgetPrivate)
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{
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d_ptr->q_ptr = this;
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d_ptr->m_backgroundCheckered = true;
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d_ptr->m_model = 0;
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d_ptr->m_handleSize = 25.0;
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d_ptr->m_scaleFactor = 1000;
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d_ptr->m_moving = false;
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d_ptr->m_zoom = 1;
|
|
|
372 |
d_ptr->m_rubber = new QRubberBand(QRubberBand::Rectangle, this);
|
|
|
373 |
#ifndef QT_NO_DRAGANDDROP
|
|
|
374 |
d_ptr->m_dragStop = 0;
|
|
|
375 |
d_ptr->m_changedStop = 0;
|
|
|
376 |
d_ptr->m_clonedStop = 0;
|
|
|
377 |
d_ptr->m_dragModel = 0;
|
|
|
378 |
#endif
|
|
|
379 |
setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
|
|
|
380 |
setHorizontalScrollBarPolicy(Qt::ScrollBarAsNeeded);
|
|
|
381 |
horizontalScrollBar()->setRange(0, (int)(d_ptr->m_scaleFactor * (d_ptr->m_zoom - 1) + 0.5));
|
|
|
382 |
horizontalScrollBar()->setPageStep(d_ptr->m_scaleFactor);
|
|
|
383 |
horizontalScrollBar()->setSingleStep(4);
|
|
|
384 |
viewport()->setAutoFillBackground(false);
|
|
|
385 |
|
|
|
386 |
setAcceptDrops(true);
|
|
|
387 |
|
|
|
388 |
setSizePolicy(QSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred));
|
|
|
389 |
}
|
|
|
390 |
|
|
|
391 |
QtGradientStopsWidget::~QtGradientStopsWidget()
|
|
|
392 |
{
|
|
|
393 |
}
|
|
|
394 |
|
|
|
395 |
QSize QtGradientStopsWidget::sizeHint() const
|
|
|
396 |
{
|
|
|
397 |
return QSize(qRound(2 * d_ptr->m_handleSize), qRound(3 * d_ptr->m_handleSize) + horizontalScrollBar()->sizeHint().height());
|
|
|
398 |
}
|
|
|
399 |
|
|
|
400 |
QSize QtGradientStopsWidget::minimumSizeHint() const
|
|
|
401 |
{
|
|
|
402 |
return QSize(qRound(2 * d_ptr->m_handleSize), qRound(3 * d_ptr->m_handleSize) + horizontalScrollBar()->minimumSizeHint().height());
|
|
|
403 |
}
|
|
|
404 |
|
|
|
405 |
void QtGradientStopsWidget::setBackgroundCheckered(bool checkered)
|
|
|
406 |
{
|
|
|
407 |
if (d_ptr->m_backgroundCheckered == checkered)
|
|
|
408 |
return;
|
|
|
409 |
d_ptr->m_backgroundCheckered = checkered;
|
|
|
410 |
update();
|
|
|
411 |
}
|
|
|
412 |
|
|
|
413 |
bool QtGradientStopsWidget::isBackgroundCheckered() const
|
|
|
414 |
{
|
|
|
415 |
return d_ptr->m_backgroundCheckered;
|
|
|
416 |
}
|
|
|
417 |
|
|
|
418 |
void QtGradientStopsWidget::setGradientStopsModel(QtGradientStopsModel *model)
|
|
|
419 |
{
|
|
|
420 |
if (d_ptr->m_model == model)
|
|
|
421 |
return;
|
|
|
422 |
|
|
|
423 |
if (d_ptr->m_model) {
|
|
|
424 |
disconnect(d_ptr->m_model, SIGNAL(stopAdded(QtGradientStop *)),
|
|
|
425 |
this, SLOT(slotStopAdded(QtGradientStop *)));
|
|
|
426 |
disconnect(d_ptr->m_model, SIGNAL(stopRemoved(QtGradientStop *)),
|
|
|
427 |
this, SLOT(slotStopRemoved(QtGradientStop *)));
|
|
|
428 |
disconnect(d_ptr->m_model, SIGNAL(stopMoved(QtGradientStop *, qreal)),
|
|
|
429 |
this, SLOT(slotStopMoved(QtGradientStop *, qreal)));
|
|
|
430 |
disconnect(d_ptr->m_model, SIGNAL(stopsSwapped(QtGradientStop *, QtGradientStop *)),
|
|
|
431 |
this, SLOT(slotStopsSwapped(QtGradientStop *, QtGradientStop *)));
|
|
|
432 |
disconnect(d_ptr->m_model, SIGNAL(stopChanged(QtGradientStop *, const QColor &)),
|
|
|
433 |
this, SLOT(slotStopChanged(QtGradientStop *, const QColor &)));
|
|
|
434 |
disconnect(d_ptr->m_model, SIGNAL(stopSelected(QtGradientStop *, bool)),
|
|
|
435 |
this, SLOT(slotStopSelected(QtGradientStop *, bool)));
|
|
|
436 |
disconnect(d_ptr->m_model, SIGNAL(currentStopChanged(QtGradientStop *)),
|
|
|
437 |
this, SLOT(slotCurrentStopChanged(QtGradientStop *)));
|
|
|
438 |
|
|
|
439 |
d_ptr->m_stops.clear();
|
|
|
440 |
}
|
|
|
441 |
|
|
|
442 |
d_ptr->m_model = model;
|
|
|
443 |
|
|
|
444 |
if (d_ptr->m_model) {
|
|
|
445 |
connect(d_ptr->m_model, SIGNAL(stopAdded(QtGradientStop *)),
|
|
|
446 |
this, SLOT(slotStopAdded(QtGradientStop *)));
|
|
|
447 |
connect(d_ptr->m_model, SIGNAL(stopRemoved(QtGradientStop *)),
|
|
|
448 |
this, SLOT(slotStopRemoved(QtGradientStop *)));
|
|
|
449 |
connect(d_ptr->m_model, SIGNAL(stopMoved(QtGradientStop *, qreal)),
|
|
|
450 |
this, SLOT(slotStopMoved(QtGradientStop *, qreal)));
|
|
|
451 |
connect(d_ptr->m_model, SIGNAL(stopsSwapped(QtGradientStop *, QtGradientStop *)),
|
|
|
452 |
this, SLOT(slotStopsSwapped(QtGradientStop *, QtGradientStop *)));
|
|
|
453 |
connect(d_ptr->m_model, SIGNAL(stopChanged(QtGradientStop *, const QColor &)),
|
|
|
454 |
this, SLOT(slotStopChanged(QtGradientStop *, const QColor &)));
|
|
|
455 |
connect(d_ptr->m_model, SIGNAL(stopSelected(QtGradientStop *, bool)),
|
|
|
456 |
this, SLOT(slotStopSelected(QtGradientStop *, bool)));
|
|
|
457 |
connect(d_ptr->m_model, SIGNAL(currentStopChanged(QtGradientStop *)),
|
|
|
458 |
this, SLOT(slotCurrentStopChanged(QtGradientStop *)));
|
|
|
459 |
|
|
|
460 |
QList<QtGradientStop *> stops = d_ptr->m_model->stops().values();
|
|
|
461 |
QListIterator<QtGradientStop *> itStop(stops);
|
|
|
462 |
while (itStop.hasNext())
|
|
|
463 |
d_ptr->slotStopAdded(itStop.next());
|
|
|
464 |
|
|
|
465 |
QList<QtGradientStop *> selected = d_ptr->m_model->selectedStops();
|
|
|
466 |
QListIterator<QtGradientStop *> itSelect(selected);
|
|
|
467 |
while (itSelect.hasNext())
|
|
|
468 |
d_ptr->slotStopSelected(itSelect.next(), true);
|
|
|
469 |
|
|
|
470 |
d_ptr->slotCurrentStopChanged(d_ptr->m_model->currentStop());
|
|
|
471 |
}
|
|
|
472 |
}
|
|
|
473 |
|
|
|
474 |
void QtGradientStopsWidget::mousePressEvent(QMouseEvent *e)
|
|
|
475 |
{
|
|
|
476 |
typedef QtGradientStopsModel::PositionStopMap PositionStopMap;
|
|
|
477 |
if (!d_ptr->m_model)
|
|
|
478 |
return;
|
|
|
479 |
|
|
|
480 |
if (e->button() != Qt::LeftButton)
|
|
|
481 |
return;
|
|
|
482 |
|
|
|
483 |
d_ptr->m_moving = true;
|
|
|
484 |
|
|
|
485 |
d_ptr->m_moveStops.clear();
|
|
|
486 |
d_ptr->m_moveOriginal.clear();
|
|
|
487 |
d_ptr->m_clickPos = e->pos();
|
|
|
488 |
QtGradientStop *stop = d_ptr->stopAt(e->pos());
|
|
|
489 |
if (stop) {
|
|
|
490 |
if (e->modifiers() & Qt::ControlModifier) {
|
|
|
491 |
d_ptr->m_model->selectStop(stop, !d_ptr->m_model->isSelected(stop));
|
|
|
492 |
} else if (e->modifiers() & Qt::ShiftModifier) {
|
|
|
493 |
QtGradientStop *oldCurrent = d_ptr->m_model->currentStop();
|
|
|
494 |
if (oldCurrent) {
|
|
|
495 |
PositionStopMap stops = d_ptr->m_model->stops();
|
|
|
496 |
PositionStopMap::ConstIterator itSt = stops.constFind(oldCurrent->position());
|
|
|
497 |
if (itSt != stops.constEnd()) {
|
|
|
498 |
while (itSt != stops.constFind(stop->position())) {
|
|
|
499 |
d_ptr->m_model->selectStop(itSt.value(), true);
|
|
|
500 |
if (oldCurrent->position() < stop->position())
|
|
|
501 |
++itSt;
|
|
|
502 |
else
|
|
|
503 |
--itSt;
|
|
|
504 |
}
|
|
|
505 |
}
|
|
|
506 |
}
|
|
|
507 |
d_ptr->m_model->selectStop(stop, true);
|
|
|
508 |
} else {
|
|
|
509 |
if (!d_ptr->m_model->isSelected(stop)) {
|
|
|
510 |
d_ptr->m_model->clearSelection();
|
|
|
511 |
d_ptr->m_model->selectStop(stop, true);
|
|
|
512 |
}
|
|
|
513 |
}
|
|
|
514 |
d_ptr->setupMove(stop, e->pos().x());
|
|
|
515 |
} else {
|
|
|
516 |
d_ptr->m_model->clearSelection();
|
|
|
517 |
d_ptr->m_rubber->setGeometry(QRect(d_ptr->m_clickPos, QSize()));
|
|
|
518 |
d_ptr->m_rubber->show();
|
|
|
519 |
}
|
|
|
520 |
viewport()->update();
|
|
|
521 |
}
|
|
|
522 |
|
|
|
523 |
void QtGradientStopsWidget::mouseReleaseEvent(QMouseEvent *e)
|
|
|
524 |
{
|
|
|
525 |
if (!d_ptr->m_model)
|
|
|
526 |
return;
|
|
|
527 |
|
|
|
528 |
if (e->button() != Qt::LeftButton)
|
|
|
529 |
return;
|
|
|
530 |
|
|
|
531 |
d_ptr->m_moving = false;
|
|
|
532 |
d_ptr->m_rubber->hide();
|
|
|
533 |
d_ptr->m_moveStops.clear();
|
|
|
534 |
d_ptr->m_moveOriginal.clear();
|
|
|
535 |
}
|
|
|
536 |
|
|
|
537 |
void QtGradientStopsWidget::mouseMoveEvent(QMouseEvent *e)
|
|
|
538 |
{
|
|
|
539 |
typedef QtGradientStopsWidgetPrivate::PositionColorMap PositionColorMap;
|
|
|
540 |
typedef QtGradientStopsModel::PositionStopMap PositionStopMap;
|
|
|
541 |
typedef QtGradientStopsWidgetPrivate::StopPositionMap StopPositionMap;
|
|
|
542 |
if (!d_ptr->m_model)
|
|
|
543 |
return;
|
|
|
544 |
|
|
|
545 |
if (!(e->buttons() & Qt::LeftButton))
|
|
|
546 |
return;
|
|
|
547 |
|
|
|
548 |
if (!d_ptr->m_moving)
|
|
|
549 |
return;
|
|
|
550 |
|
|
|
551 |
if (!d_ptr->m_moveStops.isEmpty()) {
|
|
|
552 |
double maxOffset = 0.0;
|
|
|
553 |
double minOffset = 0.0;
|
|
|
554 |
bool first = true;
|
|
|
555 |
StopPositionMap::ConstIterator itStop = d_ptr->m_moveStops.constBegin();
|
|
|
556 |
while (itStop != d_ptr->m_moveStops.constEnd()) {
|
|
|
557 |
double offset = itStop.value();
|
|
|
558 |
|
|
|
559 |
if (first) {
|
|
|
560 |
maxOffset = offset;
|
|
|
561 |
minOffset = offset;
|
|
|
562 |
first = false;
|
|
|
563 |
} else {
|
|
|
564 |
if (maxOffset < offset)
|
|
|
565 |
maxOffset = offset;
|
|
|
566 |
else if (minOffset > offset)
|
|
|
567 |
minOffset = offset;
|
|
|
568 |
}
|
|
|
569 |
++itStop;
|
|
|
570 |
}
|
|
|
571 |
|
|
|
572 |
double viewportMin = d_ptr->toViewport(-minOffset);
|
|
|
573 |
double viewportMax = d_ptr->toViewport(1.0 - maxOffset);
|
|
|
574 |
|
|
|
575 |
PositionStopMap newPositions;
|
|
|
576 |
|
|
|
577 |
int viewportX = e->pos().x() - d_ptr->m_moveOffset;
|
|
|
578 |
|
|
|
579 |
if (viewportX > viewport()->size().width())
|
|
|
580 |
viewportX = viewport()->size().width();
|
|
|
581 |
else if (viewportX < 0)
|
|
|
582 |
viewportX = 0;
|
|
|
583 |
|
|
|
584 |
double posX = d_ptr->fromViewport(viewportX);
|
|
|
585 |
|
|
|
586 |
if (viewportX > viewportMax)
|
|
|
587 |
posX = 1.0 - maxOffset;
|
|
|
588 |
else if (viewportX < viewportMin)
|
|
|
589 |
posX = -minOffset;
|
|
|
590 |
|
|
|
591 |
itStop = d_ptr->m_moveStops.constBegin();
|
|
|
592 |
while (itStop != d_ptr->m_moveStops.constEnd()) {
|
|
|
593 |
QtGradientStop *stop = itStop.key();
|
|
|
594 |
|
|
|
595 |
newPositions[posX + itStop.value()] = stop;
|
|
|
596 |
|
|
|
597 |
++itStop;
|
|
|
598 |
}
|
|
|
599 |
|
|
|
600 |
bool forward = true;
|
|
|
601 |
PositionStopMap::ConstIterator itNewPos = newPositions.constBegin();
|
|
|
602 |
if (itNewPos.value()->position() < itNewPos.key())
|
|
|
603 |
forward = false;
|
|
|
604 |
|
|
|
605 |
itNewPos = forward ? newPositions.constBegin() : newPositions.constEnd();
|
|
|
606 |
while (itNewPos != (forward ? newPositions.constEnd() : newPositions.constBegin())) {
|
|
|
607 |
if (!forward)
|
|
|
608 |
--itNewPos;
|
|
|
609 |
QtGradientStop *stop = itNewPos.value();
|
|
|
610 |
double newPos = itNewPos.key();
|
|
|
611 |
if (newPos > 1)
|
|
|
612 |
newPos = 1;
|
|
|
613 |
else if (newPos < 0)
|
|
|
614 |
newPos = 0;
|
|
|
615 |
|
|
|
616 |
QtGradientStop *existingStop = d_ptr->m_model->at(newPos);
|
|
|
617 |
if (existingStop && !d_ptr->m_moveStops.contains(existingStop))
|
|
|
618 |
d_ptr->m_model->removeStop(existingStop);
|
|
|
619 |
d_ptr->m_model->moveStop(stop, newPos);
|
|
|
620 |
|
|
|
621 |
if (forward)
|
|
|
622 |
++itNewPos;
|
|
|
623 |
}
|
|
|
624 |
|
|
|
625 |
PositionColorMap::ConstIterator itOld = d_ptr->m_moveOriginal.constBegin();
|
|
|
626 |
while (itOld != d_ptr->m_moveOriginal.constEnd()) {
|
|
|
627 |
double position = itOld.key();
|
|
|
628 |
if (!d_ptr->m_model->at(position))
|
|
|
629 |
d_ptr->m_model->addStop(position, itOld.value());
|
|
|
630 |
|
|
|
631 |
++itOld;
|
|
|
632 |
}
|
|
|
633 |
|
|
|
634 |
} else {
|
|
|
635 |
QRect r(QRect(d_ptr->m_clickPos, e->pos()).normalized());
|
|
|
636 |
r.translate(1, 0);
|
|
|
637 |
d_ptr->m_rubber->setGeometry(r);
|
|
|
638 |
//d_ptr->m_model->clearSelection();
|
|
|
639 |
|
|
|
640 |
int xv1 = d_ptr->m_clickPos.x();
|
|
|
641 |
int xv2 = e->pos().x();
|
|
|
642 |
if (xv1 > xv2) {
|
|
|
643 |
int temp = xv1;
|
|
|
644 |
xv1 = xv2;
|
|
|
645 |
xv2 = temp;
|
|
|
646 |
}
|
|
|
647 |
int yv1 = d_ptr->m_clickPos.y();
|
|
|
648 |
int yv2 = e->pos().y();
|
|
|
649 |
if (yv1 > yv2) {
|
|
|
650 |
int temp = yv1;
|
|
|
651 |
yv1 = yv2;
|
|
|
652 |
yv2 = temp;
|
|
|
653 |
}
|
|
|
654 |
|
|
|
655 |
QPoint p1, p2;
|
|
|
656 |
|
|
|
657 |
if (yv2 < d_ptr->m_handleSize / 2) {
|
|
|
658 |
p1 = QPoint(xv1, yv2);
|
|
|
659 |
p2 = QPoint(xv2, yv2);
|
|
|
660 |
} else if (yv1 > d_ptr->m_handleSize / 2) {
|
|
|
661 |
p1 = QPoint(xv1, yv1);
|
|
|
662 |
p2 = QPoint(xv2, yv1);
|
|
|
663 |
} else {
|
|
|
664 |
p1 = QPoint(xv1, qRound(d_ptr->m_handleSize / 2));
|
|
|
665 |
p2 = QPoint(xv2, qRound(d_ptr->m_handleSize / 2));
|
|
|
666 |
}
|
|
|
667 |
|
|
|
668 |
QList<QtGradientStop *> beginList = d_ptr->stopsAt(p1);
|
|
|
669 |
QList<QtGradientStop *> endList = d_ptr->stopsAt(p2);
|
|
|
670 |
|
|
|
671 |
double x1 = d_ptr->fromViewport(xv1);
|
|
|
672 |
double x2 = d_ptr->fromViewport(xv2);
|
|
|
673 |
|
|
|
674 |
QListIterator<QtGradientStop *> itStop(d_ptr->m_stops);
|
|
|
675 |
while (itStop.hasNext()) {
|
|
|
676 |
QtGradientStop *stop = itStop.next();
|
|
|
677 |
if ((stop->position() >= x1 && stop->position() <= x2) ||
|
|
|
678 |
beginList.contains(stop) || endList.contains(stop))
|
|
|
679 |
d_ptr->m_model->selectStop(stop, true);
|
|
|
680 |
else
|
|
|
681 |
d_ptr->m_model->selectStop(stop, false);
|
|
|
682 |
}
|
|
|
683 |
}
|
|
|
684 |
}
|
|
|
685 |
|
|
|
686 |
void QtGradientStopsWidget::mouseDoubleClickEvent(QMouseEvent *e)
|
|
|
687 |
{
|
|
|
688 |
if (!d_ptr->m_model)
|
|
|
689 |
return;
|
|
|
690 |
|
|
|
691 |
if (e->button() != Qt::LeftButton)
|
|
|
692 |
return;
|
|
|
693 |
|
|
|
694 |
if (d_ptr->m_clickPos != e->pos()) {
|
|
|
695 |
mousePressEvent(e);
|
|
|
696 |
return;
|
|
|
697 |
}
|
|
|
698 |
d_ptr->m_moving = true;
|
|
|
699 |
d_ptr->m_moveStops.clear();
|
|
|
700 |
d_ptr->m_moveOriginal.clear();
|
|
|
701 |
|
|
|
702 |
QtGradientStop *stop = d_ptr->newStop(e->pos());
|
|
|
703 |
|
|
|
704 |
if (!stop)
|
|
|
705 |
return;
|
|
|
706 |
|
|
|
707 |
d_ptr->m_model->clearSelection();
|
|
|
708 |
d_ptr->m_model->selectStop(stop, true);
|
|
|
709 |
|
|
|
710 |
d_ptr->setupMove(stop, e->pos().x());
|
|
|
711 |
|
|
|
712 |
viewport()->update();
|
|
|
713 |
}
|
|
|
714 |
|
|
|
715 |
void QtGradientStopsWidget::keyPressEvent(QKeyEvent *e)
|
|
|
716 |
{
|
|
|
717 |
typedef QtGradientStopsModel::PositionStopMap PositionStopMap;
|
|
|
718 |
if (!d_ptr->m_model)
|
|
|
719 |
return;
|
|
|
720 |
|
|
|
721 |
if (e->key() == Qt::Key_Delete || e->key() == Qt::Key_Backspace) {
|
|
|
722 |
d_ptr->m_model->deleteStops();
|
|
|
723 |
} else if (e->key() == Qt::Key_Left || e->key() == Qt::Key_Right ||
|
|
|
724 |
e->key() == Qt::Key_Home || e->key() == Qt::Key_End) {
|
|
|
725 |
PositionStopMap stops = d_ptr->m_model->stops();
|
|
|
726 |
if (stops.isEmpty())
|
|
|
727 |
return;
|
|
|
728 |
QtGradientStop *newCurrent = 0;
|
|
|
729 |
QtGradientStop *current = d_ptr->m_model->currentStop();
|
|
|
730 |
if (!current || e->key() == Qt::Key_Home || e->key() == Qt::Key_End) {
|
|
|
731 |
if (e->key() == Qt::Key_Left || e->key() == Qt::Key_Home)
|
|
|
732 |
newCurrent = stops.constBegin().value();
|
|
|
733 |
else if (e->key() == Qt::Key_Right || e->key() == Qt::Key_End)
|
|
|
734 |
newCurrent = (--stops.constEnd()).value();
|
|
|
735 |
} else {
|
|
|
736 |
PositionStopMap::ConstIterator itStop = stops.constBegin();
|
|
|
737 |
while (itStop.value() != current)
|
|
|
738 |
++itStop;
|
|
|
739 |
if (e->key() == Qt::Key_Left && itStop != stops.constBegin())
|
|
|
740 |
--itStop;
|
|
|
741 |
else if (e->key() == Qt::Key_Right && itStop != --stops.constEnd())
|
|
|
742 |
++itStop;
|
|
|
743 |
newCurrent = itStop.value();
|
|
|
744 |
}
|
|
|
745 |
d_ptr->m_model->clearSelection();
|
|
|
746 |
d_ptr->m_model->selectStop(newCurrent, true);
|
|
|
747 |
d_ptr->m_model->setCurrentStop(newCurrent);
|
|
|
748 |
d_ptr->ensureVisible(newCurrent);
|
|
|
749 |
} else if (e->key() == Qt::Key_A) {
|
|
|
750 |
if (e->modifiers() & Qt::ControlModifier)
|
|
|
751 |
d_ptr->m_model->selectAll();
|
|
|
752 |
}
|
|
|
753 |
}
|
|
|
754 |
|
|
|
755 |
void QtGradientStopsWidget::paintEvent(QPaintEvent *e)
|
|
|
756 |
{
|
|
|
757 |
Q_UNUSED(e)
|
|
|
758 |
if (!d_ptr->m_model)
|
|
|
759 |
return;
|
|
|
760 |
|
|
|
761 |
QtGradientStopsModel *model = d_ptr->m_model;
|
|
|
762 |
#ifndef QT_NO_DRAGANDDROP
|
|
|
763 |
if (d_ptr->m_dragModel)
|
|
|
764 |
model = d_ptr->m_dragModel;
|
|
|
765 |
#endif
|
|
|
766 |
|
|
|
767 |
QSize size = viewport()->size();
|
|
|
768 |
int w = size.width();
|
|
|
769 |
double h = size.height() - d_ptr->m_handleSize;
|
|
|
770 |
if (w <= 0)
|
|
|
771 |
return;
|
|
|
772 |
|
|
|
773 |
QPixmap pix(size);
|
|
|
774 |
QPainter p;
|
|
|
775 |
|
|
|
776 |
if (d_ptr->m_backgroundCheckered) {
|
|
|
777 |
int pixSize = 20;
|
|
|
778 |
QPixmap pm(2 * pixSize, 2 * pixSize);
|
|
|
779 |
QPainter pmp(&pm);
|
|
|
780 |
pmp.fillRect(0, 0, pixSize, pixSize, Qt::white);
|
|
|
781 |
pmp.fillRect(pixSize, pixSize, pixSize, pixSize, Qt::white);
|
|
|
782 |
pmp.fillRect(0, pixSize, pixSize, pixSize, Qt::black);
|
|
|
783 |
pmp.fillRect(pixSize, 0, pixSize, pixSize, Qt::black);
|
|
|
784 |
|
|
|
785 |
p.begin(&pix);
|
|
|
786 |
p.setBrushOrigin((size.width() % pixSize + pixSize) / 2, (size.height() % pixSize + pixSize) / 2);
|
|
|
787 |
p.fillRect(viewport()->rect(), pm);
|
|
|
788 |
p.setBrushOrigin(0, 0);
|
|
|
789 |
} else {
|
|
|
790 |
p.begin(viewport());
|
|
|
791 |
}
|
|
|
792 |
|
|
|
793 |
double viewBegin = (double)w * horizontalScrollBar()->value() / d_ptr->m_scaleFactor;
|
|
|
794 |
|
|
|
795 |
int val = horizontalScrollBar()->value();
|
|
|
796 |
int max = horizontalScrollBar()->maximum();
|
|
|
797 |
|
|
|
798 |
double begin = (double)val / (d_ptr->m_scaleFactor + max);
|
|
|
799 |
double end = (double)(val + d_ptr->m_scaleFactor) / (d_ptr->m_scaleFactor + max);
|
|
|
800 |
double width = end - begin;
|
|
|
801 |
|
|
|
802 |
if (h > 0) {
|
|
|
803 |
QLinearGradient lg(0, 0, w, 0);
|
|
|
804 |
QMap<qreal, QtGradientStop *> stops = model->stops();
|
|
|
805 |
QMapIterator<qreal, QtGradientStop *> itStop(stops);
|
|
|
806 |
while (itStop.hasNext()) {
|
|
|
807 |
QtGradientStop *stop = itStop.next().value();
|
|
|
808 |
double pos = stop->position();
|
|
|
809 |
if (pos >= begin && pos <= end) {
|
|
|
810 |
double gradPos = (pos - begin) / width;
|
|
|
811 |
QColor c = stop->color();
|
|
|
812 |
lg.setColorAt(gradPos, c);
|
|
|
813 |
}
|
|
|
814 |
//lg.setColorAt(stop->position(), stop->color());
|
|
|
815 |
}
|
|
|
816 |
lg.setColorAt(0, model->color(begin));
|
|
|
817 |
lg.setColorAt(1, model->color(end));
|
|
|
818 |
QImage img(w, 1, QImage::Format_ARGB32_Premultiplied);
|
|
|
819 |
QPainter p1(&img);
|
|
|
820 |
p1.setCompositionMode(QPainter::CompositionMode_Source);
|
|
|
821 |
|
|
|
822 |
/*
|
|
|
823 |
if (viewBegin != 0)
|
|
|
824 |
p1.translate(-viewBegin, 0);
|
|
|
825 |
if (d_ptr->m_zoom != 1)
|
|
|
826 |
p1.scale(d_ptr->m_zoom, 1);
|
|
|
827 |
*/
|
|
|
828 |
p1.fillRect(0, 0, w, 1, lg);
|
|
|
829 |
|
|
|
830 |
p.fillRect(QRectF(0, d_ptr->m_handleSize, w, h), QPixmap::fromImage(img));
|
|
|
831 |
}
|
|
|
832 |
|
|
|
833 |
|
|
|
834 |
double handleWidth = d_ptr->m_handleSize * d_ptr->m_scaleFactor / (w * (d_ptr->m_scaleFactor + max));
|
|
|
835 |
|
|
|
836 |
QColor insideColor = QColor::fromRgb(0x20, 0x20, 0x20, 0xFF);
|
|
|
837 |
QColor borderColor = QColor(Qt::white);
|
|
|
838 |
QColor drawColor;
|
|
|
839 |
QColor back1 = QColor(Qt::lightGray);
|
|
|
840 |
QColor back2 = QColor(Qt::darkGray);
|
|
|
841 |
QColor back = QColor::fromRgb((back1.red() + back2.red()) / 2,
|
|
|
842 |
(back1.green() + back2.green()) / 2,
|
|
|
843 |
(back1.blue() + back2.blue()) / 2);
|
|
|
844 |
|
|
|
845 |
QPen pen;
|
|
|
846 |
p.setRenderHint(QPainter::Antialiasing);
|
|
|
847 |
QListIterator<QtGradientStop *> itStop(d_ptr->m_stops);
|
|
|
848 |
itStop.toBack();
|
|
|
849 |
while (itStop.hasPrevious()) {
|
|
|
850 |
QtGradientStop *stop = itStop.previous();
|
|
|
851 |
double x = stop->position();
|
|
|
852 |
if (x >= begin - handleWidth / 2 && x <= end + handleWidth / 2) {
|
|
|
853 |
double viewX = x * w * (d_ptr->m_scaleFactor + max) / d_ptr->m_scaleFactor - viewBegin;
|
|
|
854 |
p.save();
|
|
|
855 |
QColor c = stop->color();
|
|
|
856 |
#ifndef QT_NO_DRAGANDDROP
|
|
|
857 |
if (stop == d_ptr->m_dragStop)
|
|
|
858 |
c = d_ptr->m_dragColor;
|
|
|
859 |
#endif
|
|
|
860 |
if ((0.3 * c.redF() + 0.59 * c.greenF() + 0.11 * c.blueF()) * c.alphaF() +
|
|
|
861 |
(0.3 * back.redF() + 0.59 * back.greenF() + 0.11 * back.blueF()) * (1.0 - c.alphaF()) < 0.5) {
|
|
|
862 |
drawColor = QColor::fromRgb(0xC0, 0xC0, 0xC0, 0xB0);
|
|
|
863 |
} else {
|
|
|
864 |
drawColor = QColor::fromRgb(0x40, 0x40, 0x40, 0x80);
|
|
|
865 |
}
|
|
|
866 |
QRectF rect(viewX - d_ptr->m_handleSize / 2, 0, d_ptr->m_handleSize, d_ptr->m_handleSize);
|
|
|
867 |
rect.adjust(0.5, 0.5, -0.5, -0.5);
|
|
|
868 |
if (h > 0) {
|
|
|
869 |
pen.setWidthF(1);
|
|
|
870 |
QLinearGradient lg(0, d_ptr->m_handleSize, 0, d_ptr->m_handleSize + h / 2);
|
|
|
871 |
lg.setColorAt(0, drawColor);
|
|
|
872 |
QColor alphaZero = drawColor;
|
|
|
873 |
alphaZero.setAlpha(0);
|
|
|
874 |
lg.setColorAt(1, alphaZero);
|
|
|
875 |
pen.setBrush(lg);
|
|
|
876 |
p.setPen(pen);
|
|
|
877 |
p.drawLine(QPointF(viewX, d_ptr->m_handleSize), QPointF(viewX, d_ptr->m_handleSize + h / 2));
|
|
|
878 |
|
|
|
879 |
pen.setWidthF(1);
|
|
|
880 |
pen.setBrush(drawColor);
|
|
|
881 |
p.setPen(pen);
|
|
|
882 |
QRectF r1 = rect.adjusted(0.5, 0.5, -0.5, -0.5);
|
|
|
883 |
QRectF r2 = rect.adjusted(1.5, 1.5, -1.5, -1.5);
|
|
|
884 |
QColor inColor = QColor::fromRgb(0x80, 0x80, 0x80, 0x80);
|
|
|
885 |
if (!d_ptr->m_model->isSelected(stop)) {
|
|
|
886 |
p.setBrush(c);
|
|
|
887 |
p.drawEllipse(rect);
|
|
|
888 |
} else {
|
|
|
889 |
pen.setBrush(insideColor);
|
|
|
890 |
pen.setWidthF(2);
|
|
|
891 |
p.setPen(pen);
|
|
|
892 |
p.setBrush(Qt::NoBrush);
|
|
|
893 |
p.drawEllipse(r1);
|
|
|
894 |
|
|
|
895 |
pen.setBrush(inColor);
|
|
|
896 |
pen.setWidthF(1);
|
|
|
897 |
p.setPen(pen);
|
|
|
898 |
p.setBrush(c);
|
|
|
899 |
p.drawEllipse(r2);
|
|
|
900 |
}
|
|
|
901 |
|
|
|
902 |
if (d_ptr->m_model->currentStop() == stop) {
|
|
|
903 |
p.setBrush(Qt::NoBrush);
|
|
|
904 |
pen.setWidthF(5);
|
|
|
905 |
pen.setBrush(drawColor);
|
|
|
906 |
int corr = 4;
|
|
|
907 |
if (!d_ptr->m_model->isSelected(stop)) {
|
|
|
908 |
corr = 3;
|
|
|
909 |
pen.setWidthF(7);
|
|
|
910 |
}
|
|
|
911 |
p.setPen(pen);
|
|
|
912 |
p.drawEllipse(rect.adjusted(corr, corr, -corr, -corr));
|
|
|
913 |
}
|
|
|
914 |
|
|
|
915 |
}
|
|
|
916 |
p.restore();
|
|
|
917 |
}
|
|
|
918 |
}
|
|
|
919 |
if (d_ptr->m_backgroundCheckered) {
|
|
|
920 |
p.end();
|
|
|
921 |
p.begin(viewport());
|
|
|
922 |
p.drawPixmap(0, 0, pix);
|
|
|
923 |
}
|
|
|
924 |
p.end();
|
|
|
925 |
}
|
|
|
926 |
|
|
|
927 |
void QtGradientStopsWidget::focusInEvent(QFocusEvent *e)
|
|
|
928 |
{
|
|
|
929 |
Q_UNUSED(e)
|
|
|
930 |
viewport()->update();
|
|
|
931 |
}
|
|
|
932 |
|
|
|
933 |
void QtGradientStopsWidget::focusOutEvent(QFocusEvent *e)
|
|
|
934 |
{
|
|
|
935 |
Q_UNUSED(e)
|
|
|
936 |
viewport()->update();
|
|
|
937 |
}
|
|
|
938 |
|
|
|
939 |
void QtGradientStopsWidget::contextMenuEvent(QContextMenuEvent *e)
|
|
|
940 |
{
|
|
|
941 |
if (!d_ptr->m_model)
|
|
|
942 |
return;
|
|
|
943 |
|
|
|
944 |
d_ptr->m_clickPos = e->pos();
|
|
|
945 |
|
|
|
946 |
QMenu menu(this);
|
|
|
947 |
QAction *newStopAction = new QAction(tr("New Stop"), &menu);
|
|
|
948 |
QAction *deleteAction = new QAction(tr("Delete"), &menu);
|
|
|
949 |
QAction *flipAllAction = new QAction(tr("Flip All"), &menu);
|
|
|
950 |
QAction *selectAllAction = new QAction(tr("Select All"), &menu);
|
|
|
951 |
QAction *zoomInAction = new QAction(tr("Zoom In"), &menu);
|
|
|
952 |
QAction *zoomOutAction = new QAction(tr("Zoom Out"), &menu);
|
|
|
953 |
QAction *zoomAllAction = new QAction(tr("Reset Zoom"), &menu);
|
|
|
954 |
if (d_ptr->m_model->selectedStops().isEmpty() && !d_ptr->m_model->currentStop())
|
|
|
955 |
deleteAction->setEnabled(false);
|
|
|
956 |
if (zoom() <= 1) {
|
|
|
957 |
zoomOutAction->setEnabled(false);
|
|
|
958 |
zoomAllAction->setEnabled(false);
|
|
|
959 |
} else if (zoom() >= 100) {
|
|
|
960 |
zoomInAction->setEnabled(false);
|
|
|
961 |
}
|
|
|
962 |
connect(newStopAction, SIGNAL(triggered()), this, SLOT(slotNewStop()));
|
|
|
963 |
connect(deleteAction, SIGNAL(triggered()), this, SLOT(slotDelete()));
|
|
|
964 |
connect(flipAllAction, SIGNAL(triggered()), this, SLOT(slotFlipAll()));
|
|
|
965 |
connect(selectAllAction, SIGNAL(triggered()), this, SLOT(slotSelectAll()));
|
|
|
966 |
connect(zoomInAction, SIGNAL(triggered()), this, SLOT(slotZoomIn()));
|
|
|
967 |
connect(zoomOutAction, SIGNAL(triggered()), this, SLOT(slotZoomOut()));
|
|
|
968 |
connect(zoomAllAction, SIGNAL(triggered()), this, SLOT(slotResetZoom()));
|
|
|
969 |
menu.addAction(newStopAction);
|
|
|
970 |
menu.addAction(deleteAction);
|
|
|
971 |
menu.addAction(flipAllAction);
|
|
|
972 |
menu.addAction(selectAllAction);
|
|
|
973 |
menu.addSeparator();
|
|
|
974 |
menu.addAction(zoomInAction);
|
|
|
975 |
menu.addAction(zoomOutAction);
|
|
|
976 |
menu.addAction(zoomAllAction);
|
|
|
977 |
menu.exec(e->globalPos());
|
|
|
978 |
}
|
|
|
979 |
|
|
|
980 |
void QtGradientStopsWidget::wheelEvent(QWheelEvent *e)
|
|
|
981 |
{
|
|
|
982 |
int numDegrees = e->delta() / 8;
|
|
|
983 |
int numSteps = numDegrees / 15;
|
|
|
984 |
|
|
|
985 |
int shift = numSteps;
|
|
|
986 |
if (shift < 0)
|
|
|
987 |
shift = -shift;
|
|
|
988 |
int pow = 1 << shift;
|
|
|
989 |
//const double c = 0.7071067; // 2 steps per doubled value
|
|
|
990 |
const double c = 0.5946036; // 4 steps pre doubled value
|
|
|
991 |
// in general c = pow(2, 1 / n) / 2; where n is the step
|
|
|
992 |
double factor = pow * c;
|
|
|
993 |
|
|
|
994 |
double newZoom = zoom();
|
|
|
995 |
if (numSteps < 0)
|
|
|
996 |
newZoom /= factor;
|
|
|
997 |
else
|
|
|
998 |
newZoom *= factor;
|
|
|
999 |
if (newZoom > 100)
|
|
|
1000 |
newZoom = 100;
|
|
|
1001 |
if (newZoom < 1)
|
|
|
1002 |
newZoom = 1;
|
|
|
1003 |
|
|
|
1004 |
if (newZoom == zoom())
|
|
|
1005 |
return;
|
|
|
1006 |
|
|
|
1007 |
setZoom(newZoom);
|
|
|
1008 |
emit zoomChanged(zoom());
|
|
|
1009 |
}
|
|
|
1010 |
|
|
|
1011 |
#ifndef QT_NO_DRAGANDDROP
|
|
|
1012 |
void QtGradientStopsWidget::dragEnterEvent(QDragEnterEvent *event)
|
|
|
1013 |
{
|
|
|
1014 |
const QMimeData *mime = event->mimeData();
|
|
|
1015 |
if (!mime->hasColor())
|
|
|
1016 |
return;
|
|
|
1017 |
event->accept();
|
|
|
1018 |
d_ptr->m_dragModel = d_ptr->m_model->clone();
|
|
|
1019 |
|
|
|
1020 |
d_ptr->m_dragColor = qvariant_cast<QColor>(mime->colorData());
|
|
|
1021 |
update();
|
|
|
1022 |
}
|
|
|
1023 |
|
|
|
1024 |
void QtGradientStopsWidget::dragMoveEvent(QDragMoveEvent *event)
|
|
|
1025 |
{
|
|
|
1026 |
QRectF rect = viewport()->rect();
|
|
|
1027 |
rect.adjust(0, d_ptr->m_handleSize, 0, 0);
|
|
|
1028 |
double x = d_ptr->fromViewport(event->pos().x());
|
|
|
1029 |
QtGradientStop *dragStop = d_ptr->stopAt(event->pos());
|
|
|
1030 |
if (dragStop) {
|
|
|
1031 |
event->accept();
|
|
|
1032 |
d_ptr->removeClonedStop();
|
|
|
1033 |
d_ptr->changeStop(dragStop->position());
|
|
|
1034 |
} else if (rect.contains(event->pos())) {
|
|
|
1035 |
event->accept();
|
|
|
1036 |
if (d_ptr->m_model->at(x)) {
|
|
|
1037 |
d_ptr->removeClonedStop();
|
|
|
1038 |
d_ptr->changeStop(x);
|
|
|
1039 |
} else {
|
|
|
1040 |
d_ptr->restoreChangedStop();
|
|
|
1041 |
d_ptr->cloneStop(x);
|
|
|
1042 |
}
|
|
|
1043 |
} else {
|
|
|
1044 |
event->ignore();
|
|
|
1045 |
d_ptr->removeClonedStop();
|
|
|
1046 |
d_ptr->restoreChangedStop();
|
|
|
1047 |
}
|
|
|
1048 |
|
|
|
1049 |
update();
|
|
|
1050 |
}
|
|
|
1051 |
|
|
|
1052 |
void QtGradientStopsWidget::dragLeaveEvent(QDragLeaveEvent *event)
|
|
|
1053 |
{
|
|
|
1054 |
event->accept();
|
|
|
1055 |
d_ptr->clearDrag();
|
|
|
1056 |
update();
|
|
|
1057 |
}
|
|
|
1058 |
|
|
|
1059 |
void QtGradientStopsWidget::dropEvent(QDropEvent *event)
|
|
|
1060 |
{
|
|
|
1061 |
event->accept();
|
|
|
1062 |
if (!d_ptr->m_dragModel)
|
|
|
1063 |
return;
|
|
|
1064 |
|
|
|
1065 |
if (d_ptr->m_changedStop)
|
|
|
1066 |
d_ptr->m_model->changeStop(d_ptr->m_model->at(d_ptr->m_changedStop->position()), d_ptr->m_dragColor);
|
|
|
1067 |
else if (d_ptr->m_clonedStop)
|
|
|
1068 |
d_ptr->m_model->addStop(d_ptr->m_clonedStop->position(), d_ptr->m_dragColor);
|
|
|
1069 |
|
|
|
1070 |
d_ptr->clearDrag();
|
|
|
1071 |
update();
|
|
|
1072 |
}
|
|
|
1073 |
|
|
|
1074 |
void QtGradientStopsWidgetPrivate::clearDrag()
|
|
|
1075 |
{
|
|
|
1076 |
removeClonedStop();
|
|
|
1077 |
restoreChangedStop();
|
|
|
1078 |
delete m_dragModel;
|
|
|
1079 |
m_dragModel = 0;
|
|
|
1080 |
}
|
|
|
1081 |
|
|
|
1082 |
void QtGradientStopsWidgetPrivate::removeClonedStop()
|
|
|
1083 |
{
|
|
|
1084 |
if (!m_clonedStop)
|
|
|
1085 |
return;
|
|
|
1086 |
m_dragModel->removeStop(m_clonedStop);
|
|
|
1087 |
m_clonedStop = 0;
|
|
|
1088 |
}
|
|
|
1089 |
|
|
|
1090 |
void QtGradientStopsWidgetPrivate::restoreChangedStop()
|
|
|
1091 |
{
|
|
|
1092 |
if (!m_changedStop)
|
|
|
1093 |
return;
|
|
|
1094 |
m_dragModel->changeStop(m_changedStop, m_model->at(m_changedStop->position())->color());
|
|
|
1095 |
m_changedStop = 0;
|
|
|
1096 |
m_dragStop = 0;
|
|
|
1097 |
}
|
|
|
1098 |
|
|
|
1099 |
void QtGradientStopsWidgetPrivate::changeStop(qreal pos)
|
|
|
1100 |
{
|
|
|
1101 |
QtGradientStop *stop = m_dragModel->at(pos);
|
|
|
1102 |
if (!stop)
|
|
|
1103 |
return;
|
|
|
1104 |
|
|
|
1105 |
m_dragModel->changeStop(stop, m_dragColor);
|
|
|
1106 |
m_changedStop = stop;
|
|
|
1107 |
m_dragStop = m_model->at(stop->position());
|
|
|
1108 |
}
|
|
|
1109 |
|
|
|
1110 |
void QtGradientStopsWidgetPrivate::cloneStop(qreal pos)
|
|
|
1111 |
{
|
|
|
1112 |
if (m_clonedStop) {
|
|
|
1113 |
m_dragModel->moveStop(m_clonedStop, pos);
|
|
|
1114 |
return;
|
|
|
1115 |
}
|
|
|
1116 |
QtGradientStop *stop = m_dragModel->at(pos);
|
|
|
1117 |
if (stop)
|
|
|
1118 |
return;
|
|
|
1119 |
|
|
|
1120 |
m_clonedStop = m_dragModel->addStop(pos, m_dragColor);
|
|
|
1121 |
}
|
|
|
1122 |
|
|
|
1123 |
#endif
|
|
|
1124 |
|
|
|
1125 |
void QtGradientStopsWidget::setZoom(double zoom)
|
|
|
1126 |
{
|
|
|
1127 |
double z = zoom;
|
|
|
1128 |
if (z < 1)
|
|
|
1129 |
z = 1;
|
|
|
1130 |
else if (z > 100)
|
|
|
1131 |
z = 100;
|
|
|
1132 |
|
|
|
1133 |
if (d_ptr->m_zoom == z)
|
|
|
1134 |
return;
|
|
|
1135 |
|
|
|
1136 |
d_ptr->m_zoom = z;
|
|
|
1137 |
int oldMax = horizontalScrollBar()->maximum();
|
|
|
1138 |
int oldVal = horizontalScrollBar()->value();
|
|
|
1139 |
horizontalScrollBar()->setRange(0, qRound(d_ptr->m_scaleFactor * (d_ptr->m_zoom - 1)));
|
|
|
1140 |
int newMax = horizontalScrollBar()->maximum();
|
|
|
1141 |
double newVal = (oldVal + (double)d_ptr->m_scaleFactor / 2) * (newMax + d_ptr->m_scaleFactor)
|
|
|
1142 |
/ (oldMax + d_ptr->m_scaleFactor) - (double)d_ptr->m_scaleFactor / 2;
|
|
|
1143 |
horizontalScrollBar()->setValue(qRound(newVal));
|
|
|
1144 |
viewport()->update();
|
|
|
1145 |
}
|
|
|
1146 |
|
|
|
1147 |
double QtGradientStopsWidget::zoom() const
|
|
|
1148 |
{
|
|
|
1149 |
return d_ptr->m_zoom;
|
|
|
1150 |
}
|
|
|
1151 |
|
|
|
1152 |
QT_END_NAMESPACE
|
|
|
1153 |
|
|
|
1154 |
#include "moc_qtgradientstopswidget.cpp"
|