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/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the demonstration applications of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef COMPOSITION_H
#define COMPOSITION_H
#include "arthurwidgets.h"
#include <QPainter>
#include <QEvent>
QT_FORWARD_DECLARE_CLASS(QPushButton)
QT_FORWARD_DECLARE_CLASS(QRadioButton)
#ifdef QT_OPENGL_SUPPORT
#include <QtOpenGL>
#endif
class CompositionWidget : public QWidget
{
Q_OBJECT
public:
CompositionWidget(QWidget *parent);
public slots:
void nextMode();
private:
bool m_cycle_enabled;
QRadioButton *rbClear;
QRadioButton *rbSource;
QRadioButton *rbDest;
QRadioButton *rbSourceOver;
QRadioButton *rbDestOver;
QRadioButton *rbSourceIn;
QRadioButton *rbDestIn;
QRadioButton *rbSourceOut;
QRadioButton *rbDestOut;
QRadioButton *rbSourceAtop;
QRadioButton *rbDestAtop;
QRadioButton *rbXor;
QRadioButton *rbPlus;
QRadioButton *rbMultiply;
QRadioButton *rbScreen;
QRadioButton *rbOverlay;
QRadioButton *rbDarken;
QRadioButton *rbLighten;
QRadioButton *rbColorDodge;
QRadioButton *rbColorBurn;
QRadioButton *rbHardLight;
QRadioButton *rbSoftLight;
QRadioButton *rbDifference;
QRadioButton *rbExclusion;
};
class CompositionRenderer : public ArthurFrame
{
Q_OBJECT
enum ObjectType { NoObject, Circle, Rectangle, Image };
Q_PROPERTY(int circleColor READ circleColor WRITE setCircleColor)
Q_PROPERTY(int circleAlpha READ circleAlpha WRITE setCircleAlpha)
Q_PROPERTY(bool animation READ animationEnabled WRITE setAnimationEnabled)
public:
CompositionRenderer(QWidget *parent);
void paint(QPainter *);
void setCirclePos(const QPointF &pos);
QSize sizeHint() const { return QSize(500, 400); }
bool animationEnabled() const { return m_animation_enabled; }
int circleColor() const { return m_circle_hue; }
int circleAlpha() const { return m_circle_alpha; }
protected:
void mousePressEvent(QMouseEvent *);
void mouseMoveEvent(QMouseEvent *);
void mouseReleaseEvent(QMouseEvent *);
void timerEvent(QTimerEvent *);
public slots:
void setClearMode() { m_composition_mode = QPainter::CompositionMode_Clear; update(); }
void setSourceMode() { m_composition_mode = QPainter::CompositionMode_Source; update(); }
void setDestMode() { m_composition_mode = QPainter::CompositionMode_Destination; update(); }
void setSourceOverMode() { m_composition_mode = QPainter::CompositionMode_SourceOver; update(); }
void setDestOverMode() { m_composition_mode = QPainter::CompositionMode_DestinationOver; update(); }
void setSourceInMode() { m_composition_mode = QPainter::CompositionMode_SourceIn; update(); }
void setDestInMode() { m_composition_mode = QPainter::CompositionMode_DestinationIn; update(); }
void setSourceOutMode() { m_composition_mode = QPainter::CompositionMode_SourceOut; update(); }
void setDestOutMode() { m_composition_mode = QPainter::CompositionMode_DestinationOut; update(); }
void setSourceAtopMode() { m_composition_mode = QPainter::CompositionMode_SourceAtop; update(); }
void setDestAtopMode() { m_composition_mode = QPainter::CompositionMode_DestinationAtop; update(); }
void setXorMode() { m_composition_mode = QPainter::CompositionMode_Xor; update(); }
void setPlusMode() { m_composition_mode = QPainter::CompositionMode_Plus; update(); }
void setMultiplyMode() { m_composition_mode = QPainter::CompositionMode_Multiply; update(); }
void setScreenMode() { m_composition_mode = QPainter::CompositionMode_Screen; update(); }
void setOverlayMode() { m_composition_mode = QPainter::CompositionMode_Overlay; update(); }
void setDarkenMode() { m_composition_mode = QPainter::CompositionMode_Darken; update(); }
void setLightenMode() { m_composition_mode = QPainter::CompositionMode_Lighten; update(); }
void setColorDodgeMode() { m_composition_mode = QPainter::CompositionMode_ColorDodge; update(); }
void setColorBurnMode() { m_composition_mode = QPainter::CompositionMode_ColorBurn; update(); }
void setHardLightMode() { m_composition_mode = QPainter::CompositionMode_HardLight; update(); }
void setSoftLightMode() { m_composition_mode = QPainter::CompositionMode_SoftLight; update(); }
void setDifferenceMode() { m_composition_mode = QPainter::CompositionMode_Difference; update(); }
void setExclusionMode() { m_composition_mode = QPainter::CompositionMode_Exclusion; update(); }
void setCircleAlpha(int alpha) { m_circle_alpha = alpha; update(); }
void setCircleColor(int hue) { m_circle_hue = hue; update(); }
void setAnimationEnabled(bool enabled);
private:
void updateCirclePos();
void drawBase(QPainter &p);
void drawSource(QPainter &p);
QPainter::CompositionMode m_composition_mode;
#ifdef Q_WS_QWS
QPixmap m_image;
QPixmap m_buffer;
QPixmap m_base_buffer;
#else
QImage m_image;
QImage m_buffer;
QImage m_base_buffer;
#endif
int m_circle_alpha;
int m_circle_hue;
QPointF m_circle_pos;
QPointF m_offset;
ObjectType m_current_object;
bool m_animation_enabled;
int m_animationTimer;
#ifdef QT_OPENGL_SUPPORT
QGLPixelBuffer *m_pbuffer;
GLuint m_base_tex;
GLuint m_compositing_tex;
int m_pbuffer_size; // width==height==size of pbuffer
QSize m_previous_size;
#endif
};
#endif // COMPOSITION_H
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