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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the demonstration applications of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** 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 The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** BSD License Usage
** Alternatively, you may use this file under the terms of the BSD license
** as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of The Qt Company Ltd nor the names of its
** contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef COMPOSITION_H
#define COMPOSITION_H
#include "arthurwidgets.h"
#if QT_CONFIG(opengl)
#include "fbopaintdevice.h"
#include <QOpenGLTextureBlitter>
#endif
#include <QPainter>
#include <QEvent>
#include <memory>
QT_BEGIN_NAMESPACE
class QPushButton;
class QRadioButton;
QT_END_NAMESPACE
class CompositionWidget : public QWidget
{
Q_OBJECT
public:
explicit CompositionWidget(QWidget *parent = nullptr);
~CompositionWidget();
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:
explicit CompositionRenderer(QWidget *parent = nullptr);
~CompositionRenderer();
void paint(QPainter *) override;
void setCirclePos(const QPointF &pos);
QSize sizeHint() const override { 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 *) override;
void mouseMoveEvent(QMouseEvent *) override;
void mouseReleaseEvent(QMouseEvent *) override;
void timerEvent(QTimerEvent *) override;
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;
QImage m_image;
QImage m_buffer;
QImage m_base_buffer;
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;
#if QT_CONFIG(opengl)
std::unique_ptr<QFboPaintDevice> m_fbo;
int m_pbuffer_size; // width==height==size of pbuffer
uint m_base_tex;
uint m_compositing_tex;
QSize m_previous_size;
QOpenGLTextureBlitter m_blitter;
#endif
};
#endif // COMPOSITION_H
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