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Breadcrumbs go here --> </ul> </div> <div class="toolbuttons toolblock"> <ul> <li id="smallA" class="t_button">A</li> <li id="medA" class="t_button active">A</li> <li id="bigA" class="t_button">A</li> <li id="print" class="t_button"><a href="javascript:this.print();"> <span>Print</span></a></li> </ul> </div> </div> <div class="content mainContent"> <h1 class="title">composition.h Example File</h1> <span class="small-subtitle">demos/composition/composition.h</span> <!-- $$$demos/composition/composition.h-description --> <div class="descr"> <a name="details"></a> <pre class="cpp"> <span class="comment">/**************************************************************************** ** ** Copyright (C) 2015 The Qt Company Ltd. ** Contact: http://www.qt.io/licensing/ ** ** 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 The Qt Company. For licensing terms ** and conditions see http://www.qt.io/terms-conditions. For further ** information use the contact form at http://www.qt.io/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 or version 3 as published by the Free ** Software Foundation and appearing in the file LICENSE.LGPLv21 and ** LICENSE.LGPLv3 included in the packaging of this file. Please review the ** following information to ensure the GNU Lesser General Public License ** requirements will be met: https://www.gnu.org/licenses/lgpl.html and ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. ** ** As a special exception, The Qt Company gives you certain additional ** rights. These rights are described in The Qt Company 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. ** ** $QT_END_LICENSE$ ** ****************************************************************************/</span> <span class="preprocessor">#ifndef COMPOSITION_H</span> <span class="preprocessor">#define COMPOSITION_H</span> <span class="preprocessor">#include "arthurwidgets.h"</span> <span class="preprocessor">#include <QPainter></span> <span class="preprocessor">#include <QEvent></span> QT_FORWARD_DECLARE_CLASS(<span class="type"><a href="qpushbutton.html">QPushButton</a></span>) QT_FORWARD_DECLARE_CLASS(<span class="type"><a href="qradiobutton.html">QRadioButton</a></span>) <span class="preprocessor">#ifdef QT_OPENGL_SUPPORT</span> <span class="preprocessor">#include <QtOpenGL></span> <span class="preprocessor">#endif</span> <span class="keyword">class</span> CompositionWidget : <span class="keyword">public</span> <span class="type"><a href="qwidget.html">QWidget</a></span> { Q_OBJECT <span class="keyword">public</span>: CompositionWidget(<span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>parent); <span class="keyword">public</span> <span class="keyword">slots</span>: <span class="type">void</span> nextMode(); <span class="keyword">private</span>: <span class="type">bool</span> m_cycle_enabled; <span class="type"><a href="qradiobutton.html">QRadioButton</a></span> <span class="operator">*</span>rbClear; <span class="type"><a href="qradiobutton.html">QRadioButton</a></span> <span class="operator">*</span>rbSource; <span class="type"><a href="qradiobutton.html">QRadioButton</a></span> <span class="operator">*</span>rbDest; <span class="type"><a href="qradiobutton.html">QRadioButton</a></span> <span class="operator">*</span>rbSourceOver; <span class="type"><a href="qradiobutton.html">QRadioButton</a></span> <span class="operator">*</span>rbDestOver; <span class="type"><a href="qradiobutton.html">QRadioButton</a></span> <span class="operator">*</span>rbSourceIn; <span class="type"><a href="qradiobutton.html">QRadioButton</a></span> <span class="operator">*</span>rbDestIn; <span class="type"><a href="qradiobutton.html">QRadioButton</a></span> <span class="operator">*</span>rbSourceOut; <span class="type"><a href="qradiobutton.html">QRadioButton</a></span> <span class="operator">*</span>rbDestOut; <span class="type"><a href="qradiobutton.html">QRadioButton</a></span> <span class="operator">*</span>rbSourceAtop; <span class="type"><a href="qradiobutton.html">QRadioButton</a></span> <span class="operator">*</span>rbDestAtop; <span class="type"><a href="qradiobutton.html">QRadioButton</a></span> <span class="operator">*</span>rbXor; <span class="type"><a href="qradiobutton.html">QRadioButton</a></span> <span class="operator">*</span>rbPlus; <span class="type"><a href="qradiobutton.html">QRadioButton</a></span> <span class="operator">*</span>rbMultiply; <span class="type"><a href="qradiobutton.html">QRadioButton</a></span> <span class="operator">*</span>rbScreen; <span class="type"><a href="qradiobutton.html">QRadioButton</a></span> <span class="operator">*</span>rbOverlay; <span class="type"><a href="qradiobutton.html">QRadioButton</a></span> <span class="operator">*</span>rbDarken; <span class="type"><a href="qradiobutton.html">QRadioButton</a></span> <span class="operator">*</span>rbLighten; <span class="type"><a href="qradiobutton.html">QRadioButton</a></span> <span class="operator">*</span>rbColorDodge; <span class="type"><a href="qradiobutton.html">QRadioButton</a></span> <span class="operator">*</span>rbColorBurn; <span class="type"><a href="qradiobutton.html">QRadioButton</a></span> <span class="operator">*</span>rbHardLight; <span class="type"><a href="qradiobutton.html">QRadioButton</a></span> <span class="operator">*</span>rbSoftLight; <span class="type"><a href="qradiobutton.html">QRadioButton</a></span> <span class="operator">*</span>rbDifference; <span class="type"><a href="qradiobutton.html">QRadioButton</a></span> <span class="operator">*</span>rbExclusion; }; <span class="keyword">class</span> CompositionRenderer : <span class="keyword">public</span> ArthurFrame { Q_OBJECT <span class="keyword">enum</span> ObjectType { NoObject<span class="operator">,</span> Circle<span class="operator">,</span> Rectangle<span class="operator">,</span> Image }; Q_PROPERTY(<span class="type">int</span> circleColor READ circleColor WRITE setCircleColor) Q_PROPERTY(<span class="type">int</span> circleAlpha READ circleAlpha WRITE setCircleAlpha) Q_PROPERTY(<span class="type">bool</span> animation READ animationEnabled WRITE setAnimationEnabled) <span class="keyword">public</span>: CompositionRenderer(<span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>parent); <span class="type">void</span> paint(<span class="type"><a href="qpainter.html">QPainter</a></span> <span class="operator">*</span>); <span class="type">void</span> setCirclePos(<span class="keyword">const</span> <span class="type"><a href="qpointf.html">QPointF</a></span> <span class="operator">&</span>pos); <span class="type"><a href="qsize.html">QSize</a></span> sizeHint() <span class="keyword">const</span> { <span class="keyword">return</span> <span class="type"><a href="qsize.html">QSize</a></span>(<span class="number">500</span><span class="operator">,</span> <span class="number">400</span>); } <span class="type">bool</span> animationEnabled() <span class="keyword">const</span> { <span class="keyword">return</span> m_animation_enabled; } <span class="type">int</span> circleColor() <span class="keyword">const</span> { <span class="keyword">return</span> m_circle_hue; } <span class="type">int</span> circleAlpha() <span class="keyword">const</span> { <span class="keyword">return</span> m_circle_alpha; } <span class="keyword">protected</span>: <span class="type">void</span> mousePressEvent(<span class="type"><a href="qmouseevent.html">QMouseEvent</a></span> <span class="operator">*</span>); <span class="type">void</span> mouseMoveEvent(<span class="type"><a href="qmouseevent.html">QMouseEvent</a></span> <span class="operator">*</span>); <span class="type">void</span> mouseReleaseEvent(<span class="type"><a href="qmouseevent.html">QMouseEvent</a></span> <span class="operator">*</span>); <span class="type">void</span> timerEvent(<span class="type"><a href="qtimerevent.html">QTimerEvent</a></span> <span class="operator">*</span>); <span class="keyword">public</span> <span class="keyword">slots</span>: <span class="type">void</span> setClearMode() { m_composition_mode <span class="operator">=</span> <span class="type"><a href="qpainter.html">QPainter</a></span><span class="operator">::</span>CompositionMode_Clear; update(); } <span class="type">void</span> setSourceMode() { m_composition_mode <span class="operator">=</span> <span class="type"><a href="qpainter.html">QPainter</a></span><span class="operator">::</span>CompositionMode_Source; update(); } <span class="type">void</span> setDestMode() { m_composition_mode <span class="operator">=</span> <span class="type"><a href="qpainter.html">QPainter</a></span><span class="operator">::</span>CompositionMode_Destination; update(); } <span class="type">void</span> setSourceOverMode() { m_composition_mode <span class="operator">=</span> <span class="type"><a href="qpainter.html">QPainter</a></span><span class="operator">::</span>CompositionMode_SourceOver; update(); } <span class="type">void</span> setDestOverMode() { m_composition_mode <span class="operator">=</span> <span class="type"><a href="qpainter.html">QPainter</a></span><span class="operator">::</span>CompositionMode_DestinationOver; update(); } <span class="type">void</span> setSourceInMode() { m_composition_mode <span class="operator">=</span> <span class="type"><a href="qpainter.html">QPainter</a></span><span class="operator">::</span>CompositionMode_SourceIn; update(); } <span class="type">void</span> setDestInMode() { m_composition_mode <span class="operator">=</span> <span class="type"><a href="qpainter.html">QPainter</a></span><span class="operator">::</span>CompositionMode_DestinationIn; update(); } <span class="type">void</span> setSourceOutMode() { m_composition_mode <span class="operator">=</span> <span class="type"><a href="qpainter.html">QPainter</a></span><span class="operator">::</span>CompositionMode_SourceOut; update(); } <span class="type">void</span> setDestOutMode() { m_composition_mode <span class="operator">=</span> <span class="type"><a href="qpainter.html">QPainter</a></span><span class="operator">::</span>CompositionMode_DestinationOut; update(); } <span class="type">void</span> setSourceAtopMode() { m_composition_mode <span class="operator">=</span> <span class="type"><a href="qpainter.html">QPainter</a></span><span class="operator">::</span>CompositionMode_SourceAtop; update(); } <span class="type">void</span> setDestAtopMode() { m_composition_mode <span class="operator">=</span> <span class="type"><a href="qpainter.html">QPainter</a></span><span class="operator">::</span>CompositionMode_DestinationAtop; update(); } <span class="type">void</span> setXorMode() { m_composition_mode <span class="operator">=</span> <span class="type"><a href="qpainter.html">QPainter</a></span><span class="operator">::</span>CompositionMode_Xor; update(); } <span class="type">void</span> setPlusMode() { m_composition_mode <span class="operator">=</span> <span class="type"><a href="qpainter.html">QPainter</a></span><span class="operator">::</span>CompositionMode_Plus; update(); } <span class="type">void</span> setMultiplyMode() { m_composition_mode <span class="operator">=</span> <span class="type"><a href="qpainter.html">QPainter</a></span><span class="operator">::</span>CompositionMode_Multiply; update(); } <span class="type">void</span> setScreenMode() { m_composition_mode <span class="operator">=</span> <span class="type"><a href="qpainter.html">QPainter</a></span><span class="operator">::</span>CompositionMode_Screen; update(); } <span class="type">void</span> setOverlayMode() { m_composition_mode <span class="operator">=</span> <span class="type"><a href="qpainter.html">QPainter</a></span><span class="operator">::</span>CompositionMode_Overlay; update(); } <span class="type">void</span> setDarkenMode() { m_composition_mode <span class="operator">=</span> <span class="type"><a href="qpainter.html">QPainter</a></span><span class="operator">::</span>CompositionMode_Darken; update(); } <span class="type">void</span> setLightenMode() { m_composition_mode <span class="operator">=</span> <span class="type"><a href="qpainter.html">QPainter</a></span><span class="operator">::</span>CompositionMode_Lighten; update(); } <span class="type">void</span> setColorDodgeMode() { m_composition_mode <span class="operator">=</span> <span class="type"><a href="qpainter.html">QPainter</a></span><span class="operator">::</span>CompositionMode_ColorDodge; update(); } <span class="type">void</span> setColorBurnMode() { m_composition_mode <span class="operator">=</span> <span class="type"><a href="qpainter.html">QPainter</a></span><span class="operator">::</span>CompositionMode_ColorBurn; update(); } <span class="type">void</span> setHardLightMode() { m_composition_mode <span class="operator">=</span> <span class="type"><a href="qpainter.html">QPainter</a></span><span class="operator">::</span>CompositionMode_HardLight; update(); } <span class="type">void</span> setSoftLightMode() { m_composition_mode <span class="operator">=</span> <span class="type"><a href="qpainter.html">QPainter</a></span><span class="operator">::</span>CompositionMode_SoftLight; update(); } <span class="type">void</span> setDifferenceMode() { m_composition_mode <span class="operator">=</span> <span class="type"><a href="qpainter.html">QPainter</a></span><span class="operator">::</span>CompositionMode_Difference; update(); } <span class="type">void</span> setExclusionMode() { m_composition_mode <span class="operator">=</span> <span class="type"><a href="qpainter.html">QPainter</a></span><span class="operator">::</span>CompositionMode_Exclusion; update(); } <span class="type">void</span> setCircleAlpha(<span class="type">int</span> alpha) { m_circle_alpha <span class="operator">=</span> alpha; update(); } <span class="type">void</span> setCircleColor(<span class="type">int</span> hue) { m_circle_hue <span class="operator">=</span> hue; update(); } <span class="type">void</span> setAnimationEnabled(<span class="type">bool</span> enabled); <span class="keyword">private</span>: <span class="type">void</span> updateCirclePos(); <span class="type">void</span> drawBase(<span class="type"><a href="qpainter.html">QPainter</a></span> <span class="operator">&</span>p); <span class="type">void</span> drawSource(<span class="type"><a href="qpainter.html">QPainter</a></span> <span class="operator">&</span>p); <span class="type"><a href="qpainter.html">QPainter</a></span><span class="operator">::</span>CompositionMode m_composition_mode; <span class="preprocessor">#ifdef Q_WS_QWS</span> <span class="type"><a href="qpixmap.html">QPixmap</a></span> m_image; <span class="type"><a href="qpixmap.html">QPixmap</a></span> m_buffer; <span class="type"><a href="qpixmap.html">QPixmap</a></span> m_base_buffer; <span class="preprocessor">#else</span> <span class="type"><a href="qimage.html">QImage</a></span> m_image; <span class="type"><a href="qimage.html">QImage</a></span> m_buffer; <span class="type"><a href="qimage.html">QImage</a></span> m_base_buffer; <span class="preprocessor">#endif</span> <span class="type">int</span> m_circle_alpha; <span class="type">int</span> m_circle_hue; <span class="type"><a href="qpointf.html">QPointF</a></span> m_circle_pos; <span class="type"><a href="qpointf.html">QPointF</a></span> m_offset; ObjectType m_current_object; <span class="type">bool</span> m_animation_enabled; <span class="type">int</span> m_animationTimer; <span class="preprocessor">#ifdef QT_OPENGL_SUPPORT</span> <span class="type"><a href="qglpixelbuffer.html">QGLPixelBuffer</a></span> <span class="operator">*</span>m_pbuffer; GLuint m_base_tex; GLuint m_compositing_tex; <span class="type">int</span> m_pbuffer_size; <span class="comment">// width==height==size of pbuffer</span> <span class="type"><a href="qsize.html">QSize</a></span> m_previous_size; <span class="preprocessor">#endif</span> }; <span class="preprocessor">#endif // COMPOSITION_H</span></pre> </div> <!-- @@@demos/composition/composition.h --> </div> </div> </div> <div class="ft"> <span></span> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2015 The Qt Company Ltd. 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