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qt4-x11/doc/html/demos-composition-composition-h.html
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<h1 class="title">composition.h Example File</h1>
<span class="small-subtitle">demos/composition/composition.h</span>
<!-- $$$demos/composition/composition.h-description -->
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<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
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** information use the contact form at http://www.qt.io/contact-us.
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** 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
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**
****************************************************************************/</span>
<span class="preprocessor">#ifndef COMPOSITION_H</span>
<span class="preprocessor">#define COMPOSITION_H</span>
<span class="preprocessor">#include &quot;arthurwidgets.h&quot;</span>
<span class="preprocessor">#include &lt;QPainter&gt;</span>
<span class="preprocessor">#include &lt;QEvent&gt;</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 &lt;QtOpenGL&gt;</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">&amp;</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">&amp;</span>p);
<span class="type">void</span> drawSource(<span class="type"><a href="qpainter.html">QPainter</a></span> <span class="operator">&amp;</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>
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