<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>pathdeform.cpp Example File | Qt Widgets 5.12.6</title> <link rel="stylesheet" type="text/css" href="style/offline-simple.css" /> <script type="text/javascript"> document.getElementsByTagName("link").item(0).setAttribute("href", "style/offline.css"); // loading style sheet breaks anchors that were jumped to before // so force jumping to anchor again setTimeout(function() { var anchor = location.hash; // need to jump to different anchor first (e.g. none) location.hash = "#"; setTimeout(function() { location.hash = anchor; }, 0); }, 0); </script> </head> <body> <div class="header" id="qtdocheader"> <div class="main"> <div class="main-rounded"> <div class="navigationbar"> <table><tr> <td >Qt 5.12</td><td ><a href="qtwidgets-index.html">Qt Widgets</a></td><td ><a href="qtwidgets-painting-deform-example.html">Vector Deformation</a></td><td >pathdeform.cpp Example File</td></tr></table><table class="buildversion"><tr> <td id="buildversion" width="100%" align="right"><a href="qtwidgets-index.html">Qt 5.12.6 Reference Documentation</a></td> </tr></table> </div> </div> <div class="content"> <div class="line"> <div class="content mainContent"> <div class="sidebar"><div class="sidebar-content" id="sidebar-content"></div></div> <h1 class="title">pathdeform.cpp Example File</h1> <span class="subtitle">painting/deform/pathdeform.cpp</span> <!-- $$$painting/deform/pathdeform.cpp-description --> <div class="descr"> <a name="details"></a> <pre class="cpp"> <span class="comment">/**************************************************************************** ** ** 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." ** ** $QT_END_LICENSE$ ** ****************************************************************************/</span> <span class="preprocessor">#include "pathdeform.h"</span> <span class="preprocessor">#include <QGuiApplication></span> <span class="preprocessor">#include <QScreen></span> <span class="preprocessor">#include <QtDebug></span> <span class="preprocessor">#include <QMouseEvent></span> <span class="preprocessor">#include <QTimerEvent></span> <span class="preprocessor">#include <QLayout></span> <span class="preprocessor">#include <QLineEdit></span> <span class="preprocessor">#include <QPainter></span> <span class="preprocessor">#include <QSlider></span> <span class="preprocessor">#include <QLabel></span> <span class="preprocessor">#include <QDesktopWidget></span> <span class="preprocessor">#include <qmath.h></span> PathDeformControls<span class="operator">::</span>PathDeformControls(<span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>parent<span class="operator">,</span> PathDeformRenderer<span class="operator">*</span> renderer<span class="operator">,</span> bool smallScreen) : <span class="type"><a href="qwidget.html">QWidget</a></span>(parent) { m_renderer <span class="operator">=</span> renderer; <span class="keyword">if</span> (smallScreen) layoutForSmallScreen(); <span class="keyword">else</span> layoutForDesktop(); } <span class="type">void</span> PathDeformControls<span class="operator">::</span>layoutForDesktop() { <span class="type"><a href="qgroupbox.html">QGroupBox</a></span><span class="operator">*</span> mainGroup <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qgroupbox.html">QGroupBox</a></span>(<span class="keyword">this</span>); mainGroup<span class="operator">-</span><span class="operator">></span>setTitle(tr(<span class="string">"Controls"</span>)); <span class="type"><a href="qgroupbox.html">QGroupBox</a></span> <span class="operator">*</span>radiusGroup <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qgroupbox.html">QGroupBox</a></span>(mainGroup); radiusGroup<span class="operator">-</span><span class="operator">></span>setTitle(tr(<span class="string">"Lens Radius"</span>)); <span class="type"><a href="qslider.html">QSlider</a></span> <span class="operator">*</span>radiusSlider <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qslider.html">QSlider</a></span>(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>Horizontal<span class="operator">,</span> radiusGroup); radiusSlider<span class="operator">-</span><span class="operator">></span>setRange(<span class="number">15</span><span class="operator">,</span> <span class="number">150</span>); radiusSlider<span class="operator">-</span><span class="operator">></span>setSizePolicy(<span class="type"><a href="qsizepolicy.html">QSizePolicy</a></span><span class="operator">::</span>Preferred<span class="operator">,</span> <span class="type"><a href="qsizepolicy.html">QSizePolicy</a></span><span class="operator">::</span>Fixed); <span class="type"><a href="qgroupbox.html">QGroupBox</a></span> <span class="operator">*</span>deformGroup <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qgroupbox.html">QGroupBox</a></span>(mainGroup); deformGroup<span class="operator">-</span><span class="operator">></span>setTitle(tr(<span class="string">"Deformation"</span>)); <span class="type"><a href="qslider.html">QSlider</a></span> <span class="operator">*</span>deformSlider <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qslider.html">QSlider</a></span>(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>Horizontal<span class="operator">,</span> deformGroup); deformSlider<span class="operator">-</span><span class="operator">></span>setRange(<span class="operator">-</span><span class="number">100</span><span class="operator">,</span> <span class="number">100</span>); deformSlider<span class="operator">-</span><span class="operator">></span>setSizePolicy(<span class="type"><a href="qsizepolicy.html">QSizePolicy</a></span><span class="operator">::</span>Preferred<span class="operator">,</span> <span class="type"><a href="qsizepolicy.html">QSizePolicy</a></span><span class="operator">::</span>Fixed); <span class="type"><a href="qgroupbox.html">QGroupBox</a></span> <span class="operator">*</span>fontSizeGroup <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qgroupbox.html">QGroupBox</a></span>(mainGroup); fontSizeGroup<span class="operator">-</span><span class="operator">></span>setTitle(tr(<span class="string">"Font Size"</span>)); <span class="type"><a href="qslider.html">QSlider</a></span> <span class="operator">*</span>fontSizeSlider <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qslider.html">QSlider</a></span>(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>Horizontal<span class="operator">,</span> fontSizeGroup); fontSizeSlider<span class="operator">-</span><span class="operator">></span>setRange(<span class="number">16</span><span class="operator">,</span> <span class="number">200</span>); fontSizeSlider<span class="operator">-</span><span class="operator">></span>setSizePolicy(<span class="type"><a href="qsizepolicy.html">QSizePolicy</a></span><span class="operator">::</span>Preferred<span class="operator">,</span> <span class="type"><a href="qsizepolicy.html">QSizePolicy</a></span><span class="operator">::</span>Fixed); <span class="type"><a href="qgroupbox.html">QGroupBox</a></span> <span class="operator">*</span>textGroup <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qgroupbox.html">QGroupBox</a></span>(mainGroup); textGroup<span class="operator">-</span><span class="operator">></span>setTitle(tr(<span class="string">"Text"</span>)); <span class="type"><a href="qlineedit.html">QLineEdit</a></span> <span class="operator">*</span>textInput <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qlineedit.html">QLineEdit</a></span>(textGroup); <span class="type"><a href="qpushbutton.html">QPushButton</a></span> <span class="operator">*</span>animateButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qpushbutton.html">QPushButton</a></span>(mainGroup); animateButton<span class="operator">-</span><span class="operator">></span>setText(tr(<span class="string">"Animated"</span>)); animateButton<span class="operator">-</span><span class="operator">></span>setCheckable(<span class="keyword">true</span>); <span class="type"><a href="qpushbutton.html">QPushButton</a></span> <span class="operator">*</span>showSourceButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qpushbutton.html">QPushButton</a></span>(mainGroup); showSourceButton<span class="operator">-</span><span class="operator">></span>setText(tr(<span class="string">"Show Source"</span>)); <span class="preprocessor">#if QT_CONFIG(opengl)</span> <span class="type"><a href="qpushbutton.html">QPushButton</a></span> <span class="operator">*</span>enableOpenGLButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qpushbutton.html">QPushButton</a></span>(mainGroup); enableOpenGLButton<span class="operator">-</span><span class="operator">></span>setText(tr(<span class="string">"Use OpenGL"</span>)); enableOpenGLButton<span class="operator">-</span><span class="operator">></span>setCheckable(<span class="keyword">true</span>); enableOpenGLButton<span class="operator">-</span><span class="operator">></span>setChecked(m_renderer<span class="operator">-</span><span class="operator">></span>usesOpenGL()); <span class="preprocessor">#endif</span> <span class="type"><a href="qpushbutton.html">QPushButton</a></span> <span class="operator">*</span>whatsThisButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qpushbutton.html">QPushButton</a></span>(mainGroup); whatsThisButton<span class="operator">-</span><span class="operator">></span>setText(tr(<span class="string">"What's This?"</span>)); whatsThisButton<span class="operator">-</span><span class="operator">></span>setCheckable(<span class="keyword">true</span>); mainGroup<span class="operator">-</span><span class="operator">></span>setFixedWidth(<span class="number">180</span>); <span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span> <span class="operator">*</span>mainGroupLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span>(mainGroup); mainGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(radiusGroup); mainGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(deformGroup); mainGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(fontSizeGroup); mainGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(textGroup); mainGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(animateButton); mainGroupLayout<span class="operator">-</span><span class="operator">></span>addStretch(<span class="number">1</span>); <span class="preprocessor">#if QT_CONFIG(opengl)</span> mainGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(enableOpenGLButton); <span class="preprocessor">#endif</span> mainGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(showSourceButton); mainGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(whatsThisButton); <span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span> <span class="operator">*</span>radiusGroupLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span>(radiusGroup); radiusGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(radiusSlider); <span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span> <span class="operator">*</span>deformGroupLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span>(deformGroup); deformGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(deformSlider); <span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span> <span class="operator">*</span>fontSizeGroupLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span>(fontSizeGroup); fontSizeGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(fontSizeSlider); <span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span> <span class="operator">*</span>textGroupLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span>(textGroup); textGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(textInput); <span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span> <span class="operator">*</span> mainLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span>(<span class="keyword">this</span>); mainLayout<span class="operator">-</span><span class="operator">></span>addWidget(mainGroup); mainLayout<span class="operator">-</span><span class="operator">></span>setMargin(<span class="number">0</span>); connect(radiusSlider<span class="operator">,</span> SIGNAL(valueChanged(<span class="type">int</span>))<span class="operator">,</span> m_renderer<span class="operator">,</span> SLOT(setRadius(<span class="type">int</span>))); connect(deformSlider<span class="operator">,</span> SIGNAL(valueChanged(<span class="type">int</span>))<span class="operator">,</span> m_renderer<span class="operator">,</span> SLOT(setIntensity(<span class="type">int</span>))); connect(fontSizeSlider<span class="operator">,</span> SIGNAL(valueChanged(<span class="type">int</span>))<span class="operator">,</span> m_renderer<span class="operator">,</span> SLOT(setFontSize(<span class="type">int</span>))); connect(animateButton<span class="operator">,</span> SIGNAL(clicked(bool))<span class="operator">,</span> m_renderer<span class="operator">,</span> SLOT(setAnimated(bool))); <span class="preprocessor">#if QT_CONFIG(opengl)</span> connect(enableOpenGLButton<span class="operator">,</span> SIGNAL(clicked(bool))<span class="operator">,</span> m_renderer<span class="operator">,</span> SLOT(enableOpenGL(bool))); <span class="preprocessor">#endif</span> connect(textInput<span class="operator">,</span> SIGNAL(textChanged(<span class="type"><a href="../qtcore/qstring.html">QString</a></span>))<span class="operator">,</span> m_renderer<span class="operator">,</span> SLOT(setText(<span class="type"><a href="../qtcore/qstring.html">QString</a></span>))); connect(m_renderer<span class="operator">,</span> SIGNAL(descriptionEnabledChanged(bool))<span class="operator">,</span> whatsThisButton<span class="operator">,</span> SLOT(setChecked(bool))); connect(whatsThisButton<span class="operator">,</span> SIGNAL(clicked(bool))<span class="operator">,</span> m_renderer<span class="operator">,</span> SLOT(setDescriptionEnabled(bool))); connect(showSourceButton<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> m_renderer<span class="operator">,</span> SLOT(showSource())); animateButton<span class="operator">-</span><span class="operator">></span>animateClick(); deformSlider<span class="operator">-</span><span class="operator">></span>setValue(<span class="number">80</span>); fontSizeSlider<span class="operator">-</span><span class="operator">></span>setValue(<span class="number">120</span>); radiusSlider<span class="operator">-</span><span class="operator">></span>setValue(<span class="number">100</span>); textInput<span class="operator">-</span><span class="operator">></span>setText(tr(<span class="string">"Qt"</span>)); } <span class="type">void</span> PathDeformControls<span class="operator">::</span>layoutForSmallScreen() { <span class="type"><a href="qgroupbox.html">QGroupBox</a></span><span class="operator">*</span> mainGroup <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qgroupbox.html">QGroupBox</a></span>(<span class="keyword">this</span>); mainGroup<span class="operator">-</span><span class="operator">></span>setTitle(tr(<span class="string">"Controls"</span>)); <span class="type"><a href="qlabel.html">QLabel</a></span> <span class="operator">*</span>radiusLabel <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qlabel.html">QLabel</a></span>(mainGroup); radiusLabel<span class="operator">-</span><span class="operator">></span>setText(tr(<span class="string">"Lens Radius:"</span>)); <span class="type"><a href="qslider.html">QSlider</a></span> <span class="operator">*</span>radiusSlider <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qslider.html">QSlider</a></span>(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>Horizontal<span class="operator">,</span> mainGroup); radiusSlider<span class="operator">-</span><span class="operator">></span>setRange(<span class="number">15</span><span class="operator">,</span> <span class="number">150</span>); radiusSlider<span class="operator">-</span><span class="operator">></span>setSizePolicy(<span class="type"><a href="qsizepolicy.html">QSizePolicy</a></span><span class="operator">::</span>Expanding<span class="operator">,</span> <span class="type"><a href="qsizepolicy.html">QSizePolicy</a></span><span class="operator">::</span>Fixed); <span class="type"><a href="qlabel.html">QLabel</a></span> <span class="operator">*</span>deformLabel <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qlabel.html">QLabel</a></span>(mainGroup); deformLabel<span class="operator">-</span><span class="operator">></span>setText(tr(<span class="string">"Deformation:"</span>)); <span class="type"><a href="qslider.html">QSlider</a></span> <span class="operator">*</span>deformSlider <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qslider.html">QSlider</a></span>(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>Horizontal<span class="operator">,</span> mainGroup); deformSlider<span class="operator">-</span><span class="operator">></span>setRange(<span class="operator">-</span><span class="number">100</span><span class="operator">,</span> <span class="number">100</span>); deformSlider<span class="operator">-</span><span class="operator">></span>setSizePolicy(<span class="type"><a href="qsizepolicy.html">QSizePolicy</a></span><span class="operator">::</span>Expanding<span class="operator">,</span> <span class="type"><a href="qsizepolicy.html">QSizePolicy</a></span><span class="operator">::</span>Fixed); <span class="type"><a href="qlabel.html">QLabel</a></span> <span class="operator">*</span>fontSizeLabel <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qlabel.html">QLabel</a></span>(mainGroup); fontSizeLabel<span class="operator">-</span><span class="operator">></span>setText(tr(<span class="string">"Font Size:"</span>)); <span class="type"><a href="qslider.html">QSlider</a></span> <span class="operator">*</span>fontSizeSlider <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qslider.html">QSlider</a></span>(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>Horizontal<span class="operator">,</span> mainGroup); fontSizeSlider<span class="operator">-</span><span class="operator">></span>setRange(<span class="number">16</span><span class="operator">,</span> <span class="number">200</span>); fontSizeSlider<span class="operator">-</span><span class="operator">></span>setSizePolicy(<span class="type"><a href="qsizepolicy.html">QSizePolicy</a></span><span class="operator">::</span>Expanding<span class="operator">,</span> <span class="type"><a href="qsizepolicy.html">QSizePolicy</a></span><span class="operator">::</span>Fixed); <span class="type"><a href="qpushbutton.html">QPushButton</a></span> <span class="operator">*</span>animateButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qpushbutton.html">QPushButton</a></span>(tr(<span class="string">"Animated"</span>)<span class="operator">,</span> mainGroup); animateButton<span class="operator">-</span><span class="operator">></span>setCheckable(<span class="keyword">true</span>); <span class="preprocessor">#if QT_CONFIG(opengl)</span> <span class="type"><a href="qpushbutton.html">QPushButton</a></span> <span class="operator">*</span>enableOpenGLButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qpushbutton.html">QPushButton</a></span>(mainGroup); enableOpenGLButton<span class="operator">-</span><span class="operator">></span>setText(tr(<span class="string">"Use OpenGL"</span>)); enableOpenGLButton<span class="operator">-</span><span class="operator">></span>setCheckable(mainGroup); enableOpenGLButton<span class="operator">-</span><span class="operator">></span>setChecked(m_renderer<span class="operator">-</span><span class="operator">></span>usesOpenGL()); <span class="preprocessor">#endif</span> <span class="type"><a href="qpushbutton.html">QPushButton</a></span> <span class="operator">*</span>quitButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qpushbutton.html">QPushButton</a></span>(tr(<span class="string">"Quit"</span>)<span class="operator">,</span> mainGroup); <span class="type"><a href="qpushbutton.html">QPushButton</a></span> <span class="operator">*</span>okButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qpushbutton.html">QPushButton</a></span>(tr(<span class="string">"OK"</span>)<span class="operator">,</span> mainGroup); <span class="type"><a href="qgridlayout.html">QGridLayout</a></span> <span class="operator">*</span>mainGroupLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qgridlayout.html">QGridLayout</a></span>(mainGroup); mainGroupLayout<span class="operator">-</span><span class="operator">></span>setMargin(<span class="number">0</span>); mainGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(radiusLabel<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>AlignRight); mainGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(radiusSlider<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">1</span>); mainGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(deformLabel<span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>AlignRight); mainGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(deformSlider<span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">1</span>); mainGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(fontSizeLabel<span class="operator">,</span> <span class="number">2</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>AlignRight); mainGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(fontSizeSlider<span class="operator">,</span> <span class="number">2</span><span class="operator">,</span> <span class="number">1</span>); mainGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(animateButton<span class="operator">,</span> <span class="number">3</span><span class="operator">,</span><span class="number">0</span><span class="operator">,</span> <span class="number">1</span><span class="operator">,</span><span class="number">2</span>); <span class="preprocessor">#if QT_CONFIG(opengl)</span> mainGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(enableOpenGLButton<span class="operator">,</span> <span class="number">4</span><span class="operator">,</span><span class="number">0</span><span class="operator">,</span> <span class="number">1</span><span class="operator">,</span><span class="number">2</span>); <span class="preprocessor">#endif</span> <span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span> <span class="operator">*</span>mainLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span>(<span class="keyword">this</span>); mainLayout<span class="operator">-</span><span class="operator">></span>addWidget(mainGroup); mainLayout<span class="operator">-</span><span class="operator">></span>addStretch(<span class="number">1</span>); mainLayout<span class="operator">-</span><span class="operator">></span>addWidget(okButton); mainLayout<span class="operator">-</span><span class="operator">></span>addWidget(quitButton); connect(quitButton<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SIGNAL(quitPressed())); connect(okButton<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SIGNAL(okPressed())); connect(radiusSlider<span class="operator">,</span> SIGNAL(valueChanged(<span class="type">int</span>))<span class="operator">,</span> m_renderer<span class="operator">,</span> SLOT(setRadius(<span class="type">int</span>))); connect(deformSlider<span class="operator">,</span> SIGNAL(valueChanged(<span class="type">int</span>))<span class="operator">,</span> m_renderer<span class="operator">,</span> SLOT(setIntensity(<span class="type">int</span>))); connect(fontSizeSlider<span class="operator">,</span> SIGNAL(valueChanged(<span class="type">int</span>))<span class="operator">,</span> m_renderer<span class="operator">,</span> SLOT(setFontSize(<span class="type">int</span>))); connect(animateButton<span class="operator">,</span> SIGNAL(clicked(bool))<span class="operator">,</span> m_renderer<span class="operator">,</span> SLOT(setAnimated(bool))); <span class="preprocessor">#if QT_CONFIG(opengl)</span> connect(enableOpenGLButton<span class="operator">,</span> SIGNAL(clicked(bool))<span class="operator">,</span> m_renderer<span class="operator">,</span> SLOT(enableOpenGL(bool))); <span class="preprocessor">#endif</span> animateButton<span class="operator">-</span><span class="operator">></span>animateClick(); deformSlider<span class="operator">-</span><span class="operator">></span>setValue(<span class="number">80</span>); fontSizeSlider<span class="operator">-</span><span class="operator">></span>setValue(<span class="number">120</span>); <span class="type"><a href="../qtcore/qrect.html">QRect</a></span> screen_size <span class="operator">=</span> <span class="type"><a href="../qtgui/qguiapplication.html">QGuiApplication</a></span><span class="operator">::</span>primaryScreen()<span class="operator">-</span><span class="operator">></span>geometry(); radiusSlider<span class="operator">-</span><span class="operator">></span>setValue(<a href="../qtcore/qtglobal.html#qMin">qMin</a>(screen_size<span class="operator">.</span>width()<span class="operator">,</span> screen_size<span class="operator">.</span>height())<span class="operator">/</span><span class="number">5</span>); m_renderer<span class="operator">-</span><span class="operator">></span>setText(tr(<span class="string">"Qt"</span>)); } PathDeformWidget<span class="operator">::</span>PathDeformWidget(<span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>parent<span class="operator">,</span> bool smallScreen) : <span class="type"><a href="qwidget.html">QWidget</a></span>(parent) { setWindowTitle(tr(<span class="string">"Vector Deformation"</span>)); m_renderer <span class="operator">=</span> <span class="keyword">new</span> PathDeformRenderer(<span class="keyword">this</span><span class="operator">,</span> smallScreen); m_renderer<span class="operator">-</span><span class="operator">></span>setSizePolicy(<span class="type"><a href="qsizepolicy.html">QSizePolicy</a></span><span class="operator">::</span>Expanding<span class="operator">,</span> <span class="type"><a href="qsizepolicy.html">QSizePolicy</a></span><span class="operator">::</span>Expanding); <span class="comment">// Layouts</span> <span class="type"><a href="qhboxlayout.html">QHBoxLayout</a></span> <span class="operator">*</span>mainLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qhboxlayout.html">QHBoxLayout</a></span>(<span class="keyword">this</span>); mainLayout<span class="operator">-</span><span class="operator">></span>addWidget(m_renderer); m_controls <span class="operator">=</span> <span class="keyword">new</span> PathDeformControls(<span class="number">0</span><span class="operator">,</span> m_renderer<span class="operator">,</span> smallScreen); m_controls<span class="operator">-</span><span class="operator">></span>setSizePolicy(<span class="type"><a href="qsizepolicy.html">QSizePolicy</a></span><span class="operator">::</span>Fixed<span class="operator">,</span> <span class="type"><a href="qsizepolicy.html">QSizePolicy</a></span><span class="operator">::</span>Minimum); <span class="keyword">if</span> (<span class="operator">!</span>smallScreen) mainLayout<span class="operator">-</span><span class="operator">></span>addWidget(m_controls); m_renderer<span class="operator">-</span><span class="operator">></span>loadSourceFile(<span class="string">":res/deform/pathdeform.cpp"</span>); m_renderer<span class="operator">-</span><span class="operator">></span>loadDescription(<span class="string">":res/deform/pathdeform.html"</span>); m_renderer<span class="operator">-</span><span class="operator">></span>setDescriptionEnabled(<span class="keyword">false</span>); connect(m_renderer<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(showControls())); connect(m_controls<span class="operator">,</span> SIGNAL(okPressed())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(hideControls())); connect(m_controls<span class="operator">,</span> SIGNAL(quitPressed())<span class="operator">,</span> <span class="type"><a href="../qtcore/qcoreapplication.html">QCoreApplication</a></span><span class="operator">::</span>instance()<span class="operator">,</span> SLOT(quit())); } <span class="type">void</span> PathDeformWidget<span class="operator">::</span>showControls() { m_controls<span class="operator">-</span><span class="operator">></span>showFullScreen(); } <span class="type">void</span> PathDeformWidget<span class="operator">::</span>hideControls() { m_controls<span class="operator">-</span><span class="operator">></span>hide(); } <span class="type">void</span> PathDeformWidget<span class="operator">::</span>setStyle( <span class="type"><a href="qstyle.html">QStyle</a></span> <span class="operator">*</span> style ) { <span class="type"><a href="qwidget.html">QWidget</a></span><span class="operator">::</span>setStyle(style); <span class="keyword">if</span> (m_controls <span class="operator">=</span><span class="operator">=</span> <span class="number">0</span>) <span class="keyword">return</span>; m_controls<span class="operator">-</span><span class="operator">></span>setStyle(style); <span class="type"><a href="../qtcore/qlist.html">QList</a></span><span class="operator"><</span><span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span><span class="operator">></span> widgets <span class="operator">=</span> m_controls<span class="operator">-</span><span class="operator">></span>findChildren<span class="operator"><</span><span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span><span class="operator">></span>(); foreach (<span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>w<span class="operator">,</span> widgets) w<span class="operator">-</span><span class="operator">></span>setStyle(style); } <span class="keyword">static</span> <span class="keyword">inline</span> <span class="type"><a href="../qtcore/qrect.html">QRect</a></span> circle_bounds(<span class="keyword">const</span> <span class="type"><a href="../qtcore/qpointf.html">QPointF</a></span> <span class="operator">&</span>center<span class="operator">,</span> <span class="type"><a href="../qtcore/qtglobal.html#qreal-typedef">qreal</a></span> radius<span class="operator">,</span> <span class="type"><a href="../qtcore/qtglobal.html#qreal-typedef">qreal</a></span> compensation) { <span class="keyword">return</span> <span class="type"><a href="../qtcore/qrect.html">QRect</a></span>(<a href="../qtcore/qtglobal.html#qRound">qRound</a>(center<span class="operator">.</span>x() <span class="operator">-</span> radius <span class="operator">-</span> compensation)<span class="operator">,</span> <a href="../qtcore/qtglobal.html#qRound">qRound</a>(center<span class="operator">.</span>y() <span class="operator">-</span> radius <span class="operator">-</span> compensation)<span class="operator">,</span> <a href="../qtcore/qtglobal.html#qRound">qRound</a>((radius <span class="operator">+</span> compensation) <span class="operator">*</span> <span class="number">2</span>)<span class="operator">,</span> <a href="../qtcore/qtglobal.html#qRound">qRound</a>((radius <span class="operator">+</span> compensation) <span class="operator">*</span> <span class="number">2</span>)); } <span class="keyword">const</span> <span class="type">int</span> LENS_EXTENT <span class="operator">=</span> <span class="number">10</span>; PathDeformRenderer<span class="operator">::</span>PathDeformRenderer(<span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>widget<span class="operator">,</span> bool smallScreen) : ArthurFrame(widget) { m_radius <span class="operator">=</span> <span class="number">100</span>; m_pos <span class="operator">=</span> <span class="type"><a href="../qtcore/qpointf.html">QPointF</a></span>(m_radius<span class="operator">,</span> m_radius); m_direction <span class="operator">=</span> <span class="type"><a href="../qtcore/qpointf.html">QPointF</a></span>(<span class="number">1</span><span class="operator">,</span> <span class="number">1</span>); m_fontSize <span class="operator">=</span> <span class="number">24</span>; m_animated <span class="operator">=</span> <span class="keyword">true</span>; m_repaintTimer<span class="operator">.</span>start(<span class="number">25</span><span class="operator">,</span> <span class="keyword">this</span>); m_repaintTracker<span class="operator">.</span>start(); m_intensity <span class="operator">=</span> <span class="number">100</span>; m_smallScreen <span class="operator">=</span> smallScreen; <span class="comment">// m_fpsTimer.start(1000, this);</span> <span class="comment">// m_fpsCounter = 0;</span> generateLensPixmap(); } <span class="type">void</span> PathDeformRenderer<span class="operator">::</span>setText(<span class="keyword">const</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> <span class="operator">&</span>text) { m_text <span class="operator">=</span> text; <span class="type"><a href="../qtgui/qfont.html">QFont</a></span> f(<span class="string">"times new roman,utopia"</span>); f<span class="operator">.</span>setStyleStrategy(<span class="type"><a href="../qtgui/qfont.html">QFont</a></span><span class="operator">::</span>ForceOutline); f<span class="operator">.</span>setPointSize(m_fontSize); f<span class="operator">.</span>setStyleHint(<span class="type"><a href="../qtgui/qfont.html">QFont</a></span><span class="operator">::</span>Times); <span class="type"><a href="../qtgui/qfontmetrics.html">QFontMetrics</a></span> fm(f); m_paths<span class="operator">.</span>clear(); m_pathBounds <span class="operator">=</span> <span class="type"><a href="../qtcore/qrect.html">QRect</a></span>(); <span class="type"><a href="../qtcore/qpointf.html">QPointF</a></span> advance(<span class="number">0</span><span class="operator">,</span> <span class="number">0</span>); bool do_quick <span class="operator">=</span> <span class="keyword">true</span>; <span class="keyword">for</span> (<span class="type">int</span> i<span class="operator">=</span><span class="number">0</span>; i<span class="operator"><</span>text<span class="operator">.</span>size(); <span class="operator">+</span><span class="operator">+</span>i) { <span class="keyword">if</span> (text<span class="operator">.</span>at(i)<span class="operator">.</span>unicode() <span class="operator">></span><span class="operator">=</span> <span class="number">0x4ff</span> <span class="operator">&</span><span class="operator">&</span> text<span class="operator">.</span>at(i)<span class="operator">.</span>unicode() <span class="operator"><</span><span class="operator">=</span> <span class="number">0x1e00</span>) { do_quick <span class="operator">=</span> <span class="keyword">false</span>; <span class="keyword">break</span>; } } <span class="keyword">if</span> (do_quick) { <span class="keyword">for</span> (<span class="type">int</span> i<span class="operator">=</span><span class="number">0</span>; i<span class="operator"><</span>text<span class="operator">.</span>size(); <span class="operator">+</span><span class="operator">+</span>i) { <span class="type"><a href="../qtgui/qpainterpath.html">QPainterPath</a></span> path; path<span class="operator">.</span>addText(advance<span class="operator">,</span> f<span class="operator">,</span> text<span class="operator">.</span>mid(i<span class="operator">,</span> <span class="number">1</span>)); m_pathBounds <span class="operator">|</span><span class="operator">=</span> path<span class="operator">.</span>boundingRect(); m_paths <span class="operator"><</span><span class="operator"><</span> path; advance <span class="operator">+</span><span class="operator">=</span> <span class="type"><a href="../qtcore/qpointf.html">QPointF</a></span>(fm<span class="operator">.</span>horizontalAdvance(text<span class="operator">.</span>mid(i<span class="operator">,</span> <span class="number">1</span>))<span class="operator">,</span> <span class="number">0</span>); } } <span class="keyword">else</span> { <span class="type"><a href="../qtgui/qpainterpath.html">QPainterPath</a></span> path; path<span class="operator">.</span>addText(advance<span class="operator">,</span> f<span class="operator">,</span> text); m_pathBounds <span class="operator">|</span><span class="operator">=</span> path<span class="operator">.</span>boundingRect(); m_paths <span class="operator"><</span><span class="operator"><</span> path; } <span class="keyword">for</span> (<span class="type">int</span> i<span class="operator">=</span><span class="number">0</span>; i<span class="operator"><</span>m_paths<span class="operator">.</span>size(); <span class="operator">+</span><span class="operator">+</span>i) m_paths<span class="operator">[</span>i<span class="operator">]</span> <span class="operator">=</span> m_paths<span class="operator">[</span>i<span class="operator">]</span> <span class="operator">*</span> <span class="type"><a href="../qtgui/qmatrix.html">QMatrix</a></span>(<span class="number">1</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="operator">-</span>m_pathBounds<span class="operator">.</span>x()<span class="operator">,</span> <span class="operator">-</span>m_pathBounds<span class="operator">.</span>y()); update(); } <span class="type">void</span> PathDeformRenderer<span class="operator">::</span>generateLensPixmap() { <span class="type"><a href="../qtcore/qtglobal.html#qreal-typedef">qreal</a></span> rad <span class="operator">=</span> m_radius <span class="operator">+</span> LENS_EXTENT; <span class="type"><a href="../qtcore/qrect.html">QRect</a></span> bounds <span class="operator">=</span> circle_bounds(<span class="type"><a href="../qtcore/qpointf.html">QPointF</a></span>()<span class="operator">,</span> rad<span class="operator">,</span> <span class="number">0</span>); <span class="type"><a href="../qtgui/qpainter.html">QPainter</a></span> painter; <span class="keyword">if</span> (preferImage()) { m_lens_image <span class="operator">=</span> <span class="type"><a href="../qtgui/qimage.html">QImage</a></span>(bounds<span class="operator">.</span>size()<span class="operator">,</span> <span class="type"><a href="../qtgui/qimage.html">QImage</a></span><span class="operator">::</span>Format_ARGB32_Premultiplied); m_lens_image<span class="operator">.</span>fill(<span class="number">0</span>); painter<span class="operator">.</span>begin(<span class="operator">&</span>m_lens_image); } <span class="keyword">else</span> { m_lens_pixmap <span class="operator">=</span> <span class="type"><a href="../qtgui/qpixmap.html">QPixmap</a></span>(bounds<span class="operator">.</span>size()); m_lens_pixmap<span class="operator">.</span>fill(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>transparent); painter<span class="operator">.</span>begin(<span class="operator">&</span>m_lens_pixmap); } <span class="type"><a href="../qtgui/qradialgradient.html">QRadialGradient</a></span> gr(rad<span class="operator">,</span> rad<span class="operator">,</span> rad<span class="operator">,</span> <span class="number">3</span> <span class="operator">*</span> rad <span class="operator">/</span> <span class="number">5</span><span class="operator">,</span> <span class="number">3</span> <span class="operator">*</span> rad <span class="operator">/</span> <span class="number">5</span>); gr<span class="operator">.</span>setColorAt(<span class="number">0.0</span><span class="operator">,</span> <span class="type"><a href="../qtgui/qcolor.html">QColor</a></span>(<span class="number">255</span><span class="operator">,</span> <span class="number">255</span><span class="operator">,</span> <span class="number">255</span><span class="operator">,</span> <span class="number">191</span>)); gr<span class="operator">.</span>setColorAt(<span class="number">0.2</span><span class="operator">,</span> <span class="type"><a href="../qtgui/qcolor.html">QColor</a></span>(<span class="number">255</span><span class="operator">,</span> <span class="number">255</span><span class="operator">,</span> <span class="number">127</span><span class="operator">,</span> <span class="number">191</span>)); gr<span class="operator">.</span>setColorAt(<span class="number">0.9</span><span class="operator">,</span> <span class="type"><a href="../qtgui/qcolor.html">QColor</a></span>(<span class="number">150</span><span class="operator">,</span> <span class="number">150</span><span class="operator">,</span> <span class="number">200</span><span class="operator">,</span> <span class="number">63</span>)); gr<span class="operator">.</span>setColorAt(<span class="number">0.95</span><span class="operator">,</span> <span class="type"><a href="../qtgui/qcolor.html">QColor</a></span>(<span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">127</span>)); gr<span class="operator">.</span>setColorAt(<span class="number">1</span><span class="operator">,</span> <span class="type"><a href="../qtgui/qcolor.html">QColor</a></span>(<span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">0</span>)); painter<span class="operator">.</span>setRenderHint(<span class="type"><a href="../qtgui/qpainter.html">QPainter</a></span><span class="operator">::</span>Antialiasing); painter<span class="operator">.</span>setBrush(gr); painter<span class="operator">.</span>setPen(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>NoPen); painter<span class="operator">.</span>drawEllipse(<span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> bounds<span class="operator">.</span>width()<span class="operator">,</span> bounds<span class="operator">.</span>height()); } <span class="type">void</span> PathDeformRenderer<span class="operator">::</span>setAnimated(bool animated) { m_animated <span class="operator">=</span> animated; <span class="keyword">if</span> (m_animated) { <span class="comment">// m_fpsTimer.start(1000, this);</span> <span class="comment">// m_fpsCounter = 0;</span> m_repaintTimer<span class="operator">.</span>start(<span class="number">25</span><span class="operator">,</span> <span class="keyword">this</span>); m_repaintTracker<span class="operator">.</span>start(); } <span class="keyword">else</span> { <span class="comment">// m_fpsTimer.stop();</span> m_repaintTimer<span class="operator">.</span>stop(); } } <span class="type">void</span> PathDeformRenderer<span class="operator">::</span>timerEvent(<span class="type"><a href="../qtcore/qtimerevent.html">QTimerEvent</a></span> <span class="operator">*</span>e) { <span class="keyword">if</span> (e<span class="operator">-</span><span class="operator">></span>timerId() <span class="operator">=</span><span class="operator">=</span> m_repaintTimer<span class="operator">.</span>timerId()) { <span class="keyword">if</span> (<span class="type"><a href="../qtcore/qlinef.html">QLineF</a></span>(<span class="type"><a href="../qtcore/qpointf.html">QPointF</a></span>(<span class="number">0</span><span class="operator">,</span><span class="number">0</span>)<span class="operator">,</span> m_direction)<span class="operator">.</span>length() <span class="operator">></span> <span class="number">1</span>) m_direction <span class="operator">*</span><span class="operator">=</span> <span class="number">0.995</span>; <span class="type"><a href="../qtcore/qtglobal.html#qreal-typedef">qreal</a></span> time <span class="operator">=</span> m_repaintTracker<span class="operator">.</span>restart(); <span class="type"><a href="../qtcore/qrect.html">QRect</a></span> rectBefore <span class="operator">=</span> circle_bounds(m_pos<span class="operator">,</span> m_radius<span class="operator">,</span> m_fontSize); <span class="type"><a href="../qtcore/qtglobal.html#qreal-typedef">qreal</a></span> dx <span class="operator">=</span> m_direction<span class="operator">.</span>x(); <span class="type"><a href="../qtcore/qtglobal.html#qreal-typedef">qreal</a></span> dy <span class="operator">=</span> m_direction<span class="operator">.</span>y(); <span class="keyword">if</span> (time <span class="operator">></span> <span class="number">0</span>) { dx <span class="operator">=</span> dx <span class="operator">*</span> time <span class="operator">*</span> <span class="operator">.</span><span class="number">1</span>; dy <span class="operator">=</span> dy <span class="operator">*</span> time <span class="operator">*</span> <span class="operator">.</span><span class="number">1</span>; } m_pos <span class="operator">+</span><span class="operator">=</span> <span class="type"><a href="../qtcore/qpointf.html">QPointF</a></span>(dx<span class="operator">,</span> dy); <span class="keyword">if</span> (m_pos<span class="operator">.</span>x() <span class="operator">-</span> m_radius <span class="operator"><</span> <span class="number">0</span>) { m_direction<span class="operator">.</span>setX(<span class="operator">-</span>m_direction<span class="operator">.</span>x()); m_pos<span class="operator">.</span>setX(m_radius); } <span class="keyword">else</span> <span class="keyword">if</span> (m_pos<span class="operator">.</span>x() <span class="operator">+</span> m_radius <span class="operator">></span> width()) { m_direction<span class="operator">.</span>setX(<span class="operator">-</span>m_direction<span class="operator">.</span>x()); m_pos<span class="operator">.</span>setX(width() <span class="operator">-</span> m_radius); } <span class="keyword">if</span> (m_pos<span class="operator">.</span>y() <span class="operator">-</span> m_radius <span class="operator"><</span> <span class="number">0</span>) { m_direction<span class="operator">.</span>setY(<span class="operator">-</span>m_direction<span class="operator">.</span>y()); m_pos<span class="operator">.</span>setY(m_radius); } <span class="keyword">else</span> <span class="keyword">if</span> (m_pos<span class="operator">.</span>y() <span class="operator">+</span> m_radius <span class="operator">></span> height()) { m_direction<span class="operator">.</span>setY(<span class="operator">-</span>m_direction<span class="operator">.</span>y()); m_pos<span class="operator">.</span>setY(height() <span class="operator">-</span> m_radius); } <span class="preprocessor">#if QT_CONFIG(opengl)</span> <span class="keyword">if</span> (usesOpenGL()) { update(); } <span class="keyword">else</span> <span class="preprocessor">#endif</span> { <span class="type"><a href="../qtcore/qrect.html">QRect</a></span> rectAfter <span class="operator">=</span> circle_bounds(m_pos<span class="operator">,</span> m_radius<span class="operator">,</span> m_fontSize); update(rectAfter <span class="operator">|</span> rectBefore); } } <span class="comment">// else if (e->timerId() == m_fpsTimer.timerId()) {</span> <span class="comment">// printf("fps: %d\n", m_fpsCounter);</span> <span class="comment">// emit frameRate(m_fpsCounter);</span> <span class="comment">// m_fpsCounter = 0;</span> <span class="comment">// }</span> } <span class="type">void</span> PathDeformRenderer<span class="operator">::</span>mousePressEvent(<span class="type"><a href="../qtgui/qmouseevent.html">QMouseEvent</a></span> <span class="operator">*</span>e) { <span class="keyword">if</span> (m_show_doc) { setDescriptionEnabled(<span class="keyword">false</span>); <span class="keyword">return</span>; } setDescriptionEnabled(<span class="keyword">false</span>); m_repaintTimer<span class="operator">.</span>stop(); m_offset <span class="operator">=</span> <span class="type"><a href="../qtcore/qpointf.html">QPointF</a></span>(); <span class="keyword">if</span> (<span class="type"><a href="../qtcore/qlinef.html">QLineF</a></span>(m_pos<span class="operator">,</span> e<span class="operator">-</span><span class="operator">></span>pos())<span class="operator">.</span>length() <span class="operator"><</span><span class="operator">=</span> m_radius) m_offset <span class="operator">=</span> m_pos <span class="operator">-</span> e<span class="operator">-</span><span class="operator">></span>pos(); m_mousePress <span class="operator">=</span> e<span class="operator">-</span><span class="operator">></span>pos(); <span class="comment">// If we're not running in small screen mode, always assume we're dragging</span> m_mouseDrag <span class="operator">=</span> <span class="operator">!</span>m_smallScreen; mouseMoveEvent(e); } <span class="type">void</span> PathDeformRenderer<span class="operator">::</span>mouseReleaseEvent(<span class="type"><a href="../qtgui/qmouseevent.html">QMouseEvent</a></span> <span class="operator">*</span>e) { <span class="keyword">if</span> (e<span class="operator">-</span><span class="operator">></span>buttons() <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>NoButton <span class="operator">&</span><span class="operator">&</span> m_animated) { m_repaintTimer<span class="operator">.</span>start(<span class="number">10</span><span class="operator">,</span> <span class="keyword">this</span>); m_repaintTracker<span class="operator">.</span>start(); } <span class="keyword">if</span> (<span class="operator">!</span>m_mouseDrag <span class="operator">&</span><span class="operator">&</span> m_smallScreen) <span class="keyword">emit</span> clicked(); } <span class="type">void</span> PathDeformRenderer<span class="operator">::</span>mouseMoveEvent(<span class="type"><a href="../qtgui/qmouseevent.html">QMouseEvent</a></span> <span class="operator">*</span>e) { <span class="keyword">if</span> (<span class="operator">!</span>m_mouseDrag <span class="operator">&</span><span class="operator">&</span> (<span class="type"><a href="../qtcore/qlinef.html">QLineF</a></span>(m_mousePress<span class="operator">,</span> e<span class="operator">-</span><span class="operator">></span>pos())<span class="operator">.</span>length() <span class="operator">></span> <span class="number">25.0</span>) ) m_mouseDrag <span class="operator">=</span> <span class="keyword">true</span>; <span class="keyword">if</span> (m_mouseDrag) { <span class="type"><a href="../qtcore/qrect.html">QRect</a></span> rectBefore <span class="operator">=</span> circle_bounds(m_pos<span class="operator">,</span> m_radius<span class="operator">,</span> m_fontSize); <span class="keyword">if</span> (e<span class="operator">-</span><span class="operator">></span>type() <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="../qtcore/qevent.html">QEvent</a></span><span class="operator">::</span>MouseMove) { <span class="type"><a href="../qtcore/qlinef.html">QLineF</a></span> line(m_pos<span class="operator">,</span> e<span class="operator">-</span><span class="operator">></span>pos() <span class="operator">+</span> m_offset); line<span class="operator">.</span>setLength(line<span class="operator">.</span>length() <span class="operator">*</span> <span class="operator">.</span><span class="number">1</span>); <span class="type"><a href="../qtcore/qpointf.html">QPointF</a></span> dir(line<span class="operator">.</span>dx()<span class="operator">,</span> line<span class="operator">.</span>dy()); m_direction <span class="operator">=</span> (m_direction <span class="operator">+</span> dir) <span class="operator">/</span> <span class="number">2</span>; } m_pos <span class="operator">=</span> e<span class="operator">-</span><span class="operator">></span>pos() <span class="operator">+</span> m_offset; <span class="preprocessor">#if QT_CONFIG(opengl)</span> <span class="keyword">if</span> (usesOpenGL()) { update(); } <span class="keyword">else</span> <span class="preprocessor">#endif</span> { <span class="type"><a href="../qtcore/qrect.html">QRect</a></span> rectAfter <span class="operator">=</span> circle_bounds(m_pos<span class="operator">,</span> m_radius<span class="operator">,</span> m_fontSize); update(rectBefore <span class="operator">|</span> rectAfter); } } } <span class="type"><a href="../qtgui/qpainterpath.html">QPainterPath</a></span> PathDeformRenderer<span class="operator">::</span>lensDeform(<span class="keyword">const</span> <span class="type"><a href="../qtgui/qpainterpath.html">QPainterPath</a></span> <span class="operator">&</span>source<span class="operator">,</span> <span class="keyword">const</span> <span class="type"><a href="../qtcore/qpointf.html">QPointF</a></span> <span class="operator">&</span>offset) { <span class="type"><a href="../qtgui/qpainterpath.html">QPainterPath</a></span> path; path<span class="operator">.</span>addPath(source); <span class="type"><a href="../qtcore/qtglobal.html#qreal-typedef">qreal</a></span> flip <span class="operator">=</span> m_intensity <span class="operator">/</span> <span class="type"><a href="../qtcore/qtglobal.html#qreal-typedef">qreal</a></span>(<span class="number">100</span>); <span class="keyword">for</span> (<span class="type">int</span> i<span class="operator">=</span><span class="number">0</span>; i<span class="operator"><</span>path<span class="operator">.</span>elementCount(); <span class="operator">+</span><span class="operator">+</span>i) { <span class="keyword">const</span> <span class="type"><a href="../qtgui/qpainterpath.html">QPainterPath</a></span><span class="operator">::</span>Element <span class="operator">&</span>e <span class="operator">=</span> path<span class="operator">.</span>elementAt(i); <span class="type"><a href="../qtcore/qtglobal.html#qreal-typedef">qreal</a></span> x <span class="operator">=</span> e<span class="operator">.</span>x <span class="operator">+</span> offset<span class="operator">.</span>x(); <span class="type"><a href="../qtcore/qtglobal.html#qreal-typedef">qreal</a></span> y <span class="operator">=</span> e<span class="operator">.</span>y <span class="operator">+</span> offset<span class="operator">.</span>y(); <span class="type"><a href="../qtcore/qtglobal.html#qreal-typedef">qreal</a></span> dx <span class="operator">=</span> x <span class="operator">-</span> m_pos<span class="operator">.</span>x(); <span class="type"><a href="../qtcore/qtglobal.html#qreal-typedef">qreal</a></span> dy <span class="operator">=</span> y <span class="operator">-</span> m_pos<span class="operator">.</span>y(); <span class="type"><a href="../qtcore/qtglobal.html#qreal-typedef">qreal</a></span> len <span class="operator">=</span> m_radius <span class="operator">-</span> <a href="../qtcore/qtmath.html#qSqrt">qSqrt</a>(dx <span class="operator">*</span> dx <span class="operator">+</span> dy <span class="operator">*</span> dy); <span class="keyword">if</span> (len <span class="operator">></span> <span class="number">0</span>) { path<span class="operator">.</span>setElementPositionAt(i<span class="operator">,</span> x <span class="operator">+</span> flip <span class="operator">*</span> dx <span class="operator">*</span> len <span class="operator">/</span> m_radius<span class="operator">,</span> y <span class="operator">+</span> flip <span class="operator">*</span> dy <span class="operator">*</span> len <span class="operator">/</span> m_radius); } <span class="keyword">else</span> { path<span class="operator">.</span>setElementPositionAt(i<span class="operator">,</span> x<span class="operator">,</span> y); } } <span class="keyword">return</span> path; } <span class="type">void</span> PathDeformRenderer<span class="operator">::</span>paint(<span class="type"><a href="../qtgui/qpainter.html">QPainter</a></span> <span class="operator">*</span>painter) { <span class="type">int</span> pad_x <span class="operator">=</span> <span class="number">5</span>; <span class="type">int</span> pad_y <span class="operator">=</span> <span class="number">5</span>; <span class="type">int</span> skip_x <span class="operator">=</span> <a href="../qtcore/qtglobal.html#qRound">qRound</a>(m_pathBounds<span class="operator">.</span>width() <span class="operator">+</span> pad_x <span class="operator">+</span> m_fontSize<span class="operator">/</span><span class="number">2</span>); <span class="type">int</span> skip_y <span class="operator">=</span> <a href="../qtcore/qtglobal.html#qRound">qRound</a>(m_pathBounds<span class="operator">.</span>height() <span class="operator">+</span> pad_y); painter<span class="operator">-</span><span class="operator">></span>setPen(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>NoPen); painter<span class="operator">-</span><span class="operator">></span>setBrush(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>black); <span class="type"><a href="../qtcore/qrectf.html">QRectF</a></span> clip(painter<span class="operator">-</span><span class="operator">></span>clipPath()<span class="operator">.</span>boundingRect()); <span class="type">int</span> overlap <span class="operator">=</span> pad_x <span class="operator">/</span> <span class="number">2</span>; <span class="keyword">for</span> (<span class="type">int</span> start_y<span class="operator">=</span><span class="number">0</span>; start_y <span class="operator"><</span> height(); start_y <span class="operator">+</span><span class="operator">=</span> skip_y) { <span class="keyword">if</span> (start_y <span class="operator">></span> clip<span class="operator">.</span>bottom()) <span class="keyword">break</span>; <span class="type">int</span> start_x <span class="operator">=</span> <span class="operator">-</span>overlap; <span class="keyword">for</span> (; start_x <span class="operator"><</span> width(); start_x <span class="operator">+</span><span class="operator">=</span> skip_x) { <span class="keyword">if</span> (start_y <span class="operator">+</span> skip_y <span class="operator">></span><span class="operator">=</span> clip<span class="operator">.</span>top() <span class="operator">&</span><span class="operator">&</span> start_x <span class="operator">+</span> skip_x <span class="operator">></span><span class="operator">=</span> clip<span class="operator">.</span>left() <span class="operator">&</span><span class="operator">&</span> start_x <span class="operator"><</span><span class="operator">=</span> clip<span class="operator">.</span>right()) { <span class="keyword">for</span> (<span class="type">int</span> i<span class="operator">=</span><span class="number">0</span>; i<span class="operator"><</span>m_paths<span class="operator">.</span>size(); <span class="operator">+</span><span class="operator">+</span>i) { <span class="type"><a href="../qtgui/qpainterpath.html">QPainterPath</a></span> path <span class="operator">=</span> lensDeform(m_paths<span class="operator">[</span>i<span class="operator">]</span><span class="operator">,</span> <span class="type"><a href="../qtcore/qpointf.html">QPointF</a></span>(start_x<span class="operator">,</span> start_y)); painter<span class="operator">-</span><span class="operator">></span>drawPath(path); } } } overlap <span class="operator">=</span> skip_x <span class="operator">-</span> (start_x <span class="operator">-</span> width()); } <span class="keyword">if</span> (preferImage()) { painter<span class="operator">-</span><span class="operator">></span>drawImage(m_pos <span class="operator">-</span> <span class="type"><a href="../qtcore/qpointf.html">QPointF</a></span>(m_radius <span class="operator">+</span> LENS_EXTENT<span class="operator">,</span> m_radius <span class="operator">+</span> LENS_EXTENT)<span class="operator">,</span> m_lens_image); } <span class="keyword">else</span> { painter<span class="operator">-</span><span class="operator">></span>drawPixmap(m_pos <span class="operator">-</span> <span class="type"><a href="../qtcore/qpointf.html">QPointF</a></span>(m_radius <span class="operator">+</span> LENS_EXTENT<span class="operator">,</span> m_radius <span class="operator">+</span> LENS_EXTENT)<span class="operator">,</span> m_lens_pixmap); } } <span class="type">void</span> PathDeformRenderer<span class="operator">::</span>setRadius(<span class="type">int</span> radius) { <span class="type"><a href="../qtcore/qtglobal.html#qreal-typedef">qreal</a></span> max <span class="operator">=</span> <a href="../qtcore/qtglobal.html#qMax">qMax</a>(m_radius<span class="operator">,</span> (<span class="type"><a href="../qtcore/qtglobal.html#qreal-typedef">qreal</a></span>)radius); m_radius <span class="operator">=</span> radius; generateLensPixmap(); <span class="keyword">if</span> (<span class="operator">!</span>m_animated <span class="operator">|</span><span class="operator">|</span> m_radius <span class="operator"><</span> max) { <span class="preprocessor">#if QT_CONFIG(opengl)</span> <span class="keyword">if</span> (usesOpenGL()){ update(); <span class="keyword">return</span>; } <span class="preprocessor">#endif</span> update(circle_bounds(m_pos<span class="operator">,</span> max<span class="operator">,</span> m_fontSize)); } } <span class="type">void</span> PathDeformRenderer<span class="operator">::</span>setIntensity(<span class="type">int</span> intensity) { m_intensity <span class="operator">=</span> intensity; <span class="keyword">if</span> (<span class="operator">!</span>m_animated) { <span class="preprocessor">#if QT_CONFIG(opengl)</span> <span class="keyword">if</span> (usesOpenGL()) { update(); <span class="keyword">return</span>; } <span class="preprocessor">#endif</span> update(circle_bounds(m_pos<span class="operator">,</span> m_radius<span class="operator">,</span> m_fontSize)); } } </pre> </div> <!-- @@@painting/deform/pathdeform.cpp --> </div> </div> </div> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2019 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners.<br/> The documentation provided herein is licensed under the terms of the <a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation License version 1.3</a> as published by the Free Software Foundation.<br/> Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners. </p> </div> </body> </html>