<?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>pathstroke.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-pathstroke-example.html">Path Stroking</a></td><td >pathstroke.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">pathstroke.cpp Example File</h1> <span class="subtitle">painting/pathstroke/pathstroke.cpp</span> <!-- $$$painting/pathstroke/pathstroke.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 "arthurstyle.h"</span> <span class="preprocessor">#include "arthurwidgets.h"</span> <span class="preprocessor">#include "pathstroke.h"</span> <span class="preprocessor">#include <stdio.h></span> <span class="keyword">extern</span> <span class="type">void</span> draw_round_rect(<span class="type"><a href="../qtgui/qpainter.html">QPainter</a></span> <span class="operator">*</span>p<span class="operator">,</span> <span class="keyword">const</span> <span class="type"><a href="../qtcore/qrect.html">QRect</a></span> <span class="operator">&</span>bounds<span class="operator">,</span> <span class="type">int</span> radius); PathStrokeControls<span class="operator">::</span>PathStrokeControls(<span class="type"><a href="qwidget.html">QWidget</a></span><span class="operator">*</span> parent<span class="operator">,</span> PathStrokeRenderer<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) layoutForSmallScreens(); <span class="keyword">else</span> layoutForDesktop(); } <span class="type">void</span> PathStrokeControls<span class="operator">::</span>createCommonControls(<span class="type"><a href="qwidget.html">QWidget</a></span><span class="operator">*</span> parent) { m_capGroup <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qgroupbox.html">QGroupBox</a></span>(parent); m_capGroup<span class="operator">-</span><span class="operator">></span>setSizePolicy(<span class="type"><a href="qsizepolicy.html">QSizePolicy</a></span><span class="operator">::</span>Minimum<span class="operator">,</span> <span class="type"><a href="qsizepolicy.html">QSizePolicy</a></span><span class="operator">::</span>Fixed); <span class="type"><a href="qradiobutton.html">QRadioButton</a></span> <span class="operator">*</span>flatCap <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qradiobutton.html">QRadioButton</a></span>(m_capGroup); <span class="type"><a href="qradiobutton.html">QRadioButton</a></span> <span class="operator">*</span>squareCap <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qradiobutton.html">QRadioButton</a></span>(m_capGroup); <span class="type"><a href="qradiobutton.html">QRadioButton</a></span> <span class="operator">*</span>roundCap <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qradiobutton.html">QRadioButton</a></span>(m_capGroup); m_capGroup<span class="operator">-</span><span class="operator">></span>setTitle(tr(<span class="string">"Cap Style"</span>)); flatCap<span class="operator">-</span><span class="operator">></span>setText(tr(<span class="string">"Flat"</span>)); squareCap<span class="operator">-</span><span class="operator">></span>setText(tr(<span class="string">"Square"</span>)); roundCap<span class="operator">-</span><span class="operator">></span>setText(tr(<span class="string">"Round"</span>)); flatCap<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>Fixed); squareCap<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>Fixed); roundCap<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>Fixed); m_joinGroup <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qgroupbox.html">QGroupBox</a></span>(parent); m_joinGroup<span class="operator">-</span><span class="operator">></span>setSizePolicy(<span class="type"><a href="qsizepolicy.html">QSizePolicy</a></span><span class="operator">::</span>Minimum<span class="operator">,</span> <span class="type"><a href="qsizepolicy.html">QSizePolicy</a></span><span class="operator">::</span>Fixed); <span class="type"><a href="qradiobutton.html">QRadioButton</a></span> <span class="operator">*</span>bevelJoin <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qradiobutton.html">QRadioButton</a></span>(m_joinGroup); <span class="type"><a href="qradiobutton.html">QRadioButton</a></span> <span class="operator">*</span>miterJoin <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qradiobutton.html">QRadioButton</a></span>(m_joinGroup); <span class="type"><a href="qradiobutton.html">QRadioButton</a></span> <span class="operator">*</span>svgMiterJoin <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qradiobutton.html">QRadioButton</a></span>(m_joinGroup); <span class="type"><a href="qradiobutton.html">QRadioButton</a></span> <span class="operator">*</span>roundJoin <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qradiobutton.html">QRadioButton</a></span>(m_joinGroup); m_joinGroup<span class="operator">-</span><span class="operator">></span>setTitle(tr(<span class="string">"Join Style"</span>)); bevelJoin<span class="operator">-</span><span class="operator">></span>setText(tr(<span class="string">"Bevel"</span>)); miterJoin<span class="operator">-</span><span class="operator">></span>setText(tr(<span class="string">"Miter"</span>)); svgMiterJoin<span class="operator">-</span><span class="operator">></span>setText(tr(<span class="string">"SvgMiter"</span>)); roundJoin<span class="operator">-</span><span class="operator">></span>setText(tr(<span class="string">"Round"</span>)); m_styleGroup <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qgroupbox.html">QGroupBox</a></span>(parent); m_styleGroup<span class="operator">-</span><span class="operator">></span>setSizePolicy(<span class="type"><a href="qsizepolicy.html">QSizePolicy</a></span><span class="operator">::</span>Minimum<span class="operator">,</span> <span class="type"><a href="qsizepolicy.html">QSizePolicy</a></span><span class="operator">::</span>Fixed); <span class="type"><a href="qradiobutton.html">QRadioButton</a></span> <span class="operator">*</span>solidLine <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qradiobutton.html">QRadioButton</a></span>(m_styleGroup); <span class="type"><a href="qradiobutton.html">QRadioButton</a></span> <span class="operator">*</span>dashLine <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qradiobutton.html">QRadioButton</a></span>(m_styleGroup); <span class="type"><a href="qradiobutton.html">QRadioButton</a></span> <span class="operator">*</span>dotLine <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qradiobutton.html">QRadioButton</a></span>(m_styleGroup); <span class="type"><a href="qradiobutton.html">QRadioButton</a></span> <span class="operator">*</span>dashDotLine <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qradiobutton.html">QRadioButton</a></span>(m_styleGroup); <span class="type"><a href="qradiobutton.html">QRadioButton</a></span> <span class="operator">*</span>dashDotDotLine <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qradiobutton.html">QRadioButton</a></span>(m_styleGroup); <span class="type"><a href="qradiobutton.html">QRadioButton</a></span> <span class="operator">*</span>customDashLine <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qradiobutton.html">QRadioButton</a></span>(m_styleGroup); m_styleGroup<span class="operator">-</span><span class="operator">></span>setTitle(tr(<span class="string">"Pen Style"</span>)); <span class="type"><a href="../qtgui/qpixmap.html">QPixmap</a></span> line_solid(<span class="string">":res/images/line_solid.png"</span>); solidLine<span class="operator">-</span><span class="operator">></span>setIcon(line_solid); solidLine<span class="operator">-</span><span class="operator">></span>setIconSize(line_solid<span class="operator">.</span>size()); <span class="type"><a href="../qtgui/qpixmap.html">QPixmap</a></span> line_dashed(<span class="string">":res/images/line_dashed.png"</span>); dashLine<span class="operator">-</span><span class="operator">></span>setIcon(line_dashed); dashLine<span class="operator">-</span><span class="operator">></span>setIconSize(line_dashed<span class="operator">.</span>size()); <span class="type"><a href="../qtgui/qpixmap.html">QPixmap</a></span> line_dotted(<span class="string">":res/images/line_dotted.png"</span>); dotLine<span class="operator">-</span><span class="operator">></span>setIcon(line_dotted); dotLine<span class="operator">-</span><span class="operator">></span>setIconSize(line_dotted<span class="operator">.</span>size()); <span class="type"><a href="../qtgui/qpixmap.html">QPixmap</a></span> line_dash_dot(<span class="string">":res/images/line_dash_dot.png"</span>); dashDotLine<span class="operator">-</span><span class="operator">></span>setIcon(line_dash_dot); dashDotLine<span class="operator">-</span><span class="operator">></span>setIconSize(line_dash_dot<span class="operator">.</span>size()); <span class="type"><a href="../qtgui/qpixmap.html">QPixmap</a></span> line_dash_dot_dot(<span class="string">":res/images/line_dash_dot_dot.png"</span>); dashDotDotLine<span class="operator">-</span><span class="operator">></span>setIcon(line_dash_dot_dot); dashDotDotLine<span class="operator">-</span><span class="operator">></span>setIconSize(line_dash_dot_dot<span class="operator">.</span>size()); customDashLine<span class="operator">-</span><span class="operator">></span>setText(tr(<span class="string">"Custom"</span>)); <span class="type">int</span> fixedHeight <span class="operator">=</span> bevelJoin<span class="operator">-</span><span class="operator">></span>sizeHint()<span class="operator">.</span>height(); solidLine<span class="operator">-</span><span class="operator">></span>setFixedHeight(fixedHeight); dashLine<span class="operator">-</span><span class="operator">></span>setFixedHeight(fixedHeight); dotLine<span class="operator">-</span><span class="operator">></span>setFixedHeight(fixedHeight); dashDotLine<span class="operator">-</span><span class="operator">></span>setFixedHeight(fixedHeight); dashDotDotLine<span class="operator">-</span><span class="operator">></span>setFixedHeight(fixedHeight); m_pathModeGroup <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qgroupbox.html">QGroupBox</a></span>(parent); m_pathModeGroup<span class="operator">-</span><span class="operator">></span>setSizePolicy(<span class="type"><a href="qsizepolicy.html">QSizePolicy</a></span><span class="operator">::</span>Minimum<span class="operator">,</span> <span class="type"><a href="qsizepolicy.html">QSizePolicy</a></span><span class="operator">::</span>Fixed); <span class="type"><a href="qradiobutton.html">QRadioButton</a></span> <span class="operator">*</span>curveMode <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qradiobutton.html">QRadioButton</a></span>(m_pathModeGroup); <span class="type"><a href="qradiobutton.html">QRadioButton</a></span> <span class="operator">*</span>lineMode <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qradiobutton.html">QRadioButton</a></span>(m_pathModeGroup); m_pathModeGroup<span class="operator">-</span><span class="operator">></span>setTitle(tr(<span class="string">"Line Style"</span>)); curveMode<span class="operator">-</span><span class="operator">></span>setText(tr(<span class="string">"Curves"</span>)); lineMode<span class="operator">-</span><span class="operator">></span>setText(tr(<span class="string">"Lines"</span>)); <span class="comment">// Layouts</span> <span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span> <span class="operator">*</span>capGroupLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span>(m_capGroup); capGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(flatCap); capGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(squareCap); capGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(roundCap); <span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span> <span class="operator">*</span>joinGroupLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span>(m_joinGroup); joinGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(bevelJoin); joinGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(miterJoin); joinGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(svgMiterJoin); joinGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(roundJoin); <span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span> <span class="operator">*</span>styleGroupLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span>(m_styleGroup); styleGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(solidLine); styleGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(dashLine); styleGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(dotLine); styleGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(dashDotLine); styleGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(dashDotDotLine); styleGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(customDashLine); <span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span> <span class="operator">*</span>pathModeGroupLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span>(m_pathModeGroup); pathModeGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(curveMode); pathModeGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(lineMode); <span class="comment">// Connections</span> connect(flatCap<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> m_renderer<span class="operator">,</span> SLOT(setFlatCap())); connect(squareCap<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> m_renderer<span class="operator">,</span> SLOT(setSquareCap())); connect(roundCap<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> m_renderer<span class="operator">,</span> SLOT(setRoundCap())); connect(bevelJoin<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> m_renderer<span class="operator">,</span> SLOT(setBevelJoin())); connect(miterJoin<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> m_renderer<span class="operator">,</span> SLOT(setMiterJoin())); connect(svgMiterJoin<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> m_renderer<span class="operator">,</span> SLOT(setSvgMiterJoin())); connect(roundJoin<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> m_renderer<span class="operator">,</span> SLOT(setRoundJoin())); connect(curveMode<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> m_renderer<span class="operator">,</span> SLOT(setCurveMode())); connect(lineMode<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> m_renderer<span class="operator">,</span> SLOT(setLineMode())); connect(solidLine<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> m_renderer<span class="operator">,</span> SLOT(setSolidLine())); connect(dashLine<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> m_renderer<span class="operator">,</span> SLOT(setDashLine())); connect(dotLine<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> m_renderer<span class="operator">,</span> SLOT(setDotLine())); connect(dashDotLine<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> m_renderer<span class="operator">,</span> SLOT(setDashDotLine())); connect(dashDotDotLine<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> m_renderer<span class="operator">,</span> SLOT(setDashDotDotLine())); connect(customDashLine<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> m_renderer<span class="operator">,</span> SLOT(setCustomDashLine())); <span class="comment">// Set the defaults:</span> flatCap<span class="operator">-</span><span class="operator">></span>setChecked(<span class="keyword">true</span>); bevelJoin<span class="operator">-</span><span class="operator">></span>setChecked(<span class="keyword">true</span>); curveMode<span class="operator">-</span><span class="operator">></span>setChecked(<span class="keyword">true</span>); solidLine<span class="operator">-</span><span class="operator">></span>setChecked(<span class="keyword">true</span>); } <span class="type">void</span> PathStrokeControls<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>setFixedWidth(<span class="number">180</span>); mainGroup<span class="operator">-</span><span class="operator">></span>setTitle(tr(<span class="string">"Path Stroking"</span>)); createCommonControls(mainGroup); <span class="type"><a href="qgroupbox.html">QGroupBox</a></span><span class="operator">*</span> penWidthGroup <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qgroupbox.html">QGroupBox</a></span>(mainGroup); <span class="type"><a href="qslider.html">QSlider</a></span> <span class="operator">*</span>penWidth <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> penWidthGroup); penWidth<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); penWidthGroup<span class="operator">-</span><span class="operator">></span>setTitle(tr(<span class="string">"Pen Width"</span>)); penWidth<span class="operator">-</span><span class="operator">></span>setRange(<span class="number">0</span><span class="operator">,</span> <span class="number">500</span>); <span class="type"><a href="qpushbutton.html">QPushButton</a></span> <span class="operator">*</span>animated <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qpushbutton.html">QPushButton</a></span>(mainGroup); animated<span class="operator">-</span><span class="operator">></span>setText(tr(<span class="string">"Animate"</span>)); animated<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>); <span class="comment">// Layouts:</span> <span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span> <span class="operator">*</span>penWidthLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span>(penWidthGroup); penWidthLayout<span class="operator">-</span><span class="operator">></span>addWidget(penWidth); <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>setMargin(<span class="number">0</span>); mainLayout<span class="operator">-</span><span class="operator">></span>addWidget(mainGroup); <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>setMargin(<span class="number">3</span>); mainGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(m_capGroup); mainGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(m_joinGroup); mainGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(m_styleGroup); mainGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(penWidthGroup); mainGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(m_pathModeGroup); mainGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(animated); mainGroupLayout<span class="operator">-</span><span class="operator">></span>addStretch(<span class="number">1</span>); mainGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(showSourceButton); <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(whatsThisButton); <span class="comment">// Set up connections</span> connect(animated<span class="operator">,</span> SIGNAL(toggled(bool))<span class="operator">,</span> m_renderer<span class="operator">,</span> SLOT(setAnimation(bool))); connect(penWidth<span class="operator">,</span> SIGNAL(valueChanged(<span class="type">int</span>))<span class="operator">,</span> m_renderer<span class="operator">,</span> SLOT(setPenWidth(<span class="type">int</span>))); connect(showSourceButton<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> m_renderer<span class="operator">,</span> SLOT(showSource())); <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(whatsThisButton<span class="operator">,</span> SIGNAL(clicked(bool))<span class="operator">,</span> m_renderer<span class="operator">,</span> SLOT(setDescriptionEnabled(bool))); connect(m_renderer<span class="operator">,</span> SIGNAL(descriptionEnabledChanged(bool))<span class="operator">,</span> whatsThisButton<span class="operator">,</span> SLOT(setChecked(bool))); <span class="comment">// Set the defaults</span> animated<span class="operator">-</span><span class="operator">></span>setChecked(<span class="keyword">true</span>); penWidth<span class="operator">-</span><span class="operator">></span>setValue(<span class="number">50</span>); } <span class="type">void</span> PathStrokeControls<span class="operator">::</span>layoutForSmallScreens() { createCommonControls(<span class="keyword">this</span>); m_capGroup<span class="operator">-</span><span class="operator">></span>layout()<span class="operator">-</span><span class="operator">></span>setMargin(<span class="number">0</span>); m_joinGroup<span class="operator">-</span><span class="operator">></span>layout()<span class="operator">-</span><span class="operator">></span>setMargin(<span class="number">0</span>); m_styleGroup<span class="operator">-</span><span class="operator">></span>layout()<span class="operator">-</span><span class="operator">></span>setMargin(<span class="number">0</span>); m_pathModeGroup<span class="operator">-</span><span class="operator">></span>layout()<span class="operator">-</span><span class="operator">></span>setMargin(<span class="number">0</span>); <span class="type"><a href="qpushbutton.html">QPushButton</a></span><span class="operator">*</span> okBtn <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> <span class="keyword">this</span>); okBtn<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>Fixed); okBtn<span class="operator">-</span><span class="operator">></span>setMinimumSize(<span class="number">100</span><span class="operator">,</span>okBtn<span class="operator">-</span><span class="operator">></span>minimumSize()<span class="operator">.</span>height()); <span class="type"><a href="qpushbutton.html">QPushButton</a></span><span class="operator">*</span> quitBtn <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> <span class="keyword">this</span>); quitBtn<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>Fixed); quitBtn<span class="operator">-</span><span class="operator">></span>setMinimumSize(<span class="number">100</span><span class="operator">,</span> okBtn<span class="operator">-</span><span class="operator">></span>minimumSize()<span class="operator">.</span>height()); <span class="type"><a href="qlabel.html">QLabel</a></span> <span class="operator">*</span>penWidthLabel <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qlabel.html">QLabel</a></span>(tr(<span class="string">" Width:"</span>)); <span class="type"><a href="qslider.html">QSlider</a></span> <span class="operator">*</span>penWidth <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> <span class="keyword">this</span>); penWidth<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); penWidth<span class="operator">-</span><span class="operator">></span>setRange(<span class="number">0</span><span class="operator">,</span> <span class="number">500</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>(<span class="keyword">this</span>); 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="comment">// Layouts:</span> <span class="type"><a href="qhboxlayout.html">QHBoxLayout</a></span> <span class="operator">*</span>penWidthLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qhboxlayout.html">QHBoxLayout</a></span>(<span class="number">0</span>); penWidthLayout<span class="operator">-</span><span class="operator">></span>addWidget(penWidthLabel<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); penWidthLayout<span class="operator">-</span><span class="operator">></span>addWidget(penWidth); <span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span> <span class="operator">*</span>leftLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span>(<span class="number">0</span>); leftLayout<span class="operator">-</span><span class="operator">></span>addWidget(m_capGroup); leftLayout<span class="operator">-</span><span class="operator">></span>addWidget(m_joinGroup); <span class="preprocessor">#if QT_CONFIG(opengl)</span> leftLayout<span class="operator">-</span><span class="operator">></span>addWidget(enableOpenGLButton); <span class="preprocessor">#endif</span> leftLayout<span class="operator">-</span><span class="operator">></span>addLayout(penWidthLayout); <span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span> <span class="operator">*</span>rightLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span>(<span class="number">0</span>); rightLayout<span class="operator">-</span><span class="operator">></span>addWidget(m_styleGroup); rightLayout<span class="operator">-</span><span class="operator">></span>addWidget(m_pathModeGroup); <span class="type"><a href="qgridlayout.html">QGridLayout</a></span> <span class="operator">*</span>mainLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qgridlayout.html">QGridLayout</a></span>(<span class="keyword">this</span>); mainLayout<span class="operator">-</span><span class="operator">></span>setMargin(<span class="number">0</span>); <span class="comment">// Add spacers around the form items so we don't look stupid at higher resolutions</span> mainLayout<span class="operator">-</span><span class="operator">></span>addItem(<span class="keyword">new</span> <span class="type"><a href="qspaceritem.html">QSpacerItem</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><span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">4</span>); mainLayout<span class="operator">-</span><span class="operator">></span>addItem(<span class="keyword">new</span> <span class="type"><a href="qspaceritem.html">QSpacerItem</a></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="number">0</span><span class="operator">,</span> <span class="number">2</span><span class="operator">,</span> <span class="number">1</span>); mainLayout<span class="operator">-</span><span class="operator">></span>addItem(<span class="keyword">new</span> <span class="type"><a href="qspaceritem.html">QSpacerItem</a></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="number">3</span><span class="operator">,</span> <span class="number">2</span><span class="operator">,</span> <span class="number">1</span>); mainLayout<span class="operator">-</span><span class="operator">></span>addItem(<span class="keyword">new</span> <span class="type"><a href="qspaceritem.html">QSpacerItem</a></span>(<span class="number">0</span><span class="operator">,</span><span class="number">0</span>)<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">4</span>); mainLayout<span class="operator">-</span><span class="operator">></span>addLayout(leftLayout<span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">1</span>); mainLayout<span class="operator">-</span><span class="operator">></span>addLayout(rightLayout<span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">2</span>); mainLayout<span class="operator">-</span><span class="operator">></span>addWidget(quitBtn<span class="operator">,</span> <span class="number">2</span><span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>AlignHCenter <span class="operator">|</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>AlignTop); mainLayout<span class="operator">-</span><span class="operator">></span>addWidget(okBtn<span class="operator">,</span> <span class="number">2</span><span class="operator">,</span> <span class="number">2</span><span class="operator">,</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>AlignHCenter <span class="operator">|</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>AlignTop); <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(penWidth<span class="operator">,</span> SIGNAL(valueChanged(<span class="type">int</span>))<span class="operator">,</span> m_renderer<span class="operator">,</span> SLOT(setPenWidth(<span class="type">int</span>))); connect(quitBtn<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(emitQuitSignal())); connect(okBtn<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(emitOkSignal())); m_renderer<span class="operator">-</span><span class="operator">></span>setAnimation(<span class="keyword">true</span>); penWidth<span class="operator">-</span><span class="operator">></span>setValue(<span class="number">50</span>); } <span class="type">void</span> PathStrokeControls<span class="operator">::</span>emitQuitSignal() { <span class="keyword">emit</span> quitPressed(); } <span class="type">void</span> PathStrokeControls<span class="operator">::</span>emitOkSignal() { <span class="keyword">emit</span> okPressed(); } PathStrokeWidget<span class="operator">::</span>PathStrokeWidget(bool smallScreen) { setWindowTitle(tr(<span class="string">"Path Stroking"</span>)); <span class="comment">// Widget construction and property setting</span> m_renderer <span class="operator">=</span> <span class="keyword">new</span> PathStrokeRenderer(<span class="keyword">this</span><span class="operator">,</span> smallScreen); m_controls <span class="operator">=</span> <span class="keyword">new</span> PathStrokeControls(<span class="number">0</span><span class="operator">,</span> m_renderer<span class="operator">,</span> smallScreen); <span class="comment">// Layouting</span> <span class="type"><a href="qhboxlayout.html">QHBoxLayout</a></span> <span class="operator">*</span>viewLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qhboxlayout.html">QHBoxLayout</a></span>(<span class="keyword">this</span>); viewLayout<span class="operator">-</span><span class="operator">></span>addWidget(m_renderer); <span class="keyword">if</span> (<span class="operator">!</span>smallScreen) viewLayout<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/pathstroke/pathstroke.cpp"</span>); m_renderer<span class="operator">-</span><span class="operator">></span>loadDescription(<span class="string">":res/pathstroke/pathstroke.html"</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="qapplication.html">QApplication</a></span><span class="operator">::</span>instance()<span class="operator">,</span> SLOT(quit())); } <span class="type">void</span> PathStrokeWidget<span class="operator">::</span>showControls() { m_controls<span class="operator">-</span><span class="operator">></span>showFullScreen(); } <span class="type">void</span> PathStrokeWidget<span class="operator">::</span>hideControls() { m_controls<span class="operator">-</span><span class="operator">></span>hide(); } <span class="type">void</span> PathStrokeWidget<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>) { 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); } } PathStrokeRenderer<span class="operator">::</span>PathStrokeRenderer(<span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>parent<span class="operator">,</span> bool smallScreen) : ArthurFrame(parent) { m_smallScreen <span class="operator">=</span> smallScreen; m_pointSize <span class="operator">=</span> <span class="number">10</span>; m_activePoint <span class="operator">=</span> <span class="operator">-</span><span class="number">1</span>; m_capStyle <span class="operator">=</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>FlatCap; m_joinStyle <span class="operator">=</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>BevelJoin; m_pathMode <span class="operator">=</span> CurveMode; m_penWidth <span class="operator">=</span> <span class="number">1</span>; m_penStyle <span class="operator">=</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>SolidLine; m_wasAnimated <span class="operator">=</span> <span class="keyword">true</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); setAttribute(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>WA_AcceptTouchEvents); } <span class="type">void</span> PathStrokeRenderer<span class="operator">::</span>paint(<span class="type"><a href="../qtgui/qpainter.html">QPainter</a></span> <span class="operator">*</span>painter) { <span class="keyword">if</span> (m_points<span class="operator">.</span>isEmpty()) initializePoints(); painter<span class="operator">-</span><span class="operator">></span>setRenderHint(<span class="type"><a href="../qtgui/qpainter.html">QPainter</a></span><span class="operator">::</span>Antialiasing); <span class="type"><a href="../qtgui/qpalette.html">QPalette</a></span> pal <span class="operator">=</span> palette(); 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); <span class="comment">// Construct the path</span> <span class="type"><a href="../qtgui/qpainterpath.html">QPainterPath</a></span> path; path<span class="operator">.</span>moveTo(m_points<span class="operator">.</span>at(<span class="number">0</span>)); <span class="keyword">if</span> (m_pathMode <span class="operator">=</span><span class="operator">=</span> LineMode) { <span class="keyword">for</span> (<span class="type">int</span> i<span class="operator">=</span><span class="number">1</span>; i<span class="operator"><</span>m_points<span class="operator">.</span>size(); <span class="operator">+</span><span class="operator">+</span>i) path<span class="operator">.</span>lineTo(m_points<span class="operator">.</span>at(i)); } <span class="keyword">else</span> { <span class="type">int</span> i<span class="operator">=</span><span class="number">1</span>; <span class="keyword">while</span> (i <span class="operator">+</span> <span class="number">2</span> <span class="operator"><</span> m_points<span class="operator">.</span>size()) { path<span class="operator">.</span>cubicTo(m_points<span class="operator">.</span>at(i)<span class="operator">,</span> m_points<span class="operator">.</span>at(i<span class="operator">+</span><span class="number">1</span>)<span class="operator">,</span> m_points<span class="operator">.</span>at(i<span class="operator">+</span><span class="number">2</span>)); i <span class="operator">+</span><span class="operator">=</span> <span class="number">3</span>; } <span class="keyword">while</span> (i <span class="operator"><</span> m_points<span class="operator">.</span>size()) { path<span class="operator">.</span>lineTo(m_points<span class="operator">.</span>at(i)); <span class="operator">+</span><span class="operator">+</span>i; } } <span class="comment">// Draw the path</span> { <span class="type"><a href="../qtgui/qcolor.html">QColor</a></span> lg <span class="operator">=</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>red; <span class="comment">// The "custom" pen</span> <span class="keyword">if</span> (m_penStyle <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>NoPen) { <span class="type"><a href="../qtgui/qpainterpathstroker.html">QPainterPathStroker</a></span> stroker; stroker<span class="operator">.</span>setWidth(m_penWidth); stroker<span class="operator">.</span>setJoinStyle(m_joinStyle); stroker<span class="operator">.</span>setCapStyle(m_capStyle); <span class="type"><a href="../qtcore/qvector.html">QVector</a></span><span class="operator"><</span><span class="type"><a href="../qtcore/qtglobal.html#qreal-typedef">qreal</a></span><span class="operator">></span> dashes; <span class="type"><a href="../qtcore/qtglobal.html#qreal-typedef">qreal</a></span> space <span class="operator">=</span> <span class="number">4</span>; dashes <span class="operator"><</span><span class="operator"><</span> <span class="number">1</span> <span class="operator"><</span><span class="operator"><</span> space <span class="operator"><</span><span class="operator"><</span> <span class="number">3</span> <span class="operator"><</span><span class="operator"><</span> space <span class="operator"><</span><span class="operator"><</span> <span class="number">9</span> <span class="operator"><</span><span class="operator"><</span> space <span class="operator"><</span><span class="operator"><</span> <span class="number">27</span> <span class="operator"><</span><span class="operator"><</span> space <span class="operator"><</span><span class="operator"><</span> <span class="number">9</span> <span class="operator"><</span><span class="operator"><</span> space <span class="operator"><</span><span class="operator"><</span> <span class="number">3</span> <span class="operator"><</span><span class="operator"><</span> space; stroker<span class="operator">.</span>setDashPattern(dashes); <span class="type"><a href="../qtgui/qpainterpath.html">QPainterPath</a></span> stroke <span class="operator">=</span> stroker<span class="operator">.</span>createStroke(path); painter<span class="operator">-</span><span class="operator">></span>fillPath(stroke<span class="operator">,</span> lg); } <span class="keyword">else</span> { <span class="type"><a href="../qtgui/qpen.html">QPen</a></span> pen(lg<span class="operator">,</span> m_penWidth<span class="operator">,</span> m_penStyle<span class="operator">,</span> m_capStyle<span class="operator">,</span> m_joinStyle); painter<span class="operator">-</span><span class="operator">></span>strokePath(path<span class="operator">,</span> pen); } } <span class="keyword">if</span> (<span class="number">1</span>) { <span class="comment">// Draw the control points</span> painter<span class="operator">-</span><span class="operator">></span>setPen(<span class="type"><a href="../qtgui/qcolor.html">QColor</a></span>(<span class="number">50</span><span class="operator">,</span> <span class="number">100</span><span class="operator">,</span> <span class="number">120</span><span class="operator">,</span> <span class="number">200</span>)); painter<span class="operator">-</span><span class="operator">></span>setBrush(<span class="type"><a href="../qtgui/qcolor.html">QColor</a></span>(<span class="number">200</span><span class="operator">,</span> <span class="number">200</span><span class="operator">,</span> <span class="number">210</span><span class="operator">,</span> <span class="number">120</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>m_points<span class="operator">.</span>size(); <span class="operator">+</span><span class="operator">+</span>i) { <span class="type"><a href="../qtcore/qpointf.html">QPointF</a></span> pos <span class="operator">=</span> m_points<span class="operator">.</span>at(i); painter<span class="operator">-</span><span class="operator">></span>drawEllipse(<span class="type"><a href="../qtcore/qrectf.html">QRectF</a></span>(pos<span class="operator">.</span>x() <span class="operator">-</span> m_pointSize<span class="operator">,</span> pos<span class="operator">.</span>y() <span class="operator">-</span> m_pointSize<span class="operator">,</span> m_pointSize<span class="operator">*</span><span class="number">2</span><span class="operator">,</span> m_pointSize<span class="operator">*</span><span class="number">2</span>)); } painter<span class="operator">-</span><span class="operator">></span>setPen(<span class="type"><a href="../qtgui/qpen.html">QPen</a></span>(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>lightGray<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>SolidLine)); 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>NoBrush); painter<span class="operator">-</span><span class="operator">></span>drawPolyline(m_points); } } <span class="type">void</span> PathStrokeRenderer<span class="operator">::</span>initializePoints() { <span class="keyword">const</span> <span class="type">int</span> count <span class="operator">=</span> <span class="number">7</span>; m_points<span class="operator">.</span>clear(); m_vectors<span class="operator">.</span>clear(); <span class="type"><a href="../qtgui/qmatrix.html">QMatrix</a></span> m; <span class="type"><a href="../qtcore/qtglobal.html#qreal-typedef">qreal</a></span> rot <span class="operator">=</span> <span class="number">360.0</span> <span class="operator">/</span> count; <span class="type"><a href="../qtcore/qpointf.html">QPointF</a></span> center(width() <span class="operator">/</span> <span class="number">2</span><span class="operator">,</span> height() <span class="operator">/</span> <span class="number">2</span>); <span class="type"><a href="../qtgui/qmatrix.html">QMatrix</a></span> vm; vm<span class="operator">.</span>shear(<span class="number">2</span><span class="operator">,</span> <span class="operator">-</span><span class="number">1</span>); vm<span class="operator">.</span>scale(<span class="number">3</span><span class="operator">,</span> <span class="number">3</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>count; <span class="operator">+</span><span class="operator">+</span>i) { m_vectors <span class="operator"><</span><span class="operator"><</span> <span class="type"><a href="../qtcore/qpointf.html">QPointF</a></span>(<span class="operator">.</span><span class="number">1f</span><span class="operator">,</span> <span class="operator">.</span><span class="number">25f</span>) <span class="operator">*</span> (m <span class="operator">*</span> vm); m_points <span class="operator"><</span><span class="operator"><</span> <span class="type"><a href="../qtcore/qpointf.html">QPointF</a></span>(<span class="number">0</span><span class="operator">,</span> <span class="number">100</span>) <span class="operator">*</span> m <span class="operator">+</span> center; m<span class="operator">.</span>rotate(rot); } } <span class="type">void</span> PathStrokeRenderer<span class="operator">::</span>updatePoints() { <span class="type"><a href="../qtcore/qtglobal.html#qreal-typedef">qreal</a></span> pad <span class="operator">=</span> <span class="number">10</span>; <span class="type"><a href="../qtcore/qtglobal.html#qreal-typedef">qreal</a></span> left <span class="operator">=</span> pad; <span class="type"><a href="../qtcore/qtglobal.html#qreal-typedef">qreal</a></span> right <span class="operator">=</span> width() <span class="operator">-</span> pad; <span class="type"><a href="../qtcore/qtglobal.html#qreal-typedef">qreal</a></span> top <span class="operator">=</span> pad; <span class="type"><a href="../qtcore/qtglobal.html#qreal-typedef">qreal</a></span> bottom <span class="operator">=</span> height() <span class="operator">-</span> pad; Q_ASSERT(m_points<span class="operator">.</span>size() <span class="operator">=</span><span class="operator">=</span> m_vectors<span class="operator">.</span>size()); <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_points<span class="operator">.</span>size(); <span class="operator">+</span><span class="operator">+</span>i) { <span class="type"><a href="../qtcore/qpointf.html">QPointF</a></span> pos <span class="operator">=</span> m_points<span class="operator">.</span>at(i); <span class="type"><a href="../qtcore/qpointf.html">QPointF</a></span> vec <span class="operator">=</span> m_vectors<span class="operator">.</span>at(i); pos <span class="operator">+</span><span class="operator">=</span> vec; <span class="keyword">if</span> (pos<span class="operator">.</span>x() <span class="operator"><</span> left <span class="operator">|</span><span class="operator">|</span> pos<span class="operator">.</span>x() <span class="operator">></span> right) { vec<span class="operator">.</span>setX(<span class="operator">-</span>vec<span class="operator">.</span>x()); pos<span class="operator">.</span>setX(pos<span class="operator">.</span>x() <span class="operator"><</span> left <span class="operator">?</span> left : right); } <span class="keyword">if</span> (pos<span class="operator">.</span>y() <span class="operator"><</span> top <span class="operator">|</span><span class="operator">|</span> pos<span class="operator">.</span>y() <span class="operator">></span> bottom) { vec<span class="operator">.</span>setY(<span class="operator">-</span>vec<span class="operator">.</span>y()); pos<span class="operator">.</span>setY(pos<span class="operator">.</span>y() <span class="operator"><</span> top <span class="operator">?</span> top : bottom); } m_points<span class="operator">[</span>i<span class="operator">]</span> <span class="operator">=</span> pos; m_vectors<span class="operator">[</span>i<span class="operator">]</span> <span class="operator">=</span> vec; } update(); } <span class="type">void</span> PathStrokeRenderer<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> (<span class="operator">!</span>m_fingerPointMapping<span class="operator">.</span>isEmpty()) <span class="keyword">return</span>; setDescriptionEnabled(<span class="keyword">false</span>); m_activePoint <span class="operator">=</span> <span class="operator">-</span><span class="number">1</span>; <span class="type"><a href="../qtcore/qtglobal.html#qreal-typedef">qreal</a></span> distance <span class="operator">=</span> <span class="operator">-</span><span class="number">1</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>m_points<span class="operator">.</span>size(); <span class="operator">+</span><span class="operator">+</span>i) { <span class="type"><a href="../qtcore/qtglobal.html#qreal-typedef">qreal</a></span> d <span class="operator">=</span> <span class="type"><a href="../qtcore/qlinef.html">QLineF</a></span>(e<span class="operator">-</span><span class="operator">></span>pos()<span class="operator">,</span> m_points<span class="operator">.</span>at(i))<span class="operator">.</span>length(); <span class="keyword">if</span> ((distance <span class="operator"><</span> <span class="number">0</span> <span class="operator">&</span><span class="operator">&</span> d <span class="operator"><</span> <span class="number">8</span> <span class="operator">*</span> m_pointSize) <span class="operator">|</span><span class="operator">|</span> d <span class="operator"><</span> distance) { distance <span class="operator">=</span> d; m_activePoint <span class="operator">=</span> i; } } <span class="keyword">if</span> (m_activePoint <span class="operator">!</span><span class="operator">=</span> <span class="operator">-</span><span class="number">1</span>) { m_wasAnimated <span class="operator">=</span> m_timer<span class="operator">.</span>isActive(); setAnimation(<span class="keyword">false</span>); mouseMoveEvent(e); } <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; m_mousePress <span class="operator">=</span> e<span class="operator">-</span><span class="operator">></span>pos(); } <span class="type">void</span> PathStrokeRenderer<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_fingerPointMapping<span class="operator">.</span>isEmpty()) <span class="keyword">return</span>; <span class="comment">// If we've moved more then 25 pixels, assume user is dragging</span> <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/qpoint.html">QPoint</a></span>(m_mousePress <span class="operator">-</span> e<span class="operator">-</span><span class="operator">></span>pos())<span class="operator">.</span>manhattanLength() <span class="operator">></span> <span class="number">25</span>) m_mouseDrag <span class="operator">=</span> <span class="keyword">true</span>; <span class="keyword">if</span> (m_mouseDrag <span class="operator">&</span><span class="operator">&</span> m_activePoint <span class="operator">></span><span class="operator">=</span> <span class="number">0</span> <span class="operator">&</span><span class="operator">&</span> m_activePoint <span class="operator"><</span> m_points<span class="operator">.</span>size()) { m_points<span class="operator">[</span>m_activePoint<span class="operator">]</span> <span class="operator">=</span> e<span class="operator">-</span><span class="operator">></span>pos(); update(); } } <span class="type">void</span> PathStrokeRenderer<span class="operator">::</span>mouseReleaseEvent(<span class="type"><a href="../qtgui/qmouseevent.html">QMouseEvent</a></span> <span class="operator">*</span>) { <span class="keyword">if</span> (<span class="operator">!</span>m_fingerPointMapping<span class="operator">.</span>isEmpty()) <span class="keyword">return</span>; m_activePoint <span class="operator">=</span> <span class="operator">-</span><span class="number">1</span>; setAnimation(m_wasAnimated); <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> PathStrokeRenderer<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_timer<span class="operator">.</span>timerId()) { updatePoints(); } <span class="comment">// else if (e->timerId() == m_fpsTimer.timerId()) {</span> <span class="comment">// emit frameRate(m_frameCount);</span> <span class="comment">// m_frameCount = 0;</span> <span class="comment">// }</span> } bool PathStrokeRenderer<span class="operator">::</span>event(<span class="type"><a href="../qtcore/qevent.html">QEvent</a></span> <span class="operator">*</span>e) { bool touchBegin <span class="operator">=</span> <span class="keyword">false</span>; <span class="keyword">switch</span> (e<span class="operator">-</span><span class="operator">></span>type()) { <span class="keyword">case</span> <span class="type"><a href="../qtcore/qevent.html">QEvent</a></span><span class="operator">::</span>TouchBegin: touchBegin <span class="operator">=</span> <span class="keyword">true</span>; Q_FALLTHROUGH(); <span class="keyword">case</span> <span class="type"><a href="../qtcore/qevent.html">QEvent</a></span><span class="operator">::</span>TouchUpdate: { <span class="keyword">const</span> <span class="type"><a href="../qtgui/qtouchevent.html">QTouchEvent</a></span> <span class="operator">*</span><span class="keyword">const</span> event <span class="operator">=</span> <span class="keyword">static_cast</span><span class="operator"><</span><span class="keyword">const</span> <span class="type"><a href="../qtgui/qtouchevent.html">QTouchEvent</a></span><span class="operator">*</span><span class="operator">></span>(e); <span class="keyword">const</span> <span class="type"><a href="../qtcore/qlist.html">QList</a></span><span class="operator"><</span><span class="type"><a href="../qtgui/qtouchevent.html">QTouchEvent</a></span><span class="operator">::</span>TouchPoint<span class="operator">></span> points <span class="operator">=</span> event<span class="operator">-</span><span class="operator">></span>touchPoints(); foreach (<span class="keyword">const</span> <span class="type"><a href="../qtgui/qtouchevent.html">QTouchEvent</a></span><span class="operator">::</span>TouchPoint <span class="operator">&</span>touchPoint<span class="operator">,</span> points) { <span class="keyword">const</span> <span class="type">int</span> id <span class="operator">=</span> touchPoint<span class="operator">.</span>id(); <span class="keyword">switch</span> (touchPoint<span class="operator">.</span>state()) { <span class="keyword">case</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>TouchPointPressed: { <span class="comment">// find the point, move it</span> <span class="type"><a href="../qtcore/qset.html">QSet</a></span><span class="operator"><</span><span class="type">int</span><span class="operator">></span> activePoints <span class="operator">=</span> <span class="type"><a href="../qtcore/qset.html">QSet</a></span><span class="operator"><</span><span class="type">int</span><span class="operator">></span><span class="operator">::</span>fromList(m_fingerPointMapping<span class="operator">.</span>values()); <span class="type">int</span> activePoint <span class="operator">=</span> <span class="operator">-</span><span class="number">1</span>; <span class="type"><a href="../qtcore/qtglobal.html#qreal-typedef">qreal</a></span> distance <span class="operator">=</span> <span class="operator">-</span><span class="number">1</span>; <span class="keyword">const</span> <span class="type">int</span> pointsCount <span class="operator">=</span> m_points<span class="operator">.</span>size(); <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>pointsCount; <span class="operator">+</span><span class="operator">+</span>i) { <span class="keyword">if</span> (activePoints<span class="operator">.</span>contains(i)) <span class="keyword">continue</span>; <span class="type"><a href="../qtcore/qtglobal.html#qreal-typedef">qreal</a></span> d <span class="operator">=</span> <span class="type"><a href="../qtcore/qlinef.html">QLineF</a></span>(touchPoint<span class="operator">.</span>pos()<span class="operator">,</span> m_points<span class="operator">.</span>at(i))<span class="operator">.</span>length(); <span class="keyword">if</span> ((distance <span class="operator"><</span> <span class="number">0</span> <span class="operator">&</span><span class="operator">&</span> d <span class="operator"><</span> <span class="number">12</span> <span class="operator">*</span> m_pointSize) <span class="operator">|</span><span class="operator">|</span> d <span class="operator"><</span> distance) { distance <span class="operator">=</span> d; activePoint <span class="operator">=</span> i; } } <span class="keyword">if</span> (activePoint <span class="operator">!</span><span class="operator">=</span> <span class="operator">-</span><span class="number">1</span>) { m_fingerPointMapping<span class="operator">.</span>insert(touchPoint<span class="operator">.</span>id()<span class="operator">,</span> activePoint); m_points<span class="operator">[</span>activePoint<span class="operator">]</span> <span class="operator">=</span> touchPoint<span class="operator">.</span>pos(); } <span class="keyword">break</span>; } <span class="keyword">case</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>TouchPointReleased: { <span class="comment">// move the point and release</span> <span class="type"><a href="../qtcore/qhash.html">QHash</a></span><span class="operator"><</span><span class="type">int</span><span class="operator">,</span><span class="type">int</span><span class="operator">></span><span class="operator">::</span>iterator it <span class="operator">=</span> m_fingerPointMapping<span class="operator">.</span>find(id); m_points<span class="operator">[</span>it<span class="operator">.</span>value()<span class="operator">]</span> <span class="operator">=</span> touchPoint<span class="operator">.</span>pos(); m_fingerPointMapping<span class="operator">.</span>erase(it); <span class="keyword">break</span>; } <span class="keyword">case</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>TouchPointMoved: { <span class="comment">// move the point</span> <span class="keyword">const</span> <span class="type">int</span> pointIdx <span class="operator">=</span> m_fingerPointMapping<span class="operator">.</span>value(id<span class="operator">,</span> <span class="operator">-</span><span class="number">1</span>); <span class="keyword">if</span> (pointIdx <span class="operator">></span><span class="operator">=</span> <span class="number">0</span>) m_points<span class="operator">[</span>pointIdx<span class="operator">]</span> <span class="operator">=</span> touchPoint<span class="operator">.</span>pos(); <span class="keyword">break</span>; } <span class="keyword">default</span>: <span class="keyword">break</span>; } } <span class="keyword">if</span> (m_fingerPointMapping<span class="operator">.</span>isEmpty()) { e<span class="operator">-</span><span class="operator">></span>ignore(); <span class="keyword">return</span> <span class="keyword">false</span>; } <span class="keyword">else</span> { <span class="keyword">if</span> (touchBegin) { m_wasAnimated <span class="operator">=</span> m_timer<span class="operator">.</span>isActive(); setAnimation(<span class="keyword">false</span>); } update(); <span class="keyword">return</span> <span class="keyword">true</span>; } } <span class="keyword">break</span>; <span class="keyword">case</span> <span class="type"><a href="../qtcore/qevent.html">QEvent</a></span><span class="operator">::</span>TouchEnd: <span class="keyword">if</span> (m_fingerPointMapping<span class="operator">.</span>isEmpty()) { e<span class="operator">-</span><span class="operator">></span>ignore(); <span class="keyword">return</span> <span class="keyword">false</span>; } m_fingerPointMapping<span class="operator">.</span>clear(); setAnimation(m_wasAnimated); <span class="keyword">return</span> <span class="keyword">true</span>; <span class="keyword">break</span>; <span class="keyword">default</span>: <span class="keyword">break</span>; } <span class="keyword">return</span> <span class="type"><a href="qwidget.html">QWidget</a></span><span class="operator">::</span>event(e); } <span class="type">void</span> PathStrokeRenderer<span class="operator">::</span>setAnimation(bool animation) { m_timer<span class="operator">.</span>stop(); <span class="comment">// m_fpsTimer.stop();</span> <span class="keyword">if</span> (animation) { m_timer<span class="operator">.</span>start(<span class="number">25</span><span class="operator">,</span> <span class="keyword">this</span>); <span class="comment">// m_fpsTimer.start(1000, this);</span> <span class="comment">// m_frameCount = 0;</span> } } </pre> </div> <!-- @@@painting/pathstroke/pathstroke.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>