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<h1 class="title">pathstroke.cpp Example File</h1>
<span class="small-subtitle">demos/pathstroke/pathstroke.cpp</span>
<!-- $$$demos/pathstroke/pathstroke.cpp-description -->
<div class="descr"> <a name="details"></a>
<pre class="cpp"> <span class="comment">/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the demonstration applications of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/</span>
<span class="preprocessor">#include "pathstroke.h"</span>
<span class="preprocessor">#include "arthurstyle.h"</span>
<span class="preprocessor">#include "arthurwidgets.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="qpainter.html">QPainter</a></span> <span class="operator">*</span>p<span class="operator">,</span> <span class="keyword">const</span> <span class="type"><a href="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> <span class="type">bool</span> 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>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>));
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="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="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="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="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="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(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(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="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">#ifdef QT_OPENGL_SUPPORT</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="keyword">if</span> (<span class="operator">!</span><span class="type"><a href="qglformat.html">QGLFormat</a></span><span class="operator">::</span>hasOpenGL())
enableOpenGLButton<span class="operator">-</span><span class="operator">></span>hide();
<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">#ifdef QT_OPENGL_SUPPORT</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(<span class="type">bool</span>))<span class="operator">,</span>
m_renderer<span class="operator">,</span> SLOT(setAnimation(<span class="type">bool</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(showSourceButton<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> m_renderer<span class="operator">,</span> SLOT(showSource()));
<span class="preprocessor">#ifdef QT_OPENGL_SUPPORT</span>
connect(enableOpenGLButton<span class="operator">,</span> SIGNAL(clicked(<span class="type">bool</span>))<span class="operator">,</span> m_renderer<span class="operator">,</span> SLOT(enableOpenGL(<span class="type">bool</span>)));
<span class="preprocessor">#endif</span>
connect(whatsThisButton<span class="operator">,</span> SIGNAL(clicked(<span class="type">bool</span>))<span class="operator">,</span> m_renderer<span class="operator">,</span> SLOT(setDescriptionEnabled(<span class="type">bool</span>)));
connect(m_renderer<span class="operator">,</span> SIGNAL(descriptionEnabledChanged(<span class="type">bool</span>))<span class="operator">,</span>
whatsThisButton<span class="operator">,</span> SLOT(setChecked(<span class="type">bool</span>)));
<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="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">#ifdef QT_OPENGL_SUPPORT</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="keyword">if</span> (<span class="operator">!</span><span class="type"><a href="qglformat.html">QGLFormat</a></span><span class="operator">::</span>hasOpenGL())
enableOpenGLButton<span class="operator">-</span><span class="operator">></span>hide();
<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="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">#ifdef QT_OPENGL_SUPPORT</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="qt.html">Qt</a></span><span class="operator">::</span>AlignHCenter <span class="operator">|</span> <span class="type"><a href="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="qt.html">Qt</a></span><span class="operator">::</span>AlignHCenter <span class="operator">|</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>AlignTop);
<span class="preprocessor">#ifdef QT_OPENGL_SUPPORT</span>
connect(enableOpenGLButton<span class="operator">,</span> SIGNAL(clicked(<span class="type">bool</span>))<span class="operator">,</span> m_renderer<span class="operator">,</span> SLOT(enableOpenGL(<span class="type">bool</span>)));
<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(<span class="type">bool</span> 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="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> <span class="type">bool</span> 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="qt.html">Qt</a></span><span class="operator">::</span>FlatCap;
m_joinStyle <span class="operator">=</span> <span class="type"><a href="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="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="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="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="qpainter.html">QPainter</a></span><span class="operator">::</span>Antialiasing);
<span class="type"><a href="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="qt.html">Qt</a></span><span class="operator">::</span>NoPen);
<span class="comment">// Construct the path</span>
<span class="type"><a href="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="qcolor.html">QColor</a></span> lg <span class="operator">=</span> <span class="type"><a href="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="qt.html">Qt</a></span><span class="operator">::</span>NoPen) {
<span class="type"><a href="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="qvector.html">QVector</a></span><span class="operator"><</span><span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span><span class="operator">></span> dashes;
<span class="type"><a href="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="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="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="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="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="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="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="qpen.html">QPen</a></span>(<span class="type"><a href="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="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="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="qmatrix.html">QMatrix</a></span> m;
<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> rot <span class="operator">=</span> <span class="number">360</span> <span class="operator">/</span> count;
<span class="type"><a href="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="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="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="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="qtglobal.html#qreal-typedef">qreal</a></span> pad <span class="operator">=</span> <span class="number">10</span>;
<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> left <span class="operator">=</span> pad;
<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> right <span class="operator">=</span> width() <span class="operator">-</span> pad;
<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> top <span class="operator">=</span> pad;
<span class="type"><a href="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="qpointf.html">QPointF</a></span> pos <span class="operator">=</span> m_points<span class="operator">.</span>at(i);
<span class="type"><a href="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="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="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="qtglobal.html#qreal-typedef">qreal</a></span> d <span class="operator">=</span> <span class="type"><a href="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="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="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="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="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="type"><a href="qapplication.html">QApplication</a></span><span class="operator">::</span>syncX();
} <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>
}
<span class="type">bool</span> PathStrokeRenderer<span class="operator">::</span>event(<span class="type"><a href="qevent.html">QEvent</a></span> <span class="operator">*</span>e)
{
<span class="type">bool</span> 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="qevent.html">QEvent</a></span><span class="operator">::</span>TouchBegin:
touchBegin <span class="operator">=</span> <span class="keyword">true</span>;
<span class="keyword">case</span> <span class="type"><a href="qevent.html">QEvent</a></span><span class="operator">::</span>TouchUpdate:
{
<span class="keyword">const</span> <span class="type"><a href="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="qtouchevent.html">QTouchEvent</a></span><span class="operator">*</span><span class="operator">></span>(e);
<span class="keyword">const</span> <span class="type"><a href="qlist.html">QList</a></span><span class="operator"><</span><span class="type"><a href="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="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="qt.html">Qt</a></span><span class="operator">::</span>TouchPointPressed:
{
<span class="comment">// find the point, move it</span>
<span class="type"><a href="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="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="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="qtglobal.html#qreal-typedef">qreal</a></span> d <span class="operator">=</span> <span class="type"><a href="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="qt.html">Qt</a></span><span class="operator">::</span>TouchPointReleased:
{
<span class="comment">// move the point and release</span>
<span class="type"><a href="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="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="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(<span class="type">bool</span> 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>
<!-- @@@demos/pathstroke/pathstroke.cpp -->
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