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Breadcrumbs go here --> </ul> </div> <div class="toolbuttons toolblock"> <ul> <li id="smallA" class="t_button">A</li> <li id="medA" class="t_button active">A</li> <li id="bigA" class="t_button">A</li> <li id="print" class="t_button"><a href="javascript:this.print();"> <span>Print</span></a></li> </ul> </div> </div> <div class="content mainContent"> <h1 class="title">gradients.cpp Example File</h1> <span class="small-subtitle">demos/gradients/gradients.cpp</span> <!-- $$$demos/gradients/gradients.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 "gradients.h"</span> <span class="preprocessor">#include "hoverpoints.h"</span> ShadeWidget<span class="operator">::</span>ShadeWidget(ShadeType type<span class="operator">,</span> <span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>parent) : <span class="type"><a href="qwidget.html">QWidget</a></span>(parent)<span class="operator">,</span> m_shade_type(type)<span class="operator">,</span> m_alpha_gradient(<span class="type"><a href="qlineargradient.html">QLinearGradient</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="comment">// Checkers background</span> <span class="keyword">if</span> (m_shade_type <span class="operator">=</span><span class="operator">=</span> ARGBShade) { <span class="type"><a href="qpixmap.html">QPixmap</a></span> pm(<span class="number">20</span><span class="operator">,</span> <span class="number">20</span>); <span class="type"><a href="qpainter.html">QPainter</a></span> pmp(<span class="operator">&</span>pm); pmp<span class="operator">.</span>fillRect(<span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">10</span><span class="operator">,</span> <span class="number">10</span><span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>lightGray); pmp<span class="operator">.</span>fillRect(<span class="number">10</span><span class="operator">,</span> <span class="number">10</span><span class="operator">,</span> <span class="number">10</span><span class="operator">,</span> <span class="number">10</span><span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>lightGray); pmp<span class="operator">.</span>fillRect(<span class="number">0</span><span class="operator">,</span> <span class="number">10</span><span class="operator">,</span> <span class="number">10</span><span class="operator">,</span> <span class="number">10</span><span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>darkGray); pmp<span class="operator">.</span>fillRect(<span class="number">10</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">10</span><span class="operator">,</span> <span class="number">10</span><span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>darkGray); pmp<span class="operator">.</span>end(); <span class="type"><a href="qpalette.html">QPalette</a></span> pal <span class="operator">=</span> palette(); pal<span class="operator">.</span>setBrush(backgroundRole()<span class="operator">,</span> <span class="type"><a href="qbrush.html">QBrush</a></span>(pm)); setAutoFillBackground(<span class="keyword">true</span>); setPalette(pal); } <span class="keyword">else</span> { setAttribute(<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>WA_NoBackground); } <span class="type"><a href="qpolygonf.html">QPolygonF</a></span> points; 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> sizeHint()<span class="operator">.</span>height()) <span class="operator"><</span><span class="operator"><</span> <span class="type"><a href="qpointf.html">QPointF</a></span>(sizeHint()<span class="operator">.</span>width()<span class="operator">,</span> <span class="number">0</span>); m_hoverPoints <span class="operator">=</span> <span class="keyword">new</span> HoverPoints(<span class="keyword">this</span><span class="operator">,</span> HoverPoints<span class="operator">::</span>CircleShape); <span class="comment">// m_hoverPoints->setConnectionType(HoverPoints::LineConnection);</span> m_hoverPoints<span class="operator">-</span><span class="operator">></span>setPoints(points); m_hoverPoints<span class="operator">-</span><span class="operator">></span>setPointLock(<span class="number">0</span><span class="operator">,</span> HoverPoints<span class="operator">::</span>LockToLeft); m_hoverPoints<span class="operator">-</span><span class="operator">></span>setPointLock(<span class="number">1</span><span class="operator">,</span> HoverPoints<span class="operator">::</span>LockToRight); m_hoverPoints<span class="operator">-</span><span class="operator">></span>setSortType(HoverPoints<span class="operator">::</span>XSort); 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); connect(m_hoverPoints<span class="operator">,</span> SIGNAL(pointsChanged(<span class="type"><a href="qpolygonf.html">QPolygonF</a></span>))<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SIGNAL(colorsChanged())); } <span class="type"><a href="qpolygonf.html">QPolygonF</a></span> ShadeWidget<span class="operator">::</span>points() <span class="keyword">const</span> { <span class="keyword">return</span> m_hoverPoints<span class="operator">-</span><span class="operator">></span>points(); } <span class="type"><a href="qtglobal.html#uint-typedef">uint</a></span> ShadeWidget<span class="operator">::</span>colorAt(<span class="type">int</span> x) { generateShade(); <span class="type"><a href="qpolygonf.html">QPolygonF</a></span> pts <span class="operator">=</span> m_hoverPoints<span class="operator">-</span><span class="operator">></span>points(); <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> pts<span class="operator">.</span>size(); <span class="operator">+</span><span class="operator">+</span>i) { <span class="keyword">if</span> (pts<span class="operator">.</span>at(i<span class="operator">-</span><span class="number">1</span>)<span class="operator">.</span>x() <span class="operator"><</span><span class="operator">=</span> x <span class="operator">&</span><span class="operator">&</span> pts<span class="operator">.</span>at(i)<span class="operator">.</span>x() <span class="operator">></span><span class="operator">=</span> x) { <span class="type"><a href="qlinef.html">QLineF</a></span> l(pts<span class="operator">.</span>at(i<span class="operator">-</span><span class="number">1</span>)<span class="operator">,</span> pts<span class="operator">.</span>at(i)); l<span class="operator">.</span>setLength(l<span class="operator">.</span>length() <span class="operator">*</span> ((x <span class="operator">-</span> l<span class="operator">.</span>x1()) <span class="operator">/</span> l<span class="operator">.</span>dx())); <span class="keyword">return</span> m_shade<span class="operator">.</span>pixel(<a href="qtglobal.html#qRound">qRound</a>(<a href="qtglobal.html#qMin">qMin</a>(l<span class="operator">.</span>x2()<span class="operator">,</span> (<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span>(m_shade<span class="operator">.</span>width() <span class="operator">-</span> <span class="number">1</span>))))<span class="operator">,</span> <a href="qtglobal.html#qRound">qRound</a>(<a href="qtglobal.html#qMin">qMin</a>(l<span class="operator">.</span>y2()<span class="operator">,</span> <span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span>(m_shade<span class="operator">.</span>height() <span class="operator">-</span> <span class="number">1</span>)))); } } <span class="keyword">return</span> <span class="number">0</span>; } <span class="type">void</span> ShadeWidget<span class="operator">::</span>setGradientStops(<span class="keyword">const</span> <span class="type"><a href="qgradient.html#QGradientStops-typedef">QGradientStops</a></span> <span class="operator">&</span>stops) { <span class="keyword">if</span> (m_shade_type <span class="operator">=</span><span class="operator">=</span> ARGBShade) { m_alpha_gradient <span class="operator">=</span> <span class="type"><a href="qlineargradient.html">QLinearGradient</a></span>(<span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> width()<span class="operator">,</span> <span class="number">0</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>stops<span class="operator">.</span>size(); <span class="operator">+</span><span class="operator">+</span>i) { <span class="type"><a href="qcolor.html">QColor</a></span> c <span class="operator">=</span> stops<span class="operator">.</span>at(i)<span class="operator">.</span>second; m_alpha_gradient<span class="operator">.</span>setColorAt(stops<span class="operator">.</span>at(i)<span class="operator">.</span>first<span class="operator">,</span> <span class="type"><a href="qcolor.html">QColor</a></span>(c<span class="operator">.</span>red()<span class="operator">,</span> c<span class="operator">.</span>green()<span class="operator">,</span> c<span class="operator">.</span>blue())); } m_shade <span class="operator">=</span> <span class="type"><a href="qimage.html">QImage</a></span>(); generateShade(); update(); } } <span class="type">void</span> ShadeWidget<span class="operator">::</span>paintEvent(<span class="type"><a href="qpaintevent.html">QPaintEvent</a></span> <span class="operator">*</span>) { generateShade(); <span class="type"><a href="qpainter.html">QPainter</a></span> p(<span class="keyword">this</span>); p<span class="operator">.</span>drawImage(<span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> m_shade); p<span class="operator">.</span>setPen(<span class="type"><a href="qcolor.html">QColor</a></span>(<span class="number">146</span><span class="operator">,</span> <span class="number">146</span><span class="operator">,</span> <span class="number">146</span>)); p<span class="operator">.</span>drawRect(<span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> width() <span class="operator">-</span> <span class="number">1</span><span class="operator">,</span> height() <span class="operator">-</span> <span class="number">1</span>); } <span class="type">void</span> ShadeWidget<span class="operator">::</span>generateShade() { <span class="keyword">if</span> (m_shade<span class="operator">.</span>isNull() <span class="operator">|</span><span class="operator">|</span> m_shade<span class="operator">.</span>size() <span class="operator">!</span><span class="operator">=</span> size()) { <span class="keyword">if</span> (m_shade_type <span class="operator">=</span><span class="operator">=</span> ARGBShade) { m_shade <span class="operator">=</span> <span class="type"><a href="qimage.html">QImage</a></span>(size()<span class="operator">,</span> <span class="type"><a href="qimage.html">QImage</a></span><span class="operator">::</span>Format_ARGB32_Premultiplied); m_shade<span class="operator">.</span>fill(<span class="number">0</span>); <span class="type"><a href="qpainter.html">QPainter</a></span> p(<span class="operator">&</span>m_shade); p<span class="operator">.</span>fillRect(rect()<span class="operator">,</span> m_alpha_gradient); p<span class="operator">.</span>setCompositionMode(<span class="type"><a href="qpainter.html">QPainter</a></span><span class="operator">::</span>CompositionMode_DestinationIn); <span class="type"><a href="qlineargradient.html">QLinearGradient</a></span> fade(<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> height()); fade<span class="operator">.</span>setColorAt(<span class="number">0</span><span class="operator">,</span> <span class="type"><a href="qcolor.html">QColor</a></span>(<span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">255</span>)); fade<span class="operator">.</span>setColorAt(<span class="number">1</span><span class="operator">,</span> <span class="type"><a href="qcolor.html">QColor</a></span>(<span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">0</span>)); p<span class="operator">.</span>fillRect(rect()<span class="operator">,</span> fade); } <span class="keyword">else</span> { m_shade <span class="operator">=</span> <span class="type"><a href="qimage.html">QImage</a></span>(size()<span class="operator">,</span> <span class="type"><a href="qimage.html">QImage</a></span><span class="operator">::</span>Format_RGB32); <span class="type"><a href="qlineargradient.html">QLinearGradient</a></span> shade(<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> height()); shade<span class="operator">.</span>setColorAt(<span class="number">1</span><span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>black); <span class="keyword">if</span> (m_shade_type <span class="operator">=</span><span class="operator">=</span> RedShade) shade<span class="operator">.</span>setColorAt(<span class="number">0</span><span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>red); <span class="keyword">else</span> <span class="keyword">if</span> (m_shade_type <span class="operator">=</span><span class="operator">=</span> GreenShade) shade<span class="operator">.</span>setColorAt(<span class="number">0</span><span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>green); <span class="keyword">else</span> shade<span class="operator">.</span>setColorAt(<span class="number">0</span><span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>blue); <span class="type"><a href="qpainter.html">QPainter</a></span> p(<span class="operator">&</span>m_shade); p<span class="operator">.</span>fillRect(rect()<span class="operator">,</span> shade); } } } GradientEditor<span class="operator">::</span>GradientEditor(<span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>parent) : <span class="type"><a href="qwidget.html">QWidget</a></span>(parent) { <span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span> <span class="operator">*</span>vbox <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span>(<span class="keyword">this</span>); vbox<span class="operator">-</span><span class="operator">></span>setSpacing(<span class="number">1</span>); vbox<span class="operator">-</span><span class="operator">></span>setMargin(<span class="number">1</span>); m_red_shade <span class="operator">=</span> <span class="keyword">new</span> ShadeWidget(ShadeWidget<span class="operator">::</span>RedShade<span class="operator">,</span> <span class="keyword">this</span>); m_green_shade <span class="operator">=</span> <span class="keyword">new</span> ShadeWidget(ShadeWidget<span class="operator">::</span>GreenShade<span class="operator">,</span> <span class="keyword">this</span>); m_blue_shade <span class="operator">=</span> <span class="keyword">new</span> ShadeWidget(ShadeWidget<span class="operator">::</span>BlueShade<span class="operator">,</span> <span class="keyword">this</span>); m_alpha_shade <span class="operator">=</span> <span class="keyword">new</span> ShadeWidget(ShadeWidget<span class="operator">::</span>ARGBShade<span class="operator">,</span> <span class="keyword">this</span>); vbox<span class="operator">-</span><span class="operator">></span>addWidget(m_red_shade); vbox<span class="operator">-</span><span class="operator">></span>addWidget(m_green_shade); vbox<span class="operator">-</span><span class="operator">></span>addWidget(m_blue_shade); vbox<span class="operator">-</span><span class="operator">></span>addWidget(m_alpha_shade); connect(m_red_shade<span class="operator">,</span> SIGNAL(colorsChanged())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(pointsUpdated())); connect(m_green_shade<span class="operator">,</span> SIGNAL(colorsChanged())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(pointsUpdated())); connect(m_blue_shade<span class="operator">,</span> SIGNAL(colorsChanged())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(pointsUpdated())); connect(m_alpha_shade<span class="operator">,</span> SIGNAL(colorsChanged())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(pointsUpdated())); } <span class="keyword">inline</span> <span class="keyword">static</span> <span class="type">bool</span> x_less_than(<span class="keyword">const</span> <span class="type"><a href="qpointf.html">QPointF</a></span> <span class="operator">&</span>p1<span class="operator">,</span> <span class="keyword">const</span> <span class="type"><a href="qpointf.html">QPointF</a></span> <span class="operator">&</span>p2) { <span class="keyword">return</span> p1<span class="operator">.</span>x() <span class="operator"><</span> p2<span class="operator">.</span>x(); } <span class="type">void</span> GradientEditor<span class="operator">::</span>pointsUpdated() { <span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> w <span class="operator">=</span> m_alpha_shade<span class="operator">-</span><span class="operator">></span>width(); <span class="type"><a href="qgradient.html#QGradientStops-typedef">QGradientStops</a></span> stops; <span class="type"><a href="qpolygonf.html">QPolygonF</a></span> points; points <span class="operator">+</span><span class="operator">=</span> m_red_shade<span class="operator">-</span><span class="operator">></span>points(); points <span class="operator">+</span><span class="operator">=</span> m_green_shade<span class="operator">-</span><span class="operator">></span>points(); points <span class="operator">+</span><span class="operator">=</span> m_blue_shade<span class="operator">-</span><span class="operator">></span>points(); points <span class="operator">+</span><span class="operator">=</span> m_alpha_shade<span class="operator">-</span><span class="operator">></span>points(); <a href="qtalgorithms.html#qSort">qSort</a>(points<span class="operator">.</span>begin()<span class="operator">,</span> points<span class="operator">.</span>end()<span class="operator">,</span> x_less_than); <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>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> x <span class="operator">=</span> <span class="type">int</span>(points<span class="operator">.</span>at(i)<span class="operator">.</span>x()); <span class="keyword">if</span> (i<span class="operator">+</span><span class="number">1</span> <span class="operator"><</span> points<span class="operator">.</span>size() <span class="operator">&</span><span class="operator">&</span> x <span class="operator">=</span><span class="operator">=</span> points<span class="operator">.</span>at(i<span class="operator">+</span><span class="number">1</span>)<span class="operator">.</span>x()) <span class="keyword">continue</span>; <span class="type"><a href="qcolor.html">QColor</a></span> color((<span class="number">0x00ff0000</span> <span class="operator">&</span> m_red_shade<span class="operator">-</span><span class="operator">></span>colorAt(<span class="type">int</span>(x))) <span class="operator">></span><span class="operator">></span> <span class="number">16</span><span class="operator">,</span> (<span class="number">0x0000ff00</span> <span class="operator">&</span> m_green_shade<span class="operator">-</span><span class="operator">></span>colorAt(<span class="type">int</span>(x))) <span class="operator">></span><span class="operator">></span> <span class="number">8</span><span class="operator">,</span> (<span class="number">0x000000ff</span> <span class="operator">&</span> m_blue_shade<span class="operator">-</span><span class="operator">></span>colorAt(<span class="type">int</span>(x)))<span class="operator">,</span> (<span class="number">0xff000000</span> <span class="operator">&</span> m_alpha_shade<span class="operator">-</span><span class="operator">></span>colorAt(<span class="type">int</span>(x))) <span class="operator">></span><span class="operator">></span> <span class="number">24</span>); <span class="keyword">if</span> (x <span class="operator">/</span> w <span class="operator">></span> <span class="number">1</span>) <span class="keyword">return</span>; stops <span class="operator"><</span><span class="operator"><</span> <span class="type"><a href="qgradient.html#QGradientStop-typedef">QGradientStop</a></span>(x <span class="operator">/</span> w<span class="operator">,</span> color); } m_alpha_shade<span class="operator">-</span><span class="operator">></span>setGradientStops(stops); <span class="keyword">emit</span> gradientStopsChanged(stops); } <span class="keyword">static</span> <span class="type">void</span> set_shade_points(<span class="keyword">const</span> <span class="type"><a href="qpolygonf.html">QPolygonF</a></span> <span class="operator">&</span>points<span class="operator">,</span> ShadeWidget <span class="operator">*</span>shade) { shade<span class="operator">-</span><span class="operator">></span>hoverPoints()<span class="operator">-</span><span class="operator">></span>setPoints(points); shade<span class="operator">-</span><span class="operator">></span>hoverPoints()<span class="operator">-</span><span class="operator">></span>setPointLock(<span class="number">0</span><span class="operator">,</span> HoverPoints<span class="operator">::</span>LockToLeft); shade<span class="operator">-</span><span class="operator">></span>hoverPoints()<span class="operator">-</span><span class="operator">></span>setPointLock(points<span class="operator">.</span>size() <span class="operator">-</span> <span class="number">1</span><span class="operator">,</span> HoverPoints<span class="operator">::</span>LockToRight); shade<span class="operator">-</span><span class="operator">></span>update(); } <span class="type">void</span> GradientEditor<span class="operator">::</span>setGradientStops(<span class="keyword">const</span> <span class="type"><a href="qgradient.html#QGradientStops-typedef">QGradientStops</a></span> <span class="operator">&</span>stops) { <span class="type"><a href="qpolygonf.html">QPolygonF</a></span> pts_red<span class="operator">,</span> pts_green<span class="operator">,</span> pts_blue<span class="operator">,</span> pts_alpha; <span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> h_red <span class="operator">=</span> m_red_shade<span class="operator">-</span><span class="operator">></span>height(); <span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> h_green <span class="operator">=</span> m_green_shade<span class="operator">-</span><span class="operator">></span>height(); <span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> h_blue <span class="operator">=</span> m_blue_shade<span class="operator">-</span><span class="operator">></span>height(); <span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> h_alpha <span class="operator">=</span> m_alpha_shade<span class="operator">-</span><span class="operator">></span>height(); <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>stops<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> pos <span class="operator">=</span> stops<span class="operator">.</span>at(i)<span class="operator">.</span>first; <span class="type"><a href="qcolor.html#QRgb-typedef">QRgb</a></span> color <span class="operator">=</span> stops<span class="operator">.</span>at(i)<span class="operator">.</span>second<span class="operator">.</span>rgba(); pts_red <span class="operator"><</span><span class="operator"><</span> <span class="type"><a href="qpointf.html">QPointF</a></span>(pos <span class="operator">*</span> m_red_shade<span class="operator">-</span><span class="operator">></span>width()<span class="operator">,</span> h_red <span class="operator">-</span> <a href="qcolor.html#qRed">qRed</a>(color) <span class="operator">*</span> h_red <span class="operator">/</span> <span class="number">255</span>); pts_green <span class="operator"><</span><span class="operator"><</span> <span class="type"><a href="qpointf.html">QPointF</a></span>(pos <span class="operator">*</span> m_green_shade<span class="operator">-</span><span class="operator">></span>width()<span class="operator">,</span> h_green <span class="operator">-</span> <a href="qcolor.html#qGreen">qGreen</a>(color) <span class="operator">*</span> h_green <span class="operator">/</span> <span class="number">255</span>); pts_blue <span class="operator"><</span><span class="operator"><</span> <span class="type"><a href="qpointf.html">QPointF</a></span>(pos <span class="operator">*</span> m_blue_shade<span class="operator">-</span><span class="operator">></span>width()<span class="operator">,</span> h_blue <span class="operator">-</span> <a href="qcolor.html#qBlue">qBlue</a>(color) <span class="operator">*</span> h_blue <span class="operator">/</span> <span class="number">255</span>); pts_alpha <span class="operator"><</span><span class="operator"><</span> <span class="type"><a href="qpointf.html">QPointF</a></span>(pos <span class="operator">*</span> m_alpha_shade<span class="operator">-</span><span class="operator">></span>width()<span class="operator">,</span> h_alpha <span class="operator">-</span> <a href="qcolor.html#qAlpha">qAlpha</a>(color) <span class="operator">*</span> h_alpha <span class="operator">/</span> <span class="number">255</span>); } set_shade_points(pts_red<span class="operator">,</span> m_red_shade); set_shade_points(pts_green<span class="operator">,</span> m_green_shade); set_shade_points(pts_blue<span class="operator">,</span> m_blue_shade); set_shade_points(pts_alpha<span class="operator">,</span> m_alpha_shade); } GradientWidget<span class="operator">::</span>GradientWidget(<span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>parent) : <span class="type"><a href="qwidget.html">QWidget</a></span>(parent) { setWindowTitle(tr(<span class="string">"Gradients"</span>)); m_renderer <span class="operator">=</span> <span class="keyword">new</span> GradientRenderer(<span class="keyword">this</span>); <span class="type"><a href="qgroupbox.html">QGroupBox</a></span> <span class="operator">*</span>mainGroup <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qgroupbox.html">QGroupBox</a></span>(<span class="keyword">this</span>); mainGroup<span class="operator">-</span><span class="operator">></span>setTitle(tr(<span class="string">"Gradients"</span>)); <span class="type"><a href="qgroupbox.html">QGroupBox</a></span> <span class="operator">*</span>editorGroup <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qgroupbox.html">QGroupBox</a></span>(mainGroup); editorGroup<span class="operator">-</span><span class="operator">></span>setTitle(tr(<span class="string">"Color Editor"</span>)); m_editor <span class="operator">=</span> <span class="keyword">new</span> GradientEditor(editorGroup); <span class="type"><a href="qgroupbox.html">QGroupBox</a></span> <span class="operator">*</span>typeGroup <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qgroupbox.html">QGroupBox</a></span>(mainGroup); typeGroup<span class="operator">-</span><span class="operator">></span>setTitle(tr(<span class="string">"Gradient Type"</span>)); m_linearButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qradiobutton.html">QRadioButton</a></span>(tr(<span class="string">"Linear Gradient"</span>)<span class="operator">,</span> typeGroup); m_radialButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qradiobutton.html">QRadioButton</a></span>(tr(<span class="string">"Radial Gradient"</span>)<span class="operator">,</span> typeGroup); m_conicalButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qradiobutton.html">QRadioButton</a></span>(tr(<span class="string">"Conical Gradient"</span>)<span class="operator">,</span> typeGroup); <span class="type"><a href="qgroupbox.html">QGroupBox</a></span> <span class="operator">*</span>spreadGroup <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qgroupbox.html">QGroupBox</a></span>(mainGroup); spreadGroup<span class="operator">-</span><span class="operator">></span>setTitle(tr(<span class="string">"Spread Method"</span>)); m_padSpreadButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qradiobutton.html">QRadioButton</a></span>(tr(<span class="string">"Pad Spread"</span>)<span class="operator">,</span> spreadGroup); m_reflectSpreadButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qradiobutton.html">QRadioButton</a></span>(tr(<span class="string">"Reflect Spread"</span>)<span class="operator">,</span> spreadGroup); m_repeatSpreadButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qradiobutton.html">QRadioButton</a></span>(tr(<span class="string">"Repeat Spread"</span>)<span class="operator">,</span> spreadGroup); <span class="type"><a href="qgroupbox.html">QGroupBox</a></span> <span class="operator">*</span>defaultsGroup <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qgroupbox.html">QGroupBox</a></span>(mainGroup); defaultsGroup<span class="operator">-</span><span class="operator">></span>setTitle(tr(<span class="string">"Defaults"</span>)); <span class="type"><a href="qpushbutton.html">QPushButton</a></span> <span class="operator">*</span>default1Button <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qpushbutton.html">QPushButton</a></span>(tr(<span class="string">"1"</span>)<span class="operator">,</span> defaultsGroup); <span class="type"><a href="qpushbutton.html">QPushButton</a></span> <span class="operator">*</span>default2Button <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qpushbutton.html">QPushButton</a></span>(tr(<span class="string">"2"</span>)<span class="operator">,</span> defaultsGroup); <span class="type"><a href="qpushbutton.html">QPushButton</a></span> <span class="operator">*</span>default3Button <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qpushbutton.html">QPushButton</a></span>(tr(<span class="string">"3"</span>)<span class="operator">,</span> defaultsGroup); <span class="type"><a href="qpushbutton.html">QPushButton</a></span> <span class="operator">*</span>default4Button <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qpushbutton.html">QPushButton</a></span>(tr(<span class="string">"Reset"</span>)<span class="operator">,</span> editorGroup); <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="qhboxlayout.html">QHBoxLayout</a></span> <span class="operator">*</span>mainLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qhboxlayout.html">QHBoxLayout</a></span>(<span class="keyword">this</span>); mainLayout<span class="operator">-</span><span class="operator">></span>addWidget(m_renderer); mainLayout<span class="operator">-</span><span class="operator">></span>addWidget(mainGroup); mainGroup<span class="operator">-</span><span class="operator">></span>setFixedWidth(<span class="number">180</span>); <span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span> <span class="operator">*</span>mainGroupLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span>(mainGroup); mainGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(editorGroup); mainGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(typeGroup); mainGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(spreadGroup); mainGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(defaultsGroup); 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="type"><a href="qvboxlayout.html">QVBoxLayout</a></span> <span class="operator">*</span>editorGroupLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span>(editorGroup); editorGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(m_editor); <span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span> <span class="operator">*</span>typeGroupLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span>(typeGroup); typeGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(m_linearButton); typeGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(m_radialButton); typeGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(m_conicalButton); <span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span> <span class="operator">*</span>spreadGroupLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qvboxlayout.html">QVBoxLayout</a></span>(spreadGroup); spreadGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(m_padSpreadButton); spreadGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(m_repeatSpreadButton); spreadGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(m_reflectSpreadButton); <span class="type"><a href="qhboxlayout.html">QHBoxLayout</a></span> <span class="operator">*</span>defaultsGroupLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qhboxlayout.html">QHBoxLayout</a></span>(defaultsGroup); defaultsGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(default1Button); defaultsGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(default2Button); defaultsGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(default3Button); editorGroupLayout<span class="operator">-</span><span class="operator">></span>addWidget(default4Button); connect(m_editor<span class="operator">,</span> SIGNAL(gradientStopsChanged(<span class="type"><a href="qgradient.html#QGradientStops-typedef">QGradientStops</a></span>))<span class="operator">,</span> m_renderer<span class="operator">,</span> SLOT(setGradientStops(<span class="type"><a href="qgradient.html#QGradientStops-typedef">QGradientStops</a></span>))); connect(m_linearButton<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> m_renderer<span class="operator">,</span> SLOT(setLinearGradient())); connect(m_radialButton<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> m_renderer<span class="operator">,</span> SLOT(setRadialGradient())); connect(m_conicalButton<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> m_renderer<span class="operator">,</span> SLOT(setConicalGradient())); connect(m_padSpreadButton<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> m_renderer<span class="operator">,</span> SLOT(setPadSpread())); connect(m_reflectSpreadButton<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> m_renderer<span class="operator">,</span> SLOT(setReflectSpread())); connect(m_repeatSpreadButton<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> m_renderer<span class="operator">,</span> SLOT(setRepeatSpread())); connect(default1Button<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(setDefault1())); connect(default2Button<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(setDefault2())); connect(default3Button<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(setDefault3())); connect(default4Button<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(setDefault4())); 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(whatsThisButton<span class="operator">,</span> SIGNAL(clicked(<span class="type">bool</span>))<span class="operator">,</span> m_renderer<span class="operator">-</span><span class="operator">></span>hoverPoints()<span class="operator">,</span> SLOT(setDisabled(<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>))); connect(m_renderer<span class="operator">,</span> SIGNAL(descriptionEnabledChanged(<span class="type">bool</span>))<span class="operator">,</span> m_renderer<span class="operator">-</span><span class="operator">></span>hoverPoints()<span class="operator">,</span> SLOT(setDisabled(<span class="type">bool</span>))); m_renderer<span class="operator">-</span><span class="operator">></span>loadSourceFile(<span class="string">":res/gradients/gradients.cpp"</span>); m_renderer<span class="operator">-</span><span class="operator">></span>loadDescription(<span class="string">":res/gradients/gradients.html"</span>); <span class="type"><a href="qtimer.html">QTimer</a></span><span class="operator">::</span>singleShot(<span class="number">50</span><span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(setDefault1())); } <span class="type">void</span> GradientWidget<span class="operator">::</span>setDefault(<span class="type">int</span> config) { <span class="type"><a href="qgradient.html#QGradientStops-typedef">QGradientStops</a></span> stops; <span class="type"><a href="qpolygonf.html">QPolygonF</a></span> points; <span class="keyword">switch</span> (config) { <span class="keyword">case</span> <span class="number">1</span>: stops <span class="operator"><</span><span class="operator"><</span> <span class="type"><a href="qgradient.html#QGradientStop-typedef">QGradientStop</a></span>(<span class="number">0.00</span><span class="operator">,</span> <span class="type"><a href="qcolor.html">QColor</a></span><span class="operator">::</span>fromRgba(<span class="number">0</span>)); stops <span class="operator"><</span><span class="operator"><</span> <span class="type"><a href="qgradient.html#QGradientStop-typedef">QGradientStop</a></span>(<span class="number">0.04</span><span class="operator">,</span> <span class="type"><a href="qcolor.html">QColor</a></span><span class="operator">::</span>fromRgba(<span class="number">0xff131360</span>)); stops <span class="operator"><</span><span class="operator"><</span> <span class="type"><a href="qgradient.html#QGradientStop-typedef">QGradientStop</a></span>(<span class="number">0.08</span><span class="operator">,</span> <span class="type"><a href="qcolor.html">QColor</a></span><span class="operator">::</span>fromRgba(<span class="number">0xff202ccc</span>)); stops <span class="operator"><</span><span class="operator"><</span> <span class="type"><a href="qgradient.html#QGradientStop-typedef">QGradientStop</a></span>(<span class="number">0.42</span><span class="operator">,</span> <span class="type"><a href="qcolor.html">QColor</a></span><span class="operator">::</span>fromRgba(<span class="number">0xff93d3f9</span>)); stops <span class="operator"><</span><span class="operator"><</span> <span class="type"><a href="qgradient.html#QGradientStop-typedef">QGradientStop</a></span>(<span class="number">0.51</span><span class="operator">,</span> <span class="type"><a href="qcolor.html">QColor</a></span><span class="operator">::</span>fromRgba(<span class="number">0xffb3e6ff</span>)); stops <span class="operator"><</span><span class="operator"><</span> <span class="type"><a href="qgradient.html#QGradientStop-typedef">QGradientStop</a></span>(<span class="number">0.73</span><span class="operator">,</span> <span class="type"><a href="qcolor.html">QColor</a></span><span class="operator">::</span>fromRgba(<span class="number">0xffffffec</span>)); stops <span class="operator"><</span><span class="operator"><</span> <span class="type"><a href="qgradient.html#QGradientStop-typedef">QGradientStop</a></span>(<span class="number">0.92</span><span class="operator">,</span> <span class="type"><a href="qcolor.html">QColor</a></span><span class="operator">::</span>fromRgba(<span class="number">0xff5353d9</span>)); stops <span class="operator"><</span><span class="operator"><</span> <span class="type"><a href="qgradient.html#QGradientStop-typedef">QGradientStop</a></span>(<span class="number">0.96</span><span class="operator">,</span> <span class="type"><a href="qcolor.html">QColor</a></span><span class="operator">::</span>fromRgba(<span class="number">0xff262666</span>)); stops <span class="operator"><</span><span class="operator"><</span> <span class="type"><a href="qgradient.html#QGradientStop-typedef">QGradientStop</a></span>(<span class="number">1.00</span><span class="operator">,</span> <span class="type"><a href="qcolor.html">QColor</a></span><span class="operator">::</span>fromRgba(<span class="number">0</span>)); m_linearButton<span class="operator">-</span><span class="operator">></span>animateClick(); m_repeatSpreadButton<span class="operator">-</span><span class="operator">></span>animateClick(); <span class="keyword">break</span>; <span class="keyword">case</span> <span class="number">2</span>: stops <span class="operator"><</span><span class="operator"><</span> <span class="type"><a href="qgradient.html#QGradientStop-typedef">QGradientStop</a></span>(<span class="number">0.00</span><span class="operator">,</span> <span class="type"><a href="qcolor.html">QColor</a></span><span class="operator">::</span>fromRgba(<span class="number">0xffffffff</span>)); stops <span class="operator"><</span><span class="operator"><</span> <span class="type"><a href="qgradient.html#QGradientStop-typedef">QGradientStop</a></span>(<span class="number">0.11</span><span class="operator">,</span> <span class="type"><a href="qcolor.html">QColor</a></span><span class="operator">::</span>fromRgba(<span class="number">0xfff9ffa0</span>)); stops <span class="operator"><</span><span class="operator"><</span> <span class="type"><a href="qgradient.html#QGradientStop-typedef">QGradientStop</a></span>(<span class="number">0.13</span><span class="operator">,</span> <span class="type"><a href="qcolor.html">QColor</a></span><span class="operator">::</span>fromRgba(<span class="number">0xfff9ff99</span>)); stops <span class="operator"><</span><span class="operator"><</span> <span class="type"><a href="qgradient.html#QGradientStop-typedef">QGradientStop</a></span>(<span class="number">0.14</span><span class="operator">,</span> <span class="type"><a href="qcolor.html">QColor</a></span><span class="operator">::</span>fromRgba(<span class="number">0xfff3ff86</span>)); stops <span class="operator"><</span><span class="operator"><</span> <span class="type"><a href="qgradient.html#QGradientStop-typedef">QGradientStop</a></span>(<span class="number">0.49</span><span class="operator">,</span> <span class="type"><a href="qcolor.html">QColor</a></span><span class="operator">::</span>fromRgba(<span class="number">0xff93b353</span>)); stops <span class="operator"><</span><span class="operator"><</span> <span class="type"><a href="qgradient.html#QGradientStop-typedef">QGradientStop</a></span>(<span class="number">0.87</span><span class="operator">,</span> <span class="type"><a href="qcolor.html">QColor</a></span><span class="operator">::</span>fromRgba(<span class="number">0xff264619</span>)); stops <span class="operator"><</span><span class="operator"><</span> <span class="type"><a href="qgradient.html#QGradientStop-typedef">QGradientStop</a></span>(<span class="number">0.96</span><span class="operator">,</span> <span class="type"><a href="qcolor.html">QColor</a></span><span class="operator">::</span>fromRgba(<span class="number">0xff0c1306</span>)); stops <span class="operator"><</span><span class="operator"><</span> <span class="type"><a href="qgradient.html#QGradientStop-typedef">QGradientStop</a></span>(<span class="number">1.00</span><span class="operator">,</span> <span class="type"><a href="qcolor.html">QColor</a></span><span class="operator">::</span>fromRgba(<span class="number">0</span>)); m_radialButton<span class="operator">-</span><span class="operator">></span>animateClick(); m_padSpreadButton<span class="operator">-</span><span class="operator">></span>animateClick(); <span class="keyword">break</span>; <span class="keyword">case</span> <span class="number">3</span>: stops <span class="operator"><</span><span class="operator"><</span> <span class="type"><a href="qgradient.html#QGradientStop-typedef">QGradientStop</a></span>(<span class="number">0.00</span><span class="operator">,</span> <span class="type"><a href="qcolor.html">QColor</a></span><span class="operator">::</span>fromRgba(<span class="number">0</span>)); stops <span class="operator"><</span><span class="operator"><</span> <span class="type"><a href="qgradient.html#QGradientStop-typedef">QGradientStop</a></span>(<span class="number">0.10</span><span class="operator">,</span> <span class="type"><a href="qcolor.html">QColor</a></span><span class="operator">::</span>fromRgba(<span class="number">0xffe0cc73</span>)); stops <span class="operator"><</span><span class="operator"><</span> <span class="type"><a href="qgradient.html#QGradientStop-typedef">QGradientStop</a></span>(<span class="number">0.17</span><span class="operator">,</span> <span class="type"><a href="qcolor.html">QColor</a></span><span class="operator">::</span>fromRgba(<span class="number">0xffc6a006</span>)); stops <span class="operator"><</span><span class="operator"><</span> <span class="type"><a href="qgradient.html#QGradientStop-typedef">QGradientStop</a></span>(<span class="number">0.46</span><span class="operator">,</span> <span class="type"><a href="qcolor.html">QColor</a></span><span class="operator">::</span>fromRgba(<span class="number">0xff600659</span>)); stops <span class="operator"><</span><span class="operator"><</span> <span class="type"><a href="qgradient.html#QGradientStop-typedef">QGradientStop</a></span>(<span class="number">0.72</span><span class="operator">,</span> <span class="type"><a href="qcolor.html">QColor</a></span><span class="operator">::</span>fromRgba(<span class="number">0xff0680ac</span>)); stops <span class="operator"><</span><span class="operator"><</span> <span class="type"><a href="qgradient.html#QGradientStop-typedef">QGradientStop</a></span>(<span class="number">0.92</span><span class="operator">,</span> <span class="type"><a href="qcolor.html">QColor</a></span><span class="operator">::</span>fromRgba(<span class="number">0xffb9d9e6</span>)); stops <span class="operator"><</span><span class="operator"><</span> <span class="type"><a href="qgradient.html#QGradientStop-typedef">QGradientStop</a></span>(<span class="number">1.00</span><span class="operator">,</span> <span class="type"><a href="qcolor.html">QColor</a></span><span class="operator">::</span>fromRgba(<span class="number">0</span>)); m_conicalButton<span class="operator">-</span><span class="operator">></span>animateClick(); m_padSpreadButton<span class="operator">-</span><span class="operator">></span>animateClick(); <span class="keyword">break</span>; <span class="keyword">case</span> <span class="number">4</span>: stops <span class="operator"><</span><span class="operator"><</span> <span class="type"><a href="qgradient.html#QGradientStop-typedef">QGradientStop</a></span>(<span class="number">0.00</span><span class="operator">,</span> <span class="type"><a href="qcolor.html">QColor</a></span><span class="operator">::</span>fromRgba(<span class="number">0xff000000</span>)); stops <span class="operator"><</span><span class="operator"><</span> <span class="type"><a href="qgradient.html#QGradientStop-typedef">QGradientStop</a></span>(<span class="number">1.00</span><span class="operator">,</span> <span class="type"><a href="qcolor.html">QColor</a></span><span class="operator">::</span>fromRgba(<span class="number">0xffffffff</span>)); <span class="keyword">break</span>; <span class="keyword">default</span>: <a href="qtglobal.html#qWarning">qWarning</a>(<span class="string">"bad default: %d\n"</span><span class="operator">,</span> config); <span class="keyword">break</span>; } <span class="type"><a href="qpolygonf.html">QPolygonF</a></span> pts; <span class="type">int</span> h_off <span class="operator">=</span> m_renderer<span class="operator">-</span><span class="operator">></span>width() <span class="operator">/</span> <span class="number">10</span>; <span class="type">int</span> v_off <span class="operator">=</span> m_renderer<span class="operator">-</span><span class="operator">></span>height() <span class="operator">/</span> <span class="number">8</span>; pts <span class="operator"><</span><span class="operator"><</span> <span class="type"><a href="qpointf.html">QPointF</a></span>(m_renderer<span class="operator">-</span><span class="operator">></span>width() <span class="operator">/</span> <span class="number">2</span><span class="operator">,</span> m_renderer<span class="operator">-</span><span class="operator">></span>height() <span class="operator">/</span> <span class="number">2</span>) <span class="operator"><</span><span class="operator"><</span> <span class="type"><a href="qpointf.html">QPointF</a></span>(m_renderer<span class="operator">-</span><span class="operator">></span>width() <span class="operator">/</span> <span class="number">2</span> <span class="operator">-</span> h_off<span class="operator">,</span> m_renderer<span class="operator">-</span><span class="operator">></span>height() <span class="operator">/</span> <span class="number">2</span> <span class="operator">-</span> v_off); m_editor<span class="operator">-</span><span class="operator">></span>setGradientStops(stops); m_renderer<span class="operator">-</span><span class="operator">></span>hoverPoints()<span class="operator">-</span><span class="operator">></span>setPoints(pts); m_renderer<span class="operator">-</span><span class="operator">></span>setGradientStops(stops); } GradientRenderer<span class="operator">::</span>GradientRenderer(<span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>parent) : ArthurFrame(parent) { m_hoverPoints <span class="operator">=</span> <span class="keyword">new</span> HoverPoints(<span class="keyword">this</span><span class="operator">,</span> HoverPoints<span class="operator">::</span>CircleShape); m_hoverPoints<span class="operator">-</span><span class="operator">></span>setPointSize(<span class="type"><a href="qsize.html">QSize</a></span>(<span class="number">20</span><span class="operator">,</span> <span class="number">20</span>)); m_hoverPoints<span class="operator">-</span><span class="operator">></span>setConnectionType(HoverPoints<span class="operator">::</span>NoConnection); m_hoverPoints<span class="operator">-</span><span class="operator">></span>setEditable(<span class="keyword">false</span>); <span class="type"><a href="qvector.html">QVector</a></span><span class="operator"><</span><span class="type"><a href="qpointf.html">QPointF</a></span><span class="operator">></span> points; points <span class="operator"><</span><span class="operator"><</span> <span class="type"><a href="qpointf.html">QPointF</a></span>(<span class="number">100</span><span class="operator">,</span> <span class="number">100</span>) <span class="operator"><</span><span class="operator"><</span> <span class="type"><a href="qpointf.html">QPointF</a></span>(<span class="number">200</span><span class="operator">,</span> <span class="number">200</span>); m_hoverPoints<span class="operator">-</span><span class="operator">></span>setPoints(points); m_spread <span class="operator">=</span> <span class="type"><a href="qgradient.html">QGradient</a></span><span class="operator">::</span>PadSpread; m_gradientType <span class="operator">=</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>LinearGradientPattern; } <span class="type">void</span> GradientRenderer<span class="operator">::</span>setGradientStops(<span class="keyword">const</span> <span class="type"><a href="qgradient.html#QGradientStops-typedef">QGradientStops</a></span> <span class="operator">&</span>stops) { m_stops <span class="operator">=</span> stops; update(); } <span class="type">void</span> GradientRenderer<span class="operator">::</span>mousePressEvent(<span class="type"><a href="qmouseevent.html">QMouseEvent</a></span> <span class="operator">*</span>) { setDescriptionEnabled(<span class="keyword">false</span>); } <span class="type">void</span> GradientRenderer<span class="operator">::</span>paint(<span class="type"><a href="qpainter.html">QPainter</a></span> <span class="operator">*</span>p) { <span class="type"><a href="qpolygonf.html">QPolygonF</a></span> pts <span class="operator">=</span> m_hoverPoints<span class="operator">-</span><span class="operator">></span>points(); <span class="type"><a href="qgradient.html">QGradient</a></span> g; <span class="keyword">if</span> (m_gradientType <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>LinearGradientPattern) { g <span class="operator">=</span> <span class="type"><a href="qlineargradient.html">QLinearGradient</a></span>(pts<span class="operator">.</span>at(<span class="number">0</span>)<span class="operator">,</span> pts<span class="operator">.</span>at(<span class="number">1</span>)); } <span class="keyword">else</span> <span class="keyword">if</span> (m_gradientType <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>RadialGradientPattern) { g <span class="operator">=</span> <span class="type"><a href="qradialgradient.html">QRadialGradient</a></span>(pts<span class="operator">.</span>at(<span class="number">0</span>)<span class="operator">,</span> <a href="qtglobal.html#qMin">qMin</a>(width()<span class="operator">,</span> height()) <span class="operator">/</span> <span class="number">3.0</span><span class="operator">,</span> pts<span class="operator">.</span>at(<span class="number">1</span>)); } <span class="keyword">else</span> { <span class="type"><a href="qlinef.html">QLineF</a></span> l(pts<span class="operator">.</span>at(<span class="number">0</span>)<span class="operator">,</span> pts<span class="operator">.</span>at(<span class="number">1</span>)); <span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> angle <span class="operator">=</span> l<span class="operator">.</span>angle(<span class="type"><a href="qlinef.html">QLineF</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="keyword">if</span> (l<span class="operator">.</span>dy() <span class="operator">></span> <span class="number">0</span>) angle <span class="operator">=</span> <span class="number">360</span> <span class="operator">-</span> angle; g <span class="operator">=</span> <span class="type"><a href="qconicalgradient.html">QConicalGradient</a></span>(pts<span class="operator">.</span>at(<span class="number">0</span>)<span class="operator">,</span> angle); } <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_stops<span class="operator">.</span>size(); <span class="operator">+</span><span class="operator">+</span>i) g<span class="operator">.</span>setColorAt(m_stops<span class="operator">.</span>at(i)<span class="operator">.</span>first<span class="operator">,</span> m_stops<span class="operator">.</span>at(i)<span class="operator">.</span>second); g<span class="operator">.</span>setSpread(m_spread); p<span class="operator">-</span><span class="operator">></span>setBrush(g); p<span class="operator">-</span><span class="operator">></span>setPen(<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>NoPen); p<span class="operator">-</span><span class="operator">></span>drawRect(rect()); }</pre> </div> <!-- @@@demos/gradients/gradients.cpp --> </div> </div> </div> <div class="ft"> <span></span> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2013 Digia Plc and/or its subsidiaries. Documentation contributions included herein are the copyrights of their respective owners.</p> <br /> <p> 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.</p> <p> Documentation sources may be obtained from <a href="http://www.qt-project.org"> www.qt-project.org</a>.</p> <br /> <p> Digia, Qt and their respective logos are trademarks of Digia Plc in Finland and/or other countries worldwide. All other trademarks are property of their respective owners. <a title="Privacy Policy" href="http://en.gitorious.org/privacy_policy/">Privacy Policy</a></p> </div> <script src="scripts/functions.js" type="text/javascript"></script> </body> </html>