<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>padnavigator.cpp Example File | Qt Widgets 5.12.2</title> <link rel="stylesheet" type="text/css" href="style/offline-simple.css" /> <script type="text/javascript"> document.getElementsByTagName("link").item(0).setAttribute("href", "style/offline.css"); // loading style sheet breaks anchors that were jumped to before // so force jumping to anchor again setTimeout(function() { var anchor = location.hash; // need to jump to different anchor first (e.g. none) location.hash = "#"; setTimeout(function() { location.hash = anchor; }, 0); }, 0); </script> </head> <body> <div class="header" id="qtdocheader"> <div class="main"> <div class="main-rounded"> <div class="navigationbar"> <table><tr> <td >Qt 5.12</td><td ><a href="qtwidgets-index.html">Qt Widgets</a></td><td ><a href="qtwidgets-graphicsview-padnavigator-example.html">Pad Navigator Example</a></td><td >padnavigator.cpp Example File</td></tr></table><table class="buildversion"><tr> <td id="buildversion" width="100%" align="right"><a href="qtwidgets-index.html">Qt 5.12.2 Reference Documentation</a></td> </tr></table> </div> </div> <div class="content"> <div class="line"> <div class="content mainContent"> <div class="sidebar"><div class="sidebar-content" id="sidebar-content"></div></div> <h1 class="title">padnavigator.cpp Example File</h1> <span class="subtitle">graphicsview/padnavigator/padnavigator.cpp</span> <!-- $$$graphicsview/padnavigator/padnavigator.cpp-description --> <div class="descr"> <a name="details"></a> <pre class="cpp"> <span class="comment">/**************************************************************************** ** ** Copyright (C) 2016 The Qt Company Ltd. ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the examples of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:BSD$ ** Commercial License Usage ** Licensees holding valid commercial Qt licenses may use this file in ** accordance with the commercial license agreement provided with the ** Software or, alternatively, in accordance with the terms contained in ** a written agreement between you and The Qt Company. For licensing terms ** and conditions see https://www.qt.io/terms-conditions. For further ** information use the contact form at https://www.qt.io/contact-us. ** ** BSD License Usage ** Alternatively, you may use this file under the terms of the BSD license ** as follows: ** ** "Redistribution and use in source and binary forms, with or without ** modification, are permitted provided that the following conditions are ** met: ** * Redistributions of source code must retain the above copyright ** notice, this list of conditions and the following disclaimer. ** * Redistributions in binary form must reproduce the above copyright ** notice, this list of conditions and the following disclaimer in ** the documentation and/or other materials provided with the ** distribution. ** * Neither the name of The Qt Company Ltd nor the names of its ** contributors may be used to endorse or promote products derived ** from this software without specific prior written permission. ** ** ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." ** ** $QT_END_LICENSE$ ** ****************************************************************************/</span> <span class="preprocessor">#include "flippablepad.h"</span> <span class="preprocessor">#include "padnavigator.h"</span> <span class="preprocessor">#include "splashitem.h"</span> <span class="preprocessor">#ifndef QT_NO_OPENGL</span> <span class="preprocessor">#include <QtOpenGL></span> <span class="preprocessor">#else</span> <span class="preprocessor">#include <QtWidgets></span> <span class="preprocessor">#endif</span> PadNavigator<span class="operator">::</span>PadNavigator(<span class="keyword">const</span> <span class="type"><a href="../qtcore/qsize.html">QSize</a></span> <span class="operator">&</span>size<span class="operator">,</span> <span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>parent) : <span class="type"><a href="qgraphicsview.html">QGraphicsView</a></span>(parent) { <span class="comment">// Splash item</span> SplashItem <span class="operator">*</span>splash <span class="operator">=</span> <span class="keyword">new</span> SplashItem; splash<span class="operator">-</span><span class="operator">></span>setZValue(<span class="number">1</span>); <span class="comment">// Pad item</span> FlippablePad <span class="operator">*</span>pad <span class="operator">=</span> <span class="keyword">new</span> FlippablePad(size); <span class="type"><a href="qgraphicsrotation.html">QGraphicsRotation</a></span> <span class="operator">*</span>flipRotation <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qgraphicsrotation.html">QGraphicsRotation</a></span>(pad); <span class="type"><a href="qgraphicsrotation.html">QGraphicsRotation</a></span> <span class="operator">*</span>xRotation <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qgraphicsrotation.html">QGraphicsRotation</a></span>(pad); <span class="type"><a href="qgraphicsrotation.html">QGraphicsRotation</a></span> <span class="operator">*</span>yRotation <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qgraphicsrotation.html">QGraphicsRotation</a></span>(pad); flipRotation<span class="operator">-</span><span class="operator">></span>setAxis(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>YAxis); xRotation<span class="operator">-</span><span class="operator">></span>setAxis(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>YAxis); yRotation<span class="operator">-</span><span class="operator">></span>setAxis(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>XAxis); pad<span class="operator">-</span><span class="operator">></span>setTransformations(<span class="type"><a href="../qtcore/qlist.html">QList</a></span><span class="operator"><</span><span class="type"><a href="qgraphicstransform.html">QGraphicsTransform</a></span> <span class="operator">*</span><span class="operator">></span>() <span class="operator"><</span><span class="operator"><</span> flipRotation <span class="operator"><</span><span class="operator"><</span> xRotation <span class="operator"><</span><span class="operator"><</span> yRotation); <span class="comment">// Back (proxy widget) item</span> <span class="type"><a href="qgraphicsproxywidget.html">QGraphicsProxyWidget</a></span> <span class="operator">*</span>backItem <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qgraphicsproxywidget.html">QGraphicsProxyWidget</a></span>(pad); <span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>widget <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qwidget.html">QWidget</a></span>; form<span class="operator">.</span>setupUi(widget); form<span class="operator">.</span>hostName<span class="operator">-</span><span class="operator">></span>setFocus(); backItem<span class="operator">-</span><span class="operator">></span>setWidget(widget); backItem<span class="operator">-</span><span class="operator">></span>setVisible(<span class="keyword">false</span>); backItem<span class="operator">-</span><span class="operator">></span>setFocus(); backItem<span class="operator">-</span><span class="operator">></span>setCacheMode(<span class="type"><a href="qgraphicsitem.html">QGraphicsItem</a></span><span class="operator">::</span>ItemCoordinateCache); <span class="keyword">const</span> <span class="type"><a href="../qtcore/qrectf.html">QRectF</a></span> r <span class="operator">=</span> backItem<span class="operator">-</span><span class="operator">></span>rect(); backItem<span class="operator">-</span><span class="operator">></span>setTransform(<span class="type"><a href="../qtgui/qtransform.html">QTransform</a></span>() <span class="operator">.</span>rotate(<span class="number">180</span><span class="operator">,</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>YAxis) <span class="operator">.</span>translate(<span class="operator">-</span>r<span class="operator">.</span>width()<span class="operator">/</span><span class="number">2</span><span class="operator">,</span> <span class="operator">-</span>r<span class="operator">.</span>height()<span class="operator">/</span><span class="number">2</span>)); <span class="comment">// Selection item</span> RoundRectItem <span class="operator">*</span>selectionItem <span class="operator">=</span> <span class="keyword">new</span> RoundRectItem(<span class="type"><a href="../qtcore/qrectf.html">QRectF</a></span>(<span class="operator">-</span><span class="number">60</span><span class="operator">,</span> <span class="operator">-</span><span class="number">60</span><span class="operator">,</span> <span class="number">120</span><span class="operator">,</span> <span class="number">120</span>)<span class="operator">,</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>gray<span class="operator">,</span> pad); selectionItem<span class="operator">-</span><span class="operator">></span>setZValue(<span class="number">0.5</span>); <span class="comment">// Splash animations</span> <span class="type"><a href="../qtcore/qpropertyanimation.html">QPropertyAnimation</a></span> <span class="operator">*</span>smoothSplashMove <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="../qtcore/qpropertyanimation.html">QPropertyAnimation</a></span>(splash<span class="operator">,</span> <span class="string">"y"</span>); <span class="type"><a href="../qtcore/qpropertyanimation.html">QPropertyAnimation</a></span> <span class="operator">*</span>smoothSplashOpacity <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="../qtcore/qpropertyanimation.html">QPropertyAnimation</a></span>(splash<span class="operator">,</span> <span class="string">"opacity"</span>); smoothSplashMove<span class="operator">-</span><span class="operator">></span>setEasingCurve(<span class="type"><a href="../qtcore/qeasingcurve.html">QEasingCurve</a></span><span class="operator">::</span>InQuad); smoothSplashMove<span class="operator">-</span><span class="operator">></span>setDuration(<span class="number">250</span>); smoothSplashOpacity<span class="operator">-</span><span class="operator">></span>setDuration(<span class="number">250</span>); <span class="comment">// Selection animation</span> <span class="type"><a href="../qtcore/qpropertyanimation.html">QPropertyAnimation</a></span> <span class="operator">*</span>smoothXSelection <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="../qtcore/qpropertyanimation.html">QPropertyAnimation</a></span>(selectionItem<span class="operator">,</span> <span class="string">"x"</span>); <span class="type"><a href="../qtcore/qpropertyanimation.html">QPropertyAnimation</a></span> <span class="operator">*</span>smoothYSelection <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="../qtcore/qpropertyanimation.html">QPropertyAnimation</a></span>(selectionItem<span class="operator">,</span> <span class="string">"y"</span>); <span class="type"><a href="../qtcore/qpropertyanimation.html">QPropertyAnimation</a></span> <span class="operator">*</span>smoothXRotation <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="../qtcore/qpropertyanimation.html">QPropertyAnimation</a></span>(xRotation<span class="operator">,</span> <span class="string">"angle"</span>); <span class="type"><a href="../qtcore/qpropertyanimation.html">QPropertyAnimation</a></span> <span class="operator">*</span>smoothYRotation <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="../qtcore/qpropertyanimation.html">QPropertyAnimation</a></span>(yRotation<span class="operator">,</span> <span class="string">"angle"</span>); smoothXSelection<span class="operator">-</span><span class="operator">></span>setDuration(<span class="number">125</span>); smoothYSelection<span class="operator">-</span><span class="operator">></span>setDuration(<span class="number">125</span>); smoothXRotation<span class="operator">-</span><span class="operator">></span>setDuration(<span class="number">125</span>); smoothYRotation<span class="operator">-</span><span class="operator">></span>setDuration(<span class="number">125</span>); smoothXSelection<span class="operator">-</span><span class="operator">></span>setEasingCurve(<span class="type"><a href="../qtcore/qeasingcurve.html">QEasingCurve</a></span><span class="operator">::</span>InOutQuad); smoothYSelection<span class="operator">-</span><span class="operator">></span>setEasingCurve(<span class="type"><a href="../qtcore/qeasingcurve.html">QEasingCurve</a></span><span class="operator">::</span>InOutQuad); smoothXRotation<span class="operator">-</span><span class="operator">></span>setEasingCurve(<span class="type"><a href="../qtcore/qeasingcurve.html">QEasingCurve</a></span><span class="operator">::</span>InOutQuad); smoothYRotation<span class="operator">-</span><span class="operator">></span>setEasingCurve(<span class="type"><a href="../qtcore/qeasingcurve.html">QEasingCurve</a></span><span class="operator">::</span>InOutQuad); <span class="comment">// Flip animation setup</span> <span class="type"><a href="../qtcore/qpropertyanimation.html">QPropertyAnimation</a></span> <span class="operator">*</span>smoothFlipRotation <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="../qtcore/qpropertyanimation.html">QPropertyAnimation</a></span>(flipRotation<span class="operator">,</span> <span class="string">"angle"</span>); <span class="type"><a href="../qtcore/qpropertyanimation.html">QPropertyAnimation</a></span> <span class="operator">*</span>smoothFlipScale <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="../qtcore/qpropertyanimation.html">QPropertyAnimation</a></span>(pad<span class="operator">,</span> <span class="string">"scale"</span>); <span class="type"><a href="../qtcore/qpropertyanimation.html">QPropertyAnimation</a></span> <span class="operator">*</span>smoothFlipXRotation <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="../qtcore/qpropertyanimation.html">QPropertyAnimation</a></span>(xRotation<span class="operator">,</span> <span class="string">"angle"</span>); <span class="type"><a href="../qtcore/qpropertyanimation.html">QPropertyAnimation</a></span> <span class="operator">*</span>smoothFlipYRotation <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="../qtcore/qpropertyanimation.html">QPropertyAnimation</a></span>(yRotation<span class="operator">,</span> <span class="string">"angle"</span>); <span class="type"><a href="../qtcore/qparallelanimationgroup.html">QParallelAnimationGroup</a></span> <span class="operator">*</span>flipAnimation <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="../qtcore/qparallelanimationgroup.html">QParallelAnimationGroup</a></span>(<span class="keyword">this</span>); smoothFlipScale<span class="operator">-</span><span class="operator">></span>setDuration(<span class="number">500</span>); smoothFlipRotation<span class="operator">-</span><span class="operator">></span>setDuration(<span class="number">500</span>); smoothFlipXRotation<span class="operator">-</span><span class="operator">></span>setDuration(<span class="number">500</span>); smoothFlipYRotation<span class="operator">-</span><span class="operator">></span>setDuration(<span class="number">500</span>); smoothFlipScale<span class="operator">-</span><span class="operator">></span>setEasingCurve(<span class="type"><a href="../qtcore/qeasingcurve.html">QEasingCurve</a></span><span class="operator">::</span>InOutQuad); smoothFlipRotation<span class="operator">-</span><span class="operator">></span>setEasingCurve(<span class="type"><a href="../qtcore/qeasingcurve.html">QEasingCurve</a></span><span class="operator">::</span>InOutQuad); smoothFlipXRotation<span class="operator">-</span><span class="operator">></span>setEasingCurve(<span class="type"><a href="../qtcore/qeasingcurve.html">QEasingCurve</a></span><span class="operator">::</span>InOutQuad); smoothFlipYRotation<span class="operator">-</span><span class="operator">></span>setEasingCurve(<span class="type"><a href="../qtcore/qeasingcurve.html">QEasingCurve</a></span><span class="operator">::</span>InOutQuad); smoothFlipScale<span class="operator">-</span><span class="operator">></span>setKeyValueAt(<span class="number">0</span><span class="operator">,</span> qvariant_cast<span class="operator"><</span><span class="type"><a href="../qtcore/qtglobal.html#qreal-typedef">qreal</a></span><span class="operator">></span>(<span class="number">1.0</span>)); smoothFlipScale<span class="operator">-</span><span class="operator">></span>setKeyValueAt(<span class="number">0.5</span><span class="operator">,</span> qvariant_cast<span class="operator"><</span><span class="type"><a href="../qtcore/qtglobal.html#qreal-typedef">qreal</a></span><span class="operator">></span>(<span class="number">0.7</span>)); smoothFlipScale<span class="operator">-</span><span class="operator">></span>setKeyValueAt(<span class="number">1</span><span class="operator">,</span> qvariant_cast<span class="operator"><</span><span class="type"><a href="../qtcore/qtglobal.html#qreal-typedef">qreal</a></span><span class="operator">></span>(<span class="number">1.0</span>)); flipAnimation<span class="operator">-</span><span class="operator">></span>addAnimation(smoothFlipRotation); flipAnimation<span class="operator">-</span><span class="operator">></span>addAnimation(smoothFlipScale); flipAnimation<span class="operator">-</span><span class="operator">></span>addAnimation(smoothFlipXRotation); flipAnimation<span class="operator">-</span><span class="operator">></span>addAnimation(smoothFlipYRotation); <span class="comment">// Flip animation delayed property assignment</span> <span class="type"><a href="../qtcore/qsequentialanimationgroup.html">QSequentialAnimationGroup</a></span> <span class="operator">*</span>setVariablesSequence <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="../qtcore/qsequentialanimationgroup.html">QSequentialAnimationGroup</a></span>; <span class="type"><a href="../qtcore/qpropertyanimation.html">QPropertyAnimation</a></span> <span class="operator">*</span>setFillAnimation <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="../qtcore/qpropertyanimation.html">QPropertyAnimation</a></span>(pad<span class="operator">,</span> <span class="string">"fill"</span>); <span class="type"><a href="../qtcore/qpropertyanimation.html">QPropertyAnimation</a></span> <span class="operator">*</span>setBackItemVisibleAnimation <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="../qtcore/qpropertyanimation.html">QPropertyAnimation</a></span>(backItem<span class="operator">,</span> <span class="string">"visible"</span>); <span class="type"><a href="../qtcore/qpropertyanimation.html">QPropertyAnimation</a></span> <span class="operator">*</span>setSelectionItemVisibleAnimation <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="../qtcore/qpropertyanimation.html">QPropertyAnimation</a></span>(selectionItem<span class="operator">,</span> <span class="string">"visible"</span>); setFillAnimation<span class="operator">-</span><span class="operator">></span>setDuration(<span class="number">0</span>); setBackItemVisibleAnimation<span class="operator">-</span><span class="operator">></span>setDuration(<span class="number">0</span>); setSelectionItemVisibleAnimation<span class="operator">-</span><span class="operator">></span>setDuration(<span class="number">0</span>); setVariablesSequence<span class="operator">-</span><span class="operator">></span>addPause(<span class="number">250</span>); setVariablesSequence<span class="operator">-</span><span class="operator">></span>addAnimation(setBackItemVisibleAnimation); setVariablesSequence<span class="operator">-</span><span class="operator">></span>addAnimation(setSelectionItemVisibleAnimation); setVariablesSequence<span class="operator">-</span><span class="operator">></span>addAnimation(setFillAnimation); flipAnimation<span class="operator">-</span><span class="operator">></span>addAnimation(setVariablesSequence); <span class="comment">// Build the state machine</span> <span class="type"><a href="../qtcore/qstatemachine.html">QStateMachine</a></span> <span class="operator">*</span>stateMachine <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="../qtcore/qstatemachine.html">QStateMachine</a></span>(<span class="keyword">this</span>); <span class="type"><a href="../qtcore/qstate.html">QState</a></span> <span class="operator">*</span>splashState <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="../qtcore/qstate.html">QState</a></span>(stateMachine); <span class="type"><a href="../qtcore/qstate.html">QState</a></span> <span class="operator">*</span>frontState <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="../qtcore/qstate.html">QState</a></span>(stateMachine); <span class="type"><a href="../qtcore/qhistorystate.html">QHistoryState</a></span> <span class="operator">*</span>historyState <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="../qtcore/qhistorystate.html">QHistoryState</a></span>(frontState); <span class="type"><a href="../qtcore/qstate.html">QState</a></span> <span class="operator">*</span>backState <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="../qtcore/qstate.html">QState</a></span>(stateMachine); frontState<span class="operator">-</span><span class="operator">></span>assignProperty(pad<span class="operator">,</span> <span class="string">"fill"</span><span class="operator">,</span> <span class="keyword">false</span>); frontState<span class="operator">-</span><span class="operator">></span>assignProperty(splash<span class="operator">,</span> <span class="string">"opacity"</span><span class="operator">,</span> <span class="number">0.0</span>); frontState<span class="operator">-</span><span class="operator">></span>assignProperty(backItem<span class="operator">,</span> <span class="string">"visible"</span><span class="operator">,</span> <span class="keyword">false</span>); frontState<span class="operator">-</span><span class="operator">></span>assignProperty(flipRotation<span class="operator">,</span> <span class="string">"angle"</span><span class="operator">,</span> qvariant_cast<span class="operator"><</span><span class="type"><a href="../qtcore/qtglobal.html#qreal-typedef">qreal</a></span><span class="operator">></span>(<span class="number">0.0</span>)); frontState<span class="operator">-</span><span class="operator">></span>assignProperty(selectionItem<span class="operator">,</span> <span class="string">"visible"</span><span class="operator">,</span> <span class="keyword">true</span>); backState<span class="operator">-</span><span class="operator">></span>assignProperty(pad<span class="operator">,</span> <span class="string">"fill"</span><span class="operator">,</span> <span class="keyword">true</span>); backState<span class="operator">-</span><span class="operator">></span>assignProperty(backItem<span class="operator">,</span> <span class="string">"visible"</span><span class="operator">,</span> <span class="keyword">true</span>); backState<span class="operator">-</span><span class="operator">></span>assignProperty(xRotation<span class="operator">,</span> <span class="string">"angle"</span><span class="operator">,</span> qvariant_cast<span class="operator"><</span><span class="type"><a href="../qtcore/qtglobal.html#qreal-typedef">qreal</a></span><span class="operator">></span>(<span class="number">0.0</span>)); backState<span class="operator">-</span><span class="operator">></span>assignProperty(yRotation<span class="operator">,</span> <span class="string">"angle"</span><span class="operator">,</span> qvariant_cast<span class="operator"><</span><span class="type"><a href="../qtcore/qtglobal.html#qreal-typedef">qreal</a></span><span class="operator">></span>(<span class="number">0.0</span>)); backState<span class="operator">-</span><span class="operator">></span>assignProperty(flipRotation<span class="operator">,</span> <span class="string">"angle"</span><span class="operator">,</span> qvariant_cast<span class="operator"><</span><span class="type"><a href="../qtcore/qtglobal.html#qreal-typedef">qreal</a></span><span class="operator">></span>(<span class="number">180.0</span>)); backState<span class="operator">-</span><span class="operator">></span>assignProperty(selectionItem<span class="operator">,</span> <span class="string">"visible"</span><span class="operator">,</span> <span class="keyword">false</span>); stateMachine<span class="operator">-</span><span class="operator">></span>addDefaultAnimation(smoothXRotation); stateMachine<span class="operator">-</span><span class="operator">></span>addDefaultAnimation(smoothYRotation); stateMachine<span class="operator">-</span><span class="operator">></span>addDefaultAnimation(smoothXSelection); stateMachine<span class="operator">-</span><span class="operator">></span>addDefaultAnimation(smoothYSelection); stateMachine<span class="operator">-</span><span class="operator">></span>setInitialState(splashState); <span class="comment">// Transitions</span> <span class="type"><a href="../qtcore/qeventtransition.html">QEventTransition</a></span> <span class="operator">*</span>anyKeyTransition <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="../qtcore/qeventtransition.html">QEventTransition</a></span>(<span class="keyword">this</span><span class="operator">,</span> <span class="type"><a href="../qtcore/qevent.html">QEvent</a></span><span class="operator">::</span>KeyPress<span class="operator">,</span> splashState); anyKeyTransition<span class="operator">-</span><span class="operator">></span>setTargetState(frontState); anyKeyTransition<span class="operator">-</span><span class="operator">></span>addAnimation(smoothSplashMove); anyKeyTransition<span class="operator">-</span><span class="operator">></span>addAnimation(smoothSplashOpacity); <span class="type"><a href="qkeyeventtransition.html">QKeyEventTransition</a></span> <span class="operator">*</span>enterTransition <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qkeyeventtransition.html">QKeyEventTransition</a></span>(<span class="keyword">this</span><span class="operator">,</span> <span class="type"><a href="../qtcore/qevent.html">QEvent</a></span><span class="operator">::</span>KeyPress<span class="operator">,</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>Key_Enter<span class="operator">,</span> backState); <span class="type"><a href="qkeyeventtransition.html">QKeyEventTransition</a></span> <span class="operator">*</span>returnTransition <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qkeyeventtransition.html">QKeyEventTransition</a></span>(<span class="keyword">this</span><span class="operator">,</span> <span class="type"><a href="../qtcore/qevent.html">QEvent</a></span><span class="operator">::</span>KeyPress<span class="operator">,</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>Key_Return<span class="operator">,</span> backState); <span class="type"><a href="qkeyeventtransition.html">QKeyEventTransition</a></span> <span class="operator">*</span>backEnterTransition <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qkeyeventtransition.html">QKeyEventTransition</a></span>(<span class="keyword">this</span><span class="operator">,</span> <span class="type"><a href="../qtcore/qevent.html">QEvent</a></span><span class="operator">::</span>KeyPress<span class="operator">,</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>Key_Enter<span class="operator">,</span> frontState); <span class="type"><a href="qkeyeventtransition.html">QKeyEventTransition</a></span> <span class="operator">*</span>backReturnTransition <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qkeyeventtransition.html">QKeyEventTransition</a></span>(<span class="keyword">this</span><span class="operator">,</span> <span class="type"><a href="../qtcore/qevent.html">QEvent</a></span><span class="operator">::</span>KeyPress<span class="operator">,</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>Key_Return<span class="operator">,</span> frontState); enterTransition<span class="operator">-</span><span class="operator">></span>setTargetState(historyState); returnTransition<span class="operator">-</span><span class="operator">></span>setTargetState(historyState); backEnterTransition<span class="operator">-</span><span class="operator">></span>setTargetState(backState); backReturnTransition<span class="operator">-</span><span class="operator">></span>setTargetState(backState); enterTransition<span class="operator">-</span><span class="operator">></span>addAnimation(flipAnimation); returnTransition<span class="operator">-</span><span class="operator">></span>addAnimation(flipAnimation); backEnterTransition<span class="operator">-</span><span class="operator">></span>addAnimation(flipAnimation); backReturnTransition<span class="operator">-</span><span class="operator">></span>addAnimation(flipAnimation); <span class="comment">// Create substates for each icon; store in temporary grid.</span> <span class="type">int</span> columns <span class="operator">=</span> size<span class="operator">.</span>width(); <span class="type">int</span> rows <span class="operator">=</span> size<span class="operator">.</span>height(); <span class="type"><a href="../qtcore/qvector.html">QVector</a></span><span class="operator"><</span> <span class="type"><a href="../qtcore/qvector.html">QVector</a></span><span class="operator"><</span> <span class="type"><a href="../qtcore/qstate.html">QState</a></span> <span class="operator">*</span> <span class="operator">></span> <span class="operator">></span> stateGrid; stateGrid<span class="operator">.</span>resize(rows); <span class="keyword">for</span> (<span class="type">int</span> y <span class="operator">=</span> <span class="number">0</span>; y <span class="operator"><</span> rows; <span class="operator">+</span><span class="operator">+</span>y) { stateGrid<span class="operator">[</span>y<span class="operator">]</span><span class="operator">.</span>resize(columns); <span class="keyword">for</span> (<span class="type">int</span> x <span class="operator">=</span> <span class="number">0</span>; x <span class="operator"><</span> columns; <span class="operator">+</span><span class="operator">+</span>x) stateGrid<span class="operator">[</span>y<span class="operator">]</span><span class="operator">[</span>x<span class="operator">]</span> <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="../qtcore/qstate.html">QState</a></span>(frontState); } frontState<span class="operator">-</span><span class="operator">></span>setInitialState(stateGrid<span class="operator">[</span><span class="number">0</span><span class="operator">]</span><span class="operator">[</span><span class="number">0</span><span class="operator">]</span>); selectionItem<span class="operator">-</span><span class="operator">></span>setPos(pad<span class="operator">-</span><span class="operator">></span>iconAt(<span class="number">0</span><span class="operator">,</span> <span class="number">0</span>)<span class="operator">-</span><span class="operator">></span>pos()); <span class="comment">// Enable key navigation using state transitions</span> <span class="keyword">for</span> (<span class="type">int</span> y <span class="operator">=</span> <span class="number">0</span>; y <span class="operator"><</span> rows; <span class="operator">+</span><span class="operator">+</span>y) { <span class="keyword">for</span> (<span class="type">int</span> x <span class="operator">=</span> <span class="number">0</span>; x <span class="operator"><</span> columns; <span class="operator">+</span><span class="operator">+</span>x) { <span class="type"><a href="../qtcore/qstate.html">QState</a></span> <span class="operator">*</span>state <span class="operator">=</span> stateGrid<span class="operator">[</span>y<span class="operator">]</span><span class="operator">[</span>x<span class="operator">]</span>; <span class="type"><a href="qkeyeventtransition.html">QKeyEventTransition</a></span> <span class="operator">*</span>rightTransition <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qkeyeventtransition.html">QKeyEventTransition</a></span>(<span class="keyword">this</span><span class="operator">,</span> <span class="type"><a href="../qtcore/qevent.html">QEvent</a></span><span class="operator">::</span>KeyPress<span class="operator">,</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>Key_Right<span class="operator">,</span> state); <span class="type"><a href="qkeyeventtransition.html">QKeyEventTransition</a></span> <span class="operator">*</span>leftTransition <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qkeyeventtransition.html">QKeyEventTransition</a></span>(<span class="keyword">this</span><span class="operator">,</span> <span class="type"><a href="../qtcore/qevent.html">QEvent</a></span><span class="operator">::</span>KeyPress<span class="operator">,</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>Key_Left<span class="operator">,</span> state); <span class="type"><a href="qkeyeventtransition.html">QKeyEventTransition</a></span> <span class="operator">*</span>downTransition <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qkeyeventtransition.html">QKeyEventTransition</a></span>(<span class="keyword">this</span><span class="operator">,</span> <span class="type"><a href="../qtcore/qevent.html">QEvent</a></span><span class="operator">::</span>KeyPress<span class="operator">,</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>Key_Down<span class="operator">,</span> state); <span class="type"><a href="qkeyeventtransition.html">QKeyEventTransition</a></span> <span class="operator">*</span>upTransition <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qkeyeventtransition.html">QKeyEventTransition</a></span>(<span class="keyword">this</span><span class="operator">,</span> <span class="type"><a href="../qtcore/qevent.html">QEvent</a></span><span class="operator">::</span>KeyPress<span class="operator">,</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>Key_Up<span class="operator">,</span> state); rightTransition<span class="operator">-</span><span class="operator">></span>setTargetState(stateGrid<span class="operator">[</span>y<span class="operator">]</span><span class="operator">[</span>(x <span class="operator">+</span> <span class="number">1</span>) <span class="operator">%</span> columns<span class="operator">]</span>); leftTransition<span class="operator">-</span><span class="operator">></span>setTargetState(stateGrid<span class="operator">[</span>y<span class="operator">]</span><span class="operator">[</span>((x <span class="operator">-</span> <span class="number">1</span>) <span class="operator">+</span> columns) <span class="operator">%</span> columns<span class="operator">]</span>); downTransition<span class="operator">-</span><span class="operator">></span>setTargetState(stateGrid<span class="operator">[</span>(y <span class="operator">+</span> <span class="number">1</span>) <span class="operator">%</span> rows<span class="operator">]</span><span class="operator">[</span>x<span class="operator">]</span>); upTransition<span class="operator">-</span><span class="operator">></span>setTargetState(stateGrid<span class="operator">[</span>((y <span class="operator">-</span> <span class="number">1</span>) <span class="operator">+</span> rows) <span class="operator">%</span> rows<span class="operator">]</span><span class="operator">[</span>x<span class="operator">]</span>); RoundRectItem <span class="operator">*</span>icon <span class="operator">=</span> pad<span class="operator">-</span><span class="operator">></span>iconAt(x<span class="operator">,</span> y); state<span class="operator">-</span><span class="operator">></span>assignProperty(xRotation<span class="operator">,</span> <span class="string">"angle"</span><span class="operator">,</span> <span class="operator">-</span>icon<span class="operator">-</span><span class="operator">></span>x() <span class="operator">/</span> <span class="number">6.0</span>); state<span class="operator">-</span><span class="operator">></span>assignProperty(yRotation<span class="operator">,</span> <span class="string">"angle"</span><span class="operator">,</span> icon<span class="operator">-</span><span class="operator">></span>y() <span class="operator">/</span> <span class="number">6.0</span>); state<span class="operator">-</span><span class="operator">></span>assignProperty(selectionItem<span class="operator">,</span> <span class="string">"x"</span><span class="operator">,</span> icon<span class="operator">-</span><span class="operator">></span>x()); state<span class="operator">-</span><span class="operator">></span>assignProperty(selectionItem<span class="operator">,</span> <span class="string">"y"</span><span class="operator">,</span> icon<span class="operator">-</span><span class="operator">></span>y()); frontState<span class="operator">-</span><span class="operator">></span>assignProperty(icon<span class="operator">,</span> <span class="string">"visible"</span><span class="operator">,</span> <span class="keyword">true</span>); backState<span class="operator">-</span><span class="operator">></span>assignProperty(icon<span class="operator">,</span> <span class="string">"visible"</span><span class="operator">,</span> <span class="keyword">false</span>); <span class="type"><a href="../qtcore/qpropertyanimation.html">QPropertyAnimation</a></span> <span class="operator">*</span>setIconVisibleAnimation <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="../qtcore/qpropertyanimation.html">QPropertyAnimation</a></span>(icon<span class="operator">,</span> <span class="string">"visible"</span>); setIconVisibleAnimation<span class="operator">-</span><span class="operator">></span>setDuration(<span class="number">0</span>); setVariablesSequence<span class="operator">-</span><span class="operator">></span>addAnimation(setIconVisibleAnimation); } } <span class="comment">// Scene</span> <span class="type"><a href="qgraphicsscene.html">QGraphicsScene</a></span> <span class="operator">*</span>scene <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qgraphicsscene.html">QGraphicsScene</a></span>(<span class="keyword">this</span>); scene<span class="operator">-</span><span class="operator">></span>setBackgroundBrush(<span class="type"><a href="../qtgui/qpixmap.html">QPixmap</a></span>(<span class="string">":/images/blue_angle_swirl.jpg"</span>)); scene<span class="operator">-</span><span class="operator">></span>setItemIndexMethod(<span class="type"><a href="qgraphicsscene.html">QGraphicsScene</a></span><span class="operator">::</span>NoIndex); scene<span class="operator">-</span><span class="operator">></span>addItem(pad); scene<span class="operator">-</span><span class="operator">></span>setSceneRect(scene<span class="operator">-</span><span class="operator">></span>itemsBoundingRect()); setScene(scene); <span class="comment">// Adjust splash item to scene contents</span> <span class="keyword">const</span> <span class="type"><a href="../qtcore/qrectf.html">QRectF</a></span> sbr <span class="operator">=</span> splash<span class="operator">-</span><span class="operator">></span>boundingRect(); splash<span class="operator">-</span><span class="operator">></span>setPos(<span class="operator">-</span>sbr<span class="operator">.</span>width() <span class="operator">/</span> <span class="number">2</span><span class="operator">,</span> scene<span class="operator">-</span><span class="operator">></span>sceneRect()<span class="operator">.</span>top() <span class="operator">-</span> <span class="number">2</span>); frontState<span class="operator">-</span><span class="operator">></span>assignProperty(splash<span class="operator">,</span> <span class="string">"y"</span><span class="operator">,</span> splash<span class="operator">-</span><span class="operator">></span>y() <span class="operator">-</span> <span class="number">100.0</span>); scene<span class="operator">-</span><span class="operator">></span>addItem(splash); <span class="comment">// View</span> setVerticalScrollBarPolicy(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>ScrollBarAlwaysOff); setHorizontalScrollBarPolicy(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>ScrollBarAlwaysOff); setMinimumSize(<span class="number">50</span><span class="operator">,</span> <span class="number">50</span>); setViewportUpdateMode(FullViewportUpdate); setCacheMode(CacheBackground); setRenderHints(<span class="type"><a href="../qtgui/qpainter.html">QPainter</a></span><span class="operator">::</span>Antialiasing <span class="operator">|</span> <span class="type"><a href="../qtgui/qpainter.html">QPainter</a></span><span class="operator">::</span>SmoothPixmapTransform <span class="operator">|</span> <span class="type"><a href="../qtgui/qpainter.html">QPainter</a></span><span class="operator">::</span>TextAntialiasing); <span class="preprocessor">#ifndef QT_NO_OPENGL</span> setViewport(<span class="keyword">new</span> <span class="type"><a href="qopenglwidget.html">QOpenGLWidget</a></span>); <span class="preprocessor">#endif</span> stateMachine<span class="operator">-</span><span class="operator">></span>start(); } <span class="type">void</span> PadNavigator<span class="operator">::</span>resizeEvent(<span class="type"><a href="../qtgui/qresizeevent.html">QResizeEvent</a></span> <span class="operator">*</span>event) { <span class="type"><a href="qgraphicsview.html">QGraphicsView</a></span><span class="operator">::</span>resizeEvent(event); fitInView(scene()<span class="operator">-</span><span class="operator">></span>sceneRect()<span class="operator">,</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>KeepAspectRatio); } </pre> </div> <!-- @@@graphicsview/padnavigator/padnavigator.cpp --> </div> </div> </div> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2019 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners.<br/> The documentation provided herein is licensed under the terms of the <a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation License version 1.3</a> as published by the Free Software Foundation.<br/> Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners. </p> </div> </body> </html>