<?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>qtbox.cpp Example File | Qt Widgets 5.12.6</title> <link rel="stylesheet" type="text/css" href="style/offline-simple.css" /> <script type="text/javascript"> document.getElementsByTagName("link").item(0).setAttribute("href", "style/offline.css"); // loading style sheet breaks anchors that were jumped to before // so force jumping to anchor again setTimeout(function() { var anchor = location.hash; // need to jump to different anchor first (e.g. none) location.hash = "#"; setTimeout(function() { location.hash = anchor; }, 0); }, 0); </script> </head> <body> <div class="header" id="qtdocheader"> <div class="main"> <div class="main-rounded"> <div class="navigationbar"> <table><tr> <td >Qt 5.12</td><td ><a href="qtwidgets-index.html">Qt Widgets</a></td><td ><a href="qtwidgets-graphicsview-boxes-example.html">Boxes</a></td><td >qtbox.cpp Example File</td></tr></table><table class="buildversion"><tr> <td id="buildversion" width="100%" align="right"><a href="qtwidgets-index.html">Qt 5.12.6 Reference Documentation</a></td> </tr></table> </div> </div> <div class="content"> <div class="line"> <div class="content mainContent"> <div class="sidebar"><div class="sidebar-content" id="sidebar-content"></div></div> <h1 class="title">qtbox.cpp Example File</h1> <span class="subtitle">graphicsview/boxes/qtbox.cpp</span> <!-- $$$graphicsview/boxes/qtbox.cpp-description --> <div class="descr"> <a name="details"></a> <pre class="cpp"> <span class="comment">/**************************************************************************** ** ** Copyright (C) 2016 The Qt Company Ltd. ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the demonstration applications of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:BSD$ ** Commercial License Usage ** Licensees holding valid commercial Qt licenses may use this file in ** accordance with the commercial license agreement provided with the ** Software or, alternatively, in accordance with the terms contained in ** a written agreement between you and The Qt Company. For licensing terms ** and conditions see https://www.qt.io/terms-conditions. For further ** information use the contact form at https://www.qt.io/contact-us. ** ** BSD License Usage ** Alternatively, you may use this file under the terms of the BSD license ** as follows: ** ** "Redistribution and use in source and binary forms, with or without ** modification, are permitted provided that the following conditions are ** met: ** * Redistributions of source code must retain the above copyright ** notice, this list of conditions and the following disclaimer. ** * Redistributions in binary form must reproduce the above copyright ** notice, this list of conditions and the following disclaimer in ** the documentation and/or other materials provided with the ** distribution. ** * Neither the name of The Qt Company Ltd nor the names of its ** contributors may be used to endorse or promote products derived ** from this software without specific prior written permission. ** ** ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." ** ** $QT_END_LICENSE$ ** ****************************************************************************/</span> <span class="preprocessor">#include "qtbox.h"</span> <span class="keyword">const</span> <span class="type"><a href="../qtcore/qtglobal.html#qreal-typedef">qreal</a></span> ROTATE_SPEED_X <span class="operator">=</span> <span class="number">30.0</span> <span class="operator">/</span> <span class="number">1000.0</span>; <span class="keyword">const</span> <span class="type"><a href="../qtcore/qtglobal.html#qreal-typedef">qreal</a></span> ROTATE_SPEED_Y <span class="operator">=</span> <span class="number">20.0</span> <span class="operator">/</span> <span class="number">1000.0</span>; <span class="keyword">const</span> <span class="type"><a href="../qtcore/qtglobal.html#qreal-typedef">qreal</a></span> ROTATE_SPEED_Z <span class="operator">=</span> <span class="number">40.0</span> <span class="operator">/</span> <span class="number">1000.0</span>; <span class="keyword">const</span> <span class="type">int</span> MAX_ITEM_SIZE <span class="operator">=</span> <span class="number">512</span>; <span class="keyword">const</span> <span class="type">int</span> MIN_ITEM_SIZE <span class="operator">=</span> <span class="number">16</span>; <span class="comment">//============================================================================//</span> <span class="comment">// ItemBase //</span> <span class="comment">//============================================================================//</span> ItemBase<span class="operator">::</span>ItemBase(<span class="type">int</span> size<span class="operator">,</span> <span class="type">int</span> x<span class="operator">,</span> <span class="type">int</span> y) : m_size(size)<span class="operator">,</span> m_isResizing(<span class="keyword">false</span>) { setFlag(<span class="type"><a href="qgraphicsitem.html">QGraphicsItem</a></span><span class="operator">::</span>ItemIsMovable<span class="operator">,</span> <span class="keyword">true</span>); setFlag(<span class="type"><a href="qgraphicsitem.html">QGraphicsItem</a></span><span class="operator">::</span>ItemIsSelectable<span class="operator">,</span> <span class="keyword">true</span>); setFlag(<span class="type"><a href="qgraphicsitem.html">QGraphicsItem</a></span><span class="operator">::</span>ItemIsFocusable<span class="operator">,</span> <span class="keyword">true</span>); setAcceptHoverEvents(<span class="keyword">true</span>); setPos(x<span class="operator">,</span> y); m_startTime <span class="operator">=</span> <span class="type"><a href="../qtcore/qtime.html">QTime</a></span><span class="operator">::</span>currentTime(); } ItemBase<span class="operator">::</span><span class="operator">~</span>ItemBase() { } <span class="type"><a href="../qtcore/qrectf.html">QRectF</a></span> ItemBase<span class="operator">::</span>boundingRect() <span class="keyword">const</span> { <span class="keyword">return</span> <span class="type"><a href="../qtcore/qrectf.html">QRectF</a></span>(<span class="operator">-</span>m_size <span class="operator">/</span> <span class="number">2</span><span class="operator">,</span> <span class="operator">-</span>m_size <span class="operator">/</span> <span class="number">2</span><span class="operator">,</span> m_size<span class="operator">,</span> m_size); } <span class="type">void</span> ItemBase<span class="operator">::</span>paint(<span class="type"><a href="../qtgui/qpainter.html">QPainter</a></span> <span class="operator">*</span>painter<span class="operator">,</span> <span class="keyword">const</span> <span class="type"><a href="qstyleoptiongraphicsitem.html">QStyleOptionGraphicsItem</a></span> <span class="operator">*</span>option<span class="operator">,</span> <span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>) { <span class="keyword">if</span> (option<span class="operator">-</span><span class="operator">></span>state <span class="operator">&</span> <span class="type"><a href="qstyle.html">QStyle</a></span><span class="operator">::</span>State_Selected) { painter<span class="operator">-</span><span class="operator">></span>setRenderHint(<span class="type"><a href="../qtgui/qpainter.html">QPainter</a></span><span class="operator">::</span>Antialiasing<span class="operator">,</span> <span class="keyword">true</span>); <span class="keyword">if</span> (option<span class="operator">-</span><span class="operator">></span>state <span class="operator">&</span> <span class="type"><a href="qstyle.html">QStyle</a></span><span class="operator">::</span>State_HasFocus) painter<span class="operator">-</span><span class="operator">></span>setPen(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>yellow); <span class="keyword">else</span> painter<span class="operator">-</span><span class="operator">></span>setPen(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>white); painter<span class="operator">-</span><span class="operator">></span>drawRect(boundingRect()); painter<span class="operator">-</span><span class="operator">></span>drawLine(m_size <span class="operator">/</span> <span class="number">2</span> <span class="operator">-</span> <span class="number">9</span><span class="operator">,</span> m_size <span class="operator">/</span> <span class="number">2</span><span class="operator">,</span> m_size <span class="operator">/</span> <span class="number">2</span><span class="operator">,</span> m_size <span class="operator">/</span> <span class="number">2</span> <span class="operator">-</span> <span class="number">9</span>); painter<span class="operator">-</span><span class="operator">></span>drawLine(m_size <span class="operator">/</span> <span class="number">2</span> <span class="operator">-</span> <span class="number">6</span><span class="operator">,</span> m_size <span class="operator">/</span> <span class="number">2</span><span class="operator">,</span> m_size <span class="operator">/</span> <span class="number">2</span><span class="operator">,</span> m_size <span class="operator">/</span> <span class="number">2</span> <span class="operator">-</span> <span class="number">6</span>); painter<span class="operator">-</span><span class="operator">></span>drawLine(m_size <span class="operator">/</span> <span class="number">2</span> <span class="operator">-</span> <span class="number">3</span><span class="operator">,</span> m_size <span class="operator">/</span> <span class="number">2</span><span class="operator">,</span> m_size <span class="operator">/</span> <span class="number">2</span><span class="operator">,</span> m_size <span class="operator">/</span> <span class="number">2</span> <span class="operator">-</span> <span class="number">3</span>); painter<span class="operator">-</span><span class="operator">></span>setRenderHint(<span class="type"><a href="../qtgui/qpainter.html">QPainter</a></span><span class="operator">::</span>Antialiasing<span class="operator">,</span> <span class="keyword">false</span>); } } <span class="type">void</span> ItemBase<span class="operator">::</span>contextMenuEvent(<span class="type"><a href="qgraphicsscenecontextmenuevent.html">QGraphicsSceneContextMenuEvent</a></span> <span class="operator">*</span>event) { <span class="keyword">if</span> (<span class="operator">!</span>isSelected() <span class="operator">&</span><span class="operator">&</span> scene()) { scene()<span class="operator">-</span><span class="operator">></span>clearSelection(); setSelected(<span class="keyword">true</span>); } <span class="type"><a href="qmenu.html">QMenu</a></span> menu; <span class="type"><a href="qaction.html">QAction</a></span> <span class="operator">*</span>delAction <span class="operator">=</span> menu<span class="operator">.</span>addAction(<span class="string">"Delete"</span>); <span class="type"><a href="qaction.html">QAction</a></span> <span class="operator">*</span>newAction <span class="operator">=</span> menu<span class="operator">.</span>addAction(<span class="string">"New"</span>); <span class="type"><a href="qaction.html">QAction</a></span> <span class="operator">*</span>growAction <span class="operator">=</span> menu<span class="operator">.</span>addAction(<span class="string">"Grow"</span>); <span class="type"><a href="qaction.html">QAction</a></span> <span class="operator">*</span>shrinkAction <span class="operator">=</span> menu<span class="operator">.</span>addAction(<span class="string">"Shrink"</span>); <span class="type"><a href="qaction.html">QAction</a></span> <span class="operator">*</span>selectedAction <span class="operator">=</span> menu<span class="operator">.</span>exec(event<span class="operator">-</span><span class="operator">></span>screenPos()); <span class="keyword">if</span> (selectedAction <span class="operator">=</span><span class="operator">=</span> delAction) deleteSelectedItems(scene()); <span class="keyword">else</span> <span class="keyword">if</span> (selectedAction <span class="operator">=</span><span class="operator">=</span> newAction) duplicateSelectedItems(scene()); <span class="keyword">else</span> <span class="keyword">if</span> (selectedAction <span class="operator">=</span><span class="operator">=</span> growAction) growSelectedItems(scene()); <span class="keyword">else</span> <span class="keyword">if</span> (selectedAction <span class="operator">=</span><span class="operator">=</span> shrinkAction) shrinkSelectedItems(scene()); } <span class="type">void</span> ItemBase<span class="operator">::</span>duplicateSelectedItems(<span class="type"><a href="qgraphicsscene.html">QGraphicsScene</a></span> <span class="operator">*</span>scene) { <span class="keyword">if</span> (<span class="operator">!</span>scene) <span class="keyword">return</span>; <span class="type"><a href="../qtcore/qlist.html">QList</a></span><span class="operator"><</span><span class="type"><a href="qgraphicsitem.html">QGraphicsItem</a></span> <span class="operator">*</span><span class="operator">></span> selected; selected <span class="operator">=</span> scene<span class="operator">-</span><span class="operator">></span>selectedItems(); foreach (<span class="type"><a href="qgraphicsitem.html">QGraphicsItem</a></span> <span class="operator">*</span>item<span class="operator">,</span> selected) { ItemBase <span class="operator">*</span>itemBase <span class="operator">=</span> qgraphicsitem_cast<span class="operator"><</span>ItemBase <span class="operator">*</span><span class="operator">></span>(item); <span class="keyword">if</span> (itemBase) scene<span class="operator">-</span><span class="operator">></span>addItem(itemBase<span class="operator">-</span><span class="operator">></span>createNew(itemBase<span class="operator">-</span><span class="operator">></span>m_size<span class="operator">,</span> itemBase<span class="operator">-</span><span class="operator">></span>pos()<span class="operator">.</span>x() <span class="operator">+</span> itemBase<span class="operator">-</span><span class="operator">></span>m_size<span class="operator">,</span> itemBase<span class="operator">-</span><span class="operator">></span>pos()<span class="operator">.</span>y())); } } <span class="type">void</span> ItemBase<span class="operator">::</span>deleteSelectedItems(<span class="type"><a href="qgraphicsscene.html">QGraphicsScene</a></span> <span class="operator">*</span>scene) { <span class="keyword">if</span> (<span class="operator">!</span>scene) <span class="keyword">return</span>; <span class="type"><a href="../qtcore/qlist.html">QList</a></span><span class="operator"><</span><span class="type"><a href="qgraphicsitem.html">QGraphicsItem</a></span> <span class="operator">*</span><span class="operator">></span> selected; selected <span class="operator">=</span> scene<span class="operator">-</span><span class="operator">></span>selectedItems(); foreach (<span class="type"><a href="qgraphicsitem.html">QGraphicsItem</a></span> <span class="operator">*</span>item<span class="operator">,</span> selected) { ItemBase <span class="operator">*</span>itemBase <span class="operator">=</span> qgraphicsitem_cast<span class="operator"><</span>ItemBase <span class="operator">*</span><span class="operator">></span>(item); <span class="keyword">if</span> (itemBase) <span class="keyword">delete</span> itemBase; } } <span class="type">void</span> ItemBase<span class="operator">::</span>growSelectedItems(<span class="type"><a href="qgraphicsscene.html">QGraphicsScene</a></span> <span class="operator">*</span>scene) { <span class="keyword">if</span> (<span class="operator">!</span>scene) <span class="keyword">return</span>; <span class="type"><a href="../qtcore/qlist.html">QList</a></span><span class="operator"><</span><span class="type"><a href="qgraphicsitem.html">QGraphicsItem</a></span> <span class="operator">*</span><span class="operator">></span> selected; selected <span class="operator">=</span> scene<span class="operator">-</span><span class="operator">></span>selectedItems(); foreach (<span class="type"><a href="qgraphicsitem.html">QGraphicsItem</a></span> <span class="operator">*</span>item<span class="operator">,</span> selected) { ItemBase <span class="operator">*</span>itemBase <span class="operator">=</span> qgraphicsitem_cast<span class="operator"><</span>ItemBase <span class="operator">*</span><span class="operator">></span>(item); <span class="keyword">if</span> (itemBase) { itemBase<span class="operator">-</span><span class="operator">></span>prepareGeometryChange(); itemBase<span class="operator">-</span><span class="operator">></span>m_size <span class="operator">*</span><span class="operator">=</span> <span class="number">2</span>; <span class="keyword">if</span> (itemBase<span class="operator">-</span><span class="operator">></span>m_size <span class="operator">></span> MAX_ITEM_SIZE) itemBase<span class="operator">-</span><span class="operator">></span>m_size <span class="operator">=</span> MAX_ITEM_SIZE; } } } <span class="type">void</span> ItemBase<span class="operator">::</span>shrinkSelectedItems(<span class="type"><a href="qgraphicsscene.html">QGraphicsScene</a></span> <span class="operator">*</span>scene) { <span class="keyword">if</span> (<span class="operator">!</span>scene) <span class="keyword">return</span>; <span class="type"><a href="../qtcore/qlist.html">QList</a></span><span class="operator"><</span><span class="type"><a href="qgraphicsitem.html">QGraphicsItem</a></span> <span class="operator">*</span><span class="operator">></span> selected; selected <span class="operator">=</span> scene<span class="operator">-</span><span class="operator">></span>selectedItems(); foreach (<span class="type"><a href="qgraphicsitem.html">QGraphicsItem</a></span> <span class="operator">*</span>item<span class="operator">,</span> selected) { ItemBase <span class="operator">*</span>itemBase <span class="operator">=</span> qgraphicsitem_cast<span class="operator"><</span>ItemBase <span class="operator">*</span><span class="operator">></span>(item); <span class="keyword">if</span> (itemBase) { itemBase<span class="operator">-</span><span class="operator">></span>prepareGeometryChange(); itemBase<span class="operator">-</span><span class="operator">></span>m_size <span class="operator">/</span><span class="operator">=</span> <span class="number">2</span>; <span class="keyword">if</span> (itemBase<span class="operator">-</span><span class="operator">></span>m_size <span class="operator"><</span> MIN_ITEM_SIZE) itemBase<span class="operator">-</span><span class="operator">></span>m_size <span class="operator">=</span> MIN_ITEM_SIZE; } } } <span class="type">void</span> ItemBase<span class="operator">::</span>mouseMoveEvent(<span class="type"><a href="qgraphicsscenemouseevent.html">QGraphicsSceneMouseEvent</a></span> <span class="operator">*</span>event) { <span class="keyword">if</span> (m_isResizing) { <span class="type">int</span> dx <span class="operator">=</span> <span class="type">int</span>(<span class="number">2.0</span> <span class="operator">*</span> event<span class="operator">-</span><span class="operator">></span>pos()<span class="operator">.</span>x()); <span class="type">int</span> dy <span class="operator">=</span> <span class="type">int</span>(<span class="number">2.0</span> <span class="operator">*</span> event<span class="operator">-</span><span class="operator">></span>pos()<span class="operator">.</span>y()); prepareGeometryChange(); m_size <span class="operator">=</span> (dx <span class="operator">></span> dy <span class="operator">?</span> dx : dy); <span class="keyword">if</span> (m_size <span class="operator"><</span> MIN_ITEM_SIZE) m_size <span class="operator">=</span> MIN_ITEM_SIZE; <span class="keyword">else</span> <span class="keyword">if</span> (m_size <span class="operator">></span> MAX_ITEM_SIZE) m_size <span class="operator">=</span> MAX_ITEM_SIZE; } <span class="keyword">else</span> { <span class="type"><a href="qgraphicsitem.html">QGraphicsItem</a></span><span class="operator">::</span>mouseMoveEvent(event); } } <span class="type">void</span> ItemBase<span class="operator">::</span>hoverMoveEvent(<span class="type"><a href="qgraphicsscenehoverevent.html">QGraphicsSceneHoverEvent</a></span> <span class="operator">*</span>event) { <span class="keyword">if</span> (m_isResizing <span class="operator">|</span><span class="operator">|</span> (isInResizeArea(event<span class="operator">-</span><span class="operator">></span>pos()) <span class="operator">&</span><span class="operator">&</span> isSelected())) setCursor(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>SizeFDiagCursor); <span class="keyword">else</span> setCursor(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>ArrowCursor); <span class="type"><a href="qgraphicsitem.html">QGraphicsItem</a></span><span class="operator">::</span>hoverMoveEvent(event); } <span class="type">void</span> ItemBase<span class="operator">::</span>mousePressEvent(<span class="type"><a href="qgraphicsscenemouseevent.html">QGraphicsSceneMouseEvent</a></span> <span class="operator">*</span>event) { <span class="keyword">static</span> <span class="type"><a href="../qtcore/qtglobal.html#qreal-typedef">qreal</a></span> z <span class="operator">=</span> <span class="number">0.0</span>; setZValue(z <span class="operator">+</span><span class="operator">=</span> <span class="number">1.0</span>); <span class="keyword">if</span> (event<span class="operator">-</span><span class="operator">></span>button() <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>LeftButton <span class="operator">&</span><span class="operator">&</span> isInResizeArea(event<span class="operator">-</span><span class="operator">></span>pos())) { m_isResizing <span class="operator">=</span> <span class="keyword">true</span>; } <span class="keyword">else</span> { <span class="type"><a href="qgraphicsitem.html">QGraphicsItem</a></span><span class="operator">::</span>mousePressEvent(event); } } <span class="type">void</span> ItemBase<span class="operator">::</span>mouseReleaseEvent(<span class="type"><a href="qgraphicsscenemouseevent.html">QGraphicsSceneMouseEvent</a></span> <span class="operator">*</span>event) { <span class="keyword">if</span> (event<span class="operator">-</span><span class="operator">></span>button() <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>LeftButton <span class="operator">&</span><span class="operator">&</span> m_isResizing) { m_isResizing <span class="operator">=</span> <span class="keyword">false</span>; } <span class="keyword">else</span> { <span class="type"><a href="qgraphicsitem.html">QGraphicsItem</a></span><span class="operator">::</span>mouseReleaseEvent(event); } } <span class="type">void</span> ItemBase<span class="operator">::</span>keyPressEvent(<span class="type"><a href="../qtgui/qkeyevent.html">QKeyEvent</a></span> <span class="operator">*</span>event) { <span class="keyword">switch</span> (event<span class="operator">-</span><span class="operator">></span>key()) { <span class="keyword">case</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>Key_Delete: deleteSelectedItems(scene()); <span class="keyword">break</span>; <span class="keyword">case</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>Key_Insert: duplicateSelectedItems(scene()); <span class="keyword">break</span>; <span class="keyword">case</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>Key_Plus: growSelectedItems(scene()); <span class="keyword">break</span>; <span class="keyword">case</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>Key_Minus: shrinkSelectedItems(scene()); <span class="keyword">break</span>; <span class="keyword">default</span>: <span class="type"><a href="qgraphicsitem.html">QGraphicsItem</a></span><span class="operator">::</span>keyPressEvent(event); <span class="keyword">break</span>; } } <span class="type">void</span> ItemBase<span class="operator">::</span>wheelEvent(<span class="type"><a href="qgraphicsscenewheelevent.html">QGraphicsSceneWheelEvent</a></span> <span class="operator">*</span>event) { prepareGeometryChange(); m_size <span class="operator">=</span> <span class="type">int</span>(m_size <span class="operator">*</span> <a href="../qtcore/qtmath.html#qExp">qExp</a>(<span class="operator">-</span>event<span class="operator">-</span><span class="operator">></span>delta() <span class="operator">/</span> <span class="number">600.0</span>)); <span class="keyword">if</span> (m_size <span class="operator">></span> MAX_ITEM_SIZE) m_size <span class="operator">=</span> MAX_ITEM_SIZE; <span class="keyword">else</span> <span class="keyword">if</span> (m_size <span class="operator"><</span> MIN_ITEM_SIZE) m_size <span class="operator">=</span> MIN_ITEM_SIZE; } <span class="type">int</span> ItemBase<span class="operator">::</span>type() <span class="keyword">const</span> { <span class="keyword">return</span> Type; } bool ItemBase<span class="operator">::</span>isInResizeArea(<span class="keyword">const</span> <span class="type"><a href="../qtcore/qpointf.html">QPointF</a></span> <span class="operator">&</span>pos) { <span class="keyword">return</span> (<span class="operator">-</span>pos<span class="operator">.</span>y() <span class="operator"><</span> pos<span class="operator">.</span>x() <span class="operator">-</span> m_size <span class="operator">+</span> <span class="number">9</span>); } <span class="comment">//============================================================================//</span> <span class="comment">// QtBox //</span> <span class="comment">//============================================================================//</span> <span class="type">QtBox</span><span class="operator">::</span><span class="type">QtBox</span>(<span class="type">int</span> size<span class="operator">,</span> <span class="type">int</span> x<span class="operator">,</span> <span class="type">int</span> y) : ItemBase(size<span class="operator">,</span> x<span class="operator">,</span> y)<span class="operator">,</span> m_texture(<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> <span class="number">8</span>; <span class="operator">+</span><span class="operator">+</span>i) { m_vertices<span class="operator">[</span>i<span class="operator">]</span><span class="operator">.</span>setX(i <span class="operator">&</span> <span class="number">1</span> <span class="operator">?</span> <span class="number">0.5f</span> : <span class="operator">-</span><span class="number">0.5f</span>); m_vertices<span class="operator">[</span>i<span class="operator">]</span><span class="operator">.</span>setY(i <span class="operator">&</span> <span class="number">2</span> <span class="operator">?</span> <span class="number">0.5f</span> : <span class="operator">-</span><span class="number">0.5f</span>); m_vertices<span class="operator">[</span>i<span class="operator">]</span><span class="operator">.</span>setZ(i <span class="operator">&</span> <span class="number">4</span> <span class="operator">?</span> <span class="number">0.5f</span> : <span class="operator">-</span><span class="number">0.5f</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> <span class="number">4</span>; <span class="operator">+</span><span class="operator">+</span>i) { m_texCoords<span class="operator">[</span>i<span class="operator">]</span><span class="operator">.</span>setX(i <span class="operator">&</span> <span class="number">1</span> <span class="operator">?</span> <span class="number">1.0f</span> : <span class="number">0.0f</span>); m_texCoords<span class="operator">[</span>i<span class="operator">]</span><span class="operator">.</span>setY(i <span class="operator">&</span> <span class="number">2</span> <span class="operator">?</span> <span class="number">1.0f</span> : <span class="number">0.0f</span>); } m_normals<span class="operator">[</span><span class="number">0</span><span class="operator">]</span> <span class="operator">=</span> QVector3D(<span class="operator">-</span><span class="number">1.0f</span><span class="operator">,</span> <span class="number">0.0f</span><span class="operator">,</span> <span class="number">0.0f</span>); m_normals<span class="operator">[</span><span class="number">1</span><span class="operator">]</span> <span class="operator">=</span> QVector3D(<span class="number">1.0f</span><span class="operator">,</span> <span class="number">0.0f</span><span class="operator">,</span> <span class="number">0.0f</span>); m_normals<span class="operator">[</span><span class="number">2</span><span class="operator">]</span> <span class="operator">=</span> QVector3D(<span class="number">0.0f</span><span class="operator">,</span> <span class="operator">-</span><span class="number">1.0f</span><span class="operator">,</span> <span class="number">0.0f</span>); m_normals<span class="operator">[</span><span class="number">3</span><span class="operator">]</span> <span class="operator">=</span> QVector3D(<span class="number">0.0f</span><span class="operator">,</span> <span class="number">1.0f</span><span class="operator">,</span> <span class="number">0.0f</span>); m_normals<span class="operator">[</span><span class="number">4</span><span class="operator">]</span> <span class="operator">=</span> QVector3D(<span class="number">0.0f</span><span class="operator">,</span> <span class="number">0.0f</span><span class="operator">,</span> <span class="operator">-</span><span class="number">1.0f</span>); m_normals<span class="operator">[</span><span class="number">5</span><span class="operator">]</span> <span class="operator">=</span> QVector3D(<span class="number">0.0f</span><span class="operator">,</span> <span class="number">0.0f</span><span class="operator">,</span> <span class="number">1.0f</span>); } <span class="type">QtBox</span><span class="operator">::</span><span class="operator">~</span><span class="type">QtBox</span>() { <span class="keyword">if</span> (m_texture) <span class="keyword">delete</span> m_texture; } ItemBase <span class="operator">*</span><span class="type">QtBox</span><span class="operator">::</span>createNew(<span class="type">int</span> size<span class="operator">,</span> <span class="type">int</span> x<span class="operator">,</span> <span class="type">int</span> y) { <span class="keyword">return</span> <span class="keyword">new</span> <span class="type">QtBox</span>(size<span class="operator">,</span> x<span class="operator">,</span> y); } <span class="type">void</span> <span class="type">QtBox</span><span class="operator">::</span>paint(<span class="type"><a href="../qtgui/qpainter.html">QPainter</a></span> <span class="operator">*</span>painter<span class="operator">,</span> <span class="keyword">const</span> <span class="type"><a href="qstyleoptiongraphicsitem.html">QStyleOptionGraphicsItem</a></span> <span class="operator">*</span>option<span class="operator">,</span> <span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>widget) { <span class="type"><a href="../qtcore/qrectf.html">QRectF</a></span> rect <span class="operator">=</span> boundingRect()<span class="operator">.</span>translated(pos()); <span class="type">float</span> width <span class="operator">=</span> <span class="type">float</span>(painter<span class="operator">-</span><span class="operator">></span>device()<span class="operator">-</span><span class="operator">></span>width()); <span class="type">float</span> height <span class="operator">=</span> <span class="type">float</span>(painter<span class="operator">-</span><span class="operator">></span>device()<span class="operator">-</span><span class="operator">></span>height()); <span class="type">float</span> left <span class="operator">=</span> <span class="number">2.0f</span> <span class="operator">*</span> <span class="type">float</span>(rect<span class="operator">.</span>left()) <span class="operator">/</span> width <span class="operator">-</span> <span class="number">1.0f</span>; <span class="type">float</span> right <span class="operator">=</span> <span class="number">2.0f</span> <span class="operator">*</span> <span class="type">float</span>(rect<span class="operator">.</span>right()) <span class="operator">/</span> width <span class="operator">-</span> <span class="number">1.0f</span>; <span class="type">float</span> top <span class="operator">=</span> <span class="number">1.0f</span> <span class="operator">-</span> <span class="number">2.0f</span> <span class="operator">*</span> <span class="type">float</span>(rect<span class="operator">.</span>top()) <span class="operator">/</span> height; <span class="type">float</span> bottom <span class="operator">=</span> <span class="number">1.0f</span> <span class="operator">-</span> <span class="number">2.0f</span> <span class="operator">*</span> <span class="type">float</span>(rect<span class="operator">.</span>bottom()) <span class="operator">/</span> height; <span class="type">float</span> moveToRectMatrix<span class="operator">[</span><span class="operator">]</span> <span class="operator">=</span> { <span class="number">0.5f</span> <span class="operator">*</span> (right <span class="operator">-</span> left)<span class="operator">,</span> <span class="number">0.0f</span><span class="operator">,</span> <span class="number">0.0f</span><span class="operator">,</span> <span class="number">0.0f</span><span class="operator">,</span> <span class="number">0.0f</span><span class="operator">,</span> <span class="number">0.5f</span> <span class="operator">*</span> (bottom <span class="operator">-</span> top)<span class="operator">,</span> <span class="number">0.0f</span><span class="operator">,</span> <span class="number">0.0f</span><span class="operator">,</span> <span class="number">0.0f</span><span class="operator">,</span> <span class="number">0.0f</span><span class="operator">,</span> <span class="number">1.0f</span><span class="operator">,</span> <span class="number">0.0f</span><span class="operator">,</span> <span class="number">0.5f</span> <span class="operator">*</span> (right <span class="operator">+</span> left)<span class="operator">,</span> <span class="number">0.5f</span> <span class="operator">*</span> (bottom <span class="operator">+</span> top)<span class="operator">,</span> <span class="number">0.0f</span><span class="operator">,</span> <span class="number">1.0f</span> }; painter<span class="operator">-</span><span class="operator">></span>beginNativePainting(); glMatrixMode(GL_PROJECTION); glPushMatrix(); glLoadMatrixf(moveToRectMatrix); qgluPerspective(<span class="number">60.0</span><span class="operator">,</span> <span class="number">1.0</span><span class="operator">,</span> <span class="number">0.01</span><span class="operator">,</span> <span class="number">10.0</span>); glMatrixMode(GL_MODELVIEW); glPushMatrix(); glLoadIdentity(); <span class="comment">//glEnable(GL_DEPTH_TEST);</span> glEnable(GL_CULL_FACE); glEnable(GL_LIGHTING); glEnable(GL_COLOR_MATERIAL); glEnable(GL_NORMALIZE); <span class="keyword">if</span>(m_texture <span class="operator">=</span><span class="operator">=</span> <span class="number">0</span>) m_texture <span class="operator">=</span> <span class="keyword">new</span> GLTexture2D(<span class="string">":/res/boxes/qt-logo.jpg"</span><span class="operator">,</span> <span class="number">64</span><span class="operator">,</span> <span class="number">64</span>); m_texture<span class="operator">-</span><span class="operator">></span>bind(); glEnable(GL_TEXTURE_2D); glColorMaterial(GL_FRONT_AND_BACK<span class="operator">,</span> GL_AMBIENT_AND_DIFFUSE); <span class="type">float</span> lightColour<span class="operator">[</span><span class="operator">]</span> <span class="operator">=</span> {<span class="number">1.0f</span><span class="operator">,</span> <span class="number">1.0f</span><span class="operator">,</span> <span class="number">1.0f</span><span class="operator">,</span> <span class="number">1.0f</span>}; <span class="type">float</span> lightDir<span class="operator">[</span><span class="operator">]</span> <span class="operator">=</span> {<span class="number">0.0f</span><span class="operator">,</span> <span class="number">0.0f</span><span class="operator">,</span> <span class="number">1.0f</span><span class="operator">,</span> <span class="number">0.0f</span>}; glLightfv(GL_LIGHT0<span class="operator">,</span> GL_DIFFUSE<span class="operator">,</span> lightColour); glLightfv(GL_LIGHT0<span class="operator">,</span> GL_POSITION<span class="operator">,</span> lightDir); glEnable(GL_LIGHT0); glTranslatef(<span class="number">0.0f</span><span class="operator">,</span> <span class="number">0.0f</span><span class="operator">,</span> <span class="operator">-</span><span class="number">1.5f</span>); glRotatef(ROTATE_SPEED_X <span class="operator">*</span> m_startTime<span class="operator">.</span>msecsTo(<span class="type"><a href="../qtcore/qtime.html">QTime</a></span><span class="operator">::</span>currentTime())<span class="operator">,</span> <span class="number">1.0f</span><span class="operator">,</span> <span class="number">0.0f</span><span class="operator">,</span> <span class="number">0.0f</span>); glRotatef(ROTATE_SPEED_Y <span class="operator">*</span> m_startTime<span class="operator">.</span>msecsTo(<span class="type"><a href="../qtcore/qtime.html">QTime</a></span><span class="operator">::</span>currentTime())<span class="operator">,</span> <span class="number">0.0f</span><span class="operator">,</span> <span class="number">1.0f</span><span class="operator">,</span> <span class="number">0.0f</span>); glRotatef(ROTATE_SPEED_Z <span class="operator">*</span> m_startTime<span class="operator">.</span>msecsTo(<span class="type"><a href="../qtcore/qtime.html">QTime</a></span><span class="operator">::</span>currentTime())<span class="operator">,</span> <span class="number">0.0f</span><span class="operator">,</span> <span class="number">0.0f</span><span class="operator">,</span> <span class="number">1.0f</span>); <span class="type">int</span> dt <span class="operator">=</span> m_startTime<span class="operator">.</span>msecsTo(<span class="type"><a href="../qtcore/qtime.html">QTime</a></span><span class="operator">::</span>currentTime()); <span class="keyword">if</span> (dt <span class="operator"><</span> <span class="number">500</span>) glScalef(dt <span class="operator">/</span> <span class="number">500.0f</span><span class="operator">,</span> dt <span class="operator">/</span> <span class="number">500.0f</span><span class="operator">,</span> dt <span class="operator">/</span> <span class="number">500.0f</span>); <span class="keyword">for</span> (<span class="type">int</span> dir <span class="operator">=</span> <span class="number">0</span>; dir <span class="operator"><</span> <span class="number">3</span>; <span class="operator">+</span><span class="operator">+</span>dir) { glColor4f(<span class="number">1.0f</span><span class="operator">,</span> <span class="number">1.0f</span><span class="operator">,</span> <span class="number">1.0f</span><span class="operator">,</span> <span class="number">1.0</span>); glBegin(GL_TRIANGLE_STRIP); glNormal3fv(<span class="keyword">reinterpret_cast</span><span class="operator"><</span><span class="type">float</span> <span class="operator">*</span><span class="operator">></span>(<span class="operator">&</span>m_normals<span class="operator">[</span><span class="number">2</span> <span class="operator">*</span> dir <span class="operator">+</span> <span class="number">0</span><span class="operator">]</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> <span class="number">2</span>; <span class="operator">+</span><span class="operator">+</span>i) { <span class="keyword">for</span> (<span class="type">int</span> j <span class="operator">=</span> <span class="number">0</span>; j <span class="operator"><</span> <span class="number">2</span>; <span class="operator">+</span><span class="operator">+</span>j) { glTexCoord2fv(<span class="keyword">reinterpret_cast</span><span class="operator"><</span><span class="type">float</span> <span class="operator">*</span><span class="operator">></span>(<span class="operator">&</span>m_texCoords<span class="operator">[</span>(j <span class="operator"><</span><span class="operator"><</span> <span class="number">1</span>) <span class="operator">|</span> i<span class="operator">]</span>)); glVertex3fv(<span class="keyword">reinterpret_cast</span><span class="operator"><</span><span class="type">float</span> <span class="operator">*</span><span class="operator">></span>(<span class="operator">&</span>m_vertices<span class="operator">[</span>(i <span class="operator"><</span><span class="operator"><</span> ((dir <span class="operator">+</span> <span class="number">2</span>) <span class="operator">%</span> <span class="number">3</span>)) <span class="operator">|</span> (j <span class="operator"><</span><span class="operator"><</span> ((dir <span class="operator">+</span> <span class="number">1</span>) <span class="operator">%</span> <span class="number">3</span>))<span class="operator">]</span>)); } } glEnd(); glBegin(GL_TRIANGLE_STRIP); glNormal3fv(<span class="keyword">reinterpret_cast</span><span class="operator"><</span><span class="type">float</span> <span class="operator">*</span><span class="operator">></span>(<span class="operator">&</span>m_normals<span class="operator">[</span><span class="number">2</span> <span class="operator">*</span> dir <span class="operator">+</span> <span class="number">1</span><span class="operator">]</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> <span class="number">2</span>; <span class="operator">+</span><span class="operator">+</span>i) { <span class="keyword">for</span> (<span class="type">int</span> j <span class="operator">=</span> <span class="number">0</span>; j <span class="operator"><</span> <span class="number">2</span>; <span class="operator">+</span><span class="operator">+</span>j) { glTexCoord2fv(<span class="keyword">reinterpret_cast</span><span class="operator"><</span><span class="type">float</span> <span class="operator">*</span><span class="operator">></span>(<span class="operator">&</span>m_texCoords<span class="operator">[</span>(j <span class="operator"><</span><span class="operator"><</span> <span class="number">1</span>) <span class="operator">|</span> i<span class="operator">]</span>)); glVertex3fv(<span class="keyword">reinterpret_cast</span><span class="operator"><</span><span class="type">float</span> <span class="operator">*</span><span class="operator">></span>(<span class="operator">&</span>m_vertices<span class="operator">[</span>(<span class="number">1</span> <span class="operator"><</span><span class="operator"><</span> dir) <span class="operator">|</span> (i <span class="operator"><</span><span class="operator"><</span> ((dir <span class="operator">+</span> <span class="number">1</span>) <span class="operator">%</span> <span class="number">3</span>)) <span class="operator">|</span> (j <span class="operator"><</span><span class="operator"><</span> ((dir <span class="operator">+</span> <span class="number">2</span>) <span class="operator">%</span> <span class="number">3</span>))<span class="operator">]</span>)); } } glEnd(); } m_texture<span class="operator">-</span><span class="operator">></span>unbind(); <span class="comment">//glDisable(GL_DEPTH_TEST);</span> glDisable(GL_CULL_FACE); glDisable(GL_LIGHTING); glDisable(GL_COLOR_MATERIAL); glDisable(GL_TEXTURE_2D); glDisable(GL_LIGHT0); glDisable(GL_NORMALIZE); glPopMatrix(); glMatrixMode(GL_PROJECTION); glPopMatrix(); painter<span class="operator">-</span><span class="operator">></span>endNativePainting(); ItemBase<span class="operator">::</span>paint(painter<span class="operator">,</span> option<span class="operator">,</span> widget); } <span class="comment">//============================================================================//</span> <span class="comment">// CircleItem //</span> <span class="comment">//============================================================================//</span> CircleItem<span class="operator">::</span>CircleItem(<span class="type">int</span> size<span class="operator">,</span> <span class="type">int</span> x<span class="operator">,</span> <span class="type">int</span> y) : ItemBase(size<span class="operator">,</span> x<span class="operator">,</span> y) { m_color <span class="operator">=</span> <span class="type"><a href="../qtgui/qcolor.html">QColor</a></span><span class="operator">::</span>fromHsv(<span class="type"><a href="../qtcore/qrandomgenerator.html">QRandomGenerator</a></span><span class="operator">::</span>global()<span class="operator">-</span><span class="operator">></span>bounded(<span class="number">360</span>)<span class="operator">,</span> <span class="number">255</span><span class="operator">,</span> <span class="number">255</span>); } <span class="type">void</span> CircleItem<span class="operator">::</span>paint(<span class="type"><a href="../qtgui/qpainter.html">QPainter</a></span> <span class="operator">*</span>painter<span class="operator">,</span> <span class="keyword">const</span> <span class="type"><a href="qstyleoptiongraphicsitem.html">QStyleOptionGraphicsItem</a></span> <span class="operator">*</span>option<span class="operator">,</span> <span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>widget) { <span class="type">int</span> dt <span class="operator">=</span> m_startTime<span class="operator">.</span>msecsTo(<span class="type"><a href="../qtcore/qtime.html">QTime</a></span><span class="operator">::</span>currentTime()); <span class="type"><a href="../qtcore/qtglobal.html#qreal-typedef">qreal</a></span> r0 <span class="operator">=</span> <span class="number">0.5</span> <span class="operator">*</span> m_size <span class="operator">*</span> (<span class="number">1.0</span> <span class="operator">-</span> <a href="../qtcore/qtmath.html#qExp">qExp</a>(<span class="operator">-</span><span class="number">0.001</span> <span class="operator">*</span> ((dt <span class="operator">+</span> <span class="number">3800</span>) <span class="operator">%</span> <span class="number">4000</span>))); <span class="type"><a href="../qtcore/qtglobal.html#qreal-typedef">qreal</a></span> r1 <span class="operator">=</span> <span class="number">0.5</span> <span class="operator">*</span> m_size <span class="operator">*</span> (<span class="number">1.0</span> <span class="operator">-</span> <a href="../qtcore/qtmath.html#qExp">qExp</a>(<span class="operator">-</span><span class="number">0.001</span> <span class="operator">*</span> ((dt <span class="operator">+</span> <span class="number">0</span>) <span class="operator">%</span> <span class="number">4000</span>))); <span class="type"><a href="../qtcore/qtglobal.html#qreal-typedef">qreal</a></span> r2 <span class="operator">=</span> <span class="number">0.5</span> <span class="operator">*</span> m_size <span class="operator">*</span> (<span class="number">1.0</span> <span class="operator">-</span> <a href="../qtcore/qtmath.html#qExp">qExp</a>(<span class="operator">-</span><span class="number">0.001</span> <span class="operator">*</span> ((dt <span class="operator">+</span> <span class="number">1800</span>) <span class="operator">%</span> <span class="number">4000</span>))); <span class="type"><a href="../qtcore/qtglobal.html#qreal-typedef">qreal</a></span> r3 <span class="operator">=</span> <span class="number">0.5</span> <span class="operator">*</span> m_size <span class="operator">*</span> (<span class="number">1.0</span> <span class="operator">-</span> <a href="../qtcore/qtmath.html#qExp">qExp</a>(<span class="operator">-</span><span class="number">0.001</span> <span class="operator">*</span> ((dt <span class="operator">+</span> <span class="number">2000</span>) <span class="operator">%</span> <span class="number">4000</span>))); <span class="keyword">if</span> (r0 <span class="operator">></span> r1) r0 <span class="operator">=</span> <span class="number">0.0</span>; <span class="keyword">if</span> (r2 <span class="operator">></span> r3) r2 <span class="operator">=</span> <span class="number">0.0</span>; <span class="type"><a href="../qtgui/qpainterpath.html">QPainterPath</a></span> path; path<span class="operator">.</span>moveTo(r1<span class="operator">,</span> <span class="number">0.0</span>); path<span class="operator">.</span>arcTo(<span class="operator">-</span>r1<span class="operator">,</span> <span class="operator">-</span>r1<span class="operator">,</span> <span class="number">2</span> <span class="operator">*</span> r1<span class="operator">,</span> <span class="number">2</span> <span class="operator">*</span> r1<span class="operator">,</span> <span class="number">0.0</span><span class="operator">,</span> <span class="number">360.0</span>); path<span class="operator">.</span>lineTo(r0<span class="operator">,</span> <span class="number">0.0</span>); path<span class="operator">.</span>arcTo(<span class="operator">-</span>r0<span class="operator">,</span> <span class="operator">-</span>r0<span class="operator">,</span> <span class="number">2</span> <span class="operator">*</span> r0<span class="operator">,</span> <span class="number">2</span> <span class="operator">*</span> r0<span class="operator">,</span> <span class="number">0.0</span><span class="operator">,</span> <span class="operator">-</span><span class="number">360.0</span>); path<span class="operator">.</span>closeSubpath(); path<span class="operator">.</span>moveTo(r3<span class="operator">,</span> <span class="number">0.0</span>); path<span class="operator">.</span>arcTo(<span class="operator">-</span>r3<span class="operator">,</span> <span class="operator">-</span>r3<span class="operator">,</span> <span class="number">2</span> <span class="operator">*</span> r3<span class="operator">,</span> <span class="number">2</span> <span class="operator">*</span> r3<span class="operator">,</span> <span class="number">0.0</span><span class="operator">,</span> <span class="number">360.0</span>); path<span class="operator">.</span>lineTo(r0<span class="operator">,</span> <span class="number">0.0</span>); path<span class="operator">.</span>arcTo(<span class="operator">-</span>r2<span class="operator">,</span> <span class="operator">-</span>r2<span class="operator">,</span> <span class="number">2</span> <span class="operator">*</span> r2<span class="operator">,</span> <span class="number">2</span> <span class="operator">*</span> r2<span class="operator">,</span> <span class="number">0.0</span><span class="operator">,</span> <span class="operator">-</span><span class="number">360.0</span>); path<span class="operator">.</span>closeSubpath(); painter<span class="operator">-</span><span class="operator">></span>setRenderHint(<span class="type"><a href="../qtgui/qpainter.html">QPainter</a></span><span class="operator">::</span>Antialiasing<span class="operator">,</span> <span class="keyword">true</span>); painter<span class="operator">-</span><span class="operator">></span>setBrush(<span class="type"><a href="../qtgui/qbrush.html">QBrush</a></span>(m_color)); painter<span class="operator">-</span><span class="operator">></span>setPen(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>NoPen); painter<span class="operator">-</span><span class="operator">></span>drawPath(path); painter<span class="operator">-</span><span class="operator">></span>setBrush(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>NoBrush); painter<span class="operator">-</span><span class="operator">></span>setPen(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>SolidLine); painter<span class="operator">-</span><span class="operator">></span>setRenderHint(<span class="type"><a href="../qtgui/qpainter.html">QPainter</a></span><span class="operator">::</span>Antialiasing<span class="operator">,</span> <span class="keyword">false</span>); ItemBase<span class="operator">::</span>paint(painter<span class="operator">,</span> option<span class="operator">,</span> widget); } ItemBase <span class="operator">*</span>CircleItem<span class="operator">::</span>createNew(<span class="type">int</span> size<span class="operator">,</span> <span class="type">int</span> x<span class="operator">,</span> <span class="type">int</span> y) { <span class="keyword">return</span> <span class="keyword">new</span> CircleItem(size<span class="operator">,</span> x<span class="operator">,</span> y); } <span class="comment">//============================================================================//</span> <span class="comment">// SquareItem //</span> <span class="comment">//============================================================================//</span> SquareItem<span class="operator">::</span>SquareItem(<span class="type">int</span> size<span class="operator">,</span> <span class="type">int</span> x<span class="operator">,</span> <span class="type">int</span> y) : ItemBase(size<span class="operator">,</span> x<span class="operator">,</span> y) { m_image <span class="operator">=</span> <span class="type"><a href="../qtgui/qpixmap.html">QPixmap</a></span>(<span class="string">":/res/boxes/square.jpg"</span>); } <span class="type">void</span> SquareItem<span class="operator">::</span>paint(<span class="type"><a href="../qtgui/qpainter.html">QPainter</a></span> <span class="operator">*</span>painter<span class="operator">,</span> <span class="keyword">const</span> <span class="type"><a href="qstyleoptiongraphicsitem.html">QStyleOptionGraphicsItem</a></span> <span class="operator">*</span>option<span class="operator">,</span> <span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>widget) { <span class="type">int</span> dt <span class="operator">=</span> m_startTime<span class="operator">.</span>msecsTo(<span class="type"><a href="../qtcore/qtime.html">QTime</a></span><span class="operator">::</span>currentTime()); <span class="type"><a href="../qtgui/qtransform.html">QTransform</a></span> oldTransform <span class="operator">=</span> painter<span class="operator">-</span><span class="operator">></span>worldTransform(); <span class="type">int</span> dtMod <span class="operator">=</span> dt <span class="operator">%</span> <span class="number">2000</span>; <span class="type"><a href="../qtcore/qtglobal.html#qreal-typedef">qreal</a></span> amp <span class="operator">=</span> <span class="number">0.002</span> <span class="operator">*</span> (dtMod <span class="operator"><</span> <span class="number">1000</span> <span class="operator">?</span> dtMod : <span class="number">2000</span> <span class="operator">-</span> dtMod) <span class="operator">-</span> <span class="number">1.0</span>; <span class="type"><a href="../qtcore/qtglobal.html#qreal-typedef">qreal</a></span> scale <span class="operator">=</span> <span class="number">0.6</span> <span class="operator">+</span> <span class="number">0.2</span> <span class="operator">*</span> amp <span class="operator">*</span> amp; painter<span class="operator">-</span><span class="operator">></span>setWorldTransform(<span class="type"><a href="../qtgui/qtransform.html">QTransform</a></span>()<span class="operator">.</span>rotate(<span class="number">15.0</span> <span class="operator">*</span> amp)<span class="operator">.</span>scale(scale<span class="operator">,</span> scale)<span class="operator">,</span> <span class="keyword">true</span>); painter<span class="operator">-</span><span class="operator">></span>drawPixmap(<span class="operator">-</span>m_size <span class="operator">/</span> <span class="number">2</span><span class="operator">,</span> <span class="operator">-</span>m_size <span class="operator">/</span> <span class="number">2</span><span class="operator">,</span> m_size<span class="operator">,</span> m_size<span class="operator">,</span> m_image); painter<span class="operator">-</span><span class="operator">></span>setWorldTransform(oldTransform<span class="operator">,</span> <span class="keyword">false</span>); ItemBase<span class="operator">::</span>paint(painter<span class="operator">,</span> option<span class="operator">,</span> widget); } ItemBase <span class="operator">*</span>SquareItem<span class="operator">::</span>createNew(<span class="type">int</span> size<span class="operator">,</span> <span class="type">int</span> x<span class="operator">,</span> <span class="type">int</span> y) { <span class="keyword">return</span> <span class="keyword">new</span> SquareItem(size<span class="operator">,</span> x<span class="operator">,</span> y); } </pre> </div> <!-- @@@graphicsview/boxes/qtbox.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>