<?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>mainwindow.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-diagramscene-example.html">Diagram Scene Example</a></td><td >mainwindow.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">mainwindow.cpp Example File</h1> <span class="subtitle">graphicsview/diagramscene/mainwindow.cpp</span> <!-- $$$graphicsview/diagramscene/mainwindow.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 "arrow.h"</span> <span class="preprocessor">#include "diagramitem.h"</span> <span class="preprocessor">#include "diagramscene.h"</span> <span class="preprocessor">#include "diagramtextitem.h"</span> <span class="preprocessor">#include "mainwindow.h"</span> <span class="preprocessor">#include <QtWidgets></span> <span class="keyword">const</span> <span class="type">int</span> InsertTextButton <span class="operator">=</span> <span class="number">10</span>; MainWindow<span class="operator">::</span>MainWindow() { createActions(); createToolBox(); createMenus(); scene <span class="operator">=</span> <span class="keyword">new</span> DiagramScene(itemMenu<span class="operator">,</span> <span class="keyword">this</span>); scene<span class="operator">-</span><span class="operator">></span>setSceneRect(<span class="type"><a href="../qtcore/qrectf.html">QRectF</a></span>(<span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">5000</span><span class="operator">,</span> <span class="number">5000</span>)); connect(scene<span class="operator">,</span> SIGNAL(itemInserted(DiagramItem<span class="operator">*</span>))<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(itemInserted(DiagramItem<span class="operator">*</span>))); connect(scene<span class="operator">,</span> SIGNAL(textInserted(<span class="type"><a href="qgraphicstextitem.html">QGraphicsTextItem</a></span><span class="operator">*</span>))<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(textInserted(<span class="type"><a href="qgraphicstextitem.html">QGraphicsTextItem</a></span><span class="operator">*</span>))); connect(scene<span class="operator">,</span> SIGNAL(itemSelected(<span class="type"><a href="qgraphicsitem.html">QGraphicsItem</a></span><span class="operator">*</span>))<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(itemSelected(<span class="type"><a href="qgraphicsitem.html">QGraphicsItem</a></span><span class="operator">*</span>))); createToolbars(); <span class="type"><a href="qhboxlayout.html">QHBoxLayout</a></span> <span class="operator">*</span>layout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qhboxlayout.html">QHBoxLayout</a></span>; layout<span class="operator">-</span><span class="operator">></span>addWidget(toolBox); view <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qgraphicsview.html">QGraphicsView</a></span>(scene); layout<span class="operator">-</span><span class="operator">></span>addWidget(view); <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>; widget<span class="operator">-</span><span class="operator">></span>setLayout(layout); setCentralWidget(widget); setWindowTitle(tr(<span class="string">"Diagramscene"</span>)); setUnifiedTitleAndToolBarOnMac(<span class="keyword">true</span>); } <span class="type">void</span> MainWindow<span class="operator">::</span>backgroundButtonGroupClicked(<span class="type"><a href="qabstractbutton.html">QAbstractButton</a></span> <span class="operator">*</span>button) { <span class="type"><a href="../qtcore/qlist.html">QList</a></span><span class="operator"><</span><span class="type"><a href="qabstractbutton.html">QAbstractButton</a></span> <span class="operator">*</span><span class="operator">></span> buttons <span class="operator">=</span> backgroundButtonGroup<span class="operator">-</span><span class="operator">></span>buttons(); foreach (<span class="type"><a href="qabstractbutton.html">QAbstractButton</a></span> <span class="operator">*</span>myButton<span class="operator">,</span> buttons) { <span class="keyword">if</span> (myButton <span class="operator">!</span><span class="operator">=</span> button) button<span class="operator">-</span><span class="operator">></span>setChecked(<span class="keyword">false</span>); } <span class="type"><a href="../qtcore/qstring.html">QString</a></span> text <span class="operator">=</span> button<span class="operator">-</span><span class="operator">></span>text(); <span class="keyword">if</span> (text <span class="operator">=</span><span class="operator">=</span> tr(<span class="string">"Blue Grid"</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/background1.png"</span>)); <span class="keyword">else</span> <span class="keyword">if</span> (text <span class="operator">=</span><span class="operator">=</span> tr(<span class="string">"White Grid"</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/background2.png"</span>)); <span class="keyword">else</span> <span class="keyword">if</span> (text <span class="operator">=</span><span class="operator">=</span> tr(<span class="string">"Gray Grid"</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/background3.png"</span>)); <span class="keyword">else</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/background4.png"</span>)); scene<span class="operator">-</span><span class="operator">></span>update(); view<span class="operator">-</span><span class="operator">></span>update(); } <span class="type">void</span> MainWindow<span class="operator">::</span>buttonGroupClicked(<span class="type">int</span> id) { <span class="type"><a href="../qtcore/qlist.html">QList</a></span><span class="operator"><</span><span class="type"><a href="qabstractbutton.html">QAbstractButton</a></span> <span class="operator">*</span><span class="operator">></span> buttons <span class="operator">=</span> buttonGroup<span class="operator">-</span><span class="operator">></span>buttons(); foreach (<span class="type"><a href="qabstractbutton.html">QAbstractButton</a></span> <span class="operator">*</span>button<span class="operator">,</span> buttons) { <span class="keyword">if</span> (buttonGroup<span class="operator">-</span><span class="operator">></span>button(id) <span class="operator">!</span><span class="operator">=</span> button) button<span class="operator">-</span><span class="operator">></span>setChecked(<span class="keyword">false</span>); } <span class="keyword">if</span> (id <span class="operator">=</span><span class="operator">=</span> InsertTextButton) { scene<span class="operator">-</span><span class="operator">></span>setMode(DiagramScene<span class="operator">::</span>InsertText); } <span class="keyword">else</span> { scene<span class="operator">-</span><span class="operator">></span>setItemType(DiagramItem<span class="operator">::</span>DiagramType(id)); scene<span class="operator">-</span><span class="operator">></span>setMode(DiagramScene<span class="operator">::</span>InsertItem); } } <span class="type">void</span> MainWindow<span class="operator">::</span>deleteItem() { foreach (<span class="type"><a href="qgraphicsitem.html">QGraphicsItem</a></span> <span class="operator">*</span>item<span class="operator">,</span> scene<span class="operator">-</span><span class="operator">></span>selectedItems()) { <span class="keyword">if</span> (item<span class="operator">-</span><span class="operator">></span>type() <span class="operator">=</span><span class="operator">=</span> Arrow<span class="operator">::</span>Type) { scene<span class="operator">-</span><span class="operator">></span>removeItem(item); Arrow <span class="operator">*</span>arrow <span class="operator">=</span> qgraphicsitem_cast<span class="operator"><</span>Arrow <span class="operator">*</span><span class="operator">></span>(item); arrow<span class="operator">-</span><span class="operator">></span>startItem()<span class="operator">-</span><span class="operator">></span>removeArrow(arrow); arrow<span class="operator">-</span><span class="operator">></span>endItem()<span class="operator">-</span><span class="operator">></span>removeArrow(arrow); <span class="keyword">delete</span> item; } } foreach (<span class="type"><a href="qgraphicsitem.html">QGraphicsItem</a></span> <span class="operator">*</span>item<span class="operator">,</span> scene<span class="operator">-</span><span class="operator">></span>selectedItems()) { <span class="keyword">if</span> (item<span class="operator">-</span><span class="operator">></span>type() <span class="operator">=</span><span class="operator">=</span> DiagramItem<span class="operator">::</span>Type) qgraphicsitem_cast<span class="operator"><</span>DiagramItem <span class="operator">*</span><span class="operator">></span>(item)<span class="operator">-</span><span class="operator">></span>removeArrows(); scene<span class="operator">-</span><span class="operator">></span>removeItem(item); <span class="keyword">delete</span> item; } } <span class="type">void</span> MainWindow<span class="operator">::</span>pointerGroupClicked(<span class="type">int</span>) { scene<span class="operator">-</span><span class="operator">></span>setMode(DiagramScene<span class="operator">::</span>Mode(pointerTypeGroup<span class="operator">-</span><span class="operator">></span>checkedId())); } <span class="type">void</span> MainWindow<span class="operator">::</span>bringToFront() { <span class="keyword">if</span> (scene<span class="operator">-</span><span class="operator">></span>selectedItems()<span class="operator">.</span>isEmpty()) <span class="keyword">return</span>; <span class="type"><a href="qgraphicsitem.html">QGraphicsItem</a></span> <span class="operator">*</span>selectedItem <span class="operator">=</span> scene<span class="operator">-</span><span class="operator">></span>selectedItems()<span class="operator">.</span>first(); <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> overlapItems <span class="operator">=</span> selectedItem<span class="operator">-</span><span class="operator">></span>collidingItems(); <span class="type"><a href="../qtcore/qtglobal.html#qreal-typedef">qreal</a></span> zValue <span class="operator">=</span> <span class="number">0</span>; foreach (<span class="type"><a href="qgraphicsitem.html">QGraphicsItem</a></span> <span class="operator">*</span>item<span class="operator">,</span> overlapItems) { <span class="keyword">if</span> (item<span class="operator">-</span><span class="operator">></span>zValue() <span class="operator">></span><span class="operator">=</span> zValue <span class="operator">&</span><span class="operator">&</span> item<span class="operator">-</span><span class="operator">></span>type() <span class="operator">=</span><span class="operator">=</span> DiagramItem<span class="operator">::</span>Type) zValue <span class="operator">=</span> item<span class="operator">-</span><span class="operator">></span>zValue() <span class="operator">+</span> <span class="number">0.1</span>; } selectedItem<span class="operator">-</span><span class="operator">></span>setZValue(zValue); } <span class="type">void</span> MainWindow<span class="operator">::</span>sendToBack() { <span class="keyword">if</span> (scene<span class="operator">-</span><span class="operator">></span>selectedItems()<span class="operator">.</span>isEmpty()) <span class="keyword">return</span>; <span class="type"><a href="qgraphicsitem.html">QGraphicsItem</a></span> <span class="operator">*</span>selectedItem <span class="operator">=</span> scene<span class="operator">-</span><span class="operator">></span>selectedItems()<span class="operator">.</span>first(); <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> overlapItems <span class="operator">=</span> selectedItem<span class="operator">-</span><span class="operator">></span>collidingItems(); <span class="type"><a href="../qtcore/qtglobal.html#qreal-typedef">qreal</a></span> zValue <span class="operator">=</span> <span class="number">0</span>; foreach (<span class="type"><a href="qgraphicsitem.html">QGraphicsItem</a></span> <span class="operator">*</span>item<span class="operator">,</span> overlapItems) { <span class="keyword">if</span> (item<span class="operator">-</span><span class="operator">></span>zValue() <span class="operator"><</span><span class="operator">=</span> zValue <span class="operator">&</span><span class="operator">&</span> item<span class="operator">-</span><span class="operator">></span>type() <span class="operator">=</span><span class="operator">=</span> DiagramItem<span class="operator">::</span>Type) zValue <span class="operator">=</span> item<span class="operator">-</span><span class="operator">></span>zValue() <span class="operator">-</span> <span class="number">0.1</span>; } selectedItem<span class="operator">-</span><span class="operator">></span>setZValue(zValue); } <span class="type">void</span> MainWindow<span class="operator">::</span>itemInserted(DiagramItem <span class="operator">*</span>item) { pointerTypeGroup<span class="operator">-</span><span class="operator">></span>button(<span class="type">int</span>(DiagramScene<span class="operator">::</span>MoveItem))<span class="operator">-</span><span class="operator">></span>setChecked(<span class="keyword">true</span>); scene<span class="operator">-</span><span class="operator">></span>setMode(DiagramScene<span class="operator">::</span>Mode(pointerTypeGroup<span class="operator">-</span><span class="operator">></span>checkedId())); buttonGroup<span class="operator">-</span><span class="operator">></span>button(<span class="type">int</span>(item<span class="operator">-</span><span class="operator">></span>diagramType()))<span class="operator">-</span><span class="operator">></span>setChecked(<span class="keyword">false</span>); } <span class="type">void</span> MainWindow<span class="operator">::</span>textInserted(<span class="type"><a href="qgraphicstextitem.html">QGraphicsTextItem</a></span> <span class="operator">*</span>) { buttonGroup<span class="operator">-</span><span class="operator">></span>button(InsertTextButton)<span class="operator">-</span><span class="operator">></span>setChecked(<span class="keyword">false</span>); scene<span class="operator">-</span><span class="operator">></span>setMode(DiagramScene<span class="operator">::</span>Mode(pointerTypeGroup<span class="operator">-</span><span class="operator">></span>checkedId())); } <span class="type">void</span> MainWindow<span class="operator">::</span>currentFontChanged(<span class="keyword">const</span> <span class="type"><a href="../qtgui/qfont.html">QFont</a></span> <span class="operator">&</span>) { handleFontChange(); } <span class="type">void</span> MainWindow<span class="operator">::</span>fontSizeChanged(<span class="keyword">const</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> <span class="operator">&</span>) { handleFontChange(); } <span class="type">void</span> MainWindow<span class="operator">::</span>sceneScaleChanged(<span class="keyword">const</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> <span class="operator">&</span>scale) { <span class="type">double</span> newScale <span class="operator">=</span> scale<span class="operator">.</span>left(scale<span class="operator">.</span>indexOf(tr(<span class="string">"%"</span>)))<span class="operator">.</span>toDouble() <span class="operator">/</span> <span class="number">100.0</span>; <span class="type"><a href="../qtgui/qmatrix.html">QMatrix</a></span> oldMatrix <span class="operator">=</span> view<span class="operator">-</span><span class="operator">></span>matrix(); view<span class="operator">-</span><span class="operator">></span>resetMatrix(); view<span class="operator">-</span><span class="operator">></span>translate(oldMatrix<span class="operator">.</span>dx()<span class="operator">,</span> oldMatrix<span class="operator">.</span>dy()); view<span class="operator">-</span><span class="operator">></span>scale(newScale<span class="operator">,</span> newScale); } <span class="type">void</span> MainWindow<span class="operator">::</span>textColorChanged() { textAction <span class="operator">=</span> qobject_cast<span class="operator"><</span><span class="type"><a href="qaction.html">QAction</a></span> <span class="operator">*</span><span class="operator">></span>(sender()); fontColorToolButton<span class="operator">-</span><span class="operator">></span>setIcon(createColorToolButtonIcon( <span class="string">":/images/textpointer.png"</span><span class="operator">,</span> qvariant_cast<span class="operator"><</span><span class="type"><a href="../qtgui/qcolor.html">QColor</a></span><span class="operator">></span>(textAction<span class="operator">-</span><span class="operator">></span>data()))); textButtonTriggered(); } <span class="type">void</span> MainWindow<span class="operator">::</span>itemColorChanged() { fillAction <span class="operator">=</span> qobject_cast<span class="operator"><</span><span class="type"><a href="qaction.html">QAction</a></span> <span class="operator">*</span><span class="operator">></span>(sender()); fillColorToolButton<span class="operator">-</span><span class="operator">></span>setIcon(createColorToolButtonIcon( <span class="string">":/images/floodfill.png"</span><span class="operator">,</span> qvariant_cast<span class="operator"><</span><span class="type"><a href="../qtgui/qcolor.html">QColor</a></span><span class="operator">></span>(fillAction<span class="operator">-</span><span class="operator">></span>data()))); fillButtonTriggered(); } <span class="type">void</span> MainWindow<span class="operator">::</span>lineColorChanged() { lineAction <span class="operator">=</span> qobject_cast<span class="operator"><</span><span class="type"><a href="qaction.html">QAction</a></span> <span class="operator">*</span><span class="operator">></span>(sender()); lineColorToolButton<span class="operator">-</span><span class="operator">></span>setIcon(createColorToolButtonIcon( <span class="string">":/images/linecolor.png"</span><span class="operator">,</span> qvariant_cast<span class="operator"><</span><span class="type"><a href="../qtgui/qcolor.html">QColor</a></span><span class="operator">></span>(lineAction<span class="operator">-</span><span class="operator">></span>data()))); lineButtonTriggered(); } <span class="type">void</span> MainWindow<span class="operator">::</span>textButtonTriggered() { scene<span class="operator">-</span><span class="operator">></span>setTextColor(qvariant_cast<span class="operator"><</span><span class="type"><a href="../qtgui/qcolor.html">QColor</a></span><span class="operator">></span>(textAction<span class="operator">-</span><span class="operator">></span>data())); } <span class="type">void</span> MainWindow<span class="operator">::</span>fillButtonTriggered() { scene<span class="operator">-</span><span class="operator">></span>setItemColor(qvariant_cast<span class="operator"><</span><span class="type"><a href="../qtgui/qcolor.html">QColor</a></span><span class="operator">></span>(fillAction<span class="operator">-</span><span class="operator">></span>data())); } <span class="type">void</span> MainWindow<span class="operator">::</span>lineButtonTriggered() { scene<span class="operator">-</span><span class="operator">></span>setLineColor(qvariant_cast<span class="operator"><</span><span class="type"><a href="../qtgui/qcolor.html">QColor</a></span><span class="operator">></span>(lineAction<span class="operator">-</span><span class="operator">></span>data())); } <span class="type">void</span> MainWindow<span class="operator">::</span>handleFontChange() { <span class="type"><a href="../qtgui/qfont.html">QFont</a></span> font <span class="operator">=</span> fontCombo<span class="operator">-</span><span class="operator">></span>currentFont(); font<span class="operator">.</span>setPointSize(fontSizeCombo<span class="operator">-</span><span class="operator">></span>currentText()<span class="operator">.</span>toInt()); font<span class="operator">.</span>setWeight(boldAction<span class="operator">-</span><span class="operator">></span>isChecked() <span class="operator">?</span> <span class="type"><a href="../qtgui/qfont.html">QFont</a></span><span class="operator">::</span>Bold : <span class="type"><a href="../qtgui/qfont.html">QFont</a></span><span class="operator">::</span>Normal); font<span class="operator">.</span>setItalic(italicAction<span class="operator">-</span><span class="operator">></span>isChecked()); font<span class="operator">.</span>setUnderline(underlineAction<span class="operator">-</span><span class="operator">></span>isChecked()); scene<span class="operator">-</span><span class="operator">></span>setFont(font); } <span class="type">void</span> MainWindow<span class="operator">::</span>itemSelected(<span class="type"><a href="qgraphicsitem.html">QGraphicsItem</a></span> <span class="operator">*</span>item) { DiagramTextItem <span class="operator">*</span>textItem <span class="operator">=</span> qgraphicsitem_cast<span class="operator"><</span>DiagramTextItem <span class="operator">*</span><span class="operator">></span>(item); <span class="type"><a href="../qtgui/qfont.html">QFont</a></span> font <span class="operator">=</span> textItem<span class="operator">-</span><span class="operator">></span>font(); fontCombo<span class="operator">-</span><span class="operator">></span>setCurrentFont(font); fontSizeCombo<span class="operator">-</span><span class="operator">></span>setEditText(<span class="type"><a href="../qtcore/qstring.html">QString</a></span>()<span class="operator">.</span>setNum(font<span class="operator">.</span>pointSize())); boldAction<span class="operator">-</span><span class="operator">></span>setChecked(font<span class="operator">.</span>weight() <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="../qtgui/qfont.html">QFont</a></span><span class="operator">::</span>Bold); italicAction<span class="operator">-</span><span class="operator">></span>setChecked(font<span class="operator">.</span>italic()); underlineAction<span class="operator">-</span><span class="operator">></span>setChecked(font<span class="operator">.</span>underline()); } <span class="type">void</span> MainWindow<span class="operator">::</span>about() { <span class="type"><a href="qmessagebox.html">QMessageBox</a></span><span class="operator">::</span>about(<span class="keyword">this</span><span class="operator">,</span> tr(<span class="string">"About Diagram Scene"</span>)<span class="operator">,</span> tr(<span class="string">"The <b>Diagram Scene</b> example shows "</span> <span class="string">"use of the graphics framework."</span>)); } <span class="type">void</span> MainWindow<span class="operator">::</span>createToolBox() { buttonGroup <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qbuttongroup.html">QButtonGroup</a></span>(<span class="keyword">this</span>); buttonGroup<span class="operator">-</span><span class="operator">></span>setExclusive(<span class="keyword">false</span>); connect(buttonGroup<span class="operator">,</span> SIGNAL(buttonClicked(<span class="type">int</span>))<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(buttonGroupClicked(<span class="type">int</span>))); <span class="type"><a href="qgridlayout.html">QGridLayout</a></span> <span class="operator">*</span>layout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qgridlayout.html">QGridLayout</a></span>; layout<span class="operator">-</span><span class="operator">></span>addWidget(createCellWidget(tr(<span class="string">"Conditional"</span>)<span class="operator">,</span> DiagramItem<span class="operator">::</span>Conditional)<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">0</span>); layout<span class="operator">-</span><span class="operator">></span>addWidget(createCellWidget(tr(<span class="string">"Process"</span>)<span class="operator">,</span> DiagramItem<span class="operator">::</span>Step)<span class="operator">,</span><span class="number">0</span><span class="operator">,</span> <span class="number">1</span>); layout<span class="operator">-</span><span class="operator">></span>addWidget(createCellWidget(tr(<span class="string">"Input/Output"</span>)<span class="operator">,</span> DiagramItem<span class="operator">::</span>Io)<span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">0</span>); <span class="type"><a href="qtoolbutton.html">QToolButton</a></span> <span class="operator">*</span>textButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qtoolbutton.html">QToolButton</a></span>; textButton<span class="operator">-</span><span class="operator">></span>setCheckable(<span class="keyword">true</span>); buttonGroup<span class="operator">-</span><span class="operator">></span>addButton(textButton<span class="operator">,</span> InsertTextButton); textButton<span class="operator">-</span><span class="operator">></span>setIcon(<span class="type"><a href="../qtgui/qicon.html">QIcon</a></span>(<span class="type"><a href="../qtgui/qpixmap.html">QPixmap</a></span>(<span class="string">":/images/textpointer.png"</span>))); textButton<span class="operator">-</span><span class="operator">></span>setIconSize(<span class="type"><a href="../qtcore/qsize.html">QSize</a></span>(<span class="number">50</span><span class="operator">,</span> <span class="number">50</span>)); <span class="type"><a href="qgridlayout.html">QGridLayout</a></span> <span class="operator">*</span>textLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qgridlayout.html">QGridLayout</a></span>; textLayout<span class="operator">-</span><span class="operator">></span>addWidget(textButton<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>AlignHCenter); textLayout<span class="operator">-</span><span class="operator">></span>addWidget(<span class="keyword">new</span> <span class="type"><a href="qlabel.html">QLabel</a></span>(tr(<span class="string">"Text"</span>))<span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>AlignCenter); <span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>textWidget <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qwidget.html">QWidget</a></span>; textWidget<span class="operator">-</span><span class="operator">></span>setLayout(textLayout); layout<span class="operator">-</span><span class="operator">></span>addWidget(textWidget<span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">1</span>); layout<span class="operator">-</span><span class="operator">></span>setRowStretch(<span class="number">3</span><span class="operator">,</span> <span class="number">10</span>); layout<span class="operator">-</span><span class="operator">></span>setColumnStretch(<span class="number">2</span><span class="operator">,</span> <span class="number">10</span>); <span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>itemWidget <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qwidget.html">QWidget</a></span>; itemWidget<span class="operator">-</span><span class="operator">></span>setLayout(layout); backgroundButtonGroup <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qbuttongroup.html">QButtonGroup</a></span>(<span class="keyword">this</span>); connect(backgroundButtonGroup<span class="operator">,</span> SIGNAL(buttonClicked(<span class="type"><a href="qabstractbutton.html">QAbstractButton</a></span><span class="operator">*</span>))<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(backgroundButtonGroupClicked(<span class="type"><a href="qabstractbutton.html">QAbstractButton</a></span><span class="operator">*</span>))); <span class="type"><a href="qgridlayout.html">QGridLayout</a></span> <span class="operator">*</span>backgroundLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qgridlayout.html">QGridLayout</a></span>; backgroundLayout<span class="operator">-</span><span class="operator">></span>addWidget(createBackgroundCellWidget(tr(<span class="string">"Blue Grid"</span>)<span class="operator">,</span> <span class="string">":/images/background1.png"</span>)<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">0</span>); backgroundLayout<span class="operator">-</span><span class="operator">></span>addWidget(createBackgroundCellWidget(tr(<span class="string">"White Grid"</span>)<span class="operator">,</span> <span class="string">":/images/background2.png"</span>)<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">1</span>); backgroundLayout<span class="operator">-</span><span class="operator">></span>addWidget(createBackgroundCellWidget(tr(<span class="string">"Gray Grid"</span>)<span class="operator">,</span> <span class="string">":/images/background3.png"</span>)<span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">0</span>); backgroundLayout<span class="operator">-</span><span class="operator">></span>addWidget(createBackgroundCellWidget(tr(<span class="string">"No Grid"</span>)<span class="operator">,</span> <span class="string">":/images/background4.png"</span>)<span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">1</span>); backgroundLayout<span class="operator">-</span><span class="operator">></span>setRowStretch(<span class="number">2</span><span class="operator">,</span> <span class="number">10</span>); backgroundLayout<span class="operator">-</span><span class="operator">></span>setColumnStretch(<span class="number">2</span><span class="operator">,</span> <span class="number">10</span>); <span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>backgroundWidget <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qwidget.html">QWidget</a></span>; backgroundWidget<span class="operator">-</span><span class="operator">></span>setLayout(backgroundLayout); toolBox <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qtoolbox.html">QToolBox</a></span>; toolBox<span class="operator">-</span><span class="operator">></span>setSizePolicy(<span class="type"><a href="qsizepolicy.html">QSizePolicy</a></span>(<span class="type"><a href="qsizepolicy.html">QSizePolicy</a></span><span class="operator">::</span>Maximum<span class="operator">,</span> <span class="type"><a href="qsizepolicy.html">QSizePolicy</a></span><span class="operator">::</span>Ignored)); toolBox<span class="operator">-</span><span class="operator">></span>setMinimumWidth(itemWidget<span class="operator">-</span><span class="operator">></span>sizeHint()<span class="operator">.</span>width()); toolBox<span class="operator">-</span><span class="operator">></span>addItem(itemWidget<span class="operator">,</span> tr(<span class="string">"Basic Flowchart Shapes"</span>)); toolBox<span class="operator">-</span><span class="operator">></span>addItem(backgroundWidget<span class="operator">,</span> tr(<span class="string">"Backgrounds"</span>)); } <span class="type">void</span> MainWindow<span class="operator">::</span>createActions() { toFrontAction <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(<span class="type"><a href="../qtgui/qicon.html">QIcon</a></span>(<span class="string">":/images/bringtofront.png"</span>)<span class="operator">,</span> tr(<span class="string">"Bring to &Front"</span>)<span class="operator">,</span> <span class="keyword">this</span>); toFrontAction<span class="operator">-</span><span class="operator">></span>setShortcut(tr(<span class="string">"Ctrl+F"</span>)); toFrontAction<span class="operator">-</span><span class="operator">></span>setStatusTip(tr(<span class="string">"Bring item to front"</span>)); connect(toFrontAction<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(bringToFront())); sendBackAction <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(<span class="type"><a href="../qtgui/qicon.html">QIcon</a></span>(<span class="string">":/images/sendtoback.png"</span>)<span class="operator">,</span> tr(<span class="string">"Send to &Back"</span>)<span class="operator">,</span> <span class="keyword">this</span>); sendBackAction<span class="operator">-</span><span class="operator">></span>setShortcut(tr(<span class="string">"Ctrl+T"</span>)); sendBackAction<span class="operator">-</span><span class="operator">></span>setStatusTip(tr(<span class="string">"Send item to back"</span>)); connect(sendBackAction<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(sendToBack())); deleteAction <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(<span class="type"><a href="../qtgui/qicon.html">QIcon</a></span>(<span class="string">":/images/delete.png"</span>)<span class="operator">,</span> tr(<span class="string">"&Delete"</span>)<span class="operator">,</span> <span class="keyword">this</span>); deleteAction<span class="operator">-</span><span class="operator">></span>setShortcut(tr(<span class="string">"Delete"</span>)); deleteAction<span class="operator">-</span><span class="operator">></span>setStatusTip(tr(<span class="string">"Delete item from diagram"</span>)); connect(deleteAction<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(deleteItem())); exitAction <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(tr(<span class="string">"E&xit"</span>)<span class="operator">,</span> <span class="keyword">this</span>); exitAction<span class="operator">-</span><span class="operator">></span>setShortcuts(<span class="type"><a href="../qtgui/qkeysequence.html">QKeySequence</a></span><span class="operator">::</span>Quit); exitAction<span class="operator">-</span><span class="operator">></span>setStatusTip(tr(<span class="string">"Quit Scenediagram example"</span>)); connect(exitAction<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(close())); boldAction <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(tr(<span class="string">"Bold"</span>)<span class="operator">,</span> <span class="keyword">this</span>); boldAction<span class="operator">-</span><span class="operator">></span>setCheckable(<span class="keyword">true</span>); <span class="type"><a href="../qtgui/qpixmap.html">QPixmap</a></span> pixmap(<span class="string">":/images/bold.png"</span>); boldAction<span class="operator">-</span><span class="operator">></span>setIcon(<span class="type"><a href="../qtgui/qicon.html">QIcon</a></span>(pixmap)); boldAction<span class="operator">-</span><span class="operator">></span>setShortcut(tr(<span class="string">"Ctrl+B"</span>)); connect(boldAction<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(handleFontChange())); italicAction <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(<span class="type"><a href="../qtgui/qicon.html">QIcon</a></span>(<span class="string">":/images/italic.png"</span>)<span class="operator">,</span> tr(<span class="string">"Italic"</span>)<span class="operator">,</span> <span class="keyword">this</span>); italicAction<span class="operator">-</span><span class="operator">></span>setCheckable(<span class="keyword">true</span>); italicAction<span class="operator">-</span><span class="operator">></span>setShortcut(tr(<span class="string">"Ctrl+I"</span>)); connect(italicAction<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(handleFontChange())); underlineAction <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(<span class="type"><a href="../qtgui/qicon.html">QIcon</a></span>(<span class="string">":/images/underline.png"</span>)<span class="operator">,</span> tr(<span class="string">"Underline"</span>)<span class="operator">,</span> <span class="keyword">this</span>); underlineAction<span class="operator">-</span><span class="operator">></span>setCheckable(<span class="keyword">true</span>); underlineAction<span class="operator">-</span><span class="operator">></span>setShortcut(tr(<span class="string">"Ctrl+U"</span>)); connect(underlineAction<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(handleFontChange())); aboutAction <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(tr(<span class="string">"A&bout"</span>)<span class="operator">,</span> <span class="keyword">this</span>); aboutAction<span class="operator">-</span><span class="operator">></span>setShortcut(tr(<span class="string">"F1"</span>)); connect(aboutAction<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(about())); } <span class="type">void</span> MainWindow<span class="operator">::</span>createMenus() { fileMenu <span class="operator">=</span> menuBar()<span class="operator">-</span><span class="operator">></span>addMenu(tr(<span class="string">"&File"</span>)); fileMenu<span class="operator">-</span><span class="operator">></span>addAction(exitAction); itemMenu <span class="operator">=</span> menuBar()<span class="operator">-</span><span class="operator">></span>addMenu(tr(<span class="string">"&Item"</span>)); itemMenu<span class="operator">-</span><span class="operator">></span>addAction(deleteAction); itemMenu<span class="operator">-</span><span class="operator">></span>addSeparator(); itemMenu<span class="operator">-</span><span class="operator">></span>addAction(toFrontAction); itemMenu<span class="operator">-</span><span class="operator">></span>addAction(sendBackAction); aboutMenu <span class="operator">=</span> menuBar()<span class="operator">-</span><span class="operator">></span>addMenu(tr(<span class="string">"&Help"</span>)); aboutMenu<span class="operator">-</span><span class="operator">></span>addAction(aboutAction); } <span class="type">void</span> MainWindow<span class="operator">::</span>createToolbars() { editToolBar <span class="operator">=</span> addToolBar(tr(<span class="string">"Edit"</span>)); editToolBar<span class="operator">-</span><span class="operator">></span>addAction(deleteAction); editToolBar<span class="operator">-</span><span class="operator">></span>addAction(toFrontAction); editToolBar<span class="operator">-</span><span class="operator">></span>addAction(sendBackAction); fontCombo <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qfontcombobox.html">QFontComboBox</a></span>(); connect(fontCombo<span class="operator">,</span> SIGNAL(currentFontChanged(<span class="type"><a href="../qtgui/qfont.html">QFont</a></span>))<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(currentFontChanged(<span class="type"><a href="../qtgui/qfont.html">QFont</a></span>))); fontSizeCombo <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qcombobox.html">QComboBox</a></span>; fontSizeCombo<span class="operator">-</span><span class="operator">></span>setEditable(<span class="keyword">true</span>); <span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">8</span>; i <span class="operator"><</span> <span class="number">30</span>; i <span class="operator">=</span> i <span class="operator">+</span> <span class="number">2</span>) fontSizeCombo<span class="operator">-</span><span class="operator">></span>addItem(<span class="type"><a href="../qtcore/qstring.html">QString</a></span>()<span class="operator">.</span>setNum(i)); <span class="type"><a href="../qtgui/qintvalidator.html">QIntValidator</a></span> <span class="operator">*</span>validator <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="../qtgui/qintvalidator.html">QIntValidator</a></span>(<span class="number">2</span><span class="operator">,</span> <span class="number">64</span><span class="operator">,</span> <span class="keyword">this</span>); fontSizeCombo<span class="operator">-</span><span class="operator">></span>setValidator(validator); connect(fontSizeCombo<span class="operator">,</span> SIGNAL(currentIndexChanged(<span class="type"><a href="../qtcore/qstring.html">QString</a></span>))<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(fontSizeChanged(<span class="type"><a href="../qtcore/qstring.html">QString</a></span>))); fontColorToolButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qtoolbutton.html">QToolButton</a></span>; fontColorToolButton<span class="operator">-</span><span class="operator">></span>setPopupMode(<span class="type"><a href="qtoolbutton.html">QToolButton</a></span><span class="operator">::</span>MenuButtonPopup); fontColorToolButton<span class="operator">-</span><span class="operator">></span>setMenu(createColorMenu(SLOT(textColorChanged())<span class="operator">,</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>black)); textAction <span class="operator">=</span> fontColorToolButton<span class="operator">-</span><span class="operator">></span>menu()<span class="operator">-</span><span class="operator">></span>defaultAction(); fontColorToolButton<span class="operator">-</span><span class="operator">></span>setIcon(createColorToolButtonIcon(<span class="string">":/images/textpointer.png"</span><span class="operator">,</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>black)); fontColorToolButton<span class="operator">-</span><span class="operator">></span>setAutoFillBackground(<span class="keyword">true</span>); connect(fontColorToolButton<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(textButtonTriggered())); fillColorToolButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qtoolbutton.html">QToolButton</a></span>; fillColorToolButton<span class="operator">-</span><span class="operator">></span>setPopupMode(<span class="type"><a href="qtoolbutton.html">QToolButton</a></span><span class="operator">::</span>MenuButtonPopup); fillColorToolButton<span class="operator">-</span><span class="operator">></span>setMenu(createColorMenu(SLOT(itemColorChanged())<span class="operator">,</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>white)); fillAction <span class="operator">=</span> fillColorToolButton<span class="operator">-</span><span class="operator">></span>menu()<span class="operator">-</span><span class="operator">></span>defaultAction(); fillColorToolButton<span class="operator">-</span><span class="operator">></span>setIcon(createColorToolButtonIcon( <span class="string">":/images/floodfill.png"</span><span class="operator">,</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>white)); connect(fillColorToolButton<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(fillButtonTriggered())); lineColorToolButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qtoolbutton.html">QToolButton</a></span>; lineColorToolButton<span class="operator">-</span><span class="operator">></span>setPopupMode(<span class="type"><a href="qtoolbutton.html">QToolButton</a></span><span class="operator">::</span>MenuButtonPopup); lineColorToolButton<span class="operator">-</span><span class="operator">></span>setMenu(createColorMenu(SLOT(lineColorChanged())<span class="operator">,</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>black)); lineAction <span class="operator">=</span> lineColorToolButton<span class="operator">-</span><span class="operator">></span>menu()<span class="operator">-</span><span class="operator">></span>defaultAction(); lineColorToolButton<span class="operator">-</span><span class="operator">></span>setIcon(createColorToolButtonIcon( <span class="string">":/images/linecolor.png"</span><span class="operator">,</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>black)); connect(lineColorToolButton<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(lineButtonTriggered())); textToolBar <span class="operator">=</span> addToolBar(tr(<span class="string">"Font"</span>)); textToolBar<span class="operator">-</span><span class="operator">></span>addWidget(fontCombo); textToolBar<span class="operator">-</span><span class="operator">></span>addWidget(fontSizeCombo); textToolBar<span class="operator">-</span><span class="operator">></span>addAction(boldAction); textToolBar<span class="operator">-</span><span class="operator">></span>addAction(italicAction); textToolBar<span class="operator">-</span><span class="operator">></span>addAction(underlineAction); colorToolBar <span class="operator">=</span> addToolBar(tr(<span class="string">"Color"</span>)); colorToolBar<span class="operator">-</span><span class="operator">></span>addWidget(fontColorToolButton); colorToolBar<span class="operator">-</span><span class="operator">></span>addWidget(fillColorToolButton); colorToolBar<span class="operator">-</span><span class="operator">></span>addWidget(lineColorToolButton); <span class="type"><a href="qtoolbutton.html">QToolButton</a></span> <span class="operator">*</span>pointerButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qtoolbutton.html">QToolButton</a></span>; pointerButton<span class="operator">-</span><span class="operator">></span>setCheckable(<span class="keyword">true</span>); pointerButton<span class="operator">-</span><span class="operator">></span>setChecked(<span class="keyword">true</span>); pointerButton<span class="operator">-</span><span class="operator">></span>setIcon(<span class="type"><a href="../qtgui/qicon.html">QIcon</a></span>(<span class="string">":/images/pointer.png"</span>)); <span class="type"><a href="qtoolbutton.html">QToolButton</a></span> <span class="operator">*</span>linePointerButton <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qtoolbutton.html">QToolButton</a></span>; linePointerButton<span class="operator">-</span><span class="operator">></span>setCheckable(<span class="keyword">true</span>); linePointerButton<span class="operator">-</span><span class="operator">></span>setIcon(<span class="type"><a href="../qtgui/qicon.html">QIcon</a></span>(<span class="string">":/images/linepointer.png"</span>)); pointerTypeGroup <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qbuttongroup.html">QButtonGroup</a></span>(<span class="keyword">this</span>); pointerTypeGroup<span class="operator">-</span><span class="operator">></span>addButton(pointerButton<span class="operator">,</span> <span class="type">int</span>(DiagramScene<span class="operator">::</span>MoveItem)); pointerTypeGroup<span class="operator">-</span><span class="operator">></span>addButton(linePointerButton<span class="operator">,</span> <span class="type">int</span>(DiagramScene<span class="operator">::</span>InsertLine)); connect(pointerTypeGroup<span class="operator">,</span> SIGNAL(buttonClicked(<span class="type">int</span>))<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(pointerGroupClicked(<span class="type">int</span>))); sceneScaleCombo <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qcombobox.html">QComboBox</a></span>; <span class="type"><a href="../qtcore/qstringlist.html">QStringList</a></span> scales; scales <span class="operator"><</span><span class="operator"><</span> tr(<span class="string">"50%"</span>) <span class="operator"><</span><span class="operator"><</span> tr(<span class="string">"75%"</span>) <span class="operator"><</span><span class="operator"><</span> tr(<span class="string">"100%"</span>) <span class="operator"><</span><span class="operator"><</span> tr(<span class="string">"125%"</span>) <span class="operator"><</span><span class="operator"><</span> tr(<span class="string">"150%"</span>); sceneScaleCombo<span class="operator">-</span><span class="operator">></span>addItems(scales); sceneScaleCombo<span class="operator">-</span><span class="operator">></span>setCurrentIndex(<span class="number">2</span>); connect(sceneScaleCombo<span class="operator">,</span> SIGNAL(currentIndexChanged(<span class="type"><a href="../qtcore/qstring.html">QString</a></span>))<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(sceneScaleChanged(<span class="type"><a href="../qtcore/qstring.html">QString</a></span>))); pointerToolbar <span class="operator">=</span> addToolBar(tr(<span class="string">"Pointer type"</span>)); pointerToolbar<span class="operator">-</span><span class="operator">></span>addWidget(pointerButton); pointerToolbar<span class="operator">-</span><span class="operator">></span>addWidget(linePointerButton); pointerToolbar<span class="operator">-</span><span class="operator">></span>addWidget(sceneScaleCombo); } <span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>MainWindow<span class="operator">::</span>createBackgroundCellWidget(<span class="keyword">const</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> <span class="operator">&</span>text<span class="operator">,</span> <span class="keyword">const</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> <span class="operator">&</span>image) { <span class="type"><a href="qtoolbutton.html">QToolButton</a></span> <span class="operator">*</span>button <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qtoolbutton.html">QToolButton</a></span>; button<span class="operator">-</span><span class="operator">></span>setText(text); button<span class="operator">-</span><span class="operator">></span>setIcon(<span class="type"><a href="../qtgui/qicon.html">QIcon</a></span>(image)); button<span class="operator">-</span><span class="operator">></span>setIconSize(<span class="type"><a href="../qtcore/qsize.html">QSize</a></span>(<span class="number">50</span><span class="operator">,</span> <span class="number">50</span>)); button<span class="operator">-</span><span class="operator">></span>setCheckable(<span class="keyword">true</span>); backgroundButtonGroup<span class="operator">-</span><span class="operator">></span>addButton(button); <span class="type"><a href="qgridlayout.html">QGridLayout</a></span> <span class="operator">*</span>layout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qgridlayout.html">QGridLayout</a></span>; layout<span class="operator">-</span><span class="operator">></span>addWidget(button<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>AlignHCenter); layout<span class="operator">-</span><span class="operator">></span>addWidget(<span class="keyword">new</span> <span class="type"><a href="qlabel.html">QLabel</a></span>(text)<span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>AlignCenter); <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>; widget<span class="operator">-</span><span class="operator">></span>setLayout(layout); <span class="keyword">return</span> widget; } <span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>MainWindow<span class="operator">::</span>createCellWidget(<span class="keyword">const</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> <span class="operator">&</span>text<span class="operator">,</span> DiagramItem<span class="operator">::</span>DiagramType type) { DiagramItem item(type<span class="operator">,</span> itemMenu); <span class="type"><a href="../qtgui/qicon.html">QIcon</a></span> icon(item<span class="operator">.</span>image()); <span class="type"><a href="qtoolbutton.html">QToolButton</a></span> <span class="operator">*</span>button <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qtoolbutton.html">QToolButton</a></span>; button<span class="operator">-</span><span class="operator">></span>setIcon(icon); button<span class="operator">-</span><span class="operator">></span>setIconSize(<span class="type"><a href="../qtcore/qsize.html">QSize</a></span>(<span class="number">50</span><span class="operator">,</span> <span class="number">50</span>)); button<span class="operator">-</span><span class="operator">></span>setCheckable(<span class="keyword">true</span>); buttonGroup<span class="operator">-</span><span class="operator">></span>addButton(button<span class="operator">,</span> <span class="type">int</span>(type)); <span class="type"><a href="qgridlayout.html">QGridLayout</a></span> <span class="operator">*</span>layout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qgridlayout.html">QGridLayout</a></span>; layout<span class="operator">-</span><span class="operator">></span>addWidget(button<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>AlignHCenter); layout<span class="operator">-</span><span class="operator">></span>addWidget(<span class="keyword">new</span> <span class="type"><a href="qlabel.html">QLabel</a></span>(text)<span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>AlignCenter); <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>; widget<span class="operator">-</span><span class="operator">></span>setLayout(layout); <span class="keyword">return</span> widget; } <span class="type"><a href="qmenu.html">QMenu</a></span> <span class="operator">*</span>MainWindow<span class="operator">::</span>createColorMenu(<span class="keyword">const</span> <span class="type">char</span> <span class="operator">*</span>slot<span class="operator">,</span> <span class="type"><a href="../qtgui/qcolor.html">QColor</a></span> defaultColor) { <span class="type"><a href="../qtcore/qlist.html">QList</a></span><span class="operator"><</span><span class="type"><a href="../qtgui/qcolor.html">QColor</a></span><span class="operator">></span> colors; colors <span class="operator"><</span><span class="operator"><</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>black <span class="operator"><</span><span class="operator"><</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>white <span class="operator"><</span><span class="operator"><</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>red <span class="operator"><</span><span class="operator"><</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>blue <span class="operator"><</span><span class="operator"><</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>yellow; <span class="type"><a href="../qtcore/qstringlist.html">QStringList</a></span> names; names <span class="operator"><</span><span class="operator"><</span> tr(<span class="string">"black"</span>) <span class="operator"><</span><span class="operator"><</span> tr(<span class="string">"white"</span>) <span class="operator"><</span><span class="operator"><</span> tr(<span class="string">"red"</span>) <span class="operator"><</span><span class="operator"><</span> tr(<span class="string">"blue"</span>) <span class="operator"><</span><span class="operator"><</span> tr(<span class="string">"yellow"</span>); <span class="type"><a href="qmenu.html">QMenu</a></span> <span class="operator">*</span>colorMenu <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qmenu.html">QMenu</a></span>(<span class="keyword">this</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> colors<span class="operator">.</span>count(); <span class="operator">+</span><span class="operator">+</span>i) { <span class="type"><a href="qaction.html">QAction</a></span> <span class="operator">*</span>action <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qaction.html">QAction</a></span>(names<span class="operator">.</span>at(i)<span class="operator">,</span> <span class="keyword">this</span>); action<span class="operator">-</span><span class="operator">></span>setData(colors<span class="operator">.</span>at(i)); action<span class="operator">-</span><span class="operator">></span>setIcon(createColorIcon(colors<span class="operator">.</span>at(i))); connect(action<span class="operator">,</span> SIGNAL(triggered())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> slot); colorMenu<span class="operator">-</span><span class="operator">></span>addAction(action); <span class="keyword">if</span> (colors<span class="operator">.</span>at(i) <span class="operator">=</span><span class="operator">=</span> defaultColor) colorMenu<span class="operator">-</span><span class="operator">></span>setDefaultAction(action); } <span class="keyword">return</span> colorMenu; } <span class="type"><a href="../qtgui/qicon.html">QIcon</a></span> MainWindow<span class="operator">::</span>createColorToolButtonIcon(<span class="keyword">const</span> <span class="type"><a href="../qtcore/qstring.html">QString</a></span> <span class="operator">&</span>imageFile<span class="operator">,</span> <span class="type"><a href="../qtgui/qcolor.html">QColor</a></span> color) { <span class="type"><a href="../qtgui/qpixmap.html">QPixmap</a></span> pixmap(<span class="number">50</span><span class="operator">,</span> <span class="number">80</span>); pixmap<span class="operator">.</span>fill(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>transparent); <span class="type"><a href="../qtgui/qpainter.html">QPainter</a></span> painter(<span class="operator">&</span>pixmap); <span class="type"><a href="../qtgui/qpixmap.html">QPixmap</a></span> image(imageFile); <span class="comment">// Draw icon centred horizontally on button.</span> <span class="type"><a href="../qtcore/qrect.html">QRect</a></span> target(<span class="number">4</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">42</span><span class="operator">,</span> <span class="number">43</span>); <span class="type"><a href="../qtcore/qrect.html">QRect</a></span> source(<span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">42</span><span class="operator">,</span> <span class="number">43</span>); painter<span class="operator">.</span>fillRect(<span class="type"><a href="../qtcore/qrect.html">QRect</a></span>(<span class="number">0</span><span class="operator">,</span> <span class="number">60</span><span class="operator">,</span> <span class="number">50</span><span class="operator">,</span> <span class="number">80</span>)<span class="operator">,</span> color); painter<span class="operator">.</span>drawPixmap(target<span class="operator">,</span> image<span class="operator">,</span> source); <span class="keyword">return</span> <span class="type"><a href="../qtgui/qicon.html">QIcon</a></span>(pixmap); } <span class="type"><a href="../qtgui/qicon.html">QIcon</a></span> MainWindow<span class="operator">::</span>createColorIcon(<span class="type"><a href="../qtgui/qcolor.html">QColor</a></span> color) { <span class="type"><a href="../qtgui/qpixmap.html">QPixmap</a></span> pixmap(<span class="number">20</span><span class="operator">,</span> <span class="number">20</span>); <span class="type"><a href="../qtgui/qpainter.html">QPainter</a></span> painter(<span class="operator">&</span>pixmap); painter<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>fillRect(<span class="type"><a href="../qtcore/qrect.html">QRect</a></span>(<span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">20</span><span class="operator">,</span> <span class="number">20</span>)<span class="operator">,</span> color); <span class="keyword">return</span> <span class="type"><a href="../qtgui/qicon.html">QIcon</a></span>(pixmap); } </pre> </div> <!-- @@@graphicsview/diagramscene/mainwindow.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>