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<h1 class="title">mainwindow.cpp Example File</h1>
<span class="small-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) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** &quot;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
** &quot;AS IS&quot; 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.&quot;
**
** $QT_END_LICENSE$
**
****************************************************************************/</span>
<span class="preprocessor">#include &lt;QtGui&gt;</span>
<span class="preprocessor">#include &lt;QLabel&gt;</span>
<span class="preprocessor">#include &quot;mainwindow.h&quot;</span>
<span class="preprocessor">#include &quot;diagramitem.h&quot;</span>
<span class="preprocessor">#include &quot;diagramscene.h&quot;</span>
<span class="preprocessor">#include &quot;diagramtextitem.h&quot;</span>
<span class="preprocessor">#include &quot;arrow.h&quot;</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">&gt;</span>setSceneRect(<span class="type"><a href="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">&gt;</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">&gt;</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">&gt;</span>setLayout(layout);
setCentralWidget(widget);
setWindowTitle(tr(<span class="string">&quot;Diagramscene&quot;</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="qlist.html">QList</a></span><span class="operator">&lt;</span><span class="type"><a href="qabstractbutton.html">QAbstractButton</a></span> <span class="operator">*</span><span class="operator">&gt;</span> buttons <span class="operator">=</span> backgroundButtonGroup<span class="operator">-</span><span class="operator">&gt;</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)
myButton<span class="operator">-</span><span class="operator">&gt;</span>setChecked(<span class="keyword">false</span>);
}
<span class="type"><a href="qstring.html">QString</a></span> text <span class="operator">=</span> button<span class="operator">-</span><span class="operator">&gt;</span>text();
<span class="keyword">if</span> (text <span class="operator">=</span><span class="operator">=</span> tr(<span class="string">&quot;Blue Grid&quot;</span>))
scene<span class="operator">-</span><span class="operator">&gt;</span>setBackgroundBrush(<span class="type"><a href="qpixmap.html">QPixmap</a></span>(<span class="string">&quot;:/images/background1.png&quot;</span>));
<span class="keyword">else</span> <span class="keyword">if</span> (text <span class="operator">=</span><span class="operator">=</span> tr(<span class="string">&quot;White Grid&quot;</span>))
scene<span class="operator">-</span><span class="operator">&gt;</span>setBackgroundBrush(<span class="type"><a href="qpixmap.html">QPixmap</a></span>(<span class="string">&quot;:/images/background2.png&quot;</span>));
<span class="keyword">else</span> <span class="keyword">if</span> (text <span class="operator">=</span><span class="operator">=</span> tr(<span class="string">&quot;Gray Grid&quot;</span>))
scene<span class="operator">-</span><span class="operator">&gt;</span>setBackgroundBrush(<span class="type"><a href="qpixmap.html">QPixmap</a></span>(<span class="string">&quot;:/images/background3.png&quot;</span>));
<span class="keyword">else</span>
scene<span class="operator">-</span><span class="operator">&gt;</span>setBackgroundBrush(<span class="type"><a href="qpixmap.html">QPixmap</a></span>(<span class="string">&quot;:/images/background4.png&quot;</span>));
scene<span class="operator">-</span><span class="operator">&gt;</span>update();
view<span class="operator">-</span><span class="operator">&gt;</span>update();
}
<span class="type">void</span> MainWindow<span class="operator">::</span>buttonGroupClicked(<span class="type">int</span> id)
{
<span class="type"><a href="qlist.html">QList</a></span><span class="operator">&lt;</span><span class="type"><a href="qabstractbutton.html">QAbstractButton</a></span> <span class="operator">*</span><span class="operator">&gt;</span> buttons <span class="operator">=</span> buttonGroup<span class="operator">-</span><span class="operator">&gt;</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">&gt;</span>button(id) <span class="operator">!</span><span class="operator">=</span> button)
button<span class="operator">-</span><span class="operator">&gt;</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">&gt;</span>setMode(DiagramScene<span class="operator">::</span>InsertText);
} <span class="keyword">else</span> {
scene<span class="operator">-</span><span class="operator">&gt;</span>setItemType(DiagramItem<span class="operator">::</span>DiagramType(id));
scene<span class="operator">-</span><span class="operator">&gt;</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">&gt;</span>selectedItems()) {
<span class="keyword">if</span> (item<span class="operator">-</span><span class="operator">&gt;</span>type() <span class="operator">=</span><span class="operator">=</span> Arrow<span class="operator">::</span>Type) {
scene<span class="operator">-</span><span class="operator">&gt;</span>removeItem(item);
Arrow <span class="operator">*</span>arrow <span class="operator">=</span> qgraphicsitem_cast<span class="operator">&lt;</span>Arrow <span class="operator">*</span><span class="operator">&gt;</span>(item);
arrow<span class="operator">-</span><span class="operator">&gt;</span>startItem()<span class="operator">-</span><span class="operator">&gt;</span>removeArrow(arrow);
arrow<span class="operator">-</span><span class="operator">&gt;</span>endItem()<span class="operator">-</span><span class="operator">&gt;</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">&gt;</span>selectedItems()) {
<span class="keyword">if</span> (item<span class="operator">-</span><span class="operator">&gt;</span>type() <span class="operator">=</span><span class="operator">=</span> DiagramItem<span class="operator">::</span>Type) {
qgraphicsitem_cast<span class="operator">&lt;</span>DiagramItem <span class="operator">*</span><span class="operator">&gt;</span>(item)<span class="operator">-</span><span class="operator">&gt;</span>removeArrows();
}
scene<span class="operator">-</span><span class="operator">&gt;</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">&gt;</span>setMode(DiagramScene<span class="operator">::</span>Mode(pointerTypeGroup<span class="operator">-</span><span class="operator">&gt;</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">&gt;</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">&gt;</span>selectedItems()<span class="operator">.</span>first();
<span class="type"><a href="qlist.html">QList</a></span><span class="operator">&lt;</span><span class="type"><a href="qgraphicsitem.html">QGraphicsItem</a></span> <span class="operator">*</span><span class="operator">&gt;</span> overlapItems <span class="operator">=</span> selectedItem<span class="operator">-</span><span class="operator">&gt;</span>collidingItems();
<span class="type"><a href="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">&gt;</span>zValue() <span class="operator">&gt;</span><span class="operator">=</span> zValue <span class="operator">&amp;</span><span class="operator">&amp;</span>
item<span class="operator">-</span><span class="operator">&gt;</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">&gt;</span>zValue() <span class="operator">+</span> <span class="number">0.1</span>;
}
selectedItem<span class="operator">-</span><span class="operator">&gt;</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">&gt;</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">&gt;</span>selectedItems()<span class="operator">.</span>first();
<span class="type"><a href="qlist.html">QList</a></span><span class="operator">&lt;</span><span class="type"><a href="qgraphicsitem.html">QGraphicsItem</a></span> <span class="operator">*</span><span class="operator">&gt;</span> overlapItems <span class="operator">=</span> selectedItem<span class="operator">-</span><span class="operator">&gt;</span>collidingItems();
<span class="type"><a href="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">&gt;</span>zValue() <span class="operator">&lt;</span><span class="operator">=</span> zValue <span class="operator">&amp;</span><span class="operator">&amp;</span>
item<span class="operator">-</span><span class="operator">&gt;</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">&gt;</span>zValue() <span class="operator">-</span> <span class="number">0.1</span>;
}
selectedItem<span class="operator">-</span><span class="operator">&gt;</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">&gt;</span>button(<span class="type">int</span>(DiagramScene<span class="operator">::</span>MoveItem))<span class="operator">-</span><span class="operator">&gt;</span>setChecked(<span class="keyword">true</span>);
scene<span class="operator">-</span><span class="operator">&gt;</span>setMode(DiagramScene<span class="operator">::</span>Mode(pointerTypeGroup<span class="operator">-</span><span class="operator">&gt;</span>checkedId()));
buttonGroup<span class="operator">-</span><span class="operator">&gt;</span>button(<span class="type">int</span>(item<span class="operator">-</span><span class="operator">&gt;</span>diagramType()))<span class="operator">-</span><span class="operator">&gt;</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">&gt;</span>button(InsertTextButton)<span class="operator">-</span><span class="operator">&gt;</span>setChecked(<span class="keyword">false</span>);
scene<span class="operator">-</span><span class="operator">&gt;</span>setMode(DiagramScene<span class="operator">::</span>Mode(pointerTypeGroup<span class="operator">-</span><span class="operator">&gt;</span>checkedId()));
}
<span class="type">void</span> MainWindow<span class="operator">::</span>currentFontChanged(<span class="keyword">const</span> <span class="type"><a href="qfont.html">QFont</a></span> <span class="operator">&amp;</span>)
{
handleFontChange();
}
<span class="type">void</span> MainWindow<span class="operator">::</span>fontSizeChanged(<span class="keyword">const</span> <span class="type"><a href="qstring.html">QString</a></span> <span class="operator">&amp;</span>)
{
handleFontChange();
}
<span class="type">void</span> MainWindow<span class="operator">::</span>sceneScaleChanged(<span class="keyword">const</span> <span class="type"><a href="qstring.html">QString</a></span> <span class="operator">&amp;</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">&quot;%&quot;</span>)))<span class="operator">.</span>toDouble() <span class="operator">/</span> <span class="number">100.0</span>;
<span class="type"><a href="qmatrix.html">QMatrix</a></span> oldMatrix <span class="operator">=</span> view<span class="operator">-</span><span class="operator">&gt;</span>matrix();
view<span class="operator">-</span><span class="operator">&gt;</span>resetMatrix();
view<span class="operator">-</span><span class="operator">&gt;</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">&gt;</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">&lt;</span><span class="type"><a href="qaction.html">QAction</a></span> <span class="operator">*</span><span class="operator">&gt;</span>(sender());
fontColorToolButton<span class="operator">-</span><span class="operator">&gt;</span>setIcon(createColorToolButtonIcon(
<span class="string">&quot;:/images/textpointer.png&quot;</span><span class="operator">,</span>
qvariant_cast<span class="operator">&lt;</span><span class="type"><a href="qcolor.html">QColor</a></span><span class="operator">&gt;</span>(textAction<span class="operator">-</span><span class="operator">&gt;</span>data())));
textButtonTriggered();
}
<span class="type">void</span> MainWindow<span class="operator">::</span>itemColorChanged()
{
fillAction <span class="operator">=</span> qobject_cast<span class="operator">&lt;</span><span class="type"><a href="qaction.html">QAction</a></span> <span class="operator">*</span><span class="operator">&gt;</span>(sender());
fillColorToolButton<span class="operator">-</span><span class="operator">&gt;</span>setIcon(createColorToolButtonIcon(
<span class="string">&quot;:/images/floodfill.png&quot;</span><span class="operator">,</span>
qvariant_cast<span class="operator">&lt;</span><span class="type"><a href="qcolor.html">QColor</a></span><span class="operator">&gt;</span>(fillAction<span class="operator">-</span><span class="operator">&gt;</span>data())));
fillButtonTriggered();
}
<span class="type">void</span> MainWindow<span class="operator">::</span>lineColorChanged()
{
lineAction <span class="operator">=</span> qobject_cast<span class="operator">&lt;</span><span class="type"><a href="qaction.html">QAction</a></span> <span class="operator">*</span><span class="operator">&gt;</span>(sender());
lineColorToolButton<span class="operator">-</span><span class="operator">&gt;</span>setIcon(createColorToolButtonIcon(
<span class="string">&quot;:/images/linecolor.png&quot;</span><span class="operator">,</span>
qvariant_cast<span class="operator">&lt;</span><span class="type"><a href="qcolor.html">QColor</a></span><span class="operator">&gt;</span>(lineAction<span class="operator">-</span><span class="operator">&gt;</span>data())));
lineButtonTriggered();
}
<span class="type">void</span> MainWindow<span class="operator">::</span>textButtonTriggered()
{
scene<span class="operator">-</span><span class="operator">&gt;</span>setTextColor(qvariant_cast<span class="operator">&lt;</span><span class="type"><a href="qcolor.html">QColor</a></span><span class="operator">&gt;</span>(textAction<span class="operator">-</span><span class="operator">&gt;</span>data()));
}
<span class="type">void</span> MainWindow<span class="operator">::</span>fillButtonTriggered()
{
scene<span class="operator">-</span><span class="operator">&gt;</span>setItemColor(qvariant_cast<span class="operator">&lt;</span><span class="type"><a href="qcolor.html">QColor</a></span><span class="operator">&gt;</span>(fillAction<span class="operator">-</span><span class="operator">&gt;</span>data()));
}
<span class="type">void</span> MainWindow<span class="operator">::</span>lineButtonTriggered()
{
scene<span class="operator">-</span><span class="operator">&gt;</span>setLineColor(qvariant_cast<span class="operator">&lt;</span><span class="type"><a href="qcolor.html">QColor</a></span><span class="operator">&gt;</span>(lineAction<span class="operator">-</span><span class="operator">&gt;</span>data()));
}
<span class="type">void</span> MainWindow<span class="operator">::</span>handleFontChange()
{
<span class="type"><a href="qfont.html">QFont</a></span> font <span class="operator">=</span> fontCombo<span class="operator">-</span><span class="operator">&gt;</span>currentFont();
font<span class="operator">.</span>setPointSize(fontSizeCombo<span class="operator">-</span><span class="operator">&gt;</span>currentText()<span class="operator">.</span>toInt());
font<span class="operator">.</span>setWeight(boldAction<span class="operator">-</span><span class="operator">&gt;</span>isChecked() <span class="operator">?</span> <span class="type"><a href="qfont.html">QFont</a></span><span class="operator">::</span>Bold : <span class="type"><a href="qfont.html">QFont</a></span><span class="operator">::</span>Normal);
font<span class="operator">.</span>setItalic(italicAction<span class="operator">-</span><span class="operator">&gt;</span>isChecked());
font<span class="operator">.</span>setUnderline(underlineAction<span class="operator">-</span><span class="operator">&gt;</span>isChecked());
scene<span class="operator">-</span><span class="operator">&gt;</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">&lt;</span>DiagramTextItem <span class="operator">*</span><span class="operator">&gt;</span>(item);
<span class="type"><a href="qfont.html">QFont</a></span> font <span class="operator">=</span> textItem<span class="operator">-</span><span class="operator">&gt;</span>font();
<span class="type"><a href="qcolor.html">QColor</a></span> color <span class="operator">=</span> textItem<span class="operator">-</span><span class="operator">&gt;</span>defaultTextColor();
fontCombo<span class="operator">-</span><span class="operator">&gt;</span>setCurrentFont(font);
fontSizeCombo<span class="operator">-</span><span class="operator">&gt;</span>setEditText(<span class="type"><a href="qstring.html">QString</a></span>()<span class="operator">.</span>setNum(font<span class="operator">.</span>pointSize()));
boldAction<span class="operator">-</span><span class="operator">&gt;</span>setChecked(font<span class="operator">.</span>weight() <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qfont.html">QFont</a></span><span class="operator">::</span>Bold);
italicAction<span class="operator">-</span><span class="operator">&gt;</span>setChecked(font<span class="operator">.</span>italic());
underlineAction<span class="operator">-</span><span class="operator">&gt;</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">&quot;About Diagram Scene&quot;</span>)<span class="operator">,</span>
tr(<span class="string">&quot;The &lt;b&gt;Diagram Scene&lt;/b&gt; example shows &quot;</span>
<span class="string">&quot;use of the graphics framework.&quot;</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">&gt;</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">&gt;</span>addWidget(createCellWidget(tr(<span class="string">&quot;Conditional&quot;</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">&gt;</span>addWidget(createCellWidget(tr(<span class="string">&quot;Process&quot;</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">&gt;</span>addWidget(createCellWidget(tr(<span class="string">&quot;Input/Output&quot;</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">&gt;</span>setCheckable(<span class="keyword">true</span>);
buttonGroup<span class="operator">-</span><span class="operator">&gt;</span>addButton(textButton<span class="operator">,</span> InsertTextButton);
textButton<span class="operator">-</span><span class="operator">&gt;</span>setIcon(<span class="type"><a href="qicon.html">QIcon</a></span>(<span class="type"><a href="qpixmap.html">QPixmap</a></span>(<span class="string">&quot;:/images/textpointer.png&quot;</span>)
<span class="operator">.</span>scaled(<span class="number">30</span><span class="operator">,</span> <span class="number">30</span>)));
textButton<span class="operator">-</span><span class="operator">&gt;</span>setIconSize(<span class="type"><a href="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">&gt;</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="qt.html">Qt</a></span><span class="operator">::</span>AlignHCenter);
textLayout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(<span class="keyword">new</span> <span class="type"><a href="qlabel.html">QLabel</a></span>(tr(<span class="string">&quot;Text&quot;</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="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">&gt;</span>setLayout(textLayout);
layout<span class="operator">-</span><span class="operator">&gt;</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">&gt;</span>setRowStretch(<span class="number">3</span><span class="operator">,</span> <span class="number">10</span>);
layout<span class="operator">-</span><span class="operator">&gt;</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">&gt;</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">&gt;</span>addWidget(createBackgroundCellWidget(tr(<span class="string">&quot;Blue Grid&quot;</span>)<span class="operator">,</span>
<span class="string">&quot;:/images/background1.png&quot;</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">&gt;</span>addWidget(createBackgroundCellWidget(tr(<span class="string">&quot;White Grid&quot;</span>)<span class="operator">,</span>
<span class="string">&quot;:/images/background2.png&quot;</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">&gt;</span>addWidget(createBackgroundCellWidget(tr(<span class="string">&quot;Gray Grid&quot;</span>)<span class="operator">,</span>
<span class="string">&quot;:/images/background3.png&quot;</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">&gt;</span>addWidget(createBackgroundCellWidget(tr(<span class="string">&quot;No Grid&quot;</span>)<span class="operator">,</span>
<span class="string">&quot;:/images/background4.png&quot;</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">&gt;</span>setRowStretch(<span class="number">2</span><span class="operator">,</span> <span class="number">10</span>);
backgroundLayout<span class="operator">-</span><span class="operator">&gt;</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">&gt;</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">&gt;</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">&gt;</span>setMinimumWidth(itemWidget<span class="operator">-</span><span class="operator">&gt;</span>sizeHint()<span class="operator">.</span>width());
toolBox<span class="operator">-</span><span class="operator">&gt;</span>addItem(itemWidget<span class="operator">,</span> tr(<span class="string">&quot;Basic Flowchart Shapes&quot;</span>));
toolBox<span class="operator">-</span><span class="operator">&gt;</span>addItem(backgroundWidget<span class="operator">,</span> tr(<span class="string">&quot;Backgrounds&quot;</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="qicon.html">QIcon</a></span>(<span class="string">&quot;:/images/bringtofront.png&quot;</span>)<span class="operator">,</span>
tr(<span class="string">&quot;Bring to &amp;Front&quot;</span>)<span class="operator">,</span> <span class="keyword">this</span>);
toFrontAction<span class="operator">-</span><span class="operator">&gt;</span>setShortcut(tr(<span class="string">&quot;Ctrl+F&quot;</span>));
toFrontAction<span class="operator">-</span><span class="operator">&gt;</span>setStatusTip(tr(<span class="string">&quot;Bring item to front&quot;</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="qicon.html">QIcon</a></span>(<span class="string">&quot;:/images/sendtoback.png&quot;</span>)<span class="operator">,</span>
tr(<span class="string">&quot;Send to &amp;Back&quot;</span>)<span class="operator">,</span> <span class="keyword">this</span>);
sendBackAction<span class="operator">-</span><span class="operator">&gt;</span>setShortcut(tr(<span class="string">&quot;Ctrl+B&quot;</span>));
sendBackAction<span class="operator">-</span><span class="operator">&gt;</span>setStatusTip(tr(<span class="string">&quot;Send item to back&quot;</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="qicon.html">QIcon</a></span>(<span class="string">&quot;:/images/delete.png&quot;</span>)<span class="operator">,</span>
tr(<span class="string">&quot;&amp;Delete&quot;</span>)<span class="operator">,</span> <span class="keyword">this</span>);
deleteAction<span class="operator">-</span><span class="operator">&gt;</span>setShortcut(tr(<span class="string">&quot;Delete&quot;</span>));
deleteAction<span class="operator">-</span><span class="operator">&gt;</span>setStatusTip(tr(<span class="string">&quot;Delete item from diagram&quot;</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">&quot;E&amp;xit&quot;</span>)<span class="operator">,</span> <span class="keyword">this</span>);
exitAction<span class="operator">-</span><span class="operator">&gt;</span>setShortcuts(<span class="type"><a href="qkeysequence.html">QKeySequence</a></span><span class="operator">::</span>Quit);
exitAction<span class="operator">-</span><span class="operator">&gt;</span>setStatusTip(tr(<span class="string">&quot;Quit Scenediagram example&quot;</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">&quot;Bold&quot;</span>)<span class="operator">,</span> <span class="keyword">this</span>);
boldAction<span class="operator">-</span><span class="operator">&gt;</span>setCheckable(<span class="keyword">true</span>);
<span class="type"><a href="qpixmap.html">QPixmap</a></span> pixmap(<span class="string">&quot;:/images/bold.png&quot;</span>);
boldAction<span class="operator">-</span><span class="operator">&gt;</span>setIcon(<span class="type"><a href="qicon.html">QIcon</a></span>(pixmap));
boldAction<span class="operator">-</span><span class="operator">&gt;</span>setShortcut(tr(<span class="string">&quot;Ctrl+B&quot;</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="qicon.html">QIcon</a></span>(<span class="string">&quot;:/images/italic.png&quot;</span>)<span class="operator">,</span>
tr(<span class="string">&quot;Italic&quot;</span>)<span class="operator">,</span> <span class="keyword">this</span>);
italicAction<span class="operator">-</span><span class="operator">&gt;</span>setCheckable(<span class="keyword">true</span>);
italicAction<span class="operator">-</span><span class="operator">&gt;</span>setShortcut(tr(<span class="string">&quot;Ctrl+I&quot;</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="qicon.html">QIcon</a></span>(<span class="string">&quot;:/images/underline.png&quot;</span>)<span class="operator">,</span>
tr(<span class="string">&quot;Underline&quot;</span>)<span class="operator">,</span> <span class="keyword">this</span>);
underlineAction<span class="operator">-</span><span class="operator">&gt;</span>setCheckable(<span class="keyword">true</span>);
underlineAction<span class="operator">-</span><span class="operator">&gt;</span>setShortcut(tr(<span class="string">&quot;Ctrl+U&quot;</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">&quot;A&amp;bout&quot;</span>)<span class="operator">,</span> <span class="keyword">this</span>);
aboutAction<span class="operator">-</span><span class="operator">&gt;</span>setShortcut(tr(<span class="string">&quot;Ctrl+B&quot;</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">&gt;</span>addMenu(tr(<span class="string">&quot;&amp;File&quot;</span>));
fileMenu<span class="operator">-</span><span class="operator">&gt;</span>addAction(exitAction);
itemMenu <span class="operator">=</span> menuBar()<span class="operator">-</span><span class="operator">&gt;</span>addMenu(tr(<span class="string">&quot;&amp;Item&quot;</span>));
itemMenu<span class="operator">-</span><span class="operator">&gt;</span>addAction(deleteAction);
itemMenu<span class="operator">-</span><span class="operator">&gt;</span>addSeparator();
itemMenu<span class="operator">-</span><span class="operator">&gt;</span>addAction(toFrontAction);
itemMenu<span class="operator">-</span><span class="operator">&gt;</span>addAction(sendBackAction);
aboutMenu <span class="operator">=</span> menuBar()<span class="operator">-</span><span class="operator">&gt;</span>addMenu(tr(<span class="string">&quot;&amp;Help&quot;</span>));
aboutMenu<span class="operator">-</span><span class="operator">&gt;</span>addAction(aboutAction);
}
<span class="type">void</span> MainWindow<span class="operator">::</span>createToolbars()
{
editToolBar <span class="operator">=</span> addToolBar(tr(<span class="string">&quot;Edit&quot;</span>));
editToolBar<span class="operator">-</span><span class="operator">&gt;</span>addAction(deleteAction);
editToolBar<span class="operator">-</span><span class="operator">&gt;</span>addAction(toFrontAction);
editToolBar<span class="operator">-</span><span class="operator">&gt;</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="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="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">&gt;</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">&lt;</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">&gt;</span>addItem(<span class="type"><a href="qstring.html">QString</a></span>()<span class="operator">.</span>setNum(i));
<span class="type"><a href="qintvalidator.html">QIntValidator</a></span> <span class="operator">*</span>validator <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="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">&gt;</span>setValidator(validator);
connect(fontSizeCombo<span class="operator">,</span> SIGNAL(currentIndexChanged(<span class="type"><a href="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="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">&gt;</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">&gt;</span>setMenu(createColorMenu(SLOT(textColorChanged())<span class="operator">,</span>
<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>black));
textAction <span class="operator">=</span> fontColorToolButton<span class="operator">-</span><span class="operator">&gt;</span>menu()<span class="operator">-</span><span class="operator">&gt;</span>defaultAction();
fontColorToolButton<span class="operator">-</span><span class="operator">&gt;</span>setIcon(createColorToolButtonIcon(
<span class="string">&quot;:/images/textpointer.png&quot;</span><span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>black));
fontColorToolButton<span class="operator">-</span><span class="operator">&gt;</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">&gt;</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">&gt;</span>setMenu(createColorMenu(SLOT(itemColorChanged())<span class="operator">,</span>
<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>white));
fillAction <span class="operator">=</span> fillColorToolButton<span class="operator">-</span><span class="operator">&gt;</span>menu()<span class="operator">-</span><span class="operator">&gt;</span>defaultAction();
fillColorToolButton<span class="operator">-</span><span class="operator">&gt;</span>setIcon(createColorToolButtonIcon(
<span class="string">&quot;:/images/floodfill.png&quot;</span><span class="operator">,</span> <span class="type"><a href="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">&gt;</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">&gt;</span>setMenu(createColorMenu(SLOT(lineColorChanged())<span class="operator">,</span>
<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>black));
lineAction <span class="operator">=</span> lineColorToolButton<span class="operator">-</span><span class="operator">&gt;</span>menu()<span class="operator">-</span><span class="operator">&gt;</span>defaultAction();
lineColorToolButton<span class="operator">-</span><span class="operator">&gt;</span>setIcon(createColorToolButtonIcon(
<span class="string">&quot;:/images/linecolor.png&quot;</span><span class="operator">,</span> <span class="type"><a href="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">&quot;Font&quot;</span>));
textToolBar<span class="operator">-</span><span class="operator">&gt;</span>addWidget(fontCombo);
textToolBar<span class="operator">-</span><span class="operator">&gt;</span>addWidget(fontSizeCombo);
textToolBar<span class="operator">-</span><span class="operator">&gt;</span>addAction(boldAction);
textToolBar<span class="operator">-</span><span class="operator">&gt;</span>addAction(italicAction);
textToolBar<span class="operator">-</span><span class="operator">&gt;</span>addAction(underlineAction);
colorToolBar <span class="operator">=</span> addToolBar(tr(<span class="string">&quot;Color&quot;</span>));
colorToolBar<span class="operator">-</span><span class="operator">&gt;</span>addWidget(fontColorToolButton);
colorToolBar<span class="operator">-</span><span class="operator">&gt;</span>addWidget(fillColorToolButton);
colorToolBar<span class="operator">-</span><span class="operator">&gt;</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">&gt;</span>setCheckable(<span class="keyword">true</span>);
pointerButton<span class="operator">-</span><span class="operator">&gt;</span>setChecked(<span class="keyword">true</span>);
pointerButton<span class="operator">-</span><span class="operator">&gt;</span>setIcon(<span class="type"><a href="qicon.html">QIcon</a></span>(<span class="string">&quot;:/images/pointer.png&quot;</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">&gt;</span>setCheckable(<span class="keyword">true</span>);
linePointerButton<span class="operator">-</span><span class="operator">&gt;</span>setIcon(<span class="type"><a href="qicon.html">QIcon</a></span>(<span class="string">&quot;:/images/linepointer.png&quot;</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">&gt;</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">&gt;</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="qstringlist.html">QStringList</a></span> scales;
scales <span class="operator">&lt;</span><span class="operator">&lt;</span> tr(<span class="string">&quot;50%&quot;</span>) <span class="operator">&lt;</span><span class="operator">&lt;</span> tr(<span class="string">&quot;75%&quot;</span>) <span class="operator">&lt;</span><span class="operator">&lt;</span> tr(<span class="string">&quot;100%&quot;</span>) <span class="operator">&lt;</span><span class="operator">&lt;</span> tr(<span class="string">&quot;125%&quot;</span>) <span class="operator">&lt;</span><span class="operator">&lt;</span> tr(<span class="string">&quot;150%&quot;</span>);
sceneScaleCombo<span class="operator">-</span><span class="operator">&gt;</span>addItems(scales);
sceneScaleCombo<span class="operator">-</span><span class="operator">&gt;</span>setCurrentIndex(<span class="number">2</span>);
connect(sceneScaleCombo<span class="operator">,</span> SIGNAL(currentIndexChanged(<span class="type"><a href="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="qstring.html">QString</a></span>)));
pointerToolbar <span class="operator">=</span> addToolBar(tr(<span class="string">&quot;Pointer type&quot;</span>));
pointerToolbar<span class="operator">-</span><span class="operator">&gt;</span>addWidget(pointerButton);
pointerToolbar<span class="operator">-</span><span class="operator">&gt;</span>addWidget(linePointerButton);
pointerToolbar<span class="operator">-</span><span class="operator">&gt;</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="qstring.html">QString</a></span> <span class="operator">&amp;</span>text<span class="operator">,</span>
<span class="keyword">const</span> <span class="type"><a href="qstring.html">QString</a></span> <span class="operator">&amp;</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">&gt;</span>setText(text);
button<span class="operator">-</span><span class="operator">&gt;</span>setIcon(<span class="type"><a href="qicon.html">QIcon</a></span>(image));
button<span class="operator">-</span><span class="operator">&gt;</span>setIconSize(<span class="type"><a href="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">&gt;</span>setCheckable(<span class="keyword">true</span>);
backgroundButtonGroup<span class="operator">-</span><span class="operator">&gt;</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">&gt;</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="qt.html">Qt</a></span><span class="operator">::</span>AlignHCenter);
layout<span class="operator">-</span><span class="operator">&gt;</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="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">&gt;</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="qstring.html">QString</a></span> <span class="operator">&amp;</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="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">&gt;</span>setIcon(icon);
button<span class="operator">-</span><span class="operator">&gt;</span>setIconSize(<span class="type"><a href="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">&gt;</span>setCheckable(<span class="keyword">true</span>);
buttonGroup<span class="operator">-</span><span class="operator">&gt;</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">&gt;</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="qt.html">Qt</a></span><span class="operator">::</span>AlignHCenter);
layout<span class="operator">-</span><span class="operator">&gt;</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="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">&gt;</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="qcolor.html">QColor</a></span> defaultColor)
{
<span class="type"><a href="qlist.html">QList</a></span><span class="operator">&lt;</span><span class="type"><a href="qcolor.html">QColor</a></span><span class="operator">&gt;</span> colors;
colors <span class="operator">&lt;</span><span class="operator">&lt;</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>black <span class="operator">&lt;</span><span class="operator">&lt;</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>white <span class="operator">&lt;</span><span class="operator">&lt;</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>red <span class="operator">&lt;</span><span class="operator">&lt;</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>blue <span class="operator">&lt;</span><span class="operator">&lt;</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>yellow;
<span class="type"><a href="qstringlist.html">QStringList</a></span> names;
names <span class="operator">&lt;</span><span class="operator">&lt;</span> tr(<span class="string">&quot;black&quot;</span>) <span class="operator">&lt;</span><span class="operator">&lt;</span> tr(<span class="string">&quot;white&quot;</span>) <span class="operator">&lt;</span><span class="operator">&lt;</span> tr(<span class="string">&quot;red&quot;</span>) <span class="operator">&lt;</span><span class="operator">&lt;</span> tr(<span class="string">&quot;blue&quot;</span>)
<span class="operator">&lt;</span><span class="operator">&lt;</span> tr(<span class="string">&quot;yellow&quot;</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">&lt;</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">&gt;</span>setData(colors<span class="operator">.</span>at(i));
action<span class="operator">-</span><span class="operator">&gt;</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">&gt;</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">&gt;</span>setDefaultAction(action);
}
}
<span class="keyword">return</span> colorMenu;
}
<span class="type"><a href="qicon.html">QIcon</a></span> MainWindow<span class="operator">::</span>createColorToolButtonIcon(<span class="keyword">const</span> <span class="type"><a href="qstring.html">QString</a></span> <span class="operator">&amp;</span>imageFile<span class="operator">,</span>
<span class="type"><a href="qcolor.html">QColor</a></span> color)
{
<span class="type"><a href="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="qt.html">Qt</a></span><span class="operator">::</span>transparent);
<span class="type"><a href="qpainter.html">QPainter</a></span> painter(<span class="operator">&amp;</span>pixmap);
<span class="type"><a href="qpixmap.html">QPixmap</a></span> image(imageFile);
<span class="type"><a href="qrect.html">QRect</a></span> target(<span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">50</span><span class="operator">,</span> <span class="number">60</span>);
<span class="type"><a href="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">42</span>);
painter<span class="operator">.</span>fillRect(<span class="type"><a href="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="qicon.html">QIcon</a></span>(pixmap);
}
<span class="type"><a href="qicon.html">QIcon</a></span> MainWindow<span class="operator">::</span>createColorIcon(<span class="type"><a href="qcolor.html">QColor</a></span> color)
{
<span class="type"><a href="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="qpainter.html">QPainter</a></span> painter(<span class="operator">&amp;</span>pixmap);
painter<span class="operator">.</span>setPen(<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>NoPen);
painter<span class="operator">.</span>fillRect(<span class="type"><a href="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="qicon.html">QIcon</a></span>(pixmap);
}</pre>
</div>
<!-- @@@graphicsview/diagramscene/mainwindow.cpp -->
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