415 lines
28 KiB
HTML
415 lines
28 KiB
HTML
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<h1 class="title">borderlayout.cpp Example File</h1>
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<span class="small-subtitle">layouts/borderlayout/borderlayout.cpp</span>
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<!-- $$$layouts/borderlayout/borderlayout.cpp-description -->
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<div class="descr"> <a name="details"></a>
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<pre class="cpp"> <span class="comment">/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** Contact: http://www.qt.io/licensing/
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**
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** This file is part of the examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** You may use this file under the terms of the BSD license as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of The Qt Company Ltd nor the names of its
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** contributors may be used to endorse or promote products derived
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** from this software without specific prior written permission.
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**
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/</span>
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<span class="preprocessor">#include <QtGui></span>
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<span class="preprocessor">#include "borderlayout.h"</span>
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BorderLayout<span class="operator">::</span>BorderLayout(<span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>parent<span class="operator">,</span> <span class="type">int</span> margin<span class="operator">,</span> <span class="type">int</span> spacing)
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: <span class="type"><a href="qlayout.html">QLayout</a></span>(parent)
|
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{
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setMargin(margin);
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setSpacing(spacing);
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}
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BorderLayout<span class="operator">::</span>BorderLayout(<span class="type">int</span> spacing)
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{
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setSpacing(spacing);
|
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}
|
|
|
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BorderLayout<span class="operator">::</span><span class="operator">~</span>BorderLayout()
|
|
{
|
|
<span class="type"><a href="qlayoutitem.html">QLayoutItem</a></span> <span class="operator">*</span>l;
|
|
<span class="keyword">while</span> ((l <span class="operator">=</span> takeAt(<span class="number">0</span>)))
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<span class="keyword">delete</span> l;
|
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}
|
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|
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<span class="type">void</span> BorderLayout<span class="operator">::</span>addItem(<span class="type"><a href="qlayoutitem.html">QLayoutItem</a></span> <span class="operator">*</span>item)
|
|
{
|
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add(item<span class="operator">,</span> West);
|
|
}
|
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|
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<span class="type">void</span> BorderLayout<span class="operator">::</span>addWidget(<span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>widget<span class="operator">,</span> Position position)
|
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{
|
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add(<span class="keyword">new</span> <span class="type"><a href="qwidgetitem.html">QWidgetItem</a></span>(widget)<span class="operator">,</span> position);
|
|
}
|
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|
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<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>Orientations BorderLayout<span class="operator">::</span>expandingDirections() <span class="keyword">const</span>
|
|
{
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<span class="keyword">return</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>Horizontal <span class="operator">|</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>Vertical;
|
|
}
|
|
|
|
<span class="type">bool</span> BorderLayout<span class="operator">::</span>hasHeightForWidth() <span class="keyword">const</span>
|
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{
|
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<span class="keyword">return</span> <span class="keyword">false</span>;
|
|
}
|
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|
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<span class="type">int</span> BorderLayout<span class="operator">::</span>count() <span class="keyword">const</span>
|
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{
|
|
<span class="keyword">return</span> list<span class="operator">.</span>size();
|
|
}
|
|
|
|
<span class="type"><a href="qlayoutitem.html">QLayoutItem</a></span> <span class="operator">*</span>BorderLayout<span class="operator">::</span>itemAt(<span class="type">int</span> index) <span class="keyword">const</span>
|
|
{
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ItemWrapper <span class="operator">*</span>wrapper <span class="operator">=</span> list<span class="operator">.</span>value(index);
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<span class="keyword">if</span> (wrapper)
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<span class="keyword">return</span> wrapper<span class="operator">-</span><span class="operator">></span>item;
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<span class="keyword">else</span>
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<span class="keyword">return</span> <span class="number">0</span>;
|
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}
|
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|
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<span class="type"><a href="qsize.html">QSize</a></span> BorderLayout<span class="operator">::</span>minimumSize() <span class="keyword">const</span>
|
|
{
|
|
<span class="keyword">return</span> calculateSize(MinimumSize);
|
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}
|
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|
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<span class="type">void</span> BorderLayout<span class="operator">::</span>setGeometry(<span class="keyword">const</span> <span class="type"><a href="qrect.html">QRect</a></span> <span class="operator">&</span>rect)
|
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{
|
|
ItemWrapper <span class="operator">*</span>center <span class="operator">=</span> <span class="number">0</span>;
|
|
<span class="type">int</span> eastWidth <span class="operator">=</span> <span class="number">0</span>;
|
|
<span class="type">int</span> westWidth <span class="operator">=</span> <span class="number">0</span>;
|
|
<span class="type">int</span> northHeight <span class="operator">=</span> <span class="number">0</span>;
|
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<span class="type">int</span> southHeight <span class="operator">=</span> <span class="number">0</span>;
|
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<span class="type">int</span> centerHeight <span class="operator">=</span> <span class="number">0</span>;
|
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<span class="type">int</span> i;
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|
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<span class="type"><a href="qlayout.html">QLayout</a></span><span class="operator">::</span>setGeometry(rect);
|
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|
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<span class="keyword">for</span> (i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator"><</span> list<span class="operator">.</span>size(); <span class="operator">+</span><span class="operator">+</span>i) {
|
|
ItemWrapper <span class="operator">*</span>wrapper <span class="operator">=</span> list<span class="operator">.</span>at(i);
|
|
<span class="type"><a href="qlayoutitem.html">QLayoutItem</a></span> <span class="operator">*</span>item <span class="operator">=</span> wrapper<span class="operator">-</span><span class="operator">></span>item;
|
|
Position position <span class="operator">=</span> wrapper<span class="operator">-</span><span class="operator">></span>position;
|
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|
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<span class="keyword">if</span> (position <span class="operator">=</span><span class="operator">=</span> North) {
|
|
item<span class="operator">-</span><span class="operator">></span>setGeometry(<span class="type"><a href="qrect.html">QRect</a></span>(rect<span class="operator">.</span>x()<span class="operator">,</span> northHeight<span class="operator">,</span> rect<span class="operator">.</span>width()<span class="operator">,</span>
|
|
item<span class="operator">-</span><span class="operator">></span>sizeHint()<span class="operator">.</span>height()));
|
|
|
|
northHeight <span class="operator">+</span><span class="operator">=</span> item<span class="operator">-</span><span class="operator">></span>geometry()<span class="operator">.</span>height() <span class="operator">+</span> spacing();
|
|
} <span class="keyword">else</span> <span class="keyword">if</span> (position <span class="operator">=</span><span class="operator">=</span> South) {
|
|
item<span class="operator">-</span><span class="operator">></span>setGeometry(<span class="type"><a href="qrect.html">QRect</a></span>(item<span class="operator">-</span><span class="operator">></span>geometry()<span class="operator">.</span>x()<span class="operator">,</span>
|
|
item<span class="operator">-</span><span class="operator">></span>geometry()<span class="operator">.</span>y()<span class="operator">,</span> rect<span class="operator">.</span>width()<span class="operator">,</span>
|
|
item<span class="operator">-</span><span class="operator">></span>sizeHint()<span class="operator">.</span>height()));
|
|
|
|
southHeight <span class="operator">+</span><span class="operator">=</span> item<span class="operator">-</span><span class="operator">></span>geometry()<span class="operator">.</span>height() <span class="operator">+</span> spacing();
|
|
|
|
item<span class="operator">-</span><span class="operator">></span>setGeometry(<span class="type"><a href="qrect.html">QRect</a></span>(rect<span class="operator">.</span>x()<span class="operator">,</span>
|
|
rect<span class="operator">.</span>y() <span class="operator">+</span> rect<span class="operator">.</span>height() <span class="operator">-</span> southHeight <span class="operator">+</span> spacing()<span class="operator">,</span>
|
|
item<span class="operator">-</span><span class="operator">></span>geometry()<span class="operator">.</span>width()<span class="operator">,</span>
|
|
item<span class="operator">-</span><span class="operator">></span>geometry()<span class="operator">.</span>height()));
|
|
} <span class="keyword">else</span> <span class="keyword">if</span> (position <span class="operator">=</span><span class="operator">=</span> Center) {
|
|
center <span class="operator">=</span> wrapper;
|
|
}
|
|
}
|
|
|
|
centerHeight <span class="operator">=</span> rect<span class="operator">.</span>height() <span class="operator">-</span> northHeight <span class="operator">-</span> southHeight;
|
|
|
|
<span class="keyword">for</span> (i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator"><</span> list<span class="operator">.</span>size(); <span class="operator">+</span><span class="operator">+</span>i) {
|
|
ItemWrapper <span class="operator">*</span>wrapper <span class="operator">=</span> list<span class="operator">.</span>at(i);
|
|
<span class="type"><a href="qlayoutitem.html">QLayoutItem</a></span> <span class="operator">*</span>item <span class="operator">=</span> wrapper<span class="operator">-</span><span class="operator">></span>item;
|
|
Position position <span class="operator">=</span> wrapper<span class="operator">-</span><span class="operator">></span>position;
|
|
|
|
<span class="keyword">if</span> (position <span class="operator">=</span><span class="operator">=</span> West) {
|
|
item<span class="operator">-</span><span class="operator">></span>setGeometry(<span class="type"><a href="qrect.html">QRect</a></span>(rect<span class="operator">.</span>x() <span class="operator">+</span> westWidth<span class="operator">,</span> northHeight<span class="operator">,</span>
|
|
item<span class="operator">-</span><span class="operator">></span>sizeHint()<span class="operator">.</span>width()<span class="operator">,</span> centerHeight));
|
|
|
|
westWidth <span class="operator">+</span><span class="operator">=</span> item<span class="operator">-</span><span class="operator">></span>geometry()<span class="operator">.</span>width() <span class="operator">+</span> spacing();
|
|
} <span class="keyword">else</span> <span class="keyword">if</span> (position <span class="operator">=</span><span class="operator">=</span> East) {
|
|
item<span class="operator">-</span><span class="operator">></span>setGeometry(<span class="type"><a href="qrect.html">QRect</a></span>(item<span class="operator">-</span><span class="operator">></span>geometry()<span class="operator">.</span>x()<span class="operator">,</span> item<span class="operator">-</span><span class="operator">></span>geometry()<span class="operator">.</span>y()<span class="operator">,</span>
|
|
item<span class="operator">-</span><span class="operator">></span>sizeHint()<span class="operator">.</span>width()<span class="operator">,</span> centerHeight));
|
|
|
|
eastWidth <span class="operator">+</span><span class="operator">=</span> item<span class="operator">-</span><span class="operator">></span>geometry()<span class="operator">.</span>width() <span class="operator">+</span> spacing();
|
|
|
|
item<span class="operator">-</span><span class="operator">></span>setGeometry(<span class="type"><a href="qrect.html">QRect</a></span>(
|
|
rect<span class="operator">.</span>x() <span class="operator">+</span> rect<span class="operator">.</span>width() <span class="operator">-</span> eastWidth <span class="operator">+</span> spacing()<span class="operator">,</span>
|
|
northHeight<span class="operator">,</span> item<span class="operator">-</span><span class="operator">></span>geometry()<span class="operator">.</span>width()<span class="operator">,</span>
|
|
item<span class="operator">-</span><span class="operator">></span>geometry()<span class="operator">.</span>height()));
|
|
}
|
|
}
|
|
|
|
<span class="keyword">if</span> (center)
|
|
center<span class="operator">-</span><span class="operator">></span>item<span class="operator">-</span><span class="operator">></span>setGeometry(<span class="type"><a href="qrect.html">QRect</a></span>(westWidth<span class="operator">,</span> northHeight<span class="operator">,</span>
|
|
rect<span class="operator">.</span>width() <span class="operator">-</span> eastWidth <span class="operator">-</span> westWidth<span class="operator">,</span>
|
|
centerHeight));
|
|
}
|
|
|
|
<span class="type"><a href="qsize.html">QSize</a></span> BorderLayout<span class="operator">::</span>sizeHint() <span class="keyword">const</span>
|
|
{
|
|
<span class="keyword">return</span> calculateSize(SizeHint);
|
|
}
|
|
|
|
<span class="type"><a href="qlayoutitem.html">QLayoutItem</a></span> <span class="operator">*</span>BorderLayout<span class="operator">::</span>takeAt(<span class="type">int</span> index)
|
|
{
|
|
<span class="keyword">if</span> (index <span class="operator">></span><span class="operator">=</span> <span class="number">0</span> <span class="operator">&</span><span class="operator">&</span> index <span class="operator"><</span> list<span class="operator">.</span>size()) {
|
|
ItemWrapper <span class="operator">*</span>layoutStruct <span class="operator">=</span> list<span class="operator">.</span>takeAt(index);
|
|
<span class="keyword">return</span> layoutStruct<span class="operator">-</span><span class="operator">></span>item;
|
|
}
|
|
<span class="keyword">return</span> <span class="number">0</span>;
|
|
}
|
|
|
|
<span class="type">void</span> BorderLayout<span class="operator">::</span>add(<span class="type"><a href="qlayoutitem.html">QLayoutItem</a></span> <span class="operator">*</span>item<span class="operator">,</span> Position position)
|
|
{
|
|
list<span class="operator">.</span>append(<span class="keyword">new</span> ItemWrapper(item<span class="operator">,</span> position));
|
|
}
|
|
|
|
<span class="type"><a href="qsize.html">QSize</a></span> BorderLayout<span class="operator">::</span>calculateSize(SizeType sizeType) <span class="keyword">const</span>
|
|
{
|
|
<span class="type"><a href="qsize.html">QSize</a></span> totalSize;
|
|
|
|
<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> list<span class="operator">.</span>size(); <span class="operator">+</span><span class="operator">+</span>i) {
|
|
ItemWrapper <span class="operator">*</span>wrapper <span class="operator">=</span> list<span class="operator">.</span>at(i);
|
|
Position position <span class="operator">=</span> wrapper<span class="operator">-</span><span class="operator">></span>position;
|
|
<span class="type"><a href="qsize.html">QSize</a></span> itemSize;
|
|
|
|
<span class="keyword">if</span> (sizeType <span class="operator">=</span><span class="operator">=</span> MinimumSize)
|
|
itemSize <span class="operator">=</span> wrapper<span class="operator">-</span><span class="operator">></span>item<span class="operator">-</span><span class="operator">></span>minimumSize();
|
|
<span class="keyword">else</span> <span class="comment">// (sizeType == SizeHint)</span>
|
|
itemSize <span class="operator">=</span> wrapper<span class="operator">-</span><span class="operator">></span>item<span class="operator">-</span><span class="operator">></span>sizeHint();
|
|
|
|
<span class="keyword">if</span> (position <span class="operator">=</span><span class="operator">=</span> North <span class="operator">|</span><span class="operator">|</span> position <span class="operator">=</span><span class="operator">=</span> South <span class="operator">|</span><span class="operator">|</span> position <span class="operator">=</span><span class="operator">=</span> Center)
|
|
totalSize<span class="operator">.</span>rheight() <span class="operator">+</span><span class="operator">=</span> itemSize<span class="operator">.</span>height();
|
|
|
|
<span class="keyword">if</span> (position <span class="operator">=</span><span class="operator">=</span> West <span class="operator">|</span><span class="operator">|</span> position <span class="operator">=</span><span class="operator">=</span> East <span class="operator">|</span><span class="operator">|</span> position <span class="operator">=</span><span class="operator">=</span> Center)
|
|
totalSize<span class="operator">.</span>rwidth() <span class="operator">+</span><span class="operator">=</span> itemSize<span class="operator">.</span>width();
|
|
}
|
|
<span class="keyword">return</span> totalSize;
|
|
}</pre>
|
|
</div>
|
|
<!-- @@@layouts/borderlayout/borderlayout.cpp -->
|
|
</div>
|
|
</div>
|
|
</div>
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|
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<span></span>
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<p>
|
|
<acronym title="Copyright">©</acronym> 2015 The Qt Company Ltd.
|
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Documentation contributions included herein are the copyrights of
|
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their respective owners.</p>
|
|
<br />
|
|
<p>
|
|
The documentation provided herein is licensed under the terms of the
|
|
<a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation
|
|
License version 1.3</a> as published by the Free Software Foundation.</p>
|
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<p>
|
|
Documentation sources may be obtained from <a href="http://www.qt-project.org">
|
|
www.qt-project.org</a>.</p>
|
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<br />
|
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<p>
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Qt and respective logos are trademarks of The Qt Company Ltd
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in Finland and/or other countries worldwide. All other trademarks are property
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of their respective owners. <a title="Privacy Policy"
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href="http://en.gitorious.org/privacy_policy/">Privacy Policy</a></p>
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