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<h2><a name="content"></a>kalarm/lib</h2>
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<h1>label.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment"> * label.cpp - label with radiobutton buddy option</span>
<a name="l00003"></a>00003 <span class="comment"> * Program: kalarm</span>
<a name="l00004"></a>00004 <span class="comment"> * Copyright (C) 2004 by David Jarvie <software@astrojar.org.uk></span>
<a name="l00005"></a>00005 <span class="comment"> *</span>
<a name="l00006"></a>00006 <span class="comment"> * This program is free software; you can redistribute it and/or modify</span>
<a name="l00007"></a>00007 <span class="comment"> * it under the terms of the GNU General Public License as published by</span>
<a name="l00008"></a>00008 <span class="comment"> * the Free Software Foundation; either version 2 of the License, or</span>
<a name="l00009"></a>00009 <span class="comment"> * (at your option) any later version.</span>
<a name="l00010"></a>00010 <span class="comment"> *</span>
<a name="l00011"></a>00011 <span class="comment"> * This program is distributed in the hope that it will be useful,</span>
<a name="l00012"></a>00012 <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00013"></a>00013 <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span>
<a name="l00014"></a>00014 <span class="comment"> * GNU General Public License for more details.</span>
<a name="l00015"></a>00015 <span class="comment"> *</span>
<a name="l00016"></a>00016 <span class="comment"> * You should have received a copy of the GNU General Public License along</span>
<a name="l00017"></a>00017 <span class="comment"> * with this program; if not, write to the Free Software Foundation, Inc.,</span>
<a name="l00018"></a>00018 <span class="comment"> * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.</span>
<a name="l00019"></a>00019 <span class="comment"> */</span>
<a name="l00020"></a>00020
<a name="l00021"></a>00021 <span class="preprocessor">#include "kalarm.h"</span>
<a name="l00022"></a>00022 <span class="preprocessor">#include <qradiobutton.h></span>
<a name="l00023"></a>00023 <span class="preprocessor">#include "label.moc"</span>
<a name="l00024"></a>00024
<a name="l00025"></a>00025
<a name="l00026"></a><a class="code" href="classLabel.html#4bd9e2934ae31f623ec0ddf09b38ef4d">00026</a> <a class="code" href="classLabel.html#4bd9e2934ae31f623ec0ddf09b38ef4d" title="Constructs an empty label.">Label::Label</a>(QWidget* parent, <span class="keyword">const</span> <span class="keywordtype">char</span>* name, WFlags f)
<a name="l00027"></a>00027 : QLabel(parent, name, f),
<a name="l00028"></a>00028 mRadioButton(0),
<a name="l00029"></a>00029 mFocusWidget(0)
<a name="l00030"></a>00030 { }
<a name="l00031"></a>00031
<a name="l00032"></a><a class="code" href="classLabel.html#cc6cbaa6bb35666a855d24d4083b6ec6">00032</a> <a class="code" href="classLabel.html#4bd9e2934ae31f623ec0ddf09b38ef4d" title="Constructs an empty label.">Label::Label</a>(<span class="keyword">const</span> QString& text, QWidget* parent, <span class="keyword">const</span> <span class="keywordtype">char</span>* name, WFlags f)
<a name="l00033"></a>00033 : QLabel(text, parent, name, f),
<a name="l00034"></a>00034 mRadioButton(0),
<a name="l00035"></a>00035 mFocusWidget(0)
<a name="l00036"></a>00036 { }
<a name="l00037"></a>00037
<a name="l00038"></a><a class="code" href="classLabel.html#7787ce18989cb79c30a0e6f162303b45">00038</a> <a class="code" href="classLabel.html#4bd9e2934ae31f623ec0ddf09b38ef4d" title="Constructs an empty label.">Label::Label</a>(QWidget* buddy, <span class="keyword">const</span> QString& text, QWidget* parent, <span class="keyword">const</span> <span class="keywordtype">char</span>* name, WFlags f)
<a name="l00039"></a>00039 : QLabel(buddy, text, parent, name, f),
<a name="l00040"></a>00040 mRadioButton(0),
<a name="l00041"></a>00041 mFocusWidget(0)
<a name="l00042"></a>00042 { }
<a name="l00043"></a>00043
<a name="l00044"></a>00044 <span class="comment">/******************************************************************************</span>
<a name="l00045"></a>00045 <span class="comment">* Set a buddy widget.</span>
<a name="l00046"></a>00046 <span class="comment">* If it (or its focus proxy) is a radio button, create a focus widget.</span>
<a name="l00047"></a>00047 <span class="comment">* When the accelerator key is pressed, the focus widget then receives focus.</span>
<a name="l00048"></a>00048 <span class="comment">* That event triggers the selection of the radio button.</span>
<a name="l00049"></a>00049 <span class="comment">*/</span>
<a name="l00050"></a><a class="code" href="classLabel.html#1550a765f011d44bfebd1596e44a7f94">00050</a> <span class="keywordtype">void</span> <a class="code" href="classLabel.html#1550a765f011d44bfebd1596e44a7f94" title="Sets the label&#39;s buddy widget which receives the keyboard focus when the label&#39;s...">Label::setBuddy</a>(QWidget* bud)
<a name="l00051"></a>00051 {
<a name="l00052"></a>00052 <span class="keywordflow">if</span> (mRadioButton)
<a name="l00053"></a>00053 disconnect(mRadioButton, SIGNAL(destroyed()), <span class="keyword">this</span>, SLOT(buddyDead()));
<a name="l00054"></a>00054 QWidget* w = bud;
<a name="l00055"></a>00055 <span class="keywordflow">if</span> (w)
<a name="l00056"></a>00056 {
<a name="l00057"></a>00057 <span class="keywordflow">while</span> (w->focusProxy())
<a name="l00058"></a>00058 w = w->focusProxy();
<a name="l00059"></a>00059 <span class="keywordflow">if</span> (!w->inherits(<span class="stringliteral">"QRadioButton"</span>))
<a name="l00060"></a>00060 w = 0;
<a name="l00061"></a>00061 }
<a name="l00062"></a>00062 <span class="keywordflow">if</span> (!w)
<a name="l00063"></a>00063 {
<a name="l00064"></a>00064 <span class="comment">// The buddy widget isn't a radio button</span>
<a name="l00065"></a>00065 QLabel::setBuddy(bud);
<a name="l00066"></a>00066 <span class="keyword">delete</span> mFocusWidget;
<a name="l00067"></a>00067 mFocusWidget = 0;
<a name="l00068"></a>00068 mRadioButton = 0;
<a name="l00069"></a>00069 }
<a name="l00070"></a>00070 <span class="keywordflow">else</span>
<a name="l00071"></a>00071 {
<a name="l00072"></a>00072 <span class="comment">// The buddy widget is a radio button, so set a different buddy</span>
<a name="l00073"></a>00073 <span class="keywordflow">if</span> (!mFocusWidget)
<a name="l00074"></a>00074 mFocusWidget = <span class="keyword">new</span> LabelFocusWidget(<span class="keyword">this</span>);
<a name="l00075"></a>00075 QLabel::setBuddy(mFocusWidget);
<a name="l00076"></a>00076 mRadioButton = (QRadioButton*)bud;
<a name="l00077"></a>00077 connect(mRadioButton, SIGNAL(destroyed()), <span class="keyword">this</span>, SLOT(buddyDead()));
<a name="l00078"></a>00078 }
<a name="l00079"></a>00079 }
<a name="l00080"></a>00080
<a name="l00081"></a>00081 <span class="keywordtype">void</span> Label::buddyDead()
<a name="l00082"></a>00082 {
<a name="l00083"></a>00083 <span class="keyword">delete</span> mFocusWidget;
<a name="l00084"></a>00084 mFocusWidget = 0;
<a name="l00085"></a>00085 mRadioButton = 0;
<a name="l00086"></a>00086 }
<a name="l00087"></a>00087
<a name="l00088"></a>00088 <span class="comment">/******************************************************************************</span>
<a name="l00089"></a>00089 <span class="comment">* Called when focus is transferred to the label's special focus widget.</span>
<a name="l00090"></a>00090 <span class="comment">* Transfer focus to the radio button and select it.</span>
<a name="l00091"></a>00091 <span class="comment">*/</span>
<a name="l00092"></a>00092 <span class="keywordtype">void</span> Label::activated()
<a name="l00093"></a>00093 {
<a name="l00094"></a>00094 <span class="keywordflow">if</span> (mFocusWidget && mRadioButton)
<a name="l00095"></a>00095 {
<a name="l00096"></a>00096 mRadioButton->setFocus();
<a name="l00097"></a>00097 mRadioButton->setChecked(<span class="keyword">true</span>);
<a name="l00098"></a>00098 }
<a name="l00099"></a>00099 }
<a name="l00100"></a>00100
<a name="l00101"></a>00101
<a name="l00102"></a>00102 <span class="comment">/*=============================================================================</span>
<a name="l00103"></a>00103 <span class="comment">* Class: LabelFocusWidget</span>
<a name="l00104"></a>00104 <span class="comment">=============================================================================*/</span>
<a name="l00105"></a>00105
<a name="l00106"></a>00106 LabelFocusWidget::LabelFocusWidget(QWidget* parent, <span class="keyword">const</span> <span class="keywordtype">char</span>* name)
<a name="l00107"></a>00107 : QWidget(parent, name)
<a name="l00108"></a>00108 {
<a name="l00109"></a>00109 setFocusPolicy(ClickFocus);
<a name="l00110"></a>00110 setFixedSize(QSize(1,1));
<a name="l00111"></a>00111 }
<a name="l00112"></a>00112
<a name="l00113"></a>00113 <span class="keywordtype">void</span> LabelFocusWidget::focusInEvent(QFocusEvent*)
<a name="l00114"></a>00114 {
<a name="l00115"></a>00115 <a class="code" href="classLabel.html" title="A QLabel with option for a buddy radio button.">Label</a>* parent = (<a class="code" href="classLabel.html" title="A QLabel with option for a buddy radio button.">Label</a>*)parentWidget();
<a name="l00116"></a>00116 parent-><a class="code" href="classLabel.html#878394ba10c5e0289c05ac9a8ce6a779">activated</a>();
<a name="l00117"></a>00117
<a name="l00118"></a>00118 }
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