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<h2><a name="content"></a>kalarm/lib</h2>
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<h1>checkbox.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"> * checkbox.cpp - check box with read-only option</span>
<a name="l00003"></a>00003 <span class="comment"> * Program: kalarm</span>
<a name="l00004"></a>00004 <span class="comment"> * Copyright (c) 2002, 2003 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 "checkbox.moc"</span>
<a name="l00022"></a>00022
<a name="l00023"></a>00023
<a name="l00024"></a><a class="code" href="classCheckBox.html#ed0726a0a8d3192fc85babb8c1da5b0a">00024</a> <a class="code" href="classCheckBox.html#ed0726a0a8d3192fc85babb8c1da5b0a" title="Constructor.">CheckBox::CheckBox</a>(QWidget* parent, <span class="keyword">const</span> <span class="keywordtype">char</span>* name)
<a name="l00025"></a>00025 : QCheckBox(parent, name),
<a name="l00026"></a>00026 mFocusPolicy(focusPolicy()),
<a name="l00027"></a>00027 mFocusWidget(0),
<a name="l00028"></a>00028 mReadOnly(false)
<a name="l00029"></a>00029 { }
<a name="l00030"></a>00030
<a name="l00031"></a><a class="code" href="classCheckBox.html#fca37a71344fd5922e70e756d3e1d82f">00031</a> <a class="code" href="classCheckBox.html#ed0726a0a8d3192fc85babb8c1da5b0a" title="Constructor.">CheckBox::CheckBox</a>(<span class="keyword">const</span> QString& text, QWidget* parent, <span class="keyword">const</span> <span class="keywordtype">char</span>* name)
<a name="l00032"></a>00032 : QCheckBox(text, parent, name),
<a name="l00033"></a>00033 mFocusPolicy(focusPolicy()),
<a name="l00034"></a>00034 mFocusWidget(0),
<a name="l00035"></a>00035 mReadOnly(false)
<a name="l00036"></a>00036 { }
<a name="l00037"></a>00037
<a name="l00038"></a>00038 <span class="comment">/******************************************************************************</span>
<a name="l00039"></a>00039 <span class="comment">* Set the read-only status. If read-only, the checkbox can be toggled by the</span>
<a name="l00040"></a>00040 <span class="comment">* application, but not by the user.</span>
<a name="l00041"></a>00041 <span class="comment">*/</span>
<a name="l00042"></a><a class="code" href="classCheckBox.html#fc8baa6d58a30ffa753c2bd80aedfdfe">00042</a> <span class="keywordtype">void</span> <a class="code" href="classCheckBox.html#fc8baa6d58a30ffa753c2bd80aedfdfe" title="Sets whether the check box is read-only for the user.">CheckBox::setReadOnly</a>(<span class="keywordtype">bool</span> ro)
<a name="l00043"></a>00043 {
<a name="l00044"></a>00044 <span class="keywordflow">if</span> ((<span class="keywordtype">int</span>)ro != (<span class="keywordtype">int</span>)mReadOnly)
<a name="l00045"></a>00045 {
<a name="l00046"></a>00046 mReadOnly = ro;
<a name="l00047"></a>00047 setFocusPolicy(ro ? QWidget::NoFocus : mFocusPolicy);
<a name="l00048"></a>00048 <span class="keywordflow">if</span> (ro)
<a name="l00049"></a>00049 clearFocus();
<a name="l00050"></a>00050 }
<a name="l00051"></a>00051 }
<a name="l00052"></a>00052
<a name="l00053"></a>00053 <span class="comment">/******************************************************************************</span>
<a name="l00054"></a>00054 <span class="comment">* Specify a widget to receive focus when the checkbox is clicked on.</span>
<a name="l00055"></a>00055 <span class="comment">*/</span>
<a name="l00056"></a><a class="code" href="classCheckBox.html#e59e134d93065baf4a921fd9c2c54430">00056</a> <span class="keywordtype">void</span> <a class="code" href="classCheckBox.html#e59e134d93065baf4a921fd9c2c54430" title="Specifies a widget to receive focus when the user selects the check box by clicking...">CheckBox::setFocusWidget</a>(QWidget* w, <span class="keywordtype">bool</span> enable)
<a name="l00057"></a>00057 {
<a name="l00058"></a>00058 mFocusWidget = w;
<a name="l00059"></a>00059 mFocusWidgetEnable = enable;
<a name="l00060"></a>00060 <span class="keywordflow">if</span> (w)
<a name="l00061"></a>00061 connect(<span class="keyword">this</span>, SIGNAL(clicked()), SLOT(slotClicked()));
<a name="l00062"></a>00062 <span class="keywordflow">else</span>
<a name="l00063"></a>00063 disconnect(<span class="keyword">this</span>, SIGNAL(clicked()), <span class="keyword">this</span>, SLOT(slotClicked()));
<a name="l00064"></a>00064 }
<a name="l00065"></a>00065
<a name="l00066"></a>00066 <span class="comment">/******************************************************************************</span>
<a name="l00067"></a>00067 <span class="comment">* Called when the checkbox is clicked.</span>
<a name="l00068"></a>00068 <span class="comment">* If it is now checked, focus is transferred to any specified focus widget.</span>
<a name="l00069"></a>00069 <span class="comment">*/</span>
<a name="l00070"></a>00070 <span class="keywordtype">void</span> CheckBox::slotClicked()
<a name="l00071"></a>00071 {
<a name="l00072"></a>00072 <span class="keywordflow">if</span> (mFocusWidget && isChecked())
<a name="l00073"></a>00073 {
<a name="l00074"></a>00074 <span class="keywordflow">if</span> (mFocusWidgetEnable)
<a name="l00075"></a>00075 mFocusWidget->setEnabled(<span class="keyword">true</span>);
<a name="l00076"></a>00076 mFocusWidget->setFocus();
<a name="l00077"></a>00077 }
<a name="l00078"></a>00078 }
<a name="l00079"></a>00079
<a name="l00080"></a>00080 <span class="comment">/******************************************************************************</span>
<a name="l00081"></a>00081 <span class="comment">* Event handlers to intercept events if in read-only mode.</span>
<a name="l00082"></a>00082 <span class="comment">* Any events which could change the checkbox state are discarded.</span>
<a name="l00083"></a>00083 <span class="comment">*/</span>
<a name="l00084"></a>00084 <span class="keywordtype">void</span> CheckBox::mousePressEvent(QMouseEvent* e)
<a name="l00085"></a>00085 {
<a name="l00086"></a>00086 <span class="keywordflow">if</span> (mReadOnly)
<a name="l00087"></a>00087 {
<a name="l00088"></a>00088 <span class="comment">// Swallow up the event if it's the left button</span>
<a name="l00089"></a>00089 <span class="keywordflow">if</span> (e->button() == Qt::LeftButton)
<a name="l00090"></a>00090 <span class="keywordflow">return</span>;
<a name="l00091"></a>00091 }
<a name="l00092"></a>00092 QCheckBox::mousePressEvent(e);
<a name="l00093"></a>00093 }
<a name="l00094"></a>00094
<a name="l00095"></a>00095 <span class="keywordtype">void</span> CheckBox::mouseReleaseEvent(QMouseEvent* e)
<a name="l00096"></a>00096 {
<a name="l00097"></a>00097 <span class="keywordflow">if</span> (mReadOnly)
<a name="l00098"></a>00098 {
<a name="l00099"></a>00099 <span class="comment">// Swallow up the event if it's the left button</span>
<a name="l00100"></a>00100 <span class="keywordflow">if</span> (e->button() == Qt::LeftButton)
<a name="l00101"></a>00101 <span class="keywordflow">return</span>;
<a name="l00102"></a>00102 }
<a name="l00103"></a>00103 QCheckBox::mouseReleaseEvent(e);
<a name="l00104"></a>00104 }
<a name="l00105"></a>00105
<a name="l00106"></a>00106 <span class="keywordtype">void</span> CheckBox::mouseMoveEvent(QMouseEvent* e)
<a name="l00107"></a>00107 {
<a name="l00108"></a>00108 <span class="keywordflow">if</span> (!mReadOnly)
<a name="l00109"></a>00109 QCheckBox::mouseMoveEvent(e);
<a name="l00110"></a>00110 }
<a name="l00111"></a>00111
<a name="l00112"></a>00112 <span class="keywordtype">void</span> CheckBox::keyPressEvent(QKeyEvent* e)
<a name="l00113"></a>00113 {
<a name="l00114"></a>00114 <span class="keywordflow">if</span> (mReadOnly)
<a name="l00115"></a>00115 <span class="keywordflow">switch</span> (e->key())
<a name="l00116"></a>00116 {
<a name="l00117"></a>00117 <span class="keywordflow">case</span> Qt::Key_Up:
<a name="l00118"></a>00118 <span class="keywordflow">case</span> Qt::Key_Left:
<a name="l00119"></a>00119 <span class="keywordflow">case</span> Qt::Key_Right:
<a name="l00120"></a>00120 <span class="keywordflow">case</span> Qt::Key_Down:
<a name="l00121"></a>00121 <span class="comment">// Process keys which shift the focus</span>
<a name="l00122"></a>00122 <span class="keywordflow">break</span>;
<a name="l00123"></a>00123 <span class="keywordflow">default</span>:
<a name="l00124"></a>00124 <span class="keywordflow">return</span>;
<a name="l00125"></a>00125 }
<a name="l00126"></a>00126 QCheckBox::keyPressEvent(e);
<a name="l00127"></a>00127 }
<a name="l00128"></a>00128
<a name="l00129"></a>00129 <span class="keywordtype">void</span> CheckBox::keyReleaseEvent(QKeyEvent* e)
<a name="l00130"></a>00130 {
<a name="l00131"></a>00131 <span class="keywordflow">if</span> (!mReadOnly)
<a name="l00132"></a>00132 QCheckBox::keyReleaseEvent(e);
<a name="l00133"></a>00133 }
</pre></div></div>
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