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<h1>dynamicSlider.cpp</h1><a href="dynamicSlider_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">//==============================================</span>
<a name="l00002"></a>00002 <span class="comment">// copyright : (C) 2003-2005 by Will Stokes</span>
<a name="l00003"></a>00003 <span class="comment">//==============================================</span>
<a name="l00004"></a>00004 <span class="comment">// This program is free software; you can redistribute it</span>
<a name="l00005"></a>00005 <span class="comment">// and/or modify it under the terms of the GNU General</span>
<a name="l00006"></a>00006 <span class="comment">// Public License as published by the Free Software</span>
<a name="l00007"></a>00007 <span class="comment">// Foundation; either version 2 of the License, or</span>
<a name="l00008"></a>00008 <span class="comment">// (at your option) any later version.</span>
<a name="l00009"></a>00009 <span class="comment">//==============================================</span>
<a name="l00010"></a>00010
<a name="l00011"></a>00011 <span class="preprocessor">#include <qapplication.h></span>
<a name="l00012"></a>00012 <span class="preprocessor">#include <qtooltip.h></span>
<a name="l00013"></a>00013
<a name="l00014"></a>00014 <span class="preprocessor">#include "<a class="code" href="dynamicSlider_8h.html">dynamicSlider.h</a>"</span>
<a name="l00015"></a>00015
<a name="l00016"></a>00016 <span class="comment">//==========================================</span>
<a name="l00017"></a><a class="code" href="classDynamicSlider.html#ec619f4dc976a4af83d645709469c11f">00017</a> <a class="code" href="classDynamicSlider.html#ec619f4dc976a4af83d645709469c11f">DynamicSlider::DynamicSlider</a>( Orientation orientation, <a class="code" href="classQWidget.html">QWidget</a>* parent,
<a name="l00018"></a>00018 <span class="keyword">const</span> <span class="keywordtype">char</span>* name) : <a class="code" href="classQSlider.html">QSlider</a>(orientation, parent, name)
<a name="l00019"></a>00019 {
<a name="l00020"></a>00020 <span class="comment">//determine the parent screen the tooltip will be displayed in and create tooltip</span>
<a name="l00021"></a>00021 <span class="keywordtype">int</span> scr = QApplication::desktop()->screenNumber( <span class="keyword">this</span> );
<a name="l00022"></a>00022 <a class="code" href="classDynamicSlider.html#baec59346de86d20ab3b080017fe9ddd">tooltip</a> = <span class="keyword">new</span> <a class="code" href="classSliderToolTip.html" title="private class used by the DynamicSlider to show tooltips. do not use!">SliderToolTip</a>( QApplication::desktop()->screen( scr ), <span class="keyword">this</span>);
<a name="l00023"></a>00023 <a class="code" href="classDynamicSlider.html#c47d3ba81f627f9733e48c918e6edf68">updateTooltipLabel</a>();
<a name="l00024"></a>00024
<a name="l00025"></a>00025 <span class="comment">//make sure tooltip label is updated when the slider value changes</span>
<a name="l00026"></a>00026 connect( <span class="keyword">this</span>, SIGNAL( valueChanged(<span class="keywordtype">int</span>) ),
<a name="l00027"></a>00027 <span class="keyword">this</span>, SLOT( <a class="code" href="classDynamicSlider.html#c47d3ba81f627f9733e48c918e6edf68">updateTooltipLabel</a>() ) );
<a name="l00028"></a>00028 }
<a name="l00029"></a>00029 <span class="comment">//==========================================</span>
<a name="l00030"></a><a class="code" href="classDynamicSlider.html#f1137a3524c8bf4a486dda3ea26985e9">00030</a> <a class="code" href="classDynamicSlider.html#f1137a3524c8bf4a486dda3ea26985e9">DynamicSlider::~DynamicSlider</a>()
<a name="l00031"></a>00031 {
<a name="l00032"></a>00032 <span class="keyword">delete</span> <a class="code" href="classDynamicSlider.html#baec59346de86d20ab3b080017fe9ddd">tooltip</a>;
<a name="l00033"></a>00033 <a class="code" href="classDynamicSlider.html#baec59346de86d20ab3b080017fe9ddd">tooltip</a> = NULL;
<a name="l00034"></a>00034 }
<a name="l00035"></a>00035 <span class="comment">//==========================================</span>
<a name="l00036"></a><a class="code" href="classDynamicSlider.html#750e540c9e41e4ffcc04634d3c126ebe">00036</a> <span class="keywordtype">void</span> <a class="code" href="classDynamicSlider.html#750e540c9e41e4ffcc04634d3c126ebe" title="when set, a zero string is shown instead of the current value/prefix/suffix when...">DynamicSlider::setZeroString</a>( QString val )
<a name="l00037"></a>00037 {
<a name="l00038"></a>00038 <a class="code" href="classDynamicSlider.html#3eab6794aae3292d2c852dedfc4960ad">zeroString</a> = val;
<a name="l00039"></a>00039 <a class="code" href="classDynamicSlider.html#c47d3ba81f627f9733e48c918e6edf68">updateTooltipLabel</a>();
<a name="l00040"></a>00040 }
<a name="l00041"></a>00041 <span class="comment">//==========================================</span>
<a name="l00042"></a><a class="code" href="classDynamicSlider.html#247eb6acc83ce4389654523e0a9318e3">00042</a> <span class="keywordtype">void</span> <a class="code" href="classDynamicSlider.html#247eb6acc83ce4389654523e0a9318e3" title="set the prefix that is displayed before the current slider value">DynamicSlider::setPrefix</a>( QString val )
<a name="l00043"></a>00043 {
<a name="l00044"></a>00044 <a class="code" href="classDynamicSlider.html#67551c3c8bcddc13e26a2eaec39a5e28">prefix1</a> = val;
<a name="l00045"></a>00045 <a class="code" href="classDynamicSlider.html#b9a1627f1d42ea2fec66edb419b1ca17">prefix2</a> = QString( NULL );
<a name="l00046"></a>00046 <a class="code" href="classDynamicSlider.html#c47d3ba81f627f9733e48c918e6edf68">updateTooltipLabel</a>();
<a name="l00047"></a>00047 }
<a name="l00048"></a>00048 <span class="comment">//==========================================</span>
<a name="l00049"></a><a class="code" href="classDynamicSlider.html#3468a9997b768c4464eede49b4c2b563">00049</a> <span class="keywordtype">void</span> <a class="code" href="classDynamicSlider.html#3468a9997b768c4464eede49b4c2b563" title="set two prefix values, one for when the value is positive and one for when the value...">DynamicSlider::setPrefixes</a>( QString v1, QString v2 )
<a name="l00050"></a>00050 {
<a name="l00051"></a>00051 <a class="code" href="classDynamicSlider.html#67551c3c8bcddc13e26a2eaec39a5e28">prefix1</a> = v1;
<a name="l00052"></a>00052 <a class="code" href="classDynamicSlider.html#b9a1627f1d42ea2fec66edb419b1ca17">prefix2</a> = v2;
<a name="l00053"></a>00053 <a class="code" href="classDynamicSlider.html#c47d3ba81f627f9733e48c918e6edf68">updateTooltipLabel</a>();
<a name="l00054"></a>00054 }
<a name="l00055"></a>00055 <span class="comment">//==========================================</span>
<a name="l00056"></a><a class="code" href="classDynamicSlider.html#c831f79ca17aec39750abbd2becff8ec">00056</a> <span class="keywordtype">void</span> <a class="code" href="classDynamicSlider.html#c831f79ca17aec39750abbd2becff8ec" title="set the suffix that is displayed after the current slider value">DynamicSlider::setSuffix</a>( QString val )
<a name="l00057"></a>00057 {
<a name="l00058"></a>00058 <a class="code" href="classDynamicSlider.html#6ded79116512c13de801ac9f68ea5b45">suffix1</a> = val;
<a name="l00059"></a>00059 <a class="code" href="classDynamicSlider.html#f2c9d87b3f761f66f42d8878cc7a4dfe">suffix2</a> = QString( NULL );
<a name="l00060"></a>00060 <a class="code" href="classDynamicSlider.html#c47d3ba81f627f9733e48c918e6edf68">updateTooltipLabel</a>();
<a name="l00061"></a>00061 }
<a name="l00062"></a>00062 <span class="comment">//==========================================</span>
<a name="l00063"></a><a class="code" href="classDynamicSlider.html#2087f6aa464708e9852be47a16c69d60">00063</a> <span class="keywordtype">void</span> <a class="code" href="classDynamicSlider.html#2087f6aa464708e9852be47a16c69d60" title="set two suffix values, one for when the value is positive and one for when the value...">DynamicSlider::setSuffixes</a>( QString v1, QString v2 )
<a name="l00064"></a>00064 {
<a name="l00065"></a>00065 <a class="code" href="classDynamicSlider.html#6ded79116512c13de801ac9f68ea5b45">suffix1</a> = v1;
<a name="l00066"></a>00066 <a class="code" href="classDynamicSlider.html#f2c9d87b3f761f66f42d8878cc7a4dfe">suffix2</a> = v2;
<a name="l00067"></a>00067 <a class="code" href="classDynamicSlider.html#c47d3ba81f627f9733e48c918e6edf68">updateTooltipLabel</a>();
<a name="l00068"></a>00068 }
<a name="l00069"></a>00069 <span class="comment">//==========================================</span>
<a name="l00070"></a><a class="code" href="classDynamicSlider.html#8267948ae30b6c03ce1ab34e47ce864e">00070</a> QString <a class="code" href="classDynamicSlider.html#8267948ae30b6c03ce1ab34e47ce864e" title="subclass DynamicSlider and reimplement this method to change the behavior used to...">DynamicSlider::mapValToString</a>()
<a name="l00071"></a>00071 {
<a name="l00072"></a>00072 <span class="comment">//the default behavior is to simply use the slider value directly</span>
<a name="l00073"></a>00073 <span class="keywordflow">if</span>( orientation() == Qt::Vertical )
<a name="l00074"></a>00074 <span class="keywordflow">return</span> QString(<span class="stringliteral">"%1"</span>).arg( -value() );
<a name="l00075"></a>00075 <span class="keywordflow">else</span>
<a name="l00076"></a>00076 <span class="keywordflow">return</span> QString(<span class="stringliteral">"%1"</span>).arg(value());
<a name="l00077"></a>00077 }
<a name="l00078"></a>00078 <span class="comment">//==========================================</span>
<a name="l00079"></a><a class="code" href="classDynamicSlider.html#c47d3ba81f627f9733e48c918e6edf68">00079</a> <span class="keywordtype">void</span> <a class="code" href="classDynamicSlider.html#c47d3ba81f627f9733e48c918e6edf68">DynamicSlider::updateTooltipLabel</a>()
<a name="l00080"></a>00080 {
<a name="l00081"></a>00081 <span class="comment">//determine string that will be used for tooltip</span>
<a name="l00082"></a>00082 QString tipString;
<a name="l00083"></a>00083
<a name="l00084"></a>00084 <span class="comment">//if the value is zero and a zero string has been provided used that</span>
<a name="l00085"></a>00085 <span class="keywordflow">if</span>( value() == 0 && !<a class="code" href="classDynamicSlider.html#3eab6794aae3292d2c852dedfc4960ad">zeroString</a>.isNull() )
<a name="l00086"></a>00086 {
<a name="l00087"></a>00087 tipString = <a class="code" href="classDynamicSlider.html#3eab6794aae3292d2c852dedfc4960ad">zeroString</a>;
<a name="l00088"></a>00088 }
<a name="l00089"></a>00089 <span class="comment">//otherwise construct a tip string using provided prefixes, suffixes, and the current slider value</span>
<a name="l00090"></a>00090 <span class="keywordflow">else</span>
<a name="l00091"></a>00091 {
<a name="l00092"></a>00092 <span class="comment">//determine prefix and suffix that will be used to construct tooltip string</span>
<a name="l00093"></a>00093 QString p, s;
<a name="l00094"></a>00094 <span class="keywordflow">if</span>( value() > 0 || <a class="code" href="classDynamicSlider.html#b9a1627f1d42ea2fec66edb419b1ca17">prefix2</a>.isNull() ) p = <a class="code" href="classDynamicSlider.html#67551c3c8bcddc13e26a2eaec39a5e28">prefix1</a>;
<a name="l00095"></a>00095 <span class="keywordflow">else</span> p = <a class="code" href="classDynamicSlider.html#b9a1627f1d42ea2fec66edb419b1ca17">prefix2</a>;
<a name="l00096"></a>00096
<a name="l00097"></a>00097 <span class="keywordflow">if</span>( value() > 0 || <a class="code" href="classDynamicSlider.html#f2c9d87b3f761f66f42d8878cc7a4dfe">suffix2</a>.isNull() ) s = <a class="code" href="classDynamicSlider.html#6ded79116512c13de801ac9f68ea5b45">suffix1</a>;
<a name="l00098"></a>00098 <span class="keywordflow">else</span> s = <a class="code" href="classDynamicSlider.html#f2c9d87b3f761f66f42d8878cc7a4dfe">suffix2</a>;
<a name="l00099"></a>00099
<a name="l00100"></a>00100 <span class="comment">//construct tipstring</span>
<a name="l00101"></a>00101 tipString = QString(<span class="stringliteral">"%1%2%3"</span>).arg(p).arg(<a class="code" href="classDynamicSlider.html#8267948ae30b6c03ce1ab34e47ce864e" title="subclass DynamicSlider and reimplement this method to change the behavior used to...">mapValToString</a>()).arg(s);
<a name="l00102"></a>00102
<a name="l00103"></a>00103 }
<a name="l00104"></a>00104
<a name="l00105"></a>00105 <span class="comment">//update tooltip</span>
<a name="l00106"></a>00106 <a class="code" href="classDynamicSlider.html#baec59346de86d20ab3b080017fe9ddd">tooltip</a>->setText( tipString );
<a name="l00107"></a>00107 <a class="code" href="classDynamicSlider.html#baec59346de86d20ab3b080017fe9ddd">tooltip</a>->adjustSize();
<a name="l00108"></a>00108 <span class="keywordflow">if</span>( <a class="code" href="classDynamicSlider.html#baec59346de86d20ab3b080017fe9ddd">tooltip</a>->isShown() ) qApp->processEvents();
<a name="l00109"></a>00109 }
<a name="l00110"></a>00110 <span class="comment">//==========================================</span>
<a name="l00111"></a><a class="code" href="classDynamicSlider.html#68c456c52ccf9346b04330ec66314187">00111</a> <span class="keywordtype">void</span> <a class="code" href="classDynamicSlider.html#68c456c52ccf9346b04330ec66314187">DynamicSlider::mouseMoveEvent</a>(QMouseEvent* e)
<a name="l00112"></a>00112 {
<a name="l00113"></a>00113 <span class="comment">//cache the mouse position since the tooltip will need this information when updating itself</span>
<a name="l00114"></a>00114 <a class="code" href="classDynamicSlider.html#b00ccc1a115d7e5d7f749e0f5f8f9b69">cachedMousePos</a> = e->pos();
<a name="l00115"></a>00115 <a class="code" href="classDynamicSlider.html#68c456c52ccf9346b04330ec66314187">QSlider::mouseMoveEvent</a>(e);
<a name="l00116"></a>00116 emit <a class="code" href="classDynamicSlider.html#795da3b646f8b45c729e460254ba25b5">mouseHasMoved</a>();
<a name="l00117"></a>00117 }
<a name="l00118"></a>00118 <span class="comment">//==========================================</span>
<a name="l00119"></a><a class="code" href="classDynamicSlider.html#0616c467378ee6a213e8e62e629ce601">00119</a> QPoint <a class="code" href="classDynamicSlider.html#0616c467378ee6a213e8e62e629ce601">DynamicSlider::getMousePos</a>() { <span class="keywordflow">return</span> <a class="code" href="classDynamicSlider.html#b00ccc1a115d7e5d7f749e0f5f8f9b69">cachedMousePos</a>; }
<a name="l00120"></a>00120 <span class="comment">//==========================================</span>
<a name="l00121"></a><a class="code" href="classSliderToolTip.html#95194b0b82c3f67c0749856b6eebc340">00121</a> <a class="code" href="classSliderToolTip.html#95194b0b82c3f67c0749856b6eebc340">SliderToolTip::SliderToolTip</a>( <a class="code" href="classQWidget.html">QWidget</a>* parent, <a class="code" href="classDynamicSlider.html" title="A more dynamic slider that provides moving tooltips that show the slider value.">DynamicSlider</a>* slider)
<a name="l00122"></a>00122 : <a class="code" href="classQLabel.html">QLabel</a>( parent, <span class="stringliteral">"toolTipTip"</span>,
<a name="l00123"></a>00123 WStyle_StaysOnTop | WStyle_Customize |
<a name="l00124"></a>00124 WStyle_NoBorder | WStyle_Tool | WX11BypassWM )
<a name="l00125"></a>00125 {
<a name="l00126"></a>00126 <span class="comment">//store slider handle </span>
<a name="l00127"></a>00127 this->slider = slider;
<a name="l00128"></a>00128
<a name="l00129"></a>00129 <span class="comment">//setup lable to use standard black writing on a light yellow background so it</span>
<a name="l00130"></a>00130 <span class="comment">//looks like a normal tooltip</span>
<a name="l00131"></a>00131 setPaletteForegroundColor( QColor(<span class="stringliteral">"Black"</span>) );
<a name="l00132"></a>00132 setPaletteBackgroundColor( QColor(<span class="stringliteral">"LightYellow"</span>) );
<a name="l00133"></a>00133
<a name="l00134"></a>00134 <span class="comment">//use default system tooltip font</span>
<a name="l00135"></a>00135 setFont( QToolTip::font() );
<a name="l00136"></a>00136
<a name="l00137"></a>00137 <span class="comment">//setup the otherparmslike a frame etc so it looks like a normal tooltip</span>
<a name="l00138"></a>00138 setMargin(1);
<a name="l00139"></a>00139 setAutoMask( FALSE );
<a name="l00140"></a>00140 setFrameStyle( QFrame::Plain | QFrame::Box );
<a name="l00141"></a>00141 setLineWidth( 1 );
<a name="l00142"></a>00142 setAlignment( AlignAuto | AlignTop );
<a name="l00143"></a>00143 setIndent(0);
<a name="l00144"></a>00144 polish();
<a name="l00145"></a>00145 adjustSize();
<a name="l00146"></a>00146
<a name="l00147"></a>00147 <span class="comment">//show the tooltip when the user presses the slider</span>
<a name="l00148"></a>00148 connect( slider, SIGNAL( sliderPressed() ), <span class="keyword">this</span>, SLOT( <a class="code" href="classSliderToolTip.html#4741a23998857159a43f8a6eeaa63728">showTooltip</a>() ) );
<a name="l00149"></a>00149
<a name="l00150"></a>00150 <span class="comment">//move tooltip to follow the slider handle</span>
<a name="l00151"></a>00151 setMouseTracking(<span class="keyword">true</span>);
<a name="l00152"></a>00152 connect( slider, SIGNAL( mouseHasMoved() ), <span class="keyword">this</span>, SLOT( <a class="code" href="classSliderToolTip.html#eb87ea9e5448733241847a31ad8de4fa">update</a>() ) );
<a name="l00153"></a>00153
<a name="l00154"></a>00154 <span class="comment">//hide tooltip when users releases the slider</span>
<a name="l00155"></a>00155 connect( slider, SIGNAL( sliderReleased() ), <span class="keyword">this</span>, SLOT( <a class="code" href="classSliderToolTip.html#d32e4f2734d2693bfe4211256d21f03d">hideTooltip</a>() ) );
<a name="l00156"></a>00156 }
<a name="l00157"></a>00157 <span class="comment">//==========================================</span>
<a name="l00158"></a><a class="code" href="classSliderToolTip.html#4741a23998857159a43f8a6eeaa63728">00158</a> <span class="keywordtype">void</span> <a class="code" href="classSliderToolTip.html#4741a23998857159a43f8a6eeaa63728">SliderToolTip::showTooltip</a>()
<a name="l00159"></a>00159 {
<a name="l00160"></a>00160 <span class="comment">//make sure label is up-to-date</span>
<a name="l00161"></a>00161 <a class="code" href="classSliderToolTip.html#eb87ea9e5448733241847a31ad8de4fa">update</a>();
<a name="l00162"></a>00162 show();
<a name="l00163"></a>00163 }
<a name="l00164"></a>00164 <span class="comment">//==========================================</span>
<a name="l00165"></a><a class="code" href="classSliderToolTip.html#d32e4f2734d2693bfe4211256d21f03d">00165</a> <span class="keywordtype">void</span> <a class="code" href="classSliderToolTip.html#d32e4f2734d2693bfe4211256d21f03d">SliderToolTip::hideTooltip</a>() { hide(); }
<a name="l00166"></a>00166 <span class="comment">//==========================================</span>
<a name="l00167"></a><a class="code" href="classSliderToolTip.html#eb87ea9e5448733241847a31ad8de4fa">00167</a> <span class="keywordtype">void</span> <a class="code" href="classSliderToolTip.html#eb87ea9e5448733241847a31ad8de4fa">SliderToolTip::update</a>()
<a name="l00168"></a>00168 {
<a name="l00169"></a>00169 <span class="comment">//margin well provide betweent the slider and the tooltip</span>
<a name="l00170"></a>00170 <span class="keyword">const</span> <span class="keywordtype">int</span> TOOLTIP_MARGIN = 4;
<a name="l00171"></a>00171
<a name="l00172"></a>00172 <span class="comment">//fetch slider handle rect</span>
<a name="l00173"></a>00173 QRect sliderRect = <a class="code" href="classSliderToolTip.html#675a4a11a7dca57ee08601ab6c82dccc">slider</a>->sliderRect();
<a name="l00174"></a>00174
<a name="l00175"></a>00175 <span class="comment">//determine location tooltip will be shown</span>
<a name="l00176"></a>00176 QPoint tooltipTopLeft;
<a name="l00177"></a>00177 <span class="keywordflow">if</span>( <a class="code" href="classSliderToolTip.html#675a4a11a7dca57ee08601ab6c82dccc">slider</a>->orientation() == Qt::Horizontal )
<a name="l00178"></a>00178 {
<a name="l00179"></a>00179 tooltipTopLeft = QPoint( sliderRect.right() + TOOLTIP_MARGIN,
<a name="l00180"></a>00180 <a class="code" href="classSliderToolTip.html#675a4a11a7dca57ee08601ab6c82dccc">slider</a>-><a class="code" href="classDynamicSlider.html#0616c467378ee6a213e8e62e629ce601">getMousePos</a>().y() >= sliderRect.top() ?
<a name="l00181"></a>00181 sliderRect.top() - TOOLTIP_MARGIN - <a class="code" href="blur_8cpp.html#d12fc34ce789bce6c8a05d8a17138534">height</a>() :
<a name="l00182"></a>00182 sliderRect.bottom() + TOOLTIP_MARGIN );
<a name="l00183"></a>00183 }
<a name="l00184"></a>00184 <span class="keywordflow">else</span>
<a name="l00185"></a>00185 {
<a name="l00186"></a>00186 tooltipTopLeft = QPoint( <a class="code" href="classSliderToolTip.html#675a4a11a7dca57ee08601ab6c82dccc">slider</a>-><a class="code" href="classDynamicSlider.html#0616c467378ee6a213e8e62e629ce601">getMousePos</a>().x() >= sliderRect.right() ?
<a name="l00187"></a>00187 sliderRect.left() - TOOLTIP_MARGIN - <a class="code" href="blur_8cpp.html#2474a5474cbff19523a51eb1de01cda4">width</a>() :
<a name="l00188"></a>00188 sliderRect.right() + TOOLTIP_MARGIN,
<a name="l00189"></a>00189 (sliderRect.top() + sliderRect.bottom())/2 - <a class="code" href="blur_8cpp.html#d12fc34ce789bce6c8a05d8a17138534">height</a>()/2 );
<a name="l00190"></a>00190 }
<a name="l00191"></a>00191
<a name="l00192"></a>00192 <span class="comment">//map tooltip position from slider widget to screen coordinates</span>
<a name="l00193"></a>00193 tooltipTopLeft = <a class="code" href="classSliderToolTip.html#675a4a11a7dca57ee08601ab6c82dccc">slider</a>->mapToGlobal( tooltipTopLeft );
<a name="l00194"></a>00194
<a name="l00195"></a>00195 <span class="comment">//position tooltip</span>
<a name="l00196"></a>00196 move( tooltipTopLeft );
<a name="l00197"></a>00197 <span class="keywordflow">if</span>( isShown() ) qApp->processEvents();
<a name="l00198"></a>00198 }
<a name="l00199"></a>00199 <span class="comment">//==========================================</span>
</pre></div></div>
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