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<h1>histogramInterface.cpp</h1><a href="histogramInterface_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="comment">//Systemwide includes</span>
<a name="l00012"></a>00012 <span class="preprocessor">#include <qapplication.h></span>
<a name="l00013"></a>00013 <span class="preprocessor">#include <qpainter.h></span>
<a name="l00014"></a>00014 <span class="preprocessor">#include <qpixmap.h></span>
<a name="l00015"></a>00015 <span class="preprocessor">#include <qimage.h></span>
<a name="l00016"></a>00016 <span class="preprocessor">#include <qaccel.h></span>
<a name="l00017"></a>00017 <span class="preprocessor">#include <qcursor.h></span>
<a name="l00018"></a>00018
<a name="l00019"></a>00019 <span class="comment">//Projectwide includes</span>
<a name="l00020"></a>00020 <span class="preprocessor">#include "<a class="code" href="histogramInterface_8h.html">histogramInterface.h</a>"</span>
<a name="l00021"></a>00021 <span class="preprocessor">#include "<a class="code" href="histogramEditor_8h.html">histogramEditor.h</a>"</span>
<a name="l00022"></a>00022 <span class="preprocessor">#include "../../backend/tools/imageTools.h"</span>
<a name="l00023"></a>00023 <span class="preprocessor">#include "../cursors.h"</span>
<a name="l00024"></a>00024
<a name="l00025"></a>00025 <span class="comment">//a mouse press within DRAG_THRESHOLD will move boundaries of selection</span>
<a name="l00026"></a>00026 <span class="comment">//if mouse press is not within DRAG_THRESHOLD a new selection will be started</span>
<a name="l00027"></a>00027 <span class="comment">//and both click and drag points will be reset</span>
<a name="l00028"></a><a class="code" href="histogramInterface_8cpp.html#dbab52be17168e6914dd8ab79ce5fcd2">00028</a> <span class="preprocessor">#define DRAG_THRESHOLD 5</span>
<a name="l00029"></a>00029 <span class="preprocessor"></span>
<a name="l00030"></a><a class="code" href="histogramInterface_8cpp.html#7de3a77a1aace94056e3bbf410a94648">00030</a> <span class="preprocessor">#define COLOR_BAR_MARGIN 2</span>
<a name="l00031"></a><a class="code" href="histogramInterface_8cpp.html#7fe30b41da5cfd303bd5b87305aae9c5">00031</a> <span class="preprocessor"></span><span class="preprocessor">#define COLOR_BAR_BORDER 2</span>
<a name="l00032"></a><a class="code" href="histogramInterface_8cpp.html#c048e12ca829cb014d17cd1badcd2e84">00032</a> <span class="preprocessor"></span><span class="preprocessor">#define COLOR_BAR_HEIGHT 6</span>
<a name="l00033"></a><a class="code" href="histogramInterface_8cpp.html#915fea918ff9711fb8aad5029f4a7844">00033</a> <span class="preprocessor"></span><span class="preprocessor">#define HISTOGRAM_HEIGHT ( height() - COLOR_BAR_BORDER - 2*COLOR_BAR_MARGIN - COLOR_BAR_HEIGHT )</span>
<a name="l00034"></a>00034 <span class="preprocessor"></span>
<a name="l00035"></a>00035 <span class="comment">//==============================================</span>
<a name="l00036"></a><a class="code" href="classHistogramInterface.html#3fee62be6f7fc87cde10b9d6712095ce">00036</a> <a class="code" href="classHistogramInterface.html#3fee62be6f7fc87cde10b9d6712095ce" title="Creates layout.">HistogramInterface::HistogramInterface</a>( QString imageFilename,
<a name="l00037"></a>00037 <a class="code" href="classQWidget.html">QWidget</a> *parent, <span class="keyword">const</span> <span class="keywordtype">char</span>* name ) :
<a name="l00038"></a>00038 <a class="code" href="classQWidget.html">QWidget</a> (parent, name, WNoAutoErase)
<a name="l00039"></a>00039 {
<a name="l00040"></a>00040 <span class="comment">//set default mode to adjusted image</span>
<a name="l00041"></a>00041 <a class="code" href="classHistogramInterface.html#005d412a06b0a721550ad2e6771472ad" title="Currently displayed channel.">displayedChannel</a> = <a class="code" href="histogramInterface_8h.html#435afa8a7ae5dd59e451491c9e221c8c5541521f58ed91756b07fbc0df85137b">LUMINOSITY</a>;
<a name="l00042"></a>00042
<a name="l00043"></a>00043 <span class="comment">//record original image width and height</span>
<a name="l00044"></a>00044 <a class="code" href="imageTools_8cpp.html#2af7f0a9c4f931ad3213c36796e95288" title="Get image dimensions.">getImageSize</a>( imageFilename, <a class="code" href="classHistogramInterface.html#3d00d362e2f88b7ecc9c91cd4a6501f8" title="original image dimensions, needed for painting">origImageSize</a> );
<a name="l00045"></a>00045
<a name="l00046"></a>00046 <span class="comment">//construct histogram for color and luminosity channels</span>
<a name="l00047"></a>00047 <span class="comment">//resize image to current screen size for faster</span>
<a name="l00048"></a>00048 <span class="comment">//scaling during resize events</span>
<a name="l00049"></a>00049 QRect screenSize = qApp->desktop()->availableGeometry();
<a name="l00050"></a>00050 QImage image;
<a name="l00051"></a>00051 <a class="code" href="imageTools_8cpp.html#126e11984fb8124e78e3b1b68a24870c" title="Scale image and save copy to disk.">scaleImage</a>( imageFilename, image, screenSize.width()/4, screenSize.height()/4 );
<a name="l00052"></a>00052
<a name="l00053"></a>00053 <span class="keywordtype">int</span> i;
<a name="l00054"></a>00054 <span class="keywordflow">for</span>(i=0; i<256; i++)
<a name="l00055"></a>00055 {
<a name="l00056"></a>00056 <a class="code" href="classHistogramInterface.html#264a35c05cd4a2a07a788eddc59fb1c9" title="color and luminosity histograms">redVals</a>[i] = 0;
<a name="l00057"></a>00057 <a class="code" href="classHistogramInterface.html#ea8d7c5b0ef52e4830f254733e3c65c8">greenVals</a>[i] = 0;
<a name="l00058"></a>00058 <a class="code" href="classHistogramInterface.html#dea84cd738a840ded8460c4ad3154414">blueVals</a>[i] = 0;
<a name="l00059"></a>00059 <a class="code" href="classHistogramInterface.html#9ba8f2a0167eaf22e8547cc5f417a0c0">grayVals</a>[i] = 0;
<a name="l00060"></a>00060 }
<a name="l00061"></a>00061 <span class="keywordtype">int</span> x, y;
<a name="l00062"></a>00062 QRgb* rgb;
<a name="l00063"></a>00063 uchar* scanLine;
<a name="l00064"></a>00064 <span class="keywordflow">for</span>( y=0; y<image.height(); y++)
<a name="l00065"></a>00065 {
<a name="l00066"></a>00066 scanLine = image.scanLine(y);
<a name="l00067"></a>00067 <span class="keywordflow">for</span>( x=0; x<image.width(); x++)
<a name="l00068"></a>00068 {
<a name="l00069"></a>00069 rgb = ((QRgb*)scanLine+x);
<a name="l00070"></a>00070 <a class="code" href="classHistogramInterface.html#264a35c05cd4a2a07a788eddc59fb1c9" title="color and luminosity histograms">redVals</a>[ qRed(*rgb) ]++;
<a name="l00071"></a>00071 <a class="code" href="classHistogramInterface.html#ea8d7c5b0ef52e4830f254733e3c65c8">greenVals</a>[ qGreen(*rgb) ]++;
<a name="l00072"></a>00072 <a class="code" href="classHistogramInterface.html#dea84cd738a840ded8460c4ad3154414">blueVals</a>[ qBlue(*rgb) ]++;
<a name="l00073"></a>00073 <a class="code" href="classHistogramInterface.html#9ba8f2a0167eaf22e8547cc5f417a0c0">grayVals</a>[ qGray(*rgb) ]++;
<a name="l00074"></a>00074 } <span class="comment">//x</span>
<a name="l00075"></a>00075 } <span class="comment">//y</span>
<a name="l00076"></a>00076
<a name="l00077"></a>00077 <span class="comment">//find max r,g,b, and gray counts</span>
<a name="l00078"></a>00078 <a class="code" href="classHistogramInterface.html#c121590b892cb920b6260d220b84fae7" title="max r,g,b, and gray counts">maxRcount</a> = 0;
<a name="l00079"></a>00079 <a class="code" href="classHistogramInterface.html#03b8ff199cfe546459b6894e87eb4bc6">maxGcount</a> = 0;
<a name="l00080"></a>00080 <a class="code" href="classHistogramInterface.html#8ca76cbbcb85f7a598c249b2c5df70d9">maxBcount</a> = 0;
<a name="l00081"></a>00081 <a class="code" href="classHistogramInterface.html#002f958b7305f8d1f55a4c1112306b18">maxGRAYcount</a> = 0;
<a name="l00082"></a>00082 <span class="keywordflow">for</span>(i=0; i<256; i++)
<a name="l00083"></a>00083 {
<a name="l00084"></a>00084 <span class="keywordflow">if</span>(<a class="code" href="classHistogramInterface.html#264a35c05cd4a2a07a788eddc59fb1c9" title="color and luminosity histograms">redVals</a>[i] > <a class="code" href="classHistogramInterface.html#c121590b892cb920b6260d220b84fae7" title="max r,g,b, and gray counts">maxRcount</a>) <a class="code" href="classHistogramInterface.html#c121590b892cb920b6260d220b84fae7" title="max r,g,b, and gray counts">maxRcount</a> = <a class="code" href="classHistogramInterface.html#264a35c05cd4a2a07a788eddc59fb1c9" title="color and luminosity histograms">redVals</a>[i];
<a name="l00085"></a>00085 <span class="keywordflow">if</span>(<a class="code" href="classHistogramInterface.html#ea8d7c5b0ef52e4830f254733e3c65c8">greenVals</a>[i] > <a class="code" href="classHistogramInterface.html#03b8ff199cfe546459b6894e87eb4bc6">maxGcount</a>) <a class="code" href="classHistogramInterface.html#03b8ff199cfe546459b6894e87eb4bc6">maxGcount</a> = <a class="code" href="classHistogramInterface.html#ea8d7c5b0ef52e4830f254733e3c65c8">greenVals</a>[i];
<a name="l00086"></a>00086 <span class="keywordflow">if</span>(<a class="code" href="classHistogramInterface.html#dea84cd738a840ded8460c4ad3154414">blueVals</a>[i] > <a class="code" href="classHistogramInterface.html#8ca76cbbcb85f7a598c249b2c5df70d9">maxBcount</a>) <a class="code" href="classHistogramInterface.html#8ca76cbbcb85f7a598c249b2c5df70d9">maxBcount</a> = <a class="code" href="classHistogramInterface.html#dea84cd738a840ded8460c4ad3154414">blueVals</a>[i];
<a name="l00087"></a>00087 <span class="keywordflow">if</span>(<a class="code" href="classHistogramInterface.html#9ba8f2a0167eaf22e8547cc5f417a0c0">grayVals</a>[i] > <a class="code" href="classHistogramInterface.html#002f958b7305f8d1f55a4c1112306b18">maxGRAYcount</a>) <a class="code" href="classHistogramInterface.html#002f958b7305f8d1f55a4c1112306b18">maxGRAYcount</a> = <a class="code" href="classHistogramInterface.html#9ba8f2a0167eaf22e8547cc5f417a0c0">grayVals</a>[i];
<a name="l00088"></a>00088 }
<a name="l00089"></a>00089 <span class="comment">//---- </span>
<a name="l00090"></a>00090 <span class="comment">//by default mouse drags have no effect</span>
<a name="l00091"></a>00091 <a class="code" href="classHistogramInterface.html#7c74c0c3c02444b6ff4b3b5c9608514a" title="effect of mouse drags">dragMode</a> = <a class="code" href="histogramInterface_8h.html#4d26b3730bd5b62a87de6a6b062cc88a548126d587d43d3630c45cd091e095f7">NO_EFFECT</a>;
<a name="l00092"></a>00092 <a class="code" href="classHistogramInterface.html#8e91960530b360d49fbe0a94a0090f88" title="current mouse shape.">currentMouseShape</a> = <a class="code" href="histogramInterface_8h.html#4d26b3730bd5b62a87de6a6b062cc88a548126d587d43d3630c45cd091e095f7">NO_EFFECT</a>;
<a name="l00093"></a>00093
<a name="l00094"></a>00094 <span class="comment">//watch mouse movements in order to drag selection</span>
<a name="l00095"></a>00095 setMouseTracking(<span class="keyword">true</span>);
<a name="l00096"></a>00096
<a name="l00097"></a>00097 <span class="comment">//accept focus when clicked on</span>
<a name="l00098"></a>00098 setFocusPolicy( QWidget::ClickFocus );
<a name="l00099"></a>00099
<a name="l00101"></a>00101 QAccel *keyAccel = <span class="keyword">new</span> QAccel( <span class="keyword">this</span> );
<a name="l00102"></a>00102 keyAccel->connectItem( keyAccel->insertItem( CTRL + Key_A),
<a name="l00103"></a>00103 <span class="keyword">this</span>, SLOT(<a class="code" href="classHistogramInterface.html#d0d7771f807788e772d3fa44b9d071c3">selectAll</a>()) );
<a name="l00104"></a>00104
<a name="l00105"></a>00105 <span class="comment">//default cursor is cross hair indication regions can be selected</span>
<a name="l00106"></a>00106 setCursor( <a class="code" href="cursors_8cpp.html#8d89fd03db7e35090175ec42e8af8f3f">getCursor</a>(<a class="code" href="cursors_8h.html#384a874a43b4618a4c20506728f1c647c7f7eb79f43d18a0d6f51be79e78f012">CROSS_CURSOR</a>) );
<a name="l00107"></a>00107
<a name="l00108"></a>00108 <span class="comment">//by default entire range is selected for all channels</span>
<a name="l00109"></a>00109 <a class="code" href="classHistogramInterface.html#a50e91749fffe828524ae0248f66b4d5" title="resets all boundaries">resetBoundaries</a>();
<a name="l00110"></a>00110 }
<a name="l00111"></a>00111 <span class="comment">//==============================================</span>
<a name="l00112"></a><a class="code" href="classHistogramInterface.html#c9a373a0d136a0651a6f2df94499966e">00112</a> <a class="code" href="classHistogramInterface.html#c9a373a0d136a0651a6f2df94499966e" title="Deletes objects.">HistogramInterface::~HistogramInterface</a>() { }
<a name="l00113"></a>00113 <span class="comment">//==============================================</span>
<a name="l00114"></a><a class="code" href="classHistogramInterface.html#63f3252bd55b3c14da690121d76e5522">00114</a> <span class="keywordtype">void</span> <a class="code" href="classHistogramInterface.html#63f3252bd55b3c14da690121d76e5522">HistogramInterface::resizeEvent</a>( QResizeEvent * )
<a name="l00115"></a>00115 {
<a name="l00116"></a>00116 repaint(<span class="keyword">false</span>);
<a name="l00117"></a>00117 }
<a name="l00118"></a>00118 <span class="comment">//==============================================</span>
<a name="l00119"></a><a class="code" href="classHistogramInterface.html#b8fcdebab7917f3725ac3a67b1386f68">00119</a> <span class="keywordtype">void</span> <a class="code" href="classHistogramInterface.html#b8fcdebab7917f3725ac3a67b1386f68" title="this utility function finds currently selected range">HistogramInterface::getSelectedRange</a>( <span class="keywordtype">int</span> &left, <span class="keywordtype">int</span> &right )
<a name="l00120"></a>00120 {
<a name="l00121"></a>00121 <span class="keywordflow">if</span>(<a class="code" href="classHistogramInterface.html#005d412a06b0a721550ad2e6771472ad" title="Currently displayed channel.">displayedChannel</a> == <a class="code" href="histogramInterface_8h.html#435afa8a7ae5dd59e451491c9e221c8c5541521f58ed91756b07fbc0df85137b">LUMINOSITY</a>)
<a name="l00122"></a>00122 {
<a name="l00123"></a>00123 left = QMIN( <a class="code" href="classHistogramInterface.html#f3fc052e8ec7735210cbe0fe94b7c248" title="left and right bounds for each channel">lumClick</a>, <a class="code" href="classHistogramInterface.html#23ba1cfd72013e546982553419763aac">lumDrag</a> );
<a name="l00124"></a>00124 right = QMAX( <a class="code" href="classHistogramInterface.html#f3fc052e8ec7735210cbe0fe94b7c248" title="left and right bounds for each channel">lumClick</a>, <a class="code" href="classHistogramInterface.html#23ba1cfd72013e546982553419763aac">lumDrag</a> );
<a name="l00125"></a>00125 }
<a name="l00126"></a>00126 <span class="keywordflow">else</span> <span class="keywordflow">if</span>(<a class="code" href="classHistogramInterface.html#005d412a06b0a721550ad2e6771472ad" title="Currently displayed channel.">displayedChannel</a> == <a class="code" href="histogramInterface_8h.html#435afa8a7ae5dd59e451491c9e221c8cf80f9a890089d211842d59625e561f88">RED</a>)
<a name="l00127"></a>00127 {
<a name="l00128"></a>00128 left = QMIN( <a class="code" href="classHistogramInterface.html#bb0fff71ccb28404c55975e441880fbd">redClick</a>, <a class="code" href="classHistogramInterface.html#9926622cab9d0479639fe0b3ea48dece">redDrag</a> );
<a name="l00129"></a>00129 right = QMAX( <a class="code" href="classHistogramInterface.html#bb0fff71ccb28404c55975e441880fbd">redClick</a>, <a class="code" href="classHistogramInterface.html#9926622cab9d0479639fe0b3ea48dece">redDrag</a> );
<a name="l00130"></a>00130 }
<a name="l00131"></a>00131 <span class="keywordflow">else</span> <span class="keywordflow">if</span>(<a class="code" href="classHistogramInterface.html#005d412a06b0a721550ad2e6771472ad" title="Currently displayed channel.">displayedChannel</a> == <a class="code" href="histogramInterface_8h.html#435afa8a7ae5dd59e451491c9e221c8ca60bd322f93178d68184e30e162571ca">GREEN</a>)
<a name="l00132"></a>00132 {
<a name="l00133"></a>00133 left = QMIN( <a class="code" href="classHistogramInterface.html#64b0c0b295c4c3c8ccfb0ddf64e06350">greenClick</a>, <a class="code" href="classHistogramInterface.html#58a584d1a02a5fd39540bd513a1c9ef4">greenDrag</a> );
<a name="l00134"></a>00134 right = QMAX( <a class="code" href="classHistogramInterface.html#64b0c0b295c4c3c8ccfb0ddf64e06350">greenClick</a>, <a class="code" href="classHistogramInterface.html#58a584d1a02a5fd39540bd513a1c9ef4">greenDrag</a> );
<a name="l00135"></a>00135 }
<a name="l00136"></a>00136 <span class="keywordflow">else</span> <span class="keywordflow">if</span>(<a class="code" href="classHistogramInterface.html#005d412a06b0a721550ad2e6771472ad" title="Currently displayed channel.">displayedChannel</a> == <a class="code" href="histogramInterface_8h.html#435afa8a7ae5dd59e451491c9e221c8c35d6719cb4d7577c031b3d79057a1b79">BLUE</a>)
<a name="l00137"></a>00137 {
<a name="l00138"></a>00138 left = QMIN( <a class="code" href="classHistogramInterface.html#75e62e75624002bbfa0618d5568ba5a2">blueClick</a>, <a class="code" href="classHistogramInterface.html#ab53e01ee86860b86d0fad0ecd8a2a00">blueDrag</a> );
<a name="l00139"></a>00139 right = QMAX( <a class="code" href="classHistogramInterface.html#75e62e75624002bbfa0618d5568ba5a2">blueClick</a>, <a class="code" href="classHistogramInterface.html#ab53e01ee86860b86d0fad0ecd8a2a00">blueDrag</a> );
<a name="l00140"></a>00140 }
<a name="l00141"></a>00141 <span class="keywordflow">else</span>
<a name="l00142"></a>00142 { left = 0; right = 0; }
<a name="l00143"></a>00143 }
<a name="l00144"></a>00144 <span class="comment">//==============================================</span>
<a name="l00145"></a><a class="code" href="classHistogramInterface.html#84b7e990d4dbbb974daff7ab3e1b9784">00145</a> <span class="keywordtype">double</span> <a class="code" href="classHistogramInterface.html#84b7e990d4dbbb974daff7ab3e1b9784" title="convert screen coordinate to index in 0-255 range">HistogramInterface::displayToIndex</a>( <span class="keywordtype">int</span> coordinate )
<a name="l00146"></a>00146 {
<a name="l00147"></a>00147 <span class="keywordflow">return</span> (255.0*coordinate) / ( <a class="code" href="blur_8cpp.html#2474a5474cbff19523a51eb1de01cda4">width</a>()-1 );
<a name="l00148"></a>00148 }
<a name="l00149"></a>00149 <span class="comment">//==============================================</span>
<a name="l00150"></a><a class="code" href="classHistogramInterface.html#99a2daa291c70090c5a97c0d5afe81d1">00150</a> <span class="keywordtype">int</span> <a class="code" href="classHistogramInterface.html#99a2daa291c70090c5a97c0d5afe81d1" title="converts index in 0-255 ranges to screen coordinate">HistogramInterface::indexToDisplay</a>( <span class="keywordtype">int</span> index )
<a name="l00151"></a>00151 {
<a name="l00152"></a>00152 <span class="keywordflow">return</span> (index* (<a class="code" href="blur_8cpp.html#2474a5474cbff19523a51eb1de01cda4">width</a>()-1) ) / 255;
<a name="l00153"></a>00153 }
<a name="l00154"></a>00154 <span class="comment">//==============================================</span>
<a name="l00155"></a><a class="code" href="classHistogramInterface.html#fd5ec9e9e4e2fa256164ddbe36f01f15">00155</a> <span class="keywordtype">void</span> <a class="code" href="classHistogramInterface.html#fd5ec9e9e4e2fa256164ddbe36f01f15">HistogramInterface::paintEvent</a>(QPaintEvent *e)
<a name="l00156"></a>00156 {
<a name="l00157"></a>00157 <span class="comment">//create buffer to draw in</span>
<a name="l00158"></a>00158 QPixmap <a class="code" href="blur_8cpp.html#fa761c0753ecc94346e155a39bd9ed9c">buffer</a>( size() );
<a name="l00159"></a>00159 buffer.fill( white );
<a name="l00160"></a>00160
<a name="l00161"></a>00161 <span class="comment">//create a painter pointing to the buffer</span>
<a name="l00162"></a>00162 QPainter bufferPainter( &buffer );
<a name="l00163"></a>00163
<a name="l00164"></a>00164 <span class="comment">//turn off clipping to make painting operations faster</span>
<a name="l00165"></a>00165 bufferPainter.setClipping(<span class="keyword">false</span>);
<a name="l00166"></a>00166
<a name="l00167"></a>00167 <span class="comment">//initialize buffer with background brush</span>
<a name="l00168"></a>00168 bufferPainter.fillRect( buffer.rect(), backgroundBrush() );
<a name="l00169"></a>00169
<a name="l00170"></a>00170 <span class="comment">//get handle on histogram data, get max count, set default draw color, and find</span>
<a name="l00171"></a>00171 <span class="comment">//left and right boundaries of current selection </span>
<a name="l00172"></a>00172 QColor color = black;
<a name="l00173"></a>00173 <span class="keywordtype">int</span>* data = <a class="code" href="classHistogramInterface.html#9ba8f2a0167eaf22e8547cc5f417a0c0">grayVals</a>;
<a name="l00174"></a>00174 <span class="keywordtype">int</span> maxCount = <a class="code" href="classHistogramInterface.html#002f958b7305f8d1f55a4c1112306b18">maxGRAYcount</a>;
<a name="l00175"></a>00175
<a name="l00176"></a>00176 <span class="keywordflow">if</span>(<a class="code" href="classHistogramInterface.html#005d412a06b0a721550ad2e6771472ad" title="Currently displayed channel.">displayedChannel</a> == <a class="code" href="histogramInterface_8h.html#435afa8a7ae5dd59e451491c9e221c8cf80f9a890089d211842d59625e561f88">RED</a>) { data = <a class="code" href="classHistogramInterface.html#264a35c05cd4a2a07a788eddc59fb1c9" title="color and luminosity histograms">redVals</a>; color = red; maxCount = <a class="code" href="classHistogramInterface.html#c121590b892cb920b6260d220b84fae7" title="max r,g,b, and gray counts">maxRcount</a>; }
<a name="l00177"></a>00177 <span class="keywordflow">else</span> <span class="keywordflow">if</span>(<a class="code" href="classHistogramInterface.html#005d412a06b0a721550ad2e6771472ad" title="Currently displayed channel.">displayedChannel</a> == <a class="code" href="histogramInterface_8h.html#435afa8a7ae5dd59e451491c9e221c8ca60bd322f93178d68184e30e162571ca">GREEN</a>) { data = <a class="code" href="classHistogramInterface.html#ea8d7c5b0ef52e4830f254733e3c65c8">greenVals</a>; color = green; maxCount = <a class="code" href="classHistogramInterface.html#03b8ff199cfe546459b6894e87eb4bc6">maxGcount</a>; }
<a name="l00178"></a>00178 <span class="keywordflow">else</span> <span class="keywordflow">if</span>(<a class="code" href="classHistogramInterface.html#005d412a06b0a721550ad2e6771472ad" title="Currently displayed channel.">displayedChannel</a> == <a class="code" href="histogramInterface_8h.html#435afa8a7ae5dd59e451491c9e221c8c35d6719cb4d7577c031b3d79057a1b79">BLUE</a>) { data = <a class="code" href="classHistogramInterface.html#dea84cd738a840ded8460c4ad3154414">blueVals</a>; color = blue; maxCount = <a class="code" href="classHistogramInterface.html#8ca76cbbcb85f7a598c249b2c5df70d9">maxBcount</a>; }
<a name="l00179"></a>00179
<a name="l00180"></a>00180 <span class="keywordtype">int</span> indexLeft, indexRight;
<a name="l00181"></a>00181 <a class="code" href="classHistogramInterface.html#b8fcdebab7917f3725ac3a67b1386f68" title="this utility function finds currently selected range">getSelectedRange</a>(indexLeft,indexRight);
<a name="l00182"></a>00182 <span class="keywordtype">int</span> displayLeft = <a class="code" href="classHistogramInterface.html#99a2daa291c70090c5a97c0d5afe81d1" title="converts index in 0-255 ranges to screen coordinate">indexToDisplay</a> ( indexLeft );
<a name="l00183"></a>00183 <span class="keywordtype">int</span> displayRight = <a class="code" href="classHistogramInterface.html#99a2daa291c70090c5a97c0d5afe81d1" title="converts index in 0-255 ranges to screen coordinate">indexToDisplay</a> ( indexRight );
<a name="l00184"></a>00184
<a name="l00185"></a>00185 <span class="keywordtype">int</span> histogramHeight = <a class="code" href="histogramInterface_8cpp.html#915fea918ff9711fb8aad5029f4a7844">HISTOGRAM_HEIGHT</a>;
<a name="l00186"></a>00186
<a name="l00187"></a>00187 <span class="comment">//iterate over each pixel column</span>
<a name="l00188"></a>00188 <span class="keywordtype">int</span> x;
<a name="l00189"></a>00189 <span class="keywordflow">for</span>(x=0; x<<a class="code" href="blur_8cpp.html#2474a5474cbff19523a51eb1de01cda4">width</a>(); x++)
<a name="l00190"></a>00190 {
<a name="l00191"></a>00191 <span class="keywordtype">double</span> index = <a class="code" href="classHistogramInterface.html#84b7e990d4dbbb974daff7ab3e1b9784" title="convert screen coordinate to index in 0-255 range">displayToIndex</a>( x );
<a name="l00192"></a>00192 <span class="keywordtype">int</span> indexL = (int)index;
<a name="l00193"></a>00193 <span class="keywordtype">double</span> scaleR = index - indexL;
<a name="l00194"></a>00194
<a name="l00195"></a>00195 <span class="keywordtype">int</span> h = 0;
<a name="l00196"></a>00196 <span class="keywordflow">if</span>(indexL < 255)
<a name="l00197"></a>00197 {
<a name="l00198"></a>00198 h = (int) ((1-scaleR)*data[indexL] + scaleR*data[indexL+1]);
<a name="l00199"></a>00199 }
<a name="l00200"></a>00200 <span class="keywordflow">else</span>
<a name="l00201"></a>00201 {
<a name="l00202"></a>00202 h = data[255];
<a name="l00203"></a>00203 }
<a name="l00204"></a>00204
<a name="l00205"></a>00205 <span class="comment">//scale count so that the maxCount maps to the maximum height</span>
<a name="l00206"></a>00206 <span class="keywordtype">double</span> scaledH = (histogramHeight*h)/maxCount;
<a name="l00207"></a>00207 h = (int) scaledH;
<a name="l00208"></a>00208 <span class="comment">//round up values between 0 and 1 so show data is there</span>
<a name="l00209"></a>00209 <span class="keywordflow">if</span>( h == 0 && scaledH > h) h++;
<a name="l00210"></a>00210
<a name="l00211"></a>00211 <span class="keywordflow">if</span>(h > 0)
<a name="l00212"></a>00212 {
<a name="l00213"></a>00213 <span class="comment">//use a gray color outside selected range</span>
<a name="l00214"></a>00214 QColor usedColor = color;
<a name="l00215"></a>00215 <span class="keywordflow">if</span>(x < displayLeft || x > displayRight) { usedColor = gray; }
<a name="l00216"></a>00216
<a name="l00217"></a>00217 bufferPainter.fillRect( QRect(x, histogramHeight - h,
<a name="l00218"></a>00218 1, h),
<a name="l00219"></a>00219 QBrush(usedColor) );
<a name="l00220"></a>00220 }
<a name="l00221"></a>00221
<a name="l00222"></a>00222 <span class="comment">//if this is left or right boundary of selection and entire range not selected then</span>
<a name="l00223"></a>00223 <span class="comment">//draw a vertical black line to make it stand out more</span>
<a name="l00224"></a>00224 <span class="keywordflow">if</span>( (x == displayLeft || x == displayLeft+1 ||
<a name="l00225"></a>00225 x == displayRight || x == displayRight-1) )
<a name="l00226"></a>00226 {
<a name="l00227"></a>00227 bufferPainter.drawLine( x, 0, x, histogramHeight-1 );
<a name="l00228"></a>00228 }
<a name="l00229"></a>00229 }
<a name="l00230"></a>00230 <span class="comment">//----</span>
<a name="l00231"></a>00231 <span class="comment">//paint color bar key below</span>
<a name="l00232"></a>00232
<a name="l00233"></a>00233 <span class="comment">//first a black border</span>
<a name="l00234"></a>00234 bufferPainter.fillRect( QRect(0, histogramHeight + <a class="code" href="histogramInterface_8cpp.html#7de3a77a1aace94056e3bbf410a94648">COLOR_BAR_MARGIN</a>,
<a name="l00235"></a>00235 <a class="code" href="blur_8cpp.html#2474a5474cbff19523a51eb1de01cda4">width</a>(), <a class="code" href="histogramInterface_8cpp.html#c048e12ca829cb014d17cd1badcd2e84">COLOR_BAR_HEIGHT</a>+2*<a class="code" href="histogramInterface_8cpp.html#7fe30b41da5cfd303bd5b87305aae9c5">COLOR_BAR_BORDER</a>),
<a name="l00236"></a>00236 QBrush(black) );
<a name="l00237"></a>00237
<a name="l00238"></a>00238 <span class="comment">//next the color gradient</span>
<a name="l00239"></a>00239 QColor scaledColor;
<a name="l00240"></a>00240 <span class="keywordflow">for</span>(x=<a class="code" href="histogramInterface_8cpp.html#7fe30b41da5cfd303bd5b87305aae9c5">COLOR_BAR_BORDER</a>; x < <a class="code" href="blur_8cpp.html#2474a5474cbff19523a51eb1de01cda4">width</a>()-<a class="code" href="histogramInterface_8cpp.html#7fe30b41da5cfd303bd5b87305aae9c5">COLOR_BAR_BORDER</a>; x++)
<a name="l00241"></a>00241 {
<a name="l00242"></a>00242 <span class="keywordtype">int</span> index;
<a name="l00243"></a>00243 <span class="keywordflow">if</span>(x <= displayLeft )
<a name="l00244"></a>00244 index = 0;
<a name="l00245"></a>00245 <span class="keywordflow">else</span> <span class="keywordflow">if</span>(x >= displayRight)
<a name="l00246"></a>00246 index = 255;
<a name="l00247"></a>00247 <span class="keywordflow">else</span>
<a name="l00248"></a>00248 index = (int) (255.0*(x-displayLeft))/(displayRight - displayLeft);
<a name="l00249"></a>00249
<a name="l00250"></a>00250 <span class="keywordtype">int</span> r = color.red();
<a name="l00251"></a>00251 <span class="keywordtype">int</span> g = color.green();
<a name="l00252"></a>00252 <span class="keywordtype">int</span> <a class="code" href="jpegInternal_8h.html#f320905358fa78701e4cc60b6135601f">b</a> = color.blue();
<a name="l00253"></a>00253
<a name="l00254"></a>00254 <span class="keywordflow">if</span>( r != 0) r = index;
<a name="l00255"></a>00255 <span class="keywordflow">if</span>( g != 0) g = index;
<a name="l00256"></a>00256 <span class="keywordflow">if</span>( b != 0) b = index;
<a name="l00257"></a>00257
<a name="l00258"></a>00258 <span class="comment">//black color was used when adjusting luminance, scale to white instead (since black is 0)</span>
<a name="l00259"></a>00259 <span class="keywordflow">if</span>( color == black )
<a name="l00260"></a>00260 { r = g = b = index; }
<a name="l00261"></a>00261
<a name="l00262"></a>00262 scaledColor.setRgb( r,g,b );
<a name="l00263"></a>00263 bufferPainter.fillRect( QRect(x, histogramHeight + <a class="code" href="histogramInterface_8cpp.html#7de3a77a1aace94056e3bbf410a94648">COLOR_BAR_MARGIN</a> + COLOR_BAR_BORDER,
<a name="l00264"></a>00264 1, <a class="code" href="histogramInterface_8cpp.html#c048e12ca829cb014d17cd1badcd2e84">COLOR_BAR_HEIGHT</a>),
<a name="l00265"></a>00265 QBrush(scaledColor) );
<a name="l00266"></a>00266 }
<a name="l00267"></a>00267
<a name="l00268"></a>00268 <span class="comment">//end painter </span>
<a name="l00269"></a>00269 bufferPainter.end();
<a name="l00270"></a>00270
<a name="l00271"></a>00271 <span class="comment">//blit buffer to screen</span>
<a name="l00272"></a>00272 bitBlt( <span class="keyword">this</span>,
<a name="l00273"></a>00273 e->rect().x(), e->rect().y(),
<a name="l00274"></a>00274 &buffer,
<a name="l00275"></a>00275 e->rect().x(), e->rect().y(),
<a name="l00276"></a>00276 e->rect().width(), e->rect().height() );
<a name="l00277"></a>00277 }
<a name="l00278"></a>00278 <span class="comment">//==============================================</span>
<a name="l00279"></a><a class="code" href="classHistogramInterface.html#84ee87d1cc494c965375266d24adfd85">00279</a> <span class="keywordtype">void</span> <a class="code" href="classHistogramInterface.html#84ee87d1cc494c965375266d24adfd85" title="Sets currently displayed channel.">HistogramInterface::setDisplayChannel</a>( <a class="code" href="histogramInterface_8h.html#435afa8a7ae5dd59e451491c9e221c8c" title="chanel histogram displays">DISPLAYED_CHANNEL</a> channel )
<a name="l00280"></a>00280 {
<a name="l00281"></a>00281 <span class="comment">//set mode and repaint</span>
<a name="l00282"></a>00282 <a class="code" href="classHistogramInterface.html#005d412a06b0a721550ad2e6771472ad" title="Currently displayed channel.">displayedChannel</a> = channel;
<a name="l00283"></a>00283 repaint(<span class="keyword">false</span>);
<a name="l00284"></a>00284 }
<a name="l00285"></a>00285 <span class="comment">//==============================================</span>
<a name="l00286"></a><a class="code" href="classHistogramInterface.html#0b98858f3eaa3c3070f6780d4b940804">00286</a> QSize <a class="code" href="classHistogramInterface.html#0b98858f3eaa3c3070f6780d4b940804">HistogramInterface::minimumSizeHint</a>()<span class="keyword"> const</span>
<a name="l00287"></a>00287 <span class="keyword"></span>{
<a name="l00288"></a>00288 <span class="keywordflow">return</span> QSize( 256,100 + <a class="code" href="histogramInterface_8cpp.html#7de3a77a1aace94056e3bbf410a94648">COLOR_BAR_MARGIN</a> + 2*<a class="code" href="histogramInterface_8cpp.html#7fe30b41da5cfd303bd5b87305aae9c5">COLOR_BAR_BORDER</a> + <a class="code" href="histogramInterface_8cpp.html#c048e12ca829cb014d17cd1badcd2e84">COLOR_BAR_HEIGHT</a> );
<a name="l00289"></a>00289 }
<a name="l00290"></a>00290 <span class="comment">//==============================================</span>
<a name="l00291"></a><a class="code" href="classHistogramInterface.html#3de7a7717a5dcec4a5f30804a93ac42c">00291</a> <span class="keywordtype">bool</span> <a class="code" href="classHistogramInterface.html#3de7a7717a5dcec4a5f30804a93ac42c" title="determines if mouse is near boundary">HistogramInterface::nearBoundary</a>( QPoint p )
<a name="l00292"></a>00292 {
<a name="l00293"></a>00293 <span class="comment">//compute index from mouse position</span>
<a name="l00294"></a>00294 <span class="keywordtype">int</span> index = (int) <a class="code" href="classHistogramInterface.html#84b7e990d4dbbb974daff7ab3e1b9784" title="convert screen coordinate to index in 0-255 range">displayToIndex</a>( p.x() );
<a name="l00295"></a>00295
<a name="l00296"></a>00296 <span class="comment">//get left and right to check for clicks near current boundaries</span>
<a name="l00297"></a>00297 <span class="keywordtype">int</span> left, right;
<a name="l00298"></a>00298 <a class="code" href="classHistogramInterface.html#b8fcdebab7917f3725ac3a67b1386f68" title="this utility function finds currently selected range">getSelectedRange</a>( left, right );
<a name="l00299"></a>00299
<a name="l00300"></a>00300 <span class="comment">//check if within threshold of left or right boundaries</span>
<a name="l00301"></a>00301 <span class="keywordflow">return</span> ( (index < left + 1 + <a class="code" href="histogramInterface_8cpp.html#dbab52be17168e6914dd8ab79ce5fcd2">DRAG_THRESHOLD</a> &&
<a name="l00302"></a>00302 index > left - <a class="code" href="histogramInterface_8cpp.html#dbab52be17168e6914dd8ab79ce5fcd2">DRAG_THRESHOLD</a>) ||
<a name="l00303"></a>00303 (index < right + <a class="code" href="histogramInterface_8cpp.html#dbab52be17168e6914dd8ab79ce5fcd2">DRAG_THRESHOLD</a> &&
<a name="l00304"></a>00304 index > right - 1 - <a class="code" href="histogramInterface_8cpp.html#dbab52be17168e6914dd8ab79ce5fcd2">DRAG_THRESHOLD</a>) );
<a name="l00305"></a>00305 }
<a name="l00306"></a>00306 <span class="comment">//==============================================</span>
<a name="l00307"></a><a class="code" href="classHistogramInterface.html#0aefec0585b0ec72bc61a05b507852a7">00307</a> <span class="keywordtype">void</span> <a class="code" href="classHistogramInterface.html#0aefec0585b0ec72bc61a05b507852a7">HistogramInterface::mousePressEvent</a>( QMouseEvent *e)
<a name="l00308"></a>00308 {
<a name="l00309"></a>00309 <span class="comment">//begin drag mode!</span>
<a name="l00310"></a>00310 <a class="code" href="classHistogramInterface.html#7c74c0c3c02444b6ff4b3b5c9608514a" title="effect of mouse drags">dragMode</a> = <a class="code" href="histogramInterface_8h.html#4d26b3730bd5b62a87de6a6b062cc88a52e3d57e4410a3f781e113a401378c42">DRAG</a>;
<a name="l00311"></a>00311
<a name="l00312"></a>00312 <span class="comment">//compute index from mouse position</span>
<a name="l00313"></a>00313 <span class="keywordtype">int</span> index = (int) <a class="code" href="classHistogramInterface.html#84b7e990d4dbbb974daff7ab3e1b9784" title="convert screen coordinate to index in 0-255 range">displayToIndex</a>( e->pos().x() );
<a name="l00314"></a>00314
<a name="l00315"></a>00315 <span class="comment">//get left and right to check for clicks near current boundaries</span>
<a name="l00316"></a>00316 <span class="keywordtype">int</span> left, right;
<a name="l00317"></a>00317 <a class="code" href="classHistogramInterface.html#b8fcdebab7917f3725ac3a67b1386f68" title="this utility function finds currently selected range">getSelectedRange</a>( left, right );
<a name="l00318"></a>00318
<a name="l00319"></a>00319 <span class="comment">//get click and drag handles</span>
<a name="l00320"></a>00320 <span class="keywordtype">int</span> *click, *drag;
<a name="l00321"></a>00321 <span class="keywordflow">if</span>(<a class="code" href="classHistogramInterface.html#005d412a06b0a721550ad2e6771472ad" title="Currently displayed channel.">displayedChannel</a> == <a class="code" href="histogramInterface_8h.html#435afa8a7ae5dd59e451491c9e221c8c5541521f58ed91756b07fbc0df85137b">LUMINOSITY</a>)
<a name="l00322"></a>00322 {
<a name="l00323"></a>00323 click = &<a class="code" href="classHistogramInterface.html#f3fc052e8ec7735210cbe0fe94b7c248" title="left and right bounds for each channel">lumClick</a>; drag = &<a class="code" href="classHistogramInterface.html#23ba1cfd72013e546982553419763aac">lumDrag</a>;
<a name="l00324"></a>00324 }
<a name="l00325"></a>00325 <span class="keywordflow">else</span> <span class="keywordflow">if</span>(<a class="code" href="classHistogramInterface.html#005d412a06b0a721550ad2e6771472ad" title="Currently displayed channel.">displayedChannel</a> == <a class="code" href="histogramInterface_8h.html#435afa8a7ae5dd59e451491c9e221c8cf80f9a890089d211842d59625e561f88">RED</a>)
<a name="l00326"></a>00326 {
<a name="l00327"></a>00327 click = &<a class="code" href="classHistogramInterface.html#bb0fff71ccb28404c55975e441880fbd">redClick</a>; drag = &<a class="code" href="classHistogramInterface.html#9926622cab9d0479639fe0b3ea48dece">redDrag</a>;
<a name="l00328"></a>00328 }
<a name="l00329"></a>00329 <span class="keywordflow">else</span> <span class="keywordflow">if</span>(<a class="code" href="classHistogramInterface.html#005d412a06b0a721550ad2e6771472ad" title="Currently displayed channel.">displayedChannel</a> == <a class="code" href="histogramInterface_8h.html#435afa8a7ae5dd59e451491c9e221c8ca60bd322f93178d68184e30e162571ca">GREEN</a>)
<a name="l00330"></a>00330 {
<a name="l00331"></a>00331 click = &<a class="code" href="classHistogramInterface.html#64b0c0b295c4c3c8ccfb0ddf64e06350">greenClick</a>; drag = &<a class="code" href="classHistogramInterface.html#58a584d1a02a5fd39540bd513a1c9ef4">greenDrag</a>;
<a name="l00332"></a>00332 }
<a name="l00333"></a>00333 <span class="keywordflow">else</span>
<a name="l00334"></a>00334 {
<a name="l00335"></a>00335 click = &<a class="code" href="classHistogramInterface.html#75e62e75624002bbfa0618d5568ba5a2">blueClick</a>; drag = &<a class="code" href="classHistogramInterface.html#ab53e01ee86860b86d0fad0ecd8a2a00">blueDrag</a>;
<a name="l00336"></a>00336 }
<a name="l00337"></a>00337
<a name="l00338"></a>00338 <span class="comment">//if within threshold of left then start dragging that side</span>
<a name="l00339"></a>00339 <span class="keywordflow">if</span>( index < left + <a class="code" href="histogramInterface_8cpp.html#dbab52be17168e6914dd8ab79ce5fcd2">DRAG_THRESHOLD</a> &&
<a name="l00340"></a>00340 index > left - <a class="code" href="histogramInterface_8cpp.html#dbab52be17168e6914dd8ab79ce5fcd2">DRAG_THRESHOLD</a> )
<a name="l00341"></a>00341 {
<a name="l00342"></a>00342 *click = right;
<a name="l00343"></a>00343 *drag = left;
<a name="l00344"></a>00344 <span class="keywordflow">return</span>;
<a name="l00345"></a>00345 }
<a name="l00346"></a>00346 <span class="comment">//if within threshold of left then start dragging that side</span>
<a name="l00347"></a>00347 <span class="keywordflow">if</span>( index < right + <a class="code" href="histogramInterface_8cpp.html#dbab52be17168e6914dd8ab79ce5fcd2">DRAG_THRESHOLD</a> &&
<a name="l00348"></a>00348 index > right - <a class="code" href="histogramInterface_8cpp.html#dbab52be17168e6914dd8ab79ce5fcd2">DRAG_THRESHOLD</a> )
<a name="l00349"></a>00349 {
<a name="l00350"></a>00350 *click = left;
<a name="l00351"></a>00351 *drag = right;
<a name="l00352"></a>00352 <span class="keywordflow">return</span>;
<a name="l00353"></a>00353 }
<a name="l00354"></a>00354 <span class="comment">//else begin new drag</span>
<a name="l00355"></a>00355 <span class="keywordflow">else</span>
<a name="l00356"></a>00356 {
<a name="l00357"></a>00357 *click = index;
<a name="l00358"></a>00358 *drag = index;
<a name="l00359"></a>00359 repaint(<span class="keyword">false</span>);
<a name="l00360"></a>00360
<a name="l00361"></a>00361 <span class="comment">//emit selectection changed signal</span>
<a name="l00362"></a>00362 <span class="keywordtype">int</span> left, right;
<a name="l00363"></a>00363 <a class="code" href="classHistogramInterface.html#b8fcdebab7917f3725ac3a67b1386f68" title="this utility function finds currently selected range">getSelectedRange</a>( left, right );
<a name="l00364"></a>00364 emit <a class="code" href="classHistogramInterface.html#1440b03a986614e68d1656e7be9458ef">selectedRangeChanged</a>();
<a name="l00365"></a>00365 }
<a name="l00366"></a>00366 }
<a name="l00367"></a>00367 <span class="comment">//==============================================</span>
<a name="l00368"></a><a class="code" href="classHistogramInterface.html#767286c2880017f9c6d5569ab645d2e4">00368</a> <span class="keywordtype">void</span> <a class="code" href="classHistogramInterface.html#767286c2880017f9c6d5569ab645d2e4">HistogramInterface::mouseMoveEvent</a>( QMouseEvent *e)
<a name="l00369"></a>00369 {
<a name="l00370"></a>00370 <span class="comment">//if not dragging a selection then update mouse cursor as appropriate</span>
<a name="l00371"></a>00371 <span class="keywordflow">if</span>(<a class="code" href="classHistogramInterface.html#7c74c0c3c02444b6ff4b3b5c9608514a" title="effect of mouse drags">dragMode</a> == <a class="code" href="histogramInterface_8h.html#4d26b3730bd5b62a87de6a6b062cc88a548126d587d43d3630c45cd091e095f7">NO_EFFECT</a>)
<a name="l00372"></a>00372 {
<a name="l00373"></a>00373 <span class="keywordflow">if</span>( <a class="code" href="classHistogramInterface.html#3de7a7717a5dcec4a5f30804a93ac42c" title="determines if mouse is near boundary">nearBoundary</a>(e->pos()) && <a class="code" href="classHistogramInterface.html#8e91960530b360d49fbe0a94a0090f88" title="current mouse shape.">currentMouseShape</a> == <a class="code" href="histogramInterface_8h.html#4d26b3730bd5b62a87de6a6b062cc88a548126d587d43d3630c45cd091e095f7">NO_EFFECT</a> )
<a name="l00374"></a>00374 {
<a name="l00375"></a>00375 <a class="code" href="classHistogramInterface.html#8e91960530b360d49fbe0a94a0090f88" title="current mouse shape.">currentMouseShape</a> = <a class="code" href="histogramInterface_8h.html#4d26b3730bd5b62a87de6a6b062cc88a52e3d57e4410a3f781e113a401378c42">DRAG</a>;
<a name="l00376"></a>00376 setCursor( <a class="code" href="cursors_8cpp.html#8d89fd03db7e35090175ec42e8af8f3f">getCursor</a>(<a class="code" href="cursors_8h.html#384a874a43b4618a4c20506728f1c6478b659aefdfad1b15a9e9dcbd7c524f25">MOVE_HOR_CURSOR</a>) );
<a name="l00377"></a>00377 }
<a name="l00378"></a>00378 <span class="keywordflow">else</span> <span class="keywordflow">if</span>( !<a class="code" href="classHistogramInterface.html#3de7a7717a5dcec4a5f30804a93ac42c" title="determines if mouse is near boundary">nearBoundary</a>(e->pos()) && <a class="code" href="classHistogramInterface.html#8e91960530b360d49fbe0a94a0090f88" title="current mouse shape.">currentMouseShape</a> == <a class="code" href="histogramInterface_8h.html#4d26b3730bd5b62a87de6a6b062cc88a52e3d57e4410a3f781e113a401378c42">DRAG</a> )
<a name="l00379"></a>00379 {
<a name="l00380"></a>00380 <a class="code" href="classHistogramInterface.html#8e91960530b360d49fbe0a94a0090f88" title="current mouse shape.">currentMouseShape</a> = <a class="code" href="histogramInterface_8h.html#4d26b3730bd5b62a87de6a6b062cc88a548126d587d43d3630c45cd091e095f7">NO_EFFECT</a>;
<a name="l00381"></a>00381 setCursor( <a class="code" href="cursors_8cpp.html#8d89fd03db7e35090175ec42e8af8f3f">getCursor</a>(<a class="code" href="cursors_8h.html#384a874a43b4618a4c20506728f1c647c7f7eb79f43d18a0d6f51be79e78f012">CROSS_CURSOR</a>) );
<a name="l00382"></a>00382 }
<a name="l00383"></a>00383
<a name="l00384"></a>00384 <span class="keywordflow">return</span>;
<a name="l00385"></a>00385 }
<a name="l00386"></a>00386
<a name="l00387"></a>00387 <span class="comment">//compute index in 0-255 range from mouse coordinates</span>
<a name="l00388"></a>00388 <span class="keywordtype">int</span> x = QMAX( QMIN( e->pos().x(), <a class="code" href="blur_8cpp.html#2474a5474cbff19523a51eb1de01cda4">width</a>()-1 ), 0 );
<a name="l00389"></a>00389 <span class="keywordtype">int</span> index = (int) <a class="code" href="classHistogramInterface.html#84b7e990d4dbbb974daff7ab3e1b9784" title="convert screen coordinate to index in 0-255 range">displayToIndex</a>( x );
<a name="l00390"></a>00390
<a name="l00391"></a>00391 <span class="comment">//reset boundary</span>
<a name="l00392"></a>00392 <span class="keywordflow">if</span>(<a class="code" href="classHistogramInterface.html#005d412a06b0a721550ad2e6771472ad" title="Currently displayed channel.">displayedChannel</a> == <a class="code" href="histogramInterface_8h.html#435afa8a7ae5dd59e451491c9e221c8c5541521f58ed91756b07fbc0df85137b">LUMINOSITY</a>) { <a class="code" href="classHistogramInterface.html#23ba1cfd72013e546982553419763aac">lumDrag</a> = index; }
<a name="l00393"></a>00393 <span class="keywordflow">else</span> <span class="keywordflow">if</span>(<a class="code" href="classHistogramInterface.html#005d412a06b0a721550ad2e6771472ad" title="Currently displayed channel.">displayedChannel</a> == <a class="code" href="histogramInterface_8h.html#435afa8a7ae5dd59e451491c9e221c8cf80f9a890089d211842d59625e561f88">RED</a>) { <a class="code" href="classHistogramInterface.html#9926622cab9d0479639fe0b3ea48dece">redDrag</a> = index; }
<a name="l00394"></a>00394 <span class="keywordflow">else</span> <span class="keywordflow">if</span>(<a class="code" href="classHistogramInterface.html#005d412a06b0a721550ad2e6771472ad" title="Currently displayed channel.">displayedChannel</a> == <a class="code" href="histogramInterface_8h.html#435afa8a7ae5dd59e451491c9e221c8ca60bd322f93178d68184e30e162571ca">GREEN</a>) { <a class="code" href="classHistogramInterface.html#58a584d1a02a5fd39540bd513a1c9ef4">greenDrag</a> = index; }
<a name="l00395"></a>00395 <span class="keywordflow">else</span> <span class="keywordflow">if</span>(<a class="code" href="classHistogramInterface.html#005d412a06b0a721550ad2e6771472ad" title="Currently displayed channel.">displayedChannel</a> == <a class="code" href="histogramInterface_8h.html#435afa8a7ae5dd59e451491c9e221c8c35d6719cb4d7577c031b3d79057a1b79">BLUE</a>) { <a class="code" href="classHistogramInterface.html#ab53e01ee86860b86d0fad0ecd8a2a00">blueDrag</a> = index; }
<a name="l00396"></a>00396
<a name="l00397"></a>00397 <span class="comment">//repaint</span>
<a name="l00398"></a>00398 repaint(<span class="keyword">false</span>);
<a name="l00399"></a>00399
<a name="l00400"></a>00400 <span class="comment">//emit selectection changed signal</span>
<a name="l00401"></a>00401 <span class="keywordtype">int</span> left, right;
<a name="l00402"></a>00402 <a class="code" href="classHistogramInterface.html#b8fcdebab7917f3725ac3a67b1386f68" title="this utility function finds currently selected range">getSelectedRange</a>( left, right );
<a name="l00403"></a>00403 emit <a class="code" href="classHistogramInterface.html#1440b03a986614e68d1656e7be9458ef">selectedRangeChanged</a>();
<a name="l00404"></a>00404 }
<a name="l00405"></a>00405 <span class="comment">//==============================================</span>
<a name="l00406"></a><a class="code" href="classHistogramInterface.html#b22bac6176967caa35e8abbbf16835ae">00406</a> <span class="keywordtype">void</span> <a class="code" href="classHistogramInterface.html#b22bac6176967caa35e8abbbf16835ae">HistogramInterface::mouseReleaseEvent</a>( QMouseEvent *e)
<a name="l00407"></a>00407 {
<a name="l00408"></a>00408 <span class="comment">//set mouse drags to no longer have any effect on boundary</span>
<a name="l00409"></a>00409 <a class="code" href="classHistogramInterface.html#7c74c0c3c02444b6ff4b3b5c9608514a" title="effect of mouse drags">dragMode</a> = <a class="code" href="histogramInterface_8h.html#4d26b3730bd5b62a87de6a6b062cc88a548126d587d43d3630c45cd091e095f7">NO_EFFECT</a>;
<a name="l00410"></a>00410
<a name="l00411"></a>00411 <span class="comment">//update mouse cursor if necessary</span>
<a name="l00412"></a>00412 <span class="keywordflow">if</span>( !<a class="code" href="classHistogramInterface.html#3de7a7717a5dcec4a5f30804a93ac42c" title="determines if mouse is near boundary">nearBoundary</a>(e->pos()) && <a class="code" href="classHistogramInterface.html#8e91960530b360d49fbe0a94a0090f88" title="current mouse shape.">currentMouseShape</a> == <a class="code" href="histogramInterface_8h.html#4d26b3730bd5b62a87de6a6b062cc88a52e3d57e4410a3f781e113a401378c42">DRAG</a> )
<a name="l00413"></a>00413 {
<a name="l00414"></a>00414 <a class="code" href="classHistogramInterface.html#8e91960530b360d49fbe0a94a0090f88" title="current mouse shape.">currentMouseShape</a> = <a class="code" href="histogramInterface_8h.html#4d26b3730bd5b62a87de6a6b062cc88a548126d587d43d3630c45cd091e095f7">NO_EFFECT</a>;
<a name="l00415"></a>00415 setCursor( <a class="code" href="cursors_8cpp.html#8d89fd03db7e35090175ec42e8af8f3f">getCursor</a>(<a class="code" href="cursors_8h.html#384a874a43b4618a4c20506728f1c647c7f7eb79f43d18a0d6f51be79e78f012">CROSS_CURSOR</a>) );
<a name="l00416"></a>00416 }
<a name="l00417"></a>00417 }
<a name="l00418"></a>00418 <span class="comment">//==============================================</span>
<a name="l00419"></a><a class="code" href="classHistogramInterface.html#d0d7771f807788e772d3fa44b9d071c3">00419</a> <span class="keywordtype">void</span> <a class="code" href="classHistogramInterface.html#d0d7771f807788e772d3fa44b9d071c3">HistogramInterface::selectAll</a>()
<a name="l00420"></a>00420 {
<a name="l00421"></a>00421 <span class="comment">//reset boundary</span>
<a name="l00422"></a>00422 <span class="keywordflow">if</span>(<a class="code" href="classHistogramInterface.html#005d412a06b0a721550ad2e6771472ad" title="Currently displayed channel.">displayedChannel</a> == <a class="code" href="histogramInterface_8h.html#435afa8a7ae5dd59e451491c9e221c8c5541521f58ed91756b07fbc0df85137b">LUMINOSITY</a>) { <a class="code" href="classHistogramInterface.html#f3fc052e8ec7735210cbe0fe94b7c248" title="left and right bounds for each channel">lumClick</a> = 0, <a class="code" href="classHistogramInterface.html#23ba1cfd72013e546982553419763aac">lumDrag</a> = 255; }
<a name="l00423"></a>00423 <span class="keywordflow">else</span> <span class="keywordflow">if</span>(<a class="code" href="classHistogramInterface.html#005d412a06b0a721550ad2e6771472ad" title="Currently displayed channel.">displayedChannel</a> == <a class="code" href="histogramInterface_8h.html#435afa8a7ae5dd59e451491c9e221c8cf80f9a890089d211842d59625e561f88">RED</a>) { <a class="code" href="classHistogramInterface.html#bb0fff71ccb28404c55975e441880fbd">redClick</a> = 0; <a class="code" href="classHistogramInterface.html#9926622cab9d0479639fe0b3ea48dece">redDrag</a> = 255; }
<a name="l00424"></a>00424 <span class="keywordflow">else</span> <span class="keywordflow">if</span>(<a class="code" href="classHistogramInterface.html#005d412a06b0a721550ad2e6771472ad" title="Currently displayed channel.">displayedChannel</a> == <a class="code" href="histogramInterface_8h.html#435afa8a7ae5dd59e451491c9e221c8ca60bd322f93178d68184e30e162571ca">GREEN</a>) { <a class="code" href="classHistogramInterface.html#64b0c0b295c4c3c8ccfb0ddf64e06350">greenClick</a> = 0; <a class="code" href="classHistogramInterface.html#58a584d1a02a5fd39540bd513a1c9ef4">greenDrag</a> = 255; }
<a name="l00425"></a>00425 <span class="keywordflow">else</span> <span class="keywordflow">if</span>(<a class="code" href="classHistogramInterface.html#005d412a06b0a721550ad2e6771472ad" title="Currently displayed channel.">displayedChannel</a> == <a class="code" href="histogramInterface_8h.html#435afa8a7ae5dd59e451491c9e221c8c35d6719cb4d7577c031b3d79057a1b79">BLUE</a>) { <a class="code" href="classHistogramInterface.html#75e62e75624002bbfa0618d5568ba5a2">blueClick</a> = 0; <a class="code" href="classHistogramInterface.html#ab53e01ee86860b86d0fad0ecd8a2a00">blueDrag</a> = 255; }
<a name="l00426"></a>00426 repaint(<span class="keyword">false</span>);
<a name="l00427"></a>00427
<a name="l00428"></a>00428 <span class="comment">//emit selectection changed signal</span>
<a name="l00429"></a>00429 <span class="keywordtype">int</span> left, right;
<a name="l00430"></a>00430 <a class="code" href="classHistogramInterface.html#b8fcdebab7917f3725ac3a67b1386f68" title="this utility function finds currently selected range">getSelectedRange</a>( left, right );
<a name="l00431"></a>00431 emit <a class="code" href="classHistogramInterface.html#1440b03a986614e68d1656e7be9458ef">selectedRangeChanged</a>();
<a name="l00432"></a>00432 }
<a name="l00433"></a>00433 <span class="comment">//==============================================</span>
<a name="l00434"></a><a class="code" href="classHistogramInterface.html#ce352a748cf063b12cd22d54f1460680">00434</a> <span class="keywordtype">void</span> <a class="code" href="classHistogramInterface.html#ce352a748cf063b12cd22d54f1460680" title="returns histogram boundaries">HistogramInterface::getHistBoundaries</a>(<span class="keywordtype">int</span> &lumLeft, <span class="keywordtype">int</span> &lumRight,
<a name="l00435"></a>00435 <span class="keywordtype">int</span> &redLeft, <span class="keywordtype">int</span> &redRight,
<a name="l00436"></a>00436 <span class="keywordtype">int</span> &greenLeft, <span class="keywordtype">int</span> &greenRight,
<a name="l00437"></a>00437 <span class="keywordtype">int</span> &blueLeft, <span class="keywordtype">int</span> &blueRight)
<a name="l00438"></a>00438 {
<a name="l00439"></a>00439 lumLeft = QMIN( <a class="code" href="classHistogramInterface.html#f3fc052e8ec7735210cbe0fe94b7c248" title="left and right bounds for each channel">lumClick</a>, <a class="code" href="classHistogramInterface.html#23ba1cfd72013e546982553419763aac">lumDrag</a> );
<a name="l00440"></a>00440 lumRight = QMAX( <a class="code" href="classHistogramInterface.html#f3fc052e8ec7735210cbe0fe94b7c248" title="left and right bounds for each channel">lumClick</a>, <a class="code" href="classHistogramInterface.html#23ba1cfd72013e546982553419763aac">lumDrag</a> );
<a name="l00441"></a>00441
<a name="l00442"></a>00442 redLeft = QMIN( <a class="code" href="classHistogramInterface.html#bb0fff71ccb28404c55975e441880fbd">redClick</a>, <a class="code" href="classHistogramInterface.html#9926622cab9d0479639fe0b3ea48dece">redDrag</a> );
<a name="l00443"></a>00443 redRight = QMAX( <a class="code" href="classHistogramInterface.html#bb0fff71ccb28404c55975e441880fbd">redClick</a>, <a class="code" href="classHistogramInterface.html#9926622cab9d0479639fe0b3ea48dece">redDrag</a> );
<a name="l00444"></a>00444
<a name="l00445"></a>00445 greenLeft = QMIN( <a class="code" href="classHistogramInterface.html#64b0c0b295c4c3c8ccfb0ddf64e06350">greenClick</a>, <a class="code" href="classHistogramInterface.html#58a584d1a02a5fd39540bd513a1c9ef4">greenDrag</a> );
<a name="l00446"></a>00446 greenRight = QMAX( <a class="code" href="classHistogramInterface.html#64b0c0b295c4c3c8ccfb0ddf64e06350">greenClick</a>, <a class="code" href="classHistogramInterface.html#58a584d1a02a5fd39540bd513a1c9ef4">greenDrag</a> );
<a name="l00447"></a>00447
<a name="l00448"></a>00448 blueLeft = QMIN( <a class="code" href="classHistogramInterface.html#75e62e75624002bbfa0618d5568ba5a2">blueClick</a>, <a class="code" href="classHistogramInterface.html#ab53e01ee86860b86d0fad0ecd8a2a00">blueDrag</a> );
<a name="l00449"></a>00449 blueRight = QMAX( <a class="code" href="classHistogramInterface.html#75e62e75624002bbfa0618d5568ba5a2">blueClick</a>, <a class="code" href="classHistogramInterface.html#ab53e01ee86860b86d0fad0ecd8a2a00">blueDrag</a> );
<a name="l00450"></a>00450 }
<a name="l00451"></a>00451 <span class="comment">//==============================================</span>
<a name="l00452"></a><a class="code" href="classHistogramInterface.html#a50e91749fffe828524ae0248f66b4d5">00452</a> <span class="keywordtype">void</span> <a class="code" href="classHistogramInterface.html#a50e91749fffe828524ae0248f66b4d5" title="resets all boundaries">HistogramInterface::resetBoundaries</a>()
<a name="l00453"></a>00453 {
<a name="l00454"></a>00454 <a class="code" href="classHistogramInterface.html#f3fc052e8ec7735210cbe0fe94b7c248" title="left and right bounds for each channel">lumClick</a> = <a class="code" href="classHistogramInterface.html#bb0fff71ccb28404c55975e441880fbd">redClick</a> = <a class="code" href="classHistogramInterface.html#64b0c0b295c4c3c8ccfb0ddf64e06350">greenClick</a> = <a class="code" href="classHistogramInterface.html#75e62e75624002bbfa0618d5568ba5a2">blueClick</a> = 0;
<a name="l00455"></a>00455 <a class="code" href="classHistogramInterface.html#23ba1cfd72013e546982553419763aac">lumDrag</a> = <a class="code" href="classHistogramInterface.html#9926622cab9d0479639fe0b3ea48dece">redDrag</a> = <a class="code" href="classHistogramInterface.html#58a584d1a02a5fd39540bd513a1c9ef4">greenDrag</a> = <a class="code" href="classHistogramInterface.html#ab53e01ee86860b86d0fad0ecd8a2a00">blueDrag</a> = 255;
<a name="l00456"></a>00456 repaint(<span class="keyword">false</span>);
<a name="l00457"></a>00457 emit <a class="code" href="classHistogramInterface.html#1440b03a986614e68d1656e7be9458ef">selectedRangeChanged</a>();
<a name="l00458"></a>00458 }
<a name="l00459"></a>00459 <span class="comment">//==============================================</span>
<a name="l00460"></a>00460
<a name="l00461"></a>00461
<a name="l00462"></a>00462
<a name="l00463"></a>00463
</pre></div></div>
<hr size="1"><address style="text-align: right;"><small>Generated on Sun Aug 23 02:34:25 2009 for AlbumShaper by
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