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<h1>selectionPlacementInterface.cpp</h1><a href="selectionPlacementInterface_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 <qcursor.h></span>
<a name="l00015"></a>00015
<a name="l00016"></a>00016 <span class="comment">//Projectwide includes</span>
<a name="l00017"></a>00017 <span class="preprocessor">#include "<a class="code" href="selectionPlacementInterface_8h.html">selectionPlacementInterface.h</a>"</span>
<a name="l00018"></a>00018 <span class="preprocessor">#include "../../backend/tools/imageTools.h"</span>
<a name="l00019"></a>00019 <span class="preprocessor">#include "../cursors.h"</span>
<a name="l00020"></a>00020
<a name="l00021"></a>00021 <span class="comment">//==============================================</span>
<a name="l00022"></a><a class="code" href="classSelectionPlacementInterface.html#dd203016605cac46857a8f341beff67a">00022</a> <a class="code" href="classSelectionPlacementInterface.html#dd203016605cac46857a8f341beff67a" title="Creates layout.">SelectionPlacementInterface::SelectionPlacementInterface</a>( QString imageFilename,
<a name="l00023"></a>00023 <a class="code" href="classQWidget.html">QWidget</a> *parent, <span class="keyword">const</span> <span class="keywordtype">char</span>* name )
<a name="l00024"></a>00024 : <a class="code" href="classQWidget.html">QWidget</a> (parent, name )
<a name="l00025"></a>00025 {
<a name="l00026"></a>00026 <span class="comment">//store original image dimensions</span>
<a name="l00027"></a>00027 <a class="code" href="imageTools_8cpp.html#2af7f0a9c4f931ad3213c36796e95288" title="Get image dimensions.">getImageSize</a>( imageFilename, <a class="code" href="classSelectionPlacementInterface.html#b365a415a03f4300ee0fa7a4c67a143c" title="original image dimensions">origImageSize</a> );
<a name="l00028"></a>00028
<a name="l00029"></a>00029 <span class="comment">//construct scaled image</span>
<a name="l00030"></a>00030 <a class="code" href="imageTools_8cpp.html#126e11984fb8124e78e3b1b68a24870c" title="Scale image and save copy to disk.">scaleImage</a>( imageFilename, <a class="code" href="classSelectionPlacementInterface.html#d33be07cf77a533429daa950b6a1f7a1" title="Scaled image used for display purposes.">scaledImage</a>, 200, 200 );
<a name="l00031"></a>00031
<a name="l00032"></a>00032 <span class="comment">//construct an unselected scaled image</span>
<a name="l00033"></a>00033 <a class="code" href="classSelectionPlacementInterface.html#29d6371c917ec8ca66fb3f45de4cb2ba" title="Unselected scaled image (desaturated version of scaled image).">unselectedScaledImage</a> = <a class="code" href="classSelectionPlacementInterface.html#d33be07cf77a533429daa950b6a1f7a1" title="Scaled image used for display purposes.">scaledImage</a>.copy();
<a name="l00034"></a>00034 <span class="keywordtype">int</span> x, y;
<a name="l00035"></a>00035 QRgb* rgb;
<a name="l00036"></a>00036 uchar* scanLine;
<a name="l00037"></a>00037 <span class="keywordflow">for</span>( y=0; y<<a class="code" href="classSelectionPlacementInterface.html#29d6371c917ec8ca66fb3f45de4cb2ba" title="Unselected scaled image (desaturated version of scaled image).">unselectedScaledImage</a>.height(); y++)
<a name="l00038"></a>00038 {
<a name="l00039"></a>00039 <span class="comment">//iterate over each selected pixel in scanline</span>
<a name="l00040"></a>00040 scanLine = <a class="code" href="classSelectionPlacementInterface.html#29d6371c917ec8ca66fb3f45de4cb2ba" title="Unselected scaled image (desaturated version of scaled image).">unselectedScaledImage</a>.scanLine(y);
<a name="l00041"></a>00041 <span class="keywordflow">for</span>( x=0; x<<a class="code" href="classSelectionPlacementInterface.html#29d6371c917ec8ca66fb3f45de4cb2ba" title="Unselected scaled image (desaturated version of scaled image).">unselectedScaledImage</a>.width(); x++)
<a name="l00042"></a>00042 {
<a name="l00043"></a>00043 <span class="comment">//compress dynamic range to 25% of original</span>
<a name="l00044"></a>00044 rgb = ((QRgb*)scanLine+x);
<a name="l00045"></a>00045
<a name="l00046"></a>00046 <span class="keywordtype">double</span> r = ((double)qRed(*rgb) )/255.0;
<a name="l00047"></a>00047 <span class="keywordtype">double</span> g = ((double)qGreen(*rgb) )/255.0;
<a name="l00048"></a>00048 <span class="keywordtype">double</span> <a class="code" href="jpegInternal_8h.html#f320905358fa78701e4cc60b6135601f">b</a> = ((double)qBlue(*rgb) )/255.0;
<a name="l00049"></a>00049
<a name="l00050"></a>00050 <span class="comment">//convert to hsv</span>
<a name="l00051"></a>00051 <span class="keywordtype">double</span> h,s,v;
<a name="l00052"></a>00052 <a class="code" href="imageTools_8cpp.html#7769c25727d6caedf20321d238b3828d" title="Convert a RGB color triplet to HSV.">RGBtoHSV</a>(r,g,b,&h,&s,&v);
<a name="l00053"></a>00053
<a name="l00054"></a>00054 <span class="comment">//scale and clamp v</span>
<a name="l00055"></a>00055 v*=0.25;
<a name="l00056"></a>00056
<a name="l00057"></a>00057 <span class="comment">//convert adjusted color back to rgb colorspace and clamp</span>
<a name="l00058"></a>00058 <a class="code" href="imageTools_8cpp.html#a4ea508b635b1a7648bb5834132d4681" title="Convert a HSV color triplet to RGB.">HSVtoRGB</a>( &r,&g,&b, h,s,v);
<a name="l00059"></a>00059 <span class="keywordtype">int</span> rp = (int) QMIN( QMAX((r*255), 0), 255 );
<a name="l00060"></a>00060 <span class="keywordtype">int</span> gp = (int) QMIN( QMAX((g*255), 0), 255 );
<a name="l00061"></a>00061 <span class="keywordtype">int</span> bp = (int) QMIN( QMAX((b*255), 0), 255 );
<a name="l00062"></a>00062
<a name="l00063"></a>00063 <span class="comment">//set adjusted color value</span>
<a name="l00064"></a>00064 *rgb = qRgb(rp,gp,bp);
<a name="l00065"></a>00065 }
<a name="l00066"></a>00066 }
<a name="l00067"></a>00067
<a name="l00068"></a>00068 <span class="comment">//watch mouse movements in order to drag selection</span>
<a name="l00069"></a>00069 <span class="comment">//watch mouse movements in order to move split point between adjusted and original image</span>
<a name="l00070"></a>00070 setMouseTracking(<span class="keyword">true</span>);
<a name="l00071"></a>00071
<a name="l00072"></a>00072 <span class="comment">//by default no in dragging mode</span>
<a name="l00073"></a>00073 <a class="code" href="classSelectionPlacementInterface.html#001d6380211ba469b7e3255491bf1a60" title="dragging the mouse only moves the selection if the mouse button is pressed first...">currentlyDragging</a> = <span class="keyword">false</span>;
<a name="l00074"></a>00074 <a class="code" href="classSelectionPlacementInterface.html#a2cb8adcbf93d1299430045444c624c2" title="current mouse shape.">currentMouseShapeIsDrag</a> = <span class="keyword">false</span>;
<a name="l00075"></a>00075
<a name="l00076"></a>00076 <span class="comment">//accept focus when clicked on</span>
<a name="l00077"></a>00077 setFocusPolicy( QWidget::ClickFocus );
<a name="l00078"></a>00078
<a name="l00079"></a>00079 <span class="comment">//init selection area</span>
<a name="l00080"></a>00080 <a class="code" href="classSelectionPlacementInterface.html#f18984dab577a7b0357da741e880a857" title="selection">selection</a>.setTopLeft( QPoint( -1, -1 ) );
<a name="l00081"></a>00081 <a class="code" href="classSelectionPlacementInterface.html#f18984dab577a7b0357da741e880a857" title="selection">selection</a>.setBottomRight( QPoint( -1, -1 ) );
<a name="l00082"></a>00082 }
<a name="l00083"></a>00083 <span class="comment">//==============================================</span>
<a name="l00084"></a><a class="code" href="classSelectionPlacementInterface.html#3dd71dd7e7a54d22987c1d966872d3ec">00084</a> <a class="code" href="classSelectionPlacementInterface.html#3dd71dd7e7a54d22987c1d966872d3ec" title="Deletes objects.">SelectionPlacementInterface::~SelectionPlacementInterface</a>() { }
<a name="l00085"></a>00085 <span class="comment">//==============================================</span>
<a name="l00086"></a><a class="code" href="classSelectionPlacementInterface.html#b2b2a111aa81f4906ad06a89d5a5a778">00086</a> <span class="keywordtype">void</span> <a class="code" href="classSelectionPlacementInterface.html#b2b2a111aa81f4906ad06a89d5a5a778">SelectionPlacementInterface::paintEvent</a>(QPaintEvent *e)
<a name="l00087"></a>00087 {
<a name="l00088"></a>00088 <span class="comment">//if no scaled image just return</span>
<a name="l00089"></a>00089 <span class="keywordflow">if</span>(<a class="code" href="classSelectionPlacementInterface.html#d33be07cf77a533429daa950b6a1f7a1" title="Scaled image used for display purposes.">scaledImage</a>.isNull()) { <span class="keywordflow">return</span>; }
<a name="l00090"></a>00090
<a name="l00091"></a>00091 <span class="comment">//create buffer to draw in</span>
<a name="l00092"></a>00092 QPixmap <a class="code" href="blur_8cpp.html#fa761c0753ecc94346e155a39bd9ed9c">buffer</a>( size() );
<a name="l00093"></a>00093
<a name="l00094"></a>00094 <span class="comment">//create a painter pointing to the buffer</span>
<a name="l00095"></a>00095 QPainter bufferPainter( &buffer );
<a name="l00096"></a>00096
<a name="l00097"></a>00097 <span class="comment">//turn off clipping to make painting operations faster</span>
<a name="l00098"></a>00098 bufferPainter.setClipping(<span class="keyword">false</span>);
<a name="l00099"></a>00099
<a name="l00100"></a>00100 <span class="comment">//initialize buffer with background brush</span>
<a name="l00101"></a>00101 bufferPainter.fillRect( buffer.rect(), backgroundBrush() );
<a name="l00102"></a>00102
<a name="l00103"></a>00103 <span class="keywordtype">int</span> xOffset = (<a class="code" href="blur_8cpp.html#2474a5474cbff19523a51eb1de01cda4">width</a>() - <a class="code" href="classSelectionPlacementInterface.html#d33be07cf77a533429daa950b6a1f7a1" title="Scaled image used for display purposes.">scaledImage</a>.width()) / 2;
<a name="l00104"></a>00104 <span class="keywordtype">int</span> yOffset = (<a class="code" href="blur_8cpp.html#d12fc34ce789bce6c8a05d8a17138534">height</a>() - <a class="code" href="classSelectionPlacementInterface.html#d33be07cf77a533429daa950b6a1f7a1" title="Scaled image used for display purposes.">scaledImage</a>.height()) / 2;
<a name="l00105"></a>00105
<a name="l00106"></a>00106 <span class="comment">//selection not set yet, simply paint the scaled image normally</span>
<a name="l00107"></a>00107 <span class="keywordflow">if</span>(<a class="code" href="classSelectionPlacementInterface.html#f18984dab577a7b0357da741e880a857" title="selection">selection</a>.width() == 0 || <a class="code" href="classSelectionPlacementInterface.html#f18984dab577a7b0357da741e880a857" title="selection">selection</a>.height() == 0 )
<a name="l00108"></a>00108 {
<a name="l00109"></a>00109 bufferPainter.drawImage( QPoint(xOffset, yOffset), <a class="code" href="classSelectionPlacementInterface.html#d33be07cf77a533429daa950b6a1f7a1" title="Scaled image used for display purposes.">scaledImage</a> );
<a name="l00110"></a>00110 }
<a name="l00111"></a>00111 <span class="comment">//selection present...</span>
<a name="l00112"></a>00112 <span class="keywordflow">else</span>
<a name="l00113"></a>00113 {
<a name="l00114"></a>00114 <span class="comment">//first paint using unselected coloring</span>
<a name="l00115"></a>00115 bufferPainter.drawImage( QPoint(xOffset, yOffset), <a class="code" href="classSelectionPlacementInterface.html#29d6371c917ec8ca66fb3f45de4cb2ba" title="Unselected scaled image (desaturated version of scaled image).">unselectedScaledImage</a> );
<a name="l00116"></a>00116
<a name="l00117"></a>00117 <span class="comment">//convert selection coordinates to display space</span>
<a name="l00118"></a>00118 QRect displayRect = <a class="code" href="classSelectionPlacementInterface.html#6b537be16ed8beace1f18bff8298ff23" title="convert rectangle from image coordinates to display coordinates">imageToDisplay</a>( <a class="code" href="classSelectionPlacementInterface.html#f18984dab577a7b0357da741e880a857" title="selection">selection</a> );
<a name="l00119"></a>00119 QPoint <a class="code" href="redEye__internal_8h.html#6a9aebec61b1a6732045c187a6156f4f">topLeft</a> = displayRect.topLeft() + QPoint( xOffset, yOffset );
<a name="l00120"></a>00120 QPoint <a class="code" href="redEye__internal_8h.html#75e80edb449bc9a0925be60719132bd0">bottomRight</a> = displayRect.bottomRight() + QPoint( xOffset, yOffset );
<a name="l00121"></a>00121
<a name="l00122"></a>00122 <span class="comment">//now paint selected region in color</span>
<a name="l00123"></a>00123 bufferPainter.drawImage( topLeft.x(), topLeft.y(),
<a name="l00124"></a>00124 <a class="code" href="classSelectionPlacementInterface.html#d33be07cf77a533429daa950b6a1f7a1" title="Scaled image used for display purposes.">scaledImage</a>,
<a name="l00125"></a>00125 displayRect.left(), displayRect.top(),
<a name="l00126"></a>00126 displayRect.width(), displayRect.height() );
<a name="l00127"></a>00127
<a name="l00128"></a>00128
<a name="l00129"></a>00129 <span class="comment">//paint thin line around selected region to help it stand out even more</span>
<a name="l00130"></a>00130 <span class="keywordflow">if</span>( <a class="code" href="classSelectionPlacementInterface.html#f18984dab577a7b0357da741e880a857" title="selection">selection</a>.width() < <a class="code" href="classSelectionPlacementInterface.html#b365a415a03f4300ee0fa7a4c67a143c" title="original image dimensions">origImageSize</a>.width() ||
<a name="l00131"></a>00131 <a class="code" href="classSelectionPlacementInterface.html#f18984dab577a7b0357da741e880a857" title="selection">selection</a>.height() < <a class="code" href="classSelectionPlacementInterface.html#b365a415a03f4300ee0fa7a4c67a143c" title="original image dimensions">origImageSize</a>.height() )
<a name="l00132"></a>00132 {
<a name="l00133"></a>00133 QPen pen;
<a name="l00134"></a>00134 pen.setColor( gray );
<a name="l00135"></a>00135 pen.setStyle( Qt::SolidLine );
<a name="l00136"></a>00136 pen.setWidth( 2 );
<a name="l00137"></a>00137 bufferPainter.setPen( pen);
<a name="l00138"></a>00138
<a name="l00139"></a>00139 QRect selctRect( topLeft, bottomRight );
<a name="l00140"></a>00140 bufferPainter.drawRect(selctRect);
<a name="l00141"></a>00141 }
<a name="l00142"></a>00142 }
<a name="l00143"></a>00143
<a name="l00144"></a>00144 <span class="comment">//end painter </span>
<a name="l00145"></a>00145 bufferPainter.end();
<a name="l00146"></a>00146
<a name="l00147"></a>00147 <span class="comment">//blit buffer to screen</span>
<a name="l00148"></a>00148 bitBlt( <span class="keyword">this</span>,
<a name="l00149"></a>00149 e->rect().x(), e->rect().y(),
<a name="l00150"></a>00150 &buffer,
<a name="l00151"></a>00151 e->rect().x(), e->rect().y(),
<a name="l00152"></a>00152 e->rect().width(), e->rect().height() );
<a name="l00153"></a>00153 }
<a name="l00154"></a>00154 <span class="comment">//==============================================</span>
<a name="l00155"></a><a class="code" href="classSelectionPlacementInterface.html#849dd7f85c84de7fc7f238c21c384186">00155</a> QSize <a class="code" href="classSelectionPlacementInterface.html#849dd7f85c84de7fc7f238c21c384186">SelectionPlacementInterface::sizeHint</a>()<span class="keyword"> const</span>
<a name="l00156"></a>00156 <span class="keyword"></span>{ <span class="keywordflow">return</span> <a class="code" href="classSelectionPlacementInterface.html#e3f1b29e015d6b33b88e86d2537ce7b7">minimumSizeHint</a>(); }
<a name="l00157"></a>00157 <span class="comment">//==============================================</span>
<a name="l00158"></a><a class="code" href="classSelectionPlacementInterface.html#e3f1b29e015d6b33b88e86d2537ce7b7">00158</a> QSize <a class="code" href="classSelectionPlacementInterface.html#e3f1b29e015d6b33b88e86d2537ce7b7">SelectionPlacementInterface::minimumSizeHint</a>()<span class="keyword"> const</span>
<a name="l00159"></a>00159 <span class="keyword"></span>{ <span class="keywordflow">return</span> <a class="code" href="classSelectionPlacementInterface.html#d33be07cf77a533429daa950b6a1f7a1" title="Scaled image used for display purposes.">scaledImage</a>.size(); }
<a name="l00160"></a>00160 <span class="comment">//============================================== </span>
<a name="l00161"></a><a class="code" href="classSelectionPlacementInterface.html#6754ab2e0713bcbfe7033f92bf1b50a3">00161</a> <span class="keywordtype">bool</span> <a class="code" href="classSelectionPlacementInterface.html#6754ab2e0713bcbfe7033f92bf1b50a3" title="util function used to determine if mouse is over selected region">SelectionPlacementInterface::overRegion</a>( QPoint p )
<a name="l00162"></a>00162 {
<a name="l00163"></a>00163 <span class="keywordflow">if</span>( <a class="code" href="classSelectionPlacementInterface.html#f18984dab577a7b0357da741e880a857" title="selection">selection</a>.width() == 0 || <a class="code" href="classSelectionPlacementInterface.html#f18984dab577a7b0357da741e880a857" title="selection">selection</a>.height() == 0 )
<a name="l00164"></a>00164 { <span class="keywordflow">return</span> <span class="keyword">false</span>; }
<a name="l00165"></a>00165
<a name="l00166"></a>00166 QRect displayRect = <a class="code" href="classSelectionPlacementInterface.html#6b537be16ed8beace1f18bff8298ff23" title="convert rectangle from image coordinates to display coordinates">imageToDisplay</a>( <a class="code" href="classSelectionPlacementInterface.html#f18984dab577a7b0357da741e880a857" title="selection">selection</a> );
<a name="l00167"></a>00167
<a name="l00168"></a>00168 <span class="comment">//if the entire image is visible then no rectangle can be dragged so just</span>
<a name="l00169"></a>00169 <span class="comment">//return false so a drag cursor never becomes visible since it might</span>
<a name="l00170"></a>00170 <span class="comment">//confuse the user into thinking s/he could actually drag it</span>
<a name="l00171"></a>00171 <span class="keywordflow">if</span>( displayRect.width() == <a class="code" href="classSelectionPlacementInterface.html#d33be07cf77a533429daa950b6a1f7a1" title="Scaled image used for display purposes.">scaledImage</a>.width() &&
<a name="l00172"></a>00172 displayRect.height() == <a class="code" href="classSelectionPlacementInterface.html#d33be07cf77a533429daa950b6a1f7a1" title="Scaled image used for display purposes.">scaledImage</a>.height() )
<a name="l00173"></a>00173 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00174"></a>00174
<a name="l00175"></a>00175 <span class="comment">//determine if mouse cursor is over region</span>
<a name="l00176"></a>00176 <span class="keywordtype">int</span> xOffset = (<a class="code" href="blur_8cpp.html#2474a5474cbff19523a51eb1de01cda4">width</a>() - <a class="code" href="classSelectionPlacementInterface.html#d33be07cf77a533429daa950b6a1f7a1" title="Scaled image used for display purposes.">scaledImage</a>.width() ) / 2;
<a name="l00177"></a>00177 <span class="keywordtype">int</span> yOffset = (<a class="code" href="blur_8cpp.html#d12fc34ce789bce6c8a05d8a17138534">height</a>() - <a class="code" href="classSelectionPlacementInterface.html#d33be07cf77a533429daa950b6a1f7a1" title="Scaled image used for display purposes.">scaledImage</a>.height()) / 2;
<a name="l00178"></a>00178
<a name="l00179"></a>00179 <span class="keywordflow">return</span> ( p.x() >= xOffset + displayRect.left() &&
<a name="l00180"></a>00180 p.x() <= xOffset + displayRect.right() &&
<a name="l00181"></a>00181 p.y() >= yOffset + displayRect.top() &&
<a name="l00182"></a>00182 p.y() <= yOffset + displayRect.bottom() );
<a name="l00183"></a>00183 }
<a name="l00184"></a>00184 <span class="comment">//==============================================</span>
<a name="l00185"></a><a class="code" href="classSelectionPlacementInterface.html#2434061757fb2a383145bf233e26c4a5">00185</a> <span class="keywordtype">void</span> <a class="code" href="classSelectionPlacementInterface.html#2434061757fb2a383145bf233e26c4a5" title="util function used to center selection about mouse location">SelectionPlacementInterface::recenterSelection</a>(QPoint mousePosition)
<a name="l00186"></a>00186 {
<a name="l00187"></a>00187 <span class="comment">//compute new viewing center</span>
<a name="l00188"></a>00188 QPoint center = QPoint( ((<a class="code" href="classSelectionPlacementInterface.html#b365a415a03f4300ee0fa7a4c67a143c" title="original image dimensions">origImageSize</a>.width()-1) * mousePosition.x()) / (<a class="code" href="blur_8cpp.html#2474a5474cbff19523a51eb1de01cda4">width</a>()-1),
<a name="l00189"></a>00189 ((<a class="code" href="classSelectionPlacementInterface.html#b365a415a03f4300ee0fa7a4c67a143c" title="original image dimensions">origImageSize</a>.height()-1) * mousePosition.y()) / (<a class="code" href="blur_8cpp.html#d12fc34ce789bce6c8a05d8a17138534">height</a>()-1) );
<a name="l00190"></a>00190 <span class="comment">//move selection</span>
<a name="l00191"></a>00191 <span class="keywordtype">int</span> sW = <a class="code" href="classSelectionPlacementInterface.html#f18984dab577a7b0357da741e880a857" title="selection">selection</a>.width();
<a name="l00192"></a>00192 <span class="keywordtype">int</span> sH = <a class="code" href="classSelectionPlacementInterface.html#f18984dab577a7b0357da741e880a857" title="selection">selection</a>.height();
<a name="l00193"></a>00193 <a class="code" href="classSelectionPlacementInterface.html#f18984dab577a7b0357da741e880a857" title="selection">selection</a>.setLeft( center.x() - sW/2 );
<a name="l00194"></a>00194 <a class="code" href="classSelectionPlacementInterface.html#f18984dab577a7b0357da741e880a857" title="selection">selection</a>.setTop( center.y() - sH/2 );
<a name="l00195"></a>00195 <a class="code" href="classSelectionPlacementInterface.html#f18984dab577a7b0357da741e880a857" title="selection">selection</a>.setRight( <a class="code" href="classSelectionPlacementInterface.html#f18984dab577a7b0357da741e880a857" title="selection">selection</a>.left() + sW -1 );
<a name="l00196"></a>00196 <a class="code" href="classSelectionPlacementInterface.html#f18984dab577a7b0357da741e880a857" title="selection">selection</a>.setBottom( <a class="code" href="classSelectionPlacementInterface.html#f18984dab577a7b0357da741e880a857" title="selection">selection</a>.top() + sH -1 );
<a name="l00197"></a>00197
<a name="l00198"></a>00198 <span class="comment">//ensure selection window never goes out of bounds</span>
<a name="l00199"></a>00199 <span class="keywordflow">if</span>(<a class="code" href="classSelectionPlacementInterface.html#f18984dab577a7b0357da741e880a857" title="selection">selection</a>.left() < 0 )
<a name="l00200"></a>00200 <a class="code" href="classSelectionPlacementInterface.html#f18984dab577a7b0357da741e880a857" title="selection">selection</a>.moveBy( -<a class="code" href="classSelectionPlacementInterface.html#f18984dab577a7b0357da741e880a857" title="selection">selection</a>.left(), 0 );
<a name="l00201"></a>00201
<a name="l00202"></a>00202 <span class="keywordflow">if</span>(<a class="code" href="classSelectionPlacementInterface.html#f18984dab577a7b0357da741e880a857" title="selection">selection</a>.right() > <a class="code" href="classSelectionPlacementInterface.html#b365a415a03f4300ee0fa7a4c67a143c" title="original image dimensions">origImageSize</a>.width() - 1 )
<a name="l00203"></a>00203 <a class="code" href="classSelectionPlacementInterface.html#f18984dab577a7b0357da741e880a857" title="selection">selection</a>.moveBy( (<a class="code" href="classSelectionPlacementInterface.html#b365a415a03f4300ee0fa7a4c67a143c" title="original image dimensions">origImageSize</a>.width() - 1) - <a class="code" href="classSelectionPlacementInterface.html#f18984dab577a7b0357da741e880a857" title="selection">selection</a>.right(), 0 );
<a name="l00204"></a>00204
<a name="l00205"></a>00205 <span class="keywordflow">if</span>(<a class="code" href="classSelectionPlacementInterface.html#f18984dab577a7b0357da741e880a857" title="selection">selection</a>.top() < 0 )
<a name="l00206"></a>00206 <a class="code" href="classSelectionPlacementInterface.html#f18984dab577a7b0357da741e880a857" title="selection">selection</a>.moveBy( 0, -<a class="code" href="classSelectionPlacementInterface.html#f18984dab577a7b0357da741e880a857" title="selection">selection</a>.top() );
<a name="l00207"></a>00207
<a name="l00208"></a>00208 <span class="keywordflow">if</span>(<a class="code" href="classSelectionPlacementInterface.html#f18984dab577a7b0357da741e880a857" title="selection">selection</a>.bottom() > <a class="code" href="classSelectionPlacementInterface.html#b365a415a03f4300ee0fa7a4c67a143c" title="original image dimensions">origImageSize</a>.height() - 1 )
<a name="l00209"></a>00209 <a class="code" href="classSelectionPlacementInterface.html#f18984dab577a7b0357da741e880a857" title="selection">selection</a>.moveBy( 0, (<a class="code" href="classSelectionPlacementInterface.html#b365a415a03f4300ee0fa7a4c67a143c" title="original image dimensions">origImageSize</a>.height() - 1) - <a class="code" href="classSelectionPlacementInterface.html#f18984dab577a7b0357da741e880a857" title="selection">selection</a>.bottom() );
<a name="l00210"></a>00210
<a name="l00211"></a>00211 <span class="comment">//repaint and emit placement changed signal</span>
<a name="l00212"></a>00212 repaint(<span class="keyword">false</span>);
<a name="l00213"></a>00213 emit <a class="code" href="classSelectionPlacementInterface.html#f57125814cf627385b460d5f44ae68cc">placementChanged</a>( <a class="code" href="classSelectionPlacementInterface.html#f18984dab577a7b0357da741e880a857" title="selection">selection</a> );
<a name="l00214"></a>00214 }
<a name="l00215"></a>00215 <span class="comment">//==============================================</span>
<a name="l00216"></a><a class="code" href="classSelectionPlacementInterface.html#87d4dc117f86e06623807da2d369cc76">00216</a> <span class="keywordtype">void</span> <a class="code" href="classSelectionPlacementInterface.html#87d4dc117f86e06623807da2d369cc76">SelectionPlacementInterface::mousePressEvent</a>( QMouseEvent *e)
<a name="l00217"></a>00217 {
<a name="l00218"></a>00218 <span class="comment">//if mouse press is not over the region then center viewed area over mouse press</span>
<a name="l00219"></a>00219 <span class="keywordflow">if</span>( !<a class="code" href="classSelectionPlacementInterface.html#a2cb8adcbf93d1299430045444c624c2" title="current mouse shape.">currentMouseShapeIsDrag</a> )
<a name="l00220"></a>00220 {
<a name="l00221"></a>00221 <a class="code" href="classSelectionPlacementInterface.html#2434061757fb2a383145bf233e26c4a5" title="util function used to center selection about mouse location">recenterSelection</a>(e->pos());
<a name="l00222"></a>00222 <a class="code" href="classSelectionPlacementInterface.html#a2cb8adcbf93d1299430045444c624c2" title="current mouse shape.">currentMouseShapeIsDrag</a> = <span class="keyword">true</span>;
<a name="l00223"></a>00223 setCursor( <a class="code" href="cursors_8cpp.html#8d89fd03db7e35090175ec42e8af8f3f">getCursor</a>(<a class="code" href="cursors_8h.html#384a874a43b4618a4c20506728f1c647d9da03696a38d1604e9c434702bd04c6">MOVE_SELECTION_CURSOR</a>) );
<a name="l00224"></a>00224 }
<a name="l00225"></a>00225
<a name="l00226"></a>00226 <span class="comment">//enter dragging mode</span>
<a name="l00227"></a>00227 <a class="code" href="classSelectionPlacementInterface.html#001d6380211ba469b7e3255491bf1a60" title="dragging the mouse only moves the selection if the mouse button is pressed first...">currentlyDragging</a> = <span class="keyword">true</span>;
<a name="l00228"></a>00228 }
<a name="l00229"></a>00229 <span class="comment">//==============================================</span>
<a name="l00230"></a><a class="code" href="classSelectionPlacementInterface.html#2ef0a91e4248e9410b5de0dc95bdc83b">00230</a> <span class="keywordtype">void</span> <a class="code" href="classSelectionPlacementInterface.html#2ef0a91e4248e9410b5de0dc95bdc83b">SelectionPlacementInterface::mouseMoveEvent</a>( QMouseEvent *e)
<a name="l00231"></a>00231 {
<a name="l00232"></a>00232 <span class="comment">//if not dragging update mosue cursor</span>
<a name="l00233"></a>00233 <span class="keywordflow">if</span>(!<a class="code" href="classSelectionPlacementInterface.html#001d6380211ba469b7e3255491bf1a60" title="dragging the mouse only moves the selection if the mouse button is pressed first...">currentlyDragging</a>)
<a name="l00234"></a>00234 {
<a name="l00235"></a>00235 <span class="keywordflow">if</span>( !<a class="code" href="classSelectionPlacementInterface.html#6754ab2e0713bcbfe7033f92bf1b50a3" title="util function used to determine if mouse is over selected region">overRegion</a>(e->pos() ) && <a class="code" href="classSelectionPlacementInterface.html#a2cb8adcbf93d1299430045444c624c2" title="current mouse shape.">currentMouseShapeIsDrag</a> )
<a name="l00236"></a>00236 {
<a name="l00237"></a>00237 <a class="code" href="classSelectionPlacementInterface.html#a2cb8adcbf93d1299430045444c624c2" title="current mouse shape.">currentMouseShapeIsDrag</a> = <span class="keyword">false</span>;
<a name="l00238"></a>00238 setCursor( Qt::ArrowCursor );
<a name="l00239"></a>00239 }
<a name="l00240"></a>00240 <span class="keywordflow">else</span> <span class="keywordflow">if</span>( <a class="code" href="classSelectionPlacementInterface.html#6754ab2e0713bcbfe7033f92bf1b50a3" title="util function used to determine if mouse is over selected region">overRegion</a>(e->pos() ) && !<a class="code" href="classSelectionPlacementInterface.html#a2cb8adcbf93d1299430045444c624c2" title="current mouse shape.">currentMouseShapeIsDrag</a> )
<a name="l00241"></a>00241 {
<a name="l00242"></a>00242 <a class="code" href="classSelectionPlacementInterface.html#a2cb8adcbf93d1299430045444c624c2" title="current mouse shape.">currentMouseShapeIsDrag</a> = <span class="keyword">true</span>;
<a name="l00243"></a>00243 setCursor( <a class="code" href="cursors_8cpp.html#8d89fd03db7e35090175ec42e8af8f3f">getCursor</a>(<a class="code" href="cursors_8h.html#384a874a43b4618a4c20506728f1c647d9da03696a38d1604e9c434702bd04c6">MOVE_SELECTION_CURSOR</a>) );
<a name="l00244"></a>00244
<a name="l00245"></a>00245 }
<a name="l00246"></a>00246 }
<a name="l00247"></a>00247 <span class="comment">//move selection</span>
<a name="l00248"></a>00248 <span class="keywordflow">else</span> { <a class="code" href="classSelectionPlacementInterface.html#2434061757fb2a383145bf233e26c4a5" title="util function used to center selection about mouse location">recenterSelection</a>(e->pos()); }
<a name="l00249"></a>00249 }
<a name="l00250"></a>00250 <span class="comment">//==============================================</span>
<a name="l00251"></a><a class="code" href="classSelectionPlacementInterface.html#555162bb2afad65c1e07f4b903072400">00251</a> <span class="keywordtype">void</span> <a class="code" href="classSelectionPlacementInterface.html#555162bb2afad65c1e07f4b903072400">SelectionPlacementInterface::mouseReleaseEvent</a>( QMouseEvent *)
<a name="l00252"></a>00252 {
<a name="l00253"></a>00253 <span class="comment">//disable dragging</span>
<a name="l00254"></a>00254 <a class="code" href="classSelectionPlacementInterface.html#001d6380211ba469b7e3255491bf1a60" title="dragging the mouse only moves the selection if the mouse button is pressed first...">currentlyDragging</a> = <span class="keyword">false</span>;
<a name="l00255"></a>00255 }
<a name="l00256"></a>00256 <span class="comment">//==============================================</span>
<a name="l00257"></a><a class="code" href="classSelectionPlacementInterface.html#6b537be16ed8beace1f18bff8298ff23">00257</a> QRect <a class="code" href="classSelectionPlacementInterface.html#6b537be16ed8beace1f18bff8298ff23" title="convert rectangle from image coordinates to display coordinates">SelectionPlacementInterface::imageToDisplay</a>( QRect r )
<a name="l00258"></a>00258 {
<a name="l00259"></a>00259 <span class="comment">//set top left</span>
<a name="l00260"></a>00260 QRect res;
<a name="l00261"></a>00261 res.setTopLeft(QPoint( (<span class="keywordtype">int</span>) (0.5+ (1.0*<a class="code" href="classSelectionPlacementInterface.html#d33be07cf77a533429daa950b6a1f7a1" title="Scaled image used for display purposes.">scaledImage</a>.width()*r.left()) / <a class="code" href="classSelectionPlacementInterface.html#b365a415a03f4300ee0fa7a4c67a143c" title="original image dimensions">origImageSize</a>.width()),
<a name="l00262"></a>00262 (<span class="keywordtype">int</span>) (0.5+ (1.0*<a class="code" href="classSelectionPlacementInterface.html#d33be07cf77a533429daa950b6a1f7a1" title="Scaled image used for display purposes.">scaledImage</a>.height()*r.top()) / <a class="code" href="classSelectionPlacementInterface.html#b365a415a03f4300ee0fa7a4c67a143c" title="original image dimensions">origImageSize</a>.height()) ));
<a name="l00263"></a>00263
<a name="l00264"></a>00264 <span class="comment">//set width/height</span>
<a name="l00265"></a>00265 res.setWidth( (<a class="code" href="classSelectionPlacementInterface.html#d33be07cf77a533429daa950b6a1f7a1" title="Scaled image used for display purposes.">scaledImage</a>.width() *r.width()) / <a class="code" href="classSelectionPlacementInterface.html#b365a415a03f4300ee0fa7a4c67a143c" title="original image dimensions">origImageSize</a>.width() );
<a name="l00266"></a>00266 res.setHeight( (<a class="code" href="classSelectionPlacementInterface.html#d33be07cf77a533429daa950b6a1f7a1" title="Scaled image used for display purposes.">scaledImage</a>.height() *r.height()) / <a class="code" href="classSelectionPlacementInterface.html#b365a415a03f4300ee0fa7a4c67a143c" title="original image dimensions">origImageSize</a>.height() );
<a name="l00267"></a>00267
<a name="l00268"></a>00268 <span class="comment">//if against the right hand size make sure scaled display coordiantes are also</span>
<a name="l00269"></a>00269 <span class="comment">//against edge. rounding prevents this from occuring and is noticeable since selection</span>
<a name="l00270"></a>00270 <span class="comment">//rectangle appears to never be at every edge.</span>
<a name="l00271"></a>00271 <span class="keywordflow">if</span>( r.right() == <a class="code" href="classSelectionPlacementInterface.html#b365a415a03f4300ee0fa7a4c67a143c" title="original image dimensions">origImageSize</a>.width() - 1)
<a name="l00272"></a>00272 { res.moveBy( (<a class="code" href="classSelectionPlacementInterface.html#d33be07cf77a533429daa950b6a1f7a1" title="Scaled image used for display purposes.">scaledImage</a>.width()-1) - res.right(), 0 ); }
<a name="l00273"></a>00273
<a name="l00274"></a>00274 <span class="keywordflow">if</span>( r.bottom() == <a class="code" href="classSelectionPlacementInterface.html#b365a415a03f4300ee0fa7a4c67a143c" title="original image dimensions">origImageSize</a>.height() - 1)
<a name="l00275"></a>00275 { res.moveBy( 0, (<a class="code" href="classSelectionPlacementInterface.html#d33be07cf77a533429daa950b6a1f7a1" title="Scaled image used for display purposes.">scaledImage</a>.height()-1) - res.bottom() ); }
<a name="l00276"></a>00276
<a name="l00277"></a>00277 <span class="comment">//return new rect</span>
<a name="l00278"></a>00278 <span class="keywordflow">return</span> res;
<a name="l00279"></a>00279 }
<a name="l00280"></a>00280 <span class="comment">//==============================================</span>
<a name="l00281"></a><a class="code" href="classSelectionPlacementInterface.html#56666189d8fdea0ee0d7c39612597e6d">00281</a> QRect <a class="code" href="classSelectionPlacementInterface.html#56666189d8fdea0ee0d7c39612597e6d" title="Returns the selected region in image space.">SelectionPlacementInterface::getSelectedRegion</a>()
<a name="l00282"></a>00282 {
<a name="l00283"></a>00283 <span class="keywordflow">return</span> <a class="code" href="classSelectionPlacementInterface.html#f18984dab577a7b0357da741e880a857" title="selection">selection</a>;
<a name="l00284"></a>00284 }
<a name="l00285"></a>00285 <span class="comment">//==============================================</span>
<a name="l00286"></a><a class="code" href="classSelectionPlacementInterface.html#f099a62a94a034e3ba1b11357d96a92c">00286</a> <span class="keywordtype">void</span> <a class="code" href="classSelectionPlacementInterface.html#f099a62a94a034e3ba1b11357d96a92c" title="Set the select region using image space coordinates.">SelectionPlacementInterface::setSelectedRegion</a>( QRect selection )
<a name="l00287"></a>00287 {
<a name="l00288"></a>00288 this->selection = selection;
<a name="l00289"></a>00289 repaint(<span class="keyword">false</span>);
<a name="l00290"></a>00290 }
<a name="l00291"></a>00291 <span class="comment">//==============================================</span>
</pre></div></div>
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