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00012 #include <qlayout.h>
00013 #include <qlabel.h>
00014 #include <qcombobox.h>
00015 #include <qpushbutton.h>
00016 #include <qframe.h>
00017 #include <qslider.h>
00018 #include <qtooltip.h>
00019 #include <qsizegrip.h>
00020
00021
00022 #include "histogramEditor.h"
00023 #include "scaledPreviewInterface.h"
00024 #include "histogramInterface.h"
00025 #include "../clickableLabel.h"
00026 #include "../dynamicSlider.h"
00027 #include "../../config.h"
00028 #include "../../backend/tools/imageTools.h"
00029
00030 #define SLIDER_RADIUS 40
00031
00032
00033 HistogramEditor::HistogramEditor( QString fileName, QWidget *parent, const char* name ) : QDialog(parent,name,true)
00034 {
00035
00036
00037 histogramInterface = NULL;
00038
00039
00040 this->fileName = fileName;
00041
00042
00043
00044 meanR = 0;
00045 meanG = 0;
00046 meanB = 0;
00047 int x, y;
00048 QRgb* rgb;
00049 uchar* scanLine;
00050 QImage image = QImage( fileName );
00051 for( y=0; y<image.height(); y++)
00052 {
00053 scanLine = image.scanLine(y);
00054 for( x=0; x<image.width(); x++)
00055 {
00056 rgb = ((QRgb*)scanLine+x);
00057 double r = ((double)qRed(*rgb) )/255.0;
00058 double g = ((double)qGreen(*rgb) )/255.0;
00059 double b = ((double)qBlue(*rgb) )/255.0;
00060
00061 meanR+=r;
00062 meanG+=g;
00063 meanB+=b;
00064 }
00065 }
00066 meanR = meanR / ( image.width() * image.height() );
00067 meanG = meanG / ( image.width() * image.height() );
00068 meanB = meanB / ( image.width() * image.height() );
00069
00070 QFrame* visibleFrame = new QFrame( this, "visible widgets" );
00071
00072
00073 previewInterface = new ScaledPreviewInterface( fileName, visibleFrame,
00074 "previewInterface" );
00075 connect( previewInterface, SIGNAL(resized()),
00076 this, SLOT(generateAdjustedPreviewImage()) );
00077
00078 previewSelection = new QComboBox( visibleFrame, "previewSelction" );
00079 previewSelection->insertItem( tr("Split View") );
00080 previewSelection->insertItem( tr("Original Image") );
00081 previewSelection->insertItem( tr("Adjusted Image") );
00082 connect( previewSelection, SIGNAL(activated(int)), this, SLOT(selectPreviewImageType(int)) );
00083
00084
00085 histogramInterface = new HistogramInterface( fileName, visibleFrame,
00086 "histogramInterface" );
00087
00088
00089 connect( histogramInterface, SIGNAL( selectedRangeChanged() ),
00090 SLOT( generateAdjustedPreviewImage() ) );
00091
00092 QToolTip::add( histogramInterface, tr("Click and drag to select tonal range") );
00093
00094 histogramType = new QComboBox( visibleFrame, "histogramType" );
00095 histogramType->insertItem( tr("Luminosity") );
00096 histogramType->insertItem( tr("Red") );
00097 histogramType->insertItem( tr("Green") );
00098 histogramType->insertItem( tr("Blue") );
00099 connect( histogramType, SIGNAL(activated(int)), this, SLOT(selectHistogramType(int)) );
00100 QToolTip::add( histogramType, tr("Histogram channel displayed") );
00101
00102
00103 QString noChange = QString( tr("No change") );
00104
00105 brightness = new DynamicSlider( Qt::Vertical, visibleFrame );
00106 brightness->setZeroString( noChange );
00107 brightness->setPrefixes("", "+");
00108 brightness->setMinValue( -SLIDER_RADIUS );
00109 brightness->setMaxValue( SLIDER_RADIUS );
00110 connect( brightness, SIGNAL(valueChanged(int)),
00111 this, SLOT(generateAdjustedPreviewImage()) );;
00112 QToolTip::add( brightness, tr("Drag to adjust image brightness") );
00113
00114 brightnessIcon = new ClickableLabel( visibleFrame, "brightnessIcon" );
00115 brightnessIcon->setPixmap( QPixmap(QString(IMAGE_PATH)+"miscImages/brightness.png") );
00116 connect( brightnessIcon, SIGNAL(clicked()), SLOT(resetBrightness()) );
00117 QToolTip::add( brightnessIcon, tr("Reset brightness") );
00118
00119 contrast = new DynamicSlider( Qt::Vertical, visibleFrame );
00120 contrast->setZeroString( noChange );
00121 contrast->setPrefixes("", "+");
00122 contrast->setMinValue( -SLIDER_RADIUS );
00123 contrast->setMaxValue( SLIDER_RADIUS );
00124 connect( contrast, SIGNAL(valueChanged(int)),
00125 this, SLOT(generateAdjustedPreviewImage()) );
00126 QToolTip::add( contrast, tr("Drag to adjust image contrast") );
00127
00128 contrastIcon = new ClickableLabel( visibleFrame, "contrastIcon" );
00129 contrastIcon->setPixmap( QPixmap(QString(IMAGE_PATH)+"miscImages/contrast.png") );
00130 connect( contrastIcon, SIGNAL(clicked()), SLOT(resetContrast()) );
00131 QToolTip::add( contrastIcon, tr("Reset contrast") );
00132
00133
00134 buttonsFrame = new QFrame( visibleFrame, "dialogButtons" );
00135
00136 QPushButton* applyButton = new QPushButton( tr("Apply"), buttonsFrame );
00137 applyButton->setDefault(true);
00138 applyButton->setFocus();
00139 connect( applyButton, SIGNAL(clicked()), SLOT(applyAction()) );
00140
00141 QPushButton* cancelButton = new QPushButton( tr("Cancel"), buttonsFrame );
00142 connect( cancelButton, SIGNAL(clicked()), SLOT(reject()) );
00143
00144 QPushButton* resetButton = new QPushButton( tr("Reset"), buttonsFrame );
00145 connect( resetButton, SIGNAL(clicked()), SLOT(resetAction()) );
00146
00147 QGridLayout* buttonsGrid = new QGridLayout( buttonsFrame, 1, 5, 0 );
00148 buttonsGrid->setColStretch( 0, 1 );
00149 buttonsGrid->addWidget( applyButton, 0, 1 );
00150 buttonsGrid->addWidget( cancelButton, 0, 2 );
00151 buttonsGrid->addWidget( resetButton, 0, 3 );
00152 buttonsGrid->setColStretch( 4, 1 );
00153 buttonsGrid->setSpacing( WIDGET_SPACING );
00154
00155 QGridLayout* mainGrid = new QGridLayout( visibleFrame, 5, 3, 0 );
00156
00157 mainGrid->addMultiCellWidget( previewInterface, 0,0, 0,2 );
00158 mainGrid->addMultiCellWidget( previewSelection, 1,1, 0,2, Qt::AlignHCenter );
00159
00160 mainGrid->addWidget( histogramInterface, 2, 0 );
00161 mainGrid->addWidget( brightness, 2, 1 );
00162 mainGrid->addWidget( contrast, 2, 2 );
00163
00164
00165 mainGrid->setRowSpacing( 2, 2*SLIDER_RADIUS + 5) ;
00166
00167 mainGrid->addWidget( histogramType, 3, 0, Qt::AlignHCenter );
00168 mainGrid->addWidget( brightnessIcon, 3, 1 );
00169 mainGrid->addWidget( contrastIcon, 3, 2 );
00170
00171 mainGrid->addMultiCellWidget( buttonsFrame, 4,4, 0,2 );
00172
00173 mainGrid->setRowStretch( 0, 1 );
00174 mainGrid->setColStretch( 0, 1 );
00175
00176 mainGrid->setSpacing( WIDGET_SPACING );
00177 mainGrid->setMargin( WIDGET_SPACING );
00178
00179 QGridLayout* invisibleGrid = new QGridLayout( this, 2, 1, 0 );
00180 invisibleGrid->addWidget( visibleFrame, 0, 0 );
00181 invisibleGrid->setRowStretch( 0, 1 );
00182
00183
00184
00185
00186 #if defined(Q_OS_WIN)
00187 QSizeGrip* sizeGrip = new QSizeGrip( this );
00188 invisibleGrid->addWidget( sizeGrip, 1, 0, Qt::AlignRight | Qt::AlignBottom );
00189 #endif
00190
00191
00192
00193
00194
00195 setCaption( tr("Histogram Editor") );
00196
00197 }
00198
00199 HistogramEditor::~HistogramEditor() { }
00200
00201 void HistogramEditor::applyAction()
00202 {
00203
00204
00205
00206 int lumLeft, lumRight, redLeft, redRight, greenLeft, greenRight, blueLeft, blueRight;
00207 histogramInterface->getHistBoundaries( lumLeft, lumRight,
00208 redLeft, redRight,
00209 greenLeft, greenRight,
00210 blueLeft, blueRight );
00211 if( brightness->value() != 0 || contrast->value() != 0 ||
00212 lumLeft != 0 || lumRight != 255 ||
00213 redLeft !=0 || redRight != 255 ||
00214 greenLeft != 0 || greenRight != 255 ||
00215 blueLeft != 0 || blueRight != 255 )
00216 { accept(); }
00217 else
00218 { reject(); }
00219 }
00220
00221 void HistogramEditor::resetAction()
00222 {
00223 histogramInterface->resetBoundaries();
00224 resetBrightness();
00225 resetContrast();
00226 }
00227
00228 QImage* HistogramEditor::getModifiedImage()
00229 {
00230 QImage* adjustedImage = new QImage(fileName);
00231
00232
00233 if( adjustedImage->depth() < 32 )
00234 {
00235 QImage* tmp = adjustedImage;
00236 adjustedImage = new QImage( tmp->convertDepth( 32, Qt::AutoColor ) );
00237 delete tmp; tmp=NULL;
00238 }
00239
00240 adjustImage( *adjustedImage );
00241 return adjustedImage;
00242 }
00243
00244 void HistogramEditor::selectPreviewImageType( int selection )
00245 {
00246 previewInterface->setPreviewMode( (PREVIEW_MODE)selection );
00247 }
00248
00249 void HistogramEditor::selectHistogramType( int selection )
00250 {
00251 histogramInterface->setDisplayChannel( (DISPLAYED_CHANNEL) selection );
00252 }
00253
00254 void HistogramEditor::resetBrightness()
00255 { brightness->setValue( 0 ); }
00256
00257 void HistogramEditor::resetContrast()
00258 { contrast->setValue( 0 ); }
00259
00260 void HistogramEditor::getHistBoundaries(int &lumLeft, int &lumRight,
00261 int &redLeft, int &redRight,
00262 int &greenLeft, int &greenRight,
00263 int &blueLeft, int &blueRight)
00264 {
00265
00266 if( histogramInterface )
00267 {
00268 histogramInterface->getHistBoundaries( lumLeft, lumRight,
00269 redLeft, redRight,
00270 greenLeft, greenRight,
00271 blueLeft, blueRight );
00272 }
00273 else
00274 {
00275 lumLeft = 0; lumRight = 255;
00276 redLeft = 0; redRight = 255;
00277 greenLeft = 0; greenRight = 255;
00278 blueLeft = 0; blueRight = 255;
00279 }
00280 }
00281
00282 void HistogramEditor::generateAdjustedPreviewImage()
00283 {
00284
00285 QImage origImage = previewInterface->getOrigImage();
00286
00287
00288 QImage adjustedImage = origImage.copy();
00289 adjustImage( adjustedImage );
00290
00291
00292 previewInterface->setAdjustedImage( adjustedImage );
00293 }
00294
00295 void HistogramEditor::adjustImage( QImage &image )
00296 {
00297
00298
00299 int lumLeft, lumRight, redLeft, redRight, greenLeft, greenRight, blueLeft, blueRight;
00300 if( histogramInterface )
00301 {
00302 histogramInterface->getHistBoundaries( lumLeft, lumRight,
00303 redLeft, redRight,
00304 greenLeft, greenRight,
00305 blueLeft, blueRight );
00306 }
00307 else
00308 {
00309 lumLeft = 0; lumRight = 255;
00310 redLeft = 0; redRight = 255;
00311 greenLeft = 0; greenRight = 255;
00312 blueLeft = 0; blueRight = 255;
00313 }
00314
00315
00316 double displayToOneScalar = 1.0/255.0;
00317 double scaledMeanR = displayToOneScalar*scaleColor( 255.0*meanR, redLeft, redRight );
00318 double scaledMeanG = displayToOneScalar*scaleColor( 255.0*meanG, greenLeft, greenRight );
00319 double scaledMeanB = displayToOneScalar*scaleColor( 255.0*meanB, blueLeft, blueRight );
00320
00321 double brightnessScalar, addedBrightnessColor;
00322 if(brightness->value() < 0)
00323 {
00324 brightnessScalar = ((double)(SLIDER_RADIUS + brightness->value()))/SLIDER_RADIUS;
00325 addedBrightnessColor = 1.0 - brightnessScalar;
00326 }
00327 else
00328 {
00329 brightnessScalar = ((double)(SLIDER_RADIUS - brightness->value()))/SLIDER_RADIUS;
00330 addedBrightnessColor = 0.0;
00331 }
00332
00333 int x, y;
00334 QRgb* rgb;
00335 double r,g,b;
00336 double h,s,v;
00337 int rPrime, gPrime, bPrime;
00338 uchar* scanLine;
00339
00340 for( y=0; y<image.height(); y++)
00341 {
00342 scanLine = image.scanLine(y);
00343 for( x=0; x<image.width(); x++)
00344 {
00345
00346 rgb = ((QRgb*)scanLine+x);
00347 r = qRed(*rgb);
00348 g = qGreen(*rgb);
00349 b = qBlue(*rgb);
00350
00351
00352 RGBtoHSV(r,g,b,&h,&s,&v);
00353 v = scaleColor( v, lumLeft, lumRight );
00354 HSVtoRGB( &r,&g,&b, h,s,v);
00355
00356 r = scaleColor( r, redLeft, redRight );
00357 g = scaleColor( g, greenLeft, greenRight );
00358 b = scaleColor( b, blueLeft, blueRight );
00359
00360
00361 r = r*displayToOneScalar;
00362 g = g*displayToOneScalar;
00363 b = b*displayToOneScalar;
00364
00365
00366 r = ( (r-scaledMeanR) * (SLIDER_RADIUS-contrast->value()) )/SLIDER_RADIUS + scaledMeanR;
00367 g = ( (g-scaledMeanG) * (SLIDER_RADIUS-contrast->value()) )/SLIDER_RADIUS + scaledMeanG;
00368 b = ( (b-scaledMeanB) * (SLIDER_RADIUS-contrast->value()) )/SLIDER_RADIUS + scaledMeanB;
00369
00370
00371
00372 r = brightnessScalar*r + addedBrightnessColor;
00373 g = brightnessScalar*g + addedBrightnessColor;
00374 b = brightnessScalar*b + addedBrightnessColor;
00375
00376
00377 rPrime = (int) QMIN( QMAX((r*255), 0), 255 );
00378 gPrime = (int) QMIN( QMAX((g*255), 0), 255 );
00379 bPrime = (int) QMIN( QMAX((b*255), 0), 255 );
00380
00381
00382 *rgb = qRgb(rPrime, gPrime, bPrime);
00383 }
00384 }
00385 }
00386
00387 double HistogramEditor::scaleColor( double color, int left, int right )
00388 {
00389 return QMAX( QMIN( (255.0*(color-left)) / (right-left), 255), 0 );
00390 }
00391
00392 void HistogramEditor::keyPressEvent(QKeyEvent *e)
00393 {
00394 if(e->key() == Qt::Key_Control )
00395 {
00396 PREVIEW_MODE curMode = (PREVIEW_MODE) previewSelection->currentItem();
00397 if(curMode == ORIGINAL_IMAGE)
00398 previewInterface->setPreviewMode( ADJUSTED_IMAGE, true );
00399 else if(curMode == ADJUSTED_IMAGE)
00400 previewInterface->setPreviewMode( ORIGINAL_IMAGE, true );
00401 else
00402 previewInterface->setPreviewMode( INV_SPLIT_VIEW );
00403 }
00404 else { QDialog::keyPressEvent(e); }
00405 }
00406
00407 void HistogramEditor::keyReleaseEvent(QKeyEvent *e)
00408 {
00409 if(e->key() == Qt::Key_Control )
00410 {
00411 previewInterface->setPreviewMode( (PREVIEW_MODE) previewSelection->currentItem(),
00412 false );
00413 }
00414 else { QDialog::keyReleaseEvent(e); }
00415 }
00416
00417
00418