AlbumShaper
1.0a3
|
#include <qimage.h>
#include <qstring.h>
#include <qapplication.h>
#include "sepia.h"
#include "manipulationOptions.h"
#include "../../gui/statusWidget.h"
Go to the source code of this file.
Functions | |
QImage * | sepiaEffect (QString filename, ManipulationOptions *options) |
QImage* sepiaEffect | ( | QString | filename, |
ManipulationOptions * | options | ||
) |
Definition at line 54 of file sepia.cpp.
References editedImage, ManipulationOptions::getStatus(), StatusWidget::incrementProgress(), newProgress, StatusWidget::showProgressBar(), status, and updateIncrement.
Referenced by EditingInterface::applyEffect().
{ //load image QImage* editedImage = new QImage( filename ); //convert to 32-bit depth if necessary if( editedImage->depth() < 32 ) { QImage* tmp = editedImage; editedImage = new QImage( tmp->convertDepth( 32, Qt::AutoColor ) ); delete tmp; tmp=NULL; } //determine if busy indicators will be used bool useBusyIndicators = false; StatusWidget* status = NULL; if( options != NULL && options->getStatus() != NULL ) { useBusyIndicators = true; status = options->getStatus(); } //setup progress bar if(useBusyIndicators) { QString statusMessage = qApp->translate( "sepiaEffect", "Applying Sepia Effect:" ); status->showProgressBar( statusMessage, 100 ); qApp->processEvents(); } //update progress bar for every 1% of completion const int updateIncrement = (int) ( 0.01 * editedImage->width() * editedImage->height() ); int newProgress = 0; //compute the hsl/hsv coordinates of sepia color int sepiaH, sepiaS, sepiaL; QColor(162,128,101).getHsv( &sepiaH, &sepiaS, &sepiaL ); //iterate over each selected scanline int x, y, pixelLuminance; QRgb* rgb; QColor sepiaColor; uchar* scanLine; for( y=0; y<editedImage->height(); y++) { //iterate over each selected pixel in scanline scanLine = editedImage->scanLine(y); for( x=0; x<editedImage->width(); x++) { //compute gray value based on the display luminance of color coordinates rgb = ((QRgb*)scanLine+x); pixelLuminance = (int) (0.2125*qRed(*rgb) + 0.7154*qGreen(*rgb) + 0.0721*qBlue(*rgb)); //compute and set sepia color sepiaColor.setHsv( sepiaH, sepiaS, pixelLuminance ); *rgb = sepiaColor.rgb(); //update status bar if significant progress has been made since last update if(useBusyIndicators) { newProgress++; if(newProgress >= updateIncrement) { newProgress = 0; status->incrementProgress(); qApp->processEvents(); } } } } //return pointer to edited image return editedImage; }