imageTools.cpp File Reference

#include <fstream>
#include <qstring.h>
#include <qimage.h>
#include <qfile.h>
#include <qdatastream.h>
#include "imageTools.h"
#include "../config.h"

Include dependency graph for imageTools.cpp:

Go to the source code of this file.

Functions
void	resizeImage (int originalWidth, int originalHeight, int maxWidth, int maxHeight, int &newWidth, int &newHeight)
	Returns new image dimensions keeping size ratio.
void	copyFile (QString oldFilePath, QString newFilePath)
	Copies a file from one location to another.
void	createImages (QImage *fullImage, QImage **slideshowImage, QImage **thumbnailImage, QImage **paddedThumbnailImage, int &slideshowWidth, int &slideshowHeight)
	Given a pointer to a full image, constructs slideshow, thumbnail, and padded thumbnail images.

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Function Documentation

void copyFile (  QString  oldFilePath, QString  newFilePath )

Copies a file from one location to another. Definition at line 63 of file imageTools.cpp. Referenced by Album::exportSubalbumImages(), Album::exportThemeResources(), and Album::reorderSubalbumImages(). { //if copying file from old location to new just skip, this //occurs when resaving albums with new themes but to same location if(oldFilePath == newFilePath) return; const int BUFFER_SIZE = 1024; Q_INT8 buffer[BUFFER_SIZE]; QFile oldFile(oldFilePath); QFile newFile(newFilePath); oldFile.open( IO_ReadOnly ); newFile.open( IO_WriteOnly ); QDataStream srcStream(&oldFile); QDataStream destStream(&newFile); while(!srcStream.atEnd()) { int i = 0; while(!srcStream.atEnd() && i < BUFFER_SIZE) { srcStream >> buffer[i]; i++; } int k = 0; for(k = 0; k < i; k++) { destStream << buffer[k]; } } }

void createImages (  QImage *  fullImage, QImage **  slideshowImage, QImage **  thumbnailImage, QImage **  paddedThumbnailImage, int &  slideshowWidth, int &  slideshowHeight )

Given a pointer to a full image, constructs slideshow, thumbnail, and padded thumbnail images. Definition at line 98 of file imageTools.cpp. References resizeImage(), SLIDESHOW_HEIGHT, SLIDESHOW_WIDTH, THUMBNAIL_HEIGHT, and THUMBNAIL_WIDTH. Referenced by Photo::flipHorizontally(), Photo::flipVertically(), Photo::rotate270(), Photo::rotate90(), and Photo::setImage(). { //--------------------------------------------------------- if((*paddedThumbnailImage) != (*thumbnailImage)) delete (*paddedThumbnailImage); delete (*thumbnailImage); delete (*slideshowImage); //--------------------------------------------------------- int thumbnailW = 0; int thumbnailH = 0; //--------------------------------------------------------- resizeImage( fullImage->width(), fullImage->height(), THUMBNAIL_WIDTH, THUMBNAIL_HEIGHT, thumbnailW, thumbnailH); resizeImage( fullImage->width(), fullImage->height(), SLIDESHOW_WIDTH, SLIDESHOW_HEIGHT, slideshowWidth, slideshowHeight); //--------------------------------------------------------- //scale slide show image QImage temp = fullImage->smoothScale( slideshowWidth, slideshowHeight ); temp.setAlphaBuffer(true); //create full size slide show image (*slideshowImage) = new QImage(SLIDESHOW_WIDTH, SLIDESHOW_HEIGHT, 32); (*slideshowImage)->setAlphaBuffer(true); //copy scaled image into centered portion of real slideshow image int xDiff = SLIDESHOW_WIDTH - slideshowWidth; int yDiff = SLIDESHOW_HEIGHT - slideshowHeight; //set all pixels to white int x,y; for(x=0; x< SLIDESHOW_WIDTH; x++) { for(y=0; y<SLIDESHOW_HEIGHT; y++) { (*slideshowImage)->setPixel(x, y, QColor(255, 255, 255).rgb()); } } int x2 = 0; int y2; for(x = xDiff/2; x< (xDiff/2) + slideshowWidth; x++) { y2 = 0; for(y = yDiff/2; y < (yDiff/2) + slideshowHeight; y++) { (*slideshowImage)->setPixel(x, y, temp.pixel(x2, y2)); y2++; } x2++; } //--------------------------------------------------------- //scale down thumbnail image (*thumbnailImage) = new QImage(fullImage->smoothScale( thumbnailW, thumbnailH )); (*thumbnailImage)->setAlphaBuffer(true); //--------------------------------------------------------- //if scaled thumbnail image is same size as padded thumbnail should be reuse object if(thumbnailW == THUMBNAIL_WIDTH && thumbnailH == THUMBNAIL_HEIGHT) { (*paddedThumbnailImage) = (*thumbnailImage); } //else pad thumbnail else { //created padded thumbnail image (*paddedThumbnailImage) = new QImage(THUMBNAIL_WIDTH, THUMBNAIL_HEIGHT, 32); (*paddedThumbnailImage)->setAlphaBuffer(true); //copy scaled image into centered portion of padded image xDiff = THUMBNAIL_WIDTH - thumbnailW; yDiff = THUMBNAIL_HEIGHT - thumbnailH; //set all pixels to white for(x=0; x< THUMBNAIL_WIDTH; x++) { for(y=0; y<THUMBNAIL_HEIGHT; y++) { (*paddedThumbnailImage)->setPixel(x, y, QColor(255, 255, 255).rgb()); } } x2 = 0; for(x = xDiff/2; x< (xDiff/2) + thumbnailW; x++) { y2 = 0; for(y = yDiff/2; y < (yDiff/2) + thumbnailH; y++) { (*paddedThumbnailImage)->setPixel(x, y, (*thumbnailImage)->pixel(x2, y2)); y2++; } x2++; } } //--------------------------------------------------------- }

void resizeImage (  int  originalWidth, int  originalHeight, int  maxWidth, int  maxHeight, int &  newWidth, int &  newHeight )

Returns new image dimensions keeping size ratio. Definition at line 30 of file imageTools.cpp. Referenced by AlbumStatistics::AlbumStatistics(), createImages(), PhotoEditWidget::setPhoto(), Album::setRepresentativeImages(), and Subalbum::setRepresentativeImages(). { //if original dimensions are within max new size then use //original dimensions if(originalWidth <= maxWidth && originalHeight <= maxHeight) { newWidth = originalWidth; newHeight = originalHeight; return; } //else find dimension which is way over bounds float ratWidth = ((float)maxWidth) / ((float)originalWidth); float ratHeight = ((float)maxHeight) / ((float)originalHeight); if(ratWidth < ratHeight) { newWidth = maxWidth; newHeight = (int)((((float)maxWidth) / ((float)originalWidth)) * ((float)originalHeight)); } else { newHeight = maxHeight; newWidth = (int)((((float)maxHeight) / ((float)originalHeight)) * ((float)originalWidth)); } }

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