#include <qcolor.h>
Include dependency graph for imageTools.h:
This graph shows which files directly or indirectly include this file:
Go to the source code of this file.
Enumerations | |
| enum | TRANSFORM_CODE { ROTATE_90, ROTATE_270, FLIP_H, FLIP_V } |
Functions | |
| bool | isJpeg (const char *filename) |
| Checks to see if an image is a valid jpg by seeing if the image dimensions can be read. | |
| void | calcScaledImageDimensions (int origWidth, int origHeight, int idealWidth, int idealHeight, int &width, int &height) |
| Computes scale of image dimensions while respecting aspect ratio, equivalent to a QImage::scaleMin without actually scaling any image. | |
| void | constructImages (QString imageName, QImage &slideshowImage, QImage &thumbnailImage) |
| Constructs slideshow and thumbnail images for a full sized image. | |
| bool | transformImage (QString fileIn, QString fileOut, TRANSFORM_CODE transformation) |
| Apply image transformation on image. | |
| bool | scaleImage (QString fileIn, QString fileOut, int newWidth, int newHeight) |
| Scale image and save copy to disk. | |
| bool | scaleImage (QString fileIn, QImage &scaledImage, int targetWidth, int targetHeight) |
| Loaded scaled version of image. | |
| bool | getImageSize (const char *filename, QSize &size) |
| Get image dimensions. | |
| bool | getImageSize (const char *filename, int &width, int &height) |
| Get image dimensions. | |
| double | RGBtoL (QRgb *rgb) |
| find luminance of a rgb color triplet | |
| void | RGBtoHSV (double r, double g, double b, double *h, double *s, double *v) |
| Convert a RGB color triplet to HSV. | |
| void | HSVtoRGB (double *r, double *g, double *b, double h, double s, double v) |
| Convert a HSV color triplet to RGB. | |
|
|
Definition at line 24 of file imageTools.h. 00025 {
00026 ROTATE_90, //rotate clockwise 90 degrees
00027 ROTATE_270, //rotate counter-clockwise 90 degrees
00028 FLIP_H, //flip left-to-right
00029 FLIP_V, //flip top-to-bottom
00030 } TRANSFORM_CODE;
|
|
||||||||||||||||||||||||||||
|
Computes scale of image dimensions while respecting aspect ratio, equivalent to a QImage::scaleMin without actually scaling any image.
Definition at line 39 of file imageTools.cpp. Referenced by AlbumStatistics::AlbumStatistics(), constructImages(), SubalbumPreviewWidget::createSubalbumPixmap(), PhotoDescEdit::PhotoDescEdit(), EditingInterface::rotateSelection(), EditingInterface::selectAspectRatio(), Subalbum::setRepresentativeImage(), and Album::setRepresentativeImages(). 00042 {
00043 //if original dimensions are within ideal new size then use
00044 //original dimensions
00045 if(origWidth <= idealWidth &&
00046 origHeight <= idealHeight)
00047 {
00048 width = origWidth;
00049 height = origHeight;
00050 return;
00051 }
00052
00053 //else find dimension which is way over bounds
00054 float widthRatio = ((float)idealWidth) / ((float)origWidth);
00055 float heightRatio = ((float)idealHeight) / ((float)origHeight);
00056
00057 if(widthRatio < heightRatio)
00058 {
00059 width = idealWidth;
00060 height = (int)((((float)idealWidth) / ((float)origWidth)) * ((float)origHeight));
00061 }
00062 else
00063 {
00064 height = idealHeight;
00065 width = (int)((((float)idealHeight) / ((float)origHeight)) * ((float)origWidth));
00066 }
00067 }
|
|
||||||||||||||||
|
Constructs slideshow and thumbnail images for a full sized image.
Definition at line 69 of file imageTools.cpp. References calcScaledImageDimensions(), getImageSize(), scaleImage(), SLIDESHOW_HEIGHT, SLIDESHOW_WIDTH, THUMBNAIL_HEIGHT, and THUMBNAIL_WIDTH. Referenced by Photo::constructSmallerImages(). 00071 {
00072 //---------------------------------------------------------
00073 //obtain original image width and height
00074 int origWidth, origHeight;
00075 getImageSize( imageName, origWidth, origHeight );
00076
00077 //compute dimensions of unhapped scaled thumbnail and slideshow images
00078 int thumbWidth, thumbHeight;
00079 calcScaledImageDimensions( origWidth, origHeight,
00080 THUMBNAIL_WIDTH, THUMBNAIL_HEIGHT,
00081 thumbWidth, thumbHeight);
00082
00083 int slideWidth, slideHeight;
00084 calcScaledImageDimensions( origWidth, origHeight,
00085 SLIDESHOW_WIDTH, SLIDESHOW_HEIGHT,
00086 slideWidth, slideHeight);
00087 //---------------------------------------------------------
00088 //create slide show image
00089
00090 //first scale full image to unpadded dimensions
00091 QImage temp;
00092 scaleImage( imageName, temp, slideWidth, slideHeight );
00093 slideWidth = temp.width();
00094 slideHeight = temp.height();
00095
00096 //create slideshow image and fill with white
00097 slideshowImage.create( SLIDESHOW_WIDTH, SLIDESHOW_HEIGHT, 32 );
00098 slideshowImage.fill( Qt::white.rgb() );
00099
00100 //paint unpadded scaled image
00101 int xDiff = SLIDESHOW_WIDTH - slideWidth;
00102 int yDiff = SLIDESHOW_HEIGHT - slideHeight;
00103 bitBlt( &slideshowImage, xDiff/2, yDiff/2,
00104 &temp, 0, 0, slideWidth, slideHeight );
00105
00106 //---------------------------------------------------------
00107 //create thumnail image
00108 scaleImage( imageName, thumbnailImage, thumbWidth, thumbHeight );
00109 //---------------------------------------------------------
00110 }
|
|
||||||||||||||||
|
||||||||||||
|
Get image dimensions.
Definition at line 192 of file imageTools.cpp. References getImageSize(). 00193 {
00194 int w,h;
00195 bool result = getImageSize( filename, w, h );
00196 size.setWidth( w );
00197 size.setHeight( h );
00198 return result;
00199 }
|
|
||||||||||||||||||||||||||||
|
Convert a HSV color triplet to RGB.
Definition at line 264 of file imageTools.cpp. Referenced by HistogramEditor::adjustImage(), SelectionInterface::constructDisplayImages(), embossEffect(), enhanceImageContrast(), SelectionPlacementInterface::SelectionPlacementInterface(), and sharpenImage(). 00266 {
00267 int i;
00268 double f, p, q, t;
00269
00270 if( s == 0 ) {
00271 // achromatic (grey)
00272 *r = *g = *b = v;
00273 return;
00274 }
00275
00276 h /= 60; // sector 0 to 5
00277 i = (int)floor( h );
00278 f = h - i; // factorial part of h
00279 p = v * ( 1 - s );
00280 q = v * ( 1 - s * f );
00281 t = v * ( 1 - s * ( 1 - f ) );
00282
00283 switch( i ) {
00284 case 0:
00285 *r = v;
00286 *g = t;
00287 *b = p;
00288 break;
00289 case 1:
00290 *r = q;
00291 *g = v;
00292 *b = p;
00293 break;
00294 case 2:
00295 *r = p;
00296 *g = v;
00297 *b = t;
00298 break;
00299 case 3:
00300 *r = p;
00301 *g = q;
00302 *b = v;
00303 break;
00304 case 4:
00305 *r = t;
00306 *g = p;
00307 *b = v;
00308 break;
00309 default: // case 5:
00310 *r = v;
00311 *g = p;
00312 *b = q;
00313 break;
00314 }
00315 }
|
|
|
Checks to see if an image is a valid jpg by seeing if the image dimensions can be read.
Definition at line 33 of file imageTools.cpp. References getJPEGSize(). Referenced by Photo::setImage(), and transformImage(). 00034 {
00035 int w,h;
00036 return getJPEGSize( QFile::encodeName(filename), w, h );
00037 }
|
|
||||||||||||||||||||||||||||
|
Convert a RGB color triplet to HSV.
Definition at line 231 of file imageTools.cpp. References b. Referenced by HistogramEditor::adjustImage(), SelectionInterface::constructDisplayImages(), embossEffect(), enhanceImageContrast(), RGBtoL(), SelectionPlacementInterface::SelectionPlacementInterface(), and sharpenImage(). 00233 {
00234 double min, max, delta;
00235
00236 min = QMIN(QMIN( r, g), b );
00237 max = QMAX(QMAX( r, g), b );
00238 *v = max; // v
00239
00240 delta = max - min;
00241
00242 if( max != 0 )
00243 *s = delta / max; // s
00244 else {
00245 // r = g = b = 0 // s = 0, v is undefined
00246 *s = 0;
00247 *h = -1;
00248 return;
00249 }
00250
00251 if( r == max )
00252 *h = ( g - b ) / delta; // between yellow & magenta
00253 else if( g == max )
00254 *h = 2 + ( b - r ) / delta; // between cyan & yellow
00255 else
00256 *h = 4 + ( r - g ) / delta; // between magenta & cyan
00257
00258 *h *= 60; // degrees
00259 if( *h < 0 )
00260 *h += 360;
00261
00262 }
|
|
|
find luminance of a rgb color triplet
Definition at line 217 of file imageTools.cpp. References b, and RGBtoHSV(). Referenced by enhanceImageContrast(). 00218 {
00219 double r = ((double)qRed(*rgb) )/255.0;
00220 double g = ((double)qGreen(*rgb) )/255.0;
00221 double b = ((double)qBlue(*rgb) )/255.0;
00222
00223 double h,s,v;
00224 RGBtoHSV(r,g,b,&h,&s,&v);
00225 return 255.0*v;
00226 }
|
|
||||||||||||||||||||
|
Loaded scaled version of image.
Definition at line 171 of file imageTools.cpp. References scaleJPEG(). Referenced by EditingInterface::applyImageUpdate(), RecentAlbumMenuItem::changeItem(), constructImages(), constructImageTiles(), GrainEditor::GrainEditor(), HistogramInterface::HistogramInterface(), SlideshowWidget::loadPhoto(), TitleWidget::refreshOpenRecentMenu(), EditingInterface::revertCurrentPhoto(), EditingInterface::rotateFlip(), GeneratePreviewThread::run(), ScaledPreviewInterface::ScaledPreviewInterface(), scaleImage(), SelectionPlacementInterface::SelectionPlacementInterface(), SelectionInterface::setPhoto(), EditingInterface::setPhoto(), Subalbum::setRepresentativeImage(), Album::setRepresentativeImages(), setWallpaper(), and EditingInterface::showNextPrevFirstLastPhoto(). 00172 {
00173 //if file is jpeg use faster method
00174 QString extension = QFileInfo(fileIn).extension(false).lower();
00175 if( extension.compare("jpeg") == 0 ||
00176 extension.compare("jpg") == 0 )
00177 return scaleJPEG( QFile::encodeName(fileIn), scaledImage, targetWidth, targetHeight );
00178
00179 //use slow smooth-scale method for scaling image.
00180 //clamp scaling to <= 2x
00181 QImage orig(fileIn);
00182 if(QMIN( ((float)targetWidth)/orig.width(), ((float)targetHeight)/orig.height() ) > 2)
00183 {
00184 targetWidth = 2*orig.width();
00185 targetHeight = 2*orig.height();
00186 }
00187
00188 scaledImage = orig.smoothScale( targetWidth, targetHeight, QImage::ScaleMin );
00189 return true;
00190 }
|
|
||||||||||||||||||||
|
Scale image and save copy to disk.
Definition at line 157 of file imageTools.cpp. References scaleImage(). 00159 {
00160 //scale image
00161 QImage scaledImage;
00162 if( scaleImage(fileIn, scaledImage, newWidth, newHeight ) )
00163 {
00164 scaledImage.save( fileOut, "JPEG", 95 );
00165 return true;
00166 }
00167 else
00168 return false;
00169 }
|
|
||||||||||||||||
|
Apply image transformation on image.
Definition at line 112 of file imageTools.cpp. References isJpeg(), and transformJPEG(). Referenced by Photo::applyTransformation(), and EditingInterface::rotateFlip(). 00113 {
00114 //if file is jpeg use faster method
00115 if( isJpeg(fileIn) )
00116 return transformJPEG( fileIn, fileOut, transformation );
00117
00118 //load image
00119 QImage origImage(fileIn);
00120 QImage transformedImage;
00121
00122 //transform image
00123 if(transformation == ROTATE_90)
00124 {
00125 if(!transformedImage.create( origImage.height(), origImage.width(), origImage.depth() ) )
00126 return false;
00127
00128 int x,y;
00129 for(x=0; x < origImage.height(); x++)
00130 {
00131 for(y=0; y < origImage.width(); y++)
00132 transformedImage.setPixel(origImage.height() - 1 - x, y, origImage.pixel(y, x) );
00133 }
00134 }
00135 else if(transformation == ROTATE_270)
00136 {
00137 if(!transformedImage.create( origImage.height(), origImage.width(), origImage.depth() ) )
00138 return false;
00139
00140 int x,y;
00141 for(x=0; x < origImage.height(); x++)
00142 {
00143 for(y=0; y < origImage.width(); y++)
00144 transformedImage.setPixel(x, origImage.width() - 1 - y, origImage.pixel(y, x) );
00145 }
00146 }
00147 else if(transformation == FLIP_H)
00148 { transformedImage = origImage.mirror(false,true); }
00149 else
00150 { transformedImage = origImage.mirror(true,false); }
00151
00152 //save out transformed image
00153 transformedImage.save( fileOut, "JPEG", 95 );
00154 return true;
00155 }
|
1.3.9.1