00083 {
00084
00085 QImage originalImage( filename );
00086
00087
00088
if( originalImage.depth() < 32 ) { originalImage = originalImage.convertDepth( 32, Qt::AutoColor ); }
00089
00090
00091 QImage*
editedImage =
new QImage( filename );
00092
00093
00094
if(
editedImage->depth() < 32 )
00095 {
00096 QImage* tmp =
editedImage;
00097
editedImage =
new QImage( tmp->convertDepth( 32, Qt::AutoColor ) );
00098
delete tmp; tmp=NULL;
00099 }
00100
00101
00102
bool useBusyIndicators =
false;
00103
StatusWidget*
status = NULL;
00104
if( options != NULL && options->
getStatus() != NULL )
00105 {
00106 useBusyIndicators =
true;
00107
status = options->
getStatus();
00108 }
00109
00110
00111
if(useBusyIndicators)
00112 {
00113 QString statusMessage = qApp->translate(
"embossEffect",
"Applying Emboss Effect:" );
00114
status->
showProgressBar( statusMessage, 100 );
00115 qApp->processEvents();
00116 }
00117
00118
00119
const int updateIncrement = (
int) ( 0.01 * originalImage.width() * originalImage.height() );
00120
int newProgress = 0;
00121
00122
00123
int x, y;
00124 QRgb* rgb;
00125 uchar* scanLine;
00126
00127
int yPrev, yNext, xPrev, xNext;
00128
00129
00130
double minDimen = (
double) QMIN(
editedImage->width(),
editedImage->height() );
00131
const int embossRadius = (
int) QMAX( 1, (sqrt(minDimen)/8) );
00132
00133
for( y=0; y<
editedImage->height(); y++)
00134 {
00135 scanLine = originalImage.scanLine(y);
00136
00137
00138 yPrev = QMAX( y-embossRadius, 0 );
00139 yNext = QMIN( y+embossRadius,
editedImage->height() - 1 );
00140
00141
00142
for( x=0; x<
editedImage->width(); x++)
00143 {
00144
00145 xPrev = QMAX( x-embossRadius, 0 );
00146 xNext = QMIN( x+embossRadius,
editedImage->width() - 1 );
00147
00148
00149
int sum = 128;
00150
00151
00152 scanLine = originalImage.scanLine( yPrev );
00153 sum-= qGray( *((QRgb*)scanLine + xPrev ) );
00154 sum-= qGray( *((QRgb*)scanLine + x ) );
00155
00156 scanLine = originalImage.scanLine( y );
00157 sum-= qGray( *((QRgb*)scanLine + xPrev ) );
00158 sum+= qGray( *((QRgb*)scanLine + xNext ) );
00159
00160 scanLine = originalImage.scanLine( yNext );
00161 sum+= qGray( *((QRgb*)scanLine + x ) );
00162 sum+= qGray( *((QRgb*)scanLine + xNext ) );
00163
00164
00165 sum = QMAX( QMIN( sum, 255), 0 );
00166
00167
00168 scanLine =
editedImage->scanLine(y);
00169 rgb = ((QRgb*)scanLine+x);
00170
double r = ((
double)qRed(*rgb) )/255.0;
00171
double g = ((
double)qGreen(*rgb) )/255.0;
00172
double b = ((
double)qBlue(*rgb) )/255.0;
00173
00174
00175
double h,s,v;
00176
RGBtoHSV(r,g,b,&h,&s,&v);
00177
00178
00179 v = ((
double)sum)/255;
00180
00181
00182
HSVtoRGB( &r,&g,&b, h,s,v);
00183
int rp = (
int) QMIN( QMAX((r*255), 0), 255 );
00184
int gp = (
int) QMIN( QMAX((g*255), 0), 255 );
00185
int bp = (
int) QMIN( QMAX((b*255), 0), 255 );
00186
00187
00188 *rgb = qRgb(rp,gp,bp);
00189
00190
00191
if(useBusyIndicators)
00192 {
00193
newProgress++;
00194
if(
newProgress >=
updateIncrement)
00195 {
00196
newProgress = 0;
00197
status->
incrementProgress();
00198 qApp->processEvents();
00199 }
00200 }
00201
00202 }
00203 }
00204
00205
00206
return editedImage;
00207 }