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#include <qimage.h>
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#include <qstring.h>
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#include <qapplication.h>
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#include <math.h>
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#include "painting.h"
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#include "manipulationOptions.h"
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#include "../../gui/statusWidget.h"
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00058
00059 struct Triplet
00060 {
int r,
g,
b; };
00061
00062 struct Histogram
00063 {
00064
00065 Triplet values[256];
00066
00067
00068 Triplet highestCountIndex;
00069 };
00070
00071 Histogram histogram;
00072
00073 void resetHistogram()
00074 {
00075
static int i;
00076
for(i=0;i<256;i++)
00077 {
00078
histogram.
values[i].
r = 0;
00079
histogram.
values[i].
g = 0;
00080
histogram.
values[i].
b = 0;
00081 }
00082
histogram.
highestCountIndex.
r = 0;
00083
histogram.
highestCountIndex.
g = 0;
00084
histogram.
highestCountIndex.
b = 0;
00085 }
00086
00087 void findHighestCounts()
00088 {
00089
static int i;
00090
for(i = 1; i<256; i++)
00091 {
00092
if(
histogram.
values[i].
r >
histogram.
values[
histogram.
highestCountIndex.
r ].
r )
00093 {
histogram.
highestCountIndex.
r = i; }
00094
00095
if(
histogram.
values[i].
g >
histogram.
values[
histogram.
highestCountIndex.
g ].
g )
00096 {
histogram.
highestCountIndex.
g = i; }
00097
00098
if(
histogram.
values[i].
b >
histogram.
values[
histogram.
highestCountIndex.
b ].
b )
00099 {
histogram.
highestCountIndex.
b = i; }
00100 }
00101 }
00102
00103 QImage*
oilPaintingEffect( QString filename,
ManipulationOptions* options )
00104 {
00105
00106 QImage originalImage( filename );
00107
00108
00109
if( originalImage.depth() < 32 ) { originalImage = originalImage.convertDepth( 32, Qt::AutoColor ); }
00110
00111
00112
bool useBusyIndicators =
false;
00113
StatusWidget*
status = NULL;
00114
if( options != NULL && options->
getStatus() != NULL )
00115 {
00116 useBusyIndicators =
true;
00117
status = options->
getStatus();
00118 }
00119
00120
00121
if(useBusyIndicators)
00122 {
00123 QString statusMessage = qApp->translate(
"oilPaintingEffect",
"Applying Oil Painting Effect:" );
00124
status->
showProgressBar( statusMessage, 100 );
00125 qApp->processEvents();
00126 }
00127
00128
00129
const int updateIncrement = (
int) ( 0.01 * originalImage.width() * originalImage.height() );
00130
int newProgress = 0;
00131
00132
00133 QImage*
editedImage =
new QImage( filename );
00134
00135
00136
if(
editedImage->depth() < 32 )
00137 {
00138 QImage* tmp =
editedImage;
00139
editedImage =
new QImage( tmp->convertDepth( 32, Qt::AutoColor ) );
00140
delete tmp; tmp=NULL;
00141 }
00142
00143
00144
double minDimen = (
double) QMIN(
editedImage->width(),
editedImage->height() );
00145
const int RADIUS = (
int) QMAX( 2, (sqrt(minDimen)/4) );
00146
00147
00148
int originalImageX, originalImageY;
00149
int editedImageX, editedImageY;
00150
int clampedX, clampedY;
00151
int trailingEdgeY, leadingEdgeY;
00152
00153 QRgb* rgb;
00154 uchar* scanLine;
00155 uchar* trailingScanLine;
00156 uchar* leadingScanLine;
00157
00158
00159
for( editedImageX=0; editedImageX <
editedImage->width(); editedImageX++)
00160 {
00161
00162
00163
resetHistogram();
00164
00165
00166
for(originalImageY = 0 - 1 - RADIUS;
00167 originalImageY <= 0 - 1 + RADIUS;
00168 originalImageY++)
00169 {
00170 clampedY = QMAX( QMIN( originalImageY, originalImage.height() - 1 ), 0 );
00171 scanLine = originalImage.scanLine( clampedY );
00172
00173
for(originalImageX = editedImageX - RADIUS;
00174 originalImageX <= editedImageX + RADIUS;
00175 originalImageX++)
00176 {
00177 clampedX = QMAX( QMIN( originalImageX, originalImage.width() - 1 ), 0 );
00178
00179
00180 rgb = ((QRgb*)scanLine+clampedX);
00181
00182
00183
histogram.
values[ qRed(*rgb) ].
r++;
00184
histogram.
values[ qGreen(*rgb) ].
g++;
00185
histogram.
values[ qBlue(*rgb) ].
b++;
00186 }
00187 }
00188
00189
00190
00191
for( editedImageY=0; editedImageY <
editedImage->height(); editedImageY++)
00192 {
00193 trailingEdgeY = QMAX( QMIN( editedImageY-1-RADIUS, originalImage.height() - 1 ), 0 );
00194 leadingEdgeY = QMAX( QMIN( editedImageY+RADIUS, originalImage.height() - 1 ), 0 );
00195
00196 trailingScanLine = originalImage.scanLine( trailingEdgeY );
00197 leadingScanLine = originalImage.scanLine( leadingEdgeY );
00198
00199
for(originalImageX = editedImageX - RADIUS;
00200 originalImageX <= editedImageX + RADIUS;
00201 originalImageX++)
00202 {
00203 clampedX = QMAX( QMIN( originalImageX, originalImage.width() - 1 ), 0 );
00204
00205
00206 rgb = ((QRgb*)trailingScanLine+clampedX);
00207
histogram.
values[ qRed(*rgb) ].
r--;
00208
histogram.
values[ qGreen(*rgb) ].
g--;
00209
histogram.
values[ qBlue(*rgb) ].
b--;
00210
00211
00212 rgb = ((QRgb*)leadingScanLine+clampedX);
00213
histogram.
values[ qRed(*rgb) ].
r++;
00214
histogram.
values[ qGreen(*rgb) ].
g++;
00215
histogram.
values[ qBlue(*rgb) ].
b++;
00216 }
00217
00218
00219
findHighestCounts();
00220
00221
00222
00223 scanLine =
editedImage->scanLine( editedImageY );
00224 rgb = ((QRgb*)scanLine+editedImageX);
00225 *rgb = qRgb( (qRed(*rgb) +
histogram.
highestCountIndex.
r) / 2,
00226 (qGreen(*rgb) +
histogram.
highestCountIndex.
g) / 2,
00227 (qBlue(*rgb) +
histogram.
highestCountIndex.
b) / 2 );
00228
00229
00230
00231
if(useBusyIndicators)
00232 {
00233
newProgress++;
00234
if(
newProgress >=
updateIncrement)
00235 {
00236
newProgress = 0;
00237
status->
incrementProgress();
00238 qApp->processEvents();
00239 }
00240 }
00241
00242 }
00243 }
00244
00245
00246
return editedImage;
00247 }
00248