326 lines
8.9 KiB
326 lines
8.9 KiB
/* This file is part of the KDE libraries
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Copyright (C) 1998, 1999 Christian Tibirna <ctibirna@total.net>
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(C) 1998, 1999 Daniel M. Duley <mosfet@kde.org>
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(C) 1998, 1999 Dirk A. Mueller <mueller@kde.org>
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*/
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// $Id$
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#include <tqimage.h>
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#include <tqpainter.h>
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#include "kpixmapeffect.h"
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#include "kpixmap.h"
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#include "kimageeffect.h"
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//======================================================================
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//
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// Gradient effects
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//
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//======================================================================
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KPixmap& KPixmapEffect::gradient(KPixmap &pixmap, const TQColor &ca,
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const TQColor &cb, GradientType eff, int ncols)
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{
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if(pixmap.depth() > 8 &&
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(eff == VerticalGradient || eff == HorizontalGradient)) {
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int rDiff, gDiff, bDiff;
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int rca, gca, bca /*, rcb, gcb, bcb*/;
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int x, y;
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rDiff = (/*rcb = */ cb.red()) - (rca = ca.red());
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gDiff = (/*gcb = */ cb.green()) - (gca = ca.green());
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bDiff = (/*bcb = */ cb.blue()) - (bca = ca.blue());
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int rl = rca << 16;
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int gl = gca << 16;
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int bl = bca << 16;
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int rcdelta = ((1<<16) / (eff == VerticalGradient ? pixmap.height() : pixmap.width())) * rDiff;
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int gcdelta = ((1<<16) / (eff == VerticalGradient ? pixmap.height() : pixmap.width())) * gDiff;
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int bcdelta = ((1<<16) / (eff == VerticalGradient ? pixmap.height() : pixmap.width())) * bDiff;
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TQPainter p(&pixmap);
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// these for-loops could be merged, but the if's in the inner loop
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// would make it slow
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switch(eff) {
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case VerticalGradient:
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for ( y = 0; y < pixmap.height(); y++ ) {
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rl += rcdelta;
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gl += gcdelta;
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bl += bcdelta;
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p.setPen(TQColor(rl>>16, gl>>16, bl>>16));
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p.drawLine(0, y, pixmap.width()-1, y);
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}
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break;
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case HorizontalGradient:
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for( x = 0; x < pixmap.width(); x++) {
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rl += rcdelta;
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gl += gcdelta;
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bl += bcdelta;
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p.setPen(TQColor(rl>>16, gl>>16, bl>>16));
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p.drawLine(x, 0, x, pixmap.height()-1);
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}
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break;
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default:
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;
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}
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}
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else {
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TQImage image = KImageEffect::gradient(pixmap.size(), ca, cb,
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(KImageEffect::GradientType) eff, ncols);
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pixmap.convertFromImage(image);
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}
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return pixmap;
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}
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// -----------------------------------------------------------------------------
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KPixmap& KPixmapEffect::unbalancedGradient(KPixmap &pixmap, const TQColor &ca,
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const TQColor &cb, GradientType eff, int xfactor, int yfactor,
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int ncols)
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{
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TQImage image = KImageEffect::unbalancedGradient(pixmap.size(), ca, cb,
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(KImageEffect::GradientType) eff,
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xfactor, yfactor, ncols);
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pixmap.convertFromImage(image);
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return pixmap;
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}
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//======================================================================
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//
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// Intensity effects
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//
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//======================================================================
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KPixmap& KPixmapEffect::intensity(KPixmap &pixmap, float percent)
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{
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TQImage image = pixmap.convertToImage();
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KImageEffect::intensity(image, percent);
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pixmap.convertFromImage(image);
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return pixmap;
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}
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// -----------------------------------------------------------------------------
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KPixmap& KPixmapEffect::channelIntensity(KPixmap &pixmap, float percent,
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RGBComponent channel)
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{
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TQImage image = pixmap.convertToImage();
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KImageEffect::channelIntensity(image, percent,
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(KImageEffect::RGBComponent) channel);
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pixmap.convertFromImage(image);
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return pixmap;
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}
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//======================================================================
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//
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// Blend effects
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//
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//======================================================================
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KPixmap& KPixmapEffect::blend(KPixmap &pixmap, float initial_intensity,
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const TQColor &bgnd, GradientType eff,
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bool anti_dir, int ncols)
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{
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TQImage image = pixmap.convertToImage();
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if (image.depth() <=8)
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image = image.convertDepth(32); //Sloww..
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KImageEffect::blend(image, initial_intensity, bgnd,
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(KImageEffect::GradientType) eff, anti_dir);
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unsigned int tmp;
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if(pixmap.depth() <= 8 ) {
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if ( ncols < 2 || ncols > 256 )
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ncols = 3;
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TQColor *dPal = new TQColor[ncols];
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for (int i=0; i<ncols; i++) {
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tmp = 0 + 255 * i / ( ncols - 1 );
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dPal[i].setRgb ( tmp, tmp, tmp );
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}
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KImageEffect::dither(image, dPal, ncols);
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pixmap.convertFromImage(image);
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delete [] dPal;
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}
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else
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pixmap.convertFromImage(image);
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return pixmap;
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}
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//======================================================================
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//
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// Hash effects
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//
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//======================================================================
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KPixmap& KPixmapEffect::hash(KPixmap &pixmap, Lighting lite,
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unsigned int spacing, int ncols)
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{
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TQImage image = pixmap.convertToImage();
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KImageEffect::hash(image, (KImageEffect::Lighting) lite, spacing);
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unsigned int tmp;
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if(pixmap.depth() <= 8 ) {
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if ( ncols < 2 || ncols > 256 )
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ncols = 3;
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TQColor *dPal = new TQColor[ncols];
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for (int i=0; i<ncols; i++) {
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tmp = 0 + 255 * i / ( ncols - 1 );
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dPal[i].setRgb ( tmp, tmp, tmp );
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}
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KImageEffect::dither(image, dPal, ncols);
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pixmap.convertFromImage(image);
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delete [] dPal;
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}
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else
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pixmap.convertFromImage(image);
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return pixmap;
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}
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//======================================================================
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//
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// Pattern effects
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//
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//======================================================================
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#if 0
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void KPixmapEffect::pattern(KPixmap &pixmap, const TQColor &ca,
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const TQColor &cb, unsigned pat[8])
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{
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TQImage img = pattern(pixmap.size(), ca, cb, pat);
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pixmap.convertFromImage(img);
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}
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#endif
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// -----------------------------------------------------------------------------
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KPixmap KPixmapEffect::pattern(const KPixmap& pmtile, TQSize size,
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const TQColor &ca, const TQColor &cb, int ncols)
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{
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if (pmtile.depth() > 8)
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ncols = 0;
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TQImage img = pmtile.convertToImage();
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KImageEffect::flatten(img, ca, cb, ncols);
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KPixmap pixmap;
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pixmap.convertFromImage(img);
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return KPixmapEffect::createTiled(pixmap, size);
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}
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// -----------------------------------------------------------------------------
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KPixmap KPixmapEffect::createTiled(const KPixmap& pixmap, TQSize size)
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{
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KPixmap pix(size);
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TQPainter p(&pix);
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p.drawTiledPixmap(0, 0, size.width(), size.height(), pixmap);
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return pix;
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}
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//======================================================================
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//
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// Fade effects
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//
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//======================================================================
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KPixmap& KPixmapEffect::fade(KPixmap &pixmap, double val, const TQColor &color)
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{
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TQImage img = pixmap.convertToImage();
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KImageEffect::fade(img, val, color);
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pixmap.convertFromImage(img);
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return pixmap;
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}
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// -----------------------------------------------------------------------------
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KPixmap& KPixmapEffect::toGray(KPixmap &pixmap, bool fast)
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{
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TQImage img = pixmap.convertToImage();
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KImageEffect::toGray(img, fast);
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pixmap.convertFromImage(img);
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return pixmap;
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}
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// -----------------------------------------------------------------------------
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KPixmap& KPixmapEffect::desaturate(KPixmap &pixmap, float desat)
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{
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TQImage img = pixmap.convertToImage();
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KImageEffect::desaturate(img, desat);
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pixmap.convertFromImage(img);
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return pixmap;
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}
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// -----------------------------------------------------------------------------
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KPixmap& KPixmapEffect::contrast(KPixmap &pixmap, int c)
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{
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TQImage img = pixmap.convertToImage();
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KImageEffect::contrast(img, c);
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pixmap.convertFromImage(img);
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return pixmap;
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}
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//======================================================================
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//
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// Dither effects
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//
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//======================================================================
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// -----------------------------------------------------------------------------
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KPixmap& KPixmapEffect::dither(KPixmap &pixmap, const TQColor *palette, int size)
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{
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TQImage img = pixmap.convertToImage();
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KImageEffect::dither(img, palette, size);
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pixmap.convertFromImage(img);
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return pixmap;
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}
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//======================================================================
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//
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// Other effects
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//
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//======================================================================
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KPixmap KPixmapEffect::selectedPixmap( const KPixmap &pix, const TQColor &col )
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{
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TQImage img = pix.convertToImage();
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KImageEffect::selectedImage(img, col);
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KPixmap outPix;
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outPix.convertFromImage(img);
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return outPix;
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}
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