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