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-rw-r--r--noncore/styles/theme/ogfxeffect.cpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/noncore/styles/theme/ogfxeffect.cpp b/noncore/styles/theme/ogfxeffect.cpp
index cc5bbcd..2071a67 100644
--- a/noncore/styles/theme/ogfxeffect.cpp
+++ b/noncore/styles/theme/ogfxeffect.cpp
@@ -1,507 +1,509 @@
/* 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 <qimage.h>
#include <qpainter.h>
#include <qpe/qmath.h>
#include "ogfxeffect.h"
+#include <cstdlib>
+#include <cmath>
//======================================================================
//
// Gradient effects
//
//======================================================================
QPixmap& OGfxEffect::gradient(QPixmap &pixmap, const QColor &ca,
const QColor &cb, GradientType eff, int ncols)
{
QImage image = gradient(pixmap.size(), ca, cb, eff, ncols);
pixmap.convertFromImage(image);
return pixmap;
}
QImage OGfxEffect::gradient(const QSize &size, const QColor &ca,
const QColor &cb, GradientType eff, int /*ncols*/)
{
int rDiff, gDiff, bDiff;
int rca, gca, bca, rcb, gcb, bcb;
QImage image(size, 32);
if (size.width() == 0 || size.height() == 0) {
qDebug ( "WARNING: OGfxEffect::gradient: invalid image" );
return image;
}
register int x, y;
rDiff = (rcb = cb.red()) - (rca = ca.red());
gDiff = (gcb = cb.green()) - (gca = ca.green());
bDiff = (bcb = cb.blue()) - (bca = ca.blue());
if( eff == VerticalGradient || eff == HorizontalGradient ){
uint *p;
uint rgb;
register int rl = rca << 16;
register int gl = gca << 16;
register int bl = bca << 16;
if( eff == VerticalGradient ) {
int rcdelta = ((1<<16) / size.height()) * rDiff;
int gcdelta = ((1<<16) / size.height()) * gDiff;
int bcdelta = ((1<<16) / size.height()) * bDiff;
for ( y = 0; y < size.height(); y++ ) {
p = (uint *) image.scanLine(y);
rl += rcdelta;
gl += gcdelta;
bl += bcdelta;
rgb = qRgb( (rl>>16), (gl>>16), (bl>>16) );
for( x = 0; x < size.width(); x++ ) {
*p = rgb;
p++;
}
}
}
else { // must be HorizontalGradient
unsigned int *o_src = (unsigned int *)image.scanLine(0);
unsigned int *src = o_src;
int rcdelta = ((1<<16) / size.width()) * rDiff;
int gcdelta = ((1<<16) / size.width()) * gDiff;
int bcdelta = ((1<<16) / size.width()) * bDiff;
for( x = 0; x < size.width(); x++) {
rl += rcdelta;
gl += gcdelta;
bl += bcdelta;
*src++ = qRgb( (rl>>16), (gl>>16), (bl>>16));
}
src = o_src;
// Believe it or not, manually copying in a for loop is faster
// than calling memcpy for each scanline (on the order of ms...).
// I think this is due to the function call overhead (mosfet).
for (y = 1; y < size.height(); ++y) {
p = (unsigned int *)image.scanLine(y);
src = o_src;
for(x=0; x < size.width(); ++x)
*p++ = *src++;
}
}
}
else {
float rfd, gfd, bfd;
float rd = rca, gd = gca, bd = bca;
unsigned char *xtable[3];
unsigned char *ytable[3];
unsigned int w = size.width(), h = size.height();
xtable[0] = new unsigned char[w];
xtable[1] = new unsigned char[w];
xtable[2] = new unsigned char[w];
ytable[0] = new unsigned char[h];
ytable[1] = new unsigned char[h];
ytable[2] = new unsigned char[h];
w*=2, h*=2;
if ( eff == DiagonalGradient || eff == CrossDiagonalGradient) {
// Diagonal dgradient code inspired by BlackBox (mosfet)
// BlackBox dgradient is (C) Brad Hughes, <bhughes@tcac.net> and
// Mike Cole <mike@mydot.com>.
rfd = (float)rDiff/w;
gfd = (float)gDiff/w;
bfd = (float)bDiff/w;
int dir;
for (x = 0; x < size.width(); x++, rd+=rfd, gd+=gfd, bd+=bfd) {
dir = eff == DiagonalGradient? x : size.width() - x - 1;
xtable[0][dir] = (unsigned char) rd;
xtable[1][dir] = (unsigned char) gd;
xtable[2][dir] = (unsigned char) bd;
}
rfd = (float)rDiff/h;
gfd = (float)gDiff/h;
bfd = (float)bDiff/h;
rd = gd = bd = 0;
for (y = 0; y < size.height(); y++, rd+=rfd, gd+=gfd, bd+=bfd) {
ytable[0][y] = (unsigned char) rd;
ytable[1][y] = (unsigned char) gd;
ytable[2][y] = (unsigned char) bd;
}
for (y = 0; y < size.height(); y++) {
unsigned int *scanline = (unsigned int *)image.scanLine(y);
for (x = 0; x < size.width(); x++) {
scanline[x] = qRgb(xtable[0][x] + ytable[0][y],
xtable[1][x] + ytable[1][y],
xtable[2][x] + ytable[2][y]);
}
}
}
else if (eff == RectangleGradient ||
eff == PyramidGradient ||
eff == PipeCrossGradient ||
eff == EllipticGradient)
{
int rSign = rDiff>0? 1: -1;
int gSign = gDiff>0? 1: -1;
int bSign = bDiff>0? 1: -1;
rfd = (float)rDiff / size.width();
gfd = (float)gDiff / size.width();
bfd = (float)bDiff / size.width();
rd = (float)rDiff/2;
gd = (float)gDiff/2;
bd = (float)bDiff/2;
for (x = 0; x < size.width(); x++, rd-=rfd, gd-=gfd, bd-=bfd)
{
xtable[0][x] = (unsigned char) abs((int)rd);
xtable[1][x] = (unsigned char) abs((int)gd);
xtable[2][x] = (unsigned char) abs((int)bd);
}
rfd = (float)rDiff/size.height();
gfd = (float)gDiff/size.height();
bfd = (float)bDiff/size.height();
rd = (float)rDiff/2;
gd = (float)gDiff/2;
bd = (float)bDiff/2;
for (y = 0; y < size.height(); y++, rd-=rfd, gd-=gfd, bd-=bfd)
{
ytable[0][y] = (unsigned char) abs((int)rd);
ytable[1][y] = (unsigned char) abs((int)gd);
ytable[2][y] = (unsigned char) abs((int)bd);
}
unsigned int rgb;
int h = (size.height()+1)>>1;
for (y = 0; y < h; y++) {
unsigned int *sl1 = (unsigned int *)image.scanLine(y);
unsigned int *sl2 = (unsigned int *)image.scanLine(QMAX(size.height()-y-1, y));
int w = (size.width()+1)>>1;
int x2 = size.width()-1;
for (x = 0; x < w; x++, x2--) {
rgb = 0;
if (eff == PyramidGradient) {
rgb = qRgb(rcb-rSign*(xtable[0][x]+ytable[0][y]),
gcb-gSign*(xtable[1][x]+ytable[1][y]),
bcb-bSign*(xtable[2][x]+ytable[2][y]));
}
if (eff == RectangleGradient) {
rgb = qRgb(rcb - rSign *
QMAX(xtable[0][x], ytable[0][y]) * 2,
gcb - gSign *
QMAX(xtable[1][x], ytable[1][y]) * 2,
bcb - bSign *
QMAX(xtable[2][x], ytable[2][y]) * 2);
}
if (eff == PipeCrossGradient) {
rgb = qRgb(rcb - rSign *
QMIN(xtable[0][x], ytable[0][y]) * 2,
gcb - gSign *
QMIN(xtable[1][x], ytable[1][y]) * 2,
bcb - bSign *
QMIN(xtable[2][x], ytable[2][y]) * 2);
}
if (eff == EllipticGradient) {
rgb = qRgb(rcb - rSign *
(int)sqrt((xtable[0][x]*xtable[0][x] +
ytable[0][y]*ytable[0][y])*2.0),
gcb - gSign *
(int)sqrt((xtable[1][x]*xtable[1][x] +
ytable[1][y]*ytable[1][y])*2.0),
bcb - bSign *
(int)sqrt((xtable[2][x]*xtable[2][x] +
ytable[2][y]*ytable[2][y])*2.0));
}
sl1[x] = sl2[x] = rgb;
sl1[x2] = sl2[x2] = rgb;
}
}
}
delete [] xtable[0];
delete [] xtable[1];
delete [] xtable[2];
delete [] ytable[0];
delete [] ytable[1];
delete [] ytable[2];
}
return image;
}
//======================================================================
//
// Blend effects
//
//======================================================================
QPixmap& OGfxEffect::blend(QPixmap &pixmap, float initial_intensity,
const QColor &bgnd, GradientType eff,
bool anti_dir, int /*ncols*/)
{
QImage image = pixmap.convertToImage();
OGfxEffect::blend(image, initial_intensity, bgnd, eff, anti_dir);
if ( pixmap. depth ( ) <= 8 )
image. convertDepth ( pixmap. depth ( ));
pixmap.convertFromImage(image);
return pixmap;
}
QImage& OGfxEffect::blend(QImage &image, float initial_intensity,
const QColor &bgnd, GradientType eff,
bool anti_dir)
{
if (image.width() == 0 || image.height() == 0) {
qDebug ( "Invalid image\n" );
return image;
}
int r_bgnd = bgnd.red(), g_bgnd = bgnd.green(), b_bgnd = bgnd.blue();
int r, g, b;
int ind;
unsigned int xi, xf, yi, yf;
unsigned int a;
// check the boundaries of the initial intesity param
float unaffected = 1;
if (initial_intensity > 1) initial_intensity = 1;
if (initial_intensity < -1) initial_intensity = -1;
if (initial_intensity < 0) {
unaffected = 1. + initial_intensity;
initial_intensity = 0;
}
float intensity = initial_intensity;
float var = 1. - initial_intensity;
if (anti_dir) {
initial_intensity = intensity = 1.;
var = -var;
}
register int x, y;
unsigned int *data = (unsigned int *)image.bits();
if( eff == VerticalGradient || eff == HorizontalGradient ) {
// set the image domain to apply the effect to
xi = 0, xf = image.width();
yi = 0, yf = image.height();
if (eff == VerticalGradient) {
if (anti_dir) yf = (int)(image.height() * unaffected);
else yi = (int)(image.height() * (1 - unaffected));
}
else {
if (anti_dir) xf = (int)(image.width() * unaffected);
else xi = (int)(image.height() * (1 - unaffected));
}
var /= (eff == VerticalGradient?yf-yi:xf-xi);
for (y = yi; y < (int)yf; y++) {
intensity = eff == VerticalGradient? intensity + var :
initial_intensity;
for (x = xi; x < (int)xf ; x++) {
if (eff == HorizontalGradient) intensity += var;
ind = x + image.width() * y ;
r = qRed (data[ind]) + (int)(intensity *
(r_bgnd - qRed (data[ind])));
g = qGreen(data[ind]) + (int)(intensity *
(g_bgnd - qGreen(data[ind])));
b = qBlue (data[ind]) + (int)(intensity *
(b_bgnd - qBlue (data[ind])));
if (r > 255) r = 255; if (r < 0 ) r = 0;
if (g > 255) g = 255; if (g < 0 ) g = 0;
if (b > 255) b = 255; if (b < 0 ) b = 0;
a = qAlpha(data[ind]);
data[ind] = qRgba(r, g, b, a);
}
}
}
else if (eff == DiagonalGradient || eff == CrossDiagonalGradient) {
float xvar = var / 2 / image.width(); // / unaffected;
float yvar = var / 2 / image.height(); // / unaffected;
float tmp;
for (x = 0; x < image.width() ; x++) {
tmp = xvar * (eff == DiagonalGradient? x : image.width()-x-1);
for (y = 0; y < image.height() ; y++) {
intensity = initial_intensity + tmp + yvar * y;
ind = x + image.width() * y ;
r = qRed (data[ind]) + (int)(intensity *
(r_bgnd - qRed (data[ind])));
g = qGreen(data[ind]) + (int)(intensity *
(g_bgnd - qGreen(data[ind])));
b = qBlue (data[ind]) + (int)(intensity *
(b_bgnd - qBlue (data[ind])));
if (r > 255) r = 255; if (r < 0 ) r = 0;
if (g > 255) g = 255; if (g < 0 ) g = 0;
if (b > 255) b = 255; if (b < 0 ) b = 0;
a = qAlpha(data[ind]);
data[ind] = qRgba(r, g, b, a);
}
}
}
else if (eff == RectangleGradient || eff == EllipticGradient) {
float xvar;
float yvar;
for (x = 0; x < image.width() / 2 + image.width() % 2; x++) {
xvar = var / image.width() * (image.width() - x*2/unaffected-1);
for (y = 0; y < image.height() / 2 + image.height() % 2; y++) {
yvar = var / image.height() * (image.height() - y*2/unaffected -1);
if (eff == RectangleGradient)
intensity = initial_intensity + QMAX(xvar, yvar);
else
intensity = initial_intensity + qSqrt(xvar * xvar + yvar * yvar);
if (intensity > 1) intensity = 1;
if (intensity < 0) intensity = 0;
//NW
ind = x + image.width() * y ;
r = qRed (data[ind]) + (int)(intensity *
(r_bgnd - qRed (data[ind])));
g = qGreen(data[ind]) + (int)(intensity *
(g_bgnd - qGreen(data[ind])));
b = qBlue (data[ind]) + (int)(intensity *
(b_bgnd - qBlue (data[ind])));
if (r > 255) r = 255; if (r < 0 ) r = 0;
if (g > 255) g = 255; if (g < 0 ) g = 0;
if (b > 255) b = 255; if (b < 0 ) b = 0;
a = qAlpha(data[ind]);
data[ind] = qRgba(r, g, b, a);
//NE
ind = image.width() - x - 1 + image.width() * y ;
r = qRed (data[ind]) + (int)(intensity *
(r_bgnd - qRed (data[ind])));
g = qGreen(data[ind]) + (int)(intensity *
(g_bgnd - qGreen(data[ind])));
b = qBlue (data[ind]) + (int)(intensity *
(b_bgnd - qBlue (data[ind])));
if (r > 255) r = 255; if (r < 0 ) r = 0;
if (g > 255) g = 255; if (g < 0 ) g = 0;
if (b > 255) b = 255; if (b < 0 ) b = 0;
a = qAlpha(data[ind]);
data[ind] = qRgba(r, g, b, a);
}
}
//CT loop is doubled because of stupid central row/column issue.
// other solution?
for (x = 0; x < image.width() / 2; x++) {
xvar = var / image.width() * (image.width() - x*2/unaffected-1);
for (y = 0; y < image.height() / 2; y++) {
yvar = var / image.height() * (image.height() - y*2/unaffected -1);
if (eff == RectangleGradient)
intensity = initial_intensity + QMAX(xvar, yvar);
else
intensity = initial_intensity + qSqrt(xvar * xvar + yvar * yvar);
if (intensity > 1) intensity = 1;
if (intensity < 0) intensity = 0;
//SW
ind = x + image.width() * (image.height() - y -1) ;
r = qRed (data[ind]) + (int)(intensity *
(r_bgnd - qRed (data[ind])));
g = qGreen(data[ind]) + (int)(intensity *
(g_bgnd - qGreen(data[ind])));
b = qBlue (data[ind]) + (int)(intensity *
(b_bgnd - qBlue (data[ind])));
if (r > 255) r = 255; if (r < 0 ) r = 0;
if (g > 255) g = 255; if (g < 0 ) g = 0;
if (b > 255) b = 255; if (b < 0 ) b = 0;
a = qAlpha(data[ind]);
data[ind] = qRgba(r, g, b, a);
//SE
ind = image.width()-x-1 + image.width() * (image.height() - y - 1) ;
r = qRed (data[ind]) + (int)(intensity *
(r_bgnd - qRed (data[ind])));
g = qGreen(data[ind]) + (int)(intensity *
(g_bgnd - qGreen(data[ind])));
b = qBlue (data[ind]) + (int)(intensity *
(b_bgnd - qBlue (data[ind])));
if (r > 255) r = 255; if (r < 0 ) r = 0;
if (g > 255) g = 255; if (g < 0 ) g = 0;
if (b > 255) b = 255; if (b < 0 ) b = 0;
a = qAlpha(data[ind]);
data[ind] = qRgba(r, g, b, a);
}
}
}
else
qDebug ( "not implemented\n" );
return image;
}
#if 0
// Not very efficient as we create a third big image...
//
QImage& KQGfxEffect::blend(QImage &image1, QImage &image2,
GradientType gt, int xf, int yf)
{
if (image1.width() == 0 || image1.height() == 0 ||
image2.width() == 0 || image2.height() == 0)
return image1;
QImage image3;
image3 = KQGfxEffect::unbalancedGradient(image1.size(),
QColor(0,0,0), QColor(255,255,255),
gt, xf, yf, 0);
return blend(image1,image2,image3, Red); // Channel to use is arbitrary
}
#endif