Diffstat (limited to 'libopie2/opieui/opixmapeffect.cpp') (more/less context) (ignore whitespace changes)
| -rw-r--r-- | libopie2/opieui/opixmapeffect.cpp | 328 |
1 files changed, 328 insertions, 0 deletions
diff --git a/libopie2/opieui/opixmapeffect.cpp b/libopie2/opieui/opixmapeffect.cpp new file mode 100644 index 0000000..05f851d --- a/dev/null +++ b/libopie2/opieui/opixmapeffect.cpp @@ -0,0 +1,328 @@ +/* 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> + +*/ + +// $Id$ + +/* QT */ + +#include <qimage.h> +#include <qpainter.h> + +/* OPIE */ + +#include <opie2/opixmapeffect.h> +#include <opie2/oimageeffect.h> + +//====================================================================== +// +// Gradient effects +// +//====================================================================== + + +OPixmap& OPixmapEffect::gradient(OPixmap &pixmap, const QColor &ca, + const QColor &cb, GradientType eff, int ncols) +{ + if(pixmap.depth() > 8 && + (eff == VerticalGradient || eff == HorizontalGradient)) { + + int rDiff, gDiff, bDiff; + int rca, gca, bca /*, rcb, gcb, bcb*/; + + 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()); + + register int rl = rca << 16; + register int gl = gca << 16; + register 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; + + QPainter 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(QColor(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(QColor(rl>>16, gl>>16, bl>>16)); + p.drawLine(x, 0, x, pixmap.height()-1); + } + break; + default: + ; + } + } + else { + QImage image = OImageEffect::gradient(pixmap.size(), ca, cb, + (OImageEffect::GradientType) eff, ncols); + pixmap.convertFromImage(image); + } + + return pixmap; +} + + +// ----------------------------------------------------------------------------- + +OPixmap& OPixmapEffect::unbalancedGradient(OPixmap &pixmap, const QColor &ca, + const QColor &cb, GradientType eff, int xfactor, int yfactor, + int ncols) +{ + QImage image = OImageEffect::unbalancedGradient(pixmap.size(), ca, cb, + (OImageEffect::GradientType) eff, + xfactor, yfactor, ncols); + pixmap.convertFromImage(image); + + return pixmap; +} + + +//====================================================================== +// +// Intensity effects +// +//====================================================================== + + + +OPixmap& OPixmapEffect::intensity(OPixmap &pixmap, float percent) +{ + QImage image = pixmap.convertToImage(); + OImageEffect::intensity(image, percent); + pixmap.convertFromImage(image); + + return pixmap; +} + + +// ----------------------------------------------------------------------------- + +OPixmap& OPixmapEffect::channelIntensity(OPixmap &pixmap, float percent, + RGBComponent channel) +{ + QImage image = pixmap.convertToImage(); + OImageEffect::channelIntensity(image, percent, + (OImageEffect::RGBComponent) channel); + pixmap.convertFromImage(image); + + return pixmap; +} + + +//====================================================================== +// +// Blend effects +// +//====================================================================== + + +OPixmap& OPixmapEffect::blend(OPixmap &pixmap, float initial_intensity, + const QColor &bgnd, GradientType eff, + bool anti_dir, int ncols) +{ + + QImage image = pixmap.convertToImage(); + if (image.depth() <=8) + image = image.convertDepth(32); //Sloww.. + + OImageEffect::blend(image, initial_intensity, bgnd, + (OImageEffect::GradientType) eff, anti_dir); + + unsigned int tmp; + + if(pixmap.depth() <= 8 ) { + if ( ncols < 2 || ncols > 256 ) + ncols = 3; + QColor *dPal = new QColor[ncols]; + for (int i=0; i<ncols; i++) { + tmp = 0 + 255 * i / ( ncols - 1 ); + dPal[i].setRgb ( tmp, tmp, tmp ); + } + OImageEffect::dither(image, dPal, ncols); + pixmap.convertFromImage(image); + delete [] dPal; + } + else + pixmap.convertFromImage(image); + + return pixmap; +} + + +//====================================================================== +// +// Hash effects +// +//====================================================================== + +OPixmap& OPixmapEffect::hash(OPixmap &pixmap, Lighting lite, + unsigned int spacing, int ncols) +{ + QImage image = pixmap.convertToImage(); + OImageEffect::hash(image, (OImageEffect::Lighting) lite, spacing); + + unsigned int tmp; + + if(pixmap.depth() <= 8 ) { + if ( ncols < 2 || ncols > 256 ) + ncols = 3; + QColor *dPal = new QColor[ncols]; + for (int i=0; i<ncols; i++) { + tmp = 0 + 255 * i / ( ncols - 1 ); + dPal[i].setRgb ( tmp, tmp, tmp ); + } + OImageEffect::dither(image, dPal, ncols); + pixmap.convertFromImage(image); + delete [] dPal; + } + else + pixmap.convertFromImage(image); + + return pixmap; +} + + +//====================================================================== +// +// Pattern effects +// +//====================================================================== + +#if 0 +void OPixmapEffect::pattern(OPixmap &pixmap, const QColor &ca, + const QColor &cb, unsigned pat[8]) +{ + QImage img = pattern(pixmap.size(), ca, cb, pat); + pixmap.convertFromImage(img); +} +#endif + +// ----------------------------------------------------------------------------- + +OPixmap OPixmapEffect::pattern(const OPixmap& pmtile, QSize size, + const QColor &ca, const QColor &cb, int ncols) +{ + if (pmtile.depth() > 8) + ncols = 0; + + QImage img = pmtile.convertToImage(); + OImageEffect::flatten(img, ca, cb, ncols); + OPixmap pixmap; + pixmap.convertFromImage(img); + + return OPixmapEffect::createTiled(pixmap, size); +} + + +// ----------------------------------------------------------------------------- + +OPixmap OPixmapEffect::createTiled(const OPixmap& pixmap, QSize size) +{ + OPixmap pix; + + QPainter p(&pix); + p.drawTiledPixmap(0, 0, size.width(), size.height(), pixmap); + + return pix; +} + + +//====================================================================== +// +// Fade effects +// +//====================================================================== + +OPixmap& OPixmapEffect::fade(OPixmap &pixmap, double val, const QColor &color) +{ + QImage img = pixmap.convertToImage(); + OImageEffect::fade(img, val, color); + pixmap.convertFromImage(img); + + return pixmap; +} + + +// ----------------------------------------------------------------------------- +OPixmap& OPixmapEffect::toGray(OPixmap &pixmap, bool fast) +{ + QImage img = pixmap.convertToImage(); + OImageEffect::toGray(img, fast); + pixmap.convertFromImage(img); + + return pixmap; +} + +// ----------------------------------------------------------------------------- +OPixmap& OPixmapEffect::desaturate(OPixmap &pixmap, float desat) +{ + QImage img = pixmap.convertToImage(); + OImageEffect::desaturate(img, desat); + pixmap.convertFromImage(img); + + return pixmap; +} +// ----------------------------------------------------------------------------- +OPixmap& OPixmapEffect::contrast(OPixmap &pixmap, int c) +{ + QImage img = pixmap.convertToImage(); + OImageEffect::contrast(img, c); + pixmap.convertFromImage(img); + + return pixmap; +} + +//====================================================================== +// +// Dither effects +// +//====================================================================== + +// ----------------------------------------------------------------------------- +OPixmap& OPixmapEffect::dither(OPixmap &pixmap, const QColor *palette, int size) +{ + QImage img = pixmap.convertToImage(); + OImageEffect::dither(img, palette, size); + pixmap.convertFromImage(img); + + return pixmap; +} + +//====================================================================== +// +// Other effects +// +//====================================================================== + +OPixmap OPixmapEffect::selectedPixmap( const OPixmap &pix, const QColor &col ) +{ + QImage img = pix.convertToImage(); + OImageEffect::selectedImage(img, col); + OPixmap outPix; + outPix.convertFromImage(img); + return outPix; +} |