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;
+}