1 files changed, 85 insertions, 0 deletions
diff --git a/kwin/clients/plastik/misc.cpp b/kwin/clients/plastik/misc.cpp
new file mode 100644
index 000000000..da491b2ba
--- /dev/null
+++ b/kwin/clients/plastik/misc.cpp
@@ -0,0 +1,85 @@
+/* Plastik KWin window decoration
+  Copyright (C) 2003 Sandro Giessl <ceebx@users.sourceforge.net>
+
+  based on the window decoration "Web":
+  Copyright (C) 2001 Rik Hemsley (rikkus) <rik@kde.org>
+
+  This program is free software; you can redistribute it and/or
+  modify it under the terms of the GNU General Public
+  License as published by the Free Software Foundation; either
+  version 2 of the License, or (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+  General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program; see the file COPYING.  If not, write to
+  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+  Boston, MA 02110-1301, USA.
+ */
+
+#include <kpixmap.h>
+#include <kpixmapeffect.h>
+
+#include <qcolor.h>
+#include <qimage.h>
+#include <qpainter.h>
+
+#include "misc.h"
+
+QColor hsvRelative(const QColor& baseColor, int relativeH, int relativeS, int relativeV)
+{
+    int h, s, v;
+    baseColor.hsv(&h, &s, &v);
+
+    h += relativeH;
+    s += relativeS;
+    v += relativeV;
+
+    if(h < 0) { h = 0; }
+    else if(h > 359) { h = 359; }
+    if(s < 0) { s = 0; }
+    else if(s > 255) { s = 255; }
+    if(v < 0) { v = 0; }
+    else if(v > 255) { v = 255; }
+
+    QColor c;
+    c.setHsv( h, s, v );
+    return c;
+}
+
+QColor alphaBlendColors(const QColor &bgColor, const QColor &fgColor, const int a)
+{
+
+    // normal button...
+    QRgb rgb = bgColor.rgb();
+    QRgb rgb_b = fgColor.rgb();
+    int alpha = a;
+    if(alpha>255) alpha = 255;
+    if(alpha<0) alpha = 0;
+    int inv_alpha = 255 - alpha;
+
+    QColor result  = QColor( qRgb(qRed(rgb_b)*inv_alpha/255 + qRed(rgb)*alpha/255,
+                                  qGreen(rgb_b)*inv_alpha/255 + qGreen(rgb)*alpha/255,
+                                  qBlue(rgb_b)*inv_alpha/255 + qBlue(rgb)*alpha/255) );
+
+    return result;
+}
+
+QImage recolorImage(QImage *img, QColor color) {
+    QImage destImg(img->width(),img->height(),32);
+    destImg.setAlphaBuffer(true);
+    for (int x = 0; x < img->width(); x++) {
+        for (int y = 0; y < img->height(); y++) {
+            if(img->pixel(x,y) == qRgb(0,0,255) ) {
+                destImg.setPixel(x,y,color.rgb() ); // set to the new color
+            } else {
+                destImg.setPixel(x,y,qRgba(0,0,0,0) ); // set transparent...
+            }
+        }
+    }
+
+    return destImg;
+}