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Diffstat (limited to 'src/misc.cpp')
-rw-r--r-- | src/misc.cpp | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/src/misc.cpp b/src/misc.cpp new file mode 100644 index 0000000..966f7b1 --- /dev/null +++ b/src/misc.cpp @@ -0,0 +1,86 @@ +/* SuSE KWin window decoration + Copyright (C) 2005 Adrian Schroeter <[email protected]> + + based on the window decoration "Plastik" and "Web": + Copyright (C) 2003 Sandro Giessl <[email protected]> + Copyright (C) 2001 Rik Hemsley (rikkus) <[email protected]> + + 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 St, 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(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(0,0,0)) { + 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; +} |