From ce4a32fe52ef09d8f5ff1dd22c001110902b60a2 Mon Sep 17 00:00:00 2001 From: toma Date: Wed, 25 Nov 2009 17:56:58 +0000 Subject: Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features. BUG:215923 git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdelibs@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da --- kstyles/plastik/misc.cpp | 38 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 kstyles/plastik/misc.cpp (limited to 'kstyles/plastik/misc.cpp') diff --git a/kstyles/plastik/misc.cpp b/kstyles/plastik/misc.cpp new file mode 100644 index 000000000..5eddf5ad2 --- /dev/null +++ b/kstyles/plastik/misc.cpp @@ -0,0 +1,38 @@ +/* + * Copyright 2003, Sandro Giessl + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License version 2 as published by the Free Software Foundation. + * + * This library 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 + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public License + * along with this library; see the file COPYING.LIB. If not, write to + * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. + */ + +#include +#include "misc.h" + +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; +} -- cgit v1.2.1