You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
39 lines
1.4 KiB
39 lines
1.4 KiB
/*
|
|
* Copyright 2003, Sandro Giessl <ceebx@users.sourceforge.net>
|
|
*
|
|
* 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 <tqcolor.h>
|
|
#include "misc.h"
|
|
|
|
TQColor alphaBlendColors(const TQColor &bgColor, const TQColor &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;
|
|
|
|
TQColor result = TQColor( tqRgb(tqRed(rgb_b)*inv_alpha/255 + tqRed(rgb)*alpha/255,
|
|
tqGreen(rgb_b)*inv_alpha/255 + tqGreen(rgb)*alpha/255,
|
|
tqBlue(rgb_b)*inv_alpha/255 + tqBlue(rgb)*alpha/255) );
|
|
|
|
return result;
|
|
}
|