From 7f408ad635a5e2a7829db68c19e51a295d55b9d1 Mon Sep 17 00:00:00 2001 From: Mavridis Philippe Date: Sun, 10 Mar 2024 17:53:54 +0200 Subject: Imported from Pling --- style/misc.cpp | 38 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100755 style/misc.cpp (limited to 'style/misc.cpp') diff --git a/style/misc.cpp b/style/misc.cpp new file mode 100755 index 0000000..2f1d30c --- /dev/null +++ b/style/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., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, 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