diff options
Diffstat (limited to 'ui/qt/color_utils.cpp')
| -rw-r--r-- | ui/qt/color_utils.cpp | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/ui/qt/color_utils.cpp b/ui/qt/color_utils.cpp index 0603a26b98..4210d29734 100644 --- a/ui/qt/color_utils.cpp +++ b/ui/qt/color_utils.cpp @@ -60,6 +60,26 @@ QColor ColorUtils::fromColorT(color_t color) return fromColorT(&color); } +QRgb ColorUtils::alphaBlend(const QColor &color1, const QColor &color2, qreal alpha) +{ + alpha = qBound(0.0, alpha, 1.0); + + int r1 = color1.red() * alpha; + int g1 = color1.green() * alpha; + int b1 = color1.blue() * alpha; + int r2 = color2.red() * (1 - alpha); + int g2 = color2.green() * (1 - alpha); + int b2 = color2.blue() * (1 - alpha); + + QColor alpha_color(r1 + r2, g1 + g2, b1 + b2); + return alpha_color.rgb(); +} + +QRgb ColorUtils::alphaBlend(const QBrush &brush1, const QBrush &brush2, qreal alpha) +{ + return alphaBlend(brush1.color(), brush2.color(), alpha); +} + /* * Editor modelines * |