From 9b71307d499924834d029adc91baf9689bfa49fd Mon Sep 17 00:00:00 2001 From: Andreas Kling Date: Tue, 19 Feb 2019 01:42:53 +0100 Subject: WindowServer: Support windows with alpha channels. And per-WSWindow opacity. This patch also adds a Format concept to GraphicsBitmap. For now there are only two formats: RGB32 and RGBA32. Windows with alpha channel have their backing stores created in the RGBA32 format. Use this to make Terminal windows semi-transparent for that comfy rice look. There is one problem here, in that window compositing overdraw incurs multiple passes of blending of the same pixels. This leads to a mismatch in opacity which is obviously not good. I will work on this in a later patch. The alpha blending is currently straight C++. It should be relatively easy to optimize this using SSE instructions. For now I'm just happy with the cute effect. :^) --- LibGUI/GWidget.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'LibGUI/GWidget.h') diff --git a/LibGUI/GWidget.h b/LibGUI/GWidget.h index 5b5cb957d5..f3211e6c6b 100644 --- a/LibGUI/GWidget.h +++ b/LibGUI/GWidget.h @@ -128,8 +128,8 @@ private: OwnPtr m_layout; Rect m_relative_rect; - Color m_background_color { 0xffffff }; - Color m_foreground_color { 0x000000 }; + Color m_background_color; + Color m_foreground_color; RetainPtr m_font; SizePolicy m_horizontal_size_policy { SizePolicy::Fill }; -- cgit v1.2.3