Index: docs/linux_gtk_theme_integration.md |
diff --git a/docs/linux_gtk_theme_integration.md b/docs/linux_gtk_theme_integration.md |
index 1fe912a26f4f0b9812acfaeeedf6f44b43f1306c..caf0941993c8d475982bb5a20639f221beb8a1ab 100644 |
--- a/docs/linux_gtk_theme_integration.md |
+++ b/docs/linux_gtk_theme_integration.md |
@@ -16,24 +16,18 @@ mostly a list of about 80 colors (see //src/ui/native_theme/native_theme.h) |
overridden by the theme. Chromium usually doesn't use GTK to render entire |
widgets, but instead tries to determine colors from them. |
-There are three types of colors Chromium needs from widgets: |
- |
-* Foreground color: determined by the CSS "color" property |
-* Background color: determined by the CSS "background-color" and "background-image" properties |
-* Border color: determined by the "border-color", "border-image", |
- "border-style", and "border-width" properties |
- |
-Backgrounds and borders are complicated because in general they might have |
-multiple gradients or images. To get the color, Chromium uses GTK to render the |
-background or border into a single pixel and uses the resulting color for |
-theming. This mostly gives reasonable results, but in case theme authors do not |
-like the resulting color, they have the option to theme Chromium widgets |
-specially. |
+Chromium needs foreground, background and border colors from widgets. The |
+foreground color is simply taken from the CSS "color" property. Backgrounds and |
+borders are complicated because in general they might have multiple gradients or |
+images. To get the color, Chromium uses GTK to render the background or border |
+into a 24x24 bitmap and uses the average color for theming. This mostly gives |
+reasonable results, but in case theme authors do not like the resulting color, |
+they have the option to theme Chromium widgets specially. |
## Note to GTK theme authors: How to theme Chromium widgets |
Every widget Chromium uses will have a "chromium" style class added to it. For |
-example, a texfield selector might look like: |
+example, a textfield selector might look like: |
``` |
.window.background.chromium .entry.chromium |
@@ -59,11 +53,6 @@ they might use: |
For GTK3.20 or later, themes will as usual have to replace ".entry" with |
"entry". |
-Additional requirements for border colors to be picked up: |
- |
-* Must have a border-style that is not none. |
-* Must have a border-width that is nonzero. |
- |
The list of CSS selectors that Chromium uses to determine its colors is in |
//src/chrome/browser/ui/libgtkui/native_theme_gtk3.cc. |