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111a340b
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engine
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体验新版 GitCode,发现更多精彩内容 >>
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111a340b
编写于
9月 23, 2019
作者:
J
Jaime Blasco
提交者:
Mouad Debbar
9月 23, 2019
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差异文件
[Web] Implement dark mode support for web (#12335)
上级
cdc4c30c
变更
2
隐藏空白更改
内联
并排
Showing
2 changed file
with
56 addition
and
3 deletion
+56
-3
lib/web_ui/lib/src/engine/window.dart
lib/web_ui/lib/src/engine/window.dart
+55
-0
lib/web_ui/lib/src/ui/window.dart
lib/web_ui/lib/src/ui/window.dart
+1
-3
未找到文件。
lib/web_ui/lib/src/engine/window.dart
浏览文件 @
111a340b
...
...
@@ -9,6 +9,11 @@ const bool _debugPrintPlatformMessages = false;
/// The Web implementation of [ui.Window].
class
EngineWindow
extends
ui
.
Window
{
EngineWindow
()
{
_addBrightnessMediaQueryListener
();
}
@override
double
get
devicePixelRatio
=>
_devicePixelRatio
;
...
...
@@ -198,6 +203,56 @@ class EngineWindow extends ui.Window {
callback
(
data
);
});
}
@override
ui
.
Brightness
get
platformBrightness
=>
_platformBrightness
;
ui
.
Brightness
_platformBrightness
=
ui
.
Brightness
.
light
;
/// Updates [_platformBrightness] and invokes [onPlatformBrightnessChanged]
/// callback if [_platformBrightness] changed.
void
_updatePlatformBrightness
(
ui
.
Brightness
newPlatformBrightness
)
{
ui
.
Brightness
previousPlatformBrightness
=
_platformBrightness
;
_platformBrightness
=
newPlatformBrightness
;
if
(
previousPlatformBrightness
!=
_platformBrightness
&&
onPlatformBrightnessChanged
!=
null
)
onPlatformBrightnessChanged
();
}
/// Reference to css media query that indicates the user theme preference on the web.
final
html
.
MediaQueryList
_brightnessMediaQuery
=
html
.
window
.
matchMedia
(
'(prefers-color-scheme: dark)'
);
/// A callback that is invoked whenever [_brightnessMediaQuery] changes value.
///
/// Updates the [_platformBrightness] with the new user preference.
html
.
EventListener
_brightnessMediaQueryListener
;
/// Set the callback function for listening changes in [_brightnessMediaQuery] value.
void
_addBrightnessMediaQueryListener
()
{
_updatePlatformBrightness
(
_brightnessMediaQuery
.
matches
?
ui
.
Brightness
.
dark
:
ui
.
Brightness
.
light
);
_brightnessMediaQueryListener
=
(
html
.
Event
event
)
{
final
html
.
MediaQueryListEvent
mqEvent
=
event
;
_updatePlatformBrightness
(
mqEvent
.
matches
?
ui
.
Brightness
.
dark
:
ui
.
Brightness
.
light
);
};
_brightnessMediaQuery
.
addListener
(
_brightnessMediaQueryListener
);
registerHotRestartListener
(()
{
_removeBrightnessMediaQueryListener
();
});
}
/// Remove the callback function for listening changes in [_brightnessMediaQuery] value.
void
_removeBrightnessMediaQueryListener
()
{
_brightnessMediaQuery
.
removeListener
(
_brightnessMediaQueryListener
);
_brightnessMediaQueryListener
=
null
;
}
@override
void
dispose
()
{
_removeBrightnessMediaQueryListener
();
}
}
/// The window singleton.
...
...
lib/web_ui/lib/src/ui/window.dart
浏览文件 @
111a340b
...
...
@@ -634,9 +634,7 @@ abstract class Window {
}
/// The setting indicating the current brightness mode of the host platform.
/// If the platform has no preference, [platformBrightness] defaults to [Brightness.light].
Brightness
get
platformBrightness
=>
_platformBrightness
;
Brightness
_platformBrightness
=
Brightness
.
light
;
Brightness
get
platformBrightness
;
/// A callback that is invoked whenever [platformBrightness] changes value.
///
...
...
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