Introduce FLUTTER_WAYLAND_PIXEL_RATIO env. variable

dwrobel · dwrobel · commit b6c41472effc · 2021-02-26T13:23:09.000+01:00
FLUTTER_WAYLAND_PIXEL_RATIO=<double> can be used to overwrite the pixel aspect ratio reported to the engine by FlutterEngineSendWindowMetricsEvent(). See also: https://api.flutter.dev/flutter/dart-ui/Window/devicePixelRatio.html
diff --git a/src/wayland_display.cc b/src/wayland_display.cc
@@ -42,8 +42,7 @@ static double get_pixel_ratio(int32_t physical_width, int32_t physical_height, i
     return 1.0;
   }
 
-  // TODO
-  return 1.0;
+  return getEnv("FLUTTER_WAYLAND_PIXEL_RATIO", 1.0);
 }
 
 static inline WaylandDisplay *get_wayland_display(void *data, const bool check_non_null = true) {

Original file line number	Diff line number	Diff line change
`@@ -42,8 +42,7 @@ static double get_pixel_ratio(int32_t physical_width, int32_t physical_height, i`
`42`	`42`	`return 1.0;`
`43`	`43`	`}`
`44`	`44`
`45`		`- // TODO`
`46`		`- return 1.0;`
	`45`	`+ return getEnv("FLUTTER_WAYLAND_PIXEL_RATIO", 1.0);`
`47`	`46`	`}`
`48`	`47`
`49`	`48`	`static inline WaylandDisplay get_wayland_display(void data, const bool check_non_null = true) {`