electron/patches/common/chromium/mas-cgdisplayusesforcetogray.patch

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jeremy Apthorp <nornagon@nornagon.net>
2018-09-21 00:30:26 +00:00
Date: Thu, 20 Sep 2018 17:49:24 -0700
Subject: mas-cgdisplayusesforcetogray.patch
2018-09-21 00:30:26 +00:00
Removes usage of the CGDisplayUsesForceToGray private API.
diff --git a/ui/display/mac/screen_mac.mm b/ui/display/mac/screen_mac.mm
index ec1fc4edf55d8b5893dece146ddb0d39231f547d..05d8c811b913d88b71017a91eb3f2f993ccadd74 100644
--- a/ui/display/mac/screen_mac.mm
+++ b/ui/display/mac/screen_mac.mm
@@ -106,7 +106,17 @@ Display BuildDisplayForScreen(NSScreen* screen) {
display.set_color_depth(NSBitsPerPixelFromDepth([screen depth]));
display.set_depth_per_component(NSBitsPerSampleFromDepth([screen depth]));
+#ifdef MAS_BUILD
+ // This is equivalent to the CGDisplayUsesForceToGray() API as at 2018-08-06,
+ // but avoids usage of the private API.
+ CFStringRef app = CFSTR("com.apple.CoreGraphics");
+ CFStringRef key = CFSTR("DisplayUseForcedGray");
+ Boolean key_valid = false;
+ display.set_is_monochrome(
+ CFPreferencesGetAppBooleanValue(key, app, &key_valid));
+#else
display.set_is_monochrome(CGDisplayUsesForceToGray());
+#endif
// CGDisplayRotation returns a double. Display::SetRotationAsDegree will
// handle the unexpected situations were the angle is not a multiple of 90.