From 560da05fef957760d1b7e99a801a1725177fd708 Mon Sep 17 00:00:00 2001
From: Mads Marquart <mads@marquart.dk>
Date: Mon, 5 Sep 2022 13:33:44 +0200
Subject: [PATCH] Add CoreGraphics FFI used by `winit`

---
 core-graphics-types/src/base.rs | 11 +++++++
 core-graphics/src/display.rs    | 51 +++++++++++++++++++++++++++++++++
 2 files changed, 62 insertions(+)

diff --git a/core-graphics-types/src/base.rs b/core-graphics-types/src/base.rs
index d5efc3b..2a08126 100644
--- a/core-graphics-types/src/base.rs
+++ b/core-graphics-types/src/base.rs
@@ -30,3 +30,14 @@ pub type CGError = libc::int32_t;
 
 pub type CGGlyph = libc::c_ushort;
 
+pub const kCGErrorSuccess: CGError = 0;
+pub const kCGErrorFailure: CGError = 1000;
+pub const kCGErrorIllegalArgument: CGError = 1001;
+pub const kCGErrorInvalidConnection: CGError = 1002;
+pub const kCGErrorInvalidContext: CGError = 1003;
+pub const kCGErrorCannotComplete: CGError = 1004;
+pub const kCGErrorNotImplemented: CGError = 1006;
+pub const kCGErrorRangeCheck: CGError = 1007;
+pub const kCGErrorTypeCheck: CGError = 1008;
+pub const kCGErrorInvalidOperation: CGError = 1010;
+pub const kCGErrorNoneAvailable: CGError = 1011;
diff --git a/core-graphics/src/display.rs b/core-graphics/src/display.rs
index 394520b..3fe5b6e 100644
--- a/core-graphics/src/display.rs
+++ b/core-graphics/src/display.rs
@@ -23,6 +23,7 @@ use foreign_types::ForeignType;
 
 pub type CGDirectDisplayID = u32;
 pub type CGWindowID        = u32;
+pub type CGWindowLevel = i32;
 
 pub const kCGNullWindowID: CGWindowID = 0 as CGWindowID;
 pub const kCGNullDirectDisplayID: CGDirectDisplayID = 0 as CGDirectDisplayID;
@@ -68,6 +69,17 @@ pub const kDisplayModeNativeFlag: u32              = 0x02000000;
 
 pub const kDisplayModeSafetyFlags: u32             = 0x00000007;
 
+pub type CGDisplayBlendFraction = f32;
+pub const kCGDisplayBlendNormal: CGDisplayBlendFraction = 0.0;
+pub const kCGDisplayBlendSolidColor: CGDisplayBlendFraction = 1.0;
+
+pub type CGDisplayFadeReservationToken = u32;
+pub const kCGDisplayFadeReservationInvalidToken: CGDisplayFadeReservationToken = 0;
+
+pub type CGDisplayFadeInterval = f32;
+pub type CGDisplayReservationInterval = f32;
+pub const kCGMaxDisplayReservationInterval: CGDisplayReservationInterval = 15.0;
+
 pub const IO1BitIndexedPixels: &str =     "P";
 pub const IO2BitIndexedPixels: &str =     "PP";
 pub const IO4BitIndexedPixels: &str =     "PPPP";
@@ -621,6 +633,7 @@ extern "C" {
 
     pub static kCGDisplayShowDuplicateLowResolutionModes: CFStringRef;
 
+    pub fn CGDisplayModeRetain(mode: ::sys::CGDisplayModeRef);
     pub fn CGDisplayModeRelease(mode: ::sys::CGDisplayModeRef);
 
     pub fn CGMainDisplayID() -> CGDirectDisplayID;
@@ -658,6 +671,12 @@ extern "C" {
     pub fn CGDisplayBounds(display: CGDirectDisplayID) -> CGRect;
     pub fn CGDisplayCreateImage(display: CGDirectDisplayID) -> ::sys::CGImageRef;
 
+    // Capturing and Releasing Displays
+    pub fn CGDisplayCapture(display: CGDirectDisplayID) -> CGError;
+    pub fn CGDisplayRelease(display: CGDirectDisplayID) -> CGError;
+    pub fn CGShieldingWindowLevel() -> CGWindowLevel;
+
+    // Configuring Displays
     pub fn CGBeginDisplayConfiguration(config: *mut CGDisplayConfigRef) -> CGError;
     pub fn CGCancelDisplayConfiguration(config: CGDisplayConfigRef) -> CGError;
     pub fn CGCompleteDisplayConfiguration(
@@ -681,6 +700,7 @@ extern "C" {
         x: i32,
         y: i32,
     ) -> CGError;
+    pub fn CGRestorePermanentDisplayConfiguration();
 
     pub fn CGDisplayCopyDisplayMode(display: CGDirectDisplayID) -> ::sys::CGDisplayModeRef;
     pub fn CGDisplayModeGetHeight(mode: ::sys::CGDisplayModeRef) -> libc::size_t;
@@ -696,6 +716,11 @@ extern "C" {
         display: CGDirectDisplayID,
         options: CFDictionaryRef,
     ) -> CFArrayRef;
+    pub fn CGDisplaySetDisplayMode(
+        display: CGDirectDisplayID,
+        mode: ::sys::CGDisplayModeRef,
+        options: CFDictionaryRef,
+    ) -> CGError;
 
     // mouse stuff
     pub fn CGDisplayHideCursor(display: CGDirectDisplayID) -> CGError;
@@ -704,6 +729,32 @@ extern "C" {
     pub fn CGWarpMouseCursorPosition(point: CGPoint) -> CGError;
     pub fn CGAssociateMouseAndMouseCursorPosition(connected: boolean_t) -> CGError;
 
+    // Display Fade Effects
+    pub fn CGConfigureDisplayFadeEffect(
+        config: CGDisplayConfigRef,
+        fadeOutSeconds: CGDisplayFadeInterval,
+        fadeInSeconds: CGDisplayFadeInterval,
+        fadeRed: f32,
+        fadeGreen: f32,
+        fadeBlue: f32,
+    ) -> CGError;
+    pub fn CGAcquireDisplayFadeReservation(
+        seconds: CGDisplayReservationInterval,
+        token: *mut CGDisplayFadeReservationToken,
+    ) -> CGError;
+    pub fn CGDisplayFade(
+        token: CGDisplayFadeReservationToken,
+        duration: CGDisplayFadeInterval,
+        startBlend: CGDisplayBlendFraction,
+        endBlend: CGDisplayBlendFraction,
+        redBlend: f32,
+        greenBlend: f32,
+        blueBlend: f32,
+        synchronous: boolean_t,
+    ) -> CGError;
+    // CGDisplayFadeOperationInProgress
+    pub fn CGReleaseDisplayFadeReservation(token: CGDisplayFadeReservationToken) -> CGError;
+
     // Window Services Reference
     pub fn CGWindowListCopyWindowInfo(
         option: CGWindowListOption,