Merge pull request #6 from amir/add-macos-supportHEADmaster

Add macOS support

1 files changed, 44 insertions, 0 deletions

diff --git a/src/platform/macos.rs b/src/platform/macos.rs
new file mode 100644
index 0000000..0292250
--- /dev/null
+++ b/src/platform/macos.rs
@@ -0,0 +1,44 @@
+use core_graphics::display::CGDisplay;
+
+pub fn set_temp(temp: u32) {
+    use std::os::raw::c_int;
+
+    let ratio: f64 = (temp % 500) as f64 / 500f64;
+    let gamma = crate::avg(temp, ratio);
+
+    let main_display = CGDisplay::main();
+
+    extern "C" {
+        fn CGSetDisplayTransferByTable(
+            display: u32,
+            table_size: u32,
+            red_table: *const f32,
+            green_table: *const f32,
+            blue_table: *const f32,
+        ) -> c_int;
+        fn CGDisplayGammaTableCapacity(display: u32) -> u32;
+    }
+
+    let table_size = unsafe { CGDisplayGammaTableCapacity(main_display.id) } as usize;
+
+    let mut red_table = vec![0.0; table_size];
+    let mut green_table = vec![0.0; table_size];
+    let mut blue_table = vec![0.0; table_size];
+
+    for i in 0..table_size {
+        let value = (i as f32) / (table_size as f32 - 1.0);
+        red_table[i] = (value * gamma.red as f32).min(1.0);
+        green_table[i] = (value * gamma.green as f32).min(1.0);
+        blue_table[i] = (value * gamma.blue as f32).min(1.0);
+    }
+
+    unsafe {
+        CGSetDisplayTransferByTable(
+            main_display.id,
+            table_size as u32,
+            red_table.as_ptr(),
+            green_table.as_ptr(),
+            blue_table.as_ptr(),
+        );
+    }
+}