2 files changed, 78 insertions, 0 deletions
diff --git a/src/platform/linux.rs b/src/platform/linux.rs
new file mode 100644
index 0000000..ec0fc6a
--- /dev/null
+++ b/src/platform/linux.rs
@@ -0,0 +1,34 @@
+use std::os::raw::{c_ushort, c_void};
+use std::ptr;
+use x11::xlib::{XCloseDisplay, XDefaultScreen, XFree, XOpenDisplay, XRootWindow};
+use x11::xrandr::{
+    XRRAllocGamma, XRRCrtcGamma, XRRGetCrtcGammaSize, XRRGetScreenResourcesCurrent, XRRSetCrtcGamma,
+};
+
+pub fn set_temp(temp: u32) {
+    let ratio: f64 = (temp % 500) as f64 / 500f64;
+    unsafe {
+        let display = XOpenDisplay(ptr::null_mut());
+        let screen = XDefaultScreen(display);
+        let root = XRootWindow(display, screen);
+        let resource = XRRGetScreenResourcesCurrent(display, root);
+
+        for x in 0..(*resource).ncrtc {
+            let crtcxid = (*resource).crtcs.offset(x as isize);
+            let size = XRRGetCrtcGammaSize(display, *crtcxid);
+            let crtc_gamma: *mut XRRCrtcGamma = XRRAllocGamma(size);
+            let gamma = crate::avg(temp, ratio);
+
+            for i in 0..size {
+                let g = (65535f64 * i as f64) / size as f64;
+                *((*crtc_gamma).red as *mut c_ushort).offset(i as isize) = (g * gamma.red) as u16;
+                *((*crtc_gamma).green as *mut c_ushort).offset(i as isize) =
+                    (g * gamma.green) as u16;
+                *((*crtc_gamma).blue as *mut c_ushort).offset(i as isize) = (g * gamma.blue) as u16;
+            }
+            XRRSetCrtcGamma(display, *crtcxid, crtc_gamma);
+            XFree(crtc_gamma as *mut c_void);
+        }
+        XCloseDisplay(display);
+    }
+}
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(),
+        );
+    }
+}