Get the monitors attached to the display, and their resolution for X11

1 files changed, 54 insertions, 0 deletions

diff --git a/src/x11/monitor.rs b/src/x11/monitor.rs
new file mode 100644
index 0000000..2774d5f
--- /dev/null
+++ b/src/x11/monitor.rs
@@ -0,0 +1,54 @@
+use std::{ptr};
+use super::ffi;
+
+pub struct MonitorID(uint);
+
+pub fn get_available_monitors() -> Vec<MonitorID> {
+    let nb_monitors = unsafe {
+        let display = ffi::XOpenDisplay(ptr::null());
+        if display.is_null() {
+            fail!("get_available_monitors failed");
+        }
+        let nb_monitors = ffi::XScreenCount(display);
+        ffi::XCloseDisplay(display);
+        nb_monitors
+    };
+
+    let mut vec = Vec::new();
+    vec.grow_fn(nb_monitors as uint, |i| MonitorID(i));
+    vec
+}
+
+pub fn get_primary_monitor() -> MonitorID {
+    let primary_monitor = unsafe {
+        let display = ffi::XOpenDisplay(ptr::null());
+        if display.is_null() {
+            fail!("get_available_monitors failed");
+        }
+        let primary_monitor = ffi::XDefaultScreen(display);
+        ffi::XCloseDisplay(display);
+        primary_monitor
+    };
+
+    MonitorID(primary_monitor as uint)
+}
+
+impl MonitorID {
+    pub fn get_name(&self) -> Option<String> {
+        Some("<Unknown>".to_string())
+    }
+
+    pub fn get_dimensions(&self) -> (uint, uint) {
+        let dimensions = unsafe {
+            let display = ffi::XOpenDisplay(ptr::null());
+            let MonitorID(screen_num) = *self;
+            let screen = ffi::XScreenOfDisplay(display, screen_num as i32);
+            let width = ffi::XWidthOfScreen(screen);
+            let height = ffi::XHeightOfScreen(screen);
+            (width as uint, height as uint)
+        };
+
+        dimensions
+    }
+}
+