Move api module into platform::linux

src/platform/linux/x11/monitor.rs

@@ -0,0 +1,44 @@
+use std::collections::VecDeque;
+use std::sync::Arc;
+
+use super::XConnection;
+use native_monitor::NativeMonitorId;
+
+#[derive(Clone)]
+pub struct MonitorId(pub Arc<XConnection>, pub u32);
+
+pub fn get_available_monitors(x: &Arc<XConnection>) -> VecDeque<MonitorId> {
+    let nb_monitors = unsafe { (x.xlib.XScreenCount)(x.display) };
+    x.check_errors().expect("Failed to call XScreenCount");
+
+    let mut monitors = VecDeque::new();
+    monitors.extend((0 .. nb_monitors).map(|i| MonitorId(x.clone(), i as u32)));
+    monitors
+}
+
+#[inline]
+pub fn get_primary_monitor(x: &Arc<XConnection>) -> MonitorId {
+    let primary_monitor = unsafe { (x.xlib.XDefaultScreen)(x.display) };
+    x.check_errors().expect("Failed to call XDefaultScreen");
+    MonitorId(x.clone(), primary_monitor as u32)
+}
+
+impl MonitorId {
+    pub fn get_name(&self) -> Option<String> {
+        let MonitorId(_, screen_num) = *self;
+        Some(format!("Monitor #{}", screen_num))
+    }
+
+    #[inline]
+    pub fn get_native_identifier(&self) -> NativeMonitorId {
+        NativeMonitorId::Numeric(self.1)
+    }
+
+    pub fn get_dimensions(&self) -> (u32, u32) {
+        let screen = unsafe { (self.0.xlib.XScreenOfDisplay)(self.0.display, self.1 as i32) };
+        let width = unsafe { (self.0.xlib.XWidthOfScreen)(screen) };
+        let height = unsafe { (self.0.xlib.XHeightOfScreen)(screen) };
+        self.0.check_errors().expect("Failed to get monitor dimensions");
+        (width as u32, height as u32)
+    }
+}