From 3376332a851e16801a4f27347c8d6170c9008e73 Mon Sep 17 00:00:00 2001
From: Pierre Krieger <pierre.krieger1708@gmail.com>
Date: Sun, 17 May 2015 11:19:06 +0200
Subject: Rework the X implementation to use only one X connection

---
 src/api/x11/monitor.rs | 66 ++++++++++++--------------------------------------
 1 file changed, 16 insertions(+), 50 deletions(-)

(limited to 'src/api/x11/monitor.rs')

diff --git a/src/api/x11/monitor.rs b/src/api/x11/monitor.rs
index a563d2e..d556930 100644
--- a/src/api/x11/monitor.rs
+++ b/src/api/x11/monitor.rs
@@ -1,72 +1,38 @@
-use std::ptr;
 use std::collections::VecDeque;
-use super::ffi;
-use super::ensure_thread_init;
-use native_monitor::NativeMonitorId;
+use std::sync::Arc;
 
-pub struct MonitorID(pub u32);
+use super::XConnection;
+use native_monitor::NativeMonitorId;
 
-pub fn get_available_monitors() -> VecDeque<MonitorID> {
-    let xlib = ffi::Xlib::open().unwrap();        // FIXME: gracious handling
+pub struct MonitorID(pub Arc<XConnection>, pub u32);
 
-    ensure_thread_init(&xlib);
-    let nb_monitors = unsafe {
-        let display = (xlib.XOpenDisplay)(ptr::null());
-        if display.is_null() {
-            panic!("get_available_monitors failed");
-        }
-        let nb_monitors = (xlib.XScreenCount)(display);
-        (xlib.XCloseDisplay)(display);
-        nb_monitors
-    };
+pub fn get_available_monitors(x: &Arc<XConnection>) -> VecDeque<MonitorID> {
+    let nb_monitors = unsafe { (x.xlib.XScreenCount)(x.display) };
 
     let mut monitors = VecDeque::new();
-    monitors.extend((0..nb_monitors).map(|i| MonitorID(i as u32)));
+    monitors.extend((0 .. nb_monitors).map(|i| MonitorID(x.clone(), i as u32)));
     monitors
 }
 
-pub fn get_primary_monitor() -> MonitorID {
-    let xlib = ffi::Xlib::open().unwrap();        // FIXME: gracious handling
-
-    ensure_thread_init(&xlib);
-    let primary_monitor = unsafe {
-        let display = (xlib.XOpenDisplay)(ptr::null());
-        if display.is_null() {
-            panic!("get_available_monitors failed");
-        }
-        let primary_monitor = (xlib.XDefaultScreen)(display);
-        (xlib.XCloseDisplay)(display);
-        primary_monitor
-    };
-
-    MonitorID(primary_monitor as u32)
+pub fn get_primary_monitor(x: &Arc<XConnection>) -> MonitorID {
+    let primary_monitor = unsafe { (x.xlib.XDefaultScreen)(x.display) };
+    MonitorID(x.clone(), primary_monitor as u32)
 }
 
 impl MonitorID {
     pub fn get_name(&self) -> Option<String> {
-        let MonitorID(screen_num) = *self;
+        let MonitorID(_, screen_num) = *self;
         Some(format!("Monitor #{}", screen_num))
     }
 
     pub fn get_native_identifier(&self) -> NativeMonitorId {
-        let MonitorID(screen_num) = *self;
-        NativeMonitorId::Numeric(screen_num)
+        NativeMonitorId::Numeric(self.1)
     }
 
     pub fn get_dimensions(&self) -> (u32, u32) {
-        let xlib = ffi::Xlib::open().unwrap();        // FIXME: gracious handling
-
-        let dimensions = unsafe {
-            let display = (xlib.XOpenDisplay)(ptr::null());
-            let MonitorID(screen_num) = *self;
-            let screen = (xlib.XScreenOfDisplay)(display, screen_num as i32);
-            let width = (xlib.XWidthOfScreen)(screen);
-            let height = (xlib.XHeightOfScreen)(screen);
-            (xlib.XCloseDisplay)(display);
-            (width as u32, height as u32)
-        };
-
-        dimensions
+        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) };
+        (width as u32, height as u32)
     }
 }
-
-- 
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