From ac23d3114cf40628098d9e5574cb059aa0f22aee Mon Sep 17 00:00:00 2001
From: Dzmitry Malyshau <kvarkus@gmail.com>
Date: Sat, 11 Apr 2015 23:30:17 -0400
Subject: Implemented get_pixel_format for X11

---
 src/x11/window/mod.rs | 34 +++++++++++++++++++++++++++++++++-
 1 file changed, 33 insertions(+), 1 deletion(-)

(limited to 'src/x11/window/mod.rs')

diff --git a/src/x11/window/mod.rs b/src/x11/window/mod.rs
index db24312..83f8a19 100644
--- a/src/x11/window/mod.rs
+++ b/src/x11/window/mod.rs
@@ -281,6 +281,7 @@ pub struct Window {
     is_closed: AtomicBool,
     wm_delete_window: ffi::Atom,
     current_size: Cell<(libc::c_int, libc::c_int)>,
+    pixel_format: PixelFormat,
     /// Events that have been retreived with XLib but not dispatched with iterators yet
     pending_events: Mutex<VecDeque<Event>>,
     cursor_state: Mutex<CursorState>,
@@ -328,6 +329,11 @@ impl Window {
                 visual_attributes.push(val as libc::c_int);
             }
 
+            if let Some(val) = builder.srgb {
+                visual_attributes.push(ffi::glx_extra::FRAMEBUFFER_SRGB_CAPABLE_ARB as libc::c_int);
+                visual_attributes.push(if val {1} else {0});
+            }
+
             visual_attributes.push(0);
 
             let mut num_fb: libc::c_int = mem::uninitialized();
@@ -378,6 +384,31 @@ impl Window {
             vi_copy
         };
 
+        // querying the chosen pixel format
+        let pixel_format = {
+            let get_attrib = |attrib: libc::c_int| -> i32 {
+                let mut value = 0;
+                unsafe { ffi::glx::GetFBConfigAttrib(display, fb_config, attrib, &mut value); }
+                value
+            };
+
+            PixelFormat {
+                hardware_accelerated: true,
+                red_bits: get_attrib(ffi::GLX_RED_SIZE) as u8,
+                green_bits: get_attrib(ffi::GLX_GREEN_SIZE) as u8,
+                blue_bits: get_attrib(ffi::GLX_BLUE_SIZE) as u8,
+                alpha_bits: get_attrib(ffi::GLX_ALPHA_SIZE) as u8,
+                depth_bits: get_attrib(ffi::GLX_DEPTH_SIZE) as u8,
+                stencil_bits: get_attrib(ffi::GLX_STENCIL_SIZE) as u8,
+                stereoscopy: get_attrib(ffi::GLX_STEREO) != 0,
+                double_buffer: get_attrib(ffi::GLX_DOUBLEBUFFER) != 0,
+                multisampling: if get_attrib(ffi::glx::SAMPLE_BUFFERS as libc::c_int) != 0 {
+                    Some(get_attrib(ffi::glx::SAMPLES as libc::c_int) as u16)
+                }else { None },
+                srgb: get_attrib(ffi::glx_extra::FRAMEBUFFER_SRGB_CAPABLE_ARB as libc::c_int) != 0,
+            }
+        };
+
         // getting the root window
         let root = unsafe { ffi::XDefaultRootWindow(display) };
 
@@ -600,6 +631,7 @@ impl Window {
             is_closed: AtomicBool::new(false),
             wm_delete_window: wm_delete_window,
             current_size: Cell::new((0, 0)),
+            pixel_format: pixel_format,
             pending_events: Mutex::new(VecDeque::new()),
             cursor_state: Mutex::new(CursorState::Normal),
         };
@@ -734,7 +766,7 @@ impl Window {
     }
 
     pub fn get_pixel_format(&self) -> PixelFormat {
-        unimplemented!();
+        self.pixel_format.clone()
     }
 
     pub fn set_window_resize_callback(&mut self, _: Option<fn(u32, u32)>) {
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