From 09026f4328d0e578823062d6506ffdacac457b25 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Jean-Philippe=20Bruy=C3=A8re?= <jp_bruyere@hotmail.com>
Date: Wed, 24 Nov 2021 05:00:15 +0100
Subject: [PATCH] wip

---
 Backends/CairoBackend/src/Context.cs   |  5 +++++
 Backends/CairoBackend/src/Device.cs    |  2 +-
 Backends/CairoBackend/src/EGLDevice.cs | 10 +++++++++-
 Backends/CairoBackend/src/GLSurface.cs |  7 +++++++
 Backends/CairoBackend/src/Surface.cs   | 18 +++++-------------
 5 files changed, 27 insertions(+), 15 deletions(-)

diff --git a/Backends/CairoBackend/src/Context.cs b/Backends/CairoBackend/src/Context.cs
index a28c7b0c..a4eac7a2 100644
--- a/Backends/CairoBackend/src/Context.cs
+++ b/Backends/CairoBackend/src/Context.cs
@@ -138,6 +138,11 @@ namespace Crow.CairoBackend
 				return NativeMethods.cairo_status (handle);
 			}
 		}
+		public string StatusString {
+			get {
+				return System.Runtime.InteropServices.Marshal.PtrToStringAuto(NativeMethods.cairo_status_to_string (Status));
+			}
+		}
 
 		public IntPtr Handle => handle;
 
diff --git a/Backends/CairoBackend/src/Device.cs b/Backends/CairoBackend/src/Device.cs
index 4cbb180f..c87b494b 100644
--- a/Backends/CairoBackend/src/Device.cs
+++ b/Backends/CairoBackend/src/Device.cs
@@ -112,7 +112,7 @@ namespace Crow.CairoBackend
 		public virtual ISurface CreateSurface(byte[] data, int width, int height)
 			=> new ImageSurface (data, Format.ARGB32, width, height, 4 * width);
 
-		public ISurface CreateSurface (IntPtr nativeWindoPointer, int width, int height) {
+		public virtual ISurface CreateSurface (IntPtr nativeWindoPointer, int width, int height) {
 			switch (Environment.OSVersion.Platform) {
 			case PlatformID.Unix:
 				IntPtr disp = Glfw3.GetX11Display ();
diff --git a/Backends/CairoBackend/src/EGLDevice.cs b/Backends/CairoBackend/src/EGLDevice.cs
index 5305298b..83629374 100644
--- a/Backends/CairoBackend/src/EGLDevice.cs
+++ b/Backends/CairoBackend/src/EGLDevice.cs
@@ -28,14 +28,22 @@
 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 //
 using System;
+using Drawing2D;
 
 namespace Crow.CairoBackend
 {
 	public class EGLDevice : GLDevice
 	{
-		public EGLDevice (IntPtr dpy, IntPtr gl_ctx) : base (NativeMethods.cairo_egl_device_create (dpy, gl_ctx), true)
+		public EGLDevice (IntPtr dpy, IntPtr gl_ctx, bool threadAwayre = false) : base (NativeMethods.cairo_egl_device_create (dpy, gl_ctx), true)
 		{
+			SetThreadAware(threadAwayre);
 		}
+		public override ISurface CreateSurface(int width, int height)
+			=> new ImageSurface (Format.ARGB32, width, height);
+		public override ISurface CreateSurface (IntPtr nativeWindoPointer, int width, int height) {
+			return new GLSurface (this, Glfw.Glfw3.GetEGLSurface (nativeWindoPointer), width, height);
+		}
+
 	}
 }
 
diff --git a/Backends/CairoBackend/src/GLSurface.cs b/Backends/CairoBackend/src/GLSurface.cs
index ddbf0a4f..c7959dc3 100644
--- a/Backends/CairoBackend/src/GLSurface.cs
+++ b/Backends/CairoBackend/src/GLSurface.cs
@@ -52,6 +52,13 @@ namespace Crow.CairoBackend {
 		public GLSurface (WGLDevice device, IntPtr hdc, int width, int height)
 			: base (NativeMethods.cairo_gl_surface_create_for_dc (device.Handle, hdc, width, height), true)
 		{}
+		public override void Flush ()
+		{
+			base.Flush ();
+			SwapBuffers ();
+		}
+		public override int Width => NativeMethods.cairo_gl_surface_get_width (handle);
+		public override int Height => NativeMethods.cairo_gl_surface_get_height (handle);
 
 		public void SwapBuffers(){
 			NativeMethods.cairo_gl_surface_swapbuffers (this.Handle);
diff --git a/Backends/CairoBackend/src/Surface.cs b/Backends/CairoBackend/src/Surface.cs
index 2d6fac10..8e797658 100644
--- a/Backends/CairoBackend/src/Surface.cs
+++ b/Backends/CairoBackend/src/Surface.cs
@@ -111,12 +111,9 @@ namespace Crow.CairoBackend {
 		}
 
 
-		public Surface CreateSimilar (
-			Content content, int width, int height)
-		{
+		public ISurface CreateSimilar (int width, int height) {
 			IntPtr p = NativeMethods.cairo_surface_create_similar (
-				this.Handle, content, width, height);
-
+				this.Handle, Content.ColorAlpha, width, height);
 			return Surface.Lookup(p, true);
 		}
 
@@ -152,7 +149,7 @@ namespace Crow.CairoBackend {
 			return Status;
 		}
 
-		public void Flush ()
+		public virtual void Flush ()
 		{
 			NativeMethods.cairo_surface_flush (handle);
 		}
@@ -166,8 +163,8 @@ namespace Crow.CairoBackend {
 		{
 			NativeMethods.cairo_surface_mark_dirty_rectangle (Handle, rectangle.X, rectangle.Y, rectangle.Width, rectangle.Height);
 		}
-		public virtual int Width => -1;
-		public virtual int Height => -1;
+		public virtual int Width => NativeMethods.cairo_image_surface_get_width (handle);
+		public virtual int Height => NativeMethods.cairo_image_surface_get_height (handle);
 
 		public IntPtr Handle {
 			get {
@@ -235,10 +232,5 @@ namespace Crow.CairoBackend {
 		{
 			throw new NotImplementedException();
 		}
-
-		public ISurface CreateSimilar(int width, int height)
-		{
-			throw new NotImplementedException();
-		}
 	}
 }
-- 
2.47.3