[cogl/wip/cogl-sharp: 4/17] cogl-sharp: Start looking at exposing Context, FrameBuffer and OnScreen

[Damien Lespiau <dlespiau src gnome org>]

commit fe8f7a98433d2cf9e58fd12c05c5f5a3aa013790
Author: Damien Lespiau <damien lespiau intel com>
Date:   Sun Sep 30 18:42:03 2012 +0100

    cogl-sharp: Start looking at exposing Context, FrameBuffer and OnScreen
    
    This is by not mean complete but a first stab at looking at what is
    needed to bind Cogl to C#.
    
    parse-gir.py is expected to grow a bit to generate the bulk of the
    bindings, for now it was used to generate the BufferBit bitfield.
    
    Life cycle of objects is not looked at in details yet.

 cogl-sharp/BufferBit.cs   |   13 +++++++++
 cogl-sharp/Context.cs     |   45 +++++++++++++++++++++++++++++++++
 cogl-sharp/FrameBuffer.cs |   47 +++++++++++++++++++++++++++++++++++
 cogl-sharp/Makefile.am    |    5 +++
 cogl-sharp/Object.cs      |   58 +++++++++++++++++++++++++++++++++++++++++++
 cogl-sharp/OnScreen.cs    |   60 +++++++++++++++++++++++++++++++++++++++++++++
 cogl-sharp/parse-gir.py   |   51 ++++++++++++++++++++++++++++++++++++++
 7 files changed, 279 insertions(+), 0 deletions(-)
---
diff --git a/cogl-sharp/BufferBit.cs b/cogl-sharp/BufferBit.cs
new file mode 100644
index 0000000..ad1a4d6
--- /dev/null
+++ b/cogl-sharp/BufferBit.cs
@@ -0,0 +1,13 @@
+/* This file is generated by parse-gir.py, do not hand edit */
+using System;
+
+namespace Cogl
+{
+    [Flags]
+    public enum BufferBit
+    {
+        Color = 1,
+        Depth = 2,
+        Stencil = 4
+    }
+}
diff --git a/cogl-sharp/Context.cs b/cogl-sharp/Context.cs
new file mode 100644
index 0000000..6665a86
--- /dev/null
+++ b/cogl-sharp/Context.cs
@@ -0,0 +1,45 @@
+/*
+ * Cogl
+ *
+ * An object oriented GL/GLES Abstraction/Utility Layer
+ *
+ * Copyright (C) 2012 Intel Corporation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see
+ * <http://www.gnu.org/licenses/>.
+ *
+ * Authors:
+ *   Damien Lespiau <damien lespiau intel com>
+ */
+
+using System;
+using System.Runtime.InteropServices;
+
+namespace Cogl
+{
+    public sealed class Context : Cogl.Object
+    {
+
+        public Context(IntPtr h) : base(h) {}
+
+        [DllImport("cogl2.dll")]
+        private static extern IntPtr cogl_context_new(IntPtr display,
+                                                      IntPtr error);
+
+        public Context()
+        {
+            handle = cogl_context_new(IntPtr.Zero, IntPtr.Zero);
+        }
+    }
+}
diff --git a/cogl-sharp/FrameBuffer.cs b/cogl-sharp/FrameBuffer.cs
new file mode 100644
index 0000000..a387655
--- /dev/null
+++ b/cogl-sharp/FrameBuffer.cs
@@ -0,0 +1,47 @@
+/*
+ * Cogl
+ *
+ * An object oriented GL/GLES Abstraction/Utility Layer
+ *
+ * Copyright (C) 2012 Intel Corporation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see
+ * <http://www.gnu.org/licenses/>.
+ *
+ * Authors:
+ *   Damien Lespiau <damien lespiau intel com>
+ */
+
+using System;
+using System.Runtime.InteropServices;
+
+namespace Cogl
+{
+    public class FrameBuffer : Cogl.Object
+    {
+        public FrameBuffer(IntPtr h) : base(h) {}
+        public FrameBuffer() {}
+
+        [DllImport("cogl2.dll")]
+        private static extern void cogl_framebuffer_clear(IntPtr fb,
+                                                          BufferBit buffers,
+                                                          ref Color color);
+
+        public void Clear(BufferBit buffers, ref Color color)
+        {
+            cogl_framebuffer_clear(handle, buffers, ref color);
+        }
+    }
+
+}
diff --git a/cogl-sharp/Makefile.am b/cogl-sharp/Makefile.am
index 69cabd2..f9395e5 100644
--- a/cogl-sharp/Makefile.am
+++ b/cogl-sharp/Makefile.am
@@ -9,8 +9,13 @@ pkgconfigdir = $(libdir)/pkgconfig
 pkgconfig_DATA = cogl2-sharp.pc
 
 sources =		\
+	BufferBit.cs	\
 	Color.cs	\
+	Context.cs	\
+	FrameBuffer.cs	\
 	Matrix.cs	\
+	Object.cs	\
+	OnScreen.cs	\
 	AssemblyInfo.cs	\
 	$(NULL)
 
diff --git a/cogl-sharp/Object.cs b/cogl-sharp/Object.cs
new file mode 100644
index 0000000..c615d71
--- /dev/null
+++ b/cogl-sharp/Object.cs
@@ -0,0 +1,58 @@
+/*
+ * Cogl
+ *
+ * An object oriented GL/GLES Abstraction/Utility Layer
+ *
+ * Copyright (C) 2012 Intel Corporation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see
+ * <http://www.gnu.org/licenses/>.
+ *
+ * Authors:
+ *   Damien Lespiau <damien lespiau intel com>
+ */
+
+using System;
+using System.Runtime.InteropServices;
+
+namespace Cogl
+{
+    public class Object : IDisposable
+    {
+        protected IntPtr handle;
+
+        [DllImport("cogl2.dll")]
+        private static extern IntPtr cogl_object_ref(IntPtr o);
+
+        [DllImport("cogl2.dll")]
+        private static extern void cogl_object_unref(IntPtr o);
+
+        public Object() { }
+
+        public Object(IntPtr h)
+        {
+            handle = h;
+        }
+
+        public void Dispose()
+        {
+            cogl_object_unref(handle);
+        }
+
+        public IntPtr Handle
+        {
+            get { return handle; }
+        }
+    }
+}
diff --git a/cogl-sharp/OnScreen.cs b/cogl-sharp/OnScreen.cs
new file mode 100644
index 0000000..dd6d66a
--- /dev/null
+++ b/cogl-sharp/OnScreen.cs
@@ -0,0 +1,60 @@
+/*
+ * Cogl
+ *
+ * An object oriented GL/GLES Abstraction/Utility Layer
+ *
+ * Copyright (C) 2012 Intel Corporation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see
+ * <http://www.gnu.org/licenses/>.
+ *
+ * Authors:
+ *   Damien Lespiau <damien lespiau intel com>
+ */
+
+using System;
+using System.Runtime.InteropServices;
+
+namespace Cogl
+{
+    public sealed class OnScreen : FrameBuffer
+    {
+        public OnScreen(IntPtr h) : base(h) {}
+
+        [DllImport("cogl2.dll")]
+        private static extern IntPtr cogl_onscreen_new(IntPtr p,
+                                                       int width, int height);
+
+        public OnScreen(Context ctx, int width, int height)
+        {
+            handle = cogl_onscreen_new(ctx.Handle, width, height);
+        }
+
+        [DllImport("cogl2.dll")]
+        private static extern IntPtr cogl_onscreen_show(IntPtr p);
+
+        public void Show()
+        {
+            cogl_onscreen_show(handle);
+        }
+
+        [DllImport("cogl2.dll")]
+        private static extern IntPtr cogl_onscreen_swap_buffers(IntPtr p);
+
+        public void SwapBuffers()
+        {
+            cogl_onscreen_swap_buffers(handle);
+        }
+    }
+}
diff --git a/cogl-sharp/parse-gir.py b/cogl-sharp/parse-gir.py
new file mode 100755
index 0000000..4e45d6e
--- /dev/null
+++ b/cogl-sharp/parse-gir.py
@@ -0,0 +1,51 @@
+#!/usr/bin/env python
+import sys
+import xml.dom.minidom
+from xml.dom.minidom import Node
+
+types = (
+    "BufferBit"
+)
+
+header="""/* This file is generated by parse-gir.py, do not hand edit */
+using System;
+
+namespace Cogl
+{
+"""
+footer="""}
+"""
+
+def make_enum_name(gir_name):
+    return gir_name.capitalize()
+
+def generate_bitfields(doc):
+    for node in doc.getElementsByTagName("bitfield"):
+        type_name = node.getAttribute("name")
+        if type_name not in types:
+            continue
+
+        print("Generate %s" % type_name + ".cs")
+
+        fo = open(type_name + ".cs", "w+")
+        fo.write(header)
+        fo.write("    [Flags]\n")
+        fo.write("    public enum %s\n" % type_name)
+        fo.write("    {\n")
+        members = node.getElementsByTagName("member")
+        n = 1
+        for member in members:
+            member_name = member.getAttribute("name")
+            value = member.getAttribute("value")
+            enum_name = make_enum_name(member_name)
+            if n < len(members):
+                fo.write("        %s = %s,\n" % (enum_name, value))
+            else:
+                fo.write("        %s = %s\n" % (enum_name, value))
+            n += 1
+        fo.write("    }\n")
+        fo.write(footer)
+        fo.close()
+
+doc = xml.dom.minidom.parse(sys.argv[1])
+generate_bitfields(doc)