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Really moved TextPrinter to OpenTK.Compatibility.

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the_fiddler 2009-08-17 10:56:48 +00:00
parent 60c2551012
commit ee118d7ea4
29 changed files with 3439 additions and 0 deletions
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62
Source/Compatibility/Graphics/AlphaTexture2D.cs Normal file
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#region License
//
// The Open Toolkit Library License
//
// Copyright (c) 2006 - 2008 the Open Toolkit library, except where noted.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do
// so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
//
#endregion
using System;
using System.Collections.Generic;
using System.Text;
using System.Drawing;
using System.Drawing.Imaging;
using OpenTK.Graphics.OpenGL;
namespace OpenTK.Graphics
{
/// <summary>
/// Encapsulates an OpenGL texture.
/// </summary>
class AlphaTexture2D : Texture2D
{
#region Constructors
/// <summary>
/// Constructs a new Texture.
/// </summary>
public AlphaTexture2D(int width, int height)
: base(width, height)
{ }
#endregion
#region Protected Members
protected override PixelInternalFormat InternalFormat
{
get { return PixelInternalFormat.Alpha; }
}
#endregion
}
}

44
Source/Compatibility/Graphics/GraphicsResourceException.cs Normal file
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#region License
//
// The Open Toolkit Library License
//
// Copyright (c) 2006 - 2008 the Open Toolkit library, except where noted.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do
// so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
//
#endregion
using System;
using System.Collections.Generic;
using System.Text;
namespace OpenTK.Graphics
{
/// <summary>
/// Represents exceptions related to IGraphicsResources.
/// </summary>
public class GraphicsResourceException : Exception
{
/// <summary>Constructs a new GraphicsResourceException.</summary>
public GraphicsResourceException() : base() { }
/// <summary>Constructs a new string with the specified error message.</summary>
public GraphicsResourceException(string message) : base(message) { }
}
}

49
Source/Compatibility/Graphics/IGraphicsResource.cs Normal file
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#region License
//
// The Open Toolkit Library License
//
// Copyright (c) 2006 - 2008 the Open Toolkit library, except where noted.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do
// so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
//
#endregion
using System;
using System.Collections.Generic;
using System.Text;
namespace OpenTK.Graphics
{
/// <summary>
/// Defines a common interface to all OpenGL resources.
/// </summary>
interface IGraphicsResource : IDisposable
{
/// <summary>
/// Gets the GraphicsContext that owns this resource.
/// </summary>
IGraphicsContext Context { get; }
/// <summary>
/// Gets the Id of this IGraphicsResource.
/// </summary>
int Id { get; }
}
}

159
Source/Compatibility/Graphics/ITextPrinter.cs Normal file
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#region --- License ---
/* Copyright (c) 2006, 2007 Stefanos Apostolopoulos
* See license.txt for license info
*/
#endregion
using System;
using System.Collections.Generic;
using System.Text;
using System.Drawing;
using OpenTK.Graphics.Text;
namespace OpenTK.Graphics
{
/// <summary>
/// Defines the interface for a TextPrinter.
/// </summary>
public interface ITextPrinter : IDisposable
{
#region Print
/// <summary>
/// Prints text using the specified color and layout options.
/// </summary>
/// <param name="text">The System.String to print.</param>
/// <param name="font">The System.Drawing.Font that will be used to print text.</param>
/// <param name="color">The System.Drawing.Color that will be used to print text.</param>
void Print(string text, Font font, Color color);
/// <summary>
/// Prints text using the specified color and layout options.
/// </summary>
/// <param name="text">The System.String to print.</param>
/// <param name="font">The System.Drawing.Font that will be used to print text.</param>
/// <param name="color">The System.Drawing.Color that will be used to print text.</param>
/// <param name="rect">The System.Drawing.Rectangle that defines the bounds for text layout.</param>
void Print(string text, Font font, Color color, RectangleF rect);
/// <summary>
/// Prints text using the specified color and layout options.
/// </summary>
/// <param name="text">The System.String to print.</param>
/// <param name="font">The System.Drawing.Font that will be used to print text.</param>
/// <param name="color">The System.Drawing.Color that will be used to print text.</param>
/// <param name="rect">The System.Drawing.Rectangle that defines the bounds for text layout.</param>
/// <param name="options">The OpenTK.Graphics.TextPrinterOptions that will be used to print text.</param>
void Print(string text, Font font, Color color, RectangleF rect, TextPrinterOptions options);
/// <summary>
/// Prints text using the specified color and layout options.
/// </summary>
/// <param name="text">The System.String to print.</param>
/// <param name="font">The System.Drawing.Font that will be used to print text.</param>
/// <param name="color">The System.Drawing.Color that will be used to print text.</param>
/// <param name="rect">The System.Drawing.Rectangle that defines the bounds for text layout.</param>
/// <param name="options">The OpenTK.Graphics.TextPrinterOptions that will be used to print text.</param>
/// <param name="alignment">The OpenTK.Graphics.TextAlignment that will be used to print text.</param>
void Print(string text, Font font, Color color, RectangleF rect, TextPrinterOptions options, TextAlignment alignment);
/// <summary>
/// Prints text using the specified color and layout options.
/// </summary>
/// <param name="text">The System.String to print.</param>
/// <param name="font">The System.Drawing.Font that will be used to print text.</param>
/// <param name="color">The System.Drawing.Color that will be used to print text.</param>
/// <param name="rect">The System.Drawing.Rectangle that defines the bounds for text layout.</param>
/// <param name="options">The OpenTK.Graphics.TextPrinterOptions that will be used to print text.</param>
/// <param name="alignment">The OpenTK.Graphics.TextAlignment that will be used to print text.</param>
/// <param name="direction">The OpenTK.Graphics.TextDirection that will be used to print text.</param>
void Print(string text, Font font, Color color, RectangleF rect, TextPrinterOptions options, TextAlignment alignment, TextDirection direction);
#endregion
#region Measure
/// <summary>
/// Measures text using the specified layout options.
/// </summary>
/// <param name="text">The System.String to measure.</param>
/// <param name="font">The System.Drawing.Font that will be used to measure text.</param>
/// <returns>An OpenTK.Graphics.TextExtents instance that contains the results of the measurement.</returns>
TextExtents Measure(string text, Font font);
/// <summary>
/// Measures text using the specified layout options.
/// </summary>
/// <param name="text">The System.String to measure.</param>
/// <param name="font">The System.Drawing.Font that will be used to measure text.</param>
/// <param name="rect">The System.Drawing.Rectangle that defines the bounds for text layout.</param>
/// <returns>An OpenTK.Graphics.TextExtents instance that contains the results of the measurement.</returns>
TextExtents Measure(string text, Font font, RectangleF rect);
/// <summary>
/// Measures text using the specified layout options.
/// </summary>
/// <param name="text">The System.String to measure.</param>
/// <param name="font">The System.Drawing.Font that will be used to measure text.</param>
/// <param name="rect">The System.Drawing.Rectangle that defines the bounds for text layout.</param>
/// <param name="options">The OpenTK.Graphics.TextPrinterOptions that will be used to measure text.</param>
/// <returns>An OpenTK.Graphics.TextExtents instance that contains the results of the measurement.</returns>
TextExtents Measure(string text, Font font, RectangleF rect, TextPrinterOptions options);
/// <summary>
/// Measures text using the specified layout options.
/// </summary>
/// <param name="text">The System.String to measure.</param>
/// <param name="font">The System.Drawing.Font that will be used to measure text.</param>
/// <param name="rect">The System.Drawing.Rectangle that defines the bounds for text layout.</param>
/// <param name="options">The OpenTK.Graphics.TextPrinterOptions that will be used to measure text.</param>
/// <param name="alignment">The OpenTK.Graphics.TextAlignment that will be used to measure text.</param>
/// <returns>An OpenTK.Graphics.TextExtents instance that contains the results of the measurement.</returns>
TextExtents Measure(string text, Font font, RectangleF rect, TextPrinterOptions options, TextAlignment alignment);
/// <summary>
/// Measures text using the specified layout options.
/// </summary>
/// <param name="text">The System.String to measure.</param>
/// <param name="font">The System.Drawing.Font that will be used to measure text.</param>
/// <param name="rect">The System.Drawing.Rectangle that defines the bounds for text layout.</param>
/// <param name="options">The OpenTK.Graphics.TextPrinterOptions that will be used to measure text.</param>
/// <param name="alignment">The OpenTK.Graphics.TextAlignment that will be used to measure text.</param>
/// <param name="direction">The OpenTK.Graphics.TextDirection that will be used to measure text.</param>
/// <returns>An OpenTK.Graphics.TextExtents instance that contains the results of the measurement.</returns>
TextExtents Measure(string text, Font font, RectangleF rect, TextPrinterOptions options, TextAlignment alignment, TextDirection direction);
#endregion
#region Begin
/// <summary>
/// Sets up a resolution-dependent orthographic projection.
/// </summary>
void Begin();
#endregion
#region End
/// <summary>
/// Restores the projection and modelview matrices to their previous state.
/// </summary>
void End();
#endregion
#region Obsolete
[Obsolete("Use TextPrinter.Print instead")]
void Draw(TextHandle handle);
[Obsolete("Use TextPrinter.Print instead")]
void Draw(string text, TextureFont font);
[Obsolete("Use TextPrinter.Print instead")]
void Prepare(string text, TextureFont font, out TextHandle handle);
#endregion
}
}

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Source/Compatibility/Graphics/RgbaTexture2D.cs Normal file
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#region License
//
// The Open Toolkit Library License
//
// Copyright (c) 2006 - 2008 the Open Toolkit library, except where noted.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do
// so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
//
#endregion
using System;
using System.Collections.Generic;
using System.Text;
using OpenTK.Graphics.OpenGL;
namespace OpenTK.Graphics
{
class RgbaTexture2D : Texture2D
{
public RgbaTexture2D(int width, int height)
: base(width, height)
{ }
protected override PixelInternalFormat InternalFormat
{
get { return PixelInternalFormat.Rgba; }
}
}
}

62
Source/Compatibility/Graphics/Text/CachedGlyphInfo.cs Normal file
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#region License
//
// The Open Toolkit Library License
//
// Copyright (c) 2006 - 2008 the Open Toolkit library, except where noted.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do
// so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
//
#endregion
using System;
using System.Collections.Generic;
using System.Text;
using System.Drawing;
namespace OpenTK.Graphics.Text
{
struct CachedGlyphInfo
{
public readonly Texture2D Texture;
public readonly RectangleF RectangleNormalized;
public Rectangle Rectangle
{
get
{
return new Rectangle(
(int)(RectangleNormalized.X * Texture.Width),
(int)(RectangleNormalized.Y * Texture.Height),
(int)(RectangleNormalized.Width * Texture.Width),
(int)(RectangleNormalized.Height * Texture.Height));
}
}
// Rect denotes the absolute position of the glyph in the texture [0, Texture.Width], [0, Texture.Height].
public CachedGlyphInfo(Texture2D texture, Rectangle rect)
{
Texture = texture;
RectangleNormalized = new RectangleF(
rect.X / (float)texture.Width,
rect.Y / (float)texture.Height,
rect.Width / (float)texture.Width,
rect.Height / (float)texture.Height);
}
}
}

64
Source/Compatibility/Graphics/Text/GL11TextOutputProvider.cs Normal file
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using System;
using System.Collections.Generic;
using System.Text;
using System.Drawing;
using OpenTK.Graphics.OpenGL;
namespace OpenTK.Graphics.Text
{
sealed class GL11TextOutputProvider : GL1TextOutputProvider
{
#region Fields
TextQuality quality;
GlyphCache cache;
#endregion
#region Constuctors
public GL11TextOutputProvider(TextQuality quality)
{
if (quality == TextQuality.High || quality == TextQuality.Default)
this.quality = TextQuality.Medium;
else
this.quality = quality;
}
#endregion
#region Protected Members
protected override void SetBlendFunction()
{
GL.BlendFunc(BlendingFactorSrc.SrcAlpha, BlendingFactorDest.OneMinusSrcAlpha); // For grayscale
}
protected override void SetColor(Color color)
{
GL.Color3(color);
}
protected override TextQuality TextQuality
{
get { return quality; }
}
protected override GlyphCache Cache
{
get
{
if (cache == null)
{
if (GL.GetString(StringName.Renderer).Contains("ProSavage/Twister"))
cache = new GlyphCache<RgbaTexture2D>();
else
cache = new GlyphCache<AlphaTexture2D>();
}
return cache;
}
}
#endregion
}
}

51
Source/Compatibility/Graphics/Text/GL12TextOutputProvider.cs Normal file
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using System;
using System.Collections.Generic;
using System.Text;
using System.Drawing;
using OpenTK.Graphics.OpenGL;
namespace OpenTK.Graphics.Text
{
sealed class GL12TextOutputProvider : GL1TextOutputProvider
{
#region Fields
TextQuality quality;
GlyphCache cache;
#endregion
#region Constuctors
public GL12TextOutputProvider(TextQuality quality)
{
this.quality = quality;
cache = new GlyphCache<RgbaTexture2D>();
}
#endregion
protected override void SetBlendFunction()
{
GL.BlendFunc(BlendingFactorSrc.ConstantColorExt, BlendingFactorDest.OneMinusSrcColor);
}
protected override void SetColor(Color color)
{
GL.Color3(Color.White);
GL.BlendColor(color);
}
protected override TextQuality TextQuality
{
get { return quality; }
}
protected override GlyphCache Cache
{
get { return cache; }
}
}
}

339
Source/Compatibility/Graphics/Text/GL1TextOutputProvider.cs Normal file
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#region License
//
// The Open Toolkit Library License
//
// Copyright (c) 2006 - 2008 the Open Toolkit library, except where noted.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do
// so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
//
#endregion
using System;
using System.Collections.Generic;
using System.Drawing;
using OpenTK.Graphics.OpenGL;
namespace OpenTK.Graphics.Text
{
abstract class GL1TextOutputProvider : ITextOutputProvider
{
#region Fields
// Triangle lists, sorted by texture.
Dictionary<Texture2D, List<Vector2>> active_lists = new Dictionary<Texture2D, List<Vector2>>();
Queue<List<Vector2>> inactive_lists = new Queue<List<Vector2>>();
#pragma warning disable 0649
struct Viewport { public int X, Y, Width, Height; }
#pragma warning restore 0649
// Used to save the current state in Begin() and restore it in End()
Stack<Matrix4> projection_stack = new Stack<Matrix4>();
Stack<Matrix4> modelview_stack = new Stack<Matrix4>();
Stack<Matrix4> texture_stack = new Stack<Matrix4>();
Stack<Viewport> viewport_stack = new Stack<Viewport>();
// Used as temporary storage when saving / restoring the current state.
Viewport viewport = new Viewport();
Matrix4 matrix = new Matrix4();
// TextBlock - display list cache.
// Todo: we need a cache eviction strategy.
const int block_cache_capacity = 32;
readonly Dictionary<int, int> block_cache = new Dictionary<int, int>(block_cache_capacity);
bool disposed;
#endregion
#region Constructors
public GL1TextOutputProvider()
{
inactive_lists.Enqueue(new List<Vector2>());
}
#endregion
#region ITextOutputProvider Members
#region Print
public void Print(ref TextBlock block, Color color, IGlyphRasterizer rasterizer)
{
GL.PushAttrib(AttribMask.CurrentBit | AttribMask.TextureBit | AttribMask.EnableBit | AttribMask.ColorBufferBit | AttribMask.DepthBufferBit);
GL.Enable(EnableCap.Texture2D);
GL.Enable(EnableCap.Blend);
SetBlendFunction();
GL.Disable(EnableCap.DepthTest);
GL.TexEnv(TextureEnvTarget.TextureEnv, TextureEnvParameter.TextureEnvMode, (int)All.Modulate);
GL.TexEnv(TextureEnvTarget.TextureEnv, TextureEnvParameter.TextureEnvColor, new Color4(0, 0, 0, 0));
GL.Disable(EnableCap.TextureGenQ);
GL.Disable(EnableCap.TextureGenR);
GL.Disable(EnableCap.TextureGenS);
GL.Disable(EnableCap.TextureGenT);
RectangleF position;
SetColor(color);
int block_hash = block.GetHashCode();
if (block_cache.ContainsKey(block_hash))
{
GL.CallList(block_cache[block_hash]);
}
else
{
using (TextExtents extents = rasterizer.MeasureText(ref block))
{
// Build layout
int current = 0;
foreach (Glyph glyph in block)
{
// Do not render whitespace characters or characters outside the clip rectangle.
if (glyph.IsWhiteSpace || extents[current].Width == 0 || extents[current].Height == 0)
{
current++;
continue;
}
else if (!Cache.Contains(glyph))
Cache.Add(glyph, rasterizer, TextQuality);
CachedGlyphInfo info = Cache[glyph];
position = extents[current++];
// Use the real glyph width instead of the measured one (we want to achieve pixel perfect output).
position.Size = info.Rectangle.Size;
if (!active_lists.ContainsKey(info.Texture))
{
if (inactive_lists.Count > 0)
{
List<Vector2> list = inactive_lists.Dequeue();
list.Clear();
active_lists.Add(info.Texture, list);
}
else
{
active_lists.Add(info.Texture, new List<Vector2>());
}
}
{
// Interleaved array: Vertex, TexCoord, Vertex, ...
List<Vector2> current_list = active_lists[info.Texture];
current_list.Add(new Vector2(info.RectangleNormalized.Left, info.RectangleNormalized.Top));
current_list.Add(new Vector2(position.Left, position.Top));
current_list.Add(new Vector2(info.RectangleNormalized.Left, info.RectangleNormalized.Bottom));
current_list.Add(new Vector2(position.Left, position.Bottom));
current_list.Add(new Vector2(info.RectangleNormalized.Right, info.RectangleNormalized.Bottom));
current_list.Add(new Vector2(position.Right, position.Bottom));
current_list.Add(new Vector2(info.RectangleNormalized.Right, info.RectangleNormalized.Bottom));
current_list.Add(new Vector2(position.Right, position.Bottom));
current_list.Add(new Vector2(info.RectangleNormalized.Right, info.RectangleNormalized.Top));
current_list.Add(new Vector2(position.Right, position.Top));
current_list.Add(new Vector2(info.RectangleNormalized.Left, info.RectangleNormalized.Top));
current_list.Add(new Vector2(position.Left, position.Top));
}
}
}
// Render
int display_list = 0;
if ((block.Options & TextPrinterOptions.NoCache) == 0)
{
display_list = GL.GenLists(1);
// Mesa Indirect gerates an InvalidOperation error right after
// GL.EndList() when using ListMode.CompileAndExecute.
// Using ListMode.Compile as a workaround.
GL.NewList(display_list, ListMode.Compile);
}
foreach (Texture2D key in active_lists.Keys)
{
List<Vector2> list = active_lists[key];
key.Bind();
GL.Begin(BeginMode.Triangles);
for (int i = 0; i < list.Count; i += 2)
{
GL.TexCoord2(list[i]);
GL.Vertex2(list[i + 1]);
}
GL.End();
}
if ((block.Options & TextPrinterOptions.NoCache) == 0)
{
GL.EndList();
block_cache.Add(block_hash, display_list);
GL.CallList(display_list);
}
// Clean layout
foreach (List<Vector2> list in active_lists.Values)
{
//list.Clear();
inactive_lists.Enqueue(list);
}
active_lists.Clear();
}
GL.PopAttrib();
}
#endregion
#region Clear
public void Clear()
{
Cache.Clear();
foreach (int display_list in block_cache.Keys)
GL.DeleteLists(display_list, 1);
block_cache.Clear();
}
#endregion
#region Begin
public void Begin()
{
if (disposed)
throw new ObjectDisposedException(this.GetType().ToString());
GraphicsContext.Assert();
// Save the state of everything we are going to modify:
// the current matrix mode, viewport state and the projection, modelview and texture matrices.
// All these will be restored in the TextPrinter.End() method.
int current_matrix;
GL.GetInteger(GetPName.MatrixMode, out current_matrix);
GL.GetInteger(GetPName.Viewport, out viewport.X);
viewport_stack.Push(viewport);
GL.GetFloat(GetPName.ProjectionMatrix, out matrix.Row0.X);
projection_stack.Push(matrix);
GL.GetFloat(GetPName.ModelviewMatrix, out matrix.Row0.X);
modelview_stack.Push(matrix);
GL.GetFloat(GetPName.TextureMatrix, out matrix.Row0.X);
texture_stack.Push(matrix);
// Prepare to draw text. We want pixel perfect precision, so we setup a 2D mode,
// with size equal to the window (in pixels).
// While we could also render text in 3D mode, it would be very hard to get
// pixel-perfect precision.
GL.MatrixMode(MatrixMode.Projection);
GL.LoadIdentity();
GL.Ortho(viewport.X, viewport.Width, viewport.Height, viewport.Y, -1.0, 1.0);
GL.MatrixMode(MatrixMode.Modelview);
GL.LoadIdentity();
GL.MatrixMode(MatrixMode.Texture);
GL.LoadIdentity();
GL.MatrixMode((MatrixMode)current_matrix);
}
#endregion
#region End
public void End()
{
if (disposed)
throw new ObjectDisposedException(this.GetType().ToString());
GraphicsContext.Assert();
int current_matrix;
GL.GetInteger(GetPName.MatrixMode, out current_matrix);
viewport = viewport_stack.Pop();
GL.Viewport(viewport.X, viewport.Y, viewport.Width, viewport.Height);
GL.MatrixMode(MatrixMode.Texture);
matrix = texture_stack.Pop();
GL.LoadMatrix(ref matrix);
GL.MatrixMode(MatrixMode.Modelview);
matrix = modelview_stack.Pop();
GL.LoadMatrix(ref matrix);
GL.MatrixMode(MatrixMode.Projection);
matrix = projection_stack.Pop();
GL.LoadMatrix(ref matrix);
GL.MatrixMode((MatrixMode)current_matrix);
}
#endregion
#endregion
#region Protected Members
protected abstract void SetBlendFunction();
protected abstract void SetColor(Color color);
protected abstract TextQuality TextQuality { get; }
protected abstract GlyphCache Cache { get; }
#endregion
#region Static Members
public static GL1TextOutputProvider Create(TextQuality quality)
{
if (!GL.SupportsExtension("Version12") || !GL.SupportsFunction("BlendColor") || quality == TextQuality.Low || quality == TextQuality.Medium)
return new GL11TextOutputProvider(quality);
else
return new GL12TextOutputProvider(quality);
}
#endregion
#region IDisposable Members
public void Dispose()
{
if (!disposed)
{
Cache.Dispose();
disposed = true;
}
}
#endregion
}
}

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#region License
//
// The Open Toolkit Library License
//
// Copyright (c) 2006 - 2008 the Open Toolkit library, except where noted.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do
// so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
//
#endregion
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Drawing;
using System.Drawing.Imaging;
using System.Drawing.Text;
using OpenTK.Platform;
namespace OpenTK.Graphics.Text
{
sealed class GdiPlusGlyphRasterizer : IGlyphRasterizer
{
#region Fields
// Note: as an optimization, we store the TextBlock hashcode instead of the TextBlock itself.
Dictionary<int, TextExtents> block_cache = new Dictionary<int, TextExtents>();
System.Drawing.Graphics graphics = System.Drawing.Graphics.FromImage(new Bitmap(1, 1));
IntPtr[] regions = new IntPtr[GdiPlus.MaxMeasurableCharacterRanges];
CharacterRange[] characterRanges = new CharacterRange[GdiPlus.MaxMeasurableCharacterRanges];
Bitmap glyph_surface;
System.Drawing.Graphics glyph_renderer;
readonly List<RectangleF> measured_glyphs = new List<RectangleF>(256);
readonly ObjectPool<PoolableTextExtents> text_extents_pool = new ObjectPool<PoolableTextExtents>();
// Check the constructor, too, for additional flags.
// Used for measuring text. Can set the leftToRight, rightToLeft, vertical and measure trailing spaces flags.
readonly StringFormat measure_string_format = new StringFormat(StringFormat.GenericDefault);
readonly StringFormat measure_string_format_tight = new StringFormat(StringFormat.GenericTypographic);
// Used for loading glyphs. Only use leftToRight!
readonly StringFormat load_glyph_string_format = new StringFormat(StringFormat.GenericDefault);
readonly StringFormat load_glyph_string_format_tight = new StringFormat(StringFormat.GenericTypographic);
static readonly char[] newline_characters = new char[] { '\n', '\r' };
static readonly SizeF MaximumGraphicsClipSize;
#endregion
#region Constructors
static GdiPlusGlyphRasterizer()
{
using (Bitmap bmp = new Bitmap(1, 1))
using (System.Drawing.Graphics gfx = System.Drawing.Graphics.FromImage(bmp))
{
MaximumGraphicsClipSize = gfx.ClipBounds.Size;
}
}
public GdiPlusGlyphRasterizer()
{
measure_string_format.FormatFlags |= StringFormatFlags.MeasureTrailingSpaces | StringFormatFlags.NoClip;
measure_string_format_tight.FormatFlags |= StringFormatFlags.MeasureTrailingSpaces;
}
#endregion
#region IGlyphRasterizer Members
#region Rasterize
public Bitmap Rasterize(Glyph glyph)
{
return Rasterize(glyph, TextQuality.Default);
}
public Bitmap Rasterize(Glyph glyph, TextQuality quality)
{
EnsureSurfaceSize(ref glyph_surface, ref glyph_renderer, glyph.Font);
SetTextRenderingOptions(glyph_renderer, glyph.Font, quality);
RectangleF r2 = new RectangleF();
glyph_renderer.Clear(Color.Transparent);
glyph_renderer.DrawString(glyph.Character.ToString(), glyph.Font, Brushes.White, Point.Empty, //new Point(glyph_surface.Width, 0),
glyph.Font.Style == FontStyle.Italic ? load_glyph_string_format : load_glyph_string_format_tight);
r2 = FindEdges(glyph_surface, true);
//if ((default_string_format.FormatFlags & StringFormatFlags.DirectionRightToLeft) != 0)
//{
// glyph_renderer.DrawString(glyph.Character.ToString(), glyph.Font, Brushes.White, Point.Empty, //new Point(glyph_surface.Width, 0),
// load_glyph_string_format);//glyph.Font.Style == FontStyle.Italic ? load_glyph_string_format : default_string_format);
// r2 = FindEdges(glyph_surface, true);
//}
//else
//{
// glyph_renderer.DrawString(glyph.Character.ToString(), glyph.Font, Brushes.White, Point.Empty,
// load_glyph_string_format_tight); //glyph.Font.Style == FontStyle.Italic ? load_glyph_string_format : default_string_format);
// r2 = FindEdges(glyph_surface, false);
//}
return glyph_surface.Clone(r2, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
}
#endregion
#region MeasureText
public TextExtents MeasureText(ref TextBlock block)
{
return MeasureText(ref block, TextQuality.Default);
}
public TextExtents MeasureText(ref TextBlock block, TextQuality quality)
{
// First, check if we have cached this text block. Do not use block_cache.TryGetValue, to avoid thrashing
// the user's TextBlockExtents struct.
int hashcode = block.GetHashCode();
if (block_cache.ContainsKey(hashcode))
return block_cache[hashcode];
// If this block is not cached, we have to measure it and (potentially) place it in the cache.
TextExtents extents = MeasureTextExtents(ref block, quality);
if ((block.Options & TextPrinterOptions.NoCache) == 0)
block_cache.Add(hashcode, extents);
return extents;
}
#endregion
#region Clear
public void Clear()
{
block_cache.Clear();
}
#endregion
#endregion
#region Private Members
#region EnsureSurfaceSize
void EnsureSurfaceSize(ref Bitmap bmp, ref System.Drawing.Graphics gfx, Font font)
{
if (bmp == null || bmp.Width < 2 * font.Size || bmp.Height < 2 * font.Size)
{
if (bmp != null)
bmp.Dispose();
if (gfx != null)
gfx.Dispose();
bmp = new Bitmap((int)(2 * font.Size), (int)(2 * font.Size));
gfx = System.Drawing.Graphics.FromImage(bmp);
}
}
#endregion
#region SetRenderingOptions
// Modify rendering settings (antialiasing, grid fitting) to improve appearance.
void SetTextRenderingOptions(System.Drawing.Graphics gfx, Font font, TextQuality quality)
{
switch (quality)
{
case TextQuality.Default:
gfx.TextRenderingHint = TextRenderingHint.SystemDefault;
break;
case TextQuality.High:
gfx.TextRenderingHint = TextRenderingHint.ClearTypeGridFit;
break;
case TextQuality.Medium:
if (font.Size <= 18.0f)
gfx.TextRenderingHint = TextRenderingHint.AntiAliasGridFit;
else
gfx.TextRenderingHint = TextRenderingHint.AntiAlias;
break;
case TextQuality.Low:
if (font.Size <= 18.0f)
gfx.TextRenderingHint = TextRenderingHint.SingleBitPerPixelGridFit;
else
gfx.TextRenderingHint = TextRenderingHint.SingleBitPerPixel;
break;
}
}
#endregion
#region MeasureTextExtents
TextExtents MeasureTextExtents(ref TextBlock block, TextQuality quality)
{
// Todo: Parse layout options:
StringFormat format = block.Font.Italic ? measure_string_format : measure_string_format_tight;
//StringFormat format = measure_string_format_tight;
if (block.Direction == TextDirection.Vertical)
format.FormatFlags |= StringFormatFlags.DirectionVertical;
else
format.FormatFlags &= ~StringFormatFlags.DirectionVertical;
if (block.Direction == TextDirection.RightToLeft)
format.FormatFlags |= StringFormatFlags.DirectionRightToLeft;
else
format.FormatFlags &= ~StringFormatFlags.DirectionRightToLeft;
if (block.Alignment == TextAlignment.Near)
format.Alignment = StringAlignment.Near;
else if (block.Alignment == TextAlignment.Center)
format.Alignment = StringAlignment.Center;
else
format.Alignment = StringAlignment.Far;
TextExtents extents = text_extents_pool.Acquire();
RectangleF rect = block.Bounds;
// Work around Mono/GDI+ bug, which causes incorrect
// text wraping when block.Bounds == SizeF.Empty.
if (block.Bounds.Size == SizeF.Empty)
rect.Size = MaximumGraphicsClipSize;
SetTextRenderingOptions(graphics, block.Font, quality);
IntPtr native_graphics = GdiPlus.GetNativeGraphics(graphics);
IntPtr native_font = GdiPlus.GetNativeFont(block.Font);
IntPtr native_string_format = GdiPlus.GetNativeStringFormat(format);
float max_width = 0, max_height = 0;
// It seems that the mere presence of \n and \r characters
// is enough for Mono to botch the layout (even if these
// characters are not processed.) We'll need to find a
// different way to perform layout on Mono, probably
// through Pango.
// Todo: This workaround allocates memory.
//if (Configuration.RunningOnMono)
{
string[] lines = block.Text.Replace("\r", String.Empty).Split('\n');
foreach (string s in lines)
{
float width, height;
extents.AddRange(MeasureGlyphExtents(
ref block, s,
native_graphics, native_font, native_string_format,
ref rect, out width, out height));
if ((block.Direction & TextDirection.Vertical) == 0)
rect.Y += block.Font.Height;
else
rect.X += block.Font.Height;
if (width > max_width)
max_width = width;
if (height > max_height)
max_height = height;
}
}
if (extents.Count > 0)
extents.BoundingBox = new RectangleF(extents[0].X, extents[0].Y, max_width, max_height);
else
extents.BoundingBox = RectangleF.Empty;
return extents;
}
#endregion
#region MeasureGlyphExtents
// Gets the bounds of each character in a line of text.
// Each line is processed in blocks of 32 characters (GdiPlus.MaxMeasurableCharacterRanges).
IEnumerable<RectangleF> MeasureGlyphExtents(
ref TextBlock block, string text,
IntPtr native_graphics, IntPtr native_font, IntPtr native_string_format,
ref RectangleF layoutRect, out float max_width, out float max_height)
{
measured_glyphs.Clear();
max_width = layoutRect.Left;
max_height = layoutRect.Top;
float last_line_width = 0, last_line_height = 0;
int current = 0;
while (current < text.Length)
{
int num_characters = (text.Length - current) > GdiPlus.MaxMeasurableCharacterRanges ?
GdiPlus.MaxMeasurableCharacterRanges :
text.Length - current;
int status = 0;
// Prepare the character ranges and region structs for the measurement.
for (int i = 0; i < num_characters; i++)
{
if (text[current + i] == '\n' || text[current + i] == '\r')
throw new NotSupportedException();
characterRanges[i] = new CharacterRange(current + i, 1);
IntPtr region;
status = GdiPlus.CreateRegion(out region);
regions[i] = region;
Debug.Assert(status == 0, String.Format("GDI+ error: {0}", status));
}
status = GdiPlus.SetStringFormatMeasurableCharacterRanges(native_string_format, num_characters, characterRanges);
Debug.Assert(status == 0, String.Format("GDI+ error: {0}", status));
status = GdiPlus.MeasureCharacterRanges(native_graphics, text, text.Length,
native_font, ref layoutRect, native_string_format, num_characters, regions);
Debug.Assert(status == 0, String.Format("GDI+ error: {0}", status));
// Read back the results of the measurement.
for (int i = 0; i < num_characters; i++)
{
RectangleF rect = new RectangleF();
GdiPlus.GetRegionBounds(regions[i], native_graphics, ref rect);
Debug.Assert(status == 0, String.Format("GDI+ error: {0}", status));
GdiPlus.DeleteRegion(regions[i]);
Debug.Assert(status == 0, String.Format("GDI+ error: {0}", status));
if (rect.Bottom > max_height)
max_height = rect.Bottom;
if (rect.Right > max_width)
max_width = rect.Right;
if (rect.X > last_line_width)
last_line_width = rect.X;
if (rect.Y > last_line_height)
last_line_height = rect.Y;
measured_glyphs.Add(rect);
}
current += num_characters;
}
// Make sure the current height is updated, if the the current line has wrapped due to word-wraping.
// Otherwise, the next line will overlap with the current one.
if (measured_glyphs.Count > 1)
{
if ((block.Direction & TextDirection.Vertical) == 0)
{
if (layoutRect.Y < last_line_height)
layoutRect.Y = last_line_height;
}
else
{
if (layoutRect.X < last_line_width)
layoutRect.X = last_line_width;
}
}
// Mono's GDI+ implementation suffers from an issue where the specified layoutRect is not taken into
// account. We will try to improve the situation by moving text to the correct location on this
// error condition. This will not help word wrapping, but it is better than nothing.
// Todo: Mono 2.8 is supposed to ship with a Pango-based GDI+ text renderer, which should not
// suffer from this bug. Verify that this is the case and remove the hack.
if (Configuration.RunningOnMono && (layoutRect.X != 0 || layoutRect.Y != 0) && measured_glyphs.Count > 0)
{
for (int i = 0; i < measured_glyphs.Count; i++)
{
RectangleF rect = measured_glyphs[i];
rect.X += layoutRect.X;
rect.Y += layoutRect.Y;
measured_glyphs[i] = rect;
}
}
return measured_glyphs;
}
#endregion
#region FindEdges
#pragma warning disable 0649
struct Pixel { public byte B, G, R, A; }
#pragma warning restore 0649
// Note: The bool parameter is not used at this point.
// We might need it if we ever load true rightToLeft glyphs.
Rectangle FindEdges(Bitmap bmp, bool rightToLeft)
{
BitmapData data = bmp.LockBits(
new Rectangle(0, 0, bmp.Width, bmp.Height),
ImageLockMode.ReadOnly,
System.Drawing.Imaging.PixelFormat.Format32bppArgb);
//Rectangle rect = rightToLeft ?
// Rectangle.FromLTRB(FindLeftEdge(bmp, data.Scan0), 0, bmp.Width - 1, FindBottomEdge(bmp, data.Scan0)) :
// Rectangle.FromLTRB(0, 0, FindRightEdge(bmp, data.Scan0), FindBottomEdge(bmp, data.Scan0));
Rectangle rect =
Rectangle.FromLTRB(0, 0, FindRightEdge(bmp, data.Scan0), FindBottomEdge(bmp, data.Scan0));
//Rectangle.FromLTRB(FindLeftEdge(bmp, data.Scan0), 0, FindRightEdge(bmp, data.Scan0), FindBottomEdge(bmp, data.Scan0));
bmp.UnlockBits(data);
return rect;
}
#endregion
#region Find[Left|Right|Top|Bottom]Edge
// Iterates through the bmp, and returns the first row or line that contains a non-transparent pixels.
int FindLeftEdge(Bitmap bmp, IntPtr ptr)
{
for (int x = 0; x < bmp.Width; x++)
for (int y = 0; y < bmp.Height; y++)
unsafe
{
if (((Pixel*)(ptr) + y * bmp.Width + x)->A != 0)
return x;
}
return bmp.Width - 1;
}
int FindRightEdge(Bitmap bmp, IntPtr ptr)
{
for (int x = bmp.Width - 1; x >= 0; x--)
for (int y = 0; y < bmp.Height; y++)
unsafe
{
if (((Pixel*)(ptr) + y * bmp.Width + x)->A != 0)
return x + 1;
}
return 0;
}
int FindTopEdge(Bitmap bmp, IntPtr ptr)
{
for (int y = 0; y < bmp.Height; y++)
for (int x = 0; x < bmp.Width; x++)
unsafe
{
if (((Pixel*)(ptr) + y * bmp.Width + x)->A != 0)
return y;
}
return bmp.Height - 1;
}
int FindBottomEdge(Bitmap bmp, IntPtr ptr)
{
for (int y = bmp.Height - 1; y >= 0; y--)
for (int x = 0; x < bmp.Width; x++)
unsafe
{
if (((Pixel*)(ptr) + y * bmp.Width + x)->A != 0)
return y + 1;
}
return 0;
}
#endregion
#endregion
}
}

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#region License
//
// The Open Toolkit Library License
//
// Copyright (c) 2006 - 2008 the Open Toolkit library, except where noted.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do
// so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
//
#endregion
using System;
using System.Collections.Generic;
using System.Text;
using System.Drawing;
namespace OpenTK.Graphics.Text
{
struct Glyph : IEquatable<Glyph>
{
char character;
Font font;
#region Constructors
/// <summary>
/// Constructs a new Glyph that represents the given character and Font.
/// </summary>
/// <param name="c">The character to represent.</param>
/// <param name="font">The Font of the character.</param>
public Glyph(char c, Font font)
{
if (font == null)
throw new ArgumentNullException("font");
character = c;
this.font = font;
}
#endregion
#region Public Methods
#region public char Character
/// <summary>
/// Gets the character represented by this Glyph.
/// </summary>
public char Character
{
get { return character; }
private set { character = value; }
}
#endregion
#region public Font Font
/// <summary>
/// Gets the Font of this Glyph.
/// </summary>
public Font Font
{
get { return font; }
private set
{
if (value == null)
throw new ArgumentNullException("Font", "Glyph font cannot be null");
font = value;
}
}
#endregion
#region public bool IsWhiteSpace
public bool IsWhiteSpace
{
get { return Char.IsWhiteSpace(Character); }
}
#endregion
#region public override bool Equals(object obj)
/// <summary>
/// Checks whether the given object is equal (memberwise) to the current Glyph.
/// </summary>
/// <param name="obj">The obj to check.</param>
/// <returns>True, if the object is identical to the current Glyph.</returns>
public override bool Equals(object obj)
{
if (obj is Glyph)
return this.Equals((Glyph)obj);
return base.Equals(obj);
}
#endregion
#region public override string ToString()
/// <summary>
/// Describes this Glyph object.
/// </summary>
/// <returns>Returns a System.String describing this Glyph.</returns>
public override string ToString()
{
return String.Format("'{0}', {1} {2}, {3} {4}", Character, Font.Name, font.Style, font.Size, font.Unit);
}
#endregion
#region public override int GetHashCode()
/// <summary>
/// Calculates the hashcode for this Glyph.
/// </summary>
/// <returns>A System.Int32 containing a hashcode that uniquely identifies this Glyph.</returns>
public override int GetHashCode()
{
return character.GetHashCode() ^ font.GetHashCode();
}
#endregion
#endregion
#region IEquatable<Glyph> Members
public bool Equals(Glyph other)
{
return Character == other.Character && Font == other.Font;
}
#endregion
}
}

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#region License
//
// The Open Toolkit Library License
//
// Copyright (c) 2006 - 2008 the Open Toolkit library, except where noted.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do
// so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
//
#endregion
using System;
using System.Collections.Generic;
using System.Drawing;
namespace OpenTK.Graphics.Text
{
abstract class GlyphCache : IGlyphCache
{
#region IGlyphCache Members
public abstract void Add(Glyph glyph, IGlyphRasterizer rasterizer, TextQuality quality);
public abstract bool Contains(Glyph glyph);
public abstract CachedGlyphInfo this[Glyph glyph] { get; }
public abstract void Clear();
public abstract void Dispose();
#endregion
}
sealed class GlyphCache<T> : GlyphCache where T : Texture2D
{
#region Fields
List<GlyphSheet<T>> sheets = new List<GlyphSheet<T>>();
Dictionary<Glyph, CachedGlyphInfo> cached_glyphs = new Dictionary<Glyph, CachedGlyphInfo>();
bool disposed;
const int SheetWidth = 512, SheetHeight = 512;
#endregion
#region Constructors
public GlyphCache()
{
sheets.Add(new GlyphSheet<T>(SheetWidth, SheetHeight));
}
#endregion
#region IGlyphCache Members
public override void Add(Glyph glyph, IGlyphRasterizer rasterizer, TextQuality quality)
{
if (rasterizer == null)
throw new ArgumentNullException("rasterizer");
bool inserted = false;
using (Bitmap bmp = rasterizer.Rasterize(glyph, quality))
{
Rectangle rect = new Rectangle(0, 0, bmp.Width, bmp.Height);
foreach (GlyphSheet<T> sheet in sheets)
{
inserted = InsertGlyph(glyph, bmp, rect, sheet);
if (inserted)
break;
}
if (!inserted)
{
GlyphSheet<T> sheet = new GlyphSheet<T>(SheetWidth, SheetHeight);
sheets.Add(sheet);
InsertGlyph(glyph, bmp, rect, sheet);
}
}
}
public override bool Contains(Glyph glyph)
{
return cached_glyphs.ContainsKey(glyph);
}
public override CachedGlyphInfo this[Glyph glyph]
{
get
{
return cached_glyphs[glyph];
}
}
public override void Clear()
{
for (int i = 0; i < sheets.Count; i++)
sheets[i].Dispose();
sheets.Clear();
}
#endregion
#region Private Members
// Asks the packer for an empty space and writes the glyph there.
bool InsertGlyph(Glyph glyph, Bitmap bmp, Rectangle source, GlyphSheet<T> sheet)
{
Rectangle target = new Rectangle();
if (!sheet.Packer.TryAdd(source, out target))
return false;
sheet.Texture.WriteRegion(source, target, 0, bmp);
cached_glyphs.Add(glyph, new CachedGlyphInfo(sheet.Texture, target));
return true;
}
#endregion
#region IDisposable Members
public override void Dispose()
{
if (!disposed)
{
Clear();
disposed = true;
}
}
#endregion
}
}

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#region License
//
// The Open Toolkit Library License
//
// Copyright (c) 2006 - 2008 the Open Toolkit library, except where noted.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do
// so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
//
#endregion
using System;
using System.Collections.Generic;
using System.Text;
using System.Drawing;
namespace OpenTK.Graphics.Text
{
class GlyphEnumerator : IEnumerator<Glyph>
{
#region Fields
string text;
Font font;
IEnumerator<char> implementation;
#endregion
#region Constructors
public GlyphEnumerator(string text, Font font)
{
if (text == null)
throw new ArgumentNullException("text");
if (font == null)
throw new ArgumentNullException("font");
this.text = text;
this.font = font;
implementation = text.GetEnumerator();
}
#endregion
#region IEnumerator<Glyph> Members
public Glyph Current
{
get { return new Glyph(implementation.Current, font); }
}
#endregion
#region IDisposable Members
public void Dispose()
{
implementation.Dispose();
}
#endregion
#region IEnumerator Members
object System.Collections.IEnumerator.Current
{
get { return new Glyph(implementation.Current, font); }
}
public bool MoveNext()
{
bool status;
do
{
status = implementation.MoveNext();
} while (status && (implementation.Current == '\n' || implementation.Current == '\r'));
return status;
}
public void Reset()
{
implementation.Reset();
}
#endregion
}
}

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#region License
//
// The Open Toolkit Library License
//
// Copyright (c) 2006 - 2008 the Open Toolkit library, except where noted.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do
// so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
//
#endregion
using System;
using System.Collections.Generic;
using System.Text;
using System.Drawing;
namespace OpenTK.Graphics.Text
{
class GlyphPacker
{
Node root;
#region --- Constructors ---
public GlyphPacker(int width, int height)
{
if (width <= 0)
throw new ArgumentOutOfRangeException("width", width, "Must be greater than zero.");
if (height <= 0)
throw new ArgumentOutOfRangeException("height", height, "Must be greater than zero.");
root = new Node();
root.Rectangle = new Rectangle(0, 0, width, width);
}
#endregion
#region --- Public Methods ---
#region public bool TryAdd(Rectangle boundingBox)
/// <summary>
/// Adds boundingBox to the GlyphPacker.
/// </summary>
/// <param name="boundingBox">The bounding box of the item to pack.</param>
/// <param name="packedRectangle">The System.Drawing.Rectangle that contains the position of the packed item.</param>
/// <returns>True, if the item was successfully packed; false if the item is too big for this packer..</returns>
/// <exception cref="InvalidOperationException">Occurs if the item is larger than the available TexturePacker area</exception>
/// <exception cref="TexturePackerFullException">Occurs if the item cannot fit in the remaining packer space.</exception>
public bool TryAdd(Rectangle boundingBox, out Rectangle packedRectangle)
{
if (!root.Rectangle.Contains(boundingBox))
{
packedRectangle = new Rectangle();
return false;
}
// Increase size so that the glyphs do not touch each other (to avoid rendering artifacts).
boundingBox.Width += 2;
boundingBox.Height += 2;
Node node = root.Insert(boundingBox);
// Tree is full and insertion failed:
if (node == null)
{
packedRectangle = new Rectangle();
return false;
}
packedRectangle = new Rectangle(node.Rectangle.X, node.Rectangle.Y, node.Rectangle.Width - 2, node.Rectangle.Height - 2);
return true;
}
#endregion
#region public Rectangle TryAdd(RectangleF boundingBox)
/// <summary>
/// Adds boundingBox to the GlyphPacker.
/// </summary>
/// <param name="boundingBox">The bounding box of the item to pack.</param>
/// <param name="packedRectangle">The System.Drawing.RectangleF that contains the position of the packed item.</param>
/// <returns>True, if the item was successfully packed; false if the item is too big for this packer..</returns>
/// <exception cref="InvalidOperationException">Occurs if the item is larger than the available TexturePacker area</exception>
/// <exception cref="TexturePackerFullException">Occurs if the item cannot fit in the remaining packer space.</exception>
public bool TryAdd(RectangleF boundingBox, out RectangleF packedRectangle)
{
Rectangle bbox = new Rectangle(
(int)boundingBox.X, (int)boundingBox.Y,
(int)(boundingBox.Width + 0.5f), (int)(boundingBox.Height + 0.5f));
return TryAdd(bbox, out packedRectangle);
}
#endregion
#region public Rectangle Add(Rectangle boundingBox)
/// <summary>
/// Adds boundingBox to the GlyphPacker.
/// </summary>
/// <param name="boundingBox">The bounding box of the item to pack.</param>
/// <returns>A System.Drawing.Rectangle containing the coordinates of the packed item.</returns>
/// <exception cref="InvalidOperationException">Occurs if the item is larger than the available TexturePacker area</exception>
/// <exception cref="TexturePackerFullException">Occurs if the item cannot fit in the remaining packer space.</exception>
public Rectangle Add(Rectangle boundingBox)
{
if (!TryAdd(boundingBox, out boundingBox))
throw new TexturePackerFullException();
return boundingBox;
}
#endregion
#region public Rectangle Add(RectangleF boundingBox)
/// <summary>
/// Rounds boundingBox to the largest integer and adds the resulting Rectangle to the GlyphPacker.
/// </summary>
/// <param name="boundingBox">The bounding box of the item to pack.</param>
/// <returns>A System.Drawing.Rectangle containing the coordinates of the packed item.</returns>
/// <exception cref="InvalidOperationException">Occurs if the item is larger than the available TexturePacker area</exception>
/// <exception cref="ArgumentException">Occurs if the item already exists in the TexturePacker.</exception>
public Rectangle Add(RectangleF boundingBox)
{
Rectangle bbox = new Rectangle(
(int)boundingBox.X, (int)boundingBox.Y,
(int)(boundingBox.Width + 0.5f), (int)(boundingBox.Height + 0.5f));
return Add(bbox);
}
#endregion
#region public void Clear()
/// <summary>
/// Discards all packed items.
/// </summary>
public void Clear()
{
root.Clear();
}
#endregion
#endregion
#region Node
class Node
{
public Node()
{
}
Node left, right;
Rectangle rect;
bool occupied;
public Rectangle Rectangle { get { return rect; } set { rect = value; } }
public Node Left { get { return left; } set { left = value; } }
public Node Right { get { return right; } set { right = value; } }
#region --- Constructor ---
public bool Leaf
{
get { return left == null && right == null; }
}
#endregion
#region Node Insert(Rectangle bbox)
public Node Insert( Rectangle bbox)
{
if (!this.Leaf)
{
// Recurse towards left child, and if that fails, towards the right.
Node new_node = left.Insert(bbox);
return new_node ?? right.Insert(bbox);
}
else
{
// We have recursed to a leaf.
// If it is not empty go back.
if (occupied)
return null;
// If this leaf is too small go back.
if (rect.Width < bbox.Width || rect.Height < bbox.Height)
return null;
// If this leaf is the right size, insert here.
if (rect.Width == bbox.Width && rect.Height == bbox.Height)
{
occupied = true;
return this;
}
// This leaf is too large, split it up. We'll decide which way to split
// by checking the width and height difference between this rectangle and
// out item's bounding box. If the width difference is larger, we'll split
// horizontaly, else verticaly.
left = new Node();
right = new Node();
int dw = this.rect.Width - bbox.Width + 1;
int dh = this.rect.Height - bbox.Height + 1;
if (dw > dh)
{
left.rect = new Rectangle(rect.Left, rect.Top, bbox.Width, rect.Height);
right.rect = new Rectangle(rect.Left + bbox.Width, rect.Top, rect.Width - bbox.Width, rect.Height);
}
else
{
left.rect = new Rectangle(rect.Left, rect.Top, rect.Width, bbox.Height);
right.rect = new Rectangle(rect.Left, rect.Top + bbox.Height, rect.Width, rect.Height - bbox.Height);
}
return left.Insert(bbox);
}
}
#endregion
#region public void Clear()
public void Clear()
{
if (left != null)
left.Clear();
if (right != null)
right.Clear();
left = right = null;
}
#endregion
}
#endregion
}
class TexturePackerFullException : Exception
{
public TexturePackerFullException() : base("There is not enough space to add this item. Consider calling the Clear() method.") { }
}
}

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#region License
//
// The Open Toolkit Library License
//
// Copyright (c) 2006 - 2008 the Open Toolkit library, except where noted.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do
// so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
//
#endregion
using System;
using System.Collections.Generic;
using System.Text;
using System.Drawing;
namespace OpenTK.Graphics.Text
{
class GlyphSheet<T> : IDisposable where T : Texture2D
{
#region Fields
readonly T texture;
readonly GlyphPacker packer;
bool disposed;
#endregion
#region Constructors
public GlyphSheet(int width, int height)
{
texture = (T)typeof(T).GetConstructor(new Type[] { typeof(int), typeof(int) }).Invoke(new object[] { width, height });
//texture.MagnificationFilter = TextureMagFilter.Nearest;
//texture.MinificationFilter = TextureMinFilter.Nearest;
packer = new GlyphPacker(width, height);
}
#endregion
#region Public Members
public T Texture
{
get { return texture; }
}
public GlyphPacker Packer
{
get { return packer; }
}
#endregion
#region IDisposable Members
public void Dispose()
{
if (!disposed)
{
texture.Dispose();
disposed = true;
}
}
#endregion
}
}

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#region License
//
// The Open Toolkit Library License
//
// Copyright (c) 2006 - 2008 the Open Toolkit library, except where noted.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do
// so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
//
#endregion
using System;
namespace OpenTK.Graphics.Text
{
interface IGlyphCache : IDisposable
{
void Add(Glyph glyph, IGlyphRasterizer rasterizer, TextQuality quality);
bool Contains(Glyph glyph);
CachedGlyphInfo this[Glyph glyph] { get; }
void Clear();
}
}

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#region License
//
// The Open Toolkit Library License
//
// Copyright (c) 2006 - 2008 the Open Toolkit library, except where noted.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do
// so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
//
#endregion
using System;
using System.Collections.Generic;
using System.Text;
using System.Drawing;
using OpenTK.Graphics.Text;
namespace OpenTK.Graphics.Text
{
interface IGlyphRasterizer
{
Bitmap Rasterize(Glyph glyph);
Bitmap Rasterize(Glyph glyph, TextQuality quality);
TextExtents MeasureText(ref TextBlock block);
TextExtents MeasureText(ref TextBlock block, TextQuality quality);
void Clear();
}
}

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#region License
//
// The Open Toolkit Library License
//
// Copyright (c) 2006 - 2008 the Open Toolkit library, except where noted.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do
// so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
//
#endregion
using System;
using System.Collections.Generic;
using System.Text;
using System.Drawing;
namespace OpenTK.Graphics.Text
{
interface ITextOutputProvider : IDisposable
{
void Print(ref TextBlock block, Color color, IGlyphRasterizer rasterizer);
void Clear();
void Begin();
void End();
}
}

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using System;
using System.Collections.Generic;
using System.Text;
namespace OpenTK.Graphics.Text
{
class PoolableTextExtents : TextExtents, IPoolable<PoolableTextExtents>
{
ObjectPool<PoolableTextExtents> owner;
#region Constructors
public PoolableTextExtents()
{
}
#endregion
#region IPoolable<PoolableTextExtents> Members
ObjectPool<PoolableTextExtents> IPoolable<PoolableTextExtents>.Owner
{
get { return owner; }
set { owner = value; }
}
#endregion
#region IPoolable Members
void IPoolable.OnAcquire()
{
Clear();
}
void IPoolable.OnRelease()
{
}
#endregion
}
}

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#region License
//
// The Open Toolkit Library License
//
// Copyright (c) 2006 - 2008 the Open Toolkit library, except where noted.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do
// so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
//
#endregion
using System;
using System.Collections.Generic;
using System.Text;
using System.Drawing;
namespace OpenTK.Graphics.Text
{
// Uniquely identifies a block of text. This structure can be used to identify text blocks for caching.
struct TextBlock : IEquatable<TextBlock>, IEnumerable<Glyph>
{
#region Fields
public readonly string Text;
public readonly Font Font;
public readonly RectangleF Bounds;
public readonly TextPrinterOptions Options;
public readonly TextAlignment Alignment;
public readonly TextDirection Direction;
public readonly int UsageCount;
#endregion
#region Constructors
public TextBlock(string text, Font font, RectangleF bounds, TextPrinterOptions options, TextAlignment alignment, TextDirection direction)
{
Text = text;
Font = font;
Bounds = bounds;
Options = options;
Alignment = alignment;
Direction = direction;
UsageCount = 0;
}
#endregion
#region Public Members
public override bool Equals(object obj)
{
if (!(obj is TextBlock))
return false;
return Equals((TextBlock)obj);
}
public override int GetHashCode()
{
return Text.GetHashCode() ^ Font.GetHashCode() ^ Bounds.GetHashCode() ^ Options.GetHashCode();
}
public Glyph this[int i]
{
get { return new Glyph(Text[i], Font); }
}
#endregion
#region IEquatable<TextBlock> Members
public bool Equals(TextBlock other)
{
return
Text == other.Text &&
Font == other.Font &&
Bounds == other.Bounds &&
Options == other.Options;
}
#endregion
#region IEnumerable<Glyph> Members
public IEnumerator<Glyph> GetEnumerator()
{
return new GlyphEnumerator(Text, Font);
}
#endregion
#region IEnumerable Members
System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator()
{
return new GlyphEnumerator(Text, Font);
}
#endregion
}
}

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#region License
//
// The Open Toolkit Library License
//
// Copyright (c) 2006 - 2008 the Open Toolkit library, except where noted.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do
// so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
//
#endregion
using System;
using System.Collections.Generic;
using System.Text;
namespace OpenTK.Graphics.Text
{
class TextBlockComparer : IComparer<TextBlock>
{
#region Constructors
public TextBlockComparer() { }
#endregion
#region IComparer<TextBlock> Members
public int Compare(TextBlock x, TextBlock y)
{
return x.UsageCount.CompareTo(y.UsageCount);
}
#endregion
}
}

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using System;
using System.Collections.Generic;
using System.Text;
namespace OpenTK.Graphics
{
/// <summary>
/// Defines available alignments for text.
/// </summary>
public enum TextAlignment
{
/// <summary>The text is aligned to the near side (left for left-to-right text and right for right-to-left text).</summary>
Near = 0,
/// <summary>The text is aligned to the center.</summary>
Center,
/// <summary>The text is aligned to the far side (right for left-to-right text and left for right-to-left text).</summary>
Far
}
}

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using System;
using System.Collections.Generic;
using System.Text;
namespace OpenTK.Graphics
{
/// <summary>
/// Defines available directions for text layout.
/// </summary>
public enum TextDirection
{
/// <summary>The text is layed out from left to right.</summary>
LeftToRight,
/// <summary>The text is layed out from right to left.</summary>
RightToLeft,
/// <summary>The text is layed out vertically.</summary>
Vertical
}
}

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#region License
//
// The Open Toolkit Library License
//
// Copyright (c) 2006 - 2008 the Open Toolkit library, except where noted.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do
// so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
//
#endregion
using System;
using System.Collections.Generic;
using System.Text;
using System.Drawing;
namespace OpenTK.Graphics
{
/// <summary>
/// Holds the results of a text measurement.
/// </summary>
public class TextExtents : IDisposable
{
#region Fields
protected RectangleF text_extents;
protected List<RectangleF> glyph_extents = new List<RectangleF>();
public static readonly TextExtents Empty = new TextExtents();
#endregion
#region Constructors
internal TextExtents()
{
}
#endregion
#region Public Members
/// <summary>
/// Gets the bounding box of the measured text.
/// </summary>
public RectangleF BoundingBox
{
get { return text_extents; }
internal set { text_extents = value; }
}
/// <summary>
/// Gets the extents of each glyph in the measured text.
/// </summary>
/// <param name="i">The index of the glyph.</param>
/// <returns>The extents of the specified glyph.</returns>
public RectangleF this[int i]
{
get { return glyph_extents[i]; }
internal set { glyph_extents[i] = value; }
}
/// <summary>
/// Gets the extents of each glyph in the measured text.
/// </summary>
public IEnumerable<RectangleF> GlyphExtents
{
get { return (IEnumerable<RectangleF>)glyph_extents; }
}
/// <summary>
/// Gets the number of the measured glyphs.
/// </summary>
public int Count
{
get { return glyph_extents.Count; }
}
#endregion
#region Internal Members
internal void Add(RectangleF glyphExtent)
{
glyph_extents.Add(glyphExtent);
}
internal void AddRange(IEnumerable<RectangleF> glyphExtents)
{
glyph_extents.AddRange(glyphExtents);
}
internal void Clear()
{
BoundingBox = RectangleF.Empty;
glyph_extents.Clear();
}
internal TextExtents Clone()
{
TextExtents extents = new TextExtents();
extents.glyph_extents.AddRange(GlyphExtents);
extents.BoundingBox = BoundingBox;
return extents;
}
#endregion
#region IDisposable Members
/// <summary>
/// Frees the resources consumed by this TextExtents instance.
/// </summary>
public virtual void Dispose()
{
}
#endregion
}
}

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#region --- License ---
/* Licensed under the MIT/X11 license.
* Copyright (c) 2006-2008 the OpenTK Team.
* This notice may not be removed from any source distribution.
* See license.txt for licensing details.
*/
#endregion
using System;
using System.Collections.Generic;
using System.Text;
using System.Drawing;
using System.Text.RegularExpressions;
using System.Runtime.InteropServices;
using System.Diagnostics;
using OpenTK.Graphics;
using OpenTK.Graphics.Text;
using OpenTK.Platform;
namespace OpenTK.Fonts { }
namespace OpenTK.Graphics
{
/// <summary>
/// Provides methods to perform layout and print hardware accelerated text.
/// </summary>
public sealed class TextPrinter : ITextPrinter
{
#region Fields
IGlyphRasterizer glyph_rasterizer;
ITextOutputProvider text_output;
TextQuality text_quality;
bool disposed;
#endregion
#region Constructors
/// <summary>
/// Constructs a new TextPrinter instance.
/// </summary>
public TextPrinter()
: this(null, null, TextQuality.Default) { }
/// <summary>
/// Constructs a new TextPrinter instance with the specified TextQuality level.
/// </summary>
/// <param name="quality">The desired TextQuality of this TextPrinter.</param>
public TextPrinter(TextQuality quality)
: this(null, null, quality) { }
TextPrinter(IGlyphRasterizer rasterizer, ITextOutputProvider output, TextQuality quality)
{
glyph_rasterizer = rasterizer;
text_output = output;
text_quality = quality;
}
#endregion
#region ITextPrinter Members
#region Print
/// <summary>
/// Prints text using the specified color and layout options.
/// </summary>
/// <param name="text">The System.String to print.</param>
/// <param name="font">The System.Drawing.Font that will be used to print text.</param>
/// <param name="color">The System.Drawing.Color that will be used to print text.</param>
public void Print(string text, Font font, Color color)
{
Print(text, font, color, RectangleF.Empty, TextPrinterOptions.Default, TextAlignment.Near, TextDirection.LeftToRight);
}
/// <summary>
/// Prints text using the specified color and layout options.
/// </summary>
/// <param name="text">The System.String to print.</param>
/// <param name="font">The System.Drawing.Font that will be used to print text.</param>
/// <param name="color">The System.Drawing.Color that will be used to print text.</param>
/// <param name="rect">The System.Drawing.Rectangle that defines the bounds for text layout.</param>
public void Print(string text, Font font, Color color, RectangleF rect)
{
Print(text, font, color, rect, TextPrinterOptions.Default, TextAlignment.Near, TextDirection.LeftToRight);
}
/// <summary>
/// Prints text using the specified color and layout options.
/// </summary>
/// <param name="text">The System.String to print.</param>
/// <param name="font">The System.Drawing.Font that will be used to print text.</param>
/// <param name="color">The System.Drawing.Color that will be used to print text.</param>
/// <param name="rect">The System.Drawing.Rectangle that defines the bounds for text layout.</param>
/// <param name="options">The OpenTK.Graphics.TextPrinterOptions that will be used to print text.</param>
public void Print(string text, Font font, Color color, RectangleF rect, TextPrinterOptions options)
{
Print(text, font, color, rect, options, TextAlignment.Near, TextDirection.LeftToRight);
}
/// <summary>
/// Prints text using the specified color and layout options.
/// </summary>
/// <param name="text">The System.String to print.</param>
/// <param name="font">The System.Drawing.Font that will be used to print text.</param>
/// <param name="color">The System.Drawing.Color that will be used to print text.</param>
/// <param name="rect">The System.Drawing.Rectangle that defines the bounds for text layout.</param>
/// <param name="options">The OpenTK.Graphics.TextPrinterOptions that will be used to print text.</param>
/// <param name="alignment">The OpenTK.Graphics.TextAlignment that will be used to print text.</param>
public void Print(string text, Font font, Color color, RectangleF rect, TextPrinterOptions options, TextAlignment alignment)
{
Print(text, font, color, rect, options, alignment, TextDirection.LeftToRight);
}
/// <summary>
/// Prints text using the specified color and layout options.
/// </summary>
/// <param name="text">The System.String to print.</param>
/// <param name="font">The System.Drawing.Font that will be used to print text.</param>
/// <param name="color">The System.Drawing.Color that will be used to print text.</param>
/// <param name="rect">The System.Drawing.Rectangle that defines the bounds for text layout.</param>
/// <param name="options">The OpenTK.Graphics.TextPrinterOptions that will be used to print text.</param>
/// <param name="alignment">The OpenTK.Graphics.TextAlignment that will be used to print text.</param>
/// <param name="direction">The OpenTK.Graphics.TextDirection that will be used to print text.</param>
public void Print(string text, Font font, Color color, RectangleF rect, TextPrinterOptions options, TextAlignment alignment, TextDirection direction)
{
if (disposed)
throw new ObjectDisposedException(this.GetType().ToString());
if (!ValidateParameters(text, font, rect))
return;
TextBlock block = new TextBlock(text, font, rect, options, alignment, direction);
TextOutput.Print(ref block, color, Rasterizer);
}
#endregion
#region Measure
/// <summary>
/// Measures text using the specified layout options.
/// </summary>
/// <param name="text">The System.String to measure.</param>
/// <param name="font">The System.Drawing.Font that will be used to measure text.</param>
/// <returns>An OpenTK.Graphics.TextExtents instance that contains the results of the measurement.</returns>
public TextExtents Measure(string text, Font font)
{
return Measure(text, font, RectangleF.Empty, TextPrinterOptions.Default, TextAlignment.Near, TextDirection.LeftToRight);
}
/// <summary>
/// Measures text using the specified layout options.
/// </summary>
/// <param name="text">The System.String to measure.</param>
/// <param name="font">The System.Drawing.Font that will be used to measure text.</param>
/// <param name="rect">The System.Drawing.Rectangle that defines the bounds for text layout.</param>
/// <returns>An OpenTK.Graphics.TextExtents instance that contains the results of the measurement.</returns>
public TextExtents Measure(string text, Font font, RectangleF rect)
{
return Measure(text, font, rect, TextPrinterOptions.Default, TextAlignment.Near, TextDirection.LeftToRight);
}
/// <summary>
/// Measures text using the specified layout options.
/// </summary>
/// <param name="text">The System.String to measure.</param>
/// <param name="font">The System.Drawing.Font that will be used to measure text.</param>
/// <param name="rect">The System.Drawing.Rectangle that defines the bounds for text layout.</param>
/// <param name="options">The OpenTK.Graphics.TextPrinterOptions that will be used to measure text.</param>
/// <returns>An OpenTK.Graphics.TextExtents instance that contains the results of the measurement.</returns>
public TextExtents Measure(string text, Font font, RectangleF rect, TextPrinterOptions options)
{
return Measure(text, font, rect, options, TextAlignment.Near, TextDirection.LeftToRight);
}
/// <summary>
/// Measures text using the specified layout options.
/// </summary>
/// <param name="text">The System.String to measure.</param>
/// <param name="font">The System.Drawing.Font that will be used to measure text.</param>
/// <param name="rect">The System.Drawing.Rectangle that defines the bounds for text layout.</param>
/// <param name="options">The OpenTK.Graphics.TextPrinterOptions that will be used to measure text.</param>
/// <param name="alignment">The OpenTK.Graphics.TextAlignment that will be used to measure text.</param>
/// <returns>An OpenTK.Graphics.TextExtents instance that contains the results of the measurement.</returns>
public TextExtents Measure(string text, Font font, RectangleF rect, TextPrinterOptions options, TextAlignment alignment)
{
return Measure(text, font, rect, options, alignment, TextDirection.LeftToRight);
}
/// <summary>
/// Measures text using the specified layout options.
/// </summary>
/// <param name="text">The System.String to measure.</param>
/// <param name="font">The System.Drawing.Font that will be used to measure text.</param>
/// <param name="rect">The System.Drawing.Rectangle that defines the bounds for text layout.</param>
/// <param name="options">The OpenTK.Graphics.TextPrinterOptions that will be used to measure text.</param>
/// <param name="alignment">The OpenTK.Graphics.TextAlignment that will be used to measure text.</param>
/// <param name="direction">The OpenTK.Graphics.TextDirection that will be used to measure text.</param>
/// <returns>An OpenTK.Graphics.TextExtents instance that contains the results of the measurement.</returns>
public TextExtents Measure(string text, Font font, RectangleF rect, TextPrinterOptions options, TextAlignment alignment, TextDirection direction)
{
if (disposed)
throw new ObjectDisposedException(this.GetType().ToString());
if (!ValidateParameters(text, font, rect))
return TextExtents.Empty;
TextBlock block = new TextBlock(text, font, rect, options, alignment, direction);
return Rasterizer.MeasureText(ref block);
}
#endregion
#region Clear
public void Clear()
{
if (disposed)
throw new ObjectDisposedException(this.GetType().ToString());
TextOutput.Clear();
Rasterizer.Clear();
}
#endregion
#region Begin
/// <summary>
/// Sets up a resolution-dependent orthographic projection.
/// </summary>
public void Begin()
{
TextOutput.Begin();
}
#endregion
#region Begin
/// <summary>
/// Restores the projection and modelview matrices to their previous state.
/// </summary>
public void End()
{
TextOutput.End();
}
#endregion
#region Obsolete
[Obsolete("Use TextPrinter.Print instead")]
public void Draw(TextHandle handle)
{
Print(handle.Text, handle.GdiPFont, Color.White);
}
[Obsolete("Use TextPrinter.Print instead")]
public void Draw(string text, TextureFont font)
{
Print(text, font.font, Color.White);
}
[Obsolete("Use TextPrinter.Print instead")]
public void Prepare(string text, TextureFont font, out TextHandle handle)
{
handle = new TextHandle(text, font.font);
}
#endregion
#endregion
#region Private Members
IGlyphRasterizer Rasterizer
{
get
{
if (glyph_rasterizer == null)
glyph_rasterizer = new GdiPlusGlyphRasterizer();
return glyph_rasterizer;
}
}
ITextOutputProvider TextOutput
{
get
{
if (text_output == null)
text_output = GL1TextOutputProvider.Create(text_quality);
return text_output;
}
}
#endregion
#region Static Members
static bool ValidateParameters(string text, Font font, RectangleF rect)
{
if (String.IsNullOrEmpty(text))
return false;
if (font == null)
throw new ArgumentNullException("font");
if (rect.Width < 0 || rect.Height < 0)
throw new ArgumentOutOfRangeException("rect");
return true;
}
#endregion
#region IDisposable Members
/// <summary>
/// Frees the resources consumed by this TextPrinter object.
/// </summary>
public void Dispose()
{
if (!disposed)
{
TextOutput.Dispose();
disposed = true;
}
}
#endregion
}
}

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using System;
using System.Collections.Generic;
using System.Text;
namespace OpenTK.Graphics
{
/// <summary>
/// Defines available options for the TextPrinter.
/// </summary>
[Flags]
public enum TextPrinterOptions
{
/// <summary>The TextPrinter will use default printing options.</summary>
Default = 0x0000,
/// <summary>The TextPrinter will not cache text blocks as they are measured or printed.</summary>
NoCache = 0x0001,
}
}

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using System;
using System.Collections.Generic;
using System.Text;
namespace OpenTK.Graphics
{
/// <summary>
/// Defines available quality levels for text printing.
/// </summary>
public enum TextQuality
{
/// <summary>Use the default quality, as specified by the operating system.</summary>
Default = 0,
/// <summary>Use fast, low quality text (typically non-antialiased) .</summary>
Low,
/// <summary>Use medium quality text (typically grayscale antialiased).</summary>
Medium,
/// <summary>Use slow, high quality text (typically subpixel antialiased).</summary>
High
}
}

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#region License
//
// The Open Toolkit Library License
//
// Copyright (c) 2006 - 2008 the Open Toolkit library, except where noted.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do
// so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
//
#endregion
using System;
using System.Collections.Generic;
using System.Text;
using System.Drawing;
using System.Drawing.Imaging;
using System.Diagnostics;
namespace OpenTK.Graphics
{
abstract class Texture2D : IGraphicsResource, IEquatable<Texture2D>
{
#region Fields
IGraphicsContext context;
int id;
int width, height;
bool disposed;
TextureMagFilter mag_filter = TextureMagFilter.Linear;
TextureMinFilter min_filter = TextureMinFilter.Linear;
#endregion
#region Constructors
public Texture2D(int width, int height)
{
if (width <= 0)
throw new ArgumentOutOfRangeException("width");
if (height <= 0)
throw new ArgumentOutOfRangeException("height");
Width = width;
Height = height;
}
#endregion
#region Public Members
#region public int Width
/// <summary>Gets the width of the texture.</summary>
public int Width { get { return width; } private set { width = value; } }
#endregion
#region public int Height
/// <summary>Gets the height of the texture.</summary>
public int Height { get { return height; } private set { height = value; } }
#endregion
#region MagnificationFilter
public TextureMagFilter MagnificationFilter
{
get { return mag_filter; }
set { mag_filter = value; }
}
#endregion
#region MinificationFilter
public TextureMinFilter MinificationFilter
{
get { return min_filter; }
set { min_filter = value; }
}
#endregion
#region Bind
public void Bind()
{
GL.BindTexture(TextureTarget.Texture2D, (this as IGraphicsResource).Id);
}
#endregion
#region WriteRegion
public void WriteRegion(Rectangle source, Rectangle target, int mipLevel, Bitmap bitmap)
{
if (bitmap == null)
throw new ArgumentNullException("data");
GraphicsUnit unit = GraphicsUnit.Pixel;
if (!bitmap.GetBounds(ref unit).Contains(source))
throw new InvalidOperationException("The source Rectangle is larger than the Bitmap.");
if (mipLevel < 0)
throw new ArgumentOutOfRangeException("mipLevel");
Bind();
BitmapData data = null;
GL.PushClientAttrib(ClientAttribMask.ClientPixelStoreBit);
try
{
data = bitmap.LockBits(source, ImageLockMode.ReadOnly, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
GL.PixelStore(PixelStoreParameter.UnpackAlignment, 1);
GL.PixelStore(PixelStoreParameter.UnpackRowLength, bitmap.Width);
GL.TexSubImage2D(TextureTarget.Texture2D, mipLevel,
target.Left, target.Top,
target.Width, target.Height,
OpenTK.Graphics.PixelFormat.Bgra,
PixelType.UnsignedByte, data.Scan0);
}
finally
{
GL.PopClientAttrib();
if (data != null)
bitmap.UnlockBits(data);
}
}
#endregion
#region ReadRegion
public TextureRegion2D ReadRegion(Rectangle rect, int mipLevel)
{
if (mipLevel < 0)
throw new ArgumentOutOfRangeException("miplevel");
TextureRegion2D<int> region = new TextureRegion2D<int>(rect);
GL.GetTexImage(TextureTarget.Texture2D, mipLevel, OpenTK.Graphics.PixelFormat.Bgra, PixelType.UnsignedByte, region.Data);
return region;
}
#endregion
#region Equals
public override bool Equals(object obj)
{
if (obj is Texture2D)
return this.Equals((Texture2D)obj);
return false;
}
#endregion
#region public override int GetHashCode()
public override int GetHashCode()
{
return (this as IGraphicsResource).Id;
}
#endregion
#region public overrid string ToString()
public override string ToString()
{
return String.Format("Texture2D #{0} ({1}x{2}, {3})",
(this as IGraphicsResource).Id.ToString(),
Width.ToString(),
Height.ToString(),
InternalFormat.ToString());
}
#endregion
#endregion
#region Protected Members
#region InternalFormat
protected abstract PixelInternalFormat InternalFormat { get; }
#endregion
#endregion
#region Private Members
int CreateTexture(int width, int height)
{
int id = GL.GenTexture();
if (id == 0)
throw new GraphicsResourceException(String.Format("Texture creation failed, (Error: {0})", GL.GetError()));
SetDefaultTextureParameters(id);
GL.TexImage2D(TextureTarget.Texture2D, 0, InternalFormat, Width, Height, 0,
OpenTK.Graphics.PixelFormat.Rgba, PixelType.UnsignedByte, IntPtr.Zero);
return id;
}
void SetDefaultTextureParameters(int id)
{
// Ensure the texture is allocated.
GL.BindTexture(TextureTarget.Texture2D, id);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)All.Linear);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)All.Linear);
if (GL.SupportsExtension("Version12"))
{
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapS, (int)All.ClampToEdge);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapT, (int)All.ClampToEdge);
}
else
{
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapS, (int)All.Clamp);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapT, (int)All.Clamp);
}
}
#endregion
#region IGraphicsResource Members
#region IGraphicsResource.Context
IGraphicsContext IGraphicsResource.Context { get { return context; } }
#endregion
#region IGraphicsResource.Id
int IGraphicsResource.Id
{
get
{
if (id == 0)
{
GraphicsContext.Assert();
context = GraphicsContext.CurrentContext;
id = CreateTexture(Width, Height);
}
return id;
}
}
#endregion
#endregion
#region IEquatable<Texture2D> Members
public bool Equals(Texture2D other)
{
return (this as IGraphicsResource).Id == (other as IGraphicsResource).Id;
}
#endregion
#region IDisposable Members
public void Dispose()
{
Dispose(true);
GC.SuppressFinalize(this);
}
void Dispose(bool manual)
{
if (!disposed)
{
if (manual)
{
GL.DeleteTexture(id);
}
else
{
Debug.Print("[Warning] {0} leaked.", this);
}
disposed = true;
}
}
~Texture2D()
{
Dispose(false);
}
#endregion
}
}

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#region License
//
// The Open Toolkit Library License
//
// Copyright (c) 2006 - 2008 the Open Toolkit library, except where noted.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do
// so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
//
#endregion
using System;
using System.Collections.Generic;
using System.Text;
using System.Drawing;
namespace OpenTK.Graphics
{
abstract class TextureRegion2D
{
Rectangle rectangle;
public Rectangle Rectangle { get { return rectangle; } protected set { rectangle = value; } }
}
/// <summary>
/// Holds part or the whole of a 2d OpenGL texture.
/// </summary>
class TextureRegion2D<T> : TextureRegion2D where T : struct
{
#region Fields
T[,] data;
#endregion
#region Constructors
internal TextureRegion2D(Rectangle rect)
{
data = new T[rect.Width, rect.Height];
Rectangle = rect;
}
#endregion
#region Public Members
public T this[int x, int y]
{
get { return data[x, y]; }
set { data[x, y] = value; }
}
#endregion
#region Internal Members
internal T[,] Data { get { return data; } }
#endregion
}
}