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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
{
[Obsolete]
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
}
[Obsolete]
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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