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