147 lines
3.5 KiB
C#
147 lines
3.5 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007-2015 The OpenRA Developers (see AUTHORS)
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* This file is part of OpenRA, which is free software. It is made
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* available to you under the terms of the GNU General Public License
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* as published by the Free Software Foundation. For more information,
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* see COPYING.
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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 OpenRA.Graphics
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{
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[Serializable]
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public class SheetOverflowException : Exception
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{
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public SheetOverflowException(string message)
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: base(message) { }
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}
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public enum SheetType
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{
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Indexed = 1,
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DualIndexed = 2,
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BGRA = 4,
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}
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public sealed class SheetBuilder : IDisposable
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{
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public readonly SheetType Type;
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readonly List<Sheet> sheets = new List<Sheet>();
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readonly Func<Sheet> allocateSheet;
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Sheet current;
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TextureChannel channel;
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int rowHeight = 0;
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Point p;
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public static Sheet AllocateSheet(SheetType type, int sheetSize)
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{
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return new Sheet(type, new Size(sheetSize, sheetSize));
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}
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public SheetBuilder(SheetType t)
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: this(t, Game.Settings.Graphics.SheetSize) { }
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public SheetBuilder(SheetType t, int sheetSize)
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: this(t, () => AllocateSheet(t, sheetSize)) { }
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public SheetBuilder(SheetType t, Func<Sheet> allocateSheet)
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{
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channel = TextureChannel.Red;
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Type = t;
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current = allocateSheet();
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sheets.Add(current);
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this.allocateSheet = allocateSheet;
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}
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public Sprite Add(ISpriteFrame frame) { return Add(frame.Data, frame.Size, frame.Offset); }
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public Sprite Add(byte[] src, Size size) { return Add(src, size, float2.Zero); }
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public Sprite Add(byte[] src, Size size, float2 spriteOffset)
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{
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// Don't bother allocating empty sprites
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if (size.Width == 0 || size.Height == 0)
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return new Sprite(current, Rectangle.Empty, spriteOffset, channel, BlendMode.Alpha);
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var rect = Allocate(size, spriteOffset);
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Util.FastCopyIntoChannel(rect, src);
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current.CommitBufferedData();
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return rect;
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}
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public Sprite Add(Bitmap src)
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{
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var rect = Allocate(src.Size);
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Util.FastCopyIntoSprite(rect, src);
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current.CommitBufferedData();
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return rect;
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}
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public Sprite Add(Size size, byte paletteIndex)
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{
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var data = new byte[size.Width * size.Height];
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for (var i = 0; i < data.Length; i++)
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data[i] = paletteIndex;
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return Add(data, size);
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}
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TextureChannel? NextChannel(TextureChannel t)
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{
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var nextChannel = (int)t + (int)Type;
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if (nextChannel > (int)TextureChannel.Alpha)
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return null;
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return (TextureChannel)nextChannel;
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}
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public Sprite Allocate(Size imageSize) { return Allocate(imageSize, float2.Zero); }
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public Sprite Allocate(Size imageSize, float2 spriteOffset)
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{
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if (imageSize.Width + p.X > current.Size.Width)
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{
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p = new Point(0, p.Y + rowHeight);
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rowHeight = imageSize.Height;
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}
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if (imageSize.Height > rowHeight)
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rowHeight = imageSize.Height;
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if (p.Y + imageSize.Height > current.Size.Height)
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{
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var next = NextChannel(channel);
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if (next == null)
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{
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current.ReleaseBuffer();
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current = allocateSheet();
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sheets.Add(current);
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channel = TextureChannel.Red;
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}
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else
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channel = next.Value;
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rowHeight = imageSize.Height;
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p = new Point(0, 0);
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}
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var rect = new Sprite(current, new Rectangle(p, imageSize), spriteOffset, channel, BlendMode.Alpha);
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p.X += imageSize.Width;
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return rect;
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}
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public Sheet Current { get { return current; } }
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public void Dispose()
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{
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foreach (var sheet in sheets)
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sheet.Dispose();
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sheets.Clear();
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}
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}
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}
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