93 lines
2.7 KiB
C#
93 lines
2.7 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007-2020 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, either version 3 of
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* the License, or (at your option) any later version. For more
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* information, 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 OpenRA.FileFormats;
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using OpenRA.FileSystem;
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using OpenRA.Graphics;
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using OpenRA.Traits;
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namespace OpenRA.Mods.Common.Traits
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{
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[Desc("Load a PNG and use its embedded palette.")]
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class PaletteFromPngInfo : ITraitInfo, IProvidesCursorPaletteInfo
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{
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[PaletteDefinition]
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[FieldLoader.Require]
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[Desc("Internal palette name")]
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public readonly string Name = null;
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[Desc("If defined, load the palette only for this tileset.")]
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public readonly string Tileset = null;
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[FieldLoader.Require]
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[Desc("Filename to load")]
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public readonly string Filename = null;
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[Desc("Map listed indices to shadow. Ignores previous color.")]
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public readonly int[] ShadowIndex = { };
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public readonly bool AllowModifiers = true;
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[Desc("Whether this palette is available for cursors.")]
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public readonly bool CursorPalette = false;
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public object Create(ActorInitializer init) { return new PaletteFromPng(init.World, this); }
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string IProvidesCursorPaletteInfo.Palette { get { return CursorPalette ? Name : null; } }
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ImmutablePalette IProvidesCursorPaletteInfo.ReadPalette(IReadOnlyFileSystem fileSystem)
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{
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var png = new Png(fileSystem.Open(Filename));
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if (png.Palette == null)
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throw new InvalidOperationException("Unable to load palette `{0}` from non-paletted png `{1}`".F(Name, Filename));
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var colors = new uint[Palette.Size];
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for (var i = 0; i < png.Palette.Length; i++)
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colors[i] = (uint)png.Palette[i].ToArgb();
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return new ImmutablePalette(colors);
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}
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}
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class PaletteFromPng : ILoadsPalettes, IProvidesAssetBrowserPalettes
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{
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readonly World world;
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readonly PaletteFromPngInfo info;
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public PaletteFromPng(World world, PaletteFromPngInfo info)
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{
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this.world = world;
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this.info = info;
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}
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public void LoadPalettes(WorldRenderer wr)
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{
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if (info.Tileset != null && info.Tileset.ToLowerInvariant() != world.Map.Tileset.ToLowerInvariant())
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return;
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wr.AddPalette(info.Name, ((IProvidesCursorPaletteInfo)info).ReadPalette(world.Map), info.AllowModifiers);
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}
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public IEnumerable<string> PaletteNames
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{
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get
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{
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// Only expose the palette if it is available for the shellmap's tileset (which is a requirement for its use).
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if (info.Tileset == null || info.Tileset == world.Map.Rules.TileSet.Id)
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yield return info.Name;
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}
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}
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}
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}
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