aa121dcb2f
Use the covariant return type feature of C# 9 to allow method overrides to be more specific about their return type. By exposing this information, e.g. for Widget.Clone(), callers will have more information. This allows various casts to be removed as the information is now available within the type system.
91 lines
2.7 KiB
C#
91 lines
2.7 KiB
C#
#region Copyright & License Information
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/*
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* Copyright (c) The OpenRA Developers and Contributors
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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.Linq;
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using OpenRA.Graphics;
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using OpenRA.Mods.Common.Traits;
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using OpenRA.Primitives;
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using OpenRA.Widgets;
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namespace OpenRA.Mods.Common.Widgets
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{
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public class ResourcePreviewWidget : Widget
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{
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public Func<float> GetScale = () => 1f;
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readonly WorldRenderer worldRenderer;
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readonly WorldViewportSizes viewportSizes;
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readonly IResourceRenderer[] resourceRenderers;
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readonly Size tileSize;
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string resourceType;
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IResourceRenderer resourceRenderer;
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public string ResourceType
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{
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get => resourceType;
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set
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{
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resourceType = value;
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if (resourceType != null)
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resourceRenderer = resourceRenderers.FirstOrDefault(r => r.ResourceTypes.Contains(resourceType));
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else
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resourceRenderer = null;
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}
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}
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public Size IdealPreviewSize { get; }
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[ObjectCreator.UseCtor]
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public ResourcePreviewWidget(ModData modData, WorldRenderer worldRenderer, World world)
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{
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this.worldRenderer = worldRenderer;
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viewportSizes = modData.Manifest.Get<WorldViewportSizes>();
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resourceRenderers = world.WorldActor.TraitsImplementing<IResourceRenderer>().ToArray();
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tileSize = world.Map.Grid.TileSize;
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IdealPreviewSize = new Size(
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(int)(viewportSizes.DefaultScale * tileSize.Width),
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(int)(viewportSizes.DefaultScale * tileSize.Height));
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}
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protected ResourcePreviewWidget(ResourcePreviewWidget other)
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: base(other)
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{
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GetScale = other.GetScale;
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worldRenderer = other.worldRenderer;
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viewportSizes = other.viewportSizes;
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resourceRenderers = other.resourceRenderers;
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tileSize = other.tileSize;
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resourceType = other.resourceType;
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resourceRenderer = other.resourceRenderer;
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IdealPreviewSize = other.IdealPreviewSize;
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}
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public override ResourcePreviewWidget Clone() { return new ResourcePreviewWidget(this); }
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public override void Draw()
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{
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if (resourceRenderer == null)
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return;
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var scale = GetScale() * viewportSizes.DefaultScale;
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var origin = RenderOrigin + new int2(
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(int)(0.5f * (RenderBounds.Size.Width - scale * tileSize.Width)),
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(int)(0.5f * (RenderBounds.Size.Height - scale * tileSize.Height)));
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foreach (var r in resourceRenderer.RenderUIPreview(worldRenderer, resourceType, origin, scale))
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r.PrepareRender(worldRenderer).Render(worldRenderer);
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}
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}
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}
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