116 lines
3.4 KiB
C#
116 lines
3.4 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.Drawing;
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using System.Linq;
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using OpenRA.Graphics;
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using OpenRA.Mods.Common.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 ActorPreviewWidget : Widget
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{
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public bool Animate = false;
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public Func<float> GetScale = () => 1f;
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readonly WorldRenderer worldRenderer;
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IActorPreview[] preview = new IActorPreview[0];
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public int2 PreviewOffset { get; private set; }
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public int2 IdealPreviewSize { get; private set; }
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[ObjectCreator.UseCtor]
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public ActorPreviewWidget(WorldRenderer worldRenderer)
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{
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this.worldRenderer = worldRenderer;
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}
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protected ActorPreviewWidget(ActorPreviewWidget other)
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: base(other)
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{
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preview = other.preview;
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worldRenderer = other.worldRenderer;
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}
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public override Widget Clone() { return new ActorPreviewWidget(this); }
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public void SetPreview(ActorInfo actor, TypeDictionary td)
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{
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var init = new ActorPreviewInitializer(actor, worldRenderer, td);
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preview = actor.TraitInfos<IRenderActorPreviewInfo>()
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.SelectMany(rpi => rpi.RenderPreview(init))
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.ToArray();
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// Calculate the preview bounds
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PreviewOffset = int2.Zero;
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IdealPreviewSize = int2.Zero;
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var r = preview
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.SelectMany(p => p.Render(worldRenderer, WPos.Zero))
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.OrderBy(WorldRenderer.RenderableScreenZPositionComparisonKey)
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.Select(rr => rr.PrepareRender(worldRenderer));
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if (r.Any())
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{
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var b = r.First().ScreenBounds(worldRenderer);
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foreach (var rr in r.Skip(1))
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b = Rectangle.Union(b, rr.ScreenBounds(worldRenderer));
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IdealPreviewSize = new int2(b.Width, b.Height);
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PreviewOffset = -new int2(b.Left, b.Top) - IdealPreviewSize / 2;
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}
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}
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IFinalizedRenderable[] renderables;
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public override void PrepareRenderables()
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{
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renderables = preview
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.SelectMany(p => p.Render(worldRenderer, WPos.Zero))
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.OrderBy(WorldRenderer.RenderableScreenZPositionComparisonKey)
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.Select(r => r.PrepareRender(worldRenderer))
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.ToArray();
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}
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public override void Draw()
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{
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// HACK: The split between world and UI shaders is a giant PITA because it isn't
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// feasible to maintain two parallel sets of renderables for the two cases.
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// Instead, we temporarily hijack the world rendering context and set the position
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// and zoom values to give the desired screen position and size.
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var scale = GetScale();
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var origin = RenderOrigin + new int2(RenderBounds.Size.Width / 2, RenderBounds.Size.Height / 2);
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// The scale affects world -> screen transform, which we don't want when drawing the (fixed) UI.
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if (scale != 1f)
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origin = (1f / scale * origin.ToFloat2()).ToInt2();
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Game.Renderer.Flush();
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Game.Renderer.SetViewportParams(-origin - PreviewOffset, scale);
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foreach (var r in renderables)
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r.Render(worldRenderer);
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Game.Renderer.Flush();
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Game.Renderer.SetViewportParams(worldRenderer.Viewport.TopLeft, worldRenderer.Viewport.Zoom);
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}
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public override void Tick()
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{
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if (Animate)
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foreach (var p in preview)
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p.Tick();
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}
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}
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}
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