124 lines
3.2 KiB
C#
124 lines
3.2 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Drawing;
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using OpenRA.FileFormats;
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using OpenRA.Widgets.Delegates;
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using System.Linq;
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namespace OpenRA.Widgets
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{
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public class Widget
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{
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// Info defined in YAML
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public readonly string Id = null;
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public readonly string X = "0";
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public readonly string Y = "0";
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public readonly string Width = "0";
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public readonly string Height = "0";
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public readonly string Delegate = null;
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public Lazy<IWidgetDelegate> InputHandler;
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public bool Visible = true;
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public readonly List<Widget> Children = new List<Widget>();
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// Calculated internally
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public Rectangle Bounds;
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public Widget Parent = null;
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public Widget() { InputHandler = Lazy.New(() => BindHandler(Delegate)); }
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public virtual void Initialize()
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{
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// Parse the YAML equations to find the widget bounds
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Rectangle parentBounds = (Parent == null) ? new Rectangle(0,0,Game.viewport.Width,Game.viewport.Height) : Parent.Bounds;
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Dictionary<string, int> substitutions = new Dictionary<string, int>();
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substitutions.Add("WINDOW_RIGHT", Game.viewport.Width);
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substitutions.Add("WINDOW_BOTTOM", Game.viewport.Height);
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substitutions.Add("PARENT_RIGHT", parentBounds.Width);
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substitutions.Add("PARENT_BOTTOM", parentBounds.Height);
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int width = Evaluator.Evaluate(Width, substitutions);
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int height = Evaluator.Evaluate(Height, substitutions);
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substitutions.Add("WIDTH", width);
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substitutions.Add("HEIGHT", height);
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Bounds = new Rectangle(parentBounds.X + Evaluator.Evaluate(X, substitutions),
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parentBounds.Y + Evaluator.Evaluate(Y, substitutions),
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width,
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height);
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foreach (var child in Children)
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child.Initialize();
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}
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public Rectangle GetEventBounds()
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{
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return Children
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.Where(c => c.Visible)
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.Select(c => c.GetEventBounds())
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.Aggregate(Bounds, Rectangle.Union);
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}
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static IWidgetDelegate BindHandler(string name)
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{
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if (name == null) return null;
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foreach (var mod in Game.ModAssemblies)
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{
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var act = (IWidgetDelegate)mod.First.CreateInstance(mod.Second + "." + name);
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if (act != null) return act;
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}
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throw new InvalidOperationException("Cannot locate widget delegate: {0}".F(name));
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}
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public virtual bool HandleInput(MouseInput mi)
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{
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// Are we able to handle this event?
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if (!Visible || !GetEventBounds().Contains(mi.Location.X,mi.Location.Y))
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return false;
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// Can any of our children handle this?
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foreach (var child in Children)
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if (child.HandleInput(mi))
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return true;
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// Mousedown
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// todo: route the other events too!
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if (InputHandler.Value != null && mi.Event == MouseInputEvent.Up)
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return InputHandler.Value.OnClick(this, mi);
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return false;
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}
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public virtual void Draw()
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{
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if (Visible)
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foreach (var child in Children)
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child.Draw();
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}
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public void AddChild(Widget child)
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{
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child.Parent = this;
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Children.Add( child );
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}
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public Widget GetWidget(string id)
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{
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if (this.Id == id)
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return this;
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foreach (var child in Children)
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if (child.GetWidget(id) != null)
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return child;
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return null;
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}
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}
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class ContainerWidget : Widget { }
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} |