364 lines
9.8 KiB
C#
364 lines
9.8 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007-2010 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 LICENSE.
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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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using System.Linq;
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using OpenRA.FileFormats;
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using OpenRA.Graphics;
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namespace OpenRA.Widgets
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{
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public abstract class Widget
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{
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// Info defined in YAML
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public string Id = null;
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public string X = "0";
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public string Y = "0";
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public string Width = "0";
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public string Height = "0";
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public string Delegate = null;
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public string EventHandler = null;
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public bool ClickThrough = true;
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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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static List<string> Delegates = new List<string>();
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public static Stack<Widget> WindowList = new Stack<Widget>();
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// Common Funcs that most widgets will want
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public Action<object> SpecialOneArg = (arg) => {};
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public Func<MouseInput, bool> OnMouseDown = mi => false;
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public Func<MouseInput, bool> OnMouseUp = mi => false;
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public Func<MouseInput, bool> OnMouseMove = mi => false;
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public Func<KeyInput, bool> OnKeyPress = e => false;
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public Func<bool> IsVisible;
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public Widget() { IsVisible = () => Visible; }
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public static Widget RootWidget
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{
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get { return rootWidget; }
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set { rootWidget = value; }
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}
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private static Widget rootWidget = new ContainerWidget();
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public Widget(Widget widget)
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{
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Id = widget.Id;
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X = widget.X;
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Y = widget.Y;
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Width = widget.Width;
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Height = widget.Height;
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Delegate = widget.Delegate;
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ClickThrough = widget.ClickThrough;
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Visible = widget.Visible;
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Bounds = widget.Bounds;
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Parent = widget.Parent;
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OnMouseDown = widget.OnMouseDown;
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OnMouseUp = widget.OnMouseUp;
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OnMouseMove = widget.OnMouseMove;
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OnKeyPress = widget.OnKeyPress;
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IsVisible = widget.IsVisible;
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foreach(var child in widget.Children)
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AddChild(child.Clone());
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}
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public virtual Widget Clone()
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{
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throw new InvalidOperationException("Widget type `{0}` is not cloneable.".F(GetType().Name));
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}
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public virtual int2 RenderOrigin
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{
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get
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{
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var offset = (Parent == null) ? int2.Zero : Parent.ChildOrigin;
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return new int2(Bounds.X, Bounds.Y) + offset;
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}
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}
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public virtual int2 ChildOrigin { get { return RenderOrigin; } }
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public virtual Rectangle RenderBounds { get { return new Rectangle(RenderOrigin.X, RenderOrigin.Y, Bounds.Width, Bounds.Height); } }
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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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var parentBounds = (Parent == null)
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? new Rectangle(0, 0, Game.viewport.Width, Game.viewport.Height)
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: Parent.Bounds;
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var 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_LEFT", parentBounds.Left);
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substitutions.Add("PARENT_TOP", parentBounds.Top);
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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(Evaluator.Evaluate(X, substitutions),
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Evaluator.Evaluate(Y, substitutions),
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width,
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height);
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}
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public void PostInit( Dictionary<string, object> args )
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{
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if( Delegate != null )
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{
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args[ "widget" ] = this;
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Game.modData.ObjectCreator.CreateObject<IWidgetDelegate>( Delegate, args );
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args.Remove( "widget" );
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}
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}
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public void InitDelegates()
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{
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foreach(var d in Delegates)
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Game.CreateObject<IWidgetDelegate>(d);
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}
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public virtual Rectangle EventBounds { get { return RenderBounds; } }
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public virtual Rectangle GetEventBounds()
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{
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return Children
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.Where(c => c.IsVisible())
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.Select(c => c.GetEventBounds())
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.Aggregate(EventBounds, Rectangle.Union);
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}
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public static Widget SelectedWidget;
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public bool Focused { get { return SelectedWidget == this; } }
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public virtual bool TakeFocus(MouseInput mi)
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{
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if (Focused)
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return true;
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if (SelectedWidget != null && !SelectedWidget.LoseFocus(mi))
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return false;
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SelectedWidget = this;
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return true;
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}
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// Remove focus from this widget; return false if you don't want to give it up
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public virtual bool LoseFocus(MouseInput mi)
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{
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// Some widgets may need to override focus depending on mouse click
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return LoseFocus();
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}
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public virtual bool LoseFocus()
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{
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if (SelectedWidget == this)
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SelectedWidget = null;
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return true;
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}
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public virtual string GetCursor(int2 pos) { return "default"; }
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public string GetCursorOuter(int2 pos)
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{
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// Is the cursor on top of us?
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if (!(IsVisible() && GetEventBounds().Contains(pos.ToPoint())))
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return null;
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// Do any of our children specify a cursor?
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foreach (var child in Children.OfType<Widget>().Reverse())
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{
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var cc = child.GetCursorOuter(pos);
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if (cc != null)
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return cc;
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}
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return EventBounds.Contains(pos.ToPoint()) ? GetCursor(pos) : null;
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}
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public virtual bool HandleInputInner(MouseInput mi) { return !ClickThrough; }
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public static bool HandleInput(MouseInput mi)
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{
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bool handled = false;
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if (SelectedWidget != null && SelectedWidget.HandleMouseInputOuter(mi))
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handled = true;
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if (!handled && RootWidget.HandleMouseInputOuter(mi))
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handled = true;
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if (mi.Event == MouseInputEvent.Move)
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{
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Viewport.LastMousePos = mi.Location;
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Viewport.TicksSinceLastMove = 0;
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}
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return handled;
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}
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public bool HandleMouseInputOuter(MouseInput mi)
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{
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// Are we able to handle this event?
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if (!(Focused || (IsVisible() && GetEventBounds().Contains(mi.Location.X,mi.Location.Y))))
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return false;
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// Send the event to the deepest children first and bubble up if unhandled
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foreach (var child in Children.OfType<Widget>().Reverse())
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if (child.HandleMouseInputOuter(mi))
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return true;
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// Do any widgety behavior (button click etc)
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// Return false if it can't handle any user actions
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if (!HandleInputInner(mi))
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return false;
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// Apply any special logic added by delegates; they return true if they caught the input
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if (mi.Event == MouseInputEvent.Down && OnMouseDown(mi)) return true;
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if (mi.Event == MouseInputEvent.Up && OnMouseUp(mi)) return true;
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if (mi.Event == MouseInputEvent.Move && OnMouseMove(mi)) return true;
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return true;
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}
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public virtual bool HandleKeyPressInner(KeyInput e) { return false; }
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public virtual bool HandleKeyPressOuter(KeyInput e)
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{
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if (!IsVisible())
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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.HandleKeyPressOuter(e))
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return true;
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// Do any widgety behavior (enter text etc)
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var handled = HandleKeyPressInner(e);
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// Apply any special logic added by delegates; they return true if they caught the input
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if (OnKeyPress(e)) return true;
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return handled;
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}
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public static bool HandleKeyPress(KeyInput e)
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{
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if (SelectedWidget != null)
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return SelectedWidget.HandleKeyPressOuter(e);
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if (RootWidget.HandleKeyPressOuter(e))
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return true;
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return false;
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}
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public abstract void DrawInner();
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public virtual void Draw()
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{
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if (IsVisible())
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{
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DrawInner();
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foreach (var child in Children)
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child.Draw();
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}
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}
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public virtual void Tick(World world)
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{
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if (IsVisible())
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foreach (var child in Children)
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child.Tick(world);
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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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{
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var w = child.GetWidget(id);
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if (w != null)
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return w;
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}
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return null;
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}
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public T GetWidget<T>(string id) where T : Widget
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{
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var widget = GetWidget(id);
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return (widget != null)? (T) widget : null;
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}
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public static void CloseWindow()
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{
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RootWidget.Children.Remove( WindowList.Pop() );
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if( WindowList.Count > 0 )
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rootWidget.Children.Add( WindowList.Peek() );
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}
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public static Widget OpenWindow( string id )
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{
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return OpenWindow( id, new Dictionary<string, object>() );
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}
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public static Widget OpenWindow(string id, Dictionary<string, object> args )
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{
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var window = Game.modData.WidgetLoader.LoadWidget( args, rootWidget, id );
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if( WindowList.Count > 0 )
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rootWidget.Children.Remove( WindowList.Peek() );
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WindowList.Push( window );
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return window;
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}
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public static void DoTick(World world)
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{
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RootWidget.Tick(world);
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if (!world.GameHasStarted) return;
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if (world.LocalPlayer == null) return;
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++Viewport.TicksSinceLastMove;
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}
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public static void DoDraw()
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{
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RootWidget.Draw();
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}
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}
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class ContainerWidget : Widget {
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public ContainerWidget() : base() { }
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public ContainerWidget(Widget other) : base(other) { }
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public override void DrawInner() { }
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public override string GetCursor(int2 pos) { return null; }
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public override Widget Clone() { return new ContainerWidget(this); }
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}
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public interface IWidgetDelegate { }
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} |