388 lines
12 KiB
C#
388 lines
12 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007-2011 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.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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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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static Widget rootWidget = new ContainerWidget();
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static Stack<Widget> WindowList = new Stack<Widget>();
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public static Widget SelectedWidget;
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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 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 static void CloseWindow()
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{
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if (WindowList.Count > 0)
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RootWidget.RemoveChild(WindowList.Pop());
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if (WindowList.Count > 0)
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rootWidget.AddChild(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 WidgetArgs());
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}
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public static Widget OpenWindow(string id, WidgetArgs 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.RemoveChild(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 Widget LoadWidget(string id, Widget parent, WidgetArgs args)
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{
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return Game.modData.WidgetLoader.LoadWidget(args, parent, id);
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}
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public static void DoTick()
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{
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RootWidget.Tick();
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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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public static void ResetAll()
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{
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RootWidget.RemoveChildren();
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while (Widget.WindowList.Count > 0)
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Widget.CloseWindow();
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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 Logic = null;
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public object LogicObject { get; private set; }
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public bool Visible = true;
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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 Func<bool> IsVisible;
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public Widget() { IsVisible = () => Visible; }
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protected readonly List<Widget> Children = new List<Widget>();
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public Func<MouseInput,bool> OnMouseUp = _ => false;
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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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Logic = widget.Logic;
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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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OnMouseUp = widget.OnMouseUp;
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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(WidgetArgs args)
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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 = args.ContainsKey("substitutions") ?
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new Dictionary<string, int>((Dictionary<string, int>)args["substitutions"]) :
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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(WidgetArgs args)
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{
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if (Logic == null)
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return;
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args["widget"] = this;
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LogicObject = Game.modData.ObjectCreator.CreateObject<object>(Logic, args);
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var iwd = LogicObject as ILogicWithInit;
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if (iwd != null)
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iwd.Init();
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args.Remove("widget");
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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 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)))
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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) ? GetCursor(pos) : null;
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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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return HandleMouseInput(mi);
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}
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// Hack: Don't eat mouse input that others want
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// TODO: Solve this properly
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public virtual bool HandleMouseInput(MouseInput mi)
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{
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// Apply any special logic added by event handlers; they return true if they caught the input
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if (mi.Event == MouseInputEvent.Up && OnMouseUp(mi)) return true;
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return false;
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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.OfType<Widget>().Reverse())
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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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return handled;
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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()
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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();
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}
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public virtual 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 virtual void RemoveChild(Widget child)
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{
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Children.Remove(child);
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child.Removed();
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}
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public virtual void RemoveChildren()
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{
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while (Children.Count > 0)
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RemoveChild(Children[Children.Count-1]);
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}
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public virtual void Removed()
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{
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foreach (var c in Children.OfType<Widget>().Reverse())
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c.Removed();
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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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}
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public class ContainerWidget : Widget
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{
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public ContainerWidget() : base() { }
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public ContainerWidget(ContainerWidget other)
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: 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 class WidgetArgs : Dictionary<string, object>
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{
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public WidgetArgs() : base() { }
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public WidgetArgs(Dictionary<string, object> args) : base(args) { }
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public void Add(string key, Action val) { base.Add(key, val); }
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}
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// TODO: you should use this anywhere you want to do
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// something in a logic ctor, but retain debuggability.
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public interface ILogicWithInit
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{
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void Init();
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}
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}
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