149 lines
4.4 KiB
C#
149 lines
4.4 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.Orders;
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using OpenRA.Traits;
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using OpenRA.FileFormats;
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namespace OpenRA.Widgets
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{
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[Flags]
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public enum ScrollDirection
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{
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None = 0,
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Up = 1,
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Left = 2,
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Down = 4,
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Right = 8
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}
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class ViewportScrollControllerWidget : Widget
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{
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public int EdgeScrollThreshold = 15;
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public bool EdgeScroll = true;
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public bool KeyboardScroll = true;
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public bool MouseScroll = true;
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ScrollDirection Keyboard;
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ScrollDirection Edge;
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public ViewportScrollControllerWidget() : base() {}
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protected ViewportScrollControllerWidget(ViewportScrollControllerWidget widget) : base(widget) {}
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public override void DrawInner( World world ) {}
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public override bool HandleInputInner(MouseInput mi)
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{
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if (!MouseScroll)
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return false;
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if (mi.Event == MouseInputEvent.Move &&
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(mi.Button == MouseButton.Middle || mi.Button == (MouseButton.Left | MouseButton.Right)))
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{
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Game.viewport.Scroll(Widget.LastMousePos - mi.Location);
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return true;
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}
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return false;
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}
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public override string GetCursor(int2 pos)
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{
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if (!EdgeScroll)
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return null;
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if (Edge.Includes(ScrollDirection.Up) && Edge.Includes(ScrollDirection.Left))
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return "scroll-tl";
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if (Edge.Includes(ScrollDirection.Up) && Edge.Includes(ScrollDirection.Right))
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return "scroll-tr";
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if (Edge.Includes(ScrollDirection.Down) && Edge.Includes(ScrollDirection.Left))
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return "scroll-bl";
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if (Edge.Includes(ScrollDirection.Down) && Edge.Includes(ScrollDirection.Right))
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return "scroll-br";
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if (Edge.Includes(ScrollDirection.Up))
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return "scroll-t";
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if (Edge.Includes(ScrollDirection.Down))
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return "scroll-b";
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if (Edge.Includes(ScrollDirection.Left))
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return "scroll-l";
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if (Edge.Includes(ScrollDirection.Right))
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return "scroll-r";
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return null;
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}
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public override bool LoseFocus (MouseInput mi)
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{
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Keyboard = ScrollDirection.None;
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return base.LoseFocus(mi);
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}
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public override bool HandleKeyPressInner(KeyInput e)
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{
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if (!KeyboardScroll)
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return false;
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switch (e.KeyName)
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{
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case "up": Keyboard = Keyboard.Set(ScrollDirection.Up, (e.Event == KeyInputEvent.Down)); return true;
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case "down": Keyboard = Keyboard.Set(ScrollDirection.Down, (e.Event == KeyInputEvent.Down)); return true;
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case "left": Keyboard = Keyboard.Set(ScrollDirection.Left, (e.Event == KeyInputEvent.Down)); return true;
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case "right": Keyboard = Keyboard.Set(ScrollDirection.Right, (e.Event == KeyInputEvent.Down)); return true;
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}
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return false;
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}
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public override void Tick(World world)
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{
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Edge = ScrollDirection.None;
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if (EdgeScroll)
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{
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// Check for edge-scroll
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if (Widget.LastMousePos.X < EdgeScrollThreshold)
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Edge = Edge.Set(ScrollDirection.Left, true);
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if (Widget.LastMousePos.Y < EdgeScrollThreshold)
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Edge = Edge.Set(ScrollDirection.Up, true);
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if (Widget.LastMousePos.X >= Game.viewport.Width - EdgeScrollThreshold)
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Edge = Edge.Set(ScrollDirection.Right, true);
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if (Widget.LastMousePos.Y >= Game.viewport.Height - EdgeScrollThreshold)
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Edge = Edge.Set(ScrollDirection.Down, true);
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}
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var scroll = new float2(0,0);
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if (Keyboard.Includes(ScrollDirection.Up) || Edge.Includes(ScrollDirection.Up))
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scroll += new float2(0, -10);
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if (Keyboard.Includes(ScrollDirection.Right) || Edge.Includes(ScrollDirection.Right))
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scroll += new float2(10, 0);
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if (Keyboard.Includes(ScrollDirection.Down) || Edge.Includes(ScrollDirection.Down))
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scroll += new float2(0, 10);
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if (Keyboard.Includes(ScrollDirection.Left) || Edge.Includes(ScrollDirection.Left))
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scroll += new float2(-10, 0);
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Game.viewport.Scroll(scroll);
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}
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public override Widget Clone() { return new ViewportScrollControllerWidget(this); }
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}
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public static class ViewportExts
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{
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public static bool Includes(this ScrollDirection d, ScrollDirection s)
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{
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return (d & s) == s;
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}
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public static ScrollDirection Set(this ScrollDirection d, ScrollDirection s, bool val)
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{
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return (d.Includes(s) != val) ? d ^ s : d;
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}
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}
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} |