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Edge scrolling

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This commit is contained in:
Paul Chote
2010-07-26 19:52:26 +12:00
parent 816722256b
commit dcef8770a7
3 changed files with 72 additions and 14 deletions
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68
OpenRA.Game/Widgets/ViewportScrollControllerWidget.cs
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@@ -30,15 +30,23 @@ namespace OpenRA.Widgets
class ViewportScrollControllerWidget : Widget
{
public int EdgeScrollThreshold = 15;
public bool EdgeScroll = true;
public bool KeyboardScroll = true;
public bool MouseScroll = true;
ScrollDirection Keyboard;
ScrollDirection Edge;
public ViewportScrollControllerWidget() : base() {}
protected ViewportScrollControllerWidget(ViewportScrollControllerWidget widget) : base(widget) {}
public override void DrawInner( World world ) {}
ScrollDirection Scroll;
public override bool HandleInputInner(MouseInput mi)
{
if (!MouseScroll)
return false;
if (mi.Event == MouseInputEvent.Move &&
(mi.Button == MouseButton.Middle || mi.Button == (MouseButton.Left | MouseButton.Right)))
{
@@ -50,38 +58,74 @@ namespace OpenRA.Widgets
public override string GetCursor(int2 pos)
{
if (!EdgeScroll)
return null;
if (Edge.Includes(ScrollDirection.Up) && Edge.Includes(ScrollDirection.Left))
return "scroll-tl";
if (Edge.Includes(ScrollDirection.Up) && Edge.Includes(ScrollDirection.Right))
return "scroll-tr";
if (Edge.Includes(ScrollDirection.Down) && Edge.Includes(ScrollDirection.Left))
return "scroll-bl";
if (Edge.Includes(ScrollDirection.Down) && Edge.Includes(ScrollDirection.Right))
return "scroll-br";
if (Edge.Includes(ScrollDirection.Up))
return "scroll-t";
if (Edge.Includes(ScrollDirection.Down))
return "scroll-b";
if (Edge.Includes(ScrollDirection.Left))
return "scroll-l";
if (Edge.Includes(ScrollDirection.Right))
return "scroll-r";
return null;
}
public override bool LoseFocus (MouseInput mi)
{
Scroll = ScrollDirection.None;
Keyboard = ScrollDirection.None;
return base.LoseFocus(mi);
}
public override bool HandleKeyPressInner(KeyInput e)
{
if (!KeyboardScroll)
return false;
switch (e.KeyName)
{
case "up": Scroll = Scroll.Set(ScrollDirection.Up, (e.Event == KeyInputEvent.Down)); return true;
case "down": Scroll = Scroll.Set(ScrollDirection.Down, (e.Event == KeyInputEvent.Down)); return true;
case "left": Scroll = Scroll.Set(ScrollDirection.Left, (e.Event == KeyInputEvent.Down)); return true;
case "right": Scroll = Scroll.Set(ScrollDirection.Right, (e.Event == KeyInputEvent.Down)); return true;
case "up": Keyboard = Keyboard.Set(ScrollDirection.Up, (e.Event == KeyInputEvent.Down)); return true;
case "down": Keyboard = Keyboard.Set(ScrollDirection.Down, (e.Event == KeyInputEvent.Down)); return true;
case "left": Keyboard = Keyboard.Set(ScrollDirection.Left, (e.Event == KeyInputEvent.Down)); return true;
case "right": Keyboard = Keyboard.Set(ScrollDirection.Right, (e.Event == KeyInputEvent.Down)); return true;
}
return false;
}
public override void Tick(World world)
{
Edge = ScrollDirection.None;
if (EdgeScroll)
{
// Check for edge-scroll
if (Widget.LastMousePos.X < EdgeScrollThreshold)
Edge = Edge.Set(ScrollDirection.Left, true);
if (Widget.LastMousePos.Y < EdgeScrollThreshold)
Edge = Edge.Set(ScrollDirection.Up, true);
if (Widget.LastMousePos.X >= Game.viewport.Width - EdgeScrollThreshold)
Edge = Edge.Set(ScrollDirection.Right, true);
if (Widget.LastMousePos.Y >= Game.viewport.Height - EdgeScrollThreshold)
Edge = Edge.Set(ScrollDirection.Down, true);
}
var scroll = new float2(0,0);
if (Scroll.Includes(ScrollDirection.Up))
if (Keyboard.Includes(ScrollDirection.Up) || Edge.Includes(ScrollDirection.Up))
scroll += new float2(0, -10);
if (Scroll.Includes(ScrollDirection.Right))
if (Keyboard.Includes(ScrollDirection.Right) || Edge.Includes(ScrollDirection.Right))
scroll += new float2(10, 0);
if (Scroll.Includes(ScrollDirection.Down))
if (Keyboard.Includes(ScrollDirection.Down) || Edge.Includes(ScrollDirection.Down))
scroll += new float2(0, 10);
if (Scroll.Includes(ScrollDirection.Left))
if (Keyboard.Includes(ScrollDirection.Left) || Edge.Includes(ScrollDirection.Left))
scroll += new float2(-10, 0);
Game.viewport.Scroll(scroll);