New textfield with support for hover and disabled states.

OpenRA.Mods.Cnc/Widgets/CncMenuButton.cs

@@ -153,8 +153,81 @@ namespace OpenRA.Mods.Cnc.Widgets
 		{
 			ListOffset = Math.Min(0,Bounds.Height - ContentHeight);
 		}
-		public override Widget Clone() { return new CncScrollPanelWidget(this); }
 
+		public override Widget Clone() { return new CncScrollPanelWidget(this); }
+	}
+
+	public class CncTextFieldWidget : TextFieldWidget
+	{
+		public CncTextFieldWidget()
+			: base() { }
+		protected CncTextFieldWidget(CncTextFieldWidget widget)
+			: base(widget) { }
+
+		public Func<bool> IsDisabled = () => false;
+		public Color TextColor = Color.White;
+		public Color DisabledColor = Color.Gray;
+
+		public override bool HandleMouseInput(MouseInput mi)
+		{
+			if (IsDisabled())
+				return false;
+			return base.HandleMouseInput(mi);
+		}
+
+		public override bool HandleKeyPressInner(KeyInput e)
+		{
+			if (IsDisabled())
+				return false;
+			return base.HandleKeyPressInner(e);
+		}
+
+		public override void DrawWithString(string text)
+		{
+			if (text == null) text = "";
+
+			var font = (Bold) ? Game.Renderer.BoldFont : Game.Renderer.RegularFont;
+			var pos = RenderOrigin;
+
+			if (CursorPosition > text.Length)
+				CursorPosition = text.Length;
+
+			var textSize = font.Measure(text);
+			var cursorPosition = font.Measure(text.Substring(0,CursorPosition));
+
+			var disabled = IsDisabled();
+			var state = disabled ? "button-disabled" :
+				Focused ? "button-pressed" :
+				RenderBounds.Contains(Viewport.LastMousePos) ? "button-hover" :
+				"button";
+
+			WidgetUtils.DrawPanel(state,
+				new Rectangle(pos.X, pos.Y, Bounds.Width, Bounds.Height));
+
+			// Inset text by the margin and center vertically
+			var textPos = pos + new int2(LeftMargin, (Bounds.Height - textSize.Y) / 2 - VisualHeight);
+
+			// Right align when editing and scissor when the text overflows
+			if (textSize.X > Bounds.Width - LeftMargin - RightMargin)
+			{
+				if (Focused)
+					textPos += new int2(Bounds.Width - LeftMargin - RightMargin - textSize.X, 0);
+
+				Game.Renderer.EnableScissor(pos.X + LeftMargin, pos.Y, Bounds.Width - LeftMargin - RightMargin, Bounds.Bottom);
+			}
+
+			var color = disabled ? DisabledColor : TextColor;
+
+			font.DrawText(text, textPos, color);
+
+			if (showCursor && Focused)
+				font.DrawText("|", new float2(textPos.X + cursorPosition.X - 2, textPos.Y), color);
+
+			if (textSize.X > Bounds.Width - LeftMargin - RightMargin)
+				Game.Renderer.DisableScissor();
+		}
+
+		public override Widget Clone() { return new CncTextFieldWidget(this); }
 	}
 }