aa121dcb2f
Use the covariant return type feature of C# 9 to allow method overrides to be more specific about their return type. By exposing this information, e.g. for Widget.Clone(), callers will have more information. This allows various casts to be removed as the information is now available within the type system.
98 lines
2.8 KiB
C#
98 lines
2.8 KiB
C#
#region Copyright & License Information
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/*
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* Copyright (c) The OpenRA Developers and Contributors
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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, either version 3 of
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* the License, or (at your option) any later version. For more
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* information, see COPYING.
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*/
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#endregion
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using System;
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using OpenRA.Graphics;
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using OpenRA.Primitives;
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using OpenRA.Widgets;
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namespace OpenRA.Mods.Common.Widgets
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{
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public class ScrollItemWidget : ButtonWidget
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{
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public new readonly string Background = "scrollitem";
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public readonly bool EnableChildMouseOver = false;
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public string ItemKey;
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readonly CachedTransform<(bool, bool, bool, bool, bool), Sprite[]> getPanelCache;
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[ObjectCreator.UseCtor]
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public ScrollItemWidget(ModData modData)
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: base(modData)
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{
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IsVisible = () => false;
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VisualHeight = 0;
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getPanelCache = WidgetUtils.GetCachedStatefulPanelImages(Background);
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}
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protected ScrollItemWidget(ScrollItemWidget other)
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: base(other)
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{
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IsVisible = () => false;
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VisualHeight = 0;
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Key = other.Key;
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Background = other.Background;
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EnableChildMouseOver = other.EnableChildMouseOver;
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getPanelCache = WidgetUtils.GetCachedStatefulPanelImages(Background);
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}
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public override void Initialize(WidgetArgs args)
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{
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base.Initialize(args);
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// HACK: We want to default IgnoreChildMouseOver to true in this widget
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// but still allow it to be disabled
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IgnoreChildMouseOver = !EnableChildMouseOver;
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}
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public Func<bool> IsSelected = () => false;
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public override void Draw()
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{
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if (string.IsNullOrEmpty(Background))
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return;
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// PERF: Only check for ourself or our direct children
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var hover = Ui.MouseOverWidget == this;
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if (!IgnoreChildMouseOver && !hover)
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hover = Children.Contains(Ui.MouseOverWidget);
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WidgetUtils.DrawPanel(RenderBounds, getPanelCache.Update((IsDisabled(), Depressed, hover, false, IsSelected() || IsHighlighted())));
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}
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public override ScrollItemWidget Clone() { return new ScrollItemWidget(this); }
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public static ScrollItemWidget Setup(ScrollItemWidget template, Func<bool> isSelected, Action onClick)
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{
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var w = template.Clone();
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w.IsVisible = () => true;
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w.IsSelected = isSelected;
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w.OnClick = onClick;
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return w;
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}
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public static ScrollItemWidget Setup(ScrollItemWidget template, Func<bool> isSelected, Action onClick, Action onDoubleClick)
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{
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var w = Setup(template, isSelected, onClick);
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w.OnDoubleClick = onDoubleClick;
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return w;
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}
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public static ScrollItemWidget Setup(string key, ScrollItemWidget template, Func<bool> isSelected, Action onClick, Action onDoubleClick)
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{
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var w = Setup(template, isSelected, onClick);
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w.OnDoubleClick = onDoubleClick;
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w.ItemKey = key;
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return w;
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}
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}
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}
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