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.
86 lines
2.3 KiB
C#
86 lines
2.3 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 ProgressBarWidget : Widget
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{
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public string Background = "progressbar-bg";
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public string Bar = "progressbar-thumb";
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public Size BarMargin = new(2, 2);
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public int Percentage = 0;
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public bool Indeterminate = false;
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public Func<int> GetPercentage;
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public Func<bool> IsIndeterminate;
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// Indeterminate bar properties
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float offset = 0f;
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float tickStep = 0.04f;
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public ProgressBarWidget()
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{
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GetPercentage = () => Percentage;
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IsIndeterminate = () => Indeterminate;
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}
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protected ProgressBarWidget(ProgressBarWidget other)
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: base(other)
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{
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Percentage = other.Percentage;
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GetPercentage = other.GetPercentage;
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IsIndeterminate = other.IsIndeterminate;
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}
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public override void Draw()
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{
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var rb = RenderBounds;
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var percentage = GetPercentage();
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WidgetUtils.DrawPanel(Background, rb);
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var minBarWidth = ChromeProvider.GetMinimumPanelSize(Bar).Width;
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var maxBarWidth = rb.Width - BarMargin.Width * 2;
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var barWidth = wasIndeterminate ? maxBarWidth / 4 : percentage * maxBarWidth / 100;
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barWidth = Math.Max(barWidth, minBarWidth);
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var barOffset = wasIndeterminate ? (int)(0.75 * offset * maxBarWidth) : 0;
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var barRect = new Rectangle(rb.X + BarMargin.Width + barOffset, rb.Y + BarMargin.Height, barWidth, rb.Height - 2 * BarMargin.Height);
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WidgetUtils.DrawPanel(Bar, barRect);
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}
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bool wasIndeterminate;
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public override void Tick()
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{
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var indeterminate = IsIndeterminate();
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if (indeterminate != wasIndeterminate)
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offset = 0f;
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if (indeterminate)
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{
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offset += tickStep;
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offset = offset.Clamp(0f, 1f);
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if (offset == 0f || offset == 1f)
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tickStep *= -1;
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}
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wasIndeterminate = indeterminate;
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}
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public override ProgressBarWidget Clone() { return new ProgressBarWidget(this); }
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}
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}
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