87 lines
2.6 KiB
C#
87 lines
2.6 KiB
C#
// Licensed to the .NET Foundation under one or more agreements.
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// The .NET Foundation licenses this file to you under the MIT license.
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using SkiaSharp;
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namespace Microsoft.Maui.Platform;
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/// <summary>
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/// Skia-rendered progress bar control.
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/// </summary>
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public class SkiaProgressBar : SkiaView
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{
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private double _progress;
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public double Progress
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{
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get => _progress;
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set
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{
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var clamped = Math.Clamp(value, 0, 1);
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if (_progress != clamped)
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{
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_progress = clamped;
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ProgressChanged?.Invoke(this, new ProgressChangedEventArgs(_progress));
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Invalidate();
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}
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}
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}
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public SKColor TrackColor { get; set; } = new SKColor(0xE0, 0xE0, 0xE0);
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public SKColor ProgressColor { get; set; } = new SKColor(0x21, 0x96, 0xF3);
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public SKColor DisabledColor { get; set; } = new SKColor(0xBD, 0xBD, 0xBD);
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public float Height { get; set; } = 4;
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public float CornerRadius { get; set; } = 2;
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public event EventHandler<ProgressChangedEventArgs>? ProgressChanged;
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protected override void OnDraw(SKCanvas canvas, SKRect bounds)
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{
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var trackY = bounds.MidY;
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var trackTop = trackY - Height / 2;
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var trackBottom = trackY + Height / 2;
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// Draw track
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using var trackPaint = new SKPaint
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{
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Color = IsEnabled ? TrackColor : DisabledColor,
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IsAntialias = true,
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Style = SKPaintStyle.Fill
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};
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var trackRect = new SKRoundRect(
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new SKRect(bounds.Left, trackTop, bounds.Right, trackBottom),
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CornerRadius);
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canvas.DrawRoundRect(trackRect, trackPaint);
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// Draw progress
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if (Progress > 0)
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{
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var progressWidth = bounds.Width * (float)Progress;
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using var progressPaint = new SKPaint
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{
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Color = IsEnabled ? ProgressColor : DisabledColor,
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IsAntialias = true,
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Style = SKPaintStyle.Fill
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};
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var progressRect = new SKRoundRect(
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new SKRect(bounds.Left, trackTop, bounds.Left + progressWidth, trackBottom),
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CornerRadius);
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canvas.DrawRoundRect(progressRect, progressPaint);
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}
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}
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protected override SKSize MeasureOverride(SKSize availableSize)
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{
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return new SKSize(200, Height + 8);
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}
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}
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public class ProgressChangedEventArgs : EventArgs
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{
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public double Progress { get; }
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public ProgressChangedEventArgs(double progress) => Progress = progress;
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}
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