90 lines
2.7 KiB
C#
90 lines
2.7 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 Microsoft.Maui.Handlers;
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using Microsoft.Maui.Graphics;
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using Microsoft.Maui.Platform;
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using SkiaSharp;
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namespace Microsoft.Maui.Platform.Linux.Handlers;
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/// <summary>
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/// Handler for Stepper on Linux using Skia rendering.
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/// </summary>
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public partial class StepperHandler : ViewHandler<IStepper, SkiaStepper>
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{
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public static IPropertyMapper<IStepper, StepperHandler> Mapper =
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new PropertyMapper<IStepper, StepperHandler>(ViewHandler.ViewMapper)
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{
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[nameof(IStepper.Value)] = MapValue,
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[nameof(IStepper.Minimum)] = MapMinimum,
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[nameof(IStepper.Maximum)] = MapMaximum,
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[nameof(IView.Background)] = MapBackground,
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};
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public static CommandMapper<IStepper, StepperHandler> CommandMapper =
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new(ViewHandler.ViewCommandMapper)
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{
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};
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public StepperHandler() : base(Mapper, CommandMapper)
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{
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}
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public StepperHandler(IPropertyMapper? mapper, CommandMapper? commandMapper = null)
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: base(mapper ?? Mapper, commandMapper ?? CommandMapper)
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{
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}
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protected override SkiaStepper CreatePlatformView()
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{
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return new SkiaStepper();
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}
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protected override void ConnectHandler(SkiaStepper platformView)
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{
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base.ConnectHandler(platformView);
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platformView.ValueChanged += OnValueChanged;
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}
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protected override void DisconnectHandler(SkiaStepper platformView)
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{
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platformView.ValueChanged -= OnValueChanged;
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base.DisconnectHandler(platformView);
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}
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private void OnValueChanged(object? sender, EventArgs e)
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{
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if (VirtualView is null || PlatformView is null) return;
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VirtualView.Value = PlatformView.Value;
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}
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public static void MapValue(StepperHandler handler, IStepper stepper)
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{
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if (handler.PlatformView is null) return;
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handler.PlatformView.Value = stepper.Value;
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}
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public static void MapMinimum(StepperHandler handler, IStepper stepper)
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{
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if (handler.PlatformView is null) return;
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handler.PlatformView.Minimum = stepper.Minimum;
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}
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public static void MapMaximum(StepperHandler handler, IStepper stepper)
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{
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if (handler.PlatformView is null) return;
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handler.PlatformView.Maximum = stepper.Maximum;
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}
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public static void MapBackground(StepperHandler handler, IStepper stepper)
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{
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if (handler.PlatformView is null) return;
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if (stepper.Background is SolidPaint solidPaint && solidPaint.Color is not null)
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{
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handler.PlatformView.BackgroundColor = solidPaint.Color.ToSKColor();
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}
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}
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}
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