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Merge pull request #413 from Keboo/customColorTheme
Adding a new CustomColor theme option
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,211 @@ | ||
| using System; | ||
| using System.Collections.Generic; | ||
| using Avalonia; | ||
| using Avalonia.Collections; | ||
| using Avalonia.Controls; | ||
| using Avalonia.Media; | ||
| using Avalonia.Styling; | ||
| using Avalonia.Threading; | ||
| using Material.Styles.Themes.Base; | ||
|
|
||
| namespace Material.Styles.Themes; | ||
|
|
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| public class CustomMaterialTheme : MaterialThemeBase, IDisposable { | ||
|
|
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| public static readonly StyledProperty<Color?> PrimaryColorProperty = | ||
| AvaloniaProperty.Register<MaterialTheme, Color?>(nameof(PrimaryColor)); | ||
|
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| public static readonly StyledProperty<Color?> SecondaryColorProperty = | ||
| AvaloniaProperty.Register<MaterialTheme, Color?>(nameof(SecondaryColor)); | ||
|
|
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| private readonly ITheme _theme = new Theme(); | ||
|
|
||
| private bool _isLoaded; | ||
| private IThemeVariantHost? _lastThemeVariantHost; | ||
| private IDisposable? _themeUpdateDisposable; | ||
| private bool _disposedValue; | ||
|
|
||
| public IDictionary<ThemeVariant, CustomMaterialThemeResources> Palettes { get; } | ||
|
|
||
| /// <summary> | ||
| /// Initializes a new instance of the <see cref="MaterialTheme"/> class. | ||
| /// </summary> | ||
| /// <param name="serviceProvider">The XAML service provider.</param> | ||
| public CustomMaterialTheme(IServiceProvider serviceProvider) : base(serviceProvider) { | ||
| var palettes = new AvaloniaDictionary<ThemeVariant, CustomMaterialThemeResources>(2); | ||
| palettes.ForEachItem( | ||
| (key, x) => { | ||
| if (Owner is not null) { | ||
| ((IResourceProvider)x).AddOwner(Owner); | ||
| } | ||
|
|
||
| if (key != ThemeVariant.Dark && key != ThemeVariant.Light) { | ||
| throw new InvalidOperationException( | ||
| $"{nameof(CustomMaterialTheme)}.{nameof(CustomMaterialTheme.Palettes)} only supports Light and Dark variants."); | ||
| } | ||
| }, | ||
| (_, x) => { | ||
| if (Owner is not null) | ||
| ((IResourceProvider)x).RemoveOwner(Owner); | ||
| }, | ||
| () => throw new NotSupportedException("Dictionary reset not supported")); | ||
| Palettes = palettes; | ||
|
|
||
| OwnerChanged += OnOwnerChanged; | ||
| } | ||
|
|
||
| public Color? PrimaryColor { | ||
| get => GetValue(PrimaryColorProperty); | ||
| set => SetValue(PrimaryColorProperty, value); | ||
| } | ||
|
|
||
| public Color? SecondaryColor { | ||
| get => GetValue(SecondaryColorProperty); | ||
| set => SetValue(SecondaryColorProperty, value); | ||
| } | ||
| private void OnOwnerChanged(object? sender, EventArgs e) { | ||
| RegisterActualThemeObservable(); | ||
| } | ||
|
|
||
| protected override bool TryGetResource(object key, ThemeVariant? theme, out object? value) { | ||
| return base.TryGetResource(key, theme, out value) | ||
| || base.TryGetResource(key, GetVariantFromMaterialBaseThemeMode(ActualBaseTheme), out value); | ||
| } | ||
|
|
||
| private static ThemeVariant GetVariantFromMaterialBaseThemeMode(BaseThemeMode variant) { | ||
| return variant switch { | ||
| BaseThemeMode.Light => Theme.MaterialLight, | ||
| BaseThemeMode.Dark => Theme.MaterialDark, | ||
| _ => throw new ArgumentOutOfRangeException(nameof(variant), variant, null) | ||
| }; | ||
| } | ||
|
|
||
| /// <inheritdoc /> | ||
| protected override void OnPropertyChanged(AvaloniaPropertyChangedEventArgs change) { | ||
| base.OnPropertyChanged(change); | ||
|
|
||
| if (change.Property == BaseThemeProperty) { | ||
| SetupActualTheme(); | ||
| return; | ||
| } | ||
|
|
||
| if (change.Property == ActualBaseThemeProperty) { | ||
| var baseTheme = change.GetNewValue<BaseThemeMode>().GetBaseTheme(); | ||
| _theme.SetBaseTheme(baseTheme); | ||
| if (GetPrimaryColor() is { } primaryColor) { | ||
| _theme.SetPrimaryColor(primaryColor); | ||
| } | ||
| if (GetSecondaryColor() is { } secondaryColor) { | ||
| _theme.SetSecondaryColor(secondaryColor); | ||
| } | ||
| EnqueueThemeUpdate(); | ||
| return; | ||
| } | ||
|
|
||
| if (change.Property == PrimaryColorProperty) { | ||
| if (GetPrimaryColor() is { } primaryColor) { | ||
| _theme.SetPrimaryColor(primaryColor); | ||
| EnqueueThemeUpdate(); | ||
| } | ||
| return; | ||
| } | ||
|
|
||
| if (change.Property == SecondaryColorProperty) { | ||
| if (GetSecondaryColor() is { } secondaryColor) { | ||
| _theme.SetSecondaryColor(secondaryColor); | ||
| EnqueueThemeUpdate(); | ||
| } | ||
| } | ||
| } | ||
|
|
||
| private Color? GetPrimaryColor() { | ||
| Color? color = null; | ||
| if (GetActualThemeVariant() is { } themeVariant && | ||
| Palettes.TryGetValue(themeVariant, out var colorPalate)) { | ||
| color = colorPalate.PrimaryColor; | ||
| } | ||
| return color ?? PrimaryColor; | ||
| } | ||
|
|
||
| private Color? GetSecondaryColor() { | ||
| Color? color = null; | ||
| if (GetActualThemeVariant() is { } themeVariant && | ||
| Palettes.TryGetValue(themeVariant, out var colorPalate)) { | ||
| color = colorPalate.SecondaryColor; | ||
| } | ||
| return color ?? SecondaryColor; | ||
| } | ||
|
|
||
| private void EnqueueThemeUpdate() { | ||
| if (!_isLoaded) | ||
| return; | ||
|
|
||
| _themeUpdateDisposable?.Dispose(); | ||
| _themeUpdateDisposable = DispatcherTimer.RunOnce(() => CurrentTheme = _theme, TimeSpan.FromMilliseconds(100)); | ||
| } | ||
|
|
||
| private void RegisterActualThemeObservable() { | ||
| if (_lastThemeVariantHost is not null) | ||
| _lastThemeVariantHost.ActualThemeVariantChanged -= HostOnActualThemeVariantChanged; | ||
|
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| _lastThemeVariantHost = Owner as IThemeVariantHost; | ||
| if (_lastThemeVariantHost is not null) | ||
| _lastThemeVariantHost.ActualThemeVariantChanged += HostOnActualThemeVariantChanged; | ||
| SetupActualTheme(); | ||
| } | ||
|
|
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| private void HostOnActualThemeVariantChanged(object? sender, EventArgs e) { | ||
| SetupActualTheme(); | ||
| } | ||
|
|
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| private void SetupActualTheme() { | ||
| var materialBaseThemeModeFromVariant = BaseTheme switch { | ||
| BaseThemeMode.Inherit => GetMaterialBaseThemeModeFromVariant(_lastThemeVariantHost?.ActualThemeVariant) ?? BaseThemeMode.Light, | ||
| BaseThemeMode.Light => BaseThemeMode.Light, | ||
| BaseThemeMode.Dark => BaseThemeMode.Dark, | ||
| _ => throw new ArgumentOutOfRangeException(nameof(BaseTheme), BaseTheme, null) | ||
| }; | ||
|
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| ActualBaseTheme = materialBaseThemeModeFromVariant; | ||
| } | ||
|
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| private static BaseThemeMode? GetMaterialBaseThemeModeFromVariant(ThemeVariant? variant) { | ||
| while (true) { | ||
| if (variant is null) | ||
| return null; | ||
| if (variant == ThemeVariant.Light) | ||
| return BaseThemeMode.Light; | ||
| if (variant == ThemeVariant.Dark) | ||
| return BaseThemeMode.Dark; | ||
| variant = variant.InheritVariant; | ||
| } | ||
| } | ||
|
|
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| private ThemeVariant? GetActualThemeVariant() { | ||
| return ActualBaseTheme switch { | ||
| BaseThemeMode.Light => ThemeVariant.Light, | ||
| BaseThemeMode.Dark => ThemeVariant.Dark, | ||
| _ => null | ||
| }; | ||
| } | ||
|
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| protected override ITheme ProvideInitialTheme() { | ||
| _isLoaded = true; | ||
| return _theme; | ||
| } | ||
|
|
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| protected virtual void Dispose(bool disposing) { | ||
| if (!_disposedValue) { | ||
| if (disposing) { | ||
| _themeUpdateDisposable?.Dispose(); | ||
| } | ||
|
|
||
| _disposedValue = true; | ||
| } | ||
| } | ||
|
|
||
| public void Dispose() { | ||
| Dispose(disposing: true); | ||
| GC.SuppressFinalize(this); | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,9 @@ | ||
| using Avalonia.Media; | ||
|
|
||
| namespace Material.Styles.Themes; | ||
|
|
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| public class CustomMaterialThemeResources { | ||
| public Color? PrimaryColor { get; set; } | ||
|
|
||
| public Color? SecondaryColor { get; set; } | ||
| } |
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