diff --git a/samples/ControlCatalog/Pages/ColorPickerPage.xaml b/samples/ControlCatalog/Pages/ColorPickerPage.xaml index ad54eb95fc..69ceaea328 100644 --- a/samples/ControlCatalog/Pages/ColorPickerPage.xaml +++ b/samples/ControlCatalog/Pages/ColorPickerPage.xaml @@ -11,16 +11,17 @@ x:Class="ControlCatalog.Pages.ColorPickerPage"> - - @@ -56,8 +57,5 @@ IsAccentColorsVisible="False" HsvColor="{Binding HsvColor, ElementName=ColorSpectrum1}" /> - - diff --git a/samples/ControlCatalog/Pages/ColorPickerPage.xaml.cs b/samples/ControlCatalog/Pages/ColorPickerPage.xaml.cs index 6e017e381f..4671bbdb7c 100644 --- a/samples/ControlCatalog/Pages/ColorPickerPage.xaml.cs +++ b/samples/ControlCatalog/Pages/ColorPickerPage.xaml.cs @@ -1,6 +1,8 @@ using Avalonia; using Avalonia.Controls; +using Avalonia.Layout; using Avalonia.Markup.Xaml; +using Avalonia.Media; namespace ControlCatalog.Pages { @@ -9,6 +11,20 @@ namespace ControlCatalog.Pages public ColorPickerPage() { InitializeComponent(); + + var layoutRoot = this.GetControl("LayoutRoot"); + + // ColorPicker added from code-behind + var colorPicker = new ColorPicker() + { + Color = Colors.Blue, + Margin = new Thickness(0, 50, 0, 0), + HorizontalAlignment = HorizontalAlignment.Center, + }; + Grid.SetColumn(colorPicker, 2); + Grid.SetRow(colorPicker, 1); + + layoutRoot.Children.Add(colorPicker); } private void InitializeComponent() diff --git a/src/Avalonia.Controls.ColorPicker/ColorPicker/ColorPicker.cs b/src/Avalonia.Controls.ColorPicker/ColorPicker/ColorPicker.cs index 39369bcbdb..29f9f3c571 100644 --- a/src/Avalonia.Controls.ColorPicker/ColorPicker/ColorPicker.cs +++ b/src/Avalonia.Controls.ColorPicker/ColorPicker/ColorPicker.cs @@ -1,4 +1,6 @@ -namespace Avalonia.Controls +using Avalonia.Controls.Primitives; + +namespace Avalonia.Controls { /// /// Presents a color for user editing using a spectrum, palette and component sliders within a drop down. @@ -11,8 +13,33 @@ /// public ColorPicker() : base() { - // Completely ignore property changes here - // The ColorView in the control template is responsible to manage this + } + + /// + protected override void OnApplyTemplate(TemplateAppliedEventArgs e) + { + base.OnApplyTemplate(e); + + // Until this point the ColorPicker itself is responsible to process property updates. + // This, for example, syncs Color with HsvColor and updates primitive controls. + // + // However, when the template is created, hand-off this change processing to the + // ColorView within the control template itself. Remember ColorPicker derives from + // ColorView so we don't want two instances of the same logic fighting each other. + // It is best to hand-off to the ColorView in the control template because that is the + // primary point of user-interaction for the overall control. It also simplifies binding. + // + // Keep in mind this hand-off is not possible until the template controls are created + // which is done after the ColorPicker is instantiated. The ColorPicker must still + // process updates before the template is applied to ensure all property changes in + // XAML or object initializers are handled correctly. Otherwise, there can be bugs + // such as setting the Color property doesn't work because the HsvColor is never updated + // and then the Color value is lost once the template loads (and the template ColorView + // takes over). + // + // In order to complete this hand-off, completely ignore property changes here in the + // ColorPicker. This means the ColorView in the control template is now responsible to + // process property changes and handle primary calculations. base.ignorePropertyChanged = true; } } diff --git a/src/Avalonia.Controls.ColorPicker/ColorSlider/ColorSlider.cs b/src/Avalonia.Controls.ColorPicker/ColorSlider/ColorSlider.cs index b662d20223..ec08e96d87 100644 --- a/src/Avalonia.Controls.ColorPicker/ColorSlider/ColorSlider.cs +++ b/src/Avalonia.Controls.ColorPicker/ColorSlider/ColorSlider.cs @@ -2,6 +2,7 @@ using Avalonia.Controls.Metadata; using Avalonia.Layout; using Avalonia.Media; +using Avalonia.Media.Imaging; using Avalonia.Utilities; namespace Avalonia.Controls.Primitives @@ -31,6 +32,8 @@ namespace Avalonia.Controls.Primitives protected bool ignorePropertyChanged = false; + private WriteableBitmap? _backgroundBitmap; + /// /// Initializes a new instance of the class. /// @@ -38,6 +41,18 @@ namespace Avalonia.Controls.Primitives { } + /// + protected override void OnAttachedToVisualTree(VisualTreeAttachmentEventArgs e) + { + base.OnAttachedToVisualTree(e); + } + + /// + protected override void OnDetachedFromVisualTree(VisualTreeAttachmentEventArgs e) + { + base.OnDetachedFromVisualTree(e); + } + /// /// Updates the visual state of the control by applying latest PseudoClasses. /// @@ -98,7 +113,7 @@ namespace Avalonia.Controls.Primitives if (pixelWidth != 0 && pixelHeight != 0) { - var bitmap = await ColorPickerHelpers.CreateComponentBitmapAsync( + ArrayList bgraPixelData = await ColorPickerHelpers.CreateComponentBitmapAsync( pixelWidth, pixelHeight, Orientation, @@ -108,9 +123,27 @@ namespace Avalonia.Controls.Primitives IsAlphaMaxForced, IsSaturationValueMaxForced); - if (bitmap != null) + if (bgraPixelData != null) { - Background = new ImageBrush(ColorPickerHelpers.CreateBitmapFromPixelData(bitmap, pixelWidth, pixelHeight)); + if (_backgroundBitmap != null) + { + // TODO: CURRENTLY DISABLED DUE TO INTERMITTENT CRASHES IN SKIA/RENDERER + // + // Re-use the existing WriteableBitmap + // This assumes the height, width and byte counts are the same and must be set to null + // elsewhere if that assumption is ever not true. + // ColorPickerHelpers.UpdateBitmapFromPixelData(_backgroundBitmap, bgraPixelData); + + // TODO: ALSO DISABLED DISPOSE DUE TO INTERMITTENT CRASHES + //_backgroundBitmap?.Dispose(); + _backgroundBitmap = ColorPickerHelpers.CreateBitmapFromPixelData(bgraPixelData, pixelWidth, pixelHeight); + } + else + { + _backgroundBitmap = ColorPickerHelpers.CreateBitmapFromPixelData(bgraPixelData, pixelWidth, pixelHeight); + } + + Background = new ImageBrush(_backgroundBitmap); } } } @@ -350,11 +383,11 @@ namespace Avalonia.Controls.Primitives return; } - // Always keep the two color properties in sync if (change.Property == ColorProperty) { ignorePropertyChanged = true; + // Always keep the two color properties in sync HsvColor = Color.ToHsv(); SetColorToSliderValues(); @@ -367,7 +400,10 @@ namespace Avalonia.Controls.Primitives ignorePropertyChanged = false; } - else if (change.Property == ColorModelProperty) + else if (change.Property == ColorComponentProperty || + change.Property == ColorModelProperty || + change.Property == IsAlphaMaxForcedProperty || + change.Property == IsSaturationValueMaxForcedProperty) { ignorePropertyChanged = true; @@ -381,6 +417,7 @@ namespace Avalonia.Controls.Primitives { ignorePropertyChanged = true; + // Always keep the two color properties in sync Color = HsvColor.ToRgb(); SetColorToSliderValues(); @@ -399,7 +436,13 @@ namespace Avalonia.Controls.Primitives } else if (change.Property == BoundsProperty) { + // If the control's overall dimensions have changed the background bitmap size also needs to change. + // This means the existing bitmap must be released to be recreated correctly in UpdateBackground(). + _backgroundBitmap?.Dispose(); + _backgroundBitmap = null; + UpdateBackground(); + UpdatePseudoClasses(); } else if (change.Property == ValueProperty || change.Property == MinimumProperty || diff --git a/src/Avalonia.Controls.ColorPicker/ColorSpectrum/ColorSpectrum.Properties.cs b/src/Avalonia.Controls.ColorPicker/ColorSpectrum/ColorSpectrum.Properties.cs index 00d84f5dd3..39b7b7f660 100644 --- a/src/Avalonia.Controls.ColorPicker/ColorSpectrum/ColorSpectrum.Properties.cs +++ b/src/Avalonia.Controls.ColorPicker/ColorSpectrum/ColorSpectrum.Properties.cs @@ -93,6 +93,14 @@ namespace Avalonia.Controls.Primitives nameof(Shape), ColorSpectrumShape.Box); + /// + /// Defines the property. + /// + public static readonly StyledProperty ThirdComponentProperty = + AvaloniaProperty.Register( + nameof(ThirdComponent), + ColorComponent.Component3); // Value + /// /// Gets or sets the currently selected color in the RGB color model. /// @@ -218,5 +226,21 @@ namespace Avalonia.Controls.Primitives get => GetValue(ShapeProperty); set => SetValue(ShapeProperty, value); } + + /// + /// Gets the third HSV color component that is NOT displayed by the spectrum. + /// This is automatically calculated from the property. + /// + /// + /// This property should be used for any external color slider that represents the + /// third component of the color. Note that this property uses the generic + /// type instead of the more accurate + /// to allow direct usage by the generalized color sliders. + /// + public ColorComponent ThirdComponent + { + get => GetValue(ThirdComponentProperty); + private set => SetValue(ThirdComponentProperty, value); + } } } diff --git a/src/Avalonia.Controls.ColorPicker/ColorSpectrum/ColorSpectrum.cs b/src/Avalonia.Controls.ColorPicker/ColorSpectrum/ColorSpectrum.cs index bd44161a42..f0ed89fb3a 100644 --- a/src/Avalonia.Controls.ColorPicker/ColorSpectrum/ColorSpectrum.cs +++ b/src/Avalonia.Controls.ColorPicker/ColorSpectrum/ColorSpectrum.cs @@ -73,6 +73,8 @@ namespace Avalonia.Controls.Primitives private WriteableBitmap? _saturationMaximumBitmap; private WriteableBitmap? _valueBitmap; + private WriteableBitmap? _minBitmap; + private WriteableBitmap? _maxBitmap; // Fields used by UpdateEllipse() to ensure that it's using the data // associated with the last call to CreateBitmapsAndColorMap(), @@ -95,7 +97,7 @@ namespace Avalonia.Controls.Primitives /// /// Initializes a new instance of the class. /// - public ColorSpectrum() + public ColorSpectrum() : base() { _shapeFromLastBitmapCreation = Shape; _componentsFromLastBitmapCreation = Components; @@ -171,6 +173,18 @@ namespace Avalonia.Controls.Primitives { base.OnAttachedToVisualTree(e); + // If the color was updated while this ColorSpectrum was not part of the visual tree, + // the selection ellipse may be in an incorrect position. This is because the spectrum + // renders based on layout scaling to avoid color banding; however, layout scale is only + // available when the control is attached to the visual tree. The ColorSpectrum's color + // may be updated from code-behind or from binding with another control when it's not + // part of the visual tree. + // + // See discussion: https://github.com/AvaloniaUI/Avalonia/discussions/9077 + // + // To work-around this issue the selection ellipse is refreshed here. + UpdateEllipse(); + // OnAttachedToVisualTree is called after OnApplyTemplate so events cannot be connected here } @@ -489,6 +503,23 @@ namespace Avalonia.Controls.Primitives } else if (change.Property == ComponentsProperty) { + // Calculate and update the ThirdComponent value + switch (Components) + { + case ColorSpectrumComponents.HueSaturation: + case ColorSpectrumComponents.SaturationHue: + ThirdComponent = (ColorComponent)HsvComponent.Value; + break; + case ColorSpectrumComponents.HueValue: + case ColorSpectrumComponents.ValueHue: + ThirdComponent = (ColorComponent)HsvComponent.Saturation; + break; + case ColorSpectrumComponents.SaturationValue: + case ColorSpectrumComponents.ValueSaturation: + ThirdComponent = (ColorComponent)HsvComponent.Hue; + break; + } + CreateBitmapsAndColorMap(); } @@ -588,6 +619,10 @@ namespace Avalonia.Controls.Primitives RaiseColorChanged(); } + /// + /// Updates the selected and based on a point within the color spectrum. + /// + /// The point on the spectrum representing the color. private void UpdateColorFromPoint(PointerPoint point) { // If we haven't initialized our HSV value array yet, then we should just ignore any user input - @@ -664,6 +699,9 @@ namespace Avalonia.Controls.Primitives UpdateColor(hsvAtPoint); } + /// + /// Updates the position of the selection ellipse on the spectrum which indicates the selected color. + /// private void UpdateEllipse() { if (_selectionEllipsePanel == null) @@ -832,6 +870,8 @@ namespace Avalonia.Controls.Primitives } // Remember the bitmap size follows physical device pixels + // Warning: LayoutHelper.GetLayoutScale() doesn't work unless the control is visible + // This will not be true in all cases if the color is updated from another control or code-behind var scale = LayoutHelper.GetLayoutScale(this); Canvas.SetLeft(_selectionEllipsePanel, (xPosition / scale) - (_selectionEllipsePanel.Width / 2)); Canvas.SetTop(_selectionEllipsePanel, (yPosition / scale) - (_selectionEllipsePanel.Height / 2)); @@ -973,13 +1013,13 @@ namespace Avalonia.Controls.Primitives // The middle 4 are only needed and used in the case of hue as the third dimension. // Saturation and luminosity need only a min and max. - List bgraMinPixelData = new List(); - List bgraMiddle1PixelData = new List(); - List bgraMiddle2PixelData = new List(); - List bgraMiddle3PixelData = new List(); - List bgraMiddle4PixelData = new List(); - List bgraMaxPixelData = new List(); - List newHsvValues = new List(); + ArrayList bgraMinPixelData; + ArrayList bgraMiddle1PixelData; + ArrayList bgraMiddle2PixelData; + ArrayList bgraMiddle3PixelData; + ArrayList bgraMiddle4PixelData; + ArrayList bgraMaxPixelData; + List newHsvValues; // In Avalonia, Bounds returns the actual device-independent pixel size of a control. // However, this is not necessarily the size of the control rendered on a display. @@ -990,20 +1030,27 @@ namespace Avalonia.Controls.Primitives int pixelDimension = (int)Math.Round(minDimension * scale); var pixelCount = pixelDimension * pixelDimension; var pixelDataSize = pixelCount * 4; - bgraMinPixelData.Capacity = pixelDataSize; + + bgraMinPixelData = new ArrayList(pixelDataSize); + bgraMaxPixelData = new ArrayList(pixelDataSize); + newHsvValues = new List(pixelCount); // We'll only save pixel data for the middle bitmaps if our third dimension is hue. if (components == ColorSpectrumComponents.ValueSaturation || components == ColorSpectrumComponents.SaturationValue) { - bgraMiddle1PixelData.Capacity = pixelDataSize; - bgraMiddle2PixelData.Capacity = pixelDataSize; - bgraMiddle3PixelData.Capacity = pixelDataSize; - bgraMiddle4PixelData.Capacity = pixelDataSize; + bgraMiddle1PixelData = new ArrayList(pixelDataSize); + bgraMiddle2PixelData = new ArrayList(pixelDataSize); + bgraMiddle3PixelData = new ArrayList(pixelDataSize); + bgraMiddle4PixelData = new ArrayList(pixelDataSize); + } + else + { + bgraMiddle1PixelData = new ArrayList(0); + bgraMiddle2PixelData = new ArrayList(0); + bgraMiddle3PixelData = new ArrayList(0); + bgraMiddle4PixelData = new ArrayList(0); } - - bgraMaxPixelData.Capacity = pixelDataSize; - newHsvValues.Capacity = pixelCount; await Task.Run(() => { @@ -1056,28 +1103,28 @@ namespace Avalonia.Controls.Primitives ColorSpectrumComponents components2 = Components; - WriteableBitmap minBitmap = ColorPickerHelpers.CreateBitmapFromPixelData(bgraMinPixelData, pixelWidth, pixelHeight); - WriteableBitmap maxBitmap = ColorPickerHelpers.CreateBitmapFromPixelData(bgraMaxPixelData, pixelWidth, pixelHeight); + _minBitmap = ColorPickerHelpers.CreateBitmapFromPixelData(bgraMinPixelData, pixelWidth, pixelHeight); + _maxBitmap = ColorPickerHelpers.CreateBitmapFromPixelData(bgraMaxPixelData, pixelWidth, pixelHeight); switch (components2) { case ColorSpectrumComponents.HueValue: case ColorSpectrumComponents.ValueHue: - _saturationMinimumBitmap = minBitmap; - _saturationMaximumBitmap = maxBitmap; + _saturationMinimumBitmap = _minBitmap; + _saturationMaximumBitmap = _maxBitmap; break; case ColorSpectrumComponents.HueSaturation: case ColorSpectrumComponents.SaturationHue: - _valueBitmap = maxBitmap; + _valueBitmap = _maxBitmap; break; case ColorSpectrumComponents.ValueSaturation: case ColorSpectrumComponents.SaturationValue: - _hueRedBitmap = minBitmap; + _hueRedBitmap = _minBitmap; _hueYellowBitmap = ColorPickerHelpers.CreateBitmapFromPixelData(bgraMiddle1PixelData, pixelWidth, pixelHeight); _hueGreenBitmap = ColorPickerHelpers.CreateBitmapFromPixelData(bgraMiddle2PixelData, pixelWidth, pixelHeight); _hueCyanBitmap = ColorPickerHelpers.CreateBitmapFromPixelData(bgraMiddle3PixelData, pixelWidth, pixelHeight); _hueBlueBitmap = ColorPickerHelpers.CreateBitmapFromPixelData(bgraMiddle4PixelData, pixelWidth, pixelHeight); - _huePurpleBitmap = maxBitmap; + _huePurpleBitmap = _maxBitmap; break; } @@ -1111,12 +1158,12 @@ namespace Avalonia.Controls.Primitives double maxSaturation, double minValue, double maxValue, - List bgraMinPixelData, - List bgraMiddle1PixelData, - List bgraMiddle2PixelData, - List bgraMiddle3PixelData, - List bgraMiddle4PixelData, - List bgraMaxPixelData, + ArrayList bgraMinPixelData, + ArrayList bgraMiddle1PixelData, + ArrayList bgraMiddle2PixelData, + ArrayList bgraMiddle3PixelData, + ArrayList bgraMiddle4PixelData, + ArrayList bgraMaxPixelData, List newHsvValues) { double hMin = minHue; @@ -1271,12 +1318,12 @@ namespace Avalonia.Controls.Primitives double maxSaturation, double minValue, double maxValue, - List bgraMinPixelData, - List bgraMiddle1PixelData, - List bgraMiddle2PixelData, - List bgraMiddle3PixelData, - List bgraMiddle4PixelData, - List bgraMaxPixelData, + ArrayList bgraMinPixelData, + ArrayList bgraMiddle1PixelData, + ArrayList bgraMiddle2PixelData, + ArrayList bgraMiddle3PixelData, + ArrayList bgraMiddle4PixelData, + ArrayList bgraMaxPixelData, List newHsvValues) { double hMin = minHue; diff --git a/src/Avalonia.Controls.ColorPicker/Converters/ThirdComponentConverter.cs b/src/Avalonia.Controls.ColorPicker/Converters/ThirdComponentConverter.cs deleted file mode 100644 index 11e33c74f0..0000000000 --- a/src/Avalonia.Controls.ColorPicker/Converters/ThirdComponentConverter.cs +++ /dev/null @@ -1,53 +0,0 @@ -using System; -using System.Globalization; -using Avalonia.Data.Converters; - -namespace Avalonia.Controls.Primitives.Converters -{ - /// - /// Gets the third corresponding with a given - /// that represents the other two components. - /// - /// - /// This is a highly-specialized converter for the color picker. - /// - public class ThirdComponentConverter : IValueConverter - { - /// - public object? Convert( - object? value, - Type targetType, - object? parameter, - CultureInfo culture) - { - if (value is ColorSpectrumComponents components) - { - // Note: Alpha is not relevant here - switch (components) - { - case ColorSpectrumComponents.HueSaturation: - case ColorSpectrumComponents.SaturationHue: - return (ColorComponent)HsvComponent.Value; - case ColorSpectrumComponents.HueValue: - case ColorSpectrumComponents.ValueHue: - return (ColorComponent)HsvComponent.Saturation; - case ColorSpectrumComponents.SaturationValue: - case ColorSpectrumComponents.ValueSaturation: - return (ColorComponent)HsvComponent.Hue; - } - } - - return AvaloniaProperty.UnsetValue; - } - - /// - public object? ConvertBack( - object? value, - Type targetType, - object? parameter, - CultureInfo culture) - { - return AvaloniaProperty.UnsetValue; - } - } -} diff --git a/src/Avalonia.Controls.ColorPicker/Helpers/ArrayList.cs b/src/Avalonia.Controls.ColorPicker/Helpers/ArrayList.cs new file mode 100644 index 0000000000..0b4c2f8579 --- /dev/null +++ b/src/Avalonia.Controls.ColorPicker/Helpers/ArrayList.cs @@ -0,0 +1,71 @@ +namespace Avalonia.Controls.Primitives +{ + /// + /// A thin wrapper over an that allows some additional list-like functionality. + /// + /// + /// This is only for internal ColorPicker-related functionality and should not be used elsewhere. + /// It is added for performance to enjoy the simplicity of the IList.Add() method without requiring + /// an additional copy to turn a list into an array for bitmaps. + /// + /// The type of items in the array. + internal class ArrayList + { + private int _nextIndex = 0; + + /// + /// Initializes a new instance of the class. + /// + public ArrayList(int capacity) + { + Capacity = capacity; + Array = new T[capacity]; + } + + /// + /// Provides access to the underlying array by index. + /// This exists for simplification and the property + /// may also be used. + /// + /// The index of the item to get or set. + /// The item at the given index. + public T this[int i] + { + get => Array[i]; + set => Array[i] = value; + } + + /// + /// Gets the underlying array. + /// + public T[] Array { get; private set; } + + /// + /// Gets the fixed capacity/size of the array. + /// This must be set during construction. + /// + public int Capacity { get; private set; } + + /// + /// Adds the given item to the array at the next available index. + /// WARNING: This must be used carefully and only once, in sequence. + /// + /// The item to add. + public void Add(T item) + { + if (_nextIndex >= 0 && + _nextIndex < Capacity) + { + Array[_nextIndex] = item; + _nextIndex++; + } + else + { + // If necessary an exception could be thrown here + // throw new IndexOutOfRangeException(); + } + + return; + } + } +} diff --git a/src/Avalonia.Controls.ColorPicker/Helpers/ColorPickerHelpers.cs b/src/Avalonia.Controls.ColorPicker/Helpers/ColorPickerHelpers.cs index 381bc42aaa..819d745772 100644 --- a/src/Avalonia.Controls.ColorPicker/Helpers/ColorPickerHelpers.cs +++ b/src/Avalonia.Controls.ColorPicker/Helpers/ColorPickerHelpers.cs @@ -37,7 +37,7 @@ namespace Avalonia.Controls.Primitives /// during calculation with the HSVA color model. /// This will ensure colors are always discernible regardless of saturation/value. /// A new bitmap representing a gradient of color component values. - public static async Task CreateComponentBitmapAsync( + public static async Task> CreateComponentBitmapAsync( int width, int height, Orientation orientation, @@ -49,14 +49,14 @@ namespace Avalonia.Controls.Primitives { if (width == 0 || height == 0) { - return Array.Empty(); + return new ArrayList(0); } - var bitmap = await Task.Run(() => + var bitmap = await Task.Run>(() => { int pixelDataIndex = 0; double componentStep; - byte[] bgraPixelData; + ArrayList bgraPixelData; Color baseRgbColor = Colors.White; Color rgbColor; int bgraPixelDataHeight; @@ -64,7 +64,7 @@ namespace Avalonia.Controls.Primitives // Allocate the buffer // BGRA formatted color components 1 byte each (4 bytes in a pixel) - bgraPixelData = new byte[width * height * 4]; + bgraPixelData = new ArrayList(width * height * 4); bgraPixelDataHeight = height * 4; bgraPixelDataWidth = width * 4; @@ -604,7 +604,7 @@ namespace Avalonia.Controls.Primitives /// The pixel height of the bitmap. /// A new . public static WriteableBitmap CreateBitmapFromPixelData( - IList bgraPixelData, + ArrayList bgraPixelData, int pixelWidth, int pixelHeight) { @@ -617,13 +617,31 @@ namespace Avalonia.Controls.Primitives PixelFormat.Bgra8888, AlphaFormat.Premul); - // Warning: This is highly questionable using (var frameBuffer = bitmap.Lock()) { - Marshal.Copy(bgraPixelData.ToArray(), 0, frameBuffer.Address, bgraPixelData.Count); + Marshal.Copy(bgraPixelData.Array, 0, frameBuffer.Address, bgraPixelData.Array.Length); } return bitmap; } + + /// + /// Updates the given with new, raw BGRA pre-multiplied alpha pixel data. + /// TODO: THIS METHOD IS CURRENTLY PROVIDED AS REFERENCE BUT CAUSES INTERMITTENT CRASHES IF USED. + /// WARNING: The bitmap's width, height and byte count MUST not have changed and MUST be enforced externally. + /// + /// The existing to update. + /// The bitmap (in raw BGRA pre-multiplied alpha pixels). + public static void UpdateBitmapFromPixelData( + WriteableBitmap bitmap, + ArrayList bgraPixelData) + { + using (var frameBuffer = bitmap.Lock()) + { + Marshal.Copy(bgraPixelData.Array, 0, frameBuffer.Address, bgraPixelData.Array.Length); + } + + return; + } } } diff --git a/src/Avalonia.Controls.ColorPicker/Themes/Fluent/ColorView.xaml b/src/Avalonia.Controls.ColorPicker/Themes/Fluent/ColorView.xaml index 16bc2acdd1..b3c6d1a430 100644 --- a/src/Avalonia.Controls.ColorPicker/Themes/Fluent/ColorView.xaml +++ b/src/Avalonia.Controls.ColorPicker/Themes/Fluent/ColorView.xaml @@ -8,7 +8,6 @@ x:CompileBindings="True"> - @@ -241,23 +240,21 @@ - + - + - @@ -215,23 +214,21 @@ - + - +