chuan/Ursa.Avalonia
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feat: improve demo.

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This commit is contained in:
rabbitism
2024-02-08 19:19:38 +08:00
parent da511c6078
commit 2a08391dc7
4 changed files with 119 additions and 42 deletions
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56
src/Ursa/Controls/SelectionList/SelectionList.cs
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@@ -1,6 +1,8 @@
using System.Runtime.CompilerServices;
using Avalonia;
using Avalonia.Controls;
using Avalonia.Controls.Metadata;
using Avalonia.Controls.Presenters;
using Avalonia.Controls.Primitives;
using Avalonia.Controls.Selection;
using Avalonia.Controls.Templates;
@@ -11,14 +13,23 @@ using Irihi.Avalonia.Shared.Helpers;
namespace Ursa.Controls;
[TemplatePart(PART_Indicator, typeof(Control))]
[TemplatePart(PART_Indicator, typeof(ContentPresenter))]
public class SelectionList: SelectingItemsControl
{
public const string PART_Indicator = "PART_Indicator";
private static readonly FuncTemplate<Panel?> DefaultPanel = new(() => new StackPanel());
private Control? _indicator;
private ImplicitAnimationCollection? _implicitAnimations;
private ContentPresenter? _indicator;
public static readonly StyledProperty<Control?> IndicatorProperty = AvaloniaProperty.Register<SelectionList, Control?>(
nameof(Indicator));
public Control? Indicator
{
get => GetValue(IndicatorProperty);
set => SetValue(IndicatorProperty, value);
}
static SelectionList()
{
@@ -75,25 +86,23 @@ public class SelectionList: SelectingItemsControl
protected override void OnApplyTemplate(TemplateAppliedEventArgs e)
{
base.OnApplyTemplate(e);
_indicator = e.NameScope.Find<Control>(PART_Indicator);
_indicator?.Arrange(new Rect());
_indicator= e.NameScope.Find<ContentPresenter>(PART_Indicator);
EnsureIndicatorAnimation();
}
private void EnsureIndicatorAnimation()
{
if (_indicator is not null)
{
_indicator.Opacity = 0;
SetUpAnimation();
if (ElementComposition.GetElementVisual(_indicator) is { } v)
{
v.ImplicitAnimations = _implicitAnimations;
v.ImplicitAnimations = _implicitAnimations;
}
_indicator.SizeChanged += OnIndicatorSizeChanged;
}
}
private void OnIndicatorSizeChanged(object sender, SizeChangedEventArgs e)
{
}
internal void SelectByIndex(int index)
{
using var operation = Selection.BatchUpdate();
@@ -103,13 +112,16 @@ public class SelectionList: SelectingItemsControl
private void SetUpAnimation()
{
if (_implicitAnimations != null) return;
var compositorVisual = ElementComposition.GetElementVisual(this);
if (compositorVisual is null) return;
var compositor = ElementComposition.GetElementVisual(this)!.Compositor;
var offsetAnimation = compositor.CreateVector3KeyFrameAnimation();
offsetAnimation.Target = "Offset";
offsetAnimation.Target = nameof(CompositionVisual.Offset);
offsetAnimation.InsertExpressionKeyFrame(1.0f, "this.FinalValue");
offsetAnimation.Duration = TimeSpan.FromSeconds(0.3);
var sizeAnimation = compositor.CreateVector2KeyFrameAnimation();
sizeAnimation.Target = "Size";
sizeAnimation.Target = nameof(CompositionVisual.Size);
sizeAnimation.InsertExpressionKeyFrame(1.0f, "this.FinalValue");
sizeAnimation.Duration = TimeSpan.FromSeconds(0.3);
var opacityAnimation = compositor.CreateScalarKeyFrameAnimation();
@@ -118,9 +130,19 @@ public class SelectionList: SelectingItemsControl
opacityAnimation.Duration = TimeSpan.FromSeconds(0.3);
_implicitAnimations = compositor.CreateImplicitAnimationCollection();
_implicitAnimations["Offset"] = offsetAnimation;
_implicitAnimations["Size"] = sizeAnimation;
_implicitAnimations["Opacity"] = opacityAnimation;
_implicitAnimations[nameof(CompositionVisual.Offset)] = offsetAnimation;
_implicitAnimations[nameof(CompositionVisual.Size)] = sizeAnimation;
_implicitAnimations[nameof(CompositionVisual.Opacity)] = opacityAnimation;
}
}
protected override void OnKeyDown(KeyEventArgs e)
{
var hotkeys = Application.Current!.PlatformSettings?.HotkeyConfiguration;
if (e.Key.ToNavigationDirection() is { } direction && direction.IsDirectional())
{
e.Handled |= MoveSelection(direction, WrapSelection);
}
base.OnKeyDown(e);
}
}