chuan/Ursa.Avalonia
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

feat: length calculation.

Browse Source
This commit is contained in:
rabbitism
2024-01-17 16:55:24 +08:00
parent 13e30799a7
commit e619102cfb
1 changed files with 76 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

80
src/Ursa/Controls/RangeSlider/RangeTrack.cs
View File

@@ -10,6 +10,8 @@ namespace Ursa.Controls.RangeSlider;
/// </summary>
public class RangeTrack: Control
{
private double _density;
public static readonly StyledProperty<double> MinimumProperty = AvaloniaProperty.Register<RangeTrack, double>(
nameof(Minimum));
@@ -55,10 +57,10 @@ public class RangeTrack: Control
set => SetValue(OrientationProperty, value);
}
public static readonly StyledProperty<RepeatButton> UpperButtonProperty = AvaloniaProperty.Register<RangeTrack, RepeatButton>(
public static readonly StyledProperty<Button?> UpperButtonProperty = AvaloniaProperty.Register<RangeTrack, Button?>(
nameof(UpperButton));
public RepeatButton UpperButton
public Button? UpperButton
{
get => GetValue(UpperButtonProperty);
set => SetValue(UpperButtonProperty, value);
@@ -111,12 +113,19 @@ public class RangeTrack: Control
static RangeTrack()
{
OrientationProperty.Changed.AddClassHandler<RangeTrack, Orientation>((o, e) => o.OnOrientationChanged(e));
AffectsArrange<RangeTrack>(MinimumProperty, MaximumProperty, LowerValueProperty, UpperValueProperty, OrientationProperty, IsDirectionReversedProperty);
}
private void OnOrientationChanged(AvaloniaPropertyChangedEventArgs<Orientation> args)
{
Orientation o = args.NewValue.Value;
this.PseudoClasses.Set("", true);
}
protected override Size MeasureOverride(Size availableSize)
{
var desiredSize = new Size(0.0, 0.0);
var desiredSize = new Size();
if (LowerThumb is not null && UpperThumb is not null)
{
LowerThumb.Measure(availableSize);
@@ -132,7 +141,70 @@ public class RangeTrack: Control
LowerThumb.DesiredSize.Height + UpperThumb.DesiredSize.Height);
}
}
return desiredSize;
}
protected override Size ArrangeOverride(Size finalSize)
{
var vertical = Orientation == Orientation.Vertical;
double lowerButtonLength, innerButtonLength, upperButtonLength, lowerThumbLength, upperThumbLength;
ComputeSliderLengths(finalSize, vertical, out lowerButtonLength, out innerButtonLength, out upperButtonLength,
out lowerThumbLength, out upperThumbLength);
return base.ArrangeOverride(finalSize);
}
private void ComputeSliderLengths(
Size arrangeSize,
bool isVertical,
out double lowerButtonLength,
out double innerButtonLength,
out double upperButtonLength,
out double lowerThumbLength,
out double upperThumbLength)
{
double min = Minimum;
double max = Maximum;
double all = Math.Max(0, max - min);
double lowerOffset = Math.Min(all, LowerValue - min);
double upperOffset = Math.Min(all, UpperValue - min);
double trackLength;
if (isVertical)
{
trackLength = arrangeSize.Height;
lowerThumbLength = LowerThumb?.DesiredSize.Height ?? 0;
upperThumbLength = UpperThumb?.DesiredSize.Height ?? 0;
}
else
{
trackLength = arrangeSize.Width;
lowerThumbLength = LowerThumb?.DesiredSize.Width ?? 0;
upperThumbLength = UpperThumb?.DesiredSize.Width ?? 0;
}
CoerceLength(ref lowerThumbLength, trackLength);
CoerceLength(ref upperThumbLength, trackLength);
double remainingLength = trackLength -lowerThumbLength - upperThumbLength;
lowerButtonLength = remainingLength * lowerOffset / all;
upperButtonLength = remainingLength * upperOffset / all;
innerButtonLength = remainingLength - lowerButtonLength - upperButtonLength;
_density = all / remainingLength;
}
private static void CoerceLength(ref double componentLength, double trackLength)
{
if (componentLength < 0)
{
componentLength = 0.0;
}
else if (componentLength > trackLength || double.IsNaN(componentLength))
{
componentLength = trackLength;
}
}
}