open-maui/OpenMaui
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33914bf572f182eb4fc4516e2f207f50131b4ba8
maui-linux/Views/SkiaScrollView.cs
Dave Friedel 1f096c38dc Update with recovered code from VM binaries (Jan 1) 
Recovered from decompiled OpenMaui.Controls.Linux.dll:
- SkiaShell.cs: FlyoutHeader, FlyoutFooter, scroll support (918 -> 1325 lines)
- X11Window.cs: Cursor support (XCreateFontCursor, XDefineCursor)
- All handlers with dark mode support
- All services with latest implementations
- LinuxApplication with theme change handling
2026-01-01 06:22:48 -05:00

900 lines
34 KiB
C#
Raw Blame History

using System;
using Microsoft.Maui.Controls;
using SkiaSharp;
namespace Microsoft.Maui.Platform;
public class SkiaScrollView : SkiaView
{
public static readonly BindableProperty OrientationProperty = BindableProperty.Create("Orientation", typeof(ScrollOrientation), typeof(SkiaScrollView), (object)ScrollOrientation.Both, (BindingMode)2, (ValidateValueDelegate)null, (BindingPropertyChangedDelegate)delegate(BindableObject b, object o, object n)
{
((SkiaScrollView)(object)b).InvalidateMeasure();
}, (BindingPropertyChangingDelegate)null, (CoerceValueDelegate)null, (CreateDefaultValueDelegate)null);
public static readonly BindableProperty HorizontalScrollBarVisibilityProperty = BindableProperty.Create("HorizontalScrollBarVisibility", typeof(ScrollBarVisibility), typeof(SkiaScrollView), (object)ScrollBarVisibility.Auto, (BindingMode)2, (ValidateValueDelegate)null, (BindingPropertyChangedDelegate)delegate(BindableObject b, object o, object n)
{
((SkiaScrollView)(object)b).Invalidate();
}, (BindingPropertyChangingDelegate)null, (CoerceValueDelegate)null, (CreateDefaultValueDelegate)null);
public static readonly BindableProperty VerticalScrollBarVisibilityProperty = BindableProperty.Create("VerticalScrollBarVisibility", typeof(ScrollBarVisibility), typeof(SkiaScrollView), (object)ScrollBarVisibility.Auto, (BindingMode)2, (ValidateValueDelegate)null, (BindingPropertyChangedDelegate)delegate(BindableObject b, object o, object n)
{
((SkiaScrollView)(object)b).Invalidate();
}, (BindingPropertyChangingDelegate)null, (CoerceValueDelegate)null, (CreateDefaultValueDelegate)null);
public static readonly BindableProperty ScrollBarColorProperty = BindableProperty.Create("ScrollBarColor", typeof(SKColor), typeof(SkiaScrollView), (object)new SKColor((byte)128, (byte)128, (byte)128, (byte)128), (BindingMode)2, (ValidateValueDelegate)null, (BindingPropertyChangedDelegate)delegate(BindableObject b, object o, object n)
{
((SkiaScrollView)(object)b).Invalidate();
}, (BindingPropertyChangingDelegate)null, (CoerceValueDelegate)null, (CreateDefaultValueDelegate)null);
public static readonly BindableProperty ScrollBarWidthProperty = BindableProperty.Create("ScrollBarWidth", typeof(float), typeof(SkiaScrollView), (object)8f, (BindingMode)2, (ValidateValueDelegate)null, (BindingPropertyChangedDelegate)delegate(BindableObject b, object o, object n)
{
((SkiaScrollView)(object)b).Invalidate();
}, (BindingPropertyChangingDelegate)null, (CoerceValueDelegate)null, (CreateDefaultValueDelegate)null);
private SkiaView? _content;
private float _scrollX;
private float _scrollY;
private float _velocityX;
private float _velocityY;
private bool _isDragging;
private bool _isDraggingVerticalScrollbar;
private bool _isDraggingHorizontalScrollbar;
private float _scrollbarDragStartY;
private float _scrollbarDragStartScrollY;
private float _scrollbarDragStartX;
private float _scrollbarDragStartScrollX;
private float _scrollbarDragAvailableTrack;
private float _scrollbarDragScrollableExtent;
private float _lastPointerX;
private float _lastPointerY;
public ScrollOrientation Orientation
{
get
{
return (ScrollOrientation)((BindableObject)this).GetValue(OrientationProperty);
}
set
{
((BindableObject)this).SetValue(OrientationProperty, (object)value);
}
}
public ScrollBarVisibility HorizontalScrollBarVisibility
{
get
{
return (ScrollBarVisibility)((BindableObject)this).GetValue(HorizontalScrollBarVisibilityProperty);
}
set
{
((BindableObject)this).SetValue(HorizontalScrollBarVisibilityProperty, (object)value);
}
}
public ScrollBarVisibility VerticalScrollBarVisibility
{
get
{
return (ScrollBarVisibility)((BindableObject)this).GetValue(VerticalScrollBarVisibilityProperty);
}
set
{
((BindableObject)this).SetValue(VerticalScrollBarVisibilityProperty, (object)value);
}
}
public SKColor ScrollBarColor
{
get
{
//IL_000b: Unknown result type (might be due to invalid IL or missing references)
return (SKColor)((BindableObject)this).GetValue(ScrollBarColorProperty);
}
set
{
//IL_0006: Unknown result type (might be due to invalid IL or missing references)
((BindableObject)this).SetValue(ScrollBarColorProperty, (object)value);
}
}
public float ScrollBarWidth
{
get
{
return (float)((BindableObject)this).GetValue(ScrollBarWidthProperty);
}
set
{
((BindableObject)this).SetValue(ScrollBarWidthProperty, (object)value);
}
}
public SkiaView? Content
{
get
{
return _content;
}
set
{
if (_content == value)
{
return;
}
if (_content != null)
{
_content.Parent = null;
}
_content = value;
if (_content != null)
{
_content.Parent = this;
if (((BindableObject)this).BindingContext != null)
{
BindableObject.SetInheritedBindingContext((BindableObject)(object)_content, ((BindableObject)this).BindingContext);
}
}
InvalidateMeasure();
Invalidate();
}
}
public float ScrollX
{
get
{
return _scrollX;
}
set
{
float num = ClampScrollX(value);
if (_scrollX != num)
{
_scrollX = num;
this.Scrolled?.Invoke(this, new ScrolledEventArgs(_scrollX, _scrollY));
Invalidate();
}
}
}
public float ScrollY
{
get
{
return _scrollY;
}
set
{
float num = ClampScrollY(value);
if (_scrollY != num)
{
_scrollY = num;
this.Scrolled?.Invoke(this, new ScrolledEventArgs(_scrollX, _scrollY));
Invalidate();
}
}
}
public float ScrollableWidth
{
get
{
//IL_0001: Unknown result type (might be due to invalid IL or missing references)
//IL_0006: Unknown result type (might be due to invalid IL or missing references)
//IL_0016: Unknown result type (might be due to invalid IL or missing references)
//IL_001b: Unknown result type (might be due to invalid IL or missing references)
//IL_005b: Unknown result type (might be due to invalid IL or missing references)
//IL_0060: Unknown result type (might be due to invalid IL or missing references)
//IL_002b: Unknown result type (might be due to invalid IL or missing references)
//IL_0030: Unknown result type (might be due to invalid IL or missing references)
//IL_0040: Unknown result type (might be due to invalid IL or missing references)
//IL_0045: Unknown result type (might be due to invalid IL or missing references)
SKRect bounds = base.Bounds;
float num;
if (!float.IsInfinity(((SKRect)(ref bounds)).Width))
{
bounds = base.Bounds;
if (!float.IsNaN(((SKRect)(ref bounds)).Width))
{
bounds = base.Bounds;
if (!(((SKRect)(ref bounds)).Width <= 0f))
{
bounds = base.Bounds;
num = ((SKRect)(ref bounds)).Width;
goto IL_0054;
}
}
}
num = 800f;
goto IL_0054;
IL_0054:
float num2 = num;
SKSize contentSize = ContentSize;
return Math.Max(0f, ((SKSize)(ref contentSize)).Width - num2);
}
}
public float ScrollableHeight
{
get
{
//IL_0001: Unknown result type (might be due to invalid IL or missing references)
//IL_0006: Unknown result type (might be due to invalid IL or missing references)
//IL_003e: Unknown result type (might be due to invalid IL or missing references)
//IL_0043: Unknown result type (might be due to invalid IL or missing references)
SKRect bounds = base.Bounds;
float height = ((SKRect)(ref bounds)).Height;
float num = ((float.IsInfinity(height) || float.IsNaN(height) || height <= 0f || height > 10000f) ? 544f : height);
SKSize contentSize = ContentSize;
return Math.Max(0f, ((SKSize)(ref contentSize)).Height - num);
}
}
public SKSize ContentSize { get; private set; }
public event EventHandler<ScrolledEventArgs>? Scrolled;
protected override void OnBindingContextChanged()
{
base.OnBindingContextChanged();
if (_content != null)
{
BindableObject.SetInheritedBindingContext((BindableObject)(object)_content, ((BindableObject)this).BindingContext);
}
}
protected override void OnDraw(SKCanvas canvas, SKRect bounds)
{
//IL_0008: Unknown result type (might be due to invalid IL or missing references)
//IL_012d: Unknown result type (might be due to invalid IL or missing references)
//IL_0052: Unknown result type (might be due to invalid IL or missing references)
//IL_0053: Unknown result type (might be due to invalid IL or missing references)
//IL_0063: Unknown result type (might be due to invalid IL or missing references)
//IL_0068: Unknown result type (might be due to invalid IL or missing references)
//IL_009f: Unknown result type (might be due to invalid IL or missing references)
//IL_00a4: Unknown result type (might be due to invalid IL or missing references)
//IL_00d0: Unknown result type (might be due to invalid IL or missing references)
//IL_00d5: Unknown result type (might be due to invalid IL or missing references)
//IL_00f8: Unknown result type (might be due to invalid IL or missing references)
canvas.Save();
canvas.ClipRect(bounds, (SKClipOperation)1, false);
if (_content != null)
{
float num = ((SKRect)(ref bounds)).Width;
if (Orientation != ScrollOrientation.Horizontal && VerticalScrollBarVisibility != ScrollBarVisibility.Never)
{
num -= ScrollBarWidth;
}
SKSize availableSize = default(SKSize);
((SKSize)(ref availableSize))._002Ector(num, float.PositiveInfinity);
ContentSize = _content.Measure(availableSize);
Thickness margin = _content.Margin;
float num2 = ((SKRect)(ref bounds)).Left + (float)((Thickness)(ref margin)).Left;
float num3 = ((SKRect)(ref bounds)).Top + (float)((Thickness)(ref margin)).Top;
float left = ((SKRect)(ref bounds)).Left;
float width = ((SKRect)(ref bounds)).Width;
SKSize desiredSize = _content.DesiredSize;
float num4 = left + Math.Max(width, ((SKSize)(ref desiredSize)).Width) - (float)((Thickness)(ref margin)).Right;
float top = ((SKRect)(ref bounds)).Top;
float height = ((SKRect)(ref bounds)).Height;
desiredSize = _content.DesiredSize;
SKRect bounds2 = default(SKRect);
((SKRect)(ref bounds2))._002Ector(num2, num3, num4, top + Math.Max(height, ((SKSize)(ref desiredSize)).Height) - (float)((Thickness)(ref margin)).Bottom);
_content.Arrange(bounds2);
canvas.Save();
canvas.Translate(0f - _scrollX, 0f - _scrollY);
_content.Draw(canvas);
canvas.Restore();
}
DrawScrollbars(canvas, bounds);
canvas.Restore();
}
private void DrawScrollbars(SKCanvas canvas, SKRect bounds)
{
//IL_0020: Unknown result type (might be due to invalid IL or missing references)
//IL_0039: Unknown result type (might be due to invalid IL or missing references)
bool flag = ShouldShowVerticalScrollbar();
bool flag2 = ShouldShowHorizontalScrollbar();
if (flag && ScrollableHeight > 0f)
{
DrawVerticalScrollbar(canvas, bounds, flag2);
}
if (flag2 && ScrollableWidth > 0f)
{
DrawHorizontalScrollbar(canvas, bounds, flag);
}
}
private bool ShouldShowVerticalScrollbar()
{
if (Orientation == ScrollOrientation.Horizontal)
{
return false;
}
return VerticalScrollBarVisibility switch
{
ScrollBarVisibility.Always => true,
ScrollBarVisibility.Never => false,
_ => ScrollableHeight > 0f,
};
}
private bool ShouldShowHorizontalScrollbar()
{
if (Orientation == ScrollOrientation.Vertical)
{
return false;
}
return HorizontalScrollBarVisibility switch
{
ScrollBarVisibility.Always => true,
ScrollBarVisibility.Never => false,
_ => ScrollableWidth > 0f,
};
}
private void DrawVerticalScrollbar(SKCanvas canvas, SKRect bounds, bool hasHorizontal)
{
//IL_0026: Unknown result type (might be due to invalid IL or missing references)
//IL_002b: Unknown result type (might be due to invalid IL or missing references)
//IL_004f: Unknown result type (might be due to invalid IL or missing references)
//IL_0054: Unknown result type (might be due to invalid IL or missing references)
//IL_0056: Unknown result type (might be due to invalid IL or missing references)
//IL_0060: Unknown result type (might be due to invalid IL or missing references)
//IL_0068: Expected O, but got Unknown
//IL_0091: Unknown result type (might be due to invalid IL or missing references)
//IL_00a2: Unknown result type (might be due to invalid IL or missing references)
//IL_00a9: Expected O, but got Unknown
float num = ((SKRect)(ref bounds)).Height - (hasHorizontal ? ScrollBarWidth : 0f);
float height = ((SKRect)(ref bounds)).Height;
SKSize contentSize = ContentSize;
float num2 = Math.Max(20f, height / ((SKSize)(ref contentSize)).Height * num);
float num3 = ScrollY / ScrollableHeight * (num - num2);
SKPaint val = new SKPaint
{
Color = ScrollBarColor,
IsAntialias = true
};
try
{
SKRoundRect val2 = new SKRoundRect(new SKRect(((SKRect)(ref bounds)).Right - ScrollBarWidth, ((SKRect)(ref bounds)).Top + num3, ((SKRect)(ref bounds)).Right, ((SKRect)(ref bounds)).Top + num3 + num2), ScrollBarWidth / 2f);
canvas.DrawRoundRect(val2, val);
}
finally
{
((IDisposable)val)?.Dispose();
}
}
private void DrawHorizontalScrollbar(SKCanvas canvas, SKRect bounds, bool hasVertical)
{
//IL_0026: Unknown result type (might be due to invalid IL or missing references)
//IL_002b: Unknown result type (might be due to invalid IL or missing references)
//IL_004f: Unknown result type (might be due to invalid IL or missing references)
//IL_0054: Unknown result type (might be due to invalid IL or missing references)
//IL_0056: Unknown result type (might be due to invalid IL or missing references)
//IL_0060: Unknown result type (might be due to invalid IL or missing references)
//IL_0068: Expected O, but got Unknown
//IL_0091: Unknown result type (might be due to invalid IL or missing references)
//IL_00a2: Unknown result type (might be due to invalid IL or missing references)
//IL_00a9: Expected O, but got Unknown
float num = ((SKRect)(ref bounds)).Width - (hasVertical ? ScrollBarWidth : 0f);
float width = ((SKRect)(ref bounds)).Width;
SKSize contentSize = ContentSize;
float num2 = Math.Max(20f, width / ((SKSize)(ref contentSize)).Width * num);
float num3 = ScrollX / ScrollableWidth * (num - num2);
SKPaint val = new SKPaint
{
Color = ScrollBarColor,
IsAntialias = true
};
try
{
SKRoundRect val2 = new SKRoundRect(new SKRect(((SKRect)(ref bounds)).Left + num3, ((SKRect)(ref bounds)).Bottom - ScrollBarWidth, ((SKRect)(ref bounds)).Left + num3 + num2, ((SKRect)(ref bounds)).Bottom), ScrollBarWidth / 2f);
canvas.DrawRoundRect(val2, val);
}
finally
{
((IDisposable)val)?.Dispose();
}
}
public override void OnScroll(ScrollEventArgs e)
{
float num = 40f;
bool flag = false;
if (Orientation != ScrollOrientation.Horizontal && ScrollableHeight > 0f)
{
float scrollY = _scrollY;
ScrollY += e.DeltaY * num;
if (_scrollY != scrollY)
{
flag = true;
}
}
if (Orientation != ScrollOrientation.Vertical && ScrollableWidth > 0f)
{
float scrollX = _scrollX;
ScrollX += e.DeltaX * num;
if (_scrollX != scrollX)
{
flag = true;
}
}
if (flag)
{
e.Handled = true;
}
}
public override void OnPointerPressed(PointerEventArgs e)
{
//IL_001c: Unknown result type (might be due to invalid IL or missing references)
//IL_0021: Unknown result type (might be due to invalid IL or missing references)
//IL_00df: Unknown result type (might be due to invalid IL or missing references)
//IL_00e4: Unknown result type (might be due to invalid IL or missing references)
//IL_0061: Unknown result type (might be due to invalid IL or missing references)
//IL_0066: Unknown result type (might be due to invalid IL or missing references)
//IL_0126: Unknown result type (might be due to invalid IL or missing references)
//IL_012b: Unknown result type (might be due to invalid IL or missing references)
//IL_0087: Unknown result type (might be due to invalid IL or missing references)
//IL_008c: Unknown result type (might be due to invalid IL or missing references)
//IL_0096: Unknown result type (might be due to invalid IL or missing references)
//IL_009b: Unknown result type (might be due to invalid IL or missing references)
//IL_014e: Unknown result type (might be due to invalid IL or missing references)
//IL_0153: Unknown result type (might be due to invalid IL or missing references)
//IL_015d: Unknown result type (might be due to invalid IL or missing references)
//IL_0162: Unknown result type (might be due to invalid IL or missing references)
SKRect bounds;
SKSize contentSize;
if (ShouldShowVerticalScrollbar() && ScrollableHeight > 0f)
{
SKRect verticalScrollbarThumbBounds = GetVerticalScrollbarThumbBounds();
if (((SKRect)(ref verticalScrollbarThumbBounds)).Contains(e.X, e.Y))
{
_isDraggingVerticalScrollbar = true;
_scrollbarDragStartY = e.Y;
_scrollbarDragStartScrollY = _scrollY;
bool flag = ShouldShowHorizontalScrollbar();
bounds = base.Bounds;
float num = ((SKRect)(ref bounds)).Height - (flag ? ScrollBarWidth : 0f);
bounds = base.Bounds;
float height = ((SKRect)(ref bounds)).Height;
contentSize = ContentSize;
float num2 = Math.Max(20f, height / ((SKSize)(ref contentSize)).Height * num);
_scrollbarDragAvailableTrack = num - num2;
_scrollbarDragScrollableExtent = ScrollableHeight;
return;
}
}
if (ShouldShowHorizontalScrollbar() && ScrollableWidth > 0f)
{
SKRect horizontalScrollbarThumbBounds = GetHorizontalScrollbarThumbBounds();
if (((SKRect)(ref horizontalScrollbarThumbBounds)).Contains(e.X, e.Y))
{
_isDraggingHorizontalScrollbar = true;
_scrollbarDragStartX = e.X;
_scrollbarDragStartScrollX = _scrollX;
bool flag2 = ShouldShowVerticalScrollbar();
bounds = base.Bounds;
float num3 = ((SKRect)(ref bounds)).Width - (flag2 ? ScrollBarWidth : 0f);
bounds = base.Bounds;
float width = ((SKRect)(ref bounds)).Width;
contentSize = ContentSize;
float num4 = Math.Max(20f, width / ((SKSize)(ref contentSize)).Width * num3);
_scrollbarDragAvailableTrack = num3 - num4;
_scrollbarDragScrollableExtent = ScrollableWidth;
return;
}
}
if (_content != null)
{
PointerEventArgs e2 = new PointerEventArgs(e.X + _scrollX, e.Y + _scrollY, e.Button);
SkiaView skiaView = _content.HitTest(e2.X, e2.Y);
if (skiaView != null && skiaView != _content)
{
skiaView.OnPointerPressed(e2);
return;
}
}
_isDragging = true;
_lastPointerX = e.X;
_lastPointerY = e.Y;
_velocityX = 0f;
_velocityY = 0f;
}
public override void OnPointerMoved(PointerEventArgs e)
{
if (_isDraggingVerticalScrollbar)
{
if (_scrollbarDragAvailableTrack > 0f)
{
float num = (e.Y - _scrollbarDragStartY) / _scrollbarDragAvailableTrack * _scrollbarDragScrollableExtent;
ScrollY = _scrollbarDragStartScrollY + num;
}
}
else if (_isDraggingHorizontalScrollbar)
{
if (_scrollbarDragAvailableTrack > 0f)
{
float num2 = (e.X - _scrollbarDragStartX) / _scrollbarDragAvailableTrack * _scrollbarDragScrollableExtent;
ScrollX = _scrollbarDragStartScrollX + num2;
}
}
else if (_isDragging)
{
float num3 = _lastPointerX - e.X;
float num4 = _lastPointerY - e.Y;
_velocityX = num3;
_velocityY = num4;
if (Orientation != ScrollOrientation.Horizontal)
{
ScrollY += num4;
}
if (Orientation != ScrollOrientation.Vertical)
{
ScrollX += num3;
}
_lastPointerX = e.X;
_lastPointerY = e.Y;
}
}
public override void OnPointerReleased(PointerEventArgs e)
{
_isDragging = false;
_isDraggingVerticalScrollbar = false;
_isDraggingHorizontalScrollbar = false;
}
private SKRect GetVerticalScrollbarThumbBounds()
{
//IL_0008: Unknown result type (might be due to invalid IL or missing references)
//IL_000d: Unknown result type (might be due to invalid IL or missing references)
//IL_002e: Unknown result type (might be due to invalid IL or missing references)
//IL_0033: Unknown result type (might be due to invalid IL or missing references)
//IL_003d: Unknown result type (might be due to invalid IL or missing references)
//IL_0042: Unknown result type (might be due to invalid IL or missing references)
//IL_007b: Unknown result type (might be due to invalid IL or missing references)
//IL_0080: Unknown result type (might be due to invalid IL or missing references)
//IL_0091: Unknown result type (might be due to invalid IL or missing references)
//IL_0096: Unknown result type (might be due to invalid IL or missing references)
//IL_00a2: Unknown result type (might be due to invalid IL or missing references)
//IL_00a7: Unknown result type (might be due to invalid IL or missing references)
//IL_00b1: Unknown result type (might be due to invalid IL or missing references)
//IL_00b6: Unknown result type (might be due to invalid IL or missing references)
//IL_00c3: Unknown result type (might be due to invalid IL or missing references)
bool flag = ShouldShowHorizontalScrollbar();
SKRect bounds = base.Bounds;
float num = ((SKRect)(ref bounds)).Height - (flag ? ScrollBarWidth : 0f);
bounds = base.Bounds;
float height = ((SKRect)(ref bounds)).Height;
SKSize contentSize = ContentSize;
float num2 = Math.Max(20f, height / ((SKSize)(ref contentSize)).Height * num);
float num3 = ((ScrollableHeight > 0f) ? (ScrollY / ScrollableHeight * (num - num2)) : 0f);
bounds = base.Bounds;
float num4 = ((SKRect)(ref bounds)).Right - ScrollBarWidth;
bounds = base.Bounds;
float num5 = ((SKRect)(ref bounds)).Top + num3;
bounds = base.Bounds;
float right = ((SKRect)(ref bounds)).Right;
bounds = base.Bounds;
return new SKRect(num4, num5, right, ((SKRect)(ref bounds)).Top + num3 + num2);
}
private SKRect GetHorizontalScrollbarThumbBounds()
{
//IL_0008: Unknown result type (might be due to invalid IL or missing references)
//IL_000d: Unknown result type (might be due to invalid IL or missing references)
//IL_002e: Unknown result type (might be due to invalid IL or missing references)
//IL_0033: Unknown result type (might be due to invalid IL or missing references)
//IL_003d: Unknown result type (might be due to invalid IL or missing references)
//IL_0042: Unknown result type (might be due to invalid IL or missing references)
//IL_007b: Unknown result type (might be due to invalid IL or missing references)
//IL_0080: Unknown result type (might be due to invalid IL or missing references)
//IL_008c: Unknown result type (might be due to invalid IL or missing references)
//IL_0091: Unknown result type (might be due to invalid IL or missing references)
//IL_00a2: Unknown result type (might be due to invalid IL or missing references)
//IL_00a7: Unknown result type (might be due to invalid IL or missing references)
//IL_00b5: Unknown result type (might be due to invalid IL or missing references)
//IL_00ba: Unknown result type (might be due to invalid IL or missing references)
//IL_00c3: Unknown result type (might be due to invalid IL or missing references)
bool flag = ShouldShowVerticalScrollbar();
SKRect bounds = base.Bounds;
float num = ((SKRect)(ref bounds)).Width - (flag ? ScrollBarWidth : 0f);
bounds = base.Bounds;
float width = ((SKRect)(ref bounds)).Width;
SKSize contentSize = ContentSize;
float num2 = Math.Max(20f, width / ((SKSize)(ref contentSize)).Width * num);
float num3 = ((ScrollableWidth > 0f) ? (ScrollX / ScrollableWidth * (num - num2)) : 0f);
bounds = base.Bounds;
float num4 = ((SKRect)(ref bounds)).Left + num3;
bounds = base.Bounds;
float num5 = ((SKRect)(ref bounds)).Bottom - ScrollBarWidth;
bounds = base.Bounds;
float num6 = ((SKRect)(ref bounds)).Left + num3 + num2;
bounds = base.Bounds;
return new SKRect(num4, num5, num6, ((SKRect)(ref bounds)).Bottom);
}
public override SkiaView? HitTest(float x, float y)
{
//IL_0011: Unknown result type (might be due to invalid IL or missing references)
//IL_0016: Unknown result type (might be due to invalid IL or missing references)
//IL_001b: Unknown result type (might be due to invalid IL or missing references)
//IL_003f: Unknown result type (might be due to invalid IL or missing references)
//IL_0048: Unknown result type (might be due to invalid IL or missing references)
//IL_004d: Unknown result type (might be due to invalid IL or missing references)
//IL_005d: Unknown result type (might be due to invalid IL or missing references)
//IL_0062: Unknown result type (might be due to invalid IL or missing references)
//IL_006b: Unknown result type (might be due to invalid IL or missing references)
//IL_0070: Unknown result type (might be due to invalid IL or missing references)
//IL_0079: Unknown result type (might be due to invalid IL or missing references)
//IL_007e: Unknown result type (might be due to invalid IL or missing references)
//IL_00b0: Unknown result type (might be due to invalid IL or missing references)
//IL_00b5: Unknown result type (might be due to invalid IL or missing references)
//IL_00be: Unknown result type (might be due to invalid IL or missing references)
//IL_00c3: Unknown result type (might be due to invalid IL or missing references)
//IL_00d3: Unknown result type (might be due to invalid IL or missing references)
//IL_00d8: Unknown result type (might be due to invalid IL or missing references)
//IL_00e1: Unknown result type (might be due to invalid IL or missing references)
//IL_00e6: Unknown result type (might be due to invalid IL or missing references)
if (base.IsVisible && base.IsEnabled)
{
SKRect bounds = base.Bounds;
if (((SKRect)(ref bounds)).Contains(new SKPoint(x, y)))
{
if (ShouldShowVerticalScrollbar() && ScrollableHeight > 0f)
{
GetVerticalScrollbarThumbBounds();
bounds = base.Bounds;
float num = ((SKRect)(ref bounds)).Right - ScrollBarWidth;
bounds = base.Bounds;
float top = ((SKRect)(ref bounds)).Top;
bounds = base.Bounds;
float right = ((SKRect)(ref bounds)).Right;
bounds = base.Bounds;
SKRect val = default(SKRect);
((SKRect)(ref val))._002Ector(num, top, right, ((SKRect)(ref bounds)).Bottom);
if (((SKRect)(ref val)).Contains(x, y))
{
return this;
}
}
if (ShouldShowHorizontalScrollbar() && ScrollableWidth > 0f)
{
bounds = base.Bounds;
float left = ((SKRect)(ref bounds)).Left;
bounds = base.Bounds;
float num2 = ((SKRect)(ref bounds)).Bottom - ScrollBarWidth;
bounds = base.Bounds;
float right2 = ((SKRect)(ref bounds)).Right;
bounds = base.Bounds;
SKRect val2 = default(SKRect);
((SKRect)(ref val2))._002Ector(left, num2, right2, ((SKRect)(ref bounds)).Bottom);
if (((SKRect)(ref val2)).Contains(x, y))
{
return this;
}
}
if (_content != null)
{
SkiaView skiaView = _content.HitTest(x + _scrollX, y + _scrollY);
if (skiaView != null)
{
return skiaView;
}
}
return this;
}
}
return null;
}
public void ScrollTo(float x, float y, bool animated = false)
{
ScrollX = x;
ScrollY = y;
}
public void ScrollToView(SkiaView view, bool animated = false)
{
//IL_000a: Unknown result type (might be due to invalid IL or missing references)
//IL_000f: Unknown result type (might be due to invalid IL or missing references)
//IL_0025: Unknown result type (might be due to invalid IL or missing references)
//IL_002a: Unknown result type (might be due to invalid IL or missing references)
//IL_003b: Unknown result type (might be due to invalid IL or missing references)
//IL_0040: Unknown result type (might be due to invalid IL or missing references)
//IL_0051: Unknown result type (might be due to invalid IL or missing references)
//IL_009a: Unknown result type (might be due to invalid IL or missing references)
//IL_009f: Unknown result type (might be due to invalid IL or missing references)
//IL_00dc: Unknown result type (might be due to invalid IL or missing references)
//IL_00e1: Unknown result type (might be due to invalid IL or missing references)
if (_content == null)
{
return;
}
SKRect bounds = view.Bounds;
float scrollX = ScrollX;
float scrollY = ScrollY;
float scrollX2 = ScrollX;
SKRect bounds2 = base.Bounds;
float num = scrollX2 + ((SKRect)(ref bounds2)).Width;
float scrollY2 = ScrollY;
bounds2 = base.Bounds;
SKRect val = default(SKRect);
((SKRect)(ref val))._002Ector(scrollX, scrollY, num, scrollY2 + ((SKRect)(ref bounds2)).Height);
if (!((SKRect)(ref val)).Contains(bounds))
{
float x = ScrollX;
float y = ScrollY;
if (((SKRect)(ref bounds)).Left < ((SKRect)(ref val)).Left)
{
x = ((SKRect)(ref bounds)).Left;
}
else if (((SKRect)(ref bounds)).Right > ((SKRect)(ref val)).Right)
{
float right = ((SKRect)(ref bounds)).Right;
bounds2 = base.Bounds;
x = right - ((SKRect)(ref bounds2)).Width;
}
if (((SKRect)(ref bounds)).Top < ((SKRect)(ref val)).Top)
{
y = ((SKRect)(ref bounds)).Top;
}
else if (((SKRect)(ref bounds)).Bottom > ((SKRect)(ref val)).Bottom)
{
float bottom = ((SKRect)(ref bounds)).Bottom;
bounds2 = base.Bounds;
y = bottom - ((SKRect)(ref bounds2)).Height;
}
ScrollTo(x, y, animated);
}
}
private float ClampScrollX(float value)
{
if (Orientation == ScrollOrientation.Vertical)
{
return 0f;
}
return Math.Clamp(value, 0f, ScrollableWidth);
}
private float ClampScrollY(float value)
{
if (Orientation == ScrollOrientation.Horizontal)
{
return 0f;
}
return Math.Clamp(value, 0f, ScrollableHeight);
}
protected override SKSize MeasureOverride(SKSize availableSize)
{
//IL_0118: Unknown result type (might be due to invalid IL or missing references)
//IL_0148: Unknown result type (might be due to invalid IL or missing references)
//IL_014d: Unknown result type (might be due to invalid IL or missing references)
//IL_0186: Unknown result type (might be due to invalid IL or missing references)
//IL_018b: Unknown result type (might be due to invalid IL or missing references)
//IL_0106: Unknown result type (might be due to invalid IL or missing references)
//IL_010b: Unknown result type (might be due to invalid IL or missing references)
//IL_01a0: Unknown result type (might be due to invalid IL or missing references)
if (_content != null)
{
float num;
float num2;
switch (Orientation)
{
case ScrollOrientation.Horizontal:
num = float.PositiveInfinity;
num2 = (float.IsInfinity(((SKSize)(ref availableSize)).Height) ? 400f : ((SKSize)(ref availableSize)).Height);
break;
case ScrollOrientation.Neither:
num = (float.IsInfinity(((SKSize)(ref availableSize)).Width) ? 400f : ((SKSize)(ref availableSize)).Width);
num2 = (float.IsInfinity(((SKSize)(ref availableSize)).Height) ? 400f : ((SKSize)(ref availableSize)).Height);
break;
case ScrollOrientation.Both:
num = (float.IsInfinity(((SKSize)(ref availableSize)).Width) ? 800f : ((SKSize)(ref availableSize)).Width);
if (VerticalScrollBarVisibility != ScrollBarVisibility.Never)
{
num -= ScrollBarWidth;
}
num2 = float.PositiveInfinity;
break;
default:
num = (float.IsInfinity(((SKSize)(ref availableSize)).Width) ? 800f : ((SKSize)(ref availableSize)).Width);
if (VerticalScrollBarVisibility != ScrollBarVisibility.Never)
{
num -= ScrollBarWidth;
}
num2 = float.PositiveInfinity;
break;
}
ContentSize = _content.Measure(new SKSize(num, num2));
}
else
{
ContentSize = SKSize.Empty;
}
float num3;
SKSize contentSize;
if (!float.IsInfinity(((SKSize)(ref availableSize)).Width) && !float.IsNaN(((SKSize)(ref availableSize)).Width))
{
num3 = ((SKSize)(ref availableSize)).Width;
}
else
{
contentSize = ContentSize;
num3 = Math.Min(((SKSize)(ref contentSize)).Width, 400f);
}
float num4;
if (!float.IsInfinity(((SKSize)(ref availableSize)).Height) && !float.IsNaN(((SKSize)(ref availableSize)).Height))
{
num4 = ((SKSize)(ref availableSize)).Height;
}
else
{
contentSize = ContentSize;
num4 = Math.Min(((SKSize)(ref contentSize)).Height, 400f);
}
float num5 = num4;
return new SKSize(num3, num5);
}
protected override SKRect ArrangeOverride(SKRect bounds)
{
//IL_0000: Unknown result type (might be due to invalid IL or missing references)
//IL_0001: Unknown result type (might be due to invalid IL or missing references)
//IL_0117: Unknown result type (might be due to invalid IL or missing references)
//IL_0086: Unknown result type (might be due to invalid IL or missing references)
//IL_008b: Unknown result type (might be due to invalid IL or missing references)
//IL_00bd: Unknown result type (might be due to invalid IL or missing references)
//IL_00c2: Unknown result type (might be due to invalid IL or missing references)
//IL_00e9: Unknown result type (might be due to invalid IL or missing references)
//IL_00ee: Unknown result type (might be due to invalid IL or missing references)
//IL_0111: Unknown result type (might be due to invalid IL or missing references)
SKRect result = bounds;
if (float.IsInfinity(((SKRect)(ref bounds)).Height) || float.IsNaN(((SKRect)(ref bounds)).Height))
{
Console.WriteLine($"[SkiaScrollView] WARNING: Infinite/NaN height, using default viewport={544f}");
((SKRect)(ref result))._002Ector(((SKRect)(ref bounds)).Left, ((SKRect)(ref bounds)).Top, ((SKRect)(ref bounds)).Right, ((SKRect)(ref bounds)).Top + 544f);
}
if (_content != null)
{
Thickness margin = _content.Margin;
float num = ((SKRect)(ref result)).Left + (float)((Thickness)(ref margin)).Left;
float num2 = ((SKRect)(ref result)).Top + (float)((Thickness)(ref margin)).Top;
float left = ((SKRect)(ref result)).Left;
float width = ((SKRect)(ref result)).Width;
SKSize contentSize = ContentSize;
float num3 = left + Math.Max(width, ((SKSize)(ref contentSize)).Width) - (float)((Thickness)(ref margin)).Right;
float top = ((SKRect)(ref result)).Top;
float height = ((SKRect)(ref result)).Height;
contentSize = ContentSize;
SKRect bounds2 = default(SKRect);
((SKRect)(ref bounds2))._002Ector(num, num2, num3, top + Math.Max(height, ((SKSize)(ref contentSize)).Height) - (float)((Thickness)(ref margin)).Bottom);
_content.Arrange(bounds2);
}
return result;
}
}
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