private void SetLayoutOffset(Vector offset, Size oldRenderSize)
{
if (!this.AreTransformsClean || !DoubleUtil.AreClose(this.RenderSize, oldRenderSize))
{
Transform directionTransform = this.GetFlowDirectionTransform();
Transform transform = this.RenderTransform;
if (transform == Transform.Identity)
transform = (Transform) null;
FrameworkElement.LayoutTransformData layoutTransformData = FrameworkElement.LayoutTransformDataField.GetValue((DependencyObject) this);
TransformGroup transformGroup = (TransformGroup) null;
if (directionTransform != null || transform != null || layoutTransformData != null)
{
transformGroup = new TransformGroup();
transformGroup.CanBeInheritanceContext = false;
transformGroup.Children.CanBeInheritanceContext = false;
if (directionTransform != null)
transformGroup.Children.Add(directionTransform);
if (layoutTransformData != null)
{
transformGroup.Children.Add(layoutTransformData.Transform);
FrameworkElement.MinMax minMax = new FrameworkElement.MinMax(this);
Size renderSize = this.RenderSize;
if (double.IsPositiveInfinity(minMax.maxWidth))
{
double width = renderSize.Width;
}
if (double.IsPositiveInfinity(minMax.maxHeight))
{
double height = renderSize.Height;
}
renderSize.Width = Math.Min(renderSize.Width, minMax.maxWidth);
renderSize.Height = Math.Min(renderSize.Height, minMax.maxHeight);
Rect rect = Rect.Transform(new Rect(renderSize), layoutTransformData.Transform.Value);
transformGroup.Children.Add((Transform) new TranslateTransform(-rect.X, -rect.Y));
}
if (transform != null)
{
Point renderTransformOrigin = this.GetRenderTransformOrigin();
bool flag = renderTransformOrigin.X != 0.0 || renderTransformOrigin.Y != 0.0;
if (flag)
{
TranslateTransform translateTransform = new TranslateTransform(-renderTransformOrigin.X, -renderTransformOrigin.Y);
translateTransform.Freeze();
transformGroup.Children.Add((Transform) translateTransform);
}
transformGroup.Children.Add(transform);
if (flag)
{
TranslateTransform translateTransform = new TranslateTransform(renderTransformOrigin.X, renderTransformOrigin.Y);
translateTransform.Freeze();
transformGroup.Children.Add((Transform) translateTransform);
}
}
}
this.VisualTransform = (Transform) transformGroup;
this.AreTransformsClean = true;
}
Vector visualOffset = this.VisualOffset;
if (DoubleUtil.AreClose(visualOffset.X, offset.X) && DoubleUtil.AreClose(visualOffset.Y, offset.Y))
return;
this.VisualOffset = offset;
}
protected override Geometry GetLayoutClip(Size layoutSlotSize)
{
bool useLayoutRounding = this.UseLayoutRounding;
if (useLayoutRounding && !this.CheckFlagsAnd(VisualFlags.UseLayoutRounding))
this.SetFlags(true, VisualFlags.UseLayoutRounding);
if (!this.NeedsClipBounds && !this.ClipToBounds)
return base.GetLayoutClip(layoutSlotSize);
FrameworkElement.MinMax minMax = new FrameworkElement.MinMax(this);
Size renderSize = this.RenderSize;
double width = double.IsPositiveInfinity(minMax.maxWidth) ? renderSize.Width : minMax.maxWidth;
double height = double.IsPositiveInfinity(minMax.maxHeight) ? renderSize.Height : minMax.maxHeight;
bool flag1 = this.ClipToBounds || (DoubleUtil.LessThan(width, renderSize.Width) || DoubleUtil.LessThan(height, renderSize.Height));
renderSize.Width = Math.Min(renderSize.Width, minMax.maxWidth);
renderSize.Height = Math.Min(renderSize.Height, minMax.maxHeight);
FrameworkElement.LayoutTransformData layoutTransformData = FrameworkElement.LayoutTransformDataField.GetValue((DependencyObject) this);
Rect rect1 = new Rect();
if (layoutTransformData != null)
{
rect1 = Rect.Transform(new Rect(0.0, 0.0, renderSize.Width, renderSize.Height), layoutTransformData.Transform.Value);
renderSize.Width = rect1.Width;
renderSize.Height = rect1.Height;
}
Thickness margin = this.Margin;
double num1 = margin.Left + margin.Right;
double num2 = margin.Top + margin.Bottom;
Size clientSize = new Size(Math.Max(0.0, layoutSlotSize.Width - num1), Math.Max(0.0, layoutSlotSize.Height - num2));
bool flag2 = this.ClipToBounds || DoubleUtil.LessThan(clientSize.Width, renderSize.Width) || DoubleUtil.LessThan(clientSize.Height, renderSize.Height);
Transform directionTransform = this.GetFlowDirectionTransform();
if (flag1 && !flag2)
{
Rect rect2 = new Rect(0.0, 0.0, width, height);
if (useLayoutRounding)
rect2 = UIElement.RoundLayoutRect(rect2, FrameworkElement.DpiScaleX, FrameworkElement.DpiScaleY);
RectangleGeometry rectangleGeometry = new RectangleGeometry(rect2);
if (directionTransform != null)
rectangleGeometry.Transform = directionTransform;
return (Geometry) rectangleGeometry;
}
else
{
if (!flag2)
return (Geometry) null;
Vector alignmentOffset = this.ComputeAlignmentOffset(clientSize, renderSize);
if (layoutTransformData != null)
{
Rect rect2 = new Rect(-alignmentOffset.X + rect1.X, -alignmentOffset.Y + rect1.Y, clientSize.Width, clientSize.Height);
if (useLayoutRounding)
rect2 = UIElement.RoundLayoutRect(rect2, FrameworkElement.DpiScaleX, FrameworkElement.DpiScaleY);
RectangleGeometry rectangleGeometry = new RectangleGeometry(rect2);
Matrix matrix = layoutTransformData.Transform.Value;
if (matrix.HasInverse)
{
matrix.Invert();
rectangleGeometry.Transform = (Transform) new MatrixTransform(matrix);
}
if (flag1)
{
Rect rect3 = new Rect(0.0, 0.0, width, height);
if (useLayoutRounding)
rect3 = UIElement.RoundLayoutRect(rect3, FrameworkElement.DpiScaleX, FrameworkElement.DpiScaleY);
PathGeometry pathGeometry = Geometry.Combine((Geometry) new RectangleGeometry(rect3), (Geometry) rectangleGeometry, GeometryCombineMode.Intersect, (Transform) null);
if (directionTransform != null)
pathGeometry.Transform = directionTransform;
return (Geometry) pathGeometry;
}
else
{
if (directionTransform != null)
{
if (rectangleGeometry.Transform != null)
rectangleGeometry.Transform = (Transform) new MatrixTransform(rectangleGeometry.Transform.Value * directionTransform.Value);
else
rectangleGeometry.Transform = directionTransform;
}
return (Geometry) rectangleGeometry;
}
}
else
{
Rect rect2 = new Rect(-alignmentOffset.X + rect1.X, -alignmentOffset.Y + rect1.Y, clientSize.Width, clientSize.Height);
if (useLayoutRounding)
rect2 = UIElement.RoundLayoutRect(rect2, FrameworkElement.DpiScaleX, FrameworkElement.DpiScaleY);
if (flag1)
{
Rect rect3 = new Rect(0.0, 0.0, width, height);
if (useLayoutRounding)
rect3 = UIElement.RoundLayoutRect(rect3, FrameworkElement.DpiScaleX, FrameworkElement.DpiScaleY);
rect2.Intersect(rect3);
}
RectangleGeometry rectangleGeometry = new RectangleGeometry(rect2);
if (directionTransform != null)
rectangleGeometry.Transform = directionTransform;
return (Geometry) rectangleGeometry;
}
}
}
protected override sealed Size MeasureCore(Size availableSize)
{
bool useLayoutRounding = this.UseLayoutRounding;
if (useLayoutRounding && !this.CheckFlagsAnd(VisualFlags.UseLayoutRounding))
this.SetFlags(true, VisualFlags.UseLayoutRounding);
this.ApplyTemplate();
if (this.BypassLayoutPolicies)
return this.MeasureOverride(availableSize);
Thickness margin = this.Margin;
double num1 = margin.Left + margin.Right;
double num2 = margin.Top + margin.Bottom;
if (useLayoutRounding && this is ScrollContentPresenter)
{
num1 = UIElement.RoundLayoutValue(num1, FrameworkElement.DpiScaleX);
num2 = UIElement.RoundLayoutValue(num2, FrameworkElement.DpiScaleY);
}
Size size1 = new Size(Math.Max(availableSize.Width - num1, 0.0), Math.Max(availableSize.Height - num2, 0.0));
FrameworkElement.MinMax minMax = new FrameworkElement.MinMax(this);
FrameworkElement.LayoutTransformData layoutTransformData = FrameworkElement.LayoutTransformDataField.GetValue((DependencyObject) this);
Transform layoutTransform = this.LayoutTransform;
if (layoutTransform != null && !layoutTransform.IsIdentity)
{
if (layoutTransformData == null)
{
layoutTransformData = new FrameworkElement.LayoutTransformData();
FrameworkElement.LayoutTransformDataField.SetValue((DependencyObject) this, layoutTransformData);
}
layoutTransformData.CreateTransformSnapshot(layoutTransform);
layoutTransformData.UntransformedDS = new Size();
if (useLayoutRounding)
layoutTransformData.TransformedUnroundedDS = new Size();
}
else if (layoutTransformData != null)
{
layoutTransformData = (FrameworkElement.LayoutTransformData) null;
FrameworkElement.LayoutTransformDataField.ClearValue((DependencyObject) this);
}
if (layoutTransformData != null)
size1 = this.FindMaximalAreaLocalSpaceRect(layoutTransformData.Transform, size1);
size1.Width = Math.Max(minMax.minWidth, Math.Min(size1.Width, minMax.maxWidth));
size1.Height = Math.Max(minMax.minHeight, Math.Min(size1.Height, minMax.maxHeight));
if (useLayoutRounding)
size1 = UIElement.RoundLayoutSize(size1, FrameworkElement.DpiScaleX, FrameworkElement.DpiScaleY);
Size size2 = this.MeasureOverride(size1);
size2 = new Size(Math.Max(size2.Width, minMax.minWidth), Math.Max(size2.Height, minMax.minHeight));
Size size3 = size2;
if (layoutTransformData != null)
{
layoutTransformData.UntransformedDS = size3;
Rect rect = Rect.Transform(new Rect(0.0, 0.0, size3.Width, size3.Height), layoutTransformData.Transform.Value);
size3.Width = rect.Width;
size3.Height = rect.Height;
}
bool flag = false;
if (size2.Width > minMax.maxWidth)
{
size2.Width = minMax.maxWidth;
flag = true;
}
if (size2.Height > minMax.maxHeight)
{
size2.Height = minMax.maxHeight;
flag = true;
}
if (layoutTransformData != null)
{
Rect rect = Rect.Transform(new Rect(0.0, 0.0, size2.Width, size2.Height), layoutTransformData.Transform.Value);
size2.Width = rect.Width;
size2.Height = rect.Height;
}
double val2_1 = size2.Width + num1;
double val2_2 = size2.Height + num2;
if (val2_1 > availableSize.Width)
{
val2_1 = availableSize.Width;
flag = true;
}
if (val2_2 > availableSize.Height)
{
val2_2 = availableSize.Height;
flag = true;
}
if (layoutTransformData != null)
layoutTransformData.TransformedUnroundedDS = new Size(Math.Max(0.0, val2_1), Math.Max(0.0, val2_2));
if (useLayoutRounding)
{
val2_1 = UIElement.RoundLayoutValue(val2_1, FrameworkElement.DpiScaleX);
val2_2 = UIElement.RoundLayoutValue(val2_2, FrameworkElement.DpiScaleY);
}
SizeBox sizeBox1 = FrameworkElement.UnclippedDesiredSizeField.GetValue((DependencyObject) this);
if (flag || val2_1 < 0.0 || val2_2 < 0.0)
{
if (sizeBox1 == null)
{
SizeBox sizeBox2 = new SizeBox(size3);
FrameworkElement.UnclippedDesiredSizeField.SetValue((DependencyObject) this, sizeBox2);
}
else
{
sizeBox1.Width = size3.Width;
sizeBox1.Height = size3.Height;
}
}
else if (sizeBox1 != null)
FrameworkElement.UnclippedDesiredSizeField.ClearValue((DependencyObject) this);
return new Size(Math.Max(0.0, val2_1), Math.Max(0.0, val2_2));
}
protected override sealed void ArrangeCore(Rect finalRect)
{
bool useLayoutRounding = this.UseLayoutRounding;
FrameworkElement.LayoutTransformData layoutTransformData = FrameworkElement.LayoutTransformDataField.GetValue((DependencyObject) this);
Size size1 = Size.Empty;
if (useLayoutRounding && !this.CheckFlagsAnd(VisualFlags.UseLayoutRounding))
this.SetFlags(true, VisualFlags.UseLayoutRounding);
if (this.BypassLayoutPolicies)
{
Size renderSize = this.RenderSize;
this.RenderSize = this.ArrangeOverride(finalRect.Size);
this.SetLayoutOffset(new Vector(finalRect.X, finalRect.Y), renderSize);
}
else
{
this.NeedsClipBounds = false;
Size size2 = finalRect.Size;
Thickness margin = this.Margin;
double num1 = margin.Left + margin.Right;
double num2 = margin.Top + margin.Bottom;
size2.Width = Math.Max(0.0, size2.Width - num1);
size2.Height = Math.Max(0.0, size2.Height - num2);
if (useLayoutRounding && layoutTransformData != null)
{
Size size3 = layoutTransformData.TransformedUnroundedDS;
size1 = layoutTransformData.TransformedUnroundedDS;
size1.Width = Math.Max(0.0, size1.Width - num1);
size1.Height = Math.Max(0.0, size1.Height - num2);
}
SizeBox sizeBox = FrameworkElement.UnclippedDesiredSizeField.GetValue((DependencyObject) this);
Size size4;
if (sizeBox == null)
{
size4 = new Size(Math.Max(0.0, this.DesiredSize.Width - num1), Math.Max(0.0, this.DesiredSize.Height - num2));
if (size1 != Size.Empty)
{
size4.Width = Math.Max(size1.Width, size4.Width);
size4.Height = Math.Max(size1.Height, size4.Height);
}
}
else
size4 = new Size(sizeBox.Width, sizeBox.Height);
if (DoubleUtil.LessThan(size2.Width, size4.Width))
{
this.NeedsClipBounds = true;
size2.Width = size4.Width;
}
if (DoubleUtil.LessThan(size2.Height, size4.Height))
{
this.NeedsClipBounds = true;
size2.Height = size4.Height;
}
if (this.HorizontalAlignment != HorizontalAlignment.Stretch)
size2.Width = size4.Width;
if (this.VerticalAlignment != VerticalAlignment.Stretch)
size2.Height = size4.Height;
if (layoutTransformData != null)
{
Size areaLocalSpaceRect = this.FindMaximalAreaLocalSpaceRect(layoutTransformData.Transform, size2);
size2 = areaLocalSpaceRect;
size4 = layoutTransformData.UntransformedDS;
if (!DoubleUtil.IsZero(areaLocalSpaceRect.Width) && !DoubleUtil.IsZero(areaLocalSpaceRect.Height) && (LayoutDoubleUtil.LessThan(areaLocalSpaceRect.Width, size4.Width) || LayoutDoubleUtil.LessThan(areaLocalSpaceRect.Height, size4.Height)))
size2 = size4;
if (DoubleUtil.LessThan(size2.Width, size4.Width))
{
this.NeedsClipBounds = true;
size2.Width = size4.Width;
}
if (DoubleUtil.LessThan(size2.Height, size4.Height))
{
this.NeedsClipBounds = true;
size2.Height = size4.Height;
}
}
FrameworkElement.MinMax minMax = new FrameworkElement.MinMax(this);
double num3 = Math.Max(size4.Width, minMax.maxWidth);
if (DoubleUtil.LessThan(num3, size2.Width))
{
this.NeedsClipBounds = true;
size2.Width = num3;
}
double num4 = Math.Max(size4.Height, minMax.maxHeight);
if (DoubleUtil.LessThan(num4, size2.Height))
{
this.NeedsClipBounds = true;
size2.Height = num4;
}
if (useLayoutRounding)
size2 = UIElement.RoundLayoutSize(size2, FrameworkElement.DpiScaleX, FrameworkElement.DpiScaleY);
Size renderSize = this.RenderSize;
Size size5 = this.ArrangeOverride(size2);
this.RenderSize = size5;
if (useLayoutRounding)
this.RenderSize = UIElement.RoundLayoutSize(this.RenderSize, FrameworkElement.DpiScaleX, FrameworkElement.DpiScaleY);
Size size6 = new Size(Math.Min(size5.Width, minMax.maxWidth), Math.Min(size5.Height, minMax.maxHeight));
if (useLayoutRounding)
size6 = UIElement.RoundLayoutSize(size6, FrameworkElement.DpiScaleX, FrameworkElement.DpiScaleY);
FrameworkElement frameworkElement1 = this;
int num5 = (frameworkElement1.NeedsClipBounds ? 1 : 0) | (DoubleUtil.LessThan(size6.Width, size5.Width) ? 1 : (DoubleUtil.LessThan(size6.Height, size5.Height) ? 1 : 0));
frameworkElement1.NeedsClipBounds = num5 != 0;
if (layoutTransformData != null)
{
Rect rect = Rect.Transform(new Rect(0.0, 0.0, size6.Width, size6.Height), layoutTransformData.Transform.Value);
size6.Width = rect.Width;
size6.Height = rect.Height;
if (useLayoutRounding)
size6 = UIElement.RoundLayoutSize(size6, FrameworkElement.DpiScaleX, FrameworkElement.DpiScaleY);
}
Size size7 = new Size(Math.Max(0.0, finalRect.Width - num1), Math.Max(0.0, finalRect.Height - num2));
if (useLayoutRounding)
size7 = UIElement.RoundLayoutSize(size7, FrameworkElement.DpiScaleX, FrameworkElement.DpiScaleY);
FrameworkElement frameworkElement2 = this;
int num6 = (frameworkElement2.NeedsClipBounds ? 1 : 0) | (DoubleUtil.LessThan(size7.Width, size6.Width) ? 1 : (DoubleUtil.LessThan(size7.Height, size6.Height) ? 1 : 0));
frameworkElement2.NeedsClipBounds = num6 != 0;
Vector alignmentOffset = this.ComputeAlignmentOffset(size7, size6);
alignmentOffset.X += finalRect.X + margin.Left;
alignmentOffset.Y += finalRect.Y + margin.Top;
if (useLayoutRounding)
{
alignmentOffset.X = UIElement.RoundLayoutValue(alignmentOffset.X, FrameworkElement.DpiScaleX);
alignmentOffset.Y = UIElement.RoundLayoutValue(alignmentOffset.Y, FrameworkElement.DpiScaleY);
}
this.SetLayoutOffset(alignmentOffset, renderSize);
}
}