/// <summary>
/// Create and return visual node for the line.
/// </summary>
internal ContainerVisual CreateVisual()
{
LineVisual visual = new LineVisual();
// Set up the text source for rendering callback
_host.Context = this;
try
{
// Handle text trimming.
IList<TextSpan<TextRun>> runs = _runs;
System.Windows.Media.TextFormatting.TextLine line = _line;
if (_line.HasOverflowed && TextParagraph.Properties.TextTrimming != TextTrimming.None)
{
line = _line.Collapse(GetCollapsingProps(_wrappingWidth, TextParagraph.Properties));
Invariant.Assert(line.HasCollapsed, "Line has not been collapsed");
runs = line.GetTextRunSpans();
}
// Add visuals for all embedded elements.
if (HasInlineObjects())
{
VisualCollection visualChildren = visual.Children;
// Get flow direction of the paragraph element.
DependencyObject paragraphElement = _paraClient.Paragraph.Element;
FlowDirection paragraphFlowDirection = (FlowDirection)paragraphElement.GetValue(FrameworkElement.FlowDirectionProperty);
// Before text rendering, add all visuals for inline objects.
int dcpRun = _dcp;
// Enumerate through all runs in the current line and connect visuals for all inline objects.
foreach (TextSpan<TextRun> textSpan in runs)
{
TextRun run = (TextRun)textSpan.Value;
if (run is InlineObjectRun)
{
InlineObjectRun inlineObject = (InlineObjectRun)run;
FlowDirection flowDirection;
Rect rect = GetBoundsFromPosition(dcpRun, run.Length, out flowDirection);
Debug.Assert(DoubleUtil.GreaterThanOrClose(rect.Width, 0), "Negative inline object's width.");
// Disconnect visual from its old parent, if necessary.
Visual currentParent = VisualTreeHelper.GetParent(inlineObject.UIElementIsland) as Visual;
if (currentParent != null)
{
ContainerVisual parent = currentParent as ContainerVisual;
Invariant.Assert(parent != null, "Parent should always derives from ContainerVisual.");
parent.Children.Remove(inlineObject.UIElementIsland);
}
if (!line.HasCollapsed || ((rect.Left + inlineObject.UIElementIsland.Root.DesiredSize.Width) < line.Width))
{
// Check parent's FlowDirection to determine if mirroring is needed
if (inlineObject.UIElementIsland.Root is FrameworkElement)
{
DependencyObject parent = ((FrameworkElement)inlineObject.UIElementIsland.Root).Parent;
FlowDirection parentFlowDirection = (FlowDirection)parent.GetValue(FrameworkElement.FlowDirectionProperty);
PtsHelper.UpdateMirroringTransform(paragraphFlowDirection, parentFlowDirection, inlineObject.UIElementIsland, rect.Width);
}
visualChildren.Add(inlineObject.UIElementIsland);
inlineObject.UIElementIsland.Offset = new Vector(rect.Left, rect.Top);
}
}
// Do not use TextRun.Length, because it gives total length of the run.
// So, if the run is broken between lines, it gives incorrect value.
// Use length of the TextSpan instead, which gives the correct length here.
dcpRun += textSpan.Length;
}
}
// Calculate shift in line offset to render trailing spaces or avoid clipping text
double delta = TextDpi.FromTextDpi(CalculateUOffsetShift());
DrawingContext ctx = visual.Open();
line.Draw(ctx, new Point(delta, 0), (_mirror ? InvertAxes.Horizontal : InvertAxes.None));
ctx.Close();
visual.WidthIncludingTrailingWhitespace = line.WidthIncludingTrailingWhitespace - _indent;
}
finally
{
_host.Context = null; // clear the context
}
return visual;
}
// Token: 0x06006868 RID: 26728 RVA: 0x001D6FA4 File Offset: 0x001D51A4
internal ContainerVisual CreateVisual()
{
LineVisual lineVisual = new LineVisual();
this._host.Context = this;
try
{
IList <TextSpan <TextRun> > list = this._runs;
TextLine textLine = this._line;
if (this._line.HasOverflowed && this.TextParagraph.Properties.TextTrimming != TextTrimming.None)
{
textLine = this._line.Collapse(new TextCollapsingProperties[]
{
this.GetCollapsingProps(this._wrappingWidth, this.TextParagraph.Properties)
});
Invariant.Assert(textLine.HasCollapsed, "Line has not been collapsed");
list = textLine.GetTextRunSpans();
}
if (this.HasInlineObjects())
{
VisualCollection children = lineVisual.Children;
DependencyObject element = this._paraClient.Paragraph.Element;
FlowDirection parentFD = (FlowDirection)element.GetValue(FrameworkElement.FlowDirectionProperty);
int num = this._dcp;
foreach (TextSpan <TextRun> textSpan in list)
{
TextRun value = textSpan.Value;
if (value is InlineObjectRun)
{
InlineObjectRun inlineObjectRun = (InlineObjectRun)value;
FlowDirection flowDirection;
Rect boundsFromPosition = this.GetBoundsFromPosition(num, value.Length, out flowDirection);
Visual visual = VisualTreeHelper.GetParent(inlineObjectRun.UIElementIsland) as Visual;
if (visual != null)
{
ContainerVisual containerVisual = visual as ContainerVisual;
Invariant.Assert(containerVisual != null, "Parent should always derives from ContainerVisual.");
containerVisual.Children.Remove(inlineObjectRun.UIElementIsland);
}
if (!textLine.HasCollapsed || boundsFromPosition.Left + inlineObjectRun.UIElementIsland.Root.DesiredSize.Width < textLine.Width)
{
if (inlineObjectRun.UIElementIsland.Root is FrameworkElement)
{
DependencyObject parent = ((FrameworkElement)inlineObjectRun.UIElementIsland.Root).Parent;
FlowDirection childFD = (FlowDirection)parent.GetValue(FrameworkElement.FlowDirectionProperty);
PtsHelper.UpdateMirroringTransform(parentFD, childFD, inlineObjectRun.UIElementIsland, boundsFromPosition.Width);
}
children.Add(inlineObjectRun.UIElementIsland);
inlineObjectRun.UIElementIsland.Offset = new Vector(boundsFromPosition.Left, boundsFromPosition.Top);
}
}
num += textSpan.Length;
}
}
double x = TextDpi.FromTextDpi(this.CalculateUOffsetShift());
DrawingContext drawingContext = lineVisual.Open();
textLine.Draw(drawingContext, new Point(x, 0.0), this._mirror ? InvertAxes.Horizontal : InvertAxes.None);
drawingContext.Close();
lineVisual.WidthIncludingTrailingWhitespace = textLine.WidthIncludingTrailingWhitespace - this._indent;
}
finally
{
this._host.Context = null;
}
return(lineVisual);
}
