本文整理汇总了C#中ITextView.GetTightBoundingGeometryFromTextPositions方法的典型用法代码示例。如果您正苦于以下问题：C# ITextView.GetTightBoundingGeometryFromTextPositions方法的具体用法？C# ITextView.GetTightBoundingGeometryFromTextPositions怎么用？C# ITextView.GetTightBoundingGeometryFromTextPositions使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类ITextView的用法示例。
在下文中一共展示了ITextView.GetTightBoundingGeometryFromTextPositions方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: GetPageGeometry
/// <summary>
/// Get a geometry for a particular page and transforms it to the parent page
/// </summary>
/// <param name="segment">the TextSegment for which geometry we are looking</param>
/// <param name="view">the page view</param>
/// <param name="parentView">the parent page view</param>
/// <returns></returns>
private Geometry GetPageGeometry(TextSegment segment, ITextView view, ITextView parentView)
{
Debug.Assert((view != null) && (parentView != null), "null text view");
//in the initial layout update the TextViews might be invalid. This is OK
//since there will be a second pass
if (!view.IsValid || !parentView.IsValid)
return null;
//Debug.Assert((view.RenderScope != null) && (parentView.RenderScope != null), "null text view render scope");
if ((view.RenderScope == null) || (parentView.RenderScope == null))
return null;
Geometry pageGeometry = null;
pageGeometry = view.GetTightBoundingGeometryFromTextPositions(segment.Start, segment.End);
if (pageGeometry != null)
{
if (parentView != null)
{
Transform additionalTransform = (Transform)view.RenderScope.TransformToVisual(parentView.RenderScope);
if (pageGeometry.Transform != null)
{
//we need to create geometry group in this case
TransformGroup group = new TransformGroup();
group.Children.Add(pageGeometry.Transform);
group.Children.Add(additionalTransform);
pageGeometry.Transform = group;
}
else
{
//now set the transformation
pageGeometry.Transform = additionalTransform;
}
}
}
return pageGeometry;
} 示例2: CalculateVisibleRect
/// <summary>
/// Compute visible rectangle.
/// </summary>
private Rect CalculateVisibleRect(ITextView textView, TextElement textElement, TextPointer startPointer, TextPointer endPointer)
{
Geometry geometry = textView.GetTightBoundingGeometryFromTextPositions(startPointer, endPointer);
Rect visibleRect = (geometry != null) ? geometry.Bounds : Rect.Empty;
Visual visual = textView.RenderScope;
while (visual != null && visibleRect != Rect.Empty)
{
if (VisualTreeHelper.GetClip(visual) != null)
{
GeneralTransform transform = textView.RenderScope.TransformToAncestor(visual).Inverse;
// Safer version of transform to descendent (doing the inverse ourself),
// we want the rect inside of our space. (Which is always rectangular and much nicer to work with)
if (transform != null)
{
Rect rectBounds = VisualTreeHelper.GetClip(visual).Bounds;
rectBounds = transform.TransformBounds(rectBounds);
visibleRect.Intersect(rectBounds);
}
else
{
// No visibility if non-invertable transform exists.
return Rect.Empty;
}
}
visual = VisualTreeHelper.GetParent(visual) as Visual;
}
return visibleRect;
}