internal void RenderFlowNode(DrawingContext dc)
{
FormattedText ft;
FixedNode fixedNode;
FixedSOMElement[] somElements;
String ouptputString;
FixedElement fixedElement;
Random random = new Random();
CultureInfo EnglishCulture = System.Windows.Markup.TypeConverterHelper.InvariantEnglishUS;
FixedPage fp = _fixedTextBuilder.FixedTextContainer.FixedDocument.GetFixedPage(PageIndex);
//
//Iterate through flow node to draw Transparent Rect and draw its index
//
Point prevTextPoint = new Point(0, 0);
DpiScale dpi = fp.GetDpi();
for (int i = FlowStart.Fp; i <= FlowEnd.Fp; i++)
{
FlowNode fn = _fixedTextBuilder.FixedFlowMap[i];
switch (fn.Type)
{
case FlowNodeType.Boundary:
case FlowNodeType.Virtual:
// this two cases won't happen.
Debug.Assert(false);
break;
case FlowNodeType.Start:
case FlowNodeType.End:
{
fixedElement = fn.Cookie as FixedElement;
String typeString = fixedElement.Type.ToString();
int indexofDot = typeString.LastIndexOf('.');
ouptputString = String.Format("{0}-{1}",
fn.ToString(),
typeString.Substring(indexofDot + 1));
ft = new FormattedText(ouptputString,
EnglishCulture,
FlowDirection.LeftToRight,
new Typeface("Courier New"),
8,
Brushes.DarkGreen,
dpi.PixelsPerDip);
// Ideally, for FlowNodeType.Start, this should find next FlowNode with physical location,
// and draw it around the physical location.
prevTextPoint = CreateFromLastTextPoint(prevTextPoint);
dc.DrawText(ft, prevTextPoint);
break;
}
case FlowNodeType.Noop:
ft = new FormattedText(fn.ToString(),
EnglishCulture,
FlowDirection.LeftToRight,
new Typeface("Courier New"),
8,
Brushes.DarkGreen,
dpi.PixelsPerDip);
prevTextPoint = CreateFromLastTextPoint(prevTextPoint);
dc.DrawText(ft, prevTextPoint);
break;
case FlowNodeType.Run:
//
// Paint the region. The rect is the union of child glyphs.
//
Glyphs glyphs;
Rect flowRunBox = Rect.Empty;
Rect glyphBox;
somElements = _fixedTextBuilder.FixedFlowMap.FlowNodes[fn.Fp].FixedSOMElements;
foreach (FixedSOMElement currentSomeElement in somElements)
{
FixedNode currentFixedNode = currentSomeElement.FixedNode;
int startIndex = currentSomeElement.StartIndex;
int endIndex = currentSomeElement.EndIndex;
// same as (_IsBoundaryFixedNode(currentFixedNode))
if (currentFixedNode.Page == FixedFlowMap.FixedOrderStartPage ||
currentFixedNode.Page == FixedFlowMap.FixedOrderEndPage ||
currentFixedNode[1] == FixedFlowMap.FixedOrderStartVisual ||
currentFixedNode[1] == FixedFlowMap.FixedOrderEndVisual)
{
continue;
}
glyphs = fp.GetGlyphsElement(currentFixedNode);
Debug.Assert(glyphs != null);
glyphBox = FixedTextView._GetGlyphRunDesignRect(glyphs, startIndex, endIndex);
if (!glyphBox.IsEmpty)
{
GeneralTransform g = glyphs.TransformToAncestor(fp);
glyphBox = g.TransformBounds(glyphBox);
}
flowRunBox.Union(glyphBox);
}
if (flowRunBox.IsEmpty)
{
Debug.Assert(false);
}
prevTextPoint.X = flowRunBox.Right;
prevTextPoint.Y = flowRunBox.Bottom - random.Next(15);
// Draw something the upper left corner of region.
ft = new FormattedText(fn.ToString() + "-" + Convert.ToString((int)(fn.Cookie)) +
"-" + Convert.ToString(somElements.Length),
EnglishCulture,
FlowDirection.LeftToRight,
new Typeface("Courier New"),
8,
Brushes.DarkBlue,
dpi.PixelsPerDip);
dc.DrawText(ft, prevTextPoint);
Pen pen = new Pen(Brushes.Blue, 2);
flowRunBox.Inflate(random.Next(3), random.Next(3));
DrawRectOutline(dc, pen, flowRunBox);
break;
case FlowNodeType.Object:
//
// Find the mapping fixed node
//
somElements = _fixedTextBuilder.FixedFlowMap.FlowNodes[fn.Fp].FixedSOMElements;
foreach (FixedSOMElement currentSomeElement in somElements)
{
fixedNode = currentSomeElement.FixedNode;
DependencyObject dependencyObject = fp.GetElement(fixedNode);
Image image = dependencyObject as Image;
Path path = dependencyObject as Path;
if (image != null || path != null)
{
Rect imageRect, boundingRect = Rect.Empty;
//
// Get Image bounding box.
//
GeneralTransform transform = ((Visual)dependencyObject).TransformToAncestor(fp);
// You can't use GetContentBounds inside OnRender
if (image != null)
{
boundingRect = new Rect(0, 0, image.Width, image.Height);
}
else
{
boundingRect = path.Data.Bounds;
}
if (!boundingRect.IsEmpty)
{
imageRect = transform.TransformBounds(boundingRect);
// Image might overlap, inflate the box.
imageRect.Inflate(3, 3);
dc.DrawRectangle(Brushes.CadetBlue, null, imageRect);
prevTextPoint.X = imageRect.Right;
prevTextPoint.Y = imageRect.Top;
}
}
else
{
//
// If the object is the Image type(that is not likey).
// Use the last Point to infer a comment area!
//
Debug.Assert(false);
}
fixedElement = fn.Cookie as FixedElement;
ft = new FormattedText(fn.ToString(),
EnglishCulture,
FlowDirection.LeftToRight,
new Typeface("Courier New"),
8,
Brushes.DarkGreen,
dpi.PixelsPerDip);
dc.DrawText(ft, prevTextPoint);
}
break;
default:
Debug.Assert(false);
break;
}
}
}
// If return false, nothing has been modified, which implies out of page boundary
// The input of suggestedX is in the VisualRoot's cooridnate system
private bool _GetNextLineGlyphs(ref FixedPosition fixedp, ref LogicalDirection edge, double suggestedX, LogicalDirection scanDir)
{
int count = 1;
int pageIndex = fixedp.Page;
bool moved = false;
FixedNode[] fixedNodes = Container.FixedTextBuilder.GetNextLine(fixedp.Node, (scanDir == LogicalDirection.Forward), ref count);
if (fixedNodes != null && fixedNodes.Length > 0)
{
FixedPage page = Container.FixedDocument.SyncGetPage(pageIndex, false);
// This line contains multiple Glyhs. Scan backward
// util we hit the first one whose OriginX is smaller
// then suggestedX;
if (Double.IsInfinity(suggestedX))
{
suggestedX = 0;
}
Point topOfPage = new Point(suggestedX, 0);
Point secondPoint = new Point(suggestedX, 1000);
FixedNode hitNode = fixedNodes[0];
Glyphs hitGlyphs = null;
double closestDistance = Double.MaxValue;
double xoffset = 0;
for (int i = fixedNodes.Length - 1; i >= 0; i--)
{
FixedNode node = fixedNodes[i];
Glyphs g = page.GetGlyphsElement(node);
if (g != null)
{
GeneralTransform transform = page.TransformToDescendant(g);
Point pt1 = topOfPage;
Point pt2 = secondPoint;
if (transform != null)
{
transform.TryTransform(pt1, out pt1);
transform.TryTransform(pt2, out pt2);
}
double invSlope = (pt2.X - pt1.X) / (pt2.Y - pt1.Y);
double xoff, distance;
GlyphRun run = g.ToGlyphRun();
Rect box = run.ComputeAlignmentBox();
box.Offset(g.OriginX, g.OriginY);
if (invSlope > 1000 || invSlope < -1000)
{
// special case for vertical text
xoff = 0;
distance = (pt1.Y > box.Y) ? (pt1.Y - box.Bottom) : (box.Y - pt1.Y);
}
else
{
double centerY = (box.Top + box.Bottom) / 2;
xoff = pt1.X + invSlope * (centerY - pt1.Y);
distance = (xoff > box.X) ? (xoff - box.Right) : (box.X - xoff);
}
if (distance < closestDistance)
{
closestDistance = distance;
xoffset = xoff;
hitNode = node;
hitGlyphs = g;
if (distance <= 0)
{
break;
}
}
}
}
Debug.Assert(hitGlyphs != null);
int charIdx;
_GlyphRunHitTest(hitGlyphs, xoffset, out charIdx, out edge);
fixedp = new FixedPosition(hitNode, charIdx);
moved = true;
}
return(moved);
}
// Token: 0x06002EF2 RID: 12018 RVA: 0x000D4194 File Offset: 0x000D2394
private bool _GetNextLineGlyphs(ref FixedPosition fixedp, ref LogicalDirection edge, double suggestedX, LogicalDirection scanDir)
{
int num = 1;
int page = fixedp.Page;
bool result = false;
FixedNode[] nextLine = this.Container.FixedTextBuilder.GetNextLine(fixedp.Node, scanDir == LogicalDirection.Forward, ref num);
if (nextLine != null && nextLine.Length != 0)
{
FixedPage fixedPage = this.Container.FixedDocument.SyncGetPage(page, false);
if (double.IsInfinity(suggestedX))
{
suggestedX = 0.0;
}
Point point = new Point(suggestedX, 0.0);
Point point2 = new Point(suggestedX, 1000.0);
FixedNode fixedNode = nextLine[0];
Glyphs g = null;
double num2 = double.MaxValue;
double xoffset = 0.0;
for (int i = nextLine.Length - 1; i >= 0; i--)
{
FixedNode fixedNode2 = nextLine[i];
Glyphs glyphsElement = fixedPage.GetGlyphsElement(fixedNode2);
if (glyphsElement != null)
{
GeneralTransform generalTransform = fixedPage.TransformToDescendant(glyphsElement);
Point inPoint = point;
Point inPoint2 = point2;
if (generalTransform != null)
{
generalTransform.TryTransform(inPoint, out inPoint);
generalTransform.TryTransform(inPoint2, out inPoint2);
}
double num3 = (inPoint2.X - inPoint.X) / (inPoint2.Y - inPoint.Y);
GlyphRun glyphRun = glyphsElement.ToGlyphRun();
Rect rect = glyphRun.ComputeAlignmentBox();
rect.Offset(glyphsElement.OriginX, glyphsElement.OriginY);
double num4;
double num5;
if (num3 > 1000.0 || num3 < -1000.0)
{
num4 = 0.0;
num5 = ((inPoint.Y > rect.Y) ? (inPoint.Y - rect.Bottom) : (rect.Y - inPoint.Y));
}
else
{
double num6 = (rect.Top + rect.Bottom) / 2.0;
num4 = inPoint.X + num3 * (num6 - inPoint.Y);
num5 = ((num4 > rect.X) ? (num4 - rect.Right) : (rect.X - num4));
}
if (num5 < num2)
{
num2 = num5;
xoffset = num4;
fixedNode = fixedNode2;
g = glyphsElement;
if (num5 <= 0.0)
{
break;
}
}
}
}
int offset;
this._GlyphRunHitTest(g, xoffset, out offset, out edge);
fixedp = new FixedPosition(fixedNode, offset);
result = true;
}
return(result);
}