//-------------------------------------------------------------------
//
// Connstructors
//
//----------------------------------------------------------------------
#region Constructors
internal FlowPosition(FixedTextContainer container, FlowNode node, int offset)
{
Debug.Assert(!FlowNode.IsNull(node));
_container = container;
_flowNode = node;
_offset = offset;
}
//-------------------------------------------------------------------
//
// Constructors
//
//----------------------------------------------------------------------
#region Constructors
internal FixedPageStructure(int pageIndex)
{
Debug.Assert(pageIndex >= 0);
_pageIndex = pageIndex;
// Initialize to virtual
_flowStart = new FlowNode(FixedFlowMap.FlowOrderVirtualScopeId, FlowNodeType.Virtual, pageIndex);
_flowEnd = _flowStart;
//
_fixedStart = FixedNode.Create(pageIndex, 1, FixedFlowMap.FixedOrderStartVisual, -1, null);
_fixedEnd = FixedNode.Create(pageIndex, 1, FixedFlowMap.FixedOrderEndVisual, -1, null);
}
//-------------------------------------------------------
// Flow Order Helper Functions
//-------------------------------------------------------
// Insert a flow position before a given flow position
// NOTE: flow fp will be modified
internal void _FlowOrderInsertBefore(FlowNode nextFlow, FlowNode newFlow)
{
newFlow.SetFp(nextFlow.Fp);
_flowOrder.Insert(newFlow.Fp, newFlow);
// update all subsequent fps
for (int i = newFlow.Fp + 1, n = _flowOrder.Count; i < n; i++)
{
_flowOrder[i].IncreaseFp();
}
}
//--------------------------------------------------------------------
//
// Private Methods
//
//---------------------------------------------------------------------
#region Private Methods
// initialize the maps and edge nodes
private void _Init()
{
// mutable boundary flow nodes
_flowStart = new FlowNode(FlowOrderBoundaryScopeId, FlowNodeType.Boundary, null);
_flowEnd = new FlowNode(FlowOrderBoundaryScopeId, FlowNodeType.Boundary, null);
//_fixedOrder = new List<FixedOrderEntry>();
_flowOrder = new List<FlowNode>();
_flowOrder.Add(_flowStart);
_flowStart.SetFp(0);
_flowOrder.Add(_flowEnd);
_flowEnd.SetFp(1);
_mapping = new Hashtable();
}
//-------------------------------------------------------
// Flow Order
//-------------------------------------------------------
// Insert a FlowNode before a given FlowNode
// NOTE: FlowNode's Fp will be modified
internal FlowNode FlowOrderInsertBefore(FlowNode nextFlow, FlowNode newFlow)
{
_FlowOrderInsertBefore(nextFlow, newFlow);
return newFlow;
}
//--------------------------------------------------------------------
//
// Public Properties
//
//---------------------------------------------------------------------
//--------------------------------------------------------------------
//
// Public Events
//
//---------------------------------------------------------------------
//--------------------------------------------------------------------
//
// Internal Methods
//
//---------------------------------------------------------------------
#region Internal Methods
//-------------------------------------------------------
// Mapping
//-------------------------------------------------------
// Replace an existing FlowNode with a new set of FlowNode
// Each has a mapped FixedNode set.
internal void MappingReplace(FlowNode flowOld, List<FlowNode> flowNew)
{
Debug.Assert(flowOld.Type == FlowNodeType.Virtual || flowNew != null);
// Insert a new entry into Flow Order for each new FlowNode
int index = flowOld.Fp;
_flowOrder.RemoveAt(index);
_flowOrder.InsertRange(index, flowNew);
for (int i = index; i < _flowOrder.Count; i++)
{
_flowOrder[i].SetFp(i);
}
}
internal bool IsVirtual(FlowNode flowNode)
{
return (flowNode.Type == FlowNodeType.Virtual);
}
// return FlowNode within this range
internal void GetFlowNodes(FlowPosition pEnd, out FlowNode[] flowNodes, out int offsetStart, out int offsetEnd)
{
Debug.Assert(this._OverlapAwareCompare(pEnd) < 0);
flowNodes = null;
offsetStart = 0;
offsetEnd = 0;
FlowPosition flowScan = GetClingPosition(LogicalDirection.Forward);
offsetStart = flowScan._offset;
ArrayList ar = new ArrayList();
int distance = GetDistance(pEnd);
// keep moving until we hit distance
while (distance > 0)
{
int scan = flowScan._vScan(LogicalDirection.Forward, distance);
distance -= scan;
if (flowScan.IsRun || flowScan.IsObject)
{
ar.Add(flowScan._flowNode);
offsetEnd = flowScan._offset;
}
}
flowNodes = (FlowNode [])ar.ToArray(typeof(FlowNode));
}
internal void GetFlowNode(LogicalDirection direction, out FlowNode flowNode, out int offsetStart)
{
FlowPosition fp = GetClingPosition(direction);
offsetStart = fp._offset;
flowNode = fp._flowNode;
}
//--------------------------------------------------------------------
//
// Public Methods
//
//---------------------------------------------------------------------
#region Public Methods
// force object comparision
public static bool IsNull(FlowNode flow)
{
return (object)flow == null;
}
//-------------------------------------
// Flow Order
//-------------------------------------
internal void SetFlowBoundary(FlowNode flowStart, FlowNode flowEnd)
{
Debug.Assert(flowStart != null && flowStart.Type != FlowNodeType.Virtual);
Debug.Assert(flowEnd != null && flowEnd.Type != FlowNodeType.Virtual);
_flowStart = flowStart;
_flowEnd = flowEnd;
}
// Token: 0x06002D2D RID: 11565 RVA: 0x000CC0C0 File Offset: 0x000CA2C0
internal FlowNode FlowOrderInsertBefore(FlowNode nextFlow, FlowNode newFlow)
{
this._FlowOrderInsertBefore(nextFlow, newFlow);
return(newFlow);
}
//--------------------------------------------------------------------
//
// Public Methods
//
//---------------------------------------------------------------------
#region Public Methods
// force object comparision
public static bool IsNull(FlowNode flow)
{
return((object)flow == null);
}
//--------------------------------------------------------------------
//
// Private Methods
//
//---------------------------------------------------------------------
#region Private Methods
//--------------------------------------------------------------------
// Helper functions that could result in de-virtualization
//---------------------------------------------------------------------
// scan one node forward, return characters/symbols passed
// limit < 0 means scan entire node.
private int _vScan(LogicalDirection dir, int limit)
{
if (limit == 0)
{
return(0);
}
FlowNode flowNode = _flowNode;
int scanned = 0;
if (dir == LogicalDirection.Forward)
{
if (_offset == _NodeLength || flowNode.Type == FlowNodeType.Boundary)
{
// This position is at right side of a FlowNode
flowNode = _xGetNextFlowNode();
if (FlowNode.IsNull(flowNode))
{
return(scanned);
}
_flowNode = flowNode;
scanned = _NodeLength;
}
else
{
scanned = _NodeLength - _offset;
}
_offset = _NodeLength;
if (limit > 0 && scanned > limit)
{
int back = scanned - limit;
scanned = limit;
_offset -= back;
}
}
else
{
Debug.Assert(dir == LogicalDirection.Backward);
if (_offset == 0 || flowNode.Type == FlowNodeType.Boundary)
{
// This position is at left side of a FlowNode
// look for previous run
flowNode = _xGetPreviousFlowNode();
if (FlowNode.IsNull(flowNode))
{
return(scanned);
}
_flowNode = flowNode;
scanned = _NodeLength;
}
else
{
scanned = _offset;
}
_offset = 0;
if (limit > 0 && scanned > limit)
{
int back = scanned - limit;
scanned = limit;
_offset += back;
}
}
return(scanned);
}
internal bool IsVirtual(FlowNode flowNode)
{
return(flowNode.Type == FlowNodeType.Virtual);
}
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;
}
}
}
