internal override void ValidateVisual(PTS.FSKUPDATE fskupdInherited)
{
// Floater is always reported as NEW. Override PTS inherited value.
fskupdInherited = PTS.FSKUPDATE.fskupdNew;
// Query subpage details
PTS.FSSUBPAGEDETAILS subpageDetails;
PTS.Validate(PTS.FsQuerySubpageDetails(PtsContext.Context, _paraHandle.Value, out subpageDetails));
// Obtain all mbd info
MbpInfo mbp = MbpInfo.FromElement(Paragraph.Element);
if(ThisFlowDirection != PageFlowDirection)
{
mbp.MirrorBP();
}
Brush backgroundBrush = (Brush)Paragraph.Element.GetValue(TextElement.BackgroundProperty);
Visual.DrawBackgroundAndBorder(backgroundBrush, mbp.BorderBrush, mbp.Border, _rect.FromTextDpi(), IsFirstChunk, IsLastChunk);
ContainerVisual pageContentVisual;
ContainerVisual floatingElementsVisual;
if(_visual.Children.Count != 2)
{
_visual.Children.Clear();
_visual.Children.Add(new ContainerVisual());
_visual.Children.Add(new ContainerVisual());
}
pageContentVisual = (ContainerVisual)_visual.Children[0];
floatingElementsVisual = (ContainerVisual)_visual.Children[1];
// Subpage content may be simple or complex -
// depending of set of features used in the content of the subpage.
// (1) simple subpage (contains only one track)
// (2) complex subpage (contains columns)
if (PTS.ToBoolean(subpageDetails.fSimple))
{
// (1) simple subpage (contains only one track)
PTS.FSKUPDATE fskupd = subpageDetails.u.simple.trackdescr.fsupdinf.fskupd;
if (fskupd == PTS.FSKUPDATE.fskupdInherited)
{
fskupd = fskupdInherited;
}
VisualCollection visualChildren = pageContentVisual.Children;
if (fskupd == PTS.FSKUPDATE.fskupdNew)
{
visualChildren.Clear();
visualChildren.Add(new ContainerVisual());
}
// For complex subpage SectionVisual is added. So, when morphing
// complex subpage to simple one, remove SectionVisual.
else if (visualChildren.Count == 1 && !(visualChildren[0] is ContainerVisual))
{
visualChildren.Clear();
visualChildren.Add(new ContainerVisual());
}
Debug.Assert(visualChildren.Count == 1 && visualChildren[0] is ContainerVisual);
ContainerVisual trackVisual = (ContainerVisual)visualChildren[0];
PtsHelper.UpdateTrackVisuals(PtsContext, trackVisual.Children, fskupdInherited, ref subpageDetails.u.simple.trackdescr);
}
else
{
// (2) complex page (contains columns)
// cBasicColumns == 0, means that subpage content is empty
bool emptySubpage = (subpageDetails.u.complex.cBasicColumns == 0);
if (!emptySubpage)
{
// Retrieve description for each column.
PTS.FSTRACKDESCRIPTION[] arrayColumnDesc;
PtsHelper.TrackListFromSubpage(PtsContext, _paraHandle.Value, ref subpageDetails, out arrayColumnDesc);
emptySubpage = (arrayColumnDesc.Length == 0);
if (!emptySubpage)
{
PTS.FSKUPDATE fskupd = fskupdInherited;
ErrorHandler.Assert(fskupd != PTS.FSKUPDATE.fskupdShifted, ErrorHandler.UpdateShiftedNotValid);
Debug.Assert(fskupd != PTS.FSKUPDATE.fskupdNoChange);
// For complex subpage SectionVisual is added. So, when morphing
// simple subpage to complex one, remove ParagraphVisual.
VisualCollection visualChildren = pageContentVisual.Children;
if (visualChildren.Count == 0)
{
visualChildren.Add(new SectionVisual());
}
else if (!(visualChildren[0] is SectionVisual))
{
visualChildren.Clear();
visualChildren.Add(new SectionVisual());
}
Debug.Assert(visualChildren.Count == 1 && visualChildren[0] is SectionVisual);
SectionVisual sectionVisual = (SectionVisual)visualChildren[0];
// Draw column rules.
ColumnPropertiesGroup columnProperties = new ColumnPropertiesGroup(Paragraph.Element);
sectionVisual.DrawColumnRules(ref arrayColumnDesc, TextDpi.FromTextDpi(subpageDetails.u.complex.fsrc.v), TextDpi.FromTextDpi(subpageDetails.u.complex.fsrc.dv), columnProperties);
visualChildren = sectionVisual.Children;
if (fskupd == PTS.FSKUPDATE.fskupdNew)
{
visualChildren.Clear();
for (int index = 0; index < arrayColumnDesc.Length; index++)
{
visualChildren.Add(new ContainerVisual());
}
}
ErrorHandler.Assert(visualChildren.Count == arrayColumnDesc.Length, ErrorHandler.ColumnVisualCountMismatch);
for (int index = 0; index < arrayColumnDesc.Length; index++)
{
ContainerVisual trackVisual = (ContainerVisual)visualChildren[index];
PtsHelper.UpdateTrackVisuals(PtsContext, trackVisual.Children, fskupdInherited, ref arrayColumnDesc[index]);
}
}
}
if (emptySubpage)
{
// There is no content, remove all existing visuals.
_visual.Children.Clear();
}
}
pageContentVisual.Offset = new PTS.FSVECTOR(ContentRect.u, ContentRect.v).FromTextDpi();
floatingElementsVisual.Offset = new PTS.FSVECTOR(ContentRect.u, ContentRect.v).FromTextDpi();
PTS.FSRECT clipRect = new PTS.FSRECT(_paddingRect.u - _contentRect.u, _paddingRect.v - _contentRect.v, _paddingRect.du, _paddingRect.dv);
PtsHelper.ClipChildrenToRect(_visual, clipRect.FromTextDpi());
PtsHelper.UpdateFloatingElementVisuals(floatingElementsVisual, _pageContextOfThisPage.FloatingElementList);
}
internal override List<Rect> GetRectangles(ContentElement e, int start, int length)
{
List<Rect> rectangles = new List<Rect>();
Debug.Assert(Paragraph.Element as ContentElement != e);
PTS.FSTEXTDETAILS textDetails;
PTS.Validate(PTS.FsQueryTextDetails(PtsContext.Context, _paraHandle.Value, out textDetails));
// There are 3 different types of text paragraphs:
// (a) full with simple lines
// (b) full with composite lines - when figures/floaters are present
// (c) cached - when using ParaChache
if (textDetails.fsktd == PTS.FSKTEXTDETAILS.fsktdFull)
{
// Check figures and floaters
if (textDetails.u.full.cAttachedObjects > 0)
{
PTS.FSATTACHEDOBJECTDESCRIPTION[] arrayAttachedObjectDesc;
PtsHelper.AttachedObjectListFromParagraph(PtsContext, _paraHandle.Value, textDetails.u.full.cAttachedObjects, out arrayAttachedObjectDesc);
for (int index = 0; index < arrayAttachedObjectDesc.Length; index++)
{
PTS.FSATTACHEDOBJECTDESCRIPTION attachedObjectDesc = arrayAttachedObjectDesc[index];
BaseParaClient paraClient = PtsContext.HandleToObject(attachedObjectDesc.pfsparaclient) as BaseParaClient;
PTS.ValidateHandle(paraClient);
if (start < paraClient.Paragraph.ParagraphEndCharacterPosition)
{
rectangles = paraClient.GetRectangles(e, start, length);
Invariant.Assert(rectangles != null);
if (rectangles.Count != 0)
{
break;
}
}
}
}
// If no success with figures and floaters, check in line
if (rectangles.Count == 0 && textDetails.u.full.cLines > 0)
{
if (!PTS.ToBoolean(textDetails.u.full.fLinesComposite))
{
// (a) full with simple lines
rectangles = GetRectanglesInSimpleLines(e, start, length, ref textDetails.u.full);
}
else
{
// (b) full with complex lines
rectangles = GetRectanglesInCompositeLines(e, start, length, ref textDetails.u.full);
}
// Ensure these are specified in page coordinates.
if(rectangles.Count > 0 && ThisFlowDirection != PageFlowDirection)
{
PTS.FSRECT pageRect = _pageContext.PageRect;
for(int index = 0; index < rectangles.Count; index++)
{
PTS.FSRECT rectTransform = new PTS.FSRECT(rectangles[index]);
PTS.Validate(PTS.FsTransformRectangle(PTS.FlowDirectionToFswdir(ThisFlowDirection), ref pageRect, ref rectTransform, PTS.FlowDirectionToFswdir(PageFlowDirection), out rectTransform));
rectangles[index] = rectTransform.FromTextDpi();
}
}
}
}
else
{
// (c) cached - when using ParaChache
Debug.Assert(textDetails.fsktd == PTS.FSKTEXTDETAILS.fsktdCached);
Debug.Assert(false, "Should not get here. ParaCache is not currently used.");
}
Invariant.Assert(rectangles != null);
return rectangles;
}
internal Rect GetRectangleFromTextPosition(ITextPointer position)
{
Rect rect = System.Windows.Rect.Empty;
int cp = Paragraph.StructuralCache.TextContainer.Start.GetOffsetToPosition((TextPointer)position);
int dcp = cp - Paragraph.ParagraphStartCharacterPosition;
int originalDcp = dcp;
if (position.LogicalDirection == LogicalDirection.Backward && dcp > 0)
{
--dcp;
}
// Query paragraph details
PTS.FSTEXTDETAILS textDetails;
PTS.Validate(PTS.FsQueryTextDetails(PtsContext.Context, _paraHandle.Value, out textDetails));
// There are 3 different types of text paragraphs:
// (a) full with simple lines
// (b) full with composite lines - when figures/floaters are present
// (c) cached - when using ParaChache
if (textDetails.fsktd == PTS.FSKTEXTDETAILS.fsktdFull)
{
if (textDetails.u.full.cLines > 0)
{
int vrBaseline = 0;
if (!PTS.ToBoolean(textDetails.u.full.fLinesComposite))
{
// (a) full with simple lines
RectFromDcpSimpleLines(dcp, originalDcp, position.LogicalDirection, position.GetPointerContext(position.LogicalDirection), ref textDetails.u.full, ref rect, ref vrBaseline);
}
else
{
// (b) full with composite lines - when figures/floaters are present
RectFromDcpCompositeLines(dcp, originalDcp, position.LogicalDirection, position.GetPointerContext(position.LogicalDirection), ref textDetails.u.full, ref rect, ref vrBaseline);
}
}
}
else
{
// (c) cached - when using ParaChache
Debug.Assert(textDetails.fsktd == PTS.FSKTEXTDETAILS.fsktdCached);
Debug.Assert(false, "Should not get here. ParaCache is not currently used.");
}
// Mirror back to page flow direction
if(ThisFlowDirection != PageFlowDirection)
{
PTS.FSRECT pageRect = _pageContext.PageRect;
PTS.FSRECT rectTransform = new PTS.FSRECT(rect);
PTS.Validate(PTS.FsTransformRectangle(PTS.FlowDirectionToFswdir(ThisFlowDirection), ref pageRect, ref rectTransform, PTS.FlowDirectionToFswdir(PageFlowDirection), out rectTransform));
rect = rectTransform.FromTextDpi();
}
return rect;
}
private ReadOnlyCollection<LineResult> LineResultsFromCompositeLines(ref PTS.FSTEXTDETAILSFULL textDetails)
{
ErrorHandler.Assert(!PTS.ToBoolean(textDetails.fDropCapPresent), ErrorHandler.NotSupportedDropCap);
// Get list of complex composite lines.
PTS.FSLINEDESCRIPTIONCOMPOSITE [] arrayLineDesc;
PtsHelper.LineListCompositeFromTextPara(PtsContext, _paraHandle.Value, ref textDetails, out arrayLineDesc);
List<LineResult> lines = new List<LineResult>(arrayLineDesc.Length);
// Get lines information
for (int index = 0; index < arrayLineDesc.Length; index++)
{
PTS.FSLINEDESCRIPTIONCOMPOSITE lineDesc = arrayLineDesc[index];
if (lineDesc.cElements == 0) { continue; }
// Get list of line elements.
PTS.FSLINEELEMENT [] arrayLineElement;
PtsHelper.LineElementListFromCompositeLine(PtsContext, ref lineDesc, out arrayLineElement);
for (int elIndex = 0; elIndex < arrayLineElement.Length; elIndex++)
{
PTS.FSLINEELEMENT element = arrayLineElement[elIndex];
// Create line info
Rect lbox = new Rect(TextDpi.FromTextDpi(element.urBBox), TextDpi.FromTextDpi(lineDesc.vrStart),
TextDpi.FromTextDpi(element.durBBox), TextDpi.FromTextDpi(element.dvrAscent + element.dvrDescent));
// Mirror layout box to page flow direction
if(ThisFlowDirection != PageFlowDirection)
{
PTS.FSRECT pageRect = _pageContext.PageRect;
PTS.FSRECT rectTransform = new PTS.FSRECT(lbox);
PTS.Validate(PTS.FsTransformRectangle(PTS.FlowDirectionToFswdir(ThisFlowDirection), ref pageRect, ref rectTransform, PTS.FlowDirectionToFswdir(PageFlowDirection), out rectTransform));
lbox = rectTransform.FromTextDpi();
}
lines.Add(new TextParaLineResult(this, element.dcpFirst, element.dcpLim - element.dcpFirst,
lbox, TextDpi.FromTextDpi(element.dvrAscent)));
}
}
if (lines.Count != 0)
{
// Hide EOP character
TextParaLineResult lastLineResult = (TextParaLineResult)lines[lines.Count - 1];
if (HasEOP && lastLineResult.DcpLast > Paragraph.Cch)
{
ErrorHandler.Assert(lastLineResult.DcpLast - Line.SyntheticCharacterLength == Paragraph.Cch, ErrorHandler.ParagraphCharacterCountMismatch);
lastLineResult.DcpLast -= Line.SyntheticCharacterLength;
}
}
return (lines.Count > 0) ? new ReadOnlyCollection<LineResult>(lines) : null;
}
