private PTS.FSRECT GetRect()
{
PTS.FSRECT rect;
// There are 3 cases when calculating page rect:
// (1) PTS page is not created - return empty rect.
// (2) PTS page - use page PTS APIs to get page rectangle.
// (3) PTS subpage - use subpage PTS APIs to get page rectangle.
if (IsEmpty)
{
// (1) PTS page is not created - empty rect.
rect = new PTS.FSRECT();
}
else
{
// (2) PTS page - use page PTS APIs to get page rectangle.
PTS.FSPAGEDETAILS pageDetails;
PTS.Validate(PTS.FsQueryPageDetails(PtsContext.Context, _ptsPage.Value, out pageDetails));
// There are 2 different types of PTS page and calculated rectangle depends on it:
// (a) simple page (contains only one track) - get rectanglefrom the track.
// (b) complex page (contains header, page body, footnotes and footer) - get bounding
// box of each segment and union them.
if (PTS.ToBoolean(pageDetails.fSimple))
{
// (a) simple page (contains only one track) - get rectanglefrom the track.
rect = pageDetails.u.simple.trackdescr.fsrc;
}
else
{
// (b) complex page (contains header, page body, footnotes and footer) - get rectangle
// of each segment and union them.
//ErrorHandler.Assert(!PTS.ToBoolean(pageDetails.u.complex.fTopBottomHeaderFooter) || this.PresenterCache.CurrentPresenter.IsBottomless, ErrorHandler.NotSupportedHeadersFooters);
//ErrorHandler.Assert(!PTS.ToBoolean(pageDetails.u.complex.fJustified) || this.PresenterCache.CurrentPresenter.IsBottomless, ErrorHandler.NotSupportedVerticalJustify);
ErrorHandler.Assert(pageDetails.u.complex.cFootnoteColumns == 0, ErrorHandler.NotSupportedFootnotes);
// Since header/footer and footnotes are not supported yet, use page body rectangle
rect = pageDetails.u.complex.fsrcPageBody;
}
}
return rect;
}
internal override void UpdateViewport(ref PTS.FSRECT viewport)
{
// Query subpage details
PTS.FSSUBPAGEDETAILS subpageDetails;
PTS.Validate(PTS.FsQuerySubpageDetails(PtsContext.Context, _paraHandle.Value, out subpageDetails));
PTS.FSRECT viewportSubpage = new PTS.FSRECT();
viewportSubpage.u = viewport.u - ContentRect.u;
viewportSubpage.v = viewport.v - ContentRect.v;
viewportSubpage.du = viewport.du;
viewportSubpage.dv = viewport.dv;
// 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))
{
PtsHelper.UpdateViewportTrack(PtsContext, ref subpageDetails.u.simple.trackdescr, ref viewportSubpage);
}
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)
{
for (int index = 0; index < arrayColumnDesc.Length; index++)
{
PtsHelper.UpdateViewportTrack(PtsContext, ref arrayColumnDesc[index], ref viewportSubpage);
}
}
}
}
}
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 void GetFigureProperties(
FigureParaClient paraClient, // IN:
int fInTextLine, // IN: it is attached to text line
uint fswdir, // IN: current direction
int fBottomUndefined, // IN: bottom of page is not defined
out int dur, // OUT: width of figure
out int dvr, // OUT: height of figure
out PTS.FSFIGUREPROPS fsfigprops, // OUT: figure attributes
out int cPolygons, // OUT: number of polygons
out int cVertices, // OUT: total number of vertices in all polygons
out int durDistTextLeft, // OUT: distance to text from MinU side
out int durDistTextRight, // OUT: distance to text from MaxU side
out int dvrDistTextTop, // OUT: distance to text from MinV side
out int dvrDistTextBottom) // OUT: distance to text from MaxV side
{
Invariant.Assert(StructuralCache.CurrentFormatContext.FinitePage);
uint fswdirPara = PTS.FlowDirectionToFswdir(((FlowDirection)Element.GetValue(FrameworkElement.FlowDirectionProperty)));
IntPtr pfsFigureContent;
PTS.FSBBOX fsbbox;
int cColumns;
int dvrTopSpace;
PTS.FSCOLUMNINFO[] columnInfoCollection;
IntPtr pmcsclientOut;
MbpInfo mbp;
Figure element = (Figure)Element;
// Initialize the subpage size. PTS subpage margin is always set to 0 for Figures.
// If width on figure is specified, use the specified value.
// Border and padding of the figure is extracted from available subpage width.
// We use StructuralCache.CurrentFormatContext's page dimensions as limiting values for figure MBP
mbp = MbpInfo.FromElement(Element);
// We do not mirror margin as it's used to dist text left and right, and is unnecessary.
durDistTextLeft = durDistTextRight = dvrDistTextTop = dvrDistTextBottom = 0;
// Calculate specified width. IsAuto flag is needed because Auto is formatted the same way as column and will
// not return Double.NaN.
bool isWidthAuto;
double specifiedWidth = FigureHelper.CalculateFigureWidth(StructuralCache, element,
element.Width,
out isWidthAuto);
double anchorLimitedWidth = LimitTotalWidthFromAnchor(specifiedWidth, TextDpi.FromTextDpi(mbp.MarginLeft + mbp.MarginRight));
int subpageWidth = Math.Max(1, TextDpi.ToTextDpi(anchorLimitedWidth) - (mbp.BPLeft + mbp.BPRight));
// Calculate figure height, IsAuto flag is used as specifiedHeight will never be NaN.
bool isHeightAuto;
double specifiedHeight = FigureHelper.CalculateFigureHeight(StructuralCache, element,
element.Height,
out isHeightAuto);
double anchorLimitedHeight = LimitTotalHeightFromAnchor(specifiedHeight, TextDpi.FromTextDpi(mbp.MarginTop + mbp.MarginBottom));
int subpageHeight = Math.Max(1, TextDpi.ToTextDpi(anchorLimitedHeight) - (mbp.BPTop + mbp.BPBottom));
// Initialize column info. Figure always has just 1 column.
cColumns = 1;
columnInfoCollection = new PTS.FSCOLUMNINFO[cColumns];
columnInfoCollection[0].durBefore = 0;
columnInfoCollection[0].durWidth = subpageWidth;
// Create subpage
{
PTS.FSFMTR fsfmtr;
IntPtr brParaOut;
PTS.FSRECT marginRect = new PTS.FSRECT(0, 0, subpageWidth, subpageHeight);
CreateSubpageFiniteHelper(PtsContext, IntPtr.Zero, PTS.False, _mainTextSegment.Handle, IntPtr.Zero, PTS.False, PTS.True,
fswdir, subpageWidth, subpageHeight, ref marginRect,
cColumns, columnInfoCollection, PTS.False,
out fsfmtr, out pfsFigureContent, out brParaOut, out dvr, out fsbbox, out pmcsclientOut,
out dvrTopSpace);
if(brParaOut != IntPtr.Zero)
{
PTS.Validate(PTS.FsDestroySubpageBreakRecord(PtsContext.Context, brParaOut));
}
}
// PTS subpage does not support autosizing, but Figure needs to autosize to its
// content. To workaround this problem, second format of subpage is performed, if
// necessary. It means that if the width of bounding box is smaller than subpage's
// width, second formatting is performed.
if(PTS.ToBoolean(fsbbox.fDefined))
{
if (fsbbox.fsrc.du < subpageWidth && isWidthAuto)
{
// There is a need to reformat PTS subpage, so destroy any resourcces allocated by PTS
// during previous formatting.
if (pfsFigureContent != IntPtr.Zero)
{
PTS.Validate(PTS.FsDestroySubpage(PtsContext.Context, pfsFigureContent), PtsContext);
}
if (pmcsclientOut != IntPtr.Zero)
{
MarginCollapsingState mcs = PtsContext.HandleToObject(pmcsclientOut) as MarginCollapsingState;
PTS.ValidateHandle(mcs);
mcs.Dispose();
pmcsclientOut = IntPtr.Zero;
}
// Create subpage with new width.
subpageWidth = fsbbox.fsrc.du + 1; // add 1/300px to avoid rounding errors
columnInfoCollection[0].durWidth = subpageWidth;
// Create subpage
PTS.FSFMTR fsfmtr;
IntPtr brParaOut;
PTS.FSRECT marginRect = new PTS.FSRECT(0, 0, subpageWidth, subpageHeight);
CreateSubpageFiniteHelper(PtsContext, IntPtr.Zero, PTS.False, _mainTextSegment.Handle, IntPtr.Zero, PTS.False, PTS.True,
fswdir, subpageWidth, subpageHeight, ref marginRect,
cColumns, columnInfoCollection, PTS.False,
out fsfmtr, out pfsFigureContent, out brParaOut, out dvr, out fsbbox, out pmcsclientOut,
out dvrTopSpace);
if(brParaOut != IntPtr.Zero)
{
PTS.Validate(PTS.FsDestroySubpageBreakRecord(PtsContext.Context, brParaOut));
}
}
}
else
{
subpageWidth = TextDpi.ToTextDpi(TextDpi.MinWidth);
}
// Get the size of the figure. For height PTS already reports calculated value.
// But width is the same as subpage width. Include margins in dur since we are not using
// distance to text anymore.
dur = subpageWidth + mbp.MBPLeft + mbp.MBPRight;
// Destroy objects created by PTS, but not used here.
if (pmcsclientOut != IntPtr.Zero)
{
MarginCollapsingState mcs = PtsContext.HandleToObject(pmcsclientOut) as MarginCollapsingState;
PTS.ValidateHandle(mcs);
mcs.Dispose();
pmcsclientOut = IntPtr.Zero;
}
dvr += mbp.MBPTop + mbp.MBPBottom;
if(!isHeightAuto)
{
// Replace height with explicit height if specified, adding margins in addition to height
// Border and padding are included in specified height but margins are external
dvr = TextDpi.ToTextDpi(anchorLimitedHeight) + mbp.MarginTop + mbp.MarginBottom;
}
FigureHorizontalAnchor horzAnchor = element.HorizontalAnchor;
FigureVerticalAnchor vertAnchor = element.VerticalAnchor;
fsfigprops.fskrefU = (PTS.FSKREF)(((int)horzAnchor) / 3);
fsfigprops.fskrefV = (PTS.FSKREF)(((int)vertAnchor) / 3);
fsfigprops.fskalfU = (PTS.FSKALIGNFIG)(((int)horzAnchor) % 3);
fsfigprops.fskalfV = (PTS.FSKALIGNFIG)(((int)vertAnchor) % 3);
// PTS does not allow to anchor delayed figures to 'Character'
if (!PTS.ToBoolean(fInTextLine))
{
if (fsfigprops.fskrefU == PTS.FSKREF.fskrefChar)
{
fsfigprops.fskrefU = PTS.FSKREF.fskrefMargin;
fsfigprops.fskalfU = PTS.FSKALIGNFIG.fskalfMin;
}
if (fsfigprops.fskrefV == PTS.FSKREF.fskrefChar)
{
fsfigprops.fskrefV = PTS.FSKREF.fskrefMargin;
fsfigprops.fskalfV = PTS.FSKALIGNFIG.fskalfMin;
}
}
// Always wrap text on both sides of the floater.
fsfigprops.fskwrap = PTS.WrapDirectionToFskwrap(element.WrapDirection);
fsfigprops.fNonTextPlane = PTS.False;
fsfigprops.fAllowOverlap = PTS.False;
fsfigprops.fDelayable = PTS.FromBoolean(element.CanDelayPlacement);
// Tight wrap is disabled for now.
cPolygons = cVertices = 0;
// Update handle to PTS subpage.
((FigureParaClient)paraClient).SubpageHandle = pfsFigureContent;
}
internal int CalcFigurePosition(
IntPtr pfsclient, // IN: client opaque data
IntPtr pfsparaclientFigure, // IN:
IntPtr nmpFigure, // IN: figure's name
uint fswdir, // IN: current direction
ref PTS.FSRECT fsrcPage, // IN: page rectangle
ref PTS.FSRECT fsrcMargin, // IN: rectangle within page margins
ref PTS.FSRECT fsrcTrack, // IN: track rectangle
ref PTS.FSRECT fsrcFigurePreliminary,// IN: prelim figure rect calculated from figure props
int fMustPosition, // IN: must find position in this track?
int fInTextLine, // IN: it is attached to text line
out int fPushToNextTrack, // OUT: push to next track?
out PTS.FSRECT fsrcFlow, // OUT: FlowAround rectangle
out PTS.FSRECT fsrcOverlap, // OUT: Overlap rectangle
out PTS.FSBBOX fsbbox, // OUT: bbox
out PTS.FSRECT fsrcSearch) // OUT: search area for overlap
{
int fserr = PTS.fserrNone;
try
{
FigureParagraph para = PtsContext.HandleToObject(nmpFigure) as FigureParagraph;
PTS.ValidateHandle(para);
FigureParaClient paraClient = PtsContext.HandleToObject(pfsparaclientFigure) as FigureParaClient;
PTS.ValidateHandle(paraClient);
para.CalcFigurePosition(paraClient, fswdir, ref fsrcPage, ref fsrcMargin, ref fsrcTrack,
ref fsrcFigurePreliminary, fMustPosition, fInTextLine, out fPushToNextTrack, out fsrcFlow,
out fsrcOverlap, out fsbbox, out fsrcSearch);
}
catch (Exception e)
{
fPushToNextTrack = 0; fsrcFlow = fsrcOverlap = fsrcSearch = new PTS.FSRECT(); fsbbox = new PTS.FSBBOX();
PtsContext.CallbackException = e;
fserr = PTS.fserrCallbackException;
}
catch
{
fPushToNextTrack = 0; fsrcFlow = fsrcOverlap = fsrcSearch = new PTS.FSRECT(); fsbbox = new PTS.FSBBOX();
PtsContext.CallbackException = new System.Exception("Caught a non CLS Exception");
fserr = PTS.fserrCallbackException;
}
return fserr;
}
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;
}
// ------------------------------------------------------------------
// Returns rectangles for a single composite line correcsponding to the
// given dcp range. Includes trailing whitespaces.
// Params:
// dcpRangeStart - range's cp start position. Adjusted for
// line's cp range.
// cchRange - nuber of cps in the range.
// lineTopSpace - the value that line's height should
// be extended to at the top.
// lineRightSpace - the value that line's width should
// be extended to at the right.
// lineDesc - line description.
// lineIndex - line index.
// elemDesc - element description.
// visibleRect - visibility rectangle. It is Ok to return
// null if the line is not visible.
// hasAttachedObjects- Attached objects are present
// Returns:
// null - if line is not visible
// rectangles - otherwise.
// -----------------------------------------------------------------
private List<Rect> RectanglesFromDcpRangeOfCompositeLineElement(
int dcpRangeStart,
int cchRange,
double lineTopSpace,
double lineRightSpace,
ref PTS.FSLINEDESCRIPTIONCOMPOSITE lineDesc,
int lineIndex,
ref PTS.FSLINEELEMENT elemDesc,
int elemIndex,
Rect visibleRect)
{
List<Rect> rectangles = null;
Rect elementRect = new PTS.FSRECT(elemDesc.urBBox, lineDesc.vrStart, elemDesc.durBBox, lineDesc.dvrAscent + lineDesc.dvrDescent).FromTextDpi();
// width has to be adjusted to include trailing whitespaces...
LineVisual lineVisual = FetchLineVisualComposite(lineIndex, elemIndex);
if (lineVisual != null)
{
elementRect.Width = Math.Max(lineVisual.WidthIncludingTrailingWhitespace, 0);
}
elementRect.Y = elementRect.Y - lineTopSpace;
elementRect.Height = elementRect.Height + lineTopSpace;
elementRect.Width = elementRect.Width + lineRightSpace;
// Ignore horizontal offset because TextBox page width != extent width.
// It's ok to include content that doesn't strictly intersect -- this
// is a perf optimization and the edge cases won't significantly hurt us.
Rect testRect = elementRect;
testRect.X = visibleRect.X;
if (testRect.IntersectsWith(visibleRect))
{
// Check whether the line is fully selected - we don't need to reformat it in this case
if (dcpRangeStart == elemDesc.dcpFirst && elemDesc.dcpLim <= (dcpRangeStart + cchRange))
{
rectangles = new List<Rect>(1);
rectangles.Add(elementRect);
}
else
{
// Create and format line
Line line = new Line(Paragraph.StructuralCache.TextFormatterHost, this, Paragraph.ParagraphStartCharacterPosition);
Line.FormattingContext ctx = new Line.FormattingContext(false, PTS.ToBoolean(elemDesc.fClearOnLeft), PTS.ToBoolean(elemDesc.fClearOnRight), TextParagraph.TextRunCache);
if (IsOptimalParagraph)
{
ctx.LineFormatLengthTarget = elemDesc.dcpLim - elemDesc.dcpFirst;
}
TextParagraph.FormatLineCore(line, elemDesc.pfsbreakreclineclient, ctx, elemDesc.dcpFirst, elemDesc.dur, PTS.ToBoolean(lineDesc.fTreatedAsFirst), elemDesc.dcpFirst);
Invariant.Assert(line.SafeLength == elemDesc.dcpLim - elemDesc.dcpFirst, "Line length is out of [....]");
double duOffset = TextDpi.FromTextDpi(elemDesc.urStart);
double dvOffset = TextDpi.FromTextDpi(lineDesc.vrStart);
rectangles = line.GetRangeBounds(dcpRangeStart, cchRange, duOffset, dvOffset);
if (!DoubleUtil.IsZero(lineTopSpace))
{
for (int i = 0, count = rectangles.Count; i < count; ++i)
{
Rect r = rectangles[i];
r.Y = r.Y - lineTopSpace;
r.Height = r.Height + lineTopSpace;
rectangles[i] = r;
}
}
if (!DoubleUtil.IsZero(lineRightSpace))
{
// add the rect representing end-of-line / end-of-para
rectangles.Add(
new Rect(
duOffset + TextDpi.FromTextDpi(line.Start + line.Width),
dvOffset - lineTopSpace,
lineRightSpace,
TextDpi.FromTextDpi(line.Height) + lineTopSpace
)
);
}
// dispose of the line
line.Dispose();
}
}
return (rectangles);
}
/// <summary>
/// Arranges content.
/// </summary>
/// <param name="arrangeSize">Size that element should use to arrange itself and its children.</param>
/// <param name="viewport">Viewport for visible content.</param>
internal void Arrange(Size arrangeSize, Rect viewport)
{
Invariant.Assert(_document.StructuralCache.DtrList == null || _document.StructuralCache.DtrList.Length == 0 ||
(_document.StructuralCache.DtrList.Length == 1 && _document.StructuralCache.BackgroundFormatInfo.DoesFinalDTRCoverRestOfText));
// Arrange the content and create visual tree.
_documentPage.Arrange(arrangeSize);
_documentPage.EnsureValidVisuals();
_arrangedAfterFormat = true;
// Render content only for the current viewport.
if (viewport.IsEmpty)
{
viewport = new Rect(0, 0, arrangeSize.Width, _document.StructuralCache.BackgroundFormatInfo.ViewportHeight);
}
PTS.FSRECT fsrectViewport = new PTS.FSRECT(viewport);
_documentPage.UpdateViewport(ref fsrectViewport, true);
_isContentFormatValid = true;
}
internal void FormatCellFinite(Size subpageSize, IntPtr breakRecordIn, bool isEmptyOk, uint fswdir,
PTS.FSKSUPPRESSHARDBREAKBEFOREFIRSTPARA fsksuppresshardbreakbeforefirstparaIn,
out PTS.FSFMTR fsfmtr, out int dvrUsed, out IntPtr breakRecordOut)
{
IntPtr pfspara;
PTS.FSBBOX fsbbox;
IntPtr pmcsclientOut;
PTS.FSKCLEAR fskclearOut;
int dvrTopSpace;
PTS.FSPAP fspap;
if(CellParagraph.StructuralCache.DtrList != null && breakRecordIn != null)
{
CellParagraph.InvalidateStructure(TextContainerHelper.GetCPFromElement(CellParagraph.StructuralCache.TextContainer, CellParagraph.Element, ElementEdge.BeforeStart));
}
// Ensures segment is created for paragraph
fspap = new PTS.FSPAP();
CellParagraph.GetParaProperties(ref fspap);
PTS.FSRECT rectCell;
rectCell = new PTS.FSRECT();
rectCell.u = rectCell.v = 0;
rectCell.du = TextDpi.ToTextDpi(subpageSize.Width);
rectCell.dv = TextDpi.ToTextDpi(subpageSize.Height);
// Suppress top space if cell is broken, but not otherwise
bool suppressTopSpace = (breakRecordIn != IntPtr.Zero) ? true : false;
CellParagraph.FormatParaFinite(this, breakRecordIn,
PTS.FromBoolean(true),
IntPtr.Zero,
PTS.FromBoolean(isEmptyOk),
PTS.FromBoolean(suppressTopSpace),
fswdir,
ref rectCell,
null,
PTS.FSKCLEAR.fskclearNone,
fsksuppresshardbreakbeforefirstparaIn,
out fsfmtr,
out pfspara,
out breakRecordOut,
out dvrUsed,
out fsbbox,
out pmcsclientOut,
out fskclearOut,
out dvrTopSpace);
if (pmcsclientOut != IntPtr.Zero)
{
MarginCollapsingState mcs = PtsContext.HandleToObject(pmcsclientOut) as MarginCollapsingState;
PTS.ValidateHandle(mcs);
dvrUsed += mcs.Margin;
mcs.Dispose();
pmcsclientOut = IntPtr.Zero;
}
_paraHandle.Value = pfspara;
}
internal unsafe void UpdateBottomlessPara(
IntPtr pfspara, // IN: pointer to the para data
SubpageParaClient paraClient, // IN:
int fSuppressTopSpace, // IN: suppress empty space at the top of the page
uint fswdir, // IN: current direction
int urTrack, // IN: u of bootomless rectangle to fill
int durTrack, // IN: du of bootomless rectangle to fill
int vrTrack, // IN: v of bootomless rectangle to fill
MarginCollapsingState mcs, // IN: input margin collapsing state
PTS.FSKCLEAR fskclearIn, // IN: clear property that must be satisfied
int fInterruptable, // IN: formatting can be interrupted
out PTS.FSFMTRBL fsfmtrbl, // OUT: result of formatting the paragraph
out int dvrUsed, // OUT: vertical space used by the para
out PTS.FSBBOX fsbbox, // OUT: para BBox
out IntPtr pmcsclientOut, // OUT: margin collapsing state at the bottom
out PTS.FSKCLEAR fskclearOut, // OUT: ClearIn for the next paragraph
out int dvrTopSpace, // OUT: top space due to collapsed margin
out int fPageBecomesUninterruptable)// OUT: interruption is prohibited from now on
{
int subpageWidth, urSubpageMargin, durSubpageMargin, vrSubpageMargin;
int cColumns;
int marginTop, marginBottom;
MbpInfo mbp;
MarginCollapsingState mcsSubpage, mcsBottom;
PTS.FSCOLUMNINFO[] columnInfoCollection;
uint fswdirSubpage = PTS.FlowDirectionToFswdir(((FlowDirection)Element.GetValue(FrameworkElement.FlowDirectionProperty)));
// Initialize the subpage size and its margin.
subpageWidth = durTrack;
urSubpageMargin = vrSubpageMargin = 0;
// Set clear property
Invariant.Assert(Element is TableCell || Element is AnchoredBlock);
fskclearIn = PTS.WrapDirectionToFskclear((WrapDirection)Element.GetValue(Block.ClearFloatersProperty));
// Take into account MBPs and modify subpage metrics,
// and make sure that subpage is at least 1 unit wide (cannot measure at width <= 0)
// NOTE: Do not suppress top space for bottomles pages.
mbp = MbpInfo.FromElement(Element);
if(fswdirSubpage != fswdir)
{
PTS.FSRECT fsrcToFillSubpage = new PTS.FSRECT(urTrack, 0, durTrack, 0);
PTS.FSRECT pageRect = StructuralCache.CurrentFormatContext.PageRect;
PTS.Validate(PTS.FsTransformRectangle(fswdir, ref pageRect, ref fsrcToFillSubpage, fswdirSubpage, out fsrcToFillSubpage));
urTrack = fsrcToFillSubpage.u;
durTrack = fsrcToFillSubpage.du;
mbp.MirrorMargin();
}
subpageWidth = Math.Max(1, subpageWidth - (mbp.MBPLeft + mbp.MBPRight));
MarginCollapsingState.CollapseTopMargin(PtsContext, mbp, mcs, out mcsSubpage, out marginTop);
// Destroy top margin collapsing state (not needed anymore).
if (mcsSubpage != null)
{
mcsSubpage.Dispose();
mcsSubpage = null;
}
durSubpageMargin = subpageWidth;
// Initialize column info
// For bottomles spara, limit line height to the height of the current format context in structural cache.
ColumnPropertiesGroup columnProperties = new ColumnPropertiesGroup(_element);
double lineHeight = DynamicPropertyReader.GetLineHeightValue(_element);
double pageFontSize = (double)_structuralCache.PropertyOwner.GetValue(Block.FontSizeProperty);
FontFamily pageFontFamily = (FontFamily)_structuralCache.PropertyOwner.GetValue(Block.FontFamilyProperty);
// Get columns info, setting ownerIsFlowDocument flag to false. A flow document should not be formatted as a subpage and we
// do not want default column widths to be set on TableCells and floaters
cColumns = PtsHelper.CalculateColumnCount(columnProperties, lineHeight, TextDpi.FromTextDpi(subpageWidth), pageFontSize, pageFontFamily, false);
columnInfoCollection = new PTS.FSCOLUMNINFO[cColumns];
fixed (PTS.FSCOLUMNINFO* rgColumnInfo = columnInfoCollection)
{
PtsHelper.GetColumnsInfo(columnProperties, lineHeight, TextDpi.FromTextDpi(subpageWidth), pageFontSize, pageFontFamily, cColumns, rgColumnInfo, false);
}
StructuralCache.CurrentFormatContext.PushNewPageData(new Size(TextDpi.FromTextDpi(subpageWidth), TextDpi.MaxWidth),
new Thickness(),
true,
false);
// Create subpage
fixed (PTS.FSCOLUMNINFO* rgColumnInfo = columnInfoCollection)
{
PTS.Validate(PTS.FsUpdateBottomlessSubpage(PtsContext.Context, pfspara, _mainTextSegment.Handle, fSuppressTopSpace,
fswdir, subpageWidth, urSubpageMargin, durSubpageMargin, vrSubpageMargin,
cColumns, rgColumnInfo, 0, null, null, 0, null, null, PTS.FromBoolean(true),
out fsfmtrbl, out dvrUsed, out fsbbox, out pmcsclientOut, out dvrTopSpace,
out fPageBecomesUninterruptable), PtsContext);
}
StructuralCache.CurrentFormatContext.PopPageData();
fskclearOut = PTS.FSKCLEAR.fskclearNone;
if (fsfmtrbl != PTS.FSFMTRBL.fmtrblCollision)
{
// Bottom margin collapsing:
// (1) retrieve mcs from the subtrack
// (2) do margin collapsing; create a new margin collapsing state
if (pmcsclientOut != IntPtr.Zero)
{
mcsSubpage = PtsContext.HandleToObject(pmcsclientOut) as MarginCollapsingState;
PTS.ValidateHandle(mcsSubpage);
pmcsclientOut = IntPtr.Zero;
}
MarginCollapsingState.CollapseBottomMargin(PtsContext, mbp, mcsSubpage, out mcsBottom, out marginBottom);
pmcsclientOut = (mcsBottom != null) ? mcsBottom.Handle : IntPtr.Zero;
// Since MCS returned by PTS is never passed back, destroy MCS provided by PTS.
// If necessary, new MCS is created and passed back to PTS.
if (mcsSubpage != null)
{
mcsSubpage.Dispose();
mcsSubpage = null;
}
if (PTS.ToBoolean(fsbbox.fDefined))
{
// Workaround for PTS bug 860: get max of the page rect and
// bounding box of the page.
dvrUsed = Math.Max(dvrUsed, fsbbox.fsrc.dv + fsbbox.fsrc.v);
durTrack = Math.Max(durTrack, fsbbox.fsrc.du + fsbbox.fsrc.u);
}
// Take into account MBPs and modify subtrack metrics
dvrTopSpace = (mbp.BPTop != 0) ? marginTop : dvrTopSpace;
dvrUsed += (marginTop + mbp.BPTop) + (marginBottom + mbp.BPBottom);
// Update bounding box
fsbbox.fsrc.u = urTrack + mbp.MarginLeft;
fsbbox.fsrc.v = vrTrack + dvrTopSpace;
fsbbox.fsrc.du = Math.Max(durTrack - (mbp.MarginLeft + mbp.MarginRight), 0);
fsbbox.fsrc.dv = Math.Max(dvrUsed - dvrTopSpace, 0);
}
else
{
Debug.Assert(pmcsclientOut == IntPtr.Zero);
pfspara = IntPtr.Zero;
dvrUsed = dvrTopSpace = 0;
}
if(fswdirSubpage != fswdir)
{
PTS.FSRECT pageRect = StructuralCache.CurrentFormatContext.PageRect;
PTS.Validate(PTS.FsTransformBbox(fswdirSubpage, ref pageRect, ref fsbbox, fswdir, out fsbbox));
}
// Update information about first/last chunk. In bottomless scenario
// paragraph is not broken, so there is only one chunk.
paraClient.SetChunkInfo(true, true);
}
internal unsafe void FormatParaFinite(
SubpageParaClient paraClient, // IN:
IntPtr pbrkrecIn, // IN: break record---use if !NULL
int fBRFromPreviousPage, // IN: break record was created on previous page
IntPtr footnoteRejector, // IN:
int fEmptyOk, // IN: is it OK not to add anything?
int fSuppressTopSpace, // IN: suppress empty space at the top of the page
uint fswdir, // IN: current direction
ref PTS.FSRECT fsrcToFill, // IN: rectangle to fill
MarginCollapsingState mcs, // IN: input margin collapsing state
PTS.FSKCLEAR fskclearIn, // IN: clear property that must be satisfied
PTS.FSKSUPPRESSHARDBREAKBEFOREFIRSTPARA fsksuppresshardbreakbeforefirstparaIn,
// IN: suppress breaks at track start?
out PTS.FSFMTR fsfmtr, // OUT: result of formatting the paragraph
out IntPtr pfspara, // OUT: pointer to the para data
out IntPtr pbrkrecOut, // OUT: pointer to the para break record
out int dvrUsed, // OUT: vertical space used by the para
out PTS.FSBBOX fsbbox, // OUT: para BBox
out IntPtr pmcsclientOut, // OUT: margin collapsing state at the bottom
out PTS.FSKCLEAR fskclearOut, // OUT: ClearIn for the next paragraph
out int dvrTopSpace) // OUT: top space due to collapsed margin
{
uint fswdirSubpage = PTS.FlowDirectionToFswdir(((FlowDirection)Element.GetValue(FrameworkElement.FlowDirectionProperty)));
int subpageWidth, subpageHeight;
int cColumns;
int marginTop, marginBottom;
MbpInfo mbp;
MarginCollapsingState mcsSubpage, mcsBottom;
PTS.FSRECT fsrcSubpageMargin;
PTS.FSCOLUMNINFO [] columnInfoCollection;
// Currently it is possible to get MCS and BR in following situation:
// At the end of the page there is a paragraph with delayed figure, so the figure
// gets delayed to the next page. But part of the next paragraph fits in the page,
// so it gets broken. PTS creates BR with delayed figure and broken para.
// PTS will format the next page starting from delayed figure, which can produce MCS.
// So when the next paragraph is continued from BR, it has MCS.
// This problem is currently investigated by PTS team: PTSLS bug 915.
// For now, MCS gets ignored here.
//Debug.Assert(pbrkrecIn == IntPtr.Zero || mcs == null, "Broken paragraph cannot have margin collapsing state.");
if (mcs != null && pbrkrecIn != IntPtr.Zero)
{
mcs = null;
}
// Initialize the subpage size and its margin.
fsrcSubpageMargin = new PTS.FSRECT();
subpageWidth = fsrcToFill.du;
subpageHeight = fsrcToFill.dv;
// Set clear property
Invariant.Assert(Element is TableCell || Element is AnchoredBlock);
fskclearIn = PTS.WrapDirectionToFskclear((WrapDirection)Element.GetValue(Block.ClearFloatersProperty));
// Take into account MBPs and modify subpage metrics,
// and make sure that subpage is at least 1 unit wide (cannot measure at width <= 0)
marginTop = 0;
mcsSubpage = null;
// Get MBP info. Since subpage height and width must be at least 1, the max size for MBP is subpage dimensions less 1
mbp = MbpInfo.FromElement(Element);
if(fswdirSubpage != fswdir)
{
PTS.FSRECT pageRect = StructuralCache.CurrentFormatContext.PageRect;
PTS.Validate(PTS.FsTransformRectangle(fswdir, ref pageRect, ref fsrcToFill, fswdirSubpage, out fsrcToFill));
mbp.MirrorMargin();
}
subpageWidth = Math.Max(1, subpageWidth - (mbp.MBPLeft + mbp.MBPRight));
if (pbrkrecIn == IntPtr.Zero)
{
// Top margin collapsing. If suppresing top space, top margin is always 0.
MarginCollapsingState.CollapseTopMargin(PtsContext, mbp, mcs, out mcsSubpage, out marginTop);
if (PTS.ToBoolean(fSuppressTopSpace))
{
marginTop = 0;
}
subpageHeight = Math.Max(1, subpageHeight - (marginTop + mbp.BPTop));
// Destroy top margin collapsing state (not needed anymore).
if (mcsSubpage != null)
{
mcsSubpage.Dispose();
mcsSubpage = null;
}
}
else
{
Debug.Assert(fSuppressTopSpace == 1, "Top space should be always suppressed at the top of broken paragraph.");
}
fsrcSubpageMargin.du = subpageWidth;
fsrcSubpageMargin.dv = subpageHeight;
// Initialize column info
ColumnPropertiesGroup columnProperties = new ColumnPropertiesGroup(_element);
double lineHeight = DynamicPropertyReader.GetLineHeightValue(_element);
double pageFontSize = (double)_structuralCache.PropertyOwner.GetValue(Block.FontSizeProperty);
FontFamily pageFontFamily = (FontFamily)_structuralCache.PropertyOwner.GetValue(Block.FontFamilyProperty);
// Get columns info, setting ownerIsFlowDocument flag to false. A flow document should not be formatted as a subpage and we
// do not want default column widths to be set on TableCells and floaters
cColumns = PtsHelper.CalculateColumnCount(columnProperties, lineHeight, TextDpi.FromTextDpi(subpageWidth), pageFontSize, pageFontFamily, false);
columnInfoCollection = new PTS.FSCOLUMNINFO[cColumns];
fixed (PTS.FSCOLUMNINFO* rgColumnInfo = columnInfoCollection)
{
PtsHelper.GetColumnsInfo(columnProperties, lineHeight, TextDpi.FromTextDpi(subpageWidth), pageFontSize, pageFontFamily, cColumns, rgColumnInfo, false);
}
// Format subpage
StructuralCache.CurrentFormatContext.PushNewPageData(new Size(TextDpi.FromTextDpi(subpageWidth), TextDpi.FromTextDpi(subpageHeight)),
new Thickness(),
false,
true);
fixed (PTS.FSCOLUMNINFO* rgColumnInfo = columnInfoCollection)
{
PTS.Validate(PTS.FsCreateSubpageFinite(PtsContext.Context, pbrkrecIn, fBRFromPreviousPage, _mainTextSegment.Handle,
footnoteRejector, fEmptyOk, fSuppressTopSpace, fswdir, subpageWidth, subpageHeight,
ref fsrcSubpageMargin, cColumns, rgColumnInfo, PTS.False,
0, null, null, 0, null, null, PTS.FromBoolean(false),
fsksuppresshardbreakbeforefirstparaIn,
out fsfmtr, out pfspara, out pbrkrecOut, out dvrUsed, out fsbbox, out pmcsclientOut, out dvrTopSpace), PtsContext);
}
StructuralCache.CurrentFormatContext.PopPageData();
fskclearOut = PTS.FSKCLEAR.fskclearNone;
if (PTS.ToBoolean(fsbbox.fDefined))
{
// Workaround for PTS bug 860: get max of the page rect and
// bounding box of the page.
dvrUsed = Math.Max(dvrUsed, fsbbox.fsrc.dv + fsbbox.fsrc.v);
fsrcToFill.du = Math.Max(fsrcToFill.du, fsbbox.fsrc.du + fsbbox.fsrc.u);
}
if (pbrkrecIn == IntPtr.Zero) // if first chunk
{
// Take into account MBPs and modify subpage metrics
dvrTopSpace = (mbp.BPTop != 0) ? marginTop : dvrTopSpace;
dvrUsed += (marginTop + mbp.BPTop);
}
if (pmcsclientOut != IntPtr.Zero)
{
mcsSubpage = PtsContext.HandleToObject(pmcsclientOut) as MarginCollapsingState;
PTS.ValidateHandle(mcsSubpage);
pmcsclientOut = IntPtr.Zero;
}
// Initialize subpage metrics
if (fsfmtr.kstop >= PTS.FSFMTRKSTOP.fmtrNoProgressOutOfSpace) // No progress or collision
{
dvrUsed = dvrTopSpace = 0;
//pbrkrecOut = IntPtr.Zero;
//pfspara = IntPtr.Zero;
//pmcsclientOut = IntPtr.Zero;
}
else
{
if (fsfmtr.kstop == PTS.FSFMTRKSTOP.fmtrGoalReached)
{
// Bottom margin collapsing:
// (a) retrieve mcs from the subpage
// (b) do margin collapsing; create a new margin collapsing state
// There is no bottom margin collapsing if paragraph will be continued (output break record is not null).
MarginCollapsingState.CollapseBottomMargin(PtsContext, mbp, mcsSubpage, out mcsBottom, out marginBottom);
pmcsclientOut = (mcsBottom != null) ? mcsBottom.Handle : IntPtr.Zero;
if (pmcsclientOut == IntPtr.Zero) // if last chunk
dvrUsed += marginBottom + mbp.BPBottom;
}
// Update bounding box
fsbbox.fsrc.u = fsrcToFill.u + mbp.MarginLeft;
fsbbox.fsrc.v = fsrcToFill.v + dvrTopSpace;
fsbbox.fsrc.du = Math.Max(fsrcToFill.du - (mbp.MarginLeft + mbp.MarginRight), 0);
fsbbox.fsrc.dv = Math.Max(dvrUsed - dvrTopSpace, 0);
}
if(fswdirSubpage != fswdir)
{
PTS.FSRECT pageRect = StructuralCache.CurrentFormatContext.PageRect;
PTS.Validate(PTS.FsTransformBbox(fswdirSubpage, ref pageRect, ref fsbbox, fswdir, out fsbbox));
}
// Since MCS returned by PTS is never passed back, destroy MCS provided by PTS.
// If necessary, new MCS is created and passed back to PTS (see above).
if (mcsSubpage != null)
{
mcsSubpage.Dispose();
mcsSubpage = null;
}
// Update information about first/last chunk
paraClient.SetChunkInfo(pbrkrecIn == IntPtr.Zero, pbrkrecOut == IntPtr.Zero);
}
//-------------------------------------------------------------------
// Update the viewport
//-------------------------------------------------------------------
internal void UpdateViewport(ref PTS.FSRECT viewport, bool drawBackground)
{
Rect contentViewport;
// Transform point to PtsPage coordinate system.
// NOTE: TransformToAncestor is safe (will never throw an exception).
GeneralTransform transform = this.PageVisual.Child.TransformToAncestor(this.PageVisual);
transform = transform.Inverse;
contentViewport = viewport.FromTextDpi();
if (transform != null)
{
contentViewport = transform.TransformBounds(contentViewport);
}
if(!IsDisposed)
{
// Draw background
if (drawBackground)
{
this.PageVisual.DrawBackground((Brush)_structuralCache.PropertyOwner.GetValue(FlowDocument.BackgroundProperty), contentViewport);
}
using (_structuralCache.SetDocumentVisualValidationContext(this))
{
PTS.FSRECT contentViewportTextDpi = new PTS.FSRECT(contentViewport);
_ptsPage.UpdateViewport(ref contentViewportTextDpi);
_structuralCache.DetectInvalidOperation();
}
ValidateTextView();
}
}
internal override void FormatFloaterContentFinite(
FloaterBaseParaClient paraClient, // IN:
IntPtr pbrkrecIn, // IN: break record---use if !IntPtr.Zero
int fBRFromPreviousPage, // IN: break record was created on previous page
IntPtr footnoteRejector, // IN:
int fEmptyOk, // IN: is it OK not to add anything?
int fSuppressTopSpace, // IN: suppress empty space at the top of the page
uint fswdir, // IN: direction of Track
int fAtMaxWidth, // IN: formating is at full width of column
int durAvailable, // IN: width of available space
int dvrAvailable, // IN: height of available space
PTS.FSKSUPPRESSHARDBREAKBEFOREFIRSTPARA fsksuppresshardbreakbeforefirstparaIn,
// IN: suppress breaks at track start?
out PTS.FSFMTR fsfmtr, // OUT: result of formatting
out IntPtr pfsFloatContent, // OUT: opaque for PTS pointer pointer to formatted content
out IntPtr pbrkrecOut, // OUT: pointer to the floater content break record
out int durFloaterWidth, // OUT: floater width
out int dvrFloaterHeight, // OUT: floater height
out PTS.FSBBOX fsbbox, // OUT: floater bbox
out int cPolygons, // OUT: number of polygons
out int cVertices) // OUT: total number of vertices in all polygons
{
uint fswdirPara = PTS.FlowDirectionToFswdir(((FlowDirection)Element.GetValue(FrameworkElement.FlowDirectionProperty)));
int subpageWidth, subpageHeight;
int dvrTopSpace;
int cColumns;
PTS.FSRECT fsrcSubpageMargin;
PTS.FSCOLUMNINFO[] columnInfoCollection;
IntPtr pmcsclientOut;
double specifiedWidth;
MbpInfo mbp;
Invariant.Assert(paraClient is FloaterParaClient);
// If horizontal alignment is Stretch and we are not formatting at max width,
// we cannot proceed.
if (IsFloaterRejected(PTS.ToBoolean(fAtMaxWidth), TextDpi.FromTextDpi(durAvailable)))
{
durFloaterWidth = dvrFloaterHeight = 0;
cPolygons = cVertices = 0;
fsfmtr = new PTS.FSFMTR();
fsfmtr.kstop = PTS.FSFMTRKSTOP.fmtrNoProgressOutOfSpace;
fsfmtr.fContainsItemThatStoppedBeforeFootnote = PTS.False;
fsfmtr.fForcedProgress = PTS.False;
fsbbox = new PTS.FSBBOX();
fsbbox.fDefined = PTS.False;
pbrkrecOut = IntPtr.Zero;
pfsFloatContent = IntPtr.Zero;
}
else
{
// When formatting bottomless page, PTS may format paragraphs as finite. This happens
// in case of multiple columns. In this case make sure that height is not too big.
if (!StructuralCache.CurrentFormatContext.FinitePage)
{
if (Double.IsInfinity(StructuralCache.CurrentFormatContext.PageHeight))
{
if (dvrAvailable > PTS.dvBottomUndefined / 2)
{
dvrAvailable = Math.Min(dvrAvailable, PTS.dvBottomUndefined / 2);
fEmptyOk = PTS.False;
}
}
else
{
dvrAvailable = Math.Min(dvrAvailable, TextDpi.ToTextDpi(StructuralCache.CurrentFormatContext.PageHeight));
}
}
// Initialize the subpage size. PTS subpage margin is always set to 0 for Floaters.
// If width on floater is specified, use the specified value.
// Margin, border and padding of the floater is extracted from available subpage height
mbp = MbpInfo.FromElement(Element);
// We do not mirror margin as it's used to dist text left and right, and is unnecessary.
// Clip Floater.Width to available width
specifiedWidth = CalculateWidth(TextDpi.FromTextDpi(durAvailable));
AdjustDurAvailable(specifiedWidth, ref durAvailable, out subpageWidth);
subpageHeight = Math.Max(1, dvrAvailable - (mbp.MBPTop + mbp.MBPBottom));
fsrcSubpageMargin = new PTS.FSRECT();
fsrcSubpageMargin.du = subpageWidth;
fsrcSubpageMargin.dv = subpageHeight;
// Initialize column info. Floater always has just 1 column.
cColumns = 1;
columnInfoCollection = new PTS.FSCOLUMNINFO[cColumns];
columnInfoCollection[0].durBefore = 0;
columnInfoCollection[0].durWidth = subpageWidth;
// Format subpage
CreateSubpageFiniteHelper(PtsContext, pbrkrecIn, fBRFromPreviousPage, _mainTextSegment.Handle,
footnoteRejector, fEmptyOk, PTS.True, fswdir, subpageWidth, subpageHeight,
ref fsrcSubpageMargin, cColumns, columnInfoCollection, PTS.False, fsksuppresshardbreakbeforefirstparaIn,
out fsfmtr, out pfsFloatContent,
out pbrkrecOut, out dvrFloaterHeight, out fsbbox, out pmcsclientOut, out dvrTopSpace);
// Initialize subpage metrics
if (fsfmtr.kstop >= PTS.FSFMTRKSTOP.fmtrNoProgressOutOfSpace) // No progress or collision
{
Debug.Assert(pmcsclientOut == IntPtr.Zero);
durFloaterWidth = dvrFloaterHeight = 0;
cPolygons = cVertices = 0;
//pbrkrecpara = IntPtr.Zero;
}
else
{
// PTS subpage does not support autosizing, but Floater needs to autosize to its
// content. To workaround this problem, second format of subpage is performed, if
// necessary. It means that if the width of bounding box is smaller than subpage's
// width, second formatting is performed.
// However, if HorizontalAlignment is set to Stretch we should not reformat because floater
// should be at max width
if (PTS.ToBoolean(fsbbox.fDefined))
{
if(fsbbox.fsrc.du < subpageWidth && Double.IsNaN(specifiedWidth) && HorizontalAlignment != HorizontalAlignment.Stretch)
{
// There is a need to reformat PTS subpage, so destroy any resourcces allocated by PTS
// during previous formatting.
if (pfsFloatContent != IntPtr.Zero)
{
PTS.Validate(PTS.FsDestroySubpage(PtsContext.Context, pfsFloatContent), PtsContext);
pfsFloatContent = IntPtr.Zero;
}
if (pbrkrecOut != IntPtr.Zero)
{
PTS.Validate(PTS.FsDestroySubpageBreakRecord(PtsContext.Context, pbrkrecOut), PtsContext);
pbrkrecOut = IntPtr.Zero;
}
if (pmcsclientOut != IntPtr.Zero)
{
MarginCollapsingState mcs = PtsContext.HandleToObject(pmcsclientOut) as MarginCollapsingState;
PTS.ValidateHandle(mcs);
mcs.Dispose();
pmcsclientOut = IntPtr.Zero;
}
// Create subpage with new width.
subpageWidth = fsbbox.fsrc.du + 1; // add 1/300px to avoid rounding errors
fsrcSubpageMargin.du = subpageWidth;
fsrcSubpageMargin.dv = subpageHeight;
columnInfoCollection[0].durWidth = subpageWidth;
CreateSubpageFiniteHelper(PtsContext, pbrkrecIn, fBRFromPreviousPage, _mainTextSegment.Handle,
footnoteRejector, fEmptyOk, PTS.True, fswdir, subpageWidth, subpageHeight,
ref fsrcSubpageMargin, cColumns, columnInfoCollection, PTS.False, fsksuppresshardbreakbeforefirstparaIn,
out fsfmtr, out pfsFloatContent,
out pbrkrecOut, out dvrFloaterHeight, out fsbbox, out pmcsclientOut, out dvrTopSpace);
}
}
else
{
subpageWidth = TextDpi.ToTextDpi(TextDpi.MinWidth);
}
// Destroy objects created by PTS, but not used here.
if (pmcsclientOut != IntPtr.Zero)
{
MarginCollapsingState mcs = PtsContext.HandleToObject(pmcsclientOut) as MarginCollapsingState;
PTS.ValidateHandle(mcs);
mcs.Dispose();
pmcsclientOut = IntPtr.Zero;
}
// Get the size of the floater. For height PTS already reports calculated value.
// But width is the same as subpage width. Add margin values here since we do not use
// distance to text anymore
durFloaterWidth = subpageWidth + mbp.MBPLeft + mbp.MBPRight;
// Add back all MBP values since we do not use dist to text
dvrFloaterHeight += mbp.MBPTop + mbp.MBPBottom;
// Check if floater width fits in available width. It may exceed available width because borders and
// padding are added.
fsbbox.fsrc.u = 0;
fsbbox.fsrc.v = 0;
fsbbox.fsrc.du = durFloaterWidth;
fsbbox.fsrc.dv = dvrFloaterHeight;
fsbbox.fDefined = PTS.True;
// Tight wrap is disabled for now.
cPolygons = cVertices = 0;
if(durFloaterWidth > durAvailable || dvrFloaterHeight > dvrAvailable)
{
if(PTS.ToBoolean(fEmptyOk))
{
// Get rid of any previous formatting
if (pfsFloatContent != IntPtr.Zero)
{
PTS.Validate(PTS.FsDestroySubpage(PtsContext.Context, pfsFloatContent), PtsContext);
pfsFloatContent = IntPtr.Zero;
}
if (pbrkrecOut != IntPtr.Zero)
{
PTS.Validate(PTS.FsDestroySubpageBreakRecord(PtsContext.Context, pbrkrecOut), PtsContext);
pbrkrecOut = IntPtr.Zero;
}
cPolygons = cVertices = 0;
fsfmtr.kstop = PTS.FSFMTRKSTOP.fmtrNoProgressOutOfSpace;
}
else
{
fsfmtr.fForcedProgress = PTS.True;
}
}
}
}
// Update handle to PTS subpage.
((FloaterParaClient)paraClient).SubpageHandle = pfsFloatContent;
}
internal void UpdateBottomlessPara(
IntPtr pfspara, // IN: pointer to the para data
ContainerParaClient paraClient, // IN:
int iArea, // IN: column-span area index
IntPtr pfsgeom, // IN: pointer to geometry
int fSuppressTopSpace, // IN: suppress empty space at the top of the page
uint fswdir, // IN: current direction
int urTrack, // IN: u of bootomless rectangle to fill
int durTrack, // IN: du of bootomless rectangle to fill
int vrTrack, // IN: v of bootomless rectangle to fill
MarginCollapsingState mcs, // IN: input margin collapsing state
PTS.FSKCLEAR fskclearIn, // IN: clear property that must be satisfied
int fInterruptable, // IN: formatting can be interrupted
out PTS.FSFMTRBL fsfmtrbl, // OUT: result of formatting the paragraph
out int dvrUsed, // OUT: vertical space used by the para
out PTS.FSBBOX fsbbox, // OUT: para BBox
out IntPtr pmcsclientOut, // OUT: margin collapsing state at the bottom
out PTS.FSKCLEAR fskclearOut, // OUT: ClearIn for the next paragraph
out int dvrTopSpace, // OUT: top space due to collapsed margin
out int fPageBecomesUninterruptable)// OUT: interruption is prohibited from now on
{
uint fswdirSubtrack = PTS.FlowDirectionToFswdir(((FlowDirection)Element.GetValue(FrameworkElement.FlowDirectionProperty)));
Debug.Assert(iArea == 0);
// Top margin collapsing.
int marginTop;
MarginCollapsingState mcsContainer;
MbpInfo mbp = MbpInfo.FromElement(Element);
MarginCollapsingState.CollapseTopMargin(PtsContext, mbp, mcs, out mcsContainer, out marginTop);
if (PTS.ToBoolean(fSuppressTopSpace))
{
marginTop = 0;
}
// Set clear property
Invariant.Assert(Element is Block || Element is ListItem);
fskclearIn = PTS.WrapDirectionToFskclear((WrapDirection)Element.GetValue(Block.ClearFloatersProperty));
if(fswdirSubtrack != fswdir)
{
PTS.FSRECT fsrcToFillSubtrack = new PTS.FSRECT(urTrack, 0, durTrack, 0);
PTS.FSRECT pageRect = StructuralCache.CurrentFormatContext.PageRect;
PTS.Validate(PTS.FsTransformRectangle(fswdir, ref pageRect, ref fsrcToFillSubtrack, fswdirSubtrack, out fsrcToFillSubtrack));
urTrack = fsrcToFillSubtrack.u;
durTrack = fsrcToFillSubtrack.du;
mbp.MirrorMargin();
}
// Take into accound MBPs and modify subtrack metrics,
// and make sure that subtrack is at least 1 unit wide (cannot measure at width <= 0)
int urSubtrack, durSubtrack, vrSubtrack;
int dvrSubTrackTopSpace = 0;
urSubtrack = Math.Max(Math.Min(urTrack + mbp.MBPLeft, urTrack + durTrack - 1), urTrack);
durSubtrack = Math.Max(durTrack - (mbp.MBPLeft + mbp.MBPRight), 0);
vrSubtrack = vrTrack + (marginTop + mbp.BPTop);
// Format subtrack
try
{
PTS.Validate(PTS.FsUpdateBottomlessSubtrack(PtsContext.Context, pfspara, this.Handle, iArea,
pfsgeom, fSuppressTopSpace, fswdirSubtrack, urSubtrack, durSubtrack, vrSubtrack,
(mcsContainer != null) ? mcsContainer.Handle : IntPtr.Zero, fskclearIn, fInterruptable,
out fsfmtrbl, out dvrUsed, out fsbbox, out pmcsclientOut,
out fskclearOut, out dvrSubTrackTopSpace, out fPageBecomesUninterruptable), PtsContext);
}
finally
{
// Destroy top margin collapsing state (not needed anymore).
if (mcsContainer != null)
{
mcsContainer.Dispose();
mcsContainer = null;
}
}
if (fsfmtrbl != PTS.FSFMTRBL.fmtrblCollision)
{
// Bottom margin collapsing:
// (1) retrieve mcs from the subtrack
// (2) do margin collapsing; create a new margin collapsing state
if (pmcsclientOut != IntPtr.Zero)
{
mcsContainer = PtsContext.HandleToObject(pmcsclientOut) as MarginCollapsingState;
PTS.ValidateHandle(mcsContainer);
pmcsclientOut = IntPtr.Zero;
}
int marginBottom;
MarginCollapsingState mcsNew;
MarginCollapsingState.CollapseBottomMargin(PtsContext, mbp, mcsContainer, out mcsNew, out marginBottom);
pmcsclientOut = (mcsNew != null) ? mcsNew.Handle : IntPtr.Zero;
// Since MCS returned by PTS is never passed back, destroy MCS provided by PTS.
// If necessary, new MCS is created and passed back to PTS.
if (mcsContainer != null)
{
mcsContainer.Dispose();
mcsContainer = null;
}
// Take into accound MBPs and modify subtrack metrics
dvrTopSpace = (mbp.BPTop != 0) ? marginTop : dvrSubTrackTopSpace;
dvrUsed += (vrSubtrack - vrTrack) + marginBottom + mbp.BPBottom;
}
else
{
Debug.Assert(pmcsclientOut == IntPtr.Zero);
pfspara = IntPtr.Zero;
dvrTopSpace = 0;
}
// Adjust fsbbox to account for margins
fsbbox.fsrc.u -= mbp.MBPLeft;
fsbbox.fsrc.du += mbp.MBPLeft + mbp.MBPRight;
if(fswdirSubtrack != fswdir)
{
PTS.FSRECT pageRect = StructuralCache.CurrentFormatContext.PageRect;
PTS.Validate(PTS.FsTransformBbox(fswdirSubtrack, ref pageRect, ref fsbbox, fswdir, out fsbbox));
}
// Update information about first/last chunk. In bottomless scenario
// paragraph is not broken, so there is only one chunk.
paraClient.SetChunkInfo(true, true);
}
