//-------------------------------------------------------------------
// FormatFloaterContentFinite
//-------------------------------------------------------------------
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
{
Invariant.Assert(paraClient is UIElementParaClient);
Invariant.Assert(Element is BlockUIContainer);
if (fAtMaxWidth == PTS.False && fEmptyOk == PTS.True)
{
// Do not format if not at max width, and if fEmptyOk is true
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
{
cPolygons = cVertices = 0;
// Formatting is not at max width but proceeds anyway because adding no content is not allowed
fsfmtr.fForcedProgress = PTS.FromBoolean(fAtMaxWidth == PTS.False);
// Format UIElement
if (((BlockUIContainer)Element).Child != null)
{
EnsureUIElementIsland();
FormatUIElement(durAvailable, out fsbbox);
}
else
{
// Child elementis null. Create fsbbox only with border and padding info
ClearUIElementIsland();
MbpInfo mbp = MbpInfo.FromElement(Element);
fsbbox.fsrc = new PTS.FSRECT();
fsbbox.fsrc.du = durAvailable;
fsbbox.fsrc.dv = mbp.BPTop + mbp.BPBottom;
}
durFloaterWidth = fsbbox.fsrc.du;
dvrFloaterHeight = fsbbox.fsrc.dv;
if (dvrAvailable < dvrFloaterHeight && fEmptyOk == PTS.True)
{
// Will not fit in available space. Since fEmptyOk is true, we can return null floater
durFloaterWidth = dvrFloaterHeight = 0;
fsfmtr = new PTS.FSFMTR();
fsfmtr.kstop = PTS.FSFMTRKSTOP.fmtrNoProgressOutOfSpace;
fsbbox = new PTS.FSBBOX();
fsbbox.fDefined = PTS.False;
pfsFloatContent = IntPtr.Zero;
}
else
{
// Either floater fits in available space or it doesn't but we cannot return nothing.
// Use the space needed, and set formatter result to forced progress if BUC does not fit in available space.
fsbbox.fDefined = PTS.True;
pfsFloatContent = paraClient.Handle;
if (dvrAvailable < dvrFloaterHeight)
{
// Indicate that progress was forced
Invariant.Assert(fEmptyOk == PTS.False);
fsfmtr.fForcedProgress = PTS.True;
}
fsfmtr.kstop = PTS.FSFMTRKSTOP.fmtrGoalReached;
}
// Set output values for floater content
pbrkrecOut = IntPtr.Zero;
fsfmtr.fContainsItemThatStoppedBeforeFootnote = PTS.False;
}
}
internal override void FormatFloaterContentBottomless(
FloaterBaseParaClient paraClient, // IN:
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
out PTS.FSFMTRBL fsfmtrbl, // OUT: result of formatting
out IntPtr pfsFloatContent, // OUT: opaque for PTS pointer pointer to formatted content
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)));
Invariant.Assert(paraClient is FloaterParaClient);
int subpageWidth, urSubpageMargin, durSubpageMargin, vrSubpageMargin;
int dvrTopSpace, fPageBecomesUninterruptable;
int cColumns;
PTS.FSCOLUMNINFO[] columnInfoCollection;
IntPtr pmcsclientOut;
MbpInfo mbp;
double specifiedWidth;
// If horizontal alignment is Stretch and we are not formatting at max width,
// we cannot proceed.
if (IsFloaterRejected(PTS.ToBoolean(fAtMaxWidth), TextDpi.FromTextDpi(durAvailable)))
{
// Set foater width, height to be greater than available values to signal to PTS that floater does not fit in the space
durFloaterWidth = durAvailable + 1;
dvrFloaterHeight = dvrAvailable + 1;
cPolygons = cVertices = 0;
fsfmtrbl = PTS.FSFMTRBL.fmtrblInterrupted;
fsbbox = new PTS.FSBBOX();
fsbbox.fDefined = PTS.False;
pfsFloatContent = IntPtr.Zero;
}
else
{
// 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 width.
mbp = MbpInfo.FromElement(Element, StructuralCache.TextFormatterHost.PixelsPerDip);
specifiedWidth = CalculateWidth(TextDpi.FromTextDpi(durAvailable));
AdjustDurAvailable(specifiedWidth, ref durAvailable, out subpageWidth);
durSubpageMargin = subpageWidth;
urSubpageMargin = vrSubpageMargin = 0;
// Initialize column info. Floater always has just 1 column.
cColumns = 1;
columnInfoCollection = new PTS.FSCOLUMNINFO[cColumns];
columnInfoCollection[0].durBefore = 0;
columnInfoCollection[0].durWidth = subpageWidth;
// Create subpage
InvalidateMainTextSegment();
CreateSubpageBottomlessHelper(PtsContext, _mainTextSegment.Handle, PTS.True,
fswdir, subpageWidth, urSubpageMargin, durSubpageMargin, vrSubpageMargin,
cColumns, columnInfoCollection,
out fsfmtrbl, out pfsFloatContent, out dvrFloaterHeight, out fsbbox, out pmcsclientOut,
out dvrTopSpace, out fPageBecomesUninterruptable);
if (fsfmtrbl != PTS.FSFMTRBL.fmtrblCollision)
{
// 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 full column 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);
}
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 = durSubpageMargin = fsbbox.fsrc.du + 1; // add 1/300px to avoid rounding errors
columnInfoCollection[0].durWidth = subpageWidth;
CreateSubpageBottomlessHelper(PtsContext, _mainTextSegment.Handle, PTS.True,
fswdir, subpageWidth, urSubpageMargin, durSubpageMargin, vrSubpageMargin,
cColumns, columnInfoCollection,
out fsfmtrbl, out pfsFloatContent, out dvrFloaterHeight, out fsbbox, out pmcsclientOut,
out dvrTopSpace, out fPageBecomesUninterruptable);
}
}
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.
durFloaterWidth = subpageWidth + mbp.MBPLeft + mbp.MBPRight;
dvrFloaterHeight += mbp.MBPTop + mbp.MBPBottom;
// Check if floater width fits in available width. It may exceed available width because borders
// and padding are added.
if (dvrFloaterHeight > dvrAvailable ||
(durFloaterWidth > durAvailable && !PTS.ToBoolean(fAtMaxWidth))
)
{
// Get rid of any previous formatting
if (pfsFloatContent != IntPtr.Zero)
{
PTS.Validate(PTS.FsDestroySubpage(PtsContext.Context, pfsFloatContent), PtsContext);
}
Debug.Assert(pmcsclientOut == IntPtr.Zero);
cPolygons = cVertices = 0;
pfsFloatContent = IntPtr.Zero;
}
else
{
// Width and height are OK, format floater
// Adjust bounding box to cover entire floater.
fsbbox.fsrc.u = 0;
fsbbox.fsrc.v = 0;
fsbbox.fsrc.du = durFloaterWidth;
fsbbox.fsrc.dv = dvrFloaterHeight;
// Tight wrap is disabled for now.
cPolygons = cVertices = 0;
}
}
else
{
Debug.Assert(pmcsclientOut == IntPtr.Zero);
durFloaterWidth = dvrFloaterHeight = 0;
cPolygons = cVertices = 0;
pfsFloatContent = IntPtr.Zero;
}
}
// Update handle to PTS subpage.
((FloaterParaClient)paraClient).SubpageHandle = pfsFloatContent;
}
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, StructuralCache.TextFormatterHost.PixelsPerDip);
// 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;
}
//-------------------------------------------------------------------
// UpdateBottomlessPara
//-------------------------------------------------------------------
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, StructuralCache.TextFormatterHost.PixelsPerDip);
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);
}
//-------------------------------------------------------------------
// FormatParaFinite
//-------------------------------------------------------------------
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, StructuralCache.TextFormatterHost.PixelsPerDip);
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);
}
//-------------------------------------------------------------------
// CalcFigurePosition
//-------------------------------------------------------------------
internal void CalcFigurePosition(
FigureParaClient paraClient, // IN:
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
{
Figure element = (Figure)Element;
// If overlapping happens, let PTS find another position withing
// the track rectangle.
FigureHorizontalAnchor horizAnchor = element.HorizontalAnchor;
FigureVerticalAnchor vertAnchor = element.VerticalAnchor;
fsrcSearch = CalculateSearchArea(horizAnchor, vertAnchor, ref fsrcPage, ref fsrcMargin, ref fsrcTrack, ref fsrcFigurePreliminary);
if (vertAnchor == FigureVerticalAnchor.ParagraphTop &&
fsrcFigurePreliminary.v != fsrcMargin.v && // If we're not at the top of the column
((fsrcFigurePreliminary.v + fsrcFigurePreliminary.dv) > (fsrcTrack.v + fsrcTrack.dv)) && // And we exceed column height
!PTS.ToBoolean(fMustPosition)) // Can delay placement is handled by figure properties.
{
fPushToNextTrack = PTS.True;
}
else
{
fPushToNextTrack = PTS.False;
}
// Use rectangle proposed by PTS and make sure that figure fits completely in the page.
fsrcFlow = fsrcFigurePreliminary;
if (FigureHelper.IsHorizontalColumnAnchor(horizAnchor))
{
fsrcFlow.u += CalculateParagraphToColumnOffset(horizAnchor, fsrcFigurePreliminary);
}
// Apply horizontal and vertical offsets. Offsets are limited by page height and width
fsrcFlow.u += TextDpi.ToTextDpi(element.HorizontalOffset);
fsrcFlow.v += TextDpi.ToTextDpi(element.VerticalOffset);
// Overlap rectangle is the same as flow around rect
fsrcOverlap = fsrcFlow;
/* If we're anchored to column/content left or right, inflate our overlap width to prevent from aligning two figures right next to one another
* by incorporating column gap information */
if (!FigureHelper.IsHorizontalPageAnchor(horizAnchor) &&
horizAnchor != FigureHorizontalAnchor.ColumnCenter &&
horizAnchor != FigureHorizontalAnchor.ContentCenter)
{
double columnWidth, gap, rule;
int cColumns;
FigureHelper.GetColumnMetrics(StructuralCache, out cColumns, out columnWidth, out gap, out rule);
int duColumnWidth = TextDpi.ToTextDpi(columnWidth);
int duGapWidth = TextDpi.ToTextDpi(gap);
int duColumnWidthWithGap = duColumnWidth + duGapWidth;
int fullColumns = (fsrcOverlap.du / duColumnWidthWithGap);
int duRoundedToNearestColumn = ((fullColumns + 1) * duColumnWidthWithGap) - duGapWidth;
fsrcOverlap.du = duRoundedToNearestColumn; // Round overlap rect to nearest column
if (horizAnchor == FigureHorizontalAnchor.ContentRight ||
horizAnchor == FigureHorizontalAnchor.ColumnRight)
{
fsrcOverlap.u = (fsrcFlow.u + fsrcFlow.du + duGapWidth) - fsrcOverlap.du;
}
// Force search rect to only work vertically within overlap space.
fsrcSearch.u = fsrcOverlap.u;
fsrcSearch.du = fsrcOverlap.du;
}
// Bounding box is equal to actual size of the figure.
fsbbox = new PTS.FSBBOX();
fsbbox.fDefined = PTS.True;
fsbbox.fsrc = fsrcFlow;
}
