EPSRenderRegion Class Reference

Encapsulates an EPS render region. This is used to export EPS files from Camelot. This class is specifically for Adobe Illustrator EPS files, although other EPS filters may derive their render region from this one. More...

#include <saveeps.h>

Inheritance diagram for EPSRenderRegion:

List of all members.

Public Member Functions
	EPSRenderRegion (DocRect ClipRect, Matrix ConvertMatrix, FIXED16 ViewScale)
	Constructor for an EPSOutputFilter object. The object should be initialised before use.
BOOL	Init ()
	Initialise an EPSOutputFilter object.
BOOL	AttachDevice (View *ViewToAttach, CNativeDC *DCToAttach, Spread *SpreadToAttach, bool fOwned=false)
	Attach the EPS render region to a device context and a spread to export.
BOOL	InitDevice ()
	Initialise the device specific mechanisms for this render region.
virtual BOOL	RenderChar (WCHAR ch, Matrix *pMatrix)
virtual BOOL	SaveAttribute (UINT32 Index, AttributeValue *pAttr, BOOL Temp)
	Saves the current attribute on the attribute context stack, and installs the given attribute as the new attribute. If the attribute object is temporary, then it is deleted when the attribute is popped off the stack. See RenderRegion::RestoreAttribute.
virtual BOOL	CloseDown ()
	Tells the EPS render region that all rendering is finished and the region is about to be shut down, so it should output any trailer etc that is required.
virtual void	DrawPathToOutputDevice (Path *PathToRender, PathShape shapePath)
	Output all the commands required to render this path to the EPS file.
void	ExportPath (Path *DrawPath, BOOL DataOnly, BOOL PureDataOnly=FALSE)
	Output all the commands required to render this path to the EPS file. If this is a compound path, the stroke/fill operators will always be output, regardless of the value of the DataOnly parameter.
virtual void	GetValidPathAttributes ()
	Ensure the EPS context has the correct attributes for drawing paths. This required because when the path attributes change, we don't output the EPS commands to reflect this straight away - we set a flag to indicate that the attributes have changed, and then when this function is called, it notices that the attributes have changed, and outputs the EPS commands to select these attributes. This avoids redundant and copious attribute code in our EPS files. (The flags used are ValidPen and FillFlags.ValidGeometry).
virtual void	GetValidTextAttributes ()
	Text equivalent of GetValidPathAttributes().
virtual void	GetRenderRegionCaps (RRCaps *pCaps)
	This function allows render regions to admit to what they can and can not render. This allows other areas of the program to come in and help render regions out in some situations, if they are unable to render everything. eg. an OSRenderRegion can not render transparancy.
virtual BOOL	WantsGrids ()
	This function is designed to help with the rendering of grids, as they are not always wanted (eg xara eps). EPS classes generally do not want to render grids. The ones that do (NativeEPS) should replace this with a version that returns TRUE.
virtual BOOL	WriteNewLine (void)
	Outputs a new line tag to the file.
virtual void	SetClipRegion (ClipRegionAttribute *pClipAttr, BOOL Temp)
	Shrink the RR's clipping region to the region defined by pClipAttr. We do this by: 1. Recording a save-state command. 2. Exporting a description of the clipping path in pClipAttr. 3. Recording a 'clip-to-last-path' command. 4. Recording a 'start-new-path' command, as we don't want our clip-path to get stroked or rendered in any way.
virtual void	RestoreClipRegion (ClipRegionAttribute *pClipAttr, BOOL Temp)
	Restore the RR's clipping region. We do this by recording a restore-state command.
Protected Member Functions
virtual void	OutputFontName (void)
	Output an Illustrator format fontname and pointsize token. The format is /_fontname[-Bold|-Italic|-BoldItalic] pointsize Tf. EncodeFontName will generate this format from an internal fontname. DocodeFontName will return an internal format fontname and flags where nec.
INT32	GetFontStyle (void)
	Compile the current style attributes.
virtual BOOL	WriteEPSVersion (void)
	Writes the EPS version used by this particular file type.
virtual BOOL	WriteEPSBoundingBox (void)
	Writes an EPS bounding box.
virtual BOOL	WriteEPSProcessColours (void)
	Does nothing - process colours are only relevant in AI files.
virtual BOOL	WriteEPSResources (EPSFilter *pFilter, Document *pDocument)
	This is a stub function, that's over-loaded in the AIEPS render region. It's used to write out the necessary resources for an AI file.
virtual BOOL	WriteEPSProlog (EPSFilter *pFilter, Document *pDocument)
	This is a stub function, that's over-loaded in the AIEPS render region. It's used to write out the necessary Prolog script for an AI file.
virtual BOOL	WriteEPSTrailerComments (void)
	Writes the comments out at the end of an EPS file.
virtual BOOL	WriteProlog (KernelDC *)
	Output any PostScript prolog for this render region. For EPS and printing, this means output of our PostScript rendering procedures; for Native files we do nothing.
virtual BOOL	WriteSetup (KernelDC *)
	Output any PostScript setup for this render region. For EPS and printing, this means output of our PostScript code to initialise the context for rendering; for Native files we do nothing.
virtual BOOL	WriteSepTables (KernelDC *)
	Output the current set of device printer profiles as Postscript data arrays. Our Postscript prolog functions will use these arrays when creating separations. (if we are not separating, we do nothing).
virtual BOOL	WriteSepFunctions (KernelDC *)
	Output the current set of separation functions for this EPS file if any. These will usually be present in printable postscript versions of EPS render regions.
BOOL	SetLastOutputAttribute (INT32 AttrID)
	Check to see if the current attribute is the same as the last one that was output in EPS.
void	ResetOutputAttributes (void)
	Resets the attribute array so that all attributes are considered to be invalidated - i.e. the next time an attribute is needed, it will always be output, regardless of whether the last attribute output was the same as it. This is mainly used for PostScript printing when we use the OS to do text, because we cannot be sure of how the OS will leave the graphics state after doing text output, so we assume nothing, and reset all required attributes after doing text output via the OS.
virtual BOOL	WriteFileVersion (KernelDC *)
	This allows the filter to save out a comment line giving file version information. At present, in anything but Native format, it does nothing.
virtual BOOL	WriteCompressionState (KernelDC *)
	This starts the compression process. Called just after we output the document information so that this is not compressed and the galleries can access it easily. In this baseclass version we do nothing as compression would be a very bad thing.
virtual BOOL	WriteEndCompressionState (KernelDC *)
	This is called once almost everything has been output, just before we output the EOF and we fix the EPS header. In this baseclass version we do nothing as compression would be a very bad thing.
virtual BOOL	WriteGradientFills (Document *pDocument)
	This function is a stub function, which is overwritten in the AI render region.
virtual BOOL	WriteDocumentSetup (Document *pDocument, EPSFilter *pFilter)
	Browse through the tree, and if a text story is found invoke the document setup function. By only exporting the font setup when necessary, the file size produced is smaller (which makes it easier for me to interpret :) ), and it should hopefully make the filter run a bit faster too.
virtual BOOL	EndLayer (void)
	If there is an existing layer, it writes the end of layer tags, before creating a new layer record.
ColourPlate *	GetOutputColourPlate (ColourModel ColModel)
void	GetOutputColourPlate (ColourModel ColModel, ColourContext **ppContext, ColourPlate **ppPlate)
	This render region is associated with a document view. This function retrieves the colour context from this view and returns it along with a plate (if available). ColourModel is used to determin which plate to return from the context. If there is no view pContext and pPlate will be NULL. If there is no context in the view both return values will be NULL If there is a context but no plate attached to it, one can assume the current render action is not separated.
virtual void	OutputWindingRule ()
	Output winding rule token to the EPS file.
virtual void	OutputStrokeColour ()
	Output a stroke colour. This calls either OutputStrokeRGBcolour or OutputStrokeCMYKColour depending on the colour model.
virtual void	OutputLineWidth ()
	Output the standard line width token and measure for EPS.
virtual void	OutputJoinType ()
	Output the standard EPS join type.
virtual void	OutputDashPatternInit ()
	Sets up the next dash pattern for output.
virtual void	OutputDashPattern ()
	Output the current dash pattern settings. Watch for interaction with line widths, a change of line width causes the dash pattern to become invalid. To output a dash pattern correctly, use the following code.
virtual void	OutputStartCap ()
	Output the start cap setting using the usual 'J' EPS token.
virtual void	OutputMitreLimit ()
	Output the current mitre limit value using the usual 'M' EPS token.
virtual void	OutputFillColour ()
	This now delegates the output to either OutputFillRGBColour or OutputFillCMYKColour, depending on the colour model used.
virtual void	OutputStrokeRGBColour ()
	Output the current stroke colour as RGB. This function will use one of the following EPS tokens XA - if not separating and colour is unnamed XX - if not separating and colour is named G - if separating.
virtual void	OutputFillRGBColour ()
	Output the current fill colour as RGB. This function will use one of the following EPS tokens Xa - if not separating and colour is unnamed Xx - if not separating and colour is named g - if separating.
virtual void	OutputStrokeCMYKColour ()
	Output the current stroke colour. This function will use one of the following EPS tokens K - if not separating and colour is unnamed X - if not separating and colour is named G - if separating.
virtual void	OutputFillCMYKColour ()
	Output the current fill colour in CMYK mode. This function will use one of the following EPS tokens k - if not separating and colour is unnamed x - if not separating and colour is named g - if separating.
virtual void	OutputTextRenderMode ()
	Output the change in the text's Render Mode (Tr) - this happens when the text's fill or line colour changes to or from blank, see-through colour.
virtual void	OutputTextAspectRatio ()
	Output the change in the text's aspect ratio (Tx).
virtual void	OutputTextTracking ()
	Output the change in the tracking (Tt).
virtual void	OutputTextJustification ()
	Output the change in the text justification (Ta).
virtual void	OutputTextLineSpacing ()
	Output the change in the line spacing (Tl).
virtual void	OutputTextBaselineShift ()
	Output the change in Baseline shift (Ts).
virtual void	OutputTextSubSuperScript ()
	Output the change in the Sub/Super script attribute (Ts).
virtual void	WriteGradientFillInstance ()
	This function allows extra work to be done on gradient fills, when the fill and/or stroke operators are written. i.e. at the last possible moment before rendering.
Protected Attributes
BOOL	ValidPen
CCLexFile *	ExportFile
TCHAR *	CreatorString
RRCaps	Caps
BOOL	m_bValidPathAttrs
BOOL	m_bValidTextAttrs
Friends
class	NodeBitmap

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Detailed Description

Encapsulates an EPS render region. This is used to export EPS files from Camelot. This class is specifically for Adobe Illustrator EPS files, although other EPS filters may derive their render region from this one.

Author:

Tim_Browse (Xara Group Ltd) <camelotdev@xara.com>

Date:

13/10/93

Definition at line 125 of file saveeps.h.

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Constructor & Destructor Documentation

EPSRenderRegion::EPSRenderRegion (  DocRect  ClipRect, Matrix  ConvertMatrix, FIXED16  ViewScale )

Constructor for an EPSOutputFilter object. The object should be initialised before use. Author: Tim_Browse (Xara Group Ltd) <camelotdev@xara.com> Date: 28/10/93 See also: EPSOutputFilter::Init Definition at line 157 of file saveeps.cpp. : VectorFileRenderRegion(ClipRect, ConvertMatrix, ViewScale) { ValidPen = FALSE; CreatorString = _T("Adobe Illustrator 3.0 (exported by Camelot)"); ExportFile = NULL; m_bValidPathAttrs = TRUE; m_bValidTextAttrs = TRUE; }

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Member Function Documentation

BOOL EPSRenderRegion::AttachDevice (  View *  pView, CNativeDC *  pDC, Spread *  pSpread, bool  fOwned = false )  [virtual]

Attach the EPS render region to a device context and a spread to export. Author: Tim_Browse (Xara Group Ltd) <camelotdev@xara.com> Date: 30/03/94 Parameters: pView  - the view to attach this region to - ignored (must be NULL). [INPUTS] pDC - the device context to attach the render region to. pSpread - the spread to attach the render region to. See also: RenderRegion::AttachDevice; EPSExportDC Reimplemented from RenderRegion. Definition at line 212 of file saveeps.cpp. { // Sanity checks // ENSURE(pView == NULL, "Bad window pointer in EPSRenderRegion::AttachDevice"); // Call the base class first if (!RenderRegion::AttachDevice(pView, pDC, pSpread)) return FALSE; // Save the first node we need to export. // CurrentRenderState = pSpread->FindFirstForExport(this, FALSE); // Get a pointer to the CCDiskFile object EPSExportDC* pEPSDC = (EPSExportDC*) CCDC::ConvertFromNativeDC(pDC); ExportFile = pEPSDC->ExportFile; // All okey dokey return TRUE; }

BOOL EPSRenderRegion::CloseDown (   )  [virtual]

Tells the EPS render region that all rendering is finished and the region is about to be shut down, so it should output any trailer etc that is required. Author: Tim_Browse (Xara Group Ltd) <camelotdev@xara.com> Date: 05/09/95 Returns: TRUE if region was shut down ok; FALSE if not. Reimplemented from RenderRegion. Reimplemented in PrintPSRenderRegion. Definition at line 438 of file saveeps.cpp. { // Close down any active layers. EndLayer (); // Write out the trailer. WriteEPSTrailerComments (); return TRUE; }

void EPSRenderRegion::DrawPathToOutputDevice (  Path *  DrawPath, PathShape  shapePath )  [virtual]

Output all the commands required to render this path to the EPS file. Author: Tim_Browse (Xara Group Ltd) <camelotdev@xara.com> Date: 30/03/94 Parameters: DrawPath  - the path to render. [INPUTS] See also: RenderRegion::DrawPath; EPSRenderRegion::GetValidPathAttributes EPSRenderRegion::ExportPath Implements RenderRegion. Reimplemented in CamelotEPSRenderRegion. Definition at line 1681 of file saveeps.cpp. { // ChrisG - 26/10/00 Only export paths if they have any co-ordinates - Exporting // paths with no co-ords causes no end of hassle in the ExportPath function below, // where they are used as controls for while loops, positions in arrays (but with // one subtracted), etc... if (DrawPath->GetNumCoords ()) { // If we are not drawing complex shapes and this shape is, then return if ((!RenderComplexShapes) && (TestForComplexShape(&Caps))) return; ExportPath(DrawPath, FALSE); // Now do the arrow heads if the render region can't do them directly // -- But only draw arrow heads if the path is "stroked" if (DrawPath->IsStroked && !Caps.ArrowHeads) { // Doesn't support arrow heads directly so we render them as paths. DrawPathArrowHeads(DrawPath->GetCoordArray(), DrawPath->GetVerbArray(), DrawPath->GetNumCoords()); } } }

BOOL EPSRenderRegion::EndLayer (  void   )  [protected, virtual]

If there is an existing layer, it writes the end of layer tags, before creating a new layer record. Author: Graeme_Sutherland (Xara Group Ltd) <camelotdev@xara.com> Date: 11/4/00 Parameters: -  [INPUTS] Returns: TRUE - Success. FALSE - An error occured. See also: AIEPSRenderRegion::EndLayer () Reimplemented in AIEPSRenderRegion. Definition at line 2141 of file saveeps.cpp. { // Don't do anything. return TRUE; }

void EPSRenderRegion::ExportPath (  Path *  DrawPath, BOOL  DataOnly, BOOL  PureDataOnly = FALSE )

Output all the commands required to render this path to the EPS file. If this is a compound path, the stroke/fill operators will always be output, regardless of the value of the DataOnly parameter. Author: Tim_Browse (Xara Group Ltd) <camelotdev@xara.com> Date: 30/03/94 Parameters: DrawPath  - the path to render. [INPUTS] DataOnly - if TRUE, only output the line/curve/moveto data, and not the stroke or fill operators. if FALSE, just output path normally. NB. see Purpose PureDataOnly if TRUE, will do what the DataOnly flag does, but will really do it, instead of bottling out on compound paths! Hello, Karim here. The above is is *no longer the case* if the PureDataOnly flag is set. I *don't want any* stroke or fill operators on compound clipping paths, thankyou very much! See also: RenderRegion::DrawPath; EPSRenderRegion::GetValidPathAttributes Definition at line 1732 of file saveeps.cpp. { // Only change data if we have actually have data to change if (!PureDataOnly) { // Make sure we draw in the right colours GetValidPathAttributes(); } // Get the device context for our export file. KernelDC *pDC = (KernelDC*)CCDC::ConvertFromNativeDC(RenderDC); DocCoord* Coords = DrawPath->GetCoordArray(); PathVerb* Verbs = DrawPath->GetVerbArray(); INT32 NumCoords = DrawPath->GetNumCoords(); // Position we are reading points from INT32 ReadPos = 1; // Check to see if this is a compound path. If it is, there will be more than one // moveto command. BOOL CompoundPath = FALSE; while (ReadPos < NumCoords) { // Find out the type of element that we are over (after the close flag has been removed) if (((Verbs[ReadPos]) & (~PT_CLOSEFIGURE) ) == PT_MOVETO) { // This is a compound path - stop searching for moveto's. CompoundPath = TRUE; break; } // Try next point ReadPos++; } // Karim 24/05/2000 - don't want this bracket data if the PureDataOnly flag is set. if (CompoundPath && !PureDataOnly) { // Bracket compound paths./ pDC->OutputToken(_T("*u")); pDC->OutputNewLine(); } // Work out how to render the path (stroke, fill, both, none, etc.) TCHAR PathTypeOpen[2] = _T("N"); TCHAR PathTypeClosed[2]; // Work out if the path is filled. BOOL IsFilled = TRUE; ColourFillAttribute *pFillAttr = (ColourFillAttribute *) CurrentAttrs[ATTR_FILLGEOMETRY].pAttr; if (pFillAttr->IsKindOf(CC_RUNTIME_CLASS(FlatFillAttribute)) && pFillAttr->Colour.IsTransparent()) { // Flat fill with transparent colour => no fill IsFilled = FALSE; } if (!DrawPath->IsFilled) IsFilled = FALSE; // Work out what should be done to the path if (RR_STROKECOLOUR().IsTransparent() || !DrawPath->IsStroked) { if (IsFilled) // Fill path PathTypeOpen[0] = 'F'; } else { if (IsFilled) // Stroke and fill path PathTypeOpen[0] = 'B'; else // Stroke path, leaving it unfilled PathTypeOpen[0] = 'S'; } // make closed varity of PathType PathTypeClosed[0] = camTolower(PathTypeOpen[0]); PathTypeClosed[1] = '\0'; // Reset to start of path ReadPos = 0; // loop through the whole path while(ReadPos < NumCoords) { // Find out the type of element that we are over (after the close flag has been removed) // Coord P[4]; switch ( (Verbs[ReadPos]) & (~PT_CLOSEFIGURE) ) { case PT_MOVETO: // If this is in the middle of the path, specify how this sub-path // should be rendered - this is needed so that we re-import all the flags // correctly on complex paths (e.g. PT_CLOSEFIGURE) // Karim 25/05/2000 - changed so we don't output this stroking token if PureDataOnly. if (ReadPos > 0 && !PureDataOnly) { pDC->OutputToken(((Verbs[ReadPos - 1] & PT_CLOSEFIGURE) != 0)?PathTypeClosed:PathTypeOpen); pDC->OutputNewLine(); } // Output the moveto command pDC->OutputCoord(Coords[ReadPos]); pDC->OutputToken(TEXT("m")); pDC->OutputNewLine(); ReadPos++; break; case PT_LINETO: // Output the lineto command pDC->OutputCoord(Coords[ReadPos]); pDC->OutputToken(TEXT("l")); pDC->OutputNewLine(); ReadPos++; break; case PT_BEZIERTO: // If this point is a bezier, then the next 2 points should be beziers to ENSURE((Verbs[ReadPos+1]) & (~PT_CLOSEFIGURE), "Bezier found with 1 point"); ENSURE((Verbs[ReadPos+2]) & (~PT_CLOSEFIGURE), "Bezier found with 2 points"); // Make sure that this is not at the start of the path ENSURE(ReadPos > 0, "Broken path found while exporting EPS" ); // Output the moveto command pDC->OutputCoord(Coords[ReadPos]); pDC->OutputCoord(Coords[ReadPos+1]); pDC->OutputCoord(Coords[ReadPos+2]); pDC->OutputToken(TEXT("c")); pDC->OutputNewLine(); ReadPos += 3; break; default: ENSURE( FALSE, "We found a Path Element that does not exist!" ); break; } } // Karim 24/05/2000 - if PureDataOnly is specified, then we *really* don't want to render here! if (!PureDataOnly && (!DataOnly || CompoundPath)) { // Write out any additional info it's a gradient fill. if (pFillAttr->IsAGradFill ()) { WriteGradientFillInstance (); } // Do the final (or possibly only) render command pDC->OutputToken(((Verbs[NumCoords - 1] & PT_CLOSEFIGURE) != 0)?PathTypeClosed:PathTypeOpen); pDC->OutputNewLine(); } // Karim 24/05/2000 - don't want this bracket data if the PureDataOnly flag is set. if (CompoundPath && !PureDataOnly) { // End compound path pDC->OutputToken(_T("*U")); pDC->OutputNewLine(); } }

INT32 EPSRenderRegion::GetFontStyle (  void   )  [protected]

Compile the current style attributes. Author: Mike_Kenny (Xara Group Ltd) <camelotdev@xara.com> Date: 18/4/95 Definition at line 622 of file saveeps.cpp. { INT32 Style = 0; if (RR_TXTBOLD()) Style+=1; if (RR_TXTITALIC()) Style+=2; return Style; }

void EPSRenderRegion::GetOutputColourPlate (  ColourModel  ColModel, ColourContext **  pContext, ColourPlate **  pPlate )  [protected]

This render region is associated with a document view. This function retrieves the colour context from this view and returns it along with a plate (if available). ColourModel is used to determin which plate to return from the context. If there is no view pContext and pPlate will be NULL. If there is no context in the view both return values will be NULL If there is a context but no plate attached to it, one can assume the current render action is not separated. Author: Mike_Kenny (Xara Group Ltd) <camelotdev@xara.com> Date: 17/06/96 Parameters: The  colour model of the active output context to use. [INPUTS] A pointer to a pointer to a colour context (can be NULL) A pointer to a pointer to a colour plate (again can be NULL) pContext  points to the current context in the view attached to this render region [OUTPUTS] pPlate points to the plate whose model was required. Returns: - Definition at line 1646 of file saveeps.cpp. { ColourContext *pCurContext=NULL; ColourPlate *pCurPlate=NULL; // Get the render region view and find its local CMYK colour context View* pCurrView = GetRenderView(); if (pCurrView!=NULL) pCurContext = pCurrView->GetColourContext(ColModel, TRUE); // If we have a context, check for mono output. if (pCurContext!=NULL) pCurPlate = pCurContext->GetColourPlate(); // Set return vars if (pContext!=NULL) (*pContext) = pCurContext; if (pPlate!=NULL) (*pPlate) = pCurPlate; }

ColourPlate* EPSRenderRegion::GetOutputColourPlate (  ColourModel  ColModel  )  [protected]

void EPSRenderRegion::GetRenderRegionCaps (  RRCaps *  pCaps  )  [virtual]

This function allows render regions to admit to what they can and can not render. This allows other areas of the program to come in and help render regions out in some situations, if they are unable to render everything. eg. an OSRenderRegion can not render transparancy. Author: Tim_Browse (Xara Group Ltd) <camelotdev@xara.com> Date: 10/4/95 Parameters: pCaps  - The details about what types of thing this render region can render [OUTPUTS] Reimplemented from RenderRegion. Reimplemented in CamelotEPSRenderRegion, and NativeRenderRegion. Definition at line 2435 of file saveeps.cpp. { // This forces line attributes - dash patterns and arrow heads to be output // properly for EPS, rather than using Camelot 'shorthand' tokens. pCaps->CanDoNothing(); pCaps->ClippedOutput = TRUE; }

void EPSRenderRegion::GetValidPathAttributes (   )  [virtual]

Ensure the EPS context has the correct attributes for drawing paths. This required because when the path attributes change, we don't output the EPS commands to reflect this straight away - we set a flag to indicate that the attributes have changed, and then when this function is called, it notices that the attributes have changed, and outputs the EPS commands to select these attributes. This avoids redundant and copious attribute code in our EPS files. (The flags used are ValidPen and FillFlags.ValidGeometry). Author: Tim_Browse (Xara Group Ltd) <camelotdev@xara.com> (Will) Date: 30/03/94 Reimplemented in ArtWorksEPSRenderRegion, CamelotEPSRenderRegion, and NativeRenderRegion. Definition at line 1011 of file saveeps.cpp. { // Path stroking. Do nothing if the stroke is transparent. // Note, if this changes you MUST investigate and change GetValidTextAttributes // cause this needs to output transparent stroke colours. if (SetLastOutputAttribute(ATTR_WINDINGRULE) || !m_bValidPathAttrs) { OutputWindingRule (); } if (!RR_STROKECOLOUR().IsTransparent()) { if (SetLastOutputAttribute(ATTR_STROKECOLOUR) || !m_bValidPathAttrs) OutputStrokeColour(); } if (SetLastOutputAttribute(ATTR_LINEWIDTH) || !m_bValidPathAttrs) OutputLineWidth(); if (SetLastOutputAttribute(ATTR_JOINTYPE) || !m_bValidPathAttrs) OutputJoinType(); // Set up the dash pattern first. OutputDashPatternInit(); if (SetLastOutputAttribute(ATTR_DASHPATTERN) || !m_bValidPathAttrs) OutputDashPattern(); if (SetLastOutputAttribute(ATTR_STARTCAP) || !m_bValidPathAttrs) OutputStartCap(); if (SetLastOutputAttribute(ATTR_MITRELIMIT) || !m_bValidPathAttrs) OutputMitreLimit(); // Path filling if (!RR_FILLCOLOUR().IsTransparent()) { if (SetLastOutputAttribute(ATTR_FILLGEOMETRY) || !m_bValidPathAttrs) OutputFillColour(); } // The path attributes must be valid (as we've just written them). m_bValidPathAttrs = TRUE; }

void EPSRenderRegion::GetValidTextAttributes (   )  [virtual]

Text equivalent of GetValidPathAttributes(). Author: Chris_Snook (Xara Group Ltd) <camelotdev@xara.com> Date: 30/03/94 Reimplemented in NativeRenderRegion. Definition at line 643 of file saveeps.cpp. { // Illustrator does not specify a token for changing // -fontsize // -bold // -italic // We need to use the standard Tf token. (see OutputFontName) BOOL FontOut = FALSE; if (SetLastOutputAttribute(ATTR_TXTFONTTYPEFACE)) { FontOut=TRUE; } if (SetLastOutputAttribute(ATTR_TXTFONTSIZE)) { FontOut=TRUE; } if (SetLastOutputAttribute(ATTR_TXTBOLD)) { FontOut=TRUE; } if (SetLastOutputAttribute(ATTR_TXTITALIC)) { FontOut=TRUE; } if (!m_bValidTextAttrs) { FontOut = TRUE; } // ok check whether a font change needs generating if (FontOut) OutputFontName(); BOOL FillNLine = FALSE; if (SetLastOutputAttribute(ATTR_STROKECOLOUR)) { FillNLine = TRUE; } if (SetLastOutputAttribute(ATTR_FILLGEOMETRY)) { FillNLine = TRUE; } if (!m_bValidTextAttrs) { FillNLine = TRUE; } // Text Render mode needs changing as Text has gained or lost fill and/or // line colours if (FillNLine) { OutputTextRenderMode (); } if (SetLastOutputAttribute(ATTR_TXTASPECTRATIO) || !m_bValidTextAttrs) { OutputTextAspectRatio (); } if (SetLastOutputAttribute(ATTR_TXTTRACKING) || !m_bValidTextAttrs) { OutputTextTracking (); } if (SetLastOutputAttribute(ATTR_TXTJUSTIFICATION) || !m_bValidTextAttrs) { OutputTextJustification (); } // BODGE TEXT - should this be output before any lines rather than on a line // by line basis? if (SetLastOutputAttribute(ATTR_TXTLINESPACE) || !m_bValidTextAttrs) { OutputTextLineSpacing (); } if (SetLastOutputAttribute(ATTR_TXTBASELINE) || !m_bValidTextAttrs) { OutputTextBaselineShift (); } if (SetLastOutputAttribute(ATTR_TXTSCRIPT) || !m_bValidTextAttrs) { OutputTextSubSuperScript (); } // The text attributes are now Definitely valid (as we've just written all of them) m_bValidTextAttrs = TRUE; }

BOOL EPSRenderRegion::Init (  void   )

Initialise an EPSOutputFilter object. Author: Tim_Browse (Xara Group Ltd) <camelotdev@xara.com> Date: 28/10/93 Returns: TRUE if the filter was initialised ok, FALSE otherwise. Errors: Will fail if not enough memory to initialise the EPS stack. See also: EPSStack Reimplemented from VectorFileRenderRegion. Definition at line 182 of file saveeps.cpp. { // Initialise all member variables. ValidPen = FALSE; LastOutputAttrs = NULL; ExportFile = NULL; CreatorString = NULL; m_bValidPathAttrs = TRUE; m_bValidTextAttrs = TRUE; // All ok return TRUE; }

BOOL EPSRenderRegion::InitDevice (   )  [virtual]

Initialise the device specific mechanisms for this render region. Author: Tim_Browse (Xara Group Ltd) <camelotdev@xara.com> Date: 09/05/95 Returns: TRUE if the device context is initialised ok; FALSE if not. Errors: Same as base class. See also: RenderRegion::InitDevice Reimplemented from RenderRegion. Reimplemented in PrintPSRenderRegion. Definition at line 247 of file saveeps.cpp. { // Call base class if (!RenderRegion::InitDevice()) return FALSE; // Set the render caps up GetRenderRegionCaps(&Caps); // Buffer used to build up the %%For and %%CreationDate comments. TCHAR buf[300]; // Find out which document we're using ENSURE(RenderView->GetDoc() != NULL, "View's document is NULL!"); Document *TheDocument = RenderView->GetDoc(); KernelDC *pDC = (KernelDC*)CCDC::ConvertFromNativeDC(RenderDC); // Output the standard EPS header affair... WriteEPSVersion (); // Name of program that created this file. pDC->OutputToken ( _T("%%Creator:") ); pDC->OutputToken ( CreatorString ); pDC->OutputNewLine (); // File version saving. In anything but Native format does nothing WriteFileVersion ( pDC ); // Output the %%For comment camSprintf(buf, _T("%%%%For: (%s) (%s)"), ReleaseInfo::GetLicensee(), ReleaseInfo::GetCompany()); pDC->OutputToken(buf); pDC->OutputNewLine(); // The title of the picture String_256 DocumentTitle = TheDocument->GetTitle(); camSprintf(buf, _T("%%%%Title: (%s)"), (TCHAR *) DocumentTitle); pDC->OutputToken(buf); pDC->OutputNewLine(); // Date this file was created. time_t Now; time(&Now); struct tm *pNow = localtime(&Now); #if 1 char buf2[100]; strftime(buf2, 100, "%%%%CreationDate: (%d/%m/%y) (%I:%M %p)", pNow); INT32 i=0; char c; do { c=buf2[i]; buf[i]=c; // 1:1 char/TCHAR conversion i++; } while (c); #else _tcsftime(buf, 100, "%%%%CreationDate: (%d/%m/%y) (%I:%M %p)", pNow); #endif pDC->OutputToken(buf); pDC->OutputNewLine(); // Bounding box. WriteEPSBoundingBox (); // Get a handle to our filter EPSExportDC *pExportDC = (EPSExportDC *) pDC; EPSFilter *pFilter = (EPSFilter *) pExportDC->GetParentFilter(); // Write out the document's process colours. (Only for AIEPS.) WriteEPSProcessColours (); // Write out the Documents fonts TheDocument->WriteEPSFonts ( pFilter ); // Write out the Documents resources WriteEPSResources ( pFilter, TheDocument ); // Write out the Documents comments TheDocument->WriteEPSComments ( pFilter ); // We can say compress this file if native. // We will leave the document comments in so that things like the clipart gallery // can still easily access this useful information. // // Compressed saving. In anything but Native format does nothing WriteCompressionState ( pDC ); // Get all the document components to output their header comments (if any) DocComponent *pComponent = TheDocument->EnumerateDocComponents ( NULL ); while (pComponent != NULL) { // Inform this document component that we are about to start an EPS export. pComponent->WriteEPSComments(pFilter); // Look for next doc component pComponent = TheDocument->EnumerateDocComponents(pComponent); } // No more comments pDC->OutputToken ( _T("%%EndComments") ); pDC->OutputNewLine (); // Do the prolog... pDC->OutputToken ( _T("%%BeginProlog") ); pDC->OutputNewLine (); // Do the render region specific prolog. WriteProlog ( pDC ); // Write out the document,s Prolog script. WriteEPSProlog ( pFilter, TheDocument ); // and the doc components prolog pComponent = TheDocument->EnumerateDocComponents(NULL); while (pComponent != NULL) { // Get this document component to write its EPS prolog out to the file. pComponent->WriteEPSProlog(pFilter); // Look for next doc component pComponent = TheDocument->EnumerateDocComponents(pComponent); } pDC->OutputToken(_T("%%EndProlog")); pDC->OutputNewLine(); // Do the setup... pDC->OutputToken(_T("%%BeginSetup")); pDC->OutputNewLine(); // Do the render region specific setup. WriteSetup ( pDC ); // Write out the font definition. WriteDocumentSetup ( TheDocument, pFilter ); // and the components setup pComponent = TheDocument->EnumerateDocComponents(NULL); while (pComponent != NULL) { // Get this document component to write its EPS setup out to the file. pComponent->WriteEPSSetup(pFilter); // Look for next doc component pComponent = TheDocument->EnumerateDocComponents(pComponent); } // Parse through the tree, locate the gradient fills, and write them out // to the file. WriteGradientFills ( TheDocument ); // Wrap up the header section pDC->OutputToken(_T("%%EndSetup")); pDC->OutputNewLine(); // We are into the main script of the EPS file here, so give the // doc components one last chance to write something out pComponent = TheDocument->EnumerateDocComponents(NULL); while (pComponent != NULL) { // Get this document component to write its EPS Script data to the file pComponent->WriteScript(pFilter); // Look for next doc component pComponent = TheDocument->EnumerateDocComponents(pComponent); } // Set up render region InitClipping (); // All ok return TRUE; }

void EPSRenderRegion::OutputDashPattern (   )  [protected, virtual]

Output the current dash pattern settings. Watch for interaction with line widths, a change of line width causes the dash pattern to become invalid. To output a dash pattern correctly, use the following code. Author: Mike_Kenny (Xara Group Ltd) <camelotdev@xara.com> Date: 3/7/96 OutputDashPatternInit(); if (SetLastOutputAttribute(ATTR_DASHPATTERN)) OutputDashPattern(); See also: OutputDashPatternInit(); Reimplemented in AIEPSRenderRegion. Definition at line 1173 of file saveeps.cpp. { KernelDC *pDC = (KernelDC*)CCDC::ConvertFromNativeDC(RenderDC); // Set dash pattern INT32 NumEls = RR_DASHPATTERN().Elements; INT32* TempArray = NULL; // If the dash patterns need scaling, then we need to scale them // here, as Illustrator format uses absolute sizes for the dash // patterns, rather than the 'relative to line width' that we use // INT32 DashLineWidth = RR_DASHPATTERN().LineWidth; INT32 LineWidth = RR_LINEWIDTH(); BOOL DoScale = RR_DASHPATTERN().ScaleWithLineWidth; FIXED16 Scale = DoScale ? (double(LineWidth) / double(RR_DASHPATTERN().LineWidth)) : 1; // Don't bother with zero width lines if (LineWidth == 0) NumEls = 0; // But we needn't bother if there are no elements if (NumEls > 0) { INT32* DashArray = RR_DASHPATTERN().ElementData; TempArray = new INT32[NumEls]; if (TempArray) { for (INT32 el=0; el<NumEls; el++) { TempArray[el] = LongMulFixed16(DashArray[el], Scale); if (TempArray[el] == 0) { // Found a zero dash element - this line is obviously too small // to bother with dash patterns. NumEls = 0; break; } } } } // Output the (possibly scaled) array of On-Off distances pDC->OutputArray(TempArray, NumEls); // Delete the temp buffer if necessary delete TempArray; // Also scale the Dash Start Offset if need be INT32 Offset = LongMulFixed16(RR_DASHPATTERN().DashStart, Scale); pDC->OutputUserSpaceValue(Offset); pDC->OutputToken(_T("d")); pDC->OutputNewLine(); }

void EPSRenderRegion::OutputDashPatternInit (   )  [protected, virtual]

Sets up the next dash pattern for output. Author: Mike_Kenny (Xara Group Ltd) <camelotdev@xara.com> Date: 3/7/96 See also: OutputDashPattern() Notes: Special code for dash patterns, as they are affected by another attribute, which is line width, so we need to watch out for this by checking the base class 'StrokeFlags' variable (a change of line width automatically causes the dash pattern flag to be invalidated). Definition at line 1138 of file saveeps.cpp. { if (!StrokeFlags.ValidDashPattern && (RR_DASHPATTERN().Elements > 0)) { // Delete the attribute if necessary if (LastOutputAttrs[ATTR_DASHPATTERN].Temp) delete LastOutputAttrs[ATTR_DASHPATTERN].pAttr; // Set to NULL to force it to be output by SetLastOutputAttribute() LastOutputAttrs[ATTR_DASHPATTERN].pAttr = NULL; } // Don't do this again until we need to. StrokeFlags.ValidDashPattern = TRUE; }