1 /*

     2  * (C) Copyright IBM Corp. 1998 - 2005 - All Rights Reserved

     3  *

     4  */

     5 

     6 #include "LETypes.h"

     7 #include "OpenTypeTables.h"

     8 #include "GlyphPositioningTables.h"

     9 #include "CursiveAttachmentSubtables.h"

    10 #include "AnchorTables.h"

    11 #include "GlyphIterator.h"

    12 #include "OpenTypeUtilities.h"

    13 #include "LESwaps.h"

    14 

    15 U_NAMESPACE_BEGIN

    16 

    17 le_uint32 CursiveAttachmentSubtable::process(GlyphIterator *glyphIterator, const LEFontInstance *fontInstance) const

    18 {

    19     LEGlyphID glyphID       = glyphIterator->getCurrGlyphID();

    20     le_int32  coverageIndex = getGlyphCoverage(glyphID);

    21     le_uint16 eeCount       = SWAPW(entryExitCount);

    22 

    23     if (coverageIndex < 0 || coverageIndex >= eeCount) {

    24         glyphIterator->setCursiveGlyph();

    25         return 0;

    26     }

    27 

    28     LEPoint entryAnchor, exitAnchor;

    29     Offset entryOffset = SWAPW(entryExitRecords[coverageIndex].entryAnchor);

    30     Offset exitOffset  = SWAPW(entryExitRecords[coverageIndex].exitAnchor);

    31 

    32     if (entryOffset != 0) {

    33         const AnchorTable *entryAnchorTable = (const AnchorTable *) ((char *) this + entryOffset);

    34 

    35         entryAnchorTable->getAnchor(glyphID, fontInstance, entryAnchor);

    36         glyphIterator->setCursiveEntryPoint(entryAnchor);

    37     }

    38 

    39     if (exitOffset != 0) {

    40         const AnchorTable *exitAnchorTable = (const AnchorTable *) ((char *) this + exitOffset);

    41 

    42         exitAnchorTable->getAnchor(glyphID, fontInstance, exitAnchor);

    43         glyphIterator->setCursiveExitPoint(exitAnchor);

    44     }

    45 

    46     return 1;

    47 }

    48 

    49 U_NAMESPACE_END