1 files changed, 97 insertions, 0 deletions
diff --git a/Build/source/libs/icu/icu-xetex/layout/MarkToMarkPosnSubtables.cpp b/Build/source/libs/icu/icu-xetex/layout/MarkToMarkPosnSubtables.cpp
new file mode 100644
index 00000000000..3f571f5e39c
--- /dev/null
+++ b/Build/source/libs/icu/icu-xetex/layout/MarkToMarkPosnSubtables.cpp
@@ -0,0 +1,97 @@
+/*
+ *
+ * (C) Copyright IBM Corp. 1998-2005 - All Rights Reserved
+ *
+ */
+
+#include "LETypes.h"
+#include "LEFontInstance.h"
+#include "OpenTypeTables.h"
+#include "AnchorTables.h"
+#include "MarkArrays.h"
+#include "GlyphPositioningTables.h"
+#include "AttachmentPosnSubtables.h"
+#include "MarkToMarkPosnSubtables.h"
+#include "GlyphIterator.h"
+#include "LESwaps.h"
+
+U_NAMESPACE_BEGIN
+
+LEGlyphID MarkToMarkPositioningSubtable::findMark2Glyph(GlyphIterator *glyphIterator) const
+{
+    if (glyphIterator->findMark2Glyph()) {
+        return glyphIterator->getCurrGlyphID();
+    }
+
+    return 0xFFFF;
+}
+
+le_int32 MarkToMarkPositioningSubtable::process(GlyphIterator *glyphIterator, const LEFontInstance *fontInstance) const
+{
+    LEGlyphID markGlyph = glyphIterator->getCurrGlyphID();
+    le_int32 markCoverage = getGlyphCoverage((LEGlyphID) markGlyph);
+
+    if (markCoverage < 0) {
+        // markGlyph isn't a covered mark glyph
+        return 0;
+    }
+
+    LEPoint markAnchor;
+    const MarkArray *markArray = (const MarkArray *) ((char *) this + SWAPW(markArrayOffset));
+    le_int32 markClass = markArray->getMarkClass(markGlyph, markCoverage, fontInstance, markAnchor);
+    le_uint16 mcCount = SWAPW(classCount);
+
+    if (markClass < 0 || markClass >= mcCount) {
+        // markGlyph isn't in the mark array or its
+        // mark class is too big. The table is mal-formed!
+        return 0;
+    }
+
+    GlyphIterator mark2Iterator(*glyphIterator);
+    LEGlyphID mark2Glyph = findMark2Glyph(&mark2Iterator);
+    le_int32 mark2Coverage = getBaseCoverage((LEGlyphID) mark2Glyph);
+    const Mark2Array *mark2Array = (const Mark2Array *) ((char *) this + SWAPW(baseArrayOffset));
+    le_uint16 mark2Count = SWAPW(mark2Array->mark2RecordCount);
+
+    if (mark2Coverage < 0 || mark2Coverage >= mark2Count) {
+        // The mark2 glyph isn't covered, or the coverage
+        // index is too big. The latter means that the
+        // table is mal-formed...
+        return 0;
+    }
+
+    const Mark2Record *mark2Record = &mark2Array->mark2RecordArray[mark2Coverage * mcCount];
+    Offset anchorTableOffset = SWAPW(mark2Record->mark2AnchorTableOffsetArray[markClass]);
+    const AnchorTable *anchorTable = (const AnchorTable *) ((char *) mark2Array + anchorTableOffset);
+    LEPoint mark2Anchor, markAdvance, pixels;
+
+    if (anchorTableOffset == 0) {
+        // this seems to mean that the marks don't attach...
+        return 0;
+    }
+
+    anchorTable->getAnchor(mark2Glyph, fontInstance, mark2Anchor);
+
+    fontInstance->getGlyphAdvance(markGlyph, pixels);
+    fontInstance->pixelsToUnits(pixels, markAdvance);
+
+    float anchorDiffX = mark2Anchor.fX - markAnchor.fX;
+    float anchorDiffY = mark2Anchor.fY - markAnchor.fY;
+
+    glyphIterator->setCurrGlyphBaseOffset(mark2Iterator.getCurrStreamPosition());
+
+    if (glyphIterator->isRightToLeft()) {
+        glyphIterator->setCurrGlyphPositionAdjustment(anchorDiffX, anchorDiffY, -markAdvance.fX, -markAdvance.fY);
+    } else {
+        LEPoint mark2Advance;
+
+        fontInstance->getGlyphAdvance(mark2Glyph, pixels);
+        fontInstance->pixelsToUnits(pixels, mark2Advance);
+
+        glyphIterator->setCurrGlyphPositionAdjustment(anchorDiffX - mark2Advance.fX, anchorDiffY - mark2Advance.fY, -markAdvance.fX, -markAdvance.fY);
+    }
+
+    return 1;
+}
+
+U_NAMESPACE_END