ICU-511.25.tar.gz

[apple/icu.git] / icuSources / layout / GXLayoutEngine2.cpp

diff --git a/icuSources/layout/GXLayoutEngine2.cpp b/icuSources/layout/GXLayoutEngine2.cpp
new file mode 100644 (file)
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--- /dev/null
+++ b/icuSources/layout/GXLayoutEngine2.cpp
@@ -0,0 +1,66 @@
+/*
+ *
+ * (C) Copyright IBM Corp.  and others 1998-2013 - All Rights Reserved
+ *
+ */
+
+#include "LETypes.h"
+#include "LayoutEngine.h"
+#include "GXLayoutEngine2.h"
+#include "LEGlyphStorage.h"
+#include "MorphTables.h"
+
+U_NAMESPACE_BEGIN
+
+UOBJECT_DEFINE_RTTI_IMPLEMENTATION(GXLayoutEngine2)
+
+GXLayoutEngine2::GXLayoutEngine2(const LEFontInstance *fontInstance, le_int32 scriptCode, le_int32 languageCode, const MorphTableHeader2 *morphTable, le_int32 typoFlags, LEErrorCode &success) 
+    : LayoutEngine(fontInstance, scriptCode, languageCode, typoFlags, success), fMorphTable(morphTable)
+{
+    // nothing else to do?
+}
+
+GXLayoutEngine2::~GXLayoutEngine2()
+{
+    reset();
+}
+
+// apply 'morx' table
+le_int32 GXLayoutEngine2::computeGlyphs(const LEUnicode chars[], le_int32 offset, le_int32 count, le_int32 max, le_bool rightToLeft, LEGlyphStorage &glyphStorage, LEErrorCode &success)
+{
+    if (LE_FAILURE(success)) {
+        return 0;
+    }
+
+    if (chars == NULL || offset < 0 || count < 0 || max < 0 || offset >= max || offset + count > max) {
+        success = LE_ILLEGAL_ARGUMENT_ERROR;
+        return 0;
+    }
+    
+    mapCharsToGlyphs(chars, offset, count, rightToLeft, rightToLeft, glyphStorage, success);
+
+    if (LE_FAILURE(success)) {
+        return 0;
+    }
+
+    fMorphTable->process(glyphStorage, fTypoFlags);
+    return count;
+}
+
+// apply positional tables
+void GXLayoutEngine2::adjustGlyphPositions(const LEUnicode chars[], le_int32 offset, le_int32 count, le_bool /*reverse*/,
+                                          LEGlyphStorage &/*glyphStorage*/, LEErrorCode &success)
+{
+    if (LE_FAILURE(success)) {
+        return;
+    }
+
+    if (chars == NULL || offset < 0 || count < 0) {
+        success = LE_ILLEGAL_ARGUMENT_ERROR;
+        return;
+    }
+
+    // FIXME: no positional processing yet...
+}
+
+U_NAMESPACE_END