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-rw-r--r--Build/source/libs/icu/icu-4.6/layout/LEFontInstance.cpp154
1 files changed, 154 insertions, 0 deletions
diff --git a/Build/source/libs/icu/icu-4.6/layout/LEFontInstance.cpp b/Build/source/libs/icu/icu-4.6/layout/LEFontInstance.cpp
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index 00000000000..eaca51a51b3
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+++ b/Build/source/libs/icu/icu-4.6/layout/LEFontInstance.cpp
@@ -0,0 +1,154 @@
+/*
+ *******************************************************************************
+ *
+ * Copyright (C) 1999-2007, International Business Machines
+ * Corporation and others. All Rights Reserved.
+ *
+ *******************************************************************************
+ * file name: LEFontInstance.cpp
+ *
+ * created on: 02/06/2003
+ * created by: Eric R. Mader
+ */
+
+#include "LETypes.h"
+#include "LEScripts.h"
+#include "LEFontInstance.h"
+#include "LEGlyphStorage.h"
+
+U_NAMESPACE_BEGIN
+
+UOBJECT_DEFINE_RTTI_IMPLEMENTATION(LEFontInstance)
+
+LECharMapper::~LECharMapper()
+{
+ // nothing to do.
+}
+
+LEFontInstance::~LEFontInstance()
+{
+ // nothing to do
+}
+
+const LEFontInstance *LEFontInstance::getSubFont(const LEUnicode chars[], le_int32 *offset, le_int32 limit,
+ le_int32 script, LEErrorCode &success) const
+{
+ if (LE_FAILURE(success)) {
+ return NULL;
+ }
+
+ if (chars == NULL || *offset < 0 || limit < 0 || *offset >= limit || script < 0 || script >= scriptCodeCount) {
+ success = LE_ILLEGAL_ARGUMENT_ERROR;
+ return NULL;
+ }
+
+ *offset = limit;
+ return this;
+}
+
+void LEFontInstance::mapCharsToGlyphs(const LEUnicode chars[], le_int32 offset, le_int32 count,
+ le_bool reverse, const LECharMapper *mapper, le_bool filterZeroWidth, LEGlyphStorage &glyphStorage) const
+{
+ le_int32 i, out = 0, dir = 1;
+
+ if (reverse) {
+ out = count - 1;
+ dir = -1;
+ }
+
+ for (i = offset; i < offset + count; i += 1, out += dir) {
+ LEUnicode16 high = chars[i];
+ LEUnicode32 code = high;
+
+ if (i < offset + count - 1 && high >= 0xD800 && high <= 0xDBFF) {
+ LEUnicode16 low = chars[i + 1];
+
+ if (low >= 0xDC00 && low <= 0xDFFF) {
+ code = (high - 0xD800) * 0x400 + low - 0xDC00 + 0x10000;
+ }
+ }
+
+ glyphStorage[out] = mapCharToGlyph(code, mapper, filterZeroWidth);
+
+ if (code >= 0x10000) {
+ i += 1;
+ glyphStorage[out += dir] = 0xFFFF;
+ }
+ }
+}
+
+LEGlyphID LEFontInstance::mapCharToGlyph(LEUnicode32 ch, const LECharMapper *mapper) const
+{
+ return mapCharToGlyph(ch, mapper, TRUE);
+}
+
+LEGlyphID LEFontInstance::mapCharToGlyph(LEUnicode32 ch, const LECharMapper *mapper, le_bool filterZeroWidth) const
+{
+ LEUnicode32 mappedChar = mapper->mapChar(ch);
+
+ if (mappedChar == 0xFFFE || mappedChar == 0xFFFF) {
+ return 0xFFFF;
+ }
+
+ if (filterZeroWidth && (mappedChar == 0x200C || mappedChar == 0x200D)) {
+ return canDisplay(mappedChar)? 0x0001 : 0xFFFF;
+ }
+
+ return mapCharToGlyph(mappedChar);
+}
+
+le_bool LEFontInstance::canDisplay(LEUnicode32 ch) const
+{
+ return LE_GET_GLYPH(mapCharToGlyph(ch)) != 0;
+}
+
+float LEFontInstance::xUnitsToPoints(float xUnits) const
+{
+ return (xUnits * getXPixelsPerEm()) / (float) getUnitsPerEM();
+}
+
+float LEFontInstance::yUnitsToPoints(float yUnits) const
+{
+ return (yUnits * getYPixelsPerEm()) / (float) getUnitsPerEM();
+}
+
+void LEFontInstance::unitsToPoints(LEPoint &units, LEPoint &points) const
+{
+ points.fX = xUnitsToPoints(units.fX);
+ points.fY = yUnitsToPoints(units.fY);
+}
+
+float LEFontInstance::xPixelsToUnits(float xPixels) const
+{
+ return (xPixels * getUnitsPerEM()) / (float) getXPixelsPerEm();
+}
+
+float LEFontInstance::yPixelsToUnits(float yPixels) const
+{
+ return (yPixels * getUnitsPerEM()) / (float) getYPixelsPerEm();
+}
+
+void LEFontInstance::pixelsToUnits(LEPoint &pixels, LEPoint &units) const
+{
+ units.fX = xPixelsToUnits(pixels.fX);
+ units.fY = yPixelsToUnits(pixels.fY);
+}
+
+void LEFontInstance::transformFunits(float xFunits, float yFunits, LEPoint &pixels) const
+{
+ pixels.fX = xUnitsToPoints(xFunits) * getScaleFactorX();
+ pixels.fY = yUnitsToPoints(yFunits) * getScaleFactorY();
+}
+
+le_int32 LEFontInstance::getLineHeight() const
+{
+ return getAscent() + getDescent() + getLeading();
+}
+
+void LEFontInstance::getKernPair(LEGlyphID leftGlyph, LEGlyphID rightGlyph, LEPoint &kern) const
+{
+ kern.fX = kern.fY = 0;
+}
+
+U_NAMESPACE_END
+