587 lines
14 KiB
C++
587 lines
14 KiB
C++
/*
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**********************************************************************
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* Copyright (C) 1998-2005, International Business Machines
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* Corporation and others. All Rights Reserved.
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**********************************************************************
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*/
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#include "LETypes.h"
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#include "LEInsertionList.h"
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#include "LEGlyphStorage.h"
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U_NAMESPACE_BEGIN
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UOBJECT_DEFINE_RTTI_IMPLEMENTATION(LEGlyphStorage)
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LEGlyphStorage::LEGlyphStorage()
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: fGlyphCount(0), fGlyphs(NULL), fCharIndices(NULL), fPositions(NULL),
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fAuxData(NULL), fInsertionList(NULL), fSrcIndex(0), fDestIndex(0)
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{
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// nothing else to do!
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}
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LEGlyphStorage::~LEGlyphStorage()
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{
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reset();
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}
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void LEGlyphStorage::reset()
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{
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fGlyphCount = 0;
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if (fPositions != NULL) {
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LE_DELETE_ARRAY(fPositions);
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fPositions = NULL;
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}
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if (fAuxData != NULL) {
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LE_DELETE_ARRAY(fAuxData);
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fAuxData = NULL;
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}
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if (fInsertionList != NULL) {
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delete fInsertionList;
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fInsertionList = NULL;
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}
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if (fCharIndices != NULL) {
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LE_DELETE_ARRAY(fCharIndices);
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fCharIndices = NULL;
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}
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if (fGlyphs != NULL) {
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LE_DELETE_ARRAY(fGlyphs);
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fGlyphs = NULL;
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}
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}
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// FIXME: This might get called more than once, for various reasons. Is
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// testing for pre-existing glyph and charIndices arrays good enough?
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void LEGlyphStorage::allocateGlyphArray(le_int32 initialGlyphCount, le_bool rightToLeft, LEErrorCode &success)
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{
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if (LE_FAILURE(success)) {
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return;
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}
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if (initialGlyphCount <= 0) {
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success = LE_ILLEGAL_ARGUMENT_ERROR;
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return;
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}
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if (fGlyphs == NULL) {
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fGlyphCount = initialGlyphCount;
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fGlyphs = LE_NEW_ARRAY(LEGlyphID, fGlyphCount);
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if (fGlyphs == NULL) {
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success = LE_MEMORY_ALLOCATION_ERROR;
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return;
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}
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}
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if (fCharIndices == NULL) {
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fCharIndices = LE_NEW_ARRAY(le_int32, fGlyphCount);
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if (fCharIndices == NULL) {
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LE_DELETE_ARRAY(fGlyphs);
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fGlyphs = NULL;
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success = LE_MEMORY_ALLOCATION_ERROR;
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return;
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}
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// Initialize the charIndices array
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le_int32 i, count = fGlyphCount, dir = 1, out = 0;
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if (rightToLeft) {
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out = fGlyphCount - 1;
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dir = -1;
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}
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for (i = 0; i < count; i += 1, out += dir) {
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fCharIndices[out] = i;
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}
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}
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if (fInsertionList == NULL) {
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// FIXME: check this for failure?
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fInsertionList = new LEInsertionList(rightToLeft);
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}
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}
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// FIXME: do we want to initialize the positions to [0, 0]?
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le_int32 LEGlyphStorage::allocatePositions(LEErrorCode &success)
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{
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if (LE_FAILURE(success)) {
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return -1;
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}
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fPositions = LE_NEW_ARRAY(float, 2 * (fGlyphCount + 1));
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if (fPositions == NULL) {
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success = LE_MEMORY_ALLOCATION_ERROR;
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return -1;
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}
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return fGlyphCount;
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}
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// FIXME: do we want to initialize the aux data to NULL?
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le_int32 LEGlyphStorage::allocateAuxData(LEErrorCode &success)
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{
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if (LE_FAILURE(success)) {
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return -1;
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}
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fAuxData = LE_NEW_ARRAY(le_uint32, fGlyphCount);
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if (fAuxData == NULL) {
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success = LE_MEMORY_ALLOCATION_ERROR;
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return -1;
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}
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return fGlyphCount;
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}
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void LEGlyphStorage::getCharIndices(le_int32 charIndices[], le_int32 indexBase, LEErrorCode &success) const
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{
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le_int32 i;
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if (LE_FAILURE(success)) {
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return;
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}
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if (charIndices == NULL) {
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success = LE_ILLEGAL_ARGUMENT_ERROR;
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return;
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}
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if (fCharIndices == NULL) {
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success = LE_NO_LAYOUT_ERROR;
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return;
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}
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for (i = 0; i < fGlyphCount; i += 1) {
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charIndices[i] = fCharIndices[i] + indexBase;
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}
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}
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void LEGlyphStorage::getCharIndices(le_int32 charIndices[], LEErrorCode &success) const
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{
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if (LE_FAILURE(success)) {
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return;
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}
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if (charIndices == NULL) {
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success = LE_ILLEGAL_ARGUMENT_ERROR;
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return;
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}
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if (fCharIndices == NULL) {
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success = LE_NO_LAYOUT_ERROR;
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return;
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}
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LE_ARRAY_COPY(charIndices, fCharIndices, fGlyphCount);
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}
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// Copy the glyphs into caller's (32-bit) glyph array, OR in extraBits
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void LEGlyphStorage::getGlyphs(le_uint32 glyphs[], le_uint32 extraBits, LEErrorCode &success) const
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{
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le_int32 i;
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if (LE_FAILURE(success)) {
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return;
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}
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if (glyphs == NULL) {
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success = LE_ILLEGAL_ARGUMENT_ERROR;
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return;
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}
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if (fGlyphs == NULL) {
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success = LE_NO_LAYOUT_ERROR;
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return;
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}
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for (i = 0; i < fGlyphCount; i += 1) {
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glyphs[i] = fGlyphs[i] | extraBits;
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}
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}
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void LEGlyphStorage::getGlyphs(LEGlyphID glyphs[], LEErrorCode &success) const
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{
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if (LE_FAILURE(success)) {
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return;
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}
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if (glyphs == NULL) {
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success = LE_ILLEGAL_ARGUMENT_ERROR;
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return;
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}
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if (fGlyphs == NULL) {
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success = LE_NO_LAYOUT_ERROR;
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return;
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}
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LE_ARRAY_COPY(glyphs, fGlyphs, fGlyphCount);
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}
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LEGlyphID LEGlyphStorage::getGlyphID(le_int32 glyphIndex, LEErrorCode &success) const
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{
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if (LE_FAILURE(success)) {
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return 0xFFFF;
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}
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if (fGlyphs == NULL) {
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success = LE_NO_LAYOUT_ERROR;
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return 0xFFFF;
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}
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if (glyphIndex < 0 || glyphIndex >= fGlyphCount) {
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success = LE_INDEX_OUT_OF_BOUNDS_ERROR;
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return 0xFFFF;
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}
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return fGlyphs[glyphIndex];
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}
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void LEGlyphStorage::setGlyphID(le_int32 glyphIndex, LEGlyphID glyphID, LEErrorCode &success)
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{
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if (LE_FAILURE(success)) {
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return;
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}
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if (fGlyphs == NULL) {
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success = LE_NO_LAYOUT_ERROR;
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return;
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}
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if (glyphIndex < 0 || glyphIndex >= fGlyphCount) {
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success = LE_INDEX_OUT_OF_BOUNDS_ERROR;
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return;
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}
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fGlyphs[glyphIndex] = glyphID;
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}
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le_int32 LEGlyphStorage::getCharIndex(le_int32 glyphIndex, LEErrorCode &success) const
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{
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if (LE_FAILURE(success)) {
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return -1;
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}
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if (fCharIndices == NULL) {
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success = LE_NO_LAYOUT_ERROR;
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return -1;
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}
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if (glyphIndex < 0 || glyphIndex >= fGlyphCount) {
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success = LE_INDEX_OUT_OF_BOUNDS_ERROR;
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return -1;
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}
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return fCharIndices[glyphIndex];
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}
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void LEGlyphStorage::setCharIndex(le_int32 glyphIndex, le_int32 charIndex, LEErrorCode &success)
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{
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if (LE_FAILURE(success)) {
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return;
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}
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if (fCharIndices == NULL) {
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success = LE_NO_LAYOUT_ERROR;
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return;
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}
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if (glyphIndex < 0 || glyphIndex >= fGlyphCount) {
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success = LE_INDEX_OUT_OF_BOUNDS_ERROR;
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return;
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}
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fCharIndices[glyphIndex] = charIndex;
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}
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void LEGlyphStorage::getAuxData(le_uint32 auxData[], LEErrorCode &success) const
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{
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if (LE_FAILURE(success)) {
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return;
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}
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if (auxData == NULL) {
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success = LE_ILLEGAL_ARGUMENT_ERROR;
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return;
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}
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if (fAuxData == NULL) {
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success = LE_NO_LAYOUT_ERROR;
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return;
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}
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LE_ARRAY_COPY(auxData, fAuxData, fGlyphCount);
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}
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le_uint32 LEGlyphStorage::getAuxData(le_int32 glyphIndex, LEErrorCode &success) const
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{
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if (LE_FAILURE(success)) {
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return 0;
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}
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if (fAuxData == NULL) {
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success = LE_NO_LAYOUT_ERROR;
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return 0;
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}
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if (glyphIndex < 0 || glyphIndex >= fGlyphCount) {
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success = LE_INDEX_OUT_OF_BOUNDS_ERROR;
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return 0;
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}
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return fAuxData[glyphIndex];
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}
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void LEGlyphStorage::setAuxData(le_int32 glyphIndex, le_uint32 auxData, LEErrorCode &success)
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{
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if (LE_FAILURE(success)) {
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return;
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}
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if (fAuxData == NULL) {
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success = LE_NO_LAYOUT_ERROR;
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return;
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}
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if (glyphIndex < 0 || glyphIndex >= fGlyphCount) {
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success = LE_INDEX_OUT_OF_BOUNDS_ERROR;
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return;
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}
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fAuxData[glyphIndex] = auxData;
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}
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void LEGlyphStorage::getGlyphPositions(float positions[], LEErrorCode &success) const
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{
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if (LE_FAILURE(success)) {
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return;
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}
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if (positions == NULL) {
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success = LE_ILLEGAL_ARGUMENT_ERROR;
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return;
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}
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if (fPositions == NULL) {
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success = LE_NO_LAYOUT_ERROR;
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return;
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}
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LE_ARRAY_COPY(positions, fPositions, fGlyphCount * 2 + 2);
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}
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void LEGlyphStorage::getGlyphPosition(le_int32 glyphIndex, float &x, float &y, LEErrorCode &success) const
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{
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if (LE_FAILURE(success)) {
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return;
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}
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if (glyphIndex < 0 || glyphIndex > fGlyphCount) {
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success = LE_INDEX_OUT_OF_BOUNDS_ERROR;
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return;
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}
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if (fPositions == NULL) {
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success = LE_NO_LAYOUT_ERROR;
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return;
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}
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x = fPositions[glyphIndex * 2];
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y = fPositions[glyphIndex * 2 + 1];
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}
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void LEGlyphStorage::setPosition(le_int32 glyphIndex, float x, float y, LEErrorCode &success)
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{
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if (LE_FAILURE(success)) {
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return;
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}
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if (glyphIndex < 0 || glyphIndex > fGlyphCount) {
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success = LE_INDEX_OUT_OF_BOUNDS_ERROR;
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return;
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}
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fPositions[glyphIndex * 2] = x;
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fPositions[glyphIndex * 2 + 1] = y;
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}
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void LEGlyphStorage::adjustPosition(le_int32 glyphIndex, float xAdjust, float yAdjust, LEErrorCode &success)
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{
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if (LE_FAILURE(success)) {
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return;
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}
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if (glyphIndex < 0 || glyphIndex > fGlyphCount) {
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success = LE_INDEX_OUT_OF_BOUNDS_ERROR;
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return;
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}
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fPositions[glyphIndex * 2] += xAdjust;
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fPositions[glyphIndex * 2 + 1] += yAdjust;
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}
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void LEGlyphStorage::adoptGlyphArray(LEGlyphStorage &from)
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{
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if (fGlyphs != NULL) {
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LE_DELETE_ARRAY(fGlyphs);
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}
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fGlyphs = from.fGlyphs;
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from.fGlyphs = NULL;
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if (fInsertionList != NULL) {
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delete fInsertionList;
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}
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fInsertionList = from.fInsertionList;
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from.fInsertionList = NULL;
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}
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void LEGlyphStorage::adoptCharIndicesArray(LEGlyphStorage &from)
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{
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if (fCharIndices != NULL) {
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LE_DELETE_ARRAY(fCharIndices);
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}
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fCharIndices = from.fCharIndices;
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from.fCharIndices = NULL;
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}
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void LEGlyphStorage::adoptPositionArray(LEGlyphStorage &from)
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{
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if (fPositions != NULL) {
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LE_DELETE_ARRAY(fPositions);
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}
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fPositions = from.fPositions;
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from.fPositions = NULL;
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}
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void LEGlyphStorage::adoptAuxDataArray(LEGlyphStorage &from)
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{
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if (fAuxData != NULL) {
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LE_DELETE_ARRAY(fAuxData);
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}
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fAuxData = from.fAuxData;
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from.fAuxData = NULL;
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}
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void LEGlyphStorage::adoptGlyphCount(LEGlyphStorage &from)
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{
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fGlyphCount = from.fGlyphCount;
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}
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void LEGlyphStorage::adoptGlyphCount(le_int32 newGlyphCount)
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{
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fGlyphCount = newGlyphCount;
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}
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// FIXME: add error checking?
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LEGlyphID *LEGlyphStorage::insertGlyphs(le_int32 atIndex, le_int32 insertCount)
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{
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return fInsertionList->insert(atIndex, insertCount);
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}
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le_int32 LEGlyphStorage::applyInsertions()
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{
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le_int32 growAmount = fInsertionList->getGrowAmount();
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if (growAmount == 0) {
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return fGlyphCount;
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}
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le_int32 newGlyphCount = fGlyphCount + growAmount;
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fGlyphs = (LEGlyphID *) LE_GROW_ARRAY(fGlyphs, newGlyphCount);
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fCharIndices = (le_int32 *) LE_GROW_ARRAY(fCharIndices, newGlyphCount);
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if (fAuxData != NULL) {
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fAuxData = (le_uint32 *) LE_GROW_ARRAY(fAuxData, newGlyphCount);
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}
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fSrcIndex = fGlyphCount - 1;
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fDestIndex = newGlyphCount - 1;
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#if 0
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// If the current position is at the end of the array
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// update it to point to the end of the new array. The
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// insertion callback will handle all other cases.
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// FIXME: this is left over from GlyphIterator, but there's no easy
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// way to implement this here... it seems that GlyphIterator doesn't
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// really need it 'cause the insertions don't get applied until after a
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// complete pass over the glyphs, after which the iterator gets reset anyhow...
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// probably better to just document that for LEGlyphStorage and GlyphIterator...
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if (position == glyphCount) {
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position = newGlyphCount;
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}
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#endif
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fInsertionList->applyInsertions(this);
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fInsertionList->reset();
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return fGlyphCount = newGlyphCount;
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}
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le_bool LEGlyphStorage::applyInsertion(le_int32 atPosition, le_int32 count, LEGlyphID newGlyphs[])
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{
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#if 0
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// if the current position is within the block we're shifting
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// it needs to be updated to the current glyph's
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// new location.
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// FIXME: this is left over from GlyphIterator, but there's no easy
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// way to implement this here... it seems that GlyphIterator doesn't
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// really need it 'cause the insertions don't get applied until after a
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// complete pass over the glyphs, after which the iterator gets reset anyhow...
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// probably better to just document that for LEGlyphStorage and GlyphIterator...
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if (position >= atPosition && position <= fSrcIndex) {
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position += fDestIndex - fSrcIndex;
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}
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#endif
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if (fAuxData != NULL) {
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le_int32 src = fSrcIndex, dest = fDestIndex;
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while (src > atPosition) {
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fAuxData[dest--] = fAuxData[src--];
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}
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for (le_int32 i = count - 1; i >= 0; i -= 1) {
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fAuxData[dest--] = fAuxData[atPosition];
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}
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}
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while (fSrcIndex > atPosition) {
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fGlyphs[fDestIndex] = fGlyphs[fSrcIndex];
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fCharIndices[fDestIndex] = fCharIndices[fSrcIndex];
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fDestIndex -= 1;
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fSrcIndex -= 1;
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}
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for (le_int32 i = count - 1; i >= 0; i -= 1) {
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fGlyphs[fDestIndex] = newGlyphs[i];
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fCharIndices[fDestIndex] = fCharIndices[atPosition];
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|
fDestIndex -= 1;
|
|
}
|
|
|
|
// the source glyph we're pointing at
|
|
// just got replaced by the insertion
|
|
fSrcIndex -= 1;
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
U_NAMESPACE_END
|
|
|