Paragraph::Paragraph(const LEUnicode chars[], int32_t charCount, const FontRuns *fontRuns, LEErrorCode &status)
: fParagraphLayout(NULL), fLineCount(0), fLinesMax(0), fLinesGrow(LINE_GROW), fLines(NULL), fChars(NULL),
fLineHeight(-1), fAscent(-1), fWidth(-1), fHeight(-1)
{
if (LE_FAILURE(status)) {
return;
}
LocaleRuns *locales = NULL;
fChars = LE_NEW_ARRAY(LEUnicode, charCount);
LE_ARRAY_COPY(fChars, chars, charCount);
fParagraphLayout = new ParagraphLayout(fChars, charCount, fontRuns, NULL, NULL, locales, UBIDI_DEFAULT_LTR, FALSE, status);
if (LE_FAILURE(status)) {
return;
}
le_int32 ascent = fParagraphLayout->getAscent();
le_int32 descent = fParagraphLayout->getDescent();
le_int32 leading = fParagraphLayout->getLeading();
fLineHeight = ascent + descent + leading;
fAscent = ascent;
}
void GlyphLayout::growScriptInfo()
{
ScriptInfo *old = fScriptInfo;
fScriptInfo = new ScriptInfo[fScriptMax + eGrowStorage + 1];
LE_ARRAY_COPY(fScriptInfo, old, fScriptMax);
fScriptMax += eGrowStorage;
if (old != fScriptInfoBase) {
delete old;
}
}
Paragraph::Paragraph(const LEUnicode chars[], int32_t charCount, const FontRuns *fontRuns, LEErrorCode &status)
: fParagraphLayout(NULL), fParagraphCount(0), fParagraphMax(PARA_GROW), fParagraphGrow(PARA_GROW),
fLineCount(0), fLinesMax(LINE_GROW), fLinesGrow(LINE_GROW), fLines(NULL), fChars(NULL),
fLineHeight(-1), fAscent(-1), fWidth(-1), fHeight(-1), fParagraphLevel(UBIDI_DEFAULT_LTR)
{
static const LEUnicode separators[] = {CH_LF, CH_CR, CH_LSEP, CH_PSEP, 0x0000};
if (LE_FAILURE(status)) {
return;
}
le_int32 ascent = 0;
le_int32 descent = 0;
le_int32 leading = 0;
LocaleRuns *locales = NULL;
FontRuns fr(0);
fLines = LE_NEW_ARRAY(const ParagraphLayout::Line *, fLinesMax);
fParagraphLayout = LE_NEW_ARRAY(ParagraphLayout *, fParagraphMax);
fChars = LE_NEW_ARRAY(LEUnicode, charCount + 1);
LE_ARRAY_COPY(fChars, chars, charCount);
fChars[charCount] = 0;
LEUnicode *pStart = &fChars[0];
while (*pStart != 0) {
LEUnicode *pEnd = u_strpbrk(pStart, separators);
le_int32 pAscent, pDescent, pLeading;
ParagraphLayout *paragraphLayout = NULL;
if (pEnd == NULL) {
pEnd = &fChars[charCount];
}
if (pEnd != pStart) {
subsetFontRuns(fontRuns, pStart - fChars, pEnd - fChars, &fr);
paragraphLayout = new ParagraphLayout(pStart, pEnd - pStart, &fr, NULL, NULL, locales, fParagraphLevel, FALSE, status);
if (LE_FAILURE(status)) {
delete paragraphLayout;
break; // return? something else?
}
if (fParagraphLevel == UBIDI_DEFAULT_LTR) {
fParagraphLevel = paragraphLayout->getParagraphLevel();
}
pAscent = paragraphLayout->getAscent();
pDescent = paragraphLayout->getDescent();
pLeading = paragraphLayout->getLeading();
if (pAscent > ascent) {
ascent = pAscent;
}
if (pDescent > descent) {
descent = pDescent;
}
if (pLeading > leading) {
leading = pLeading;
}
}
if (fParagraphCount >= fParagraphMax) {
fParagraphLayout = (ParagraphLayout **) LE_GROW_ARRAY(fParagraphLayout, fParagraphMax + fParagraphGrow);
fParagraphMax += fParagraphGrow;
}
fParagraphLayout[fParagraphCount++] = paragraphLayout;
if (*pEnd == 0) {
break;
}
pStart = skipLineEnd(pEnd);
}
fLineHeight = ascent + descent + leading;
fAscent = ascent;
}
