void GlyphIterator::setCursiveGlyph()
{
if (direction < 0) {
if (position <= nextLimit || position >= prevLimit) {
return;
}
} else {
if (position <= prevLimit || position >= nextLimit) {
return;
}
}
glyphPositionAdjustments->setCursiveGlyph(position, baselineIsLogicalEnd());
}
void GlyphPositionAdjustments::applyCursiveAdjustments(LEGlyphStorage &glyphStorage, le_bool rightToLeft, const LEFontInstance *fontInstance)
{
if (! hasCursiveGlyphs()) {
return;
}
le_int32 start = 0, end = fGlyphCount, dir = 1;
le_int32 firstExitPoint = -1, lastExitPoint = -1;
LEPoint entryAnchor, exitAnchor, pixels;
LEGlyphID lastExitGlyphID = 0;
float baselineAdjustment = 0;
// This removes a possible warning about
// using exitAnchor before it's been initialized.
exitAnchor.fX = exitAnchor.fY = 0;
if (rightToLeft) {
start = fGlyphCount - 1;
end = -1;
dir = -1;
}
for (le_int32 i = start; i != end; i += dir) {
LEGlyphID glyphID = glyphStorage[i];
if (isCursiveGlyph(i)) {
if (lastExitPoint >= 0 && getEntryPoint(i, entryAnchor) != NULL) {
float anchorDiffX = exitAnchor.fX - entryAnchor.fX;
float anchorDiffY = exitAnchor.fY - entryAnchor.fY;
baselineAdjustment += anchorDiffY;
adjustYPlacement(i, baselineAdjustment);
if (rightToLeft) {
LEPoint secondAdvance;
fontInstance->getGlyphAdvance(glyphID, pixels);
fontInstance->pixelsToUnits(pixels, secondAdvance);
adjustXAdvance(i, -(anchorDiffX + secondAdvance.fX));
} else {
LEPoint firstAdvance;
fontInstance->getGlyphAdvance(lastExitGlyphID, pixels);
fontInstance->pixelsToUnits(pixels, firstAdvance);
adjustXAdvance(lastExitPoint, anchorDiffX - firstAdvance.fX);
}
}
lastExitPoint = i;
if (getExitPoint(i, exitAnchor) != NULL) {
if (firstExitPoint < 0) {
firstExitPoint = i;
}
lastExitGlyphID = glyphID;
} else {
if (baselineIsLogicalEnd(i) && firstExitPoint >= 0 && lastExitPoint >= 0) {
le_int32 limit = lastExitPoint /*+ dir*/;
LEPoint dummyAnchor;
if (getEntryPoint(i, dummyAnchor) != NULL) {
limit += dir;
}
for (le_int32 j = firstExitPoint; j != limit; j += dir) {
if (isCursiveGlyph(j)) {
adjustYPlacement(j, -baselineAdjustment);
}
}
}
firstExitPoint = lastExitPoint = -1;
baselineAdjustment = 0;
}
}
}
}