Font::~Font()
{
//remove references to paths and images
for(int i=0;i<m_glyphs.size();i++)
clearGlyph(&m_glyphs[i]);
RI_ASSERT(m_referenceCount == 0);
}
void Font::setGlyphToImage(unsigned int index, VGImage image, const Vector2& origin, const Vector2& escapement)
{
Glyph* g = findGlyph(index);
if(g)
{ //glyph exists, replace
clearGlyph(g);
}
else
{ //glyph doesn't exist, allocate a new one
g = newGlyph();
}
g->m_index = index;
g->m_state = Glyph::GLYPH_IMAGE;
g->m_path = VG_INVALID_HANDLE;
g->m_image = image;
g->m_isHinted = false;
g->m_origin = origin;
g->m_escapement = escapement;
if(image != VG_INVALID_HANDLE)
{
Image* p = (Image*)image;
p->addReference();
p->addInUse();
}
}
void Font::setGlyphToPath(unsigned int index, VGPath path, bool isHinted, const Vector2& origin, const Vector2& escapement)
{
Glyph* g = findGlyph(index);
if(g)
{ //glyph exists, replace
clearGlyph(g);
}
else
{ //glyph doesn't exist, allocate a new one
g = newGlyph();
}
g->m_index = index;
g->m_state = Glyph::GLYPH_PATH;
g->m_path = path;
g->m_image = VG_INVALID_HANDLE;
g->m_isHinted = isHinted;
g->m_origin = origin;
g->m_escapement = escapement;
if(path != VG_INVALID_HANDLE)
{
Path* p = (Path*)path;
p->addReference();
}
}
bool GlyphString::shapeFriBidi(bool removeInvisibleCharacters)
{
if (mState != Analyzed)
return false;
FriBidiJoiningType *joiningTypes = new FriBidiJoiningType[mSize];
fribidi_get_joining_types(mCodePoints, mSize, joiningTypes);
fribidi_join_arabic(mTypes, mSize, mLevels, joiningTypes);
fribidi_shape(FRIBIDI_FLAGS_DEFAULT | FRIBIDI_FLAGS_ARABIC,
mLevels, mSize, joiningTypes, mCodePoints);
delete[] joiningTypes;
loadGlyphImages();
if (removeInvisibleCharacters) {
for (int i = 0; i < mSize; ++i) {
if (mCodePoints[i] == 0xfeff
|| mCodePoints[i] == 0x061c
|| (mCodePoints[i] >= 0x202a && mCodePoints[i] <= 0x202e)
|| (mCodePoints[i] >= 0x2060 && mCodePoints[i] <= 0x2069)
|| (mCodePoints[i] >= 0x200b && mCodePoints[i] <= 0x200f))
clearGlyph(i);
}
}
mState = Shaped;
return true;
}
bool GlyphString::layout()
{
if (mState == Invalid)
return false;
for (int i = 0; i < mSize; ++i) {
mMap[i] = i;
mLines[i] = -1;
}
mLineInfos.clear();
int lineNo = 0;
int width = 0;
int lineStart = 0;
int lastSpace = -1;
for (int i = 0; i <= mSize; ++i) {
if (i == mSize) {
mLineInfos.push_back(newLine(lineStart, i, lineNo++));
break;
}
//if (mCodePoints[i] == ' ') {
if (mTypes[i] == FRIBIDI_TYPE_WS) {
if (lineStart == i) {
lineStart = i + 1;
continue;
} else if (lastSpace == i - 1) {
clearGlyph(i - 1);
lastSpace = i;
continue;
}
lastSpace = i;
}
width += mGeometries[i].xAdvance;
if (mMaxWidth < width) {
if (lineStart == i) {
return false;
}
if (lastSpace > lineStart) {
mLineInfos.push_back(newLine(lineStart, lastSpace, lineNo++));
width = 0;
lineStart = lastSpace + 1;
i = lastSpace;
continue;
} else {
mLineInfos.push_back(newLine(lineStart, i, lineNo++));
width = 0;
lineStart = i;
--i;
continue;
}
}
}
mState = LaidOut;
return true;
}