bool Compose(Font font, int chr, ComposedGlyph& cg)
{
if(chr < 256 || chr > 256 + 128)
return false;
CGInfo f = gc_info[chr - 256];
if(f.type == CG_NONE)
return false;
GlyphInfo gi = GetGlyphInfo(font, f.ascii);
if(!gi.IsNormal())
return false;
int cw = gi.width;
CommonFontInfo fi = GetFontInfo(font);
gi = GetGlyphInfo(font, f.mark);
if(!gi.IsNormal())
return false;
int mw = gi.width;
cg.mark_font = font;
cg.mark_pos.x = cg.mark_pos.y = 0;
cg.basic_char = f.ascii;
cg.mark_char = f.mark;
if(cg.mark_char == CG_COMMA_UR && fi.fixedpitch)
cg.mark_char = CG_CARON;
if(cg.mark_char == CG_COMMA_T) {
cg.mark_pos.y -= 3 * font.GetHeight() / 4;
cg.mark_pos.x += 4 * cw / 10;
if(font.IsItalic())
cg.mark_pos.x += mw / 2;
}
else
if(cg.mark_char == CG_COMMA_UR) {
cg.mark_pos.y -= 2 * font.GetHeight() / 3;
cg.mark_pos.x += cw - mw / 4;
cg.mark_char = ',';
if(font.IsItalic())
cg.mark_pos.x += mw / 3;
}
else
if(cg.mark_char == CG_COMMA_URI) {
cg.mark_pos.y -= 2 * font.GetHeight() / 3;
cg.mark_pos.x += cw - mw / 2;
cg.mark_char = ',';
if(font.IsItalic())
cg.mark_pos.x += mw / 3;
}
else
if(cg.mark_char != CG_STROKE) {
if(cg.mark_char != CG_OGONEK && cg.mark_char != CG_CEDILLA && f.type == CG_CAPITAL) {
cg.mark_font = font(9 * font.GetHeight() / 10);
mw = GetGlyphInfo(cg.mark_font, f.mark).width;
cg.mark_pos.y -= cg.mark_char == CG_RING_ABOVE ? font.GetHeight() / 19
: font.GetHeight() / 10;
}
cg.mark_pos.x += (cw - mw) / 2;
if(font.IsItalic())
cg.mark_pos.x += mw / 5;
}
return true;
}
void SystemDraw::DrawTextOp(int x, int y, int angle, const wchar *text, Font font, Color ink, int n, const int *dx)
{
GuiLock __;
int ascent = font.GetAscent();
double sina = 0;
double cosa = 1;
if(angle)
Draw::SinCos(angle, sina, cosa);
int xpos = 0;
Buffer<cairo_glyph_t> gs(n);
for(int i = 0; i < n; i++) {
cairo_glyph_t& g = gs[i];
g.index = GetGlyphInfo(font, text[i]).glyphi;
g.x = fround(x + cosa * xpos + sina * ascent);
g.y = fround(y + cosa * ascent - sina * xpos);
xpos += dx ? dx[i] : font[text[i]];
}
static LRUCache<FontSysData, Tuple2<Font, int> > cache;
FontDataSysMaker m;
m.font = font;
m.angle = angle;
FontSysData& sf = cache.Get(m);
cairo_set_scaled_font(cr, sf.scaled_font);
SetColor(ink);
cairo_show_glyphs(cr, gs, n);
cache.Shrink(64);
}
NS_IMETHODIMP
nsULE::GetPresentationForm(const PRUnichar *aString,
PRUint32 aLength,
const char *aFontCharset,
char *aGlyphs,
PRSize *aOutLength,
PRBool aIsWide)
{
PangoliteGlyphString *tmpGlyphs=pangolite_glyph_string_new();
GetGlyphInfo(aString, aLength, tmpGlyphs, aFontCharset);
if (tmpGlyphs->num_glyphs > 0) {
gint i=0, glyphCt=0;
for (i=0; i < tmpGlyphs->num_glyphs; i++, glyphCt++) {
if (aIsWide)
aGlyphs[glyphCt++]=(unsigned char)
((tmpGlyphs->glyphs[i].glyph & 0xFF00) >> 8);
aGlyphs[glyphCt]=(unsigned char)(tmpGlyphs->glyphs[i].glyph & 0x00FF);
}
*aOutLength = (PRSize)glyphCt;
}
void PaintCharacter(Painter& sw, const Pointf& p, int chr, Font font)
{
GlyphInfo gi = GetGlyphInfo(font, chr);
PaintCharPath pw;
pw.sw = &sw;
if(gi.IsNormal())
font.Render(pw, p.x, p.y, chr);
else
if(gi.IsReplaced()) {
Font fnt = font;
fnt.Face(gi.lspc);
fnt.Height(gi.rspc);
fnt.Render(pw, p.x, p.y + font.GetAscent() - fnt.GetAscent(), chr);
}
else
if(gi.IsComposed()) {
ComposedGlyph cg;
Compose(font, chr, cg);
font.Render(pw, p.x, p.y, cg.basic_char);
sw.Div();
cg.mark_font.Render(pw, p.x + cg.mark_pos.x, p.y + cg.mark_pos.y, cg.mark_char);
}
sw.EvenOdd(true);
}
void Draw::DrawText(int x, int y, int angle, const wchar *text, Font font,
Color ink, int n, const int *dx)
{
#if defined(flagWINGL) || defined(flagLINUXGL)
if(IsNull(ink))
return;
DrawTextOp(x, y, angle, text, font, ink, n, dx);
#else
if(IsNull(ink)) return;
if(n < 0)
n = wstrlen(text);
Std(font);
double sina = 0;
double cosa = 1;
int posx = 0;
if(angle)
Draw::SinCos(angle, sina, cosa);
Font font0 = font;
if(GetInfo() & DRAWTEXTLINES)
font.Underline(false).Strikeout(false);
for(int i = 0; i < n; i++) {
wchar chr = text[i];
GlyphInfo gi = GetGlyphInfo(font, chr);
if(gi.IsNormal())
if(angle)
DrawTextOp(int(x + cosa * posx), int(y - sina * posx), angle, &chr, font, ink, 1, NULL);
else {
int c = 1;
int dd = 0;
while(i + c < n && c < 1000) {
GlyphInfo gi2 = GetGlyphInfo(font, text[i + c]);
if(!gi2.IsNormal())
break;
dd += dx ? dx[c - 1] : gi.width;
c++;
gi = gi2;
}
DrawTextOp(x + posx, y, 0, text + i, font, ink, c, dx);
posx += dd;
i += c - 1;
if(dx)
dx += c - 1;
}
else
if(gi.IsReplaced()) {
Font fnt = font;
fnt.Face(gi.lspc);
fnt.Height(gi.rspc);
if(angle)
DrawTextOp(int(x + cosa * posx), int(y - sina * (font.GetAscent() - fnt.GetAscent() + posx)),
angle, &chr, fnt, ink, 1, NULL);
else
DrawTextOp(x + posx, y + font.GetAscent() - fnt.GetAscent(), 0, &chr, fnt, ink, 1, NULL);
GlyphMetrics(gi, font, chr);
}
else
if(gi.IsComposed()) {
ComposedGlyph cg;
Compose(font, chr, cg);
if(angle) {
DrawTextOp(int(x + cosa * posx), int(y - sina * posx), angle, &cg.basic_char, font, ink, 1, NULL);
DrawTextOp(int(x + cosa * (posx + cg.mark_pos.x)), int(y - sina * (cg.mark_pos.y + posx)), angle, &cg.mark_char, cg.mark_font, ink, 1, NULL);
}
else {
DrawTextOp(x + posx, y, 0, &cg.basic_char, font, ink, 1, NULL);
DrawTextOp(x + cg.mark_pos.x + posx, y + cg.mark_pos.y, 0, &cg.mark_char, cg.mark_font, ink, 1, NULL);
}
GlyphMetrics(gi, font, chr);
}
else {
Font fnt = Arial(font.GetHeight());
wchar chr = 0x25a1;
gi = GetGlyphInfo(fnt, chr);
if(!gi.IsNormal()) {
chr = ' ';
gi = GetGlyphInfo(fnt, chr);
}
if(angle)
DrawTextOp(int(x + cosa * posx), int(y - sina * posx), angle, &chr, fnt, ink, 1, NULL);
else
DrawTextOp(x + posx, y, 0, &chr, fnt, ink, 1, NULL);
}
posx += dx ? *dx++ : gi.width;
}
if((GetInfo() & DRAWTEXTLINES) && (font0.IsUnderline() || font0.IsStrikeout())) {
int hg = abs(font0.GetCy());
if(hg == 0) hg = 10;
int thickness = max(hg / 20, 1);
int ascent = font0.GetAscent();
Size offset = Point(0, ascent);
if(angle) {
offset.cx = fround(ascent * sina);
offset.cy = fround(ascent * cosa);
}
x += offset.cx;
y += offset.cy;
if(font0.IsUnderline()) {
int p = max(hg / 15, int(font0.Info().GetDescent() > 0));
DrawLine(
int(x + p * sina),
int(y + p * cosa),
int(x + posx * cosa + p * sina),
int(y - posx * sina + p * cosa),
thickness,
ink
);
}
if(font0.IsStrikeout()) {
int p = -ascent / 3;
DrawLine(
int(x + p * sina),
int(y + p * cosa),
int(x + posx * cosa + p * sina),
int(y - posx * sina + p * cosa),
thickness,
ink
);
}
}
#endif
}
void Draw::DrawText(int x, int y, int angle, const wchar *text, Font font,
Color ink, int n, const int *dx)
{
#ifdef flagWINGL
if(IsNull(ink))
return;
DrawTextOp(x, y, angle, text, font, ink, n, dx);
#else
if(IsNull(ink)) return;
if(n < 0)
n = wstrlen(text);
Std(font);
double sina;
double cosa;
int d = 0;
if(angle)
Draw::SinCos(angle, sina, cosa);
for(int i = 0; i < n; i++) {
wchar chr = text[i];
GlyphInfo gi = GetGlyphInfo(font, chr);
if(gi.IsNormal())
if(angle)
DrawTextOp(int(x + cosa * d), int(y - sina * d), angle, &chr, font, ink, 1, NULL);
else {
int c = 1;
int dd = 0;
while(i + c < n) {
GlyphInfo gi2 = GetGlyphInfo(font, text[i + c]);
if(!gi2.IsNormal())
break;
dd += dx ? dx[c] : gi.width;
c++;
gi = gi2;
}
DrawTextOp(x + d, y, 0, text + i, font, ink, c, dx);
d += dd;
i += c - 1;
if(dx)
dx += c - 1;
}
else
if(gi.IsReplaced()) {
Font fnt = font;
fnt.Face(gi.lspc);
fnt.Height(gi.rspc);
if(angle)
DrawTextOp(int(x + cosa * d), int(y - sina * (font.GetAscent() - fnt.GetAscent() + d)),
angle, &chr, fnt, ink, 1, NULL);
else
DrawTextOp(x + d, y + font.GetAscent() - fnt.GetAscent(), 0, &chr, fnt, ink, 1, NULL);
GlyphMetrics(gi, font, chr);
}
else
if(gi.IsComposed()) {
ComposedGlyph cg;
Compose(font, chr, cg);
if(angle) {
DrawTextOp(int(x + cosa * d), int(y - sina * d), angle, &cg.basic_char, font, ink, 1, NULL);
DrawTextOp(int(x + cosa * (d + cg.mark_pos.x)), int(y - sina * (cg.mark_pos.y + d)), angle, &cg.mark_char, cg.mark_font, ink, 1, NULL);
}
else {
DrawTextOp(x + d, y, 0, &cg.basic_char, font, ink, 1, NULL);
DrawTextOp(x + cg.mark_pos.x + d, y + cg.mark_pos.y, 0, &cg.mark_char, cg.mark_font, ink, 1, NULL);
}
GlyphMetrics(gi, font, chr);
}
else {
Font fnt = Arial(font.GetHeight());
wchar chr = 0x25a1;
gi = GetGlyphInfo(fnt, chr);
if(!gi.IsNormal()) {
chr = ' ';
gi = GetGlyphInfo(fnt, chr);
}
if(angle)
DrawTextOp(int(x + cosa * d), int(y - sina * d), angle, &chr, fnt, ink, 1, NULL);
else
DrawTextOp(x + d, y, 0, &chr, fnt, ink, 1, NULL);
}
d += dx ? *dx++ : gi.width;
}
#endif
}