ultimatepp/uppsrc/CtrlCore/CocoDrawText.mm
cxl 5ec09a4029 CtrlCore: Cocoa font metrics improved
git-svn-id: svn://ultimatepp.org/upp/trunk@12215 f0d560ea-af0d-0410-9eb7-867de7ffcac7
2018-08-31 15:20:02 +00:00

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#include "CocoMM.h"
#ifdef PLATFORM_COCOA
#define LLOG(x)
#define LTIMING(x)
namespace Upp {
CTFontRef CT_Font0(Font fnt, bool& synth)
{
CFRef<CFStringRef> s = CFStringCreateWithCString(NULL, ~fnt.GetFaceName(), kCFStringEncodingUTF8);
CFRef<CTFontRef> ctfont0 = CTFontCreateWithName(s, fnt.GetHeight(), NULL);
synth = false;
if(fnt.IsItalic() || fnt.IsBold()) {
CTFontSymbolicTraits t = 0;
if(fnt.IsBold())
t |= kCTFontBoldTrait;
if(fnt.IsItalic())
t |= kCTFontItalicTrait;
CFRef<CTFontRef> ctfont = CTFontCreateCopyWithSymbolicTraits(ctfont0, fnt.GetHeight(),
NULL, t, t);
if(ctfont)
return ctfont.Detach();
synth = true;
}
return ctfont0.Detach();
}
CTFontRef CT_Font(Font fnt, bool& synth)
{
struct Entry {
Font font;
CTFontRef ctfont = NULL;
bool synth = false;
void Free() { if(ctfont) CFRelease(ctfont); ctfont = NULL; }
Entry() { font.Height(-22222); }
~Entry() { Free(); }
};
const int FONTCACHE = 64;
static Entry cache[FONTCACHE];
for(int i = 0; i < FONTCACHE; i++)
if(cache[i].font == fnt) {
synth = cache[i].synth;
return cache[i].ctfont;
}
Entry& e = cache[Random(FONTCACHE)];
e.Free();
e.font = fnt;
e.ctfont = CT_Font0(fnt, synth);
e.synth = synth;
return e.ctfont;
}
CGGlyph GetCharGlyph(CTFontRef ctfont, int chr)
{
CGGlyph glyph_index;
UniChar h = chr;
CTFontGetGlyphsForCharacters(ctfont, &h, &glyph_index, 1);
return glyph_index;
}
GlyphInfo GetGlyphInfoSys(CTFontRef ctfont, int chr, bool bold_synth)
{
GlyphInfo gi;
gi.lspc = gi.rspc = 0;
gi.width = 0x8000;
if(ctfont) {
LTIMING("GetGlyphInfoSys 2");
CGGlyph glyph_index = GetCharGlyph(ctfont, chr);
if(glyph_index) {
CGSize advance;
CTFontGetAdvancesForGlyphs(ctfont, kCTFontOrientationHorizontal, &glyph_index, &advance, 1);
gi.width = ceil(advance.width);
gi.lspc = gi.rspc = 0; // TODO! (using bounding box?)
gi.glyphi = glyph_index;
if(bold_synth)
gi.width++;
}
}
return gi;
}
CommonFontInfo GetFontInfoSys(Font font)
{
CommonFontInfo fi;
String path;
bool synth;
CTFontRef ctfont = CT_Font(font, synth);
if(ctfont) {
#if 0
DDUMP(font);
DDUMP(CTFontGetSize(ctfont));
DDUMP(CTFontGetAscent(ctfont));
DDUMP(CTFontGetDescent(ctfont));
DDUMP();
DDUMP(CTFontGetXHeight(ctfont));
DDUMP(CTFontGetUnderlinePosition(ctfont));
DDUMP(MakeRect(CTFontGetBoundingBox(ctfont)));
DDUMPHEX(CTFontGetSymbolicTraits(ctfont));
#endif
fi.descent = ceil(CTFontGetDescent(ctfont));
fi.ascent = ceil(CTFontGetAscent(ctfont));
fi.external = ceil(CTFontGetLeading(ctfont));
fi.internal = 0;
fi.overhang = 0;
fi.maxwidth = GetGlyphInfoSys(ctfont, 'W', synth && font.IsBold()).width; // TODO?
fi.avewidth = GetGlyphInfoSys(ctfont, 'e', synth && font.IsBold()).width;
fi.default_char = '?';
fi.fixedpitch = CTFontGetSymbolicTraits(ctfont) & kCTFontMonoSpaceTrait;
fi.ttf = true;
CFRef<CTFontDescriptorRef> fd = CTFontCopyFontDescriptor(ctfont);
CFRef<CFURLRef> url = (CFURLRef)CTFontDescriptorCopyAttribute(fd, kCTFontURLAttribute);
CFRef<CFStringRef> path = CFURLCopyFileSystemPath(url, kCFURLPOSIXPathStyle);
String p = ToString(path);
if(p.GetCount() < 250)
strcpy(fi.path, ~p);
else
*fi.path = 0;
}
return fi;
}
GlyphInfo GetGlyphInfoSys(Font font, int chr)
{
LTIMING("GetGlyphInfoSys");
bool synth;
CTFontRef ctfont = CT_Font(font, synth);
return GetGlyphInfoSys(ctfont, chr, synth && font.IsBold());
}
Vector<FaceInfo> GetAllFacesSys()
{
Index<String> facename;
facename.Add("Arial"); // TODO: This should be default GUI font
facename.Add("Times New Roman");
facename.Add("Arial");
facename.Add("Courier New");
int oi = facename.GetCount();
AutoreleasePool __;
CFRef<CTFontCollectionRef> collection = CTFontCollectionCreateFromAvailableFonts(0);
if(collection) {
CFRef<CFArrayRef> fonts = CTFontCollectionCreateMatchingFontDescriptors(collection);
if(fonts) {
int count = CFArrayGetCount(fonts);
for(int i = 0; i < count; ++i) {
CTFontDescriptorRef font = (CTFontDescriptorRef)CFArrayGetValueAtIndex(fonts, i);
CFRef<CFStringRef> family_name = (CFStringRef)CTFontDescriptorCopyAttribute(font, kCTFontFamilyNameAttribute);
facename.FindAdd(ToString(family_name));
}
}
}
Vector<String> h = facename.PickKeys();
Sort(SubRange(h, oi, h.GetCount() - oi));
Vector<FaceInfo> r;
for(String s : h) {
FaceInfo& fi = r.Add();
fi.name = s;
fi.info = Font::TTF;
CFRef<CFStringRef> fs = CFStringCreateWithCString(NULL, ~s, kCFStringEncodingUTF8);
CFRef<CTFontRef> ctfont = CTFontCreateWithName(fs, 12, NULL);
dword traits = CTFontGetSymbolicTraits(ctfont);
if(traits & kCTFontMonoSpaceTrait)
fi.info |= Font::FIXEDPITCH;
switch(traits & kCTFontClassMaskTrait) {
case kCTFontOldStyleSerifsClass:
case kCTFontTransitionalSerifsClass:
case kCTFontModernSerifsClass:
case kCTFontClarendonSerifsClass:
case kCTFontSlabSerifsClass:
case kCTFontFreeformSerifsClass:
fi.info |= Font::SERIFSTYLE;
break;
case kCTFontScriptsClass:
fi.info |= Font::SCRIPTSTYLE;
break;
}
}
return r;
}
String GetFontDataSys(Font font)
{
return LoadFile(font.Fi().path);
}
struct sCGPathTarget {
double x, y;
FontGlyphConsumer *sw;
};
static void convertCGPathToQPainterPath(void *info, const CGPathElement *e)
{
auto t = (sCGPathTarget *)info;
switch(e->type) {
case kCGPathElementMoveToPoint:
t->sw->Move(Pointf(e->points[0].x + t->x, e->points[0].y + t->y));
break;
case kCGPathElementAddLineToPoint:
t->sw->Line(Pointf(e->points[0].x + t->x, e->points[0].y + t->y));
break;
case kCGPathElementAddQuadCurveToPoint:
t->sw->Quadratic(Pointf(e->points[0].x + t->x, e->points[0].y + t->y),
Pointf(e->points[1].x + t->x, e->points[1].y + t->y));
break;
case kCGPathElementAddCurveToPoint:
t->sw->Cubic(Pointf(e->points[0].x + t->x, e->points[0].y + t->y),
Pointf(e->points[1].x + t->x, e->points[1].y + t->y),
Pointf(e->points[2].x + t->x, e->points[2].y + t->y));
break;
case kCGPathElementCloseSubpath:
t->sw->Close();
break;
}
}
void RenderCharacterSys(FontGlyphConsumer& sw, double x, double y, int chr, Font font)
{
CGAffineTransform cgMatrix = CGAffineTransformIdentity;
cgMatrix = CGAffineTransformScale(cgMatrix, 1, -1);
bool synth;
CTFontRef ctfont = CT_Font(font, synth);
CGGlyph glyph_index = GetCharGlyph(ctfont, chr);
CFRef<CGPathRef> cgpath = CTFontCreatePathForGlyph(ctfont, glyph_index, &cgMatrix);
sCGPathTarget t;
t.x = x;
t.y = y + font.GetAscent();
t.sw = &sw;
CGPathApply(cgpath, &t, convertCGPathToQPainterPath);
}
void SystemDraw::DrawTextOp(int x, int y, int angle, const wchar *text, Font font, Color ink,
int n, const int *dx)
{
Set(ink);
bool synth;
CFRef<CGFontRef> cgFont = CTFontCopyGraphicsFont(CT_Font(font, synth), NULL);
CGContextSetFont(cgHandle, cgFont);
Point off = GetOffset();
if(angle || synth) {
CGAffineTransform tm = CGAffineTransformMakeTranslation(x + off.x, top - y - off.y);
tm = CGAffineTransformRotate(tm, M_2PI * angle / 3600);
x = 0;
y = -font.GetAscent();
if(font.IsItalic() && synth) {
x += font.GetDescent();
tm = CGAffineTransformConcat(CGAffineTransformMake(1, 0, 0.2, 1, 0, 0), tm);
}
CGContextSetTextMatrix(cgHandle, tm);
}
else {
x += off.x;
y = top - y - font.GetAscent() - off.y;
}
int nn = (1 + (synth && font.IsBold())) * n;
Buffer<CGGlyph> g(nn);
Buffer<CGPoint> p(nn);
int ti = 0;
for(int i = 0; i < n; i++) {
int chr = text[i];
GlyphInfo f = GetGlyphInfo(font, chr);
p[ti].y = y;
p[ti].x = x;
g[ti] = f.glyphi;
ti++;
if(synth && font.IsBold()) {
p[ti].y = y;
p[ti].x = ++x;
g[ti] = f.glyphi;
ti++;
}
x += dx ? *dx++ : f.width;
}
CGContextSetFontSize(cgHandle, font.GetHeight());
CGContextShowGlyphsAtPositions(cgHandle, g, p, nn);
if(angle || synth)
CGContextSetTextMatrix(cgHandle, CGAffineTransformIdentity);
}
};
#endif