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News from FLTK1.1 and Quartz

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- listing fonts using ATS instead of QD
- made bold and italic fonts work
- returning correct font metrics
One problem came up though: Quartz renders fonts at subpixel positions,
which is great for the overall look, but unfortunatly 'fl_draw' supports
only integer coordinates for printing. As a result, marking a line of text
makes the rest of the line jump by a fractional pixel. Any suggestions to
solve this problem are greatly appreciated!


git-svn-id: file:///fltk/svn/fltk/branches/branch-1.1@3810 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
This commit is contained in:
Matthias Melcher
2004-09-09 00:55:41 +00:00
parent 88ff012c44
commit b90f593ae6
5 changed files with 116 additions and 22 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/Fl_Font.H
+2 -3
View File
@@ -1,5 +1,5 @@
//
// "$Id: Fl_Font.H,v 1.6.2.3.2.7 2004/08/26 00:18:42 matthiaswm Exp $"
// "$Id: Fl_Font.H,v 1.6.2.3.2.8 2004/09/09 00:55:41 matthiaswm Exp $"
//
// Font definitions for the Fast Light Tool Kit (FLTK).
//
@@ -57,7 +57,6 @@ public:
short width[256];
bool knowMetrics;
# elif defined(__APPLE_QUARTZ__)
#warning : minimal quartz, use ATS instead!
FL_EXPORT Fl_FontSize(const char* fontname, int size);
char *q_name;
int size;
@@ -102,5 +101,5 @@ FL_EXPORT char *fl_find_fontsize(char *name);
#endif
//
// End of "$Id: Fl_Font.H,v 1.6.2.3.2.7 2004/08/26 00:18:42 matthiaswm Exp $".
// End of "$Id: Fl_Font.H,v 1.6.2.3.2.8 2004/09/09 00:55:41 matthiaswm Exp $".
//
src/fl_font_mac.cxx
+58 -8
View File
@@ -1,5 +1,5 @@
//
// "$Id: fl_font_mac.cxx,v 1.1.2.20 2004/09/07 20:59:17 easysw Exp $"
// "$Id: fl_font_mac.cxx,v 1.1.2.21 2004/09/09 00:55:41 matthiaswm Exp $"
//
// MacOS font selection routines for the Fast Light Tool Kit (FLTK).
//
@@ -25,10 +25,6 @@
#include <config.h>
#ifdef __APPLE_QUARTZ__
#warning quartz
#endif
//: MeasureText, FontMetrics, WidthTabHandle, GetSysFont, SysFontSize
//: TextSize, TextFont
//: GetFNum (theName: Str255; VAR familyID: Integer);
@@ -58,12 +54,24 @@ Fl_FontSize::Fl_FontSize(const char* name, int Size) {
#endif
minsize = maxsize = size;
#elif defined(__APPLE_QUARTZ__)
q_name = strdup(name+1);
q_name = strdup(name);
size = Size;
ascent = Size*3/4;
descent = Size-ascent;
q_width = Size*2/3;
minsize = maxsize = Size;
// Using ATS to get the genral Glyph size information
CFStringRef cfname = CFStringCreateWithCString(0L, q_name, kCFStringEncodingASCII);
ATSFontRef font = ATSFontFindFromName(cfname, kATSOptionFlagsDefault);
if (font) {
ATSFontMetrics m = { 0 };
ATSFontGetHorizontalMetrics(font, kATSOptionFlagsDefault, &m);
if (m.avgAdvanceWidth) q_width = int(m.avgAdvanceWidth*size);
// playing with the offsets a little to make standard sizes fit
if (m.ascent) ascent = int(m.ascent*size-0.5f);
if (m.descent) descent = -int(m.descent*size-1.5f);
}
CFRelease(cfname);
#endif
}
@@ -93,6 +101,7 @@ Fl_FontSize::~Fl_FontSize() {
////////////////////////////////////////////////////////////////
static Fl_Fontdesc built_in_table[] = {
#ifdef __APPLE_QD__
{" Arial"},
{"BArial"},
{"IArial"},
@@ -109,6 +118,24 @@ static Fl_Fontdesc built_in_table[] = {
{" Chicago"},
{"BChicago"},
{" Webdings"},
#elif defined(__APPLE_QUARTZ__)
{"Arial"},
{"Arial Bold"},
{"Arial Italic"},
{"Arial Bold Italic"},
{"Courier New"},
{"Courier New Bold"},
{"Courier New Italic"},
{"Courier New Bold Italic"},
{"Times New Roman"},
{"Times New Roman Bold"},
{"Times New Roman Italic"},
{"Times New Roman Bold Italic"},
{"Symbol"},
{"Monaco"},
{"Andale Mono"}, // there is no bold Monaco font on standard Mac
{"Webdings"},
#endif
};
Fl_Fontdesc* fl_fonts = built_in_table;
@@ -120,7 +147,8 @@ void fl_font(Fl_FontSize* s) {
TextFont(fl_fontsize->font); //: select font into current QuickDraw GC
TextFace(fl_fontsize->face);
TextSize(fl_fontsize->size);
if (!fl_fontsize->knowMetrics) { //: get the true metrics for the currnet GC (fails on multiple monitors with different dpi's!)
if (!fl_fontsize->knowMetrics) { //: get the true metrics for the currnet GC
//: (fails on multiple monitors with different dpi's!)
FontInfo fi; GetFontInfo(&fi);
fl_fontsize->ascent = fi.ascent;
fl_fontsize->descent = fi.descent;
@@ -172,13 +200,35 @@ int fl_descent() {
else return -1;
}
// TODO: the text has to be translated according to the macroman_lut to give
// the correct result!
double fl_width(const char* c, int n) {
#ifdef __APPLE_QD__
return (double)TextWidth( c, 0, n );
#else
if (!fl_gc) {
Fl_Window *w = Fl::first_window();
if (w) w->make_current();
if (!fl_gc) return -1;
}
// according to the Apple developer docs, this is the correct way to
// find the length of a rendered text...
CGContextSetTextPosition(fl_gc, 0, 0);
CGContextSetTextDrawingMode(fl_gc, kCGTextInvisible);
CGContextShowText(fl_gc, c, n);
CGContextSetTextDrawingMode(fl_gc, kCGTextFill);
CGPoint p = CGContextGetTextPosition(fl_gc);
return p.x;
#endif
}
// todo : fl_width returns wrong results for OS X
double fl_width(uchar c) {
#ifdef __APPLE_QD__
return (double)TextWidth( &c, 0, 1 );
#else
return fl_width((const char*)&c, 1);
#endif
}
// MRS: The default character set is MacRoman, which is different from
@@ -228,5 +278,5 @@ void fl_draw(const char* str, int n, int x, int y) {
//
// End of "$Id: fl_font_mac.cxx,v 1.1.2.20 2004/09/07 20:59:17 easysw Exp $".
// End of "$Id: fl_font_mac.cxx,v 1.1.2.21 2004/09/09 00:55:41 matthiaswm Exp $".
//
src/fl_set_fonts_mac.cxx
+46 -7
View File
@@ -1,5 +1,5 @@
//
// "$Id: fl_set_fonts_mac.cxx,v 1.1.2.11 2004/08/25 00:20:27 matthiaswm Exp $"
// "$Id: fl_set_fonts_mac.cxx,v 1.1.2.12 2004/09/09 00:55:41 matthiaswm Exp $"
//
// MacOS font utilities for the Fast Light Tool Kit (FLTK).
//
@@ -25,10 +25,6 @@
#include <config.h>
#ifdef __APPLE_QUARTZ__
#warning quartz
#endif
// This function fills in the fltk font table with all the fonts that
// are found on the X server. It tries to place the fonts into families
// and to sort them so the first 4 in a family are normal, bold, italic,
@@ -42,6 +38,7 @@
// turn a stored font name into a pretty name:
const char* Fl::get_font_name(Fl_Font fnum, int* ap) {
#ifdef __APPLE_QD__
Fl_Fontdesc *f = fl_fonts + fnum;
if (!f->fontname[0]) {
const char* p = f->name;
@@ -60,12 +57,27 @@ const char* Fl::get_font_name(Fl_Font fnum, int* ap) {
}
if (ap) *ap = f->fontname[ENDOFBUFFER];
return f->fontname;
#elif defined(__APPLE_QUARTZ__)
Fl_Fontdesc *f = fl_fonts + fnum;
if (!f->fontname[0]) {
const char* p = f->name;
if (!p || !*p) {if (ap) *ap = 0; return "";}
strlcpy(f->fontname, p, ENDOFBUFFER);
int type = 0;
if (strstr(f->name, "Bold")) type |= FL_BOLD;
if (strstr(f->name, "Italic")) type |= FL_ITALIC;
f->fontname[ENDOFBUFFER] = (char)type;
}
if (ap) *ap = f->fontname[ENDOFBUFFER];
return f->fontname;
#endif
}
static int fl_free_font = FL_FREE_FONT;
Fl_Font Fl::set_fonts(const char* xstarname) {
#pragma unused ( xstarname )
#ifdef __APPLE_QD__
if (fl_free_font != FL_FREE_FONT)
return (Fl_Font)fl_free_font;
static char styleLU[] = " BIP";
@@ -113,13 +125,35 @@ Fl_Font Fl::set_fonts(const char* xstarname) {
}
FMDisposeFontFamilyIterator( &ffIterator );
return (Fl_Font)fl_free_font;
#elif defined(__APPLE_QUARTZ__)
ATSFontIterator it;
ATSFontIteratorCreate(kATSFontContextGlobal, 0L, 0L, kATSOptionFlagsRestrictedScope, &it);
for (;;) {
ATSFontRef font;
CFStringRef fname = 0;
OSStatus err = ATSFontIteratorNext(it, &font);
if (err!=noErr) break;
ATSFontGetName(font, kATSOptionFlagsDefault, &fname);
char buf[1024];
CFStringGetCString(fname, buf, 1024, kCFStringEncodingASCII);
int i;
for (i=0; i<FL_FREE_FONT; i++) // skip if one of our built-in fonts
if (!strcmp(Fl::get_font_name((Fl_Font)i),buf)) break;
if ( i < FL_FREE_FONT ) continue;
Fl::set_font((Fl_Font)(fl_free_font++), strdup((char*)buf));
}
ATSFontIteratorRelease(&it);
return (Fl_Font)fl_free_font;
#endif
}
static int array[128];
int Fl::get_font_sizes(Fl_Font fnum, int*& sizep) {
Fl_Fontdesc *s = fl_fonts+fnum;
if (!s->name) s = fl_fonts; // empty slot in table, use entry 0
int cnt = 0;
#ifdef __APPLE_QD__
Str255 name;
int len = strlen( s->name );
memcpy(((char*)name)+1, s->name+1, len );
@@ -147,7 +181,6 @@ int Fl::get_font_sizes(Fl_Font fnum, int*& sizep) {
FMFontSize size, pSize = -1;
FMFontFamilyInstanceIterator ffiIterator;
FMCreateFontFamilyInstanceIterator( family, &ffiIterator );
int cnt = 0;
OSStatus listInstances;
for (;;)
{
@@ -163,10 +196,16 @@ int Fl::get_font_sizes(Fl_Font fnum, int*& sizep) {
}
}
FMDisposeFontFamilyInstanceIterator( &ffiIterator );
#elif defined(__APPLE_QUARTZ__)
// ATS supports all font size
array[0] = 0;
sizep = array;
cnt = 1;
#endif
return cnt;
}
//
// End of "$Id: fl_set_fonts_mac.cxx,v 1.1.2.11 2004/08/25 00:20:27 matthiaswm Exp $".
// End of "$Id: fl_set_fonts_mac.cxx,v 1.1.2.12 2004/09/09 00:55:41 matthiaswm Exp $".
//