fltk/src/fl_font_mac.cxx

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//
// "$Id: fl_font_mac.cxx,v 1.1.2.15 2004/04/11 04:39:00 easysw Exp $"
//
// MacOS font selection routines for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998-2004 by Bill Spitzak and others.
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Library General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Library General Public License for more details.
//
// You should have received a copy of the GNU Library General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
// USA.
//
// Please report all bugs and problems to "fltk-bugs@fltk.org".
//
//: MeasureText, FontMetrics, WidthTabHandle, GetSysFont, SysFontSize
//: TextSize, TextFont
//: GetFNum (theName: Str255; VAR familyID: Integer);
//: FUNCTION FMSwapFont (inRec: FMInput): FMOutPtr;
//: SetFractEnable
Fl_FontSize::Fl_FontSize(const char* name, int Size) {
knowMetrics = 0;
switch (*name++) {
case 'I': face = italic; break;
case 'P': face = italic | bold; break;
case 'B': face = bold; break;
default: face = 0; break;
}
unsigned char fn[80];
fn[0] = strlen(name); strcpy((char*)(fn+1), name);
GetFNum(fn, &font);
size = Size;
FMInput fIn = { font, size, face, 0, 0, { 1, 1}, { 1, 1} };
FMOutput *fOut = FMSwapFont(&fIn);
ascent = fOut->ascent; //: the following three lines give only temporary aproimations
descent = fOut->descent;
for (int i=0; i<256; i++) width[i] = fOut->widMax;
#if HAVE_GL
listbase = 0;
#endif
minsize = maxsize = size;
}
Fl_FontSize* fl_fontsize = 0L;
Fl_FontSize::~Fl_FontSize() {
/*
#if HAVE_GL
// ++ todo: remove OpenGL font alocations
// Delete list created by gl_draw(). This is not done by this code
// as it will link in GL unnecessarily. There should be some kind
// of "free" routine pointer, or a subclass?
// if (listbase) {
// int base = font->min_char_or_byte2;
// int size = font->max_char_or_byte2-base+1;
// int base = 0; int size = 256;
// glDeleteLists(listbase+base,size);
// }
#endif
*/
if (this == fl_fontsize) fl_fontsize = 0;
}
////////////////////////////////////////////////////////////////
static Fl_Fontdesc built_in_table[] = {
{" Arial"},
{"BArial"},
{"IArial"},
{"PArial"},
{" Courier New"},
{"BCourier New"},
{"ICourier New"},
{"PCourier New"},
{" Times New Roman"},
{"BTimes New Roman"},
{"ITimes New Roman"},
{"PTimes New Roman"},
{" Symbol"},
{" Chicago"},
{"BChicago"},
{" Webdings"},
};
Fl_Fontdesc* fl_fonts = built_in_table;
void fl_font(Fl_FontSize* s) {
fl_fontsize = s;
if (fl_window) SetPort( GetWindowPort(fl_window) );
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!)
FontInfo fi; GetFontInfo(&fi);
fl_fontsize->ascent = fi.ascent;
fl_fontsize->descent = fi.descent;
FMetricRec mr; FontMetrics(&mr);
short *f = (short*)*mr.wTabHandle; //: get the char size table
for (int i=0; i<256; i++) fl_fontsize->width[i] = f[2*i];
fl_fontsize->knowMetrics = 1;
}
}
static Fl_FontSize* find(int fnum, int size) {
Fl_Fontdesc* s = fl_fonts+fnum;
if (!s->name) s = fl_fonts; // use 0 if fnum undefined
Fl_FontSize* f;
for (f = s->first; f; f = f->next)
if (f->minsize <= size && f->maxsize >= size) return f;
f = new Fl_FontSize(s->name, size);
f->next = s->first;
s->first = f;
return f;
}
////////////////////////////////////////////////////////////////
// Public interface:
int fl_font_ = 0;
int fl_size_ = 0;
void fl_font(int fnum, int size) {
fl_font_ = fnum;
fl_size_ = size;
fl_font(find(fnum, size));
}
int fl_height() {
return fl_fontsize->ascent+fl_fontsize->descent;
}
int fl_descent() {
return fl_fontsize->descent;
}
double fl_width(const char* c, int n) {
return (double)TextWidth( c, 0, n );
}
// todo : fl_width returns wrong results for OS X
double fl_width(uchar c) {
return (double)TextWidth( &c, 0, 1 );
}
// MRS: The default character set is MacRoman, which is different from
// ISO-8859-1; in FLTK 2.0 we'll use UTF-8 with Quartz...
static uchar macroman_lut[256] = {
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95,
96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111,
112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127,
128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143,
144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159,
202, 193, 162, 163, 164, 180, 166, 164, 172, 169, 187, 199, 194, 173, 168, 248,
161, 177, 178, 179, 171, 181, 166, 225, 252, 185, 188, 200, 188, 189, 190, 192,
203, 231, 229, 204, 128, 129, 174, 130, 233, 131, 230, 232, 237, 234, 235, 236,
208, 132, 241, 238, 239, 205, 133, 215, 175, 244, 242, 243, 134, 221, 222, 167,
136, 135, 137, 139, 138, 140, 190, 141, 143, 142, 144, 145, 147, 146, 148, 149,
240, 150, 152, 151, 153, 155, 154, 214, 191, 157, 156, 158, 159, 253, 254, 216
};
void fl_draw(const char* str, int n, int x, int y) {
int i; // Looping var
uchar buf[1024], // Temporary buffer
*bufptr; // Pointer into buffer
// First convert string to MacRoman encoding...
if (n > (int)sizeof(buf))
n = (int)sizeof(buf);
for (i = n, bufptr = buf; i > 0; i --)
*bufptr++ = macroman_lut[*str++ & 255];
// Then draw it...
MoveTo(x, y);
DrawText((const char *)buf, 0, n);
}
//
// End of "$Id: fl_font_mac.cxx,v 1.1.2.15 2004/04/11 04:39:00 easysw Exp $".
//