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wine/dlls/wineps.drv/type1.c
Alexandre Julliard 62cf70d363 wineps: Don't crash on missing loca OTF table.
2011-11-26 16:29:50 +01:00

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/*
* PostScript driver Type1 font functions
*
* Copyright 2002 Huw D M Davies for CodeWeavers
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "config.h"
#include "wine/port.h"
#include <string.h>
#include <stdlib.h>
#include <stdarg.h>
#include <stdio.h>
#include <assert.h>
#include "windef.h"
#include "winbase.h"
#include "wingdi.h"
#include "winternl.h"
#include "psdrv.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(psdrv);
struct tagTYPE1 {
DWORD glyph_sent_size;
BOOL *glyph_sent;
DWORD emsize;
};
#define GLYPH_SENT_INC 128
/* Type 1 font commands */
enum t1_cmds {
rlineto = 5,
rrcurveto = 8,
closepath = 9,
hsbw = 13,
endchar = 14,
rmoveto = 21
};
#define MS_MAKE_TAG( _x1, _x2, _x3, _x4 ) \
( ( (DWORD)_x4 << 24 ) | \
( (DWORD)_x3 << 16 ) | \
( (DWORD)_x2 << 8 ) | \
(DWORD)_x1 )
#ifdef WORDS_BIGENDIAN
static inline WORD get_be_word(const void *p) { return *(WORD*)p; }
static inline DWORD get_be_dword(const void *p) { return *(DWORD*)p; }
#else
static inline WORD get_be_word(const void *p) { return RtlUshortByteSwap(*(WORD*)p); }
static inline DWORD get_be_dword(const void *p) { return RtlUlongByteSwap(*(DWORD*)p); }
#endif
TYPE1 *T1_download_header(PHYSDEV dev, char *ps_name, RECT *bbox, UINT emsize)
{
char *buf;
TYPE1 *t1;
char dict[] = /* name, emsquare, fontbbox */
"25 dict begin\n"
" /FontName /%s def\n"
" /Encoding 256 array 0 1 255{1 index exch /.notdef put} for def\n"
" /PaintType 0 def\n"
" /FontMatrix [1 %d div 0 0 1 %d div 0 0] def\n"
" /FontBBox [%d %d %d %d] def\n"
" /FontType 1 def\n"
" /Private 7 dict begin\n"
" /RD {string currentfile exch readhexstring pop} def\n"
" /ND {def} def\n"
" /NP {put} def\n"
" /MinFeature {16 16} def\n"
" /BlueValues [] def\n"
" /password 5839 def\n"
" /lenIV -1 def\n"
" currentdict end def\n"
" currentdict dup /Private get begin\n"
" /CharStrings 256 dict begin\n"
" /.notdef 4 RD 8b8b0d0e ND\n"
" currentdict end put\n"
" end\n"
"currentdict end dup /FontName get exch definefont pop\n";
t1 = HeapAlloc(GetProcessHeap(), 0, sizeof(*t1));
t1->emsize = emsize;
t1->glyph_sent_size = GLYPH_SENT_INC;
t1->glyph_sent = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
t1->glyph_sent_size *
sizeof(*(t1->glyph_sent)));
buf = HeapAlloc(GetProcessHeap(), 0, sizeof(dict) + strlen(ps_name) +
100);
sprintf(buf, dict, ps_name, t1->emsize, t1->emsize,
bbox->left, bbox->bottom, bbox->right, bbox->top);
PSDRV_WriteSpool(dev, buf, strlen(buf));
HeapFree(GetProcessHeap(), 0, buf);
return t1;
}
typedef struct {
BYTE *str;
int len, max_len;
} STR;
static STR *str_init(int sz)
{
STR *str = HeapAlloc(GetProcessHeap(), 0, sizeof(*str));
str->max_len = sz;
str->str = HeapAlloc(GetProcessHeap(), 0, str->max_len);
str->len = 0;
return str;
}
static void str_free(STR *str)
{
HeapFree(GetProcessHeap(), 0, str->str);
HeapFree(GetProcessHeap(), 0, str);
}
static void str_add_byte(STR *str, BYTE b)
{
if(str->len == str->max_len) {
str->max_len *= 2;
str->str = HeapReAlloc(GetProcessHeap(), 0, str->str, str->max_len);
}
str->str[str->len++] = b;
}
static void str_add_num(STR *str, int num)
{
if(num <= 107 && num >= -107)
str_add_byte(str, num + 139);
else if(num >= 108 && num <= 1131) {
str_add_byte(str, ((num - 108) >> 8) + 247);
str_add_byte(str, (num - 108) & 0xff);
} else if(num <= -108 && num >= -1131) {
num = -num;
str_add_byte(str, ((num - 108) >> 8) + 251);
str_add_byte(str, (num - 108) & 0xff);
} else {
str_add_byte(str, 0xff);
str_add_byte(str, (num >> 24) & 0xff);
str_add_byte(str, (num >> 16) & 0xff);
str_add_byte(str, (num >> 8) & 0xff);
str_add_byte(str, (num & 0xff));
}
}
static void str_add_point(STR *str, POINT pt, POINT *curpos)
{
str_add_num(str, pt.x - curpos->x);
str_add_num(str, pt.y - curpos->y);
*curpos = pt;
}
static void str_add_cmd(STR *str, enum t1_cmds cmd)
{
str_add_byte(str, (BYTE)cmd);
}
static int str_get_bytes(STR *str, BYTE **b)
{
*b = str->str;
return str->len;
}
static BOOL get_hmetrics(HDC hdc, DWORD index, short *lsb, WORD *advance)
{
BYTE hhea[36];
WORD num_of_long;
BYTE buf[4];
*lsb = 0;
*advance = 0;
GetFontData(hdc, MS_MAKE_TAG('h','h','e','a'), 0, hhea, sizeof(hhea));
num_of_long = get_be_word(hhea + 34);
if(index < num_of_long)
{
if(GetFontData(hdc, MS_MAKE_TAG('h','m','t','x'), index * 4, buf, 4) != 4) return FALSE;
*advance = get_be_word(buf);
*lsb = (signed short)get_be_word(buf + 2);
}
else
{
if(GetFontData(hdc, MS_MAKE_TAG('h','m','t','x'), (num_of_long - 1) * 4, buf, 2) != 2) return FALSE;
*advance = get_be_word(buf);
if(GetFontData(hdc, MS_MAKE_TAG('h','m','t','x'), num_of_long * 4 + (index - num_of_long) * 2, buf, 2) != 2) return FALSE;
*lsb = (signed short)get_be_word(buf);
}
return TRUE;
}
static BOOL get_glyf_pos(HDC hdc, DWORD index, DWORD *start, DWORD *end)
{
DWORD len;
BYTE *head, *loca;
WORD loca_format;
BOOL ret = FALSE;
*start = *end = 0;
len = GetFontData(hdc, MS_MAKE_TAG('h','e','a','d'), 0, NULL, 0);
if (len == GDI_ERROR) return FALSE;
head = HeapAlloc(GetProcessHeap(), 0, len);
GetFontData(hdc, MS_MAKE_TAG('h','e','a','d'), 0, head, len);
loca_format = get_be_word(head + 50);
len = GetFontData(hdc, MS_MAKE_TAG('l','o','c','a'), 0, NULL, 0);
if (len == GDI_ERROR)
{
len = GetFontData(hdc, MS_MAKE_TAG('C','F','F',' '), 0, NULL, 0);
if (len != GDI_ERROR) FIXME( "CFF tables not supported yet\n" );
else ERR( "loca table not found\n" );
HeapFree(GetProcessHeap(), 0, head);
return FALSE;
}
loca = HeapAlloc(GetProcessHeap(), 0, len);
GetFontData(hdc, MS_MAKE_TAG('l','o','c','a'), 0, loca, len);
switch(loca_format) {
case 0:
*start = get_be_word(((WORD*)loca) + index);
*start <<= 1;
*end = get_be_word(((WORD*)loca) + index + 1);
*end <<= 1;
ret = TRUE;
break;
case 1:
*start = get_be_dword(((DWORD*)loca) + index);
*end = get_be_dword(((DWORD*)loca) + index + 1);
ret = TRUE;
break;
default:
ERR("Unknown loca_format %d\n", loca_format);
}
HeapFree(GetProcessHeap(), 0, loca);
HeapFree(GetProcessHeap(), 0, head);
return ret;
}
static BYTE *get_glyph_data(HDC hdc, DWORD index)
{
DWORD start, end, len;
BYTE *data;
if(!get_glyf_pos(hdc, index, &start, &end))
return NULL;
len = end - start;
if(!len) return NULL;
data = HeapAlloc(GetProcessHeap(), 0, len);
if(!data) return NULL;
if(GetFontData(hdc, MS_MAKE_TAG('g','l','y','f'), start, data, len) != len)
{
HeapFree(GetProcessHeap(), 0, data);
return NULL;
}
return data;
}
typedef struct
{
WORD num_conts;
WORD *end_pts; /* size_is(num_conts) */
BYTE *flags; /* size_is(end_pts[num_conts - 1] + 1) */
POINT *pts; /* size_is(end_pts[num_conts - 1] + 1) */
short lsb;
WORD advance;
} glyph_outline;
static inline WORD pts_in_outline(glyph_outline *outline)
{
WORD num_pts = 0;
if(outline->num_conts)
num_pts = outline->end_pts[outline->num_conts - 1] + 1;
return num_pts;
}
static BOOL append_glyph_outline(HDC hdc, DWORD index, glyph_outline *outline);
static BOOL append_simple_glyph(BYTE *data, glyph_outline *outline)
{
USHORT num_pts, start_pt = 0, ins_len;
WORD *end_pts;
int num_conts, start_cont, i;
BYTE *ptr;
int x, y;
start_cont = outline->num_conts;
start_pt = pts_in_outline(outline);
num_conts = get_be_word(data);
end_pts = (WORD*)(data + 10);
num_pts = get_be_word(end_pts + num_conts - 1) + 1;
ins_len = get_be_word(end_pts + num_conts);
ptr = (BYTE*)(end_pts + num_conts) + 2 + ins_len;
if(outline->num_conts)
{
outline->end_pts = HeapReAlloc(GetProcessHeap(), 0, outline->end_pts, (start_cont + num_conts) * sizeof(*outline->end_pts));
outline->flags = HeapReAlloc(GetProcessHeap(), 0, outline->flags, start_pt + num_pts);
outline->pts = HeapReAlloc(GetProcessHeap(), 0, outline->pts, (start_pt + num_pts) * sizeof(*outline->pts));
}
else
{
outline->end_pts = HeapAlloc(GetProcessHeap(), 0, num_conts * sizeof(*outline->end_pts));
outline->flags = HeapAlloc(GetProcessHeap(), 0, num_pts);
outline->pts = HeapAlloc(GetProcessHeap(), 0, num_pts * sizeof(*outline->pts));
}
outline->num_conts += num_conts;
for(i = 0; i < num_conts; i++)
outline->end_pts[start_cont + i] = start_pt + get_be_word(end_pts + i);
for(i = 0; i < num_pts; i++)
{
outline->flags[start_pt + i] = *ptr;
if(*ptr & 8)
{
BYTE count = *++ptr;
while(count)
{
i++;
outline->flags[start_pt + i] = *(ptr - 1);
count--;
}
}
ptr++;
}
x = 0;
for(i = 0; i < num_pts; i++)
{
INT delta;
delta = 0;
if(outline->flags[start_pt + i] & 2)
{
delta = *ptr++;
if((outline->flags[start_pt + i] & 0x10) == 0)
delta = -delta;
}
else if((outline->flags[start_pt + i] & 0x10) == 0)
{
delta = (signed short)get_be_word(ptr);
ptr += 2;
}
x += delta;
outline->pts[start_pt + i].x = x;
}
y = 0;
for(i = 0; i < num_pts; i++)
{
INT delta;
delta = 0;
if(outline->flags[start_pt + i] & 4)
{
delta = *ptr++;
if((outline->flags[start_pt + i] & 0x20) == 0)
delta = -delta;
}
else if((outline->flags[start_pt + i] & 0x20) == 0)
{
delta = (signed short)get_be_word(ptr);
ptr += 2;
}
y += delta;
outline->pts[start_pt + i].y = y;
}
return TRUE;
}
/* Some flags for composite glyphs. See glyf table in OT spec */
#define ARG_1_AND_2_ARE_WORDS (1L << 0)
#define ARGS_ARE_XY_VALUES (1L << 1)
#define WE_HAVE_A_SCALE (1L << 3)
#define MORE_COMPONENTS (1L << 5)
#define WE_HAVE_AN_X_AND_Y_SCALE (1L << 6)
#define WE_HAVE_A_TWO_BY_TWO (1L << 7)
#define USE_MY_METRICS (1L << 9)
static BOOL append_complex_glyph(HDC hdc, const BYTE *data, glyph_outline *outline)
{
const BYTE *ptr = data;
WORD flags, index;
short arg1, arg2;
WORD scale_xx = 1 << 14, scale_xy = 0, scale_yx = 0, scale_yy = 1 << 14;
WORD start_pt, end_pt;
ptr += 10;
do
{
flags = get_be_word(ptr);
ptr += 2;
index = get_be_word(ptr);
ptr += 2;
if(flags & ARG_1_AND_2_ARE_WORDS)
{
arg1 = (short)get_be_word(ptr);
ptr += 2;
arg2 = (short)get_be_word(ptr);
ptr += 2;
}
else
{
arg1 = *(char*)ptr++;
arg2 = *(char*)ptr++;
}
if(flags & WE_HAVE_A_SCALE)
{
scale_xx = scale_yy = get_be_word(ptr);
ptr += 2;
}
else if(flags & WE_HAVE_AN_X_AND_Y_SCALE)
{
scale_xx = get_be_word(ptr);
ptr += 2;
scale_yy = get_be_word(ptr);
ptr += 2;
}
else if(flags & WE_HAVE_A_TWO_BY_TWO)
{
scale_xx = get_be_word(ptr);
ptr += 2;
scale_xy = get_be_word(ptr);
ptr += 2;
scale_yx = get_be_word(ptr);
ptr += 2;
scale_yy = get_be_word(ptr);
ptr += 2;
}
if ((flags & (WE_HAVE_A_SCALE | WE_HAVE_AN_X_AND_Y_SCALE | WE_HAVE_A_TWO_BY_TWO)) &&
(scale_xx != 1 << 14 || scale_yy != 1 << 14 || scale_xy || scale_yx))
FIXME( "unhandled scaling %x,%x,%x,%x of glyph %x\n",
scale_xx, scale_xy, scale_yx, scale_yy, index );
start_pt = pts_in_outline(outline);
append_glyph_outline(hdc, index, outline);
end_pt = pts_in_outline(outline);
if((flags & ARGS_ARE_XY_VALUES) == 0)
{
WORD orig_pt = arg1, new_pt = arg2;
new_pt += start_pt;
if(orig_pt >= start_pt || new_pt >= end_pt) return FALSE;
arg1 = outline->pts[orig_pt].x - outline->pts[new_pt].x;
arg2 = outline->pts[orig_pt].y - outline->pts[new_pt].y;
}
while(start_pt < end_pt)
{
outline->pts[start_pt].x += arg1;
outline->pts[start_pt].y += arg2;
start_pt++;
}
if(flags & USE_MY_METRICS)
get_hmetrics(hdc, index, &outline->lsb, &outline->advance);
} while(flags & MORE_COMPONENTS);
return TRUE;
}
static BOOL append_glyph_outline(HDC hdc, DWORD index, glyph_outline *outline)
{
BYTE *glyph_data;
SHORT num_conts;
glyph_data = get_glyph_data(hdc, index);
if(!glyph_data) return TRUE;
num_conts = get_be_word(glyph_data);
if(num_conts == -1)
append_complex_glyph(hdc, glyph_data, outline);
else if(num_conts > 0)
append_simple_glyph(glyph_data, outline);
HeapFree(GetProcessHeap(), 0, glyph_data);
return TRUE;
}
static inline BOOL on_point(const glyph_outline *outline, WORD pt)
{
return outline->flags[pt] & 1;
}
BOOL T1_download_glyph(PHYSDEV dev, DOWNLOAD *pdl, DWORD index, char *glyph_name)
{
DWORD len;
WORD cur_pt, cont;
char *buf;
TYPE1 *t1;
STR *charstring;
BYTE *bytes;
POINT curpos;
glyph_outline outline;
static const char glyph_def_begin[] =
"/%s findfont dup\n"
"/Private get begin\n"
"/CharStrings get begin\n"
"/%s %d RD\n";
static const char glyph_def_end[] =
"ND\n"
"end end\n";
TRACE("%d %s\n", index, glyph_name);
assert(pdl->type == Type1);
t1 = pdl->typeinfo.Type1;
if(index < t1->glyph_sent_size) {
if(t1->glyph_sent[index])
return TRUE;
} else {
t1->glyph_sent_size = (index / GLYPH_SENT_INC + 1) * GLYPH_SENT_INC;
t1->glyph_sent = HeapReAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
t1->glyph_sent,
t1->glyph_sent_size * sizeof(*(t1->glyph_sent)));
}
outline.num_conts = 0;
outline.flags = NULL;
outline.end_pts = NULL;
outline.pts = NULL;
get_hmetrics(dev->hdc, index, &outline.lsb, &outline.advance);
if(!append_glyph_outline(dev->hdc, index, &outline)) return FALSE;
charstring = str_init(100);
curpos.x = outline.lsb;
curpos.y = 0;
str_add_num(charstring, curpos.x);
str_add_num(charstring, outline.advance);
str_add_cmd(charstring, hsbw);
for(cur_pt = 0, cont = 0; cont < outline.num_conts; cont++)
{
POINT start_pos = outline.pts[cur_pt++];
WORD end_pt = outline.end_pts[cont];
POINT curve_pts[3] = {{0,0},{0,0},{0,0}};
str_add_point(charstring, start_pos, &curpos);
str_add_cmd(charstring, rmoveto);
for(; cur_pt <= end_pt; cur_pt++)
{
if(on_point(&outline, cur_pt))
{
str_add_point(charstring, outline.pts[cur_pt], &curpos);
str_add_cmd(charstring, rlineto);
}
else
{
BOOL added_next = FALSE;
/* temporarily store the start pt in curve_pts[0] */
if(on_point(&outline, cur_pt - 1))
curve_pts[0] = outline.pts[cur_pt - 1];
else /* last pt was off curve too, so the previous curve's
end pt was constructed */
curve_pts[0] = curve_pts[2];
if(cur_pt != end_pt)
{
if(on_point(&outline, cur_pt + 1))
{
curve_pts[2] = outline.pts[cur_pt + 1];
added_next = TRUE;
}
else /* next pt is off curve too, so construct the end pt from the
average of the two */
{
curve_pts[2].x = (outline.pts[cur_pt].x + outline.pts[cur_pt + 1].x + 1) / 2;
curve_pts[2].y = (outline.pts[cur_pt].y + outline.pts[cur_pt + 1].y + 1) / 2;
}
}
else /* last pt of the contour is off curve, so the end pt is the
start pt of the contour */
curve_pts[2] = start_pos;
curve_pts[0].x = (curve_pts[0].x + 2 * outline.pts[cur_pt].x + 1) / 3;
curve_pts[0].y = (curve_pts[0].y + 2 * outline.pts[cur_pt].y + 1) / 3;
curve_pts[1].x = (curve_pts[2].x + 2 * outline.pts[cur_pt].x + 1) / 3;
curve_pts[1].y = (curve_pts[2].y + 2 * outline.pts[cur_pt].y + 1) / 3;
str_add_point(charstring, curve_pts[0], &curpos);
str_add_point(charstring, curve_pts[1], &curpos);
str_add_point(charstring, curve_pts[2], &curpos);
str_add_cmd(charstring, rrcurveto);
if(added_next) cur_pt++;
}
}
str_add_cmd(charstring, closepath);
}
str_add_cmd(charstring, endchar);
HeapFree(GetProcessHeap(), 0, outline.pts);
HeapFree(GetProcessHeap(), 0, outline.end_pts);
HeapFree(GetProcessHeap(), 0, outline.flags);
buf = HeapAlloc(GetProcessHeap(), 0, sizeof(glyph_def_begin) +
strlen(pdl->ps_name) + strlen(glyph_name) + 100);
sprintf(buf, "%%%%glyph %04x\n", index);
PSDRV_WriteSpool(dev, buf, strlen(buf));
len = str_get_bytes(charstring, &bytes);
sprintf(buf, glyph_def_begin, pdl->ps_name, glyph_name, len);
PSDRV_WriteSpool(dev, buf, strlen(buf));
PSDRV_WriteBytes(dev, bytes, len);
sprintf(buf, glyph_def_end);
PSDRV_WriteSpool(dev, buf, strlen(buf));
str_free(charstring);
t1->glyph_sent[index] = TRUE;
HeapFree(GetProcessHeap(), 0, buf);
return TRUE;
}
void T1_free(TYPE1 *t1)
{
HeapFree(GetProcessHeap(), 0, t1->glyph_sent);
HeapFree(GetProcessHeap(), 0, t1);
return;
}
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