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/*
* Copyright (C) 2000, Matias Atria
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdlib.h>
#include "mdvi.h"
#include "private.h"
static ListHead fontlist;
extern char *_mdvi_fallback_font;
extern void vf_free_macros(DviFont *);
#define finfo search.info
#define TYPENAME(font) \
((font)->finfo ? (font)->finfo->name : "none")
void font_print(void)
{
DviFont *font;
message("Fonts registered (%d):\n", fontlist.count);
LIST_FOREACH(font, DviFont, &fontlist) {
message("%s: %dx%ddpi, scaled %.2f of %.2fpt, type `%s' at %p\n",
font->fontname, font->hdpi, font->vdpi,
(double)font->scale / 1048576,
(double)font->design / 1048576,
font->search.id < 0 ? "unknown" : font->search.info->name,
font);
message(" %sloaded, filename: %s\n",
font->chars ? "" : "not ", font->filename);
if(font->links) {
message(" in use (%d links), %d glyphs [%d, %d]\n",
font->links, FONT_GLYPH_COUNT(font),
font->loc, font->hic);
if(font->subfonts) {
DviFontRef *ref;
message(" subfonts:\n");
for(ref = font->subfonts; ref; ref = ref->next) {
message(" %s (id %d) at %p\n",
ref->ref->fontname,
ref->fontid, ref->ref);
}
}
} else
message(" not used\n");
}
}
int font_reopen(DviFont *font)
{
if(font->in)
fseek(font->in, (long)0, SEEK_SET);
else if((font->in = fopen(font->filename, "r")) == NULL) {
DEBUG((DBG_FILES, "reopen(%s) -> Error\n", font->filename));
return -1;
}
DEBUG((DBG_FILES, "reopen(%s) -> Ok.\n", font->filename));
return 0;
}
/* used from context: params and device */
static int load_font_file(DviParams *params, DviFont *font)
{
int status;
if(SEARCH_DONE(font->search))
return -1;
if(font->in == NULL && font_reopen(font) < 0)
return -1;
DEBUG((DBG_FONTS, "%s: loading %s font from `%s'\n",
font->fontname,
font->finfo->name, font->filename));
do {
status = font->finfo->load(params, font);
} while(status < 0 && mdvi_font_retry(params, font) == 0);
if(status < 0)
return -1;
if(font->in) {
fclose(font->in);
font->in = NULL;
}
DEBUG((DBG_FONTS, "reload_font(%s) -> %s\n",
font->fontname, status < 0 ? "Error" : "Ok"));
return 0;
}
void font_drop_one(DviFontRef *ref)
{
DviFont *font;
font = ref->ref;
xfree(ref);
/* drop all children */
for(ref = font->subfonts; ref; ref = ref->next) {
/* just adjust the reference counts */
ref->ref->links--;
}
if(--font->links == 0) {
/*
* this font doesn't have any more references, but
* we still keep it around in case a virtual font
* requests it.
*/
if(font->in) {
fclose(font->in);
font->in = NULL;
}
if(LIST(font) != fontlist.tail) {
/* move it to the end of the list */
listh_remove(&fontlist, LIST(font));
listh_append(&fontlist, LIST(font));
}
}
DEBUG((DBG_FONTS, "%s: reference dropped, %d more left\n",
font->fontname, font->links));
}
void font_drop_chain(DviFontRef *head)
{
DviFontRef *ptr;
for(; (ptr = head); ) {
head = ptr->next;
font_drop_one(ptr);
}
}
int font_free_unused(DviDevice *dev)
{
DviFont *font, *next;
int count = 0;
DEBUG((DBG_FONTS, "destroying unused fonts\n"));
for(font = (DviFont *)fontlist.head; font; font = next) {
DviFontRef *ref;
next = font->next;
if(font->links)
continue;
count++;
DEBUG((DBG_FONTS, "removing unused %s font `%s'\n",
TYPENAME(font), font->fontname));
listh_remove(&fontlist, LIST(font));
if(font->in)
fclose(font->in);
/* get rid of subfonts (but can't use `drop_chain' here) */
for(; (ref = font->subfonts); ) {
font->subfonts = ref->next;
xfree(ref);
}
/* remove this font */
font_reset_font_glyphs(dev, font, MDVI_FONTSEL_GLYPH);
/* let the font destroy its private data */
if(font->finfo->freedata)
font->finfo->freedata(font);
/* destroy characters */
if(font->chars)
xfree(font->chars);
xfree(font->fontname);
xfree(font->filename);
xfree(font);
}
DEBUG((DBG_FONTS, "%d unused fonts removed\n", count));
return count;
}
/* used from context: params and device */
DviFontRef *
font_reference(
DviParams *params, /* rendering parameters */
Int32 id, /* external id number */
const char *name, /* font name */
Int32 sum, /* checksum (from DVI of VF) */
int hdpi, /* resolution */
int vdpi,
Int32 scale) /* scaling factor (from DVI or VF) */
{
DviFont *font;
DviFontRef *ref;
/* see if there is a font with the same characteristics */
for(font = (DviFont *)fontlist.head; font; font = font->next) {
if(strcmp(name, font->fontname) == 0
&& (!sum || !font->checksum || font->checksum == sum)
&& font->hdpi == hdpi
&& font->vdpi == vdpi
&& font->scale == scale)
break;
}
/* try to load the font */
if(font == NULL) {
font = mdvi_add_font(name, sum, hdpi, vdpi, scale);
if(font == NULL)
return NULL;
listh_append(&fontlist, LIST(font));
}
if(!font->links && !font->chars && load_font_file(params, font) < 0) {
DEBUG((DBG_FONTS, "font_reference(%s) -> Error\n", name));
return NULL;
}
ref = xalloc(DviFontRef);
ref->ref = font;
font->links++;
ref->fontid = id;
if(LIST(font) != fontlist.head) {
listh_remove(&fontlist, LIST(font));
listh_prepend(&fontlist, LIST(font));
}
DEBUG((DBG_FONTS, "font_reference(%s) -> %d links\n",
font->fontname, font->links));
return ref;
}
void font_transform_glyph(DviOrientation orient, DviGlyph *g)
{
BITMAP *map;
int x, y;
map = (BITMAP *)g->data;
if(MDVI_GLYPH_ISEMPTY(map))
map = NULL;
/* put the glyph in the right orientation */
switch(orient) {
case MDVI_ORIENT_TBLR:
break;
case MDVI_ORIENT_TBRL:
g->x = g->w - g->x;
if(map) bitmap_flip_horizontally(map);
break;
case MDVI_ORIENT_BTLR:
g->y = g->h - g->y;
if(map) bitmap_flip_vertically(map);
break;
case MDVI_ORIENT_BTRL:
g->x = g->w - g->x;
g->y = g->h - g->y;
if(map) bitmap_flip_diagonally(map);
break;
case MDVI_ORIENT_RP90:
if(map) bitmap_rotate_counter_clockwise(map);
y = g->y;
x = g->w - g->x;
g->x = y;
g->y = x;
SWAPINT(g->w, g->h);
break;
case MDVI_ORIENT_RM90:
if(map) bitmap_rotate_clockwise(map);
y = g->h - g->y;
x = g->x;
g->x = y;
g->y = x;
SWAPINT(g->w, g->h);
break;
case MDVI_ORIENT_IRP90:
if(map) bitmap_flip_rotate_counter_clockwise(map);
y = g->y;
x = g->x;
g->x = y;
g->y = x;
SWAPINT(g->w, g->h);
break;
case MDVI_ORIENT_IRM90:
if(map) bitmap_flip_rotate_clockwise(map);
y = g->h - g->y;
x = g->w - g->x;
g->x = y;
g->y = x;
SWAPINT(g->w, g->h);
break;
}
}
static int load_one_glyph(DviContext *dvi, DviFont *font, int code)
{
BITMAP *map;
DviFontChar *ch;
int status;
#ifndef NODEBUG
ch = FONTCHAR(font, code);
DEBUG((DBG_GLYPHS, "loading glyph code %d in %s (at %u)\n",
code, font->fontname, ch->offset));
#endif
if(font->finfo->getglyph == NULL) {
/* font type does not need to load glyphs (e.g. vf) */
return 0;
}
status = font->finfo->getglyph(&dvi->params, font, code);
if(status < 0)
return -1;
/* get the glyph again (font->chars may have changed) */
ch = FONTCHAR(font, code);
#ifndef NODEBUG
map = (BITMAP *)ch->glyph.data;
if(DEBUGGING(BITMAP_DATA)) {
DEBUG((DBG_BITMAP_DATA,
"%s: new %s bitmap for character %d:\n",
font->fontname, TYPENAME(font), code));
if(MDVI_GLYPH_ISEMPTY(map))
DEBUG((DBG_BITMAP_DATA, "blank bitmap\n"));
else
bitmap_print(stderr, map);
}
#endif
/* check if we have to scale it */
if(!font->finfo->scalable && font->hdpi != font->vdpi) {
int hs, vs, d;
/* we scale it ourselves */
d = Max(font->hdpi, font->vdpi);
hs = d / font->hdpi;
vs = d / font->vdpi;
if(ch->width && ch->height && (hs > 1 || vs > 1)) {
int h, v;
DviGlyph glyph;
DEBUG((DBG_FONTS,
"%s: scaling glyph %d to resolution %dx%d\n",
font->fontname, code, font->hdpi, font->vdpi));
h = dvi->params.hshrink;
v = dvi->params.vshrink;
d = dvi->params.density;
dvi->params.hshrink = hs;
dvi->params.vshrink = vs;
dvi->params.density = 50;
/* shrink it */
font->finfo->shrink0(dvi, font, ch, &glyph);
/* restore parameters */
dvi->params.hshrink = h;
dvi->params.vshrink = v;
dvi->params.density = d;
/* update glyph data */
if(!MDVI_GLYPH_ISEMPTY(ch->glyph.data))
bitmap_destroy((BITMAP *)ch->glyph.data);
ch->glyph.data = glyph.data;
ch->glyph.x = glyph.x;
ch->glyph.y = glyph.y;
ch->glyph.w = glyph.w;
ch->glyph.h = glyph.h;
}
}
font_transform_glyph(dvi->params.orientation, &ch->glyph);
return 0;
}
DviFontChar *font_get_glyph(DviContext *dvi, DviFont *font, int code)
{
DviFontChar *ch;
again:
/* if we have not loaded the font yet, do so now */
if(!font->chars && load_font_file(&dvi->params, font) < 0)
return NULL;
/* get the unscaled glyph, maybe loading it from disk */
ch = FONTCHAR(font, code);
if(!ch || !glyph_present(ch))
return NULL;
if(!ch->loaded && load_one_glyph(dvi, font, code) == -1) {
if(font->chars == NULL) {
/* we need to try another font class */
goto again;
}
return NULL;
}
/* yes, we have to do this again */
ch = FONTCHAR(font, code);
/* Got the glyph. If we also have the right scaled glyph, do no more */
if(!ch->width || !ch->height ||
font->finfo->getglyph == NULL ||
(dvi->params.hshrink == 1 && dvi->params.vshrink == 1))
return ch;
/* If the glyph is empty, we just need to shrink the box */
if(ch->missing || MDVI_GLYPH_ISEMPTY(ch->glyph.data)) {
if(MDVI_GLYPH_UNSET(ch->shrunk.data))
mdvi_shrink_box(dvi, font, ch, &ch->shrunk);
return ch;
} else if(MDVI_ENABLED(dvi, MDVI_PARAM_ANTIALIASED)) {
if(ch->grey.data &&
ch->fg == dvi->curr_fg &&
ch->bg == dvi->curr_bg)
return ch;
if(ch->grey.data) {
if(dvi->device.free_image)
dvi->device.free_image(ch->grey.data);
ch->grey.data = NULL;
}
font->finfo->shrink1(dvi, font, ch, &ch->grey);
} else if(!ch->shrunk.data)
font->finfo->shrink0(dvi, font, ch, &ch->shrunk);
return ch;
}
void font_reset_one_glyph(DviDevice *dev, DviFontChar *ch, int what)
{
if(!glyph_present(ch))
return;
if(what & MDVI_FONTSEL_BITMAP) {
if(MDVI_GLYPH_NONEMPTY(ch->shrunk.data))
bitmap_destroy((BITMAP *)ch->shrunk.data);
ch->shrunk.data = NULL;
}
if(what & MDVI_FONTSEL_GREY) {
if(MDVI_GLYPH_NONEMPTY(ch->grey.data)) {
if(dev->free_image)
dev->free_image(ch->grey.data);
}
ch->grey.data = NULL;
}
if(what & MDVI_FONTSEL_GLYPH) {
if(MDVI_GLYPH_NONEMPTY(ch->glyph.data))
bitmap_destroy((BITMAP *)ch->glyph.data);
ch->glyph.data = NULL;
ch->loaded = 0;
}
}
void font_reset_font_glyphs(DviDevice *dev, DviFont *font, int what)
{
int i;
DviFontChar *ch;
if(what & MDVI_FONTSEL_GLYPH)
what |= MDVI_FONTSEL_BITMAP|MDVI_FONTSEL_GREY;
if(font->subfonts) {
DviFontRef *ref;
for(ref = font->subfonts; ref; ref = ref->next)
font_reset_font_glyphs(dev, ref->ref, what);
}
if(font->in) {
DEBUG((DBG_FILES, "close(%s)\n", font->filename));
fclose(font->in);
font->in = NULL;
}
if(font->finfo->getglyph == NULL)
return;
DEBUG((DBG_FONTS, "resetting glyphs in font `%s'\n", font->fontname));
for(ch = font->chars, i = font->loc; i <= font->hic; ch++, i++) {
if(glyph_present(ch))
font_reset_one_glyph(dev, ch, what);
}
if((what & MDVI_FONTSEL_GLYPH) && font->finfo->reset)
font->finfo->reset(font);
}
void font_reset_chain_glyphs(DviDevice *dev, DviFontRef *head, int what)
{
DviFontRef *ref;
for(ref = head; ref; ref = ref->next)
font_reset_font_glyphs(dev, ref->ref, what);
}
static int compare_refs(const void *p1, const void *p2)
{
return ((*(DviFontRef **)p1)->fontid - (*(DviFontRef **)p2)->fontid);
}
void font_finish_definitions(DviContext *dvi)
{
int count;
DviFontRef **map, *ref;
/* first get rid of unused fonts */
font_free_unused(&dvi->device);
if(dvi->fonts == NULL) {
warning(_("%s: no fonts defined\n"), dvi->filename);
return;
}
map = xnalloc(DviFontRef *, dvi->nfonts);
for(count = 0, ref = dvi->fonts; ref; ref = ref->next)
map[count++] = ref;
/* sort the array by font id */
qsort(map, dvi->nfonts, sizeof(DviFontRef *), compare_refs);
dvi->fontmap = map;
}
DviFontRef *font_find_flat(DviContext *dvi, Int32 id)
{
DviFontRef *ref;
for(ref = dvi->fonts; ref; ref = ref->next)
if(ref->fontid == id)
break;
return ref;
}
DviFontRef *font_find_mapped(DviContext *dvi, Int32 id)
{
int lo, hi, n;
DviFontRef **map;
/* do a binary search */
lo = 0; hi = dvi->nfonts;
map = dvi->fontmap;
while(lo < hi) {
int sign;
n = (hi + lo) >> 1;
sign = (map[n]->fontid - id);
if(sign == 0)
break;
else if(sign < 0)
lo = n;
else
hi = n;
}
if(lo >= hi)
return NULL;
return map[n];
}
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