/* Get a Type 42 character metrics and set the cache device. */
int
zchar42_set_cache(i_ctx_t *i_ctx_p, gs_font_base *pbfont, ref *cnref,
uint glyph_index, op_proc_t cont, op_proc_t *exec_cont, bool put_lsb)
{ double sbw[4];
double w[2];
int present;
int code = zchar_get_metrics(pbfont, cnref, sbw);
if (code < 0)
return code;
present = code;
if (present == metricsNone) {
float sbw42[4];
int i;
code = gs_type42_wmode_metrics((gs_font_type42 *)pbfont,
glyph_index, false, sbw42);
if (code < 0)
return code;
present = metricsSideBearingAndWidth;
for (i = 0; i < 4; ++i)
sbw[i] = sbw42[i];
w[0] = sbw[2];
w[1] = sbw[3];
if (gs_rootfont(igs)->WMode) { /* for vertically-oriented metrics */
code = gs_type42_wmode_metrics((gs_font_type42 *)pbfont,
glyph_index,
true, sbw42);
if (code < 0) { /* no vertical metrics */
if (pbfont->FontType == ft_CID_TrueType) {
sbw[0] = sbw[2] / 2;
sbw[1] = pbfont->FontBBox.q.y;
sbw[2] = 0;
sbw[3] = pbfont->FontBBox.p.y - pbfont->FontBBox.q.y;
}
} else {
sbw[0] = sbw[2] / 2;
sbw[1] = (pbfont->FontBBox.q.y + pbfont->FontBBox.p.y - sbw42[3]) / 2;
sbw[2] = sbw42[2];
sbw[3] = sbw42[3];
}
}
} else {
w[0] = sbw[2];
w[1] = sbw[3];
}
return zchar_set_cache(i_ctx_p, pbfont, cnref,
(put_lsb && present == metricsSideBearingAndWidth ?
sbw : NULL),
w, &pbfont->FontBBox,
cont, exec_cont,
gs_rootfont(igs)->WMode ? sbw : NULL);
}
/*
* Check the path against FontBBox before drawing. The original operands
* of type1execchar are still on the o-stack.
* Returns exec_cont - a function, which must be called by caller after this function.
*/
static int
bbox_draw(i_ctx_t *i_ctx_p, int (*draw)(gs_state *), op_proc_t *exec_cont)
{
os_ptr op = osp;
gs_rect bbox;
gs_font *pfont;
gs_text_enum_t *penum;
gs_font_base * pbfont;
gs_font_type1 * pfont1;
gs_type1exec_state cxs;
int code;
if (igs->in_cachedevice < 2) /* not caching */
return nobbox_draw(i_ctx_p, draw);
if ((code = font_param(op - 3, &pfont)) < 0)
return code;
penum = op_show_find(i_ctx_p);
if (penum == 0 || !font_uses_charstrings(pfont))
return_error(e_undefined);
if ((code = gs_pathbbox(igs, &bbox)) < 0) {
/*
* If the matrix is singular, all user coordinates map onto a
* straight line. Don't bother rendering the character at all.
*/
if (code == e_undefinedresult) {
pop(4);
gs_newpath(igs);
return 0;
}
return code;
}
if (draw == gs_stroke) {
/* Expand the bounding box by the line width. */
float width = gs_currentlinewidth(igs) * 1.41422;
bbox.p.x -= width, bbox.p.y -= width;
bbox.q.x += width, bbox.q.y += width;
}
pbfont = (gs_font_base *)pfont;
if (rect_within(bbox, pbfont->FontBBox)) /* within bounds */
return nobbox_draw(i_ctx_p, draw);
/* Enlarge the FontBBox to save work in the future. */
rect_merge(pbfont->FontBBox, bbox);
/* Dismantle everything we've done, and start over. */
gs_text_retry(penum);
pfont1 = (gs_font_type1 *) pfont;
if ((penum->FontBBox_as_Metrics2.x == 0 &&
penum->FontBBox_as_Metrics2.y == 0) ||
gs_rootfont(igs)->WMode == 0 ) {
code = zchar_get_metrics(pbfont, op - 1, cxs.sbw);
if (code < 0)
return code;
cxs.present = code;
cxs.use_FontBBox_as_Metrics2 = false;
} else {
cxs.sbw[0] = penum->FontBBox_as_Metrics2.x / 2;
cxs.sbw[1] = penum->FontBBox_as_Metrics2.y;
cxs.sbw[2] = 0;
cxs.sbw[3] = -penum->FontBBox_as_Metrics2.x; /* Sic! */
cxs.use_FontBBox_as_Metrics2 = true;
cxs.present = metricsSideBearingAndWidth;
}
code = type1_exec_init(&cxs.cis, penum, igs, pfont1);
if (code < 0)
return code;
cxs.char_bbox = pfont1->FontBBox;
code = type1exec_bbox(i_ctx_p, penum, &cxs, pfont, exec_cont);
return code;
}
static int
charstring_execchar_aux(i_ctx_t *i_ctx_p, gs_text_enum_t *penum, gs_font *pfont)
{
os_ptr op = osp;
gs_font_base *const pbfont = (gs_font_base *) pfont;
gs_font_type1 *const pfont1 = (gs_font_type1 *) pfont;
const gs_type1_data *pdata;
gs_type1exec_state cxs;
gs_type1_state *const pcis = &cxs.cis;
gs_rect FontBBox = pfont1->FontBBox;
int code;
if (penum->current_font->FontType == ft_CID_encrypted) {
if (FontBBox.q.x <= FontBBox.p.x && FontBBox.q.y <= FontBBox.p.y) {
gs_font_cid0 *pfcid0 = (gs_font_cid0 *)penum->current_font;
FontBBox = pfcid0->FontBBox;
}
}
pdata = &pfont1->data;
/*
* Any reasonable implementation would execute something like
* 1 setmiterlimit 0 setlinejoin 0 setlinecap
* here, but the Adobe implementations don't.
*
* If this is a stroked font, set the stroke width.
*/
if (pfont->PaintType)
gs_setlinewidth(igs, pfont->StrokeWidth);
check_estack(3); /* for continuations */
/*
* Execute the definition of the character.
*/
if (r_is_proc(op))
return zchar_exec_char_proc(i_ctx_p);
/*
* The definition must be a Type 1 CharString.
* Note that we do not require read access: this is deliberate.
*/
check_type(*op, t_string);
if (r_size(op) <= max(pdata->lenIV, 0))
return_error(e_invalidfont);
/*
* In order to make character oversampling work, we must
* set up the cache before calling .type1addpath.
* To do this, we must get the bounding box from the FontBBox,
* and the width from the CharString or the Metrics.
* If the FontBBox isn't valid, we can't do any of this.
*/
if ((penum->FontBBox_as_Metrics2.x == 0 &&
penum->FontBBox_as_Metrics2.y == 0) ||
gs_rootfont(igs)->WMode == 0 ) {
code = zchar_get_metrics(pbfont, op - 1, cxs.sbw);
if (code < 0)
return code;
cxs.present = code;
cxs.use_FontBBox_as_Metrics2 = false;
} else { /* pass here if FontType==9,11 && WMode==1*/
cxs.sbw[0] = penum->FontBBox_as_Metrics2.x / 2;
cxs.sbw[1] = penum->FontBBox_as_Metrics2.y;
cxs.sbw[2] = 0;
cxs.sbw[3] = -penum->FontBBox_as_Metrics2.x; /* Sic! */
cxs.use_FontBBox_as_Metrics2 = true;
cxs.present = metricsNone;
}
/* Establish a current point. */
code = gs_moveto(igs, 0.0, 0.0);
if (code < 0)
return code;
code = type1_exec_init(pcis, penum, igs, pfont1);
if (code < 0)
return code;
gs_type1_set_callback_data(pcis, &cxs);
if (FontBBox.q.x > FontBBox.p.x &&
FontBBox.q.y > FontBBox.p.y
) {
/* The FontBBox appears to be valid. */
op_proc_t exec_cont = 0;
cxs.char_bbox = pfont1->FontBBox;
code = type1exec_bbox(i_ctx_p, penum, &cxs, pfont, &exec_cont);
if (code >= 0 && exec_cont != 0)
code = (*exec_cont)(i_ctx_p);
return code;
} else {
/* The FontBBox is not valid */
const ref *opstr = op;
ref other_subr;
const gs_matrix * pctm = &ctm_only(igs);
/* First, check for singular CTM */
if (pctm->xx * pctm->yy == pctm->xy * pctm->yx) {
/* The code below won't be able to find the FontBBox but we
* don't need it anyway. Set an empty box and consider it valid.
*/
op_proc_t exec_cont = 0;
cxs.char_bbox.p.x = 0;
cxs.char_bbox.p.y = 0;
cxs.char_bbox.q.x = 0;
cxs.char_bbox.q.y = 0;
code = type1exec_bbox(i_ctx_p, penum, &cxs, pfont, &exec_cont);
if (code >= 0 && exec_cont != 0)
code = (*exec_cont)(i_ctx_p);
return code;
}
/* Now we create the path first, then do the setcachedevice.
* If we are oversampling (in this case, only for anti-
* aliasing, not just to improve quality), we have to
* create the path twice, since we can't know the
* oversampling factor until after setcachedevice.
*/
switch (cxs.present) {
case metricsSideBearingAndWidth: {
gs_point pt;
pt.x = cxs.sbw[0], pt.y = cxs.sbw[1];
gs_type1_set_lsb(pcis, &pt);
}
/* fall through */
case metricsWidthOnly: {
gs_point pt;
pt.x = cxs.sbw[2], pt.y = cxs.sbw[3];
gs_type1_set_width(pcis, &pt);
}
}
/* Continue interpreting. */
icont:
code = type1_continue_dispatch(i_ctx_p, &cxs, opstr, &other_subr, 4);
op = osp; /* OtherSubrs might change it */
switch (code) {
case 0: /* all done */
return nobbox_finish(i_ctx_p, &cxs);
default: /* code < 0, error */
return code;
case type1_result_callothersubr: /* unknown OtherSubr */
return type1_call_OtherSubr(i_ctx_p, &cxs, nobbox_continue,
&other_subr);
case type1_result_sbw: /* [h]sbw, just continue */
switch (cxs.present) {
case metricsNone:
cxs.sbw[0] = fixed2float(pcis->lsb.x);
cxs.sbw[1] = fixed2float(pcis->lsb.y);
/* fall through */
case metricsWidthOnly:
cxs.sbw[2] = fixed2float(pcis->width.x);
cxs.sbw[3] = fixed2float(pcis->width.y);
}
opstr = 0;
goto icont;
}
}
}
