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/* Copyright (C) 1996, 1997, 1998, 1999 Aladdin Enterprises. All rights reserved.
* This software is licensed to a single customer by Artifex Software Inc.
* under the terms of a specific OEM agreement.
*/
/*$RCSfile$ $Revision$ */
/* Type 42 character display operator */
#include "ghost.h"
#include "oper.h"
#include "gsmatrix.h"
#include "gspaint.h" /* for gs_fill, gs_stroke */
#include "gspath.h"
#include "gxfixed.h"
#include "gxfont.h"
#include "gxfont42.h"
#include "gxistate.h"
#include "gxpath.h"
#include "gxtext.h"
#include "gzstate.h" /* only for ->path */
#include "dstack.h" /* only for systemdict */
#include "estack.h"
#include "ichar.h"
#include "icharout.h"
#include "ifont.h" /* for font_param */
#include "igstate.h"
#include "store.h"
/* <font> <code|name> <name> <glyph_index> .type42execchar - */
private int type42_fill(P1(i_ctx_t *));
private int type42_stroke(P1(i_ctx_t *));
private int
ztype42execchar(i_ctx_t *i_ctx_p)
{
os_ptr op = osp;
gs_font *pfont;
int code = font_param(op - 3, &pfont);
gs_font_base *const pbfont = (gs_font_base *) pfont;
gs_text_enum_t *penum = op_show_find(i_ctx_p);
int present;
double sbw[4];
if (code < 0)
return code;
if (penum == 0 ||
(pfont->FontType != ft_TrueType &&
pfont->FontType != ft_CID_TrueType)
)
return_error(e_undefined);
/*
* Any reasonable implementation would execute something like
* 1 setmiterlimit 0 setlinejoin 0 setlinecap
* here, but apparently the Adobe implementations aren't reasonable.
*
* 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 42 glyph index.
* Note that we do not require read access: this is deliberate.
*/
check_type(*op, t_integer);
check_ostack(3); /* for lsb values */
present = zchar_get_metrics(pbfont, op - 1, sbw);
if (present < 0)
return present;
/* Establish a current point. */
code = gs_moveto(igs, 0.0, 0.0);
if (code < 0)
return code;
/* Get the metrics and set the cache device. */
if (present == metricsNone) {
float sbw42[4];
int i;
code = gs_type42_get_metrics((gs_font_type42 *) pfont,
(uint) op->value.intval, sbw42);
if (code < 0)
return code;
for (i = 0; i < 4; ++i)
sbw[i] = sbw42[i];
}
return zchar_set_cache(i_ctx_p, pbfont, op - 1,
(present == metricsSideBearingAndWidth ?
sbw : NULL),
sbw + 2, &pbfont->FontBBox,
type42_fill, type42_stroke);
}
/* Continue after a CDevProc callout. */
private int type42_finish(P2(i_ctx_t *i_ctx_p,
int (*cont)(P1(gs_state *))));
private int
type42_fill(i_ctx_t *i_ctx_p)
{
return type42_finish(i_ctx_p, gs_fill);
}
private int
type42_stroke(i_ctx_t *i_ctx_p)
{
return type42_finish(i_ctx_p, gs_stroke);
}
/* <font> <code|name> <name> <glyph_index> <sbx> <sby> %type42_{fill|stroke} - */
/* <font> <code|name> <name> <glyph_index> %type42_{fill|stroke} - */
private int
type42_finish(i_ctx_t *i_ctx_p, int (*cont) (P1(gs_state *)))
{
os_ptr op = osp;
gs_font *pfont;
int code;
gs_text_enum_t *penum = op_show_find(i_ctx_p);
double sbxy[2];
gs_point sbpt;
gs_point *psbpt = 0;
os_ptr opc = op;
if (!r_has_type(op - 3, t_dictionary)) {
check_op(6);
code = num_params(op, 2, sbxy);
if (code < 0)
return code;
sbpt.x = sbxy[0];
sbpt.y = sbxy[1];
psbpt = &sbpt;
opc -= 2;
}
check_type(*opc, t_integer);
code = font_param(opc - 3, &pfont);
if (code < 0)
return code;
if (penum == 0 || (pfont->FontType != ft_TrueType &&
pfont->FontType != ft_CID_TrueType)
)
return_error(e_undefined);
/*
* We have to disregard penum->pis and penum->path, and render to
* the current gstate and path. This is a design bug that we will
* have to address someday!
*/
code = gs_type42_append((uint)opc->value.intval, (gs_imager_state *)igs,
igs->path, &penum->log2_scale,
(penum->text.operation & TEXT_DO_ANY_CHARPATH) != 0,
pfont->PaintType, (gs_font_type42 *)pfont);
if (code < 0)
return code;
pop((psbpt == 0 ? 4 : 6));
return (*cont)(igs);
}
/* ------ Initialization procedure ------ */
const op_def zchar42_op_defs[] =
{
{"4.type42execchar", ztype42execchar},
op_def_end(0)
};
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