void
pdf_error(PDF *p, int type, const char *fmt, ...)
{
static const char fn[] = "pdf_error";
char msg[2048];
va_list ap;
va_start(ap, fmt);
vsprintf(msg, fmt, ap);
PDF_TRACE(("\n[%s\t(pdf(%p), %d (%s), \"%s\");]\n",
fn, (void *) p, type, pdf_error_names[type], msg));
/*
* We catch non-fatals here since user-supplied error handlers
* don't know about the debug level.
*/
if (PDF_GET_STATE(p) != pdf_state_error /* avoid recursive errors */
&& (type != PDF_NonfatalError || ((PDF *)p)->debug['w']))
{
PDF_PUSH_STATE(p, fn, pdf_state_error);
(p->errorhandler)(p, type, msg);
/* If the error handler returns the error was non-fatal */
PDF_POP_STATE(p, fn);
}
PDF_TRACE(("[error handler returned]\n"));
va_end(ap);
}
static void
pdf_begin_path(PDF *p)
{
if (PDF_GET_STATE(p) == pdf_state_path)
return;
pdf_end_text(p);
PDF_PUSH_STATE(p, "pdf_begin_path", pdf_state_path);
}
/* Start a new pattern definition. */
PDFLIB_API int PDFLIB_CALL
PDF_begin_pattern(
PDF *p,
float width,
float height,
float xstep,
float ystep,
int painttype)
{
static const char fn[] = "PDF_begin_pattern";
PDF_TRACE(("%s\t(pdf[%p], %f, %f, %f, %f, %d);\n",
fn, (void *) p, width, height, xstep, ystep, painttype));
if (PDF_SANITY_CHECK_FAILED(p))
return -1;
PDF_CHECK_SCOPE(p, fn, pdf_state_document);
if (width <= 0 || height <= 0)
pdf_error(p, PDF_ValueError, "Pattern size must be positive");
/* Acrobat 3 doesn't display patterns on screen so we disable it */
if (p->compatibility == PDF_1_2)
pdf_error(p, PDF_RuntimeError,
"Patterns not fully supported in Acrobat 3");
if (painttype != 1 && painttype != 2)
pdf_error(p, PDF_ValueError,
"Bad pattern paint type %d in PDF_begin_pattern", painttype);
if (p->pattern_number == p->pattern_capacity)
pdf_grow_pattern(p);
p->pattern[p->pattern_number].obj_id = pdf_begin_obj(p, NEW_ID);
p->pattern[p->pattern_number].painttype = painttype;
p->height = height;
p->width = width;
p->thumb_id = BAD_ID;
PDF_PUSH_STATE(p, fn, pdf_state_pattern);
p->next_content = 0;
p->contents = c_page;
p->procset = 0;
p->sl = 0;
pdf_init_tstate(p);
pdf_init_gstate(p);
pdf_init_cstate(p);
pdf_begin_dict(p); /* pattern dict*/
p->res_id = pdf_alloc_id(p);
pdf_puts(p, "/PatternType 1\n");
/* colored or uncolored pattern */
pdf_printf(p, "/PaintType %d\n", painttype);
pdf_puts(p, "/TilingType 1\n"); /* constant spacing */
pdf_printf(p, "/BBox[0 0 %f %f]\n", p->width, p->height);
pdf_printf(p, "/XStep %f\n", xstep);
pdf_printf(p, "/YStep %f\n", ystep);
pdf_printf(p, "/Resources %ld 0 R\n", p->res_id);
p->contents_length_id = pdf_alloc_id(p);
pdf_printf(p, "/Length %ld 0 R\n", p->contents_length_id);
if (p->compresslevel)
pdf_puts(p, "/Filter/FlateDecode\n");
pdf_end_dict(p); /* pattern dict*/
pdf_begin_stream(p);
pdf_compress_init(p);
p->start_contents_pos = pdf_tell(p);
p->next_content++;
return p->pattern_number++;
}
