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PDF: Execute entire path in user coordinates when stroking so that line params are interpreted correctly

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This commit is contained in:
Keith Packard 2006-04-25 04:04:10 -07:00 • committed by Carl Worth
parent 134c508bf0
commit 8d635a3aa9
1 changed files with 86 additions and 9 deletions
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95
src/cairo-pdf-surface.c
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@ -1353,6 +1353,75 @@ _cairo_pdf_surface_get_extents (void *abstract_surface,
return CAIRO_STATUS_SUCCESS;
}
typedef struct _pdf_stroke {
cairo_output_stream_t *output_stream;
cairo_matrix_t *ctm_inverse;
} pdf_stroke_t;
static cairo_status_t
_cairo_pdf_stroke_move_to (void *closure, cairo_point_t *point)
{
pdf_stroke_t *stroke = closure;
double x = _cairo_fixed_to_double (point->x);
double y = _cairo_fixed_to_double (point->y);
cairo_matrix_transform_point (stroke->ctm_inverse, &x, &y);
_cairo_output_stream_printf (stroke->output_stream,
"%f %f m ", x, y);
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_cairo_pdf_stroke_line_to (void *closure, cairo_point_t *point)
{
pdf_stroke_t *stroke = closure;
double x = _cairo_fixed_to_double (point->x);
double y = _cairo_fixed_to_double (point->y);
cairo_matrix_transform_point (stroke->ctm_inverse, &x, &y);
_cairo_output_stream_printf (stroke->output_stream,
"%f %f l ", x, y);
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_cairo_pdf_stroke_curve_to (void *closure,
cairo_point_t *b,
cairo_point_t *c,
cairo_point_t *d)
{
pdf_stroke_t *stroke = closure;
double bx = _cairo_fixed_to_double (b->x);
double by = _cairo_fixed_to_double (b->y);
double cx = _cairo_fixed_to_double (c->x);
double cy = _cairo_fixed_to_double (c->y);
double dx = _cairo_fixed_to_double (d->x);
double dy = _cairo_fixed_to_double (d->y);
cairo_matrix_transform_point (stroke->ctm_inverse, &bx, &by);
cairo_matrix_transform_point (stroke->ctm_inverse, &cx, &cy);
cairo_matrix_transform_point (stroke->ctm_inverse, &dx, &dy);
_cairo_output_stream_printf (stroke->output_stream,
"%f %f %f %f %f %f c ",
bx, by, cx, cy, dx, dy);
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_cairo_pdf_stroke_close_path (void *closure)
{
pdf_stroke_t *stroke = closure;
_cairo_output_stream_printf (stroke->output_stream,
"h\r\n");
return CAIRO_STATUS_SUCCESS;
}
static cairo_int_status_t
_cairo_pdf_surface_intersect_clip_path (void *dst,
cairo_path_fixed_t *path,
@ -2046,6 +2115,7 @@ _cairo_pdf_surface_stroke (void *abstract_surface,
{
cairo_pdf_surface_t *surface = abstract_surface;
cairo_pdf_document_t *document = surface->document;
pdf_stroke_t stroke;
cairo_status_t status;
if (surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE) {
@ -2069,21 +2139,28 @@ _cairo_pdf_surface_stroke (void *abstract_surface,
assert (document->current_stream != NULL &&
document->current_stream == surface->current_stream);
stroke.output_stream = document->output_stream;
stroke.ctm_inverse = ctm_inverse;
status = _cairo_path_fixed_interpret (path,
CAIRO_DIRECTION_FORWARD,
_cairo_pdf_stroke_move_to,
_cairo_pdf_stroke_line_to,
_cairo_pdf_stroke_curve_to,
_cairo_pdf_stroke_close_path,
&stroke);
_cairo_output_stream_printf (document->output_stream,
"q %f %f %f %f %f %f cm\r\n",
ctm->xx, ctm->yx, ctm->xy, ctm->yy,
ctm->x0, ctm->y0);
status = _cairo_pdf_surface_emit_stroke_style (surface,
document->output_stream,
style);
if (status)
return status;
status = _cairo_path_fixed_interpret (path,
CAIRO_DIRECTION_FORWARD,
_cairo_pdf_path_move_to,
_cairo_pdf_path_line_to,
_cairo_pdf_path_curve_to,
_cairo_pdf_path_close_path,
document->output_stream);
_cairo_output_stream_printf (document->output_stream, "S\r\n");
_cairo_output_stream_printf (document->output_stream, "S Q\r\n");
return status;
}