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Add PDF operators function to reset any remembered state

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This commit is contained in:
Adrian Johnson 2008-07-08 22:00:15 +09:30
parent 9b302fac63
commit 837bf73f08
4 changed files with 27 additions and 0 deletions
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3
src/cairo-pdf-operators-private.h
View file

@ -110,6 +110,9 @@ _cairo_pdf_operators_set_cairo_to_pdf_matrix (cairo_pdf_operators_t *pdf_operato
cairo_private cairo_status_t
_cairo_pdf_operators_flush (cairo_pdf_operators_t *pdf_operators);
cairo_private void
_cairo_pdf_operators_reset (cairo_pdf_operators_t *pdf_operators);
cairo_private cairo_int_status_t
_cairo_pdf_operators_clip (cairo_pdf_operators_t *pdf_operators,
cairo_path_fixed_t *path,

15
src/cairo-pdf-operators.c
View file

@ -121,6 +121,21 @@ _cairo_pdf_operators_flush (cairo_pdf_operators_t *pdf_operators)
return status;
}
/* Reset the known graphics state of the PDF consumer. ie no
* assumptions will be made about the state. The next time a
* particular graphics state is required (eg line width) the state
* operator is always emitted and then remembered for subsequent
* operatations.
*
* This should be called when starting a new stream or after emitting
* the 'Q' operator (where pdf-operators functions were called inside
* the q/Q pair).
*/
void
_cairo_pdf_operators_reset (cairo_pdf_operators_t *pdf_operators)
{
}
/* A word wrap stream can be used as a filter to do word wrapping on
* top of an existing output stream. The word wrapping is quite
* simple, using isspace to determine characters that separate

4
src/cairo-pdf-surface.c
View file

@ -870,6 +870,7 @@ _cairo_pdf_surface_open_stream (cairo_pdf_surface_t *surface,
surface->pdf_stream.length = length;
surface->pdf_stream.compressed = compressed;
surface->current_pattern_is_solid_color = FALSE;
_cairo_pdf_operators_reset (&surface->pdf_operators);
_cairo_output_stream_printf (surface->output,
"%d 0 obj\n"
@ -1006,6 +1007,7 @@ _cairo_pdf_surface_open_group (cairo_pdf_surface_t *surface,
surface->group_stream.active = TRUE;
surface->current_pattern_is_solid_color = FALSE;
_cairo_pdf_operators_reset (&surface->pdf_operators);
surface->group_stream.mem_stream = _cairo_memory_stream_create ();
@ -2722,6 +2724,7 @@ _cairo_pdf_surface_unselect_pattern (cairo_pdf_surface_t *surface)
return status;
_cairo_output_stream_printf (surface->output, "Q\n");
_cairo_pdf_operators_reset (&surface->pdf_operators);
}
surface->select_pattern_gstate_saved = FALSE;
@ -2783,6 +2786,7 @@ _cairo_pdf_surface_intersect_clip_path (void *abstract_surface,
_cairo_output_stream_printf (surface->output, "Q q\n");
surface->current_pattern_is_solid_color = FALSE;
_cairo_pdf_operators_reset (&surface->pdf_operators);
return CAIRO_STATUS_SUCCESS;
}

5
src/cairo-ps-surface.c
View file

@ -2031,6 +2031,7 @@ _cairo_ps_surface_emit_meta_surface (cairo_ps_surface_t *surface,
surface->width = meta_extents.width;
surface->height = meta_extents.height;
surface->current_pattern_is_solid_color = FALSE;
_cairo_pdf_operators_reset (&surface->pdf_operators);
cairo_matrix_init (&surface->cairo_to_ps, 1, 0, 0, -1, 0, surface->height);
_cairo_pdf_operators_set_cairo_to_pdf_matrix (&surface->pdf_operators,
&surface->cairo_to_ps);
@ -2064,6 +2065,7 @@ _cairo_ps_surface_emit_meta_surface (cairo_ps_surface_t *surface,
surface->width = old_width;
surface->height = old_height;
surface->current_pattern_is_solid_color = FALSE;
_cairo_pdf_operators_reset (&surface->pdf_operators);
surface->cairo_to_ps = old_cairo_to_ps;
status = _cairo_surface_set_clip (&surface->base, old_clip);
if (status)
@ -2901,6 +2903,7 @@ _cairo_ps_surface_intersect_clip_path (void *abstract_surface,
_cairo_output_stream_printf (stream, "Q q\n");
surface->current_pattern_is_solid_color = FALSE;
_cairo_pdf_operators_reset (&surface->pdf_operators);
return CAIRO_STATUS_SUCCESS;
}
@ -3079,6 +3082,7 @@ _cairo_ps_surface_fill (void *abstract_surface,
return status;
_cairo_output_stream_printf (surface->stream, "Q\n");
_cairo_pdf_operators_reset (&surface->pdf_operators);
} else {
status = _cairo_ps_surface_emit_pattern (surface, source, op);
if (status == CAIRO_INT_STATUS_NOTHING_TO_DO)
@ -3207,6 +3211,7 @@ _cairo_ps_surface_set_bounding_box (void *abstract_surface,
surface->bbox_y2 = y2;
}
surface->current_pattern_is_solid_color = FALSE;
_cairo_pdf_operators_reset (&surface->pdf_operators);
return _cairo_output_stream_get_status (surface->stream);
}