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[cairo-paginated-surface] Propagate backend errors to the surface.

Browse source 
If we call a srface backend function directly, then it our
responsibility to propagate any fatal errors to the surface.
This commit is contained in:
Chris Wilson 2007-10-05 17:15:29 +01:00
parent 3da62fdd28
commit cf2f994a31
1 changed files with 34 additions and 23 deletions
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57
src/cairo-paginated-surface.c
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@ -76,8 +76,10 @@ _cairo_paginated_surface_create (cairo_surface_t *target,
cairo_paginated_surface_t *surface;
surface = malloc (sizeof (cairo_paginated_surface_t));
if (surface == NULL)
if (surface == NULL) {
_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
goto FAIL;
}
_cairo_surface_init (&surface->base, &cairo_paginated_surface_backend,
content);
@ -106,7 +108,6 @@ _cairo_paginated_surface_create (cairo_surface_t *target,
FAIL_CLEANUP_SURFACE:
free (surface);
FAIL:
_cairo_error_throw (CAIRO_STATUS_NO_MEMORY);
return (cairo_surface_t*) &_cairo_surface_nil;
}
@ -129,11 +130,12 @@ _cairo_paginated_surface_get_target (cairo_surface_t *surface)
}
cairo_status_t
_cairo_paginated_surface_set_size (cairo_surface_t *surface,
_cairo_paginated_surface_set_size (cairo_surface_t *surface,
int width,
int height)
{
cairo_paginated_surface_t *paginated_surface;
cairo_status_t status;
assert (_cairo_surface_is_paginated (surface));
@ -145,8 +147,9 @@ _cairo_paginated_surface_set_size (cairo_surface_t *surface,
cairo_surface_destroy (paginated_surface->meta);
paginated_surface->meta = _cairo_meta_surface_create (paginated_surface->content,
width, height);
if (cairo_surface_status (paginated_surface->meta))
return cairo_surface_status (paginated_surface->meta);
status = cairo_surface_status (paginated_surface->meta);
if (status)
return status;
return CAIRO_STATUS_SUCCESS;
}
@ -284,6 +287,9 @@ _paint_page (cairo_paginated_surface_t *surface)
cairo_status_t status;
cairo_bool_t has_supported, has_page_fallback, has_finegrained_fallback;
if (surface->target->status)
return surface->target->status;
analysis = _cairo_analysis_surface_create (surface->target,
surface->width, surface->height);
if (analysis == NULL)
@ -294,8 +300,7 @@ _paint_page (cairo_paginated_surface_t *surface)
if (status || analysis->status) {
if (status == CAIRO_STATUS_SUCCESS)
status = analysis->status;
cairo_surface_destroy (analysis);
return status;
goto FAIL;
}
if (surface->backend->set_bounding_box) {
@ -303,10 +308,8 @@ _paint_page (cairo_paginated_surface_t *surface)
_cairo_analysis_surface_get_bounding_box (analysis, &bbox);
status = surface->backend->set_bounding_box (surface->target, &bbox);
if (status) {
cairo_surface_destroy (analysis);
return status;
}
if (status)
goto FAIL;
}
surface->backend->set_paginated_mode (surface->target, CAIRO_PAGINATED_MODE_RENDER);
@ -339,7 +342,7 @@ _paint_page (cairo_paginated_surface_t *surface)
surface->target,
CAIRO_META_REGION_NATIVE);
if (status)
return status;
goto FAIL;
}
if (has_page_fallback)
@ -352,7 +355,7 @@ _paint_page (cairo_paginated_surface_t *surface)
box.p2.y = surface->height;
status = _paint_fallback_image (surface, &box);
if (status)
return status;
goto FAIL;
}
if (has_finegrained_fallback)
@ -368,34 +371,39 @@ _paint_page (cairo_paginated_surface_t *surface)
CAIRO_GSTATE_TOLERANCE_DEFAULT,
CAIRO_ANTIALIAS_DEFAULT);
if (status)
return status;
goto FAIL;
region = _cairo_analysis_surface_get_unsupported (analysis);
status = _cairo_region_get_boxes (region, &num_boxes, &boxes);
if (status)
return status;
goto FAIL;
for (i = 0; i < num_boxes; i++) {
status = _paint_fallback_image (surface, &boxes[i]);
if (status) {
_cairo_region_boxes_fini (region, boxes);
return status;
goto FAIL;
}
}
_cairo_region_boxes_fini (region, boxes);
}
FAIL:
cairo_surface_destroy (analysis);
return status;
return _cairo_surface_set_error (surface->target, status);
}
static cairo_status_t
_start_page (cairo_paginated_surface_t *surface)
{
if (surface->target->status)
return surface->target->status;
if (! surface->backend->start_page)
return CAIRO_STATUS_SUCCESS;
return (surface->backend->start_page) (surface->target);
return _cairo_surface_set_error (surface->target,
surface->backend->start_page (surface->target));
}
static cairo_int_status_t
@ -442,15 +450,18 @@ _cairo_paginated_surface_show_page (void *abstract_surface)
if (status)
return status;
if (cairo_surface_status (surface->meta))
return cairo_surface_status (surface->meta);
status = cairo_surface_status (surface->meta);
if (status)
return status;
cairo_surface_destroy (surface->meta);
surface->meta = _cairo_meta_surface_create (surface->content,
surface->width, surface->height);
if (cairo_surface_status (surface->meta))
return cairo_surface_status (surface->meta);
surface->width,
surface->height);
status = cairo_surface_status (surface->meta);
if (status)
return status;
surface->page_num++;
surface->page_is_blank = TRUE;