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* make cairo_quartz_surface_to_quartz() return NULL if it's not a valid quartz surface and add null-check at call sites. * fix a couple of leaks under OOM * fix a warning about missing initializers for cairo_quartz_surface_backend b=397293 r+sr+a=vladimir

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This commit is contained in:
mats.palmgren@bredband.net 2007-10-25 08:49:25 -07:00
parent 20da02cff4
commit e65548fd8d
1 changed files with 20 additions and 1 deletions
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21
gfx/cairo/cairo/src/cairo-quartz-surface.c
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@ -470,6 +470,13 @@ _cairo_quartz_surface_to_quartz (cairo_surface_t *target, cairo_surface_t *pat_s
cairo_surface_destroy(ref_type);
quartz_surf = (cairo_quartz_surface_t *) new_surf;
if (new_surf &&
cairo_surface_get_type (new_surf) != CAIRO_SURFACE_TYPE_QUARTZ) {
ND((stderr, "got a non-quartz surface, format=%d width=%u height=%u type=%d\n", cairo_surface_get_type (pat_surf), rect.width, rect.height, cairo_surface_get_type (new_surf)));
cairo_surface_destroy (new_surf);
quartz_surf = NULL;
}
} else {
/* If it's a quartz surface, we can try to see if it's a CGBitmapContext;
* we do this when we call CGBitmapContextCreateImage below.
@ -490,6 +497,9 @@ SurfacePatternDrawFunc (void *info, CGContextRef context)
cairo_surface_t *pat_surf = spat->surface;
cairo_quartz_surface_t *quartz_surf = _cairo_quartz_surface_to_quartz (NULL, pat_surf);
if (!quartz_surf)
return;
CGImageRef img = CGBitmapContextCreateImage (quartz_surf->cgContext);
CGRect imageBounds;
@ -694,6 +704,9 @@ _cairo_quartz_setup_source (cairo_quartz_surface_t *surface,
cairo_surface_pattern_t *spat = (cairo_surface_pattern_t *) source;
cairo_surface_t *pat_surf = spat->surface;
cairo_quartz_surface_t *quartz_surf = _cairo_quartz_surface_to_quartz ((cairo_surface_t *) surface, pat_surf);
if (!quartz_surf)
return DO_UNSUPPORTED;
CGImageRef img = CGBitmapContextCreateImage (quartz_surf->cgContext);
cairo_matrix_t m = spat->base.matrix;
cairo_rectangle_int_t extents;
@ -1095,8 +1108,10 @@ _cairo_quartz_surface_clone_similar (void *abstract_surface,
cairo_quartz_surface_create (new_format,
CGImageGetWidth (quartz_image),
CGImageGetHeight (quartz_image));
if (!new_surface || new_surface->base.status)
if (!new_surface || new_surface->base.status) {
CGImageRelease (quartz_image);
return CAIRO_INT_STATUS_UNSUPPORTED;
}
CGContextSetCompositeOperation (new_surface->cgContext,
kPrivateCGCompositeCopy);
@ -1599,6 +1614,9 @@ static const struct _cairo_surface_backend cairo_quartz_surface_backend = {
#endif /* CAIRO_HAS_ATSUI_FONT */
NULL, /* snapshot */
NULL, /* is_similar */
NULL, /* reset */
NULL /* fill_stroke */
};
static cairo_quartz_surface_t *
@ -1770,6 +1788,7 @@ cairo_quartz_surface_create (cairo_format_t format,
if (!cgc) {
_cairo_error (CAIRO_STATUS_NO_MEMORY);
free (imageData);
return (cairo_surface_t*) &_cairo_surface_nil;
}