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Assert that cairo_matrix_invert succeeds rather than ignoring tis return value

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This assertion is safe as an internal consistency check thanks to
the recent checks added to cairo_pattern_set_matrix.
This commit is contained in:
Carl Worth 2007-04-11 01:35:11 -07:00
parent bd0b328f7e
commit 01ac5f1aea
2 changed files with 7 additions and 2 deletions
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4
src/cairo-pdf-surface.c
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@ -983,7 +983,9 @@ _cairo_pdf_surface_emit_surface_pattern (cairo_pdf_surface_t *surface,
* pattern cell. * pattern cell.
*/ */
cairo_p2d = pattern->base.matrix; cairo_p2d = pattern->base.matrix;
cairo_matrix_invert (&cairo_p2d); status = cairo_matrix_invert (&cairo_p2d);
/* cairo_pattern_set_matrix ensures the matrix is invertible */
assert (status == CAIRO_STATUS_SUCCESS);
cairo_matrix_init_identity (&pdf_p2d); cairo_matrix_init_identity (&pdf_p2d);
cairo_matrix_translate (&pdf_p2d, 0.0, surface_extents.height); cairo_matrix_translate (&pdf_p2d, 0.0, surface_extents.height);

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

@ -1726,11 +1726,14 @@ static void
_cairo_ps_surface_emit_surface_pattern (cairo_ps_surface_t *surface, _cairo_ps_surface_emit_surface_pattern (cairo_ps_surface_t *surface,
cairo_surface_pattern_t *pattern) cairo_surface_pattern_t *pattern)
{ {
cairo_status_t status;
double bbox_width, bbox_height; double bbox_width, bbox_height;
double xstep, ystep; double xstep, ystep;
cairo_matrix_t inverse = pattern->base.matrix; cairo_matrix_t inverse = pattern->base.matrix;
cairo_matrix_invert (&inverse); status = cairo_matrix_invert (&inverse);
/* cairo_pattern_set_matrix ensures the matrix is invertible */
assert (status == CAIRO_STATUS_SUCCESS);
if (_cairo_surface_is_meta (pattern->surface)) { if (_cairo_surface_is_meta (pattern->surface)) {
_cairo_output_stream_printf (surface->stream, "/MyPattern {\n"); _cairo_output_stream_printf (surface->stream, "/MyPattern {\n");