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cairo/src/cairo-debug.c
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/* cairo - a vector graphics library with display and print output | |
* | |
* Copyright © 2005 Red Hat, Inc. | |
* | |
* This library is free software; you can redistribute it and/or | |
* modify it either under the terms of the GNU Lesser General Public | |
* License version 2.1 as published by the Free Software Foundation | |
* (the "LGPL") or, at your option, under the terms of the Mozilla | |
* Public License Version 1.1 (the "MPL"). If you do not alter this | |
* notice, a recipient may use your version of this file under either | |
* the MPL or the LGPL. | |
* | |
* You should have received a copy of the LGPL along with this library | |
* in the file COPYING-LGPL-2.1; if not, write to the Free Software | |
* Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA | |
* You should have received a copy of the MPL along with this library | |
* in the file COPYING-MPL-1.1 | |
* | |
* The contents of this file are subject to the Mozilla Public License | |
* Version 1.1 (the "License"); you may not use this file except in | |
* compliance with the License. You may obtain a copy of the License at | |
* http://www.mozilla.org/MPL/ | |
* | |
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY | |
* OF ANY KIND, either express or implied. See the LGPL or the MPL for | |
* the specific language governing rights and limitations. | |
* | |
* The Original Code is the cairo graphics library. | |
* | |
* The Initial Developer of the Original Code is Red Hat, Inc. | |
* | |
* Contributor(s): | |
* Carl D. Worth <cworth@cworth.org> | |
*/ | |
#include "cairoint.h" | |
/** | |
* cairo_debug_reset_static_data: | |
* | |
* Resets all static data within cairo to its original state, | |
* (ie. identical to the state at the time of program invocation). For | |
* example, all caches within cairo will be flushed empty. | |
* | |
* This function is intended to be useful when using memory-checking | |
* tools such as valgrind. When valgrind's memcheck analyzes a | |
* cairo-using program without a call to cairo_debug_reset_static_data(), | |
* it will report all data reachable via cairo's static objects as | |
* "still reachable". Calling cairo_debug_reset_static_data() just prior | |
* to program termination will make it easier to get squeaky clean | |
* reports from valgrind. | |
* | |
* WARNING: It is only safe to call this function when there are no | |
* active cairo objects remaining, (ie. the appropriate destroy | |
* functions have been called as necessary). If there are active cairo | |
* objects, this call is likely to cause a crash, (eg. an assertion | |
* failure due to a hash table being destroyed when non-empty). | |
**/ | |
void | |
cairo_debug_reset_static_data (void) | |
{ | |
CAIRO_MUTEX_INITIALIZE (); | |
_cairo_scaled_font_map_destroy (); | |
_cairo_toy_font_face_reset_static_data (); | |
#if CAIRO_HAS_FT_FONT | |
_cairo_ft_font_reset_static_data (); | |
#endif | |
_cairo_intern_string_reset_static_data (); | |
_cairo_scaled_font_reset_static_data (); | |
_cairo_pattern_reset_static_data (); | |
_cairo_clip_reset_static_data (); | |
#if CAIRO_HAS_DRM_SURFACE | |
_cairo_drm_device_reset_static_data (); | |
#endif | |
CAIRO_MUTEX_FINALIZE (); | |
} | |
#if HAVE_VALGRIND | |
void | |
_cairo_debug_check_image_surface_is_defined (const cairo_surface_t *surface) | |
{ | |
const cairo_image_surface_t *image = (cairo_image_surface_t *) surface; | |
const uint8_t *bits; | |
int row, width; | |
if (surface == NULL) | |
return; | |
if (! RUNNING_ON_VALGRIND) | |
return; | |
bits = image->data; | |
switch (image->format) { | |
case CAIRO_FORMAT_A1: | |
width = (image->width + 7)/8; | |
break; | |
case CAIRO_FORMAT_A8: | |
width = image->width; | |
break; | |
case CAIRO_FORMAT_RGB16_565: | |
width = image->width*2; | |
break; | |
case CAIRO_FORMAT_RGB24: | |
case CAIRO_FORMAT_ARGB32: | |
width = image->width*4; | |
break; | |
case CAIRO_FORMAT_INVALID: | |
default: | |
/* XXX compute width from pixman bpp */ | |
return; | |
} | |
for (row = 0; row < image->height; row++) { | |
VALGRIND_CHECK_MEM_IS_DEFINED (bits, width); | |
/* and then silence any future valgrind warnings */ | |
VALGRIND_MAKE_MEM_DEFINED (bits, width); | |
bits += image->stride; | |
} | |
} | |
#endif | |
#if 0 | |
void | |
_cairo_image_surface_write_to_ppm (cairo_image_surface_t *isurf, const char *fn) | |
{ | |
char *fmt; | |
if (isurf->format == CAIRO_FORMAT_ARGB32 || isurf->format == CAIRO_FORMAT_RGB24) | |
fmt = "P6"; | |
else if (isurf->format == CAIRO_FORMAT_A8) | |
fmt = "P5"; | |
else | |
return; | |
FILE *fp = fopen(fn, "wb"); | |
if (!fp) | |
return; | |
fprintf (fp, "%s %d %d 255\n", fmt,isurf->width, isurf->height); | |
for (int j = 0; j < isurf->height; j++) { | |
unsigned char *row = isurf->data + isurf->stride * j; | |
for (int i = 0; i < isurf->width; i++) { | |
if (isurf->format == CAIRO_FORMAT_ARGB32 || isurf->format == CAIRO_FORMAT_RGB24) { | |
unsigned char r = *row++; | |
unsigned char g = *row++; | |
unsigned char b = *row++; | |
*row++; | |
putc(r, fp); | |
putc(g, fp); | |
putc(b, fp); | |
} else { | |
unsigned char a = *row++; | |
putc(a, fp); | |
} | |
} | |
} | |
fclose (fp); | |
fprintf (stderr, "Wrote %s\n", fn); | |
} | |
#endif | |
static cairo_status_t | |
_print_move_to (void *closure, | |
const cairo_point_t *point) | |
{ | |
fprintf (closure, | |
" %f %f m", | |
_cairo_fixed_to_double (point->x), | |
_cairo_fixed_to_double (point->y)); | |
return CAIRO_STATUS_SUCCESS; | |
} | |
static cairo_status_t | |
_print_line_to (void *closure, | |
const cairo_point_t *point) | |
{ | |
fprintf (closure, | |
" %f %f l", | |
_cairo_fixed_to_double (point->x), | |
_cairo_fixed_to_double (point->y)); | |
return CAIRO_STATUS_SUCCESS; | |
} | |
static cairo_status_t | |
_print_curve_to (void *closure, | |
const cairo_point_t *p1, | |
const cairo_point_t *p2, | |
const cairo_point_t *p3) | |
{ | |
fprintf (closure, | |
" %f %f %f %f %f %f c", | |
_cairo_fixed_to_double (p1->x), | |
_cairo_fixed_to_double (p1->y), | |
_cairo_fixed_to_double (p2->x), | |
_cairo_fixed_to_double (p2->y), | |
_cairo_fixed_to_double (p3->x), | |
_cairo_fixed_to_double (p3->y)); | |
return CAIRO_STATUS_SUCCESS; | |
} | |
static cairo_status_t | |
_print_close (void *closure) | |
{ | |
fprintf (closure, " h"); | |
return CAIRO_STATUS_SUCCESS; | |
} | |
void | |
_cairo_debug_print_path (FILE *stream, cairo_path_fixed_t *path) | |
{ | |
cairo_status_t status; | |
printf ("path: extents=(%f, %f), (%f, %f)\n", | |
_cairo_fixed_to_double (path->extents.p1.x), | |
_cairo_fixed_to_double (path->extents.p1.y), | |
_cairo_fixed_to_double (path->extents.p2.x), | |
_cairo_fixed_to_double (path->extents.p2.y)); | |
status = _cairo_path_fixed_interpret (path, | |
CAIRO_DIRECTION_FORWARD, | |
_print_move_to, | |
_print_line_to, | |
_print_curve_to, | |
_print_close, | |
stream); | |
assert (status == CAIRO_STATUS_SUCCESS); | |
printf ("\n"); | |
} |