summaryrefslogtreecommitdiff
path: root/test/ps-eps.c
blob: 1961463899e47ad123c0850a4863f78fcdc170ca (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
/*
 * Copyright © 2006 Red Hat, Inc.
 * Copyright © 2009 Adrian Johnson
 * Copyright © 2008 Chris Wilson
 *
 * Permission to use, copy, modify, distribute, and sell this software
 * and its documentation for any purpose is hereby granted without
 * fee, provided that the above copyright notice appear in all copies
 * and that both that copyright notice and this permission notice
 * appear in supporting documentation, and that the name of
 * Red Hat, Inc. not be used in advertising or publicity pertaining to
 * distribution of the software without specific, written prior
 * permission. Red Hat, Inc. makes no representations about the
 * suitability of this software for any purpose.  It is provided "as
 * is" without express or implied warranty.
 *
 * RED HAT, INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
 * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
 * FITNESS, IN NO EVENT SHALL RED HAT, INC. BE LIABLE FOR ANY SPECIAL,
 * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
 * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
 * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 *
 * Author: Carl D. Worth <cworth@cworth.org>
 *         Adrian Johnson <ajohnson@redneon.com>
 *         Chris Wilson <chris@chris-wilson.co.uk>
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <cairo.h>
#include <cairo-ps.h>

#ifdef HAVE_UNISTD_H
#include <unistd.h>
#include <errno.h>
#endif
#if HAVE_SYS_STAT_H
#include <sys/stat.h>
#endif

#include "cairo-test.h"
#include "buffer-diff.h"

/* Test EPS output.
 */

#define WIDTH 595
#define HEIGHT 842

/* Reference Bounding Box */
#define LLX  95
#define LLY 687
#define URX 155
#define URY 747

static void
_xunlink (const cairo_test_context_t *ctx, const char *pathname)
{
    if (unlink (pathname) < 0 && errno != ENOENT) {
	cairo_test_log (ctx, "Error: Cannot remove %s: %s\n",
			pathname, strerror (errno));
	exit (1);
    }
}

static cairo_bool_t
check_result (cairo_test_context_t *ctx,
	      const cairo_boilerplate_target_t *target,
	      const char *test_name,
	      const char *base_name,
	      cairo_surface_t *surface)
{
    const char *format;
    char *ref_name;
    char *png_name;
    char *diff_name;
    cairo_surface_t *test_image, *ref_image, *diff_image;
    buffer_diff_result_t result;
    cairo_status_t status;
    cairo_bool_t ret;

    /* XXX log target, OUTPUT, REFERENCE, DIFFERENCE for index.html */

    if (target->finish_surface != NULL) {
	status = target->finish_surface (surface);
	if (status) {
	    cairo_test_log (ctx, "Error: Failed to finish surface: %s\n",
		    cairo_status_to_string (status));
	    cairo_surface_destroy (surface);
	    return FALSE;
	}
    }

    xasprintf (&png_name,  "%s.out.png", base_name);
    xasprintf (&diff_name, "%s.diff.png", base_name);

    test_image = target->get_image_surface (surface, 0, WIDTH, HEIGHT);
    if (cairo_surface_status (test_image)) {
	cairo_test_log (ctx, "Error: Failed to extract page: %s\n",
		        cairo_status_to_string (cairo_surface_status (test_image)));
	cairo_surface_destroy (test_image);
	free (png_name);
	free (diff_name);
	return FALSE;
    }

    _xunlink (ctx, png_name);
    status = cairo_surface_write_to_png (test_image, png_name);
    if (status) {
	cairo_test_log (ctx, "Error: Failed to write output image: %s\n",
		cairo_status_to_string (status));
	cairo_surface_destroy (test_image);
	free (png_name);
	free (diff_name);
	return FALSE;
    }

    format = cairo_boilerplate_content_name (target->content);
    ref_name = cairo_test_reference_filename (ctx,
					      base_name,
					      test_name,
					      target->name,
					      target->basename,
					      format,
					      CAIRO_TEST_REF_SUFFIX,
					      CAIRO_TEST_PNG_EXTENSION);
    if (ref_name == NULL) {
	cairo_test_log (ctx, "Error: Cannot find reference image for %s\n",
		        base_name);
	cairo_surface_destroy (test_image);
	free (png_name);
	free (diff_name);
	return FALSE;
    }

    ref_image = cairo_test_get_reference_image (ctx, ref_name,
	    target->content == CAIRO_TEST_CONTENT_COLOR_ALPHA_FLATTENED);
    if (cairo_surface_status (ref_image)) {
	cairo_test_log (ctx, "Error: Cannot open reference image for %s: %s\n",
		        ref_name,
		cairo_status_to_string (cairo_surface_status (ref_image)));
	cairo_surface_destroy (ref_image);
	cairo_surface_destroy (test_image);
	free (png_name);
	free (diff_name);
	free (ref_name);
	return FALSE;
    }

    diff_image = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
	    WIDTH, HEIGHT);

    ret = TRUE;
    status = image_diff (ctx,
	    test_image, ref_image, diff_image,
	    &result);
    _xunlink (ctx, diff_name);
    if (status) {
	cairo_test_log (ctx, "Error: Failed to compare images: %s\n",
			cairo_status_to_string (status));
	ret = FALSE;
    } else if (image_diff_is_failure (&result, target->error_tolerance))
    {
	ret = FALSE;

	status = cairo_surface_write_to_png (diff_image, diff_name);
	if (status) {
	    cairo_test_log (ctx, "Error: Failed to write differences image: %s\n",
		    cairo_status_to_string (status));
	}
    }

    cairo_surface_destroy (test_image);
    cairo_surface_destroy (diff_image);
    free (png_name);
    free (diff_name);
    free (ref_name);

    return ret;
}


#define DOCUMENT_BBOX  "%%BoundingBox:"
#define PAGE_BBOX      "%%PageBoundingBox:"

static cairo_bool_t
check_bbox (cairo_test_context_t *ctx,
	    const char *base_name)
{
    char *filename;
    FILE *f;
    char buf[256];
    cairo_bool_t bbox_pass, page_bbox_pass;
    int llx, lly, urx, ury;
    int ret;

    xasprintf (&filename,  "%s.out.ps", base_name);
    f = fopen (filename, "r");
    if (!f) {
	cairo_test_log (ctx, "Error: Cannot open EPS output: %s\n",
		        base_name);
	free (filename);
	return FALSE;
    }

    bbox_pass = FALSE;
    page_bbox_pass = FALSE;
    while (!feof(f)) {
	fgets (buf, sizeof(buf), f);

	if (strncmp (buf, DOCUMENT_BBOX, strlen (DOCUMENT_BBOX)) == 0) {
	    ret = sscanf (buf+strlen (DOCUMENT_BBOX), "%d %d %d %d", &llx, &lly, &urx, &ury);
	    if (ret == 4 && llx == LLX && lly == LLY && urx == URX && ury == URY)
		bbox_pass = TRUE;
	}

	if (strncmp (buf, PAGE_BBOX, strlen (PAGE_BBOX)) == 0) {
	    ret = sscanf (buf+strlen (PAGE_BBOX), "%d %d %d %d", &llx, &lly, &urx, &ury);
	    if (ret == 4 && llx == LLX && lly == LLY && urx == URX && ury == URY)
		page_bbox_pass = TRUE;
	}
    }
    fclose (f);

    if (!bbox_pass || !page_bbox_pass) {
	cairo_test_log (ctx, "Error: EPS Bounding Box does not match reference Bounding Box\n");
	return FALSE;
    }

    free (filename);

    return TRUE;
}

static cairo_bool_t
_cairo_test_mkdir (const char *path)
{
#if ! HAVE_MKDIR
    return FALSE;
#elif HAVE_MKDIR == 1
    if (mkdir (path) == 0)
	return TRUE;
#elif HAVE_MKDIR == 2
    if (mkdir (path, 0770) == 0)
	return TRUE;
#else
#error Bad value for HAVE_MKDIR
#endif

    return errno == EEXIST;
}

static cairo_test_status_t
preamble (cairo_test_context_t *ctx)
{
    cairo_t *cr;
    cairo_test_status_t ret = CAIRO_TEST_UNTESTED;
    const char *path = _cairo_test_mkdir (CAIRO_TEST_OUTPUT_DIR) ? CAIRO_TEST_OUTPUT_DIR : ".";
    unsigned int i;

    for (i = 0; i < ctx->num_targets; i++) {
	const cairo_boilerplate_target_t *target = ctx->targets_to_test[i];
	cairo_surface_t *surface = NULL;
	char *base_name;
	void *closure;
	const char *format;
	cairo_status_t status;
	cairo_bool_t pass;
	char *test_name;

	if (! cairo_test_is_target_enabled (ctx, target->name))
	    continue;

	format = cairo_boilerplate_content_name (target->content);
	xasprintf (&test_name, "ps-eps");
	xasprintf (&base_name, "%s/ps-eps.%s.%s",
		   path, target->name, format);

	surface = (target->create_surface) (base_name,
					    target->content,
					    WIDTH, HEIGHT,
					    WIDTH, HEIGHT,
					    CAIRO_BOILERPLATE_MODE_TEST,
					    &closure);

	if (surface == NULL) {
	    free (base_name);
	    free (test_name);
	    continue;
	}

	cairo_ps_surface_set_eps (surface, TRUE);
	if (!cairo_ps_surface_get_eps (surface)) {
	    cairo_surface_destroy (surface);
	    if (target->cleanup)
		target->cleanup (closure);

	    free (base_name);
	    free (test_name);
	    continue;
	}
	
	cairo_test_log (ctx,
			"Testing ps-eps with %s target\n",
			target->name);
	printf ("%s:\t", base_name);
	fflush (stdout);

	cairo_surface_set_device_offset (surface, 25, 25);
	cr = cairo_create (surface);

	cairo_new_sub_path (cr);
	cairo_arc (cr, 100, 100, 25, 0, 2*M_PI);
	cairo_set_line_width (cr, 10);
	cairo_stroke (cr);

	cairo_show_page (cr);

	status = cairo_status (cr);
	cairo_destroy (cr);

	if (status) {
	    cairo_test_log (ctx, "Error: Failed to create target surface: %s\n",
			    cairo_status_to_string (status));
	    pass = FALSE;
	} else {
	    pass = TRUE;
	    /* extract the image and compare it to our reference */
	    if (! check_result (ctx, target, test_name, base_name, surface))
		pass = FALSE;

	    /* check the bounding box of the EPS file and compare it to our reference */
	    if (! check_bbox (ctx, base_name))
		pass = FALSE;
	}
	cairo_surface_destroy (surface);
	if (target->cleanup)
	    target->cleanup (closure);

	free (base_name);
	free (test_name);

	if (pass) {
	    printf ("PASS\n");
	    ret = CAIRO_TEST_SUCCESS;
	} else {
	    printf ("FAIL\n");
	    ret = CAIRO_TEST_FAILURE;
	}
	fflush (stdout);
    }

    return ret;
}

CAIRO_TEST (ps_eps,
	    "Check EPS output from PS surface",
	    "ps, api", /* keywords */
	    NULL, /* requirements */
	    0, 0,
	    preamble, NULL)