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-rw-r--r--libs/cairo-1.16.0/test/fallback-resolution.c517
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diff --git a/libs/cairo-1.16.0/test/fallback-resolution.c b/libs/cairo-1.16.0/test/fallback-resolution.c
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+++ b/libs/cairo-1.16.0/test/fallback-resolution.c
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+/*
+ * Copyright © 2006 Red Hat, Inc.
+ * 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>
+ * Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <cairo.h>
+
+#if CAIRO_HAS_PDF_SURFACE
+#include <cairo-pdf.h>
+#endif
+
+#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"
+
+/* This test exists to test cairo_surface_set_fallback_resolution
+ *
+ * <behdad> one more thing.
+ * if you can somehow incorporate cairo_show_page stuff in the
+ * test suite. such that fallback-resolution can actually be
+ * automated..
+ * if we could get a callback on surface when that function is
+ * called, we could do cool stuff like making other backends
+ * draw a long strip of images, one for each page...
+ */
+
+#define INCHES_TO_POINTS(in) ((in) * 72.0)
+#define SIZE INCHES_TO_POINTS(2)
+
+/* cairo_set_tolerance() is not respected by the PS/PDF backends currently */
+#define SET_TOLERANCE 0
+
+#define GENERATE_REFERENCE 0
+
+static void
+draw (cairo_t *cr, double width, double height)
+{
+ const char *text = "cairo";
+ cairo_text_extents_t extents;
+ const double dash[2] = { 8, 16 };
+ cairo_pattern_t *pattern;
+
+ cairo_save (cr);
+
+ cairo_new_path (cr);
+
+ cairo_set_line_width (cr, .05 * SIZE / 2.0);
+
+ cairo_arc (cr, SIZE / 2.0, SIZE / 2.0,
+ 0.875 * SIZE / 2.0,
+ 0, 2.0 * M_PI);
+ cairo_stroke (cr);
+
+ /* use dashes to demonstrate bugs:
+ * https://bugs.freedesktop.org/show_bug.cgi?id=9189
+ * https://bugs.freedesktop.org/show_bug.cgi?id=17223
+ */
+ cairo_save (cr);
+ cairo_set_dash (cr, dash, 2, 0);
+ cairo_arc (cr, SIZE / 2.0, SIZE / 2.0,
+ 0.75 * SIZE / 2.0,
+ 0, 2.0 * M_PI);
+ cairo_stroke (cr);
+ cairo_restore (cr);
+
+ cairo_save (cr);
+ cairo_rectangle (cr, 0, 0, SIZE/2, SIZE);
+ cairo_clip (cr);
+ cairo_arc (cr, SIZE / 2.0, SIZE / 2.0,
+ 0.6 * SIZE / 2.0,
+ 0, 2.0 * M_PI);
+ cairo_fill (cr);
+ cairo_restore (cr);
+
+ /* use a pattern to exercise bug:
+ * https://bugs.launchpad.net/inkscape/+bug/234546
+ */
+ cairo_save (cr);
+ cairo_rectangle (cr, SIZE/2, 0, SIZE/2, SIZE);
+ cairo_clip (cr);
+ pattern = cairo_pattern_create_linear (SIZE/2, 0, SIZE, 0);
+ cairo_pattern_add_color_stop_rgba (pattern, 0, 0, 0, 0, 1.);
+ cairo_pattern_add_color_stop_rgba (pattern, 1, 0, 0, 0, 0.);
+ cairo_set_source (cr, pattern);
+ cairo_pattern_destroy (pattern);
+ cairo_arc (cr, SIZE / 2.0, SIZE / 2.0,
+ 0.6 * SIZE / 2.0,
+ 0, 2.0 * M_PI);
+ cairo_fill (cr);
+ cairo_restore (cr);
+
+ cairo_set_source_rgb (cr, 1, 1, 1); /* white */
+ cairo_set_font_size (cr, .25 * SIZE / 2.0);
+ cairo_text_extents (cr, text, &extents);
+ cairo_move_to (cr, (SIZE-extents.width)/2.0-extents.x_bearing,
+ (SIZE-extents.height)/2.0-extents.y_bearing);
+ cairo_show_text (cr, text);
+
+ cairo_restore (cr);
+}
+
+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, SIZE, SIZE);
+ 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,
+ SIZE, SIZE);
+
+ 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;
+}
+
+#if GENERATE_REFERENCE
+static void
+generate_reference (double ppi_x, double ppi_y, const char *filename)
+{
+ cairo_surface_t *surface, *target;
+ cairo_t *cr;
+ cairo_status_t status;
+
+ surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24,
+ SIZE*ppi_x/72, SIZE*ppi_y/72);
+ cr = cairo_create (surface);
+ cairo_surface_destroy (surface);
+
+ /* As we wish to mimic a PDF surface, copy across the default font options
+ * from the PDF backend.
+ */
+ {
+ cairo_surface_t *pdf;
+ cairo_font_options_t *options;
+
+ options = cairo_font_options_create ();
+
+#if CAIRO_HAS_PDF_SURFACE
+ pdf = cairo_pdf_surface_create ("tmp.pdf", 1, 1);
+ cairo_surface_get_font_options (pdf, options);
+ cairo_surface_destroy (pdf);
+#endif
+
+ cairo_set_font_options (cr, options);
+ cairo_font_options_destroy (options);
+ }
+
+#if SET_TOLERANCE
+ cairo_set_tolerance (cr, 3.0);
+#endif
+
+ cairo_save (cr); {
+ cairo_set_source_rgb (cr, 1, 1, 1);
+ cairo_paint (cr);
+ } cairo_restore (cr);
+
+ cairo_scale (cr, ppi_x/72., ppi_y/72.);
+ draw (cr, SIZE, SIZE);
+
+ surface = cairo_surface_reference (cairo_get_target (cr));
+ cairo_destroy (cr);
+
+ target = cairo_image_surface_create (CAIRO_FORMAT_RGB24, SIZE, SIZE);
+ cr = cairo_create (target);
+ cairo_scale (cr, 72./ppi_x, 72./ppi_y);
+ cairo_set_source_surface (cr, surface, 0, 0);
+ cairo_paint (cr);
+
+ status = cairo_surface_write_to_png (cairo_get_target (cr), filename);
+ cairo_destroy (cr);
+
+ if (status) {
+ fprintf (stderr, "Failed to generate reference image '%s': %s\n",
+ filename, cairo_status_to_string (status));
+ exit (1);
+ }
+}
+#endif
+
+/* TODO: Split each ppi case out to its own CAIRO_TEST() test case */
+static cairo_test_status_t
+preamble (cairo_test_context_t *ctx)
+{
+ cairo_t *cr;
+ cairo_test_status_t ret = CAIRO_TEST_UNTESTED;
+ struct {
+ double x, y;
+ } ppi[] = {
+ { 576, 576 },
+ { 576, 72 },
+
+ { 288, 288 },
+ { 288, 72 },
+
+ { 144, 144 },
+ { 144, 72 },
+
+ { 72, 576 },
+ { 72, 288 },
+ { 72, 144 },
+ { 72, 72 },
+ };
+ unsigned int i;
+ int n, num_ppi;
+ const char *path = cairo_test_mkdir (CAIRO_TEST_OUTPUT_DIR) ? CAIRO_TEST_OUTPUT_DIR : ".";
+
+ num_ppi = ARRAY_LENGTH (ppi);
+
+#if GENERATE_REFERENCE
+ for (n = 0; n < num_ppi; n++) {
+ char *ref_name;
+ xasprintf (&ref_name, "reference/fallback-resolution.ppi%gx%g.ref.png",
+ ppi[n].x, ppi[n].y);
+ generate_reference (ppi[n].x, ppi[n].y, ref_name);
+ free (ref_name);
+ }
+#endif
+
+ 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;
+
+ if (! target->is_vector)
+ continue;
+
+ if (! cairo_test_is_target_enabled (ctx, target->name))
+ continue;
+
+ format = cairo_boilerplate_content_name (target->content);
+ xasprintf (&base_name, "%s/fallback-resolution.%s.%s",
+ path, target->name,
+ format);
+
+ surface = (target->create_surface) (base_name,
+ target->content,
+ SIZE, SIZE,
+ SIZE, SIZE,
+ CAIRO_BOILERPLATE_MODE_TEST,
+ &closure);
+
+ if (surface == NULL) {
+ free (base_name);
+ continue;
+ }
+
+ if (ret == CAIRO_TEST_UNTESTED)
+ ret = CAIRO_TEST_SUCCESS;
+
+ cairo_surface_destroy (surface);
+ if (target->cleanup)
+ target->cleanup (closure);
+ free (base_name);
+
+ /* we need to recreate the surface for each resolution as we include
+ * SVG in testing which does not support the paginated interface.
+ */
+ for (n = 0; n < num_ppi; n++) {
+ char *test_name;
+ cairo_bool_t pass;
+
+ xasprintf (&test_name, "fallback-resolution.ppi%gx%g",
+ ppi[n].x, ppi[n].y);
+ xasprintf (&base_name, "%s/%s.%s.%s",
+ path, test_name,
+ target->name,
+ format);
+
+ surface = (target->create_surface) (base_name,
+ target->content,
+ SIZE + 25, SIZE + 25,
+ SIZE + 25, SIZE + 25,
+ CAIRO_BOILERPLATE_MODE_TEST,
+ &closure);
+ if (surface == NULL || cairo_surface_status (surface)) {
+ cairo_test_log (ctx, "Failed to generate surface: %s.%s\n",
+ target->name,
+ format);
+ free (base_name);
+ free (test_name);
+ ret = CAIRO_TEST_FAILURE;
+ continue;
+ }
+
+ cairo_test_log (ctx,
+ "Testing fallback-resolution %gx%g with %s target\n",
+ ppi[n].x, ppi[n].y, target->name);
+ printf ("%s:\t", base_name);
+ fflush (stdout);
+
+ if (target->force_fallbacks != NULL)
+ target->force_fallbacks (surface, ppi[n].x, ppi[n].y);
+ cr = cairo_create (surface);
+#if SET_TOLERANCE
+ cairo_set_tolerance (cr, 3.0);
+#endif
+
+ cairo_surface_set_device_offset (surface, 25, 25);
+
+ cairo_save (cr); {
+ cairo_set_source_rgb (cr, 1, 1, 1);
+ cairo_paint (cr);
+ } cairo_restore (cr);
+
+ /* First draw the top half in a conventional way. */
+ cairo_save (cr); {
+ cairo_rectangle (cr, 0, 0, SIZE, SIZE / 2.0);
+ cairo_clip (cr);
+
+ draw (cr, SIZE, SIZE);
+ } cairo_restore (cr);
+
+ /* Then draw the bottom half in a separate group,
+ * (exposing a bug in 1.6.4 with the group not being
+ * rendered with the correct fallback resolution). */
+ cairo_save (cr); {
+ cairo_rectangle (cr, 0, SIZE / 2.0, SIZE, SIZE / 2.0);
+ cairo_clip (cr);
+
+ cairo_push_group (cr); {
+ draw (cr, SIZE, SIZE);
+ } cairo_pop_group_to_source (cr);
+
+ cairo_paint (cr);
+ } cairo_restore (cr);
+
+ status = cairo_status (cr);
+ cairo_destroy (cr);
+
+ pass = FALSE;
+ if (status) {
+ cairo_test_log (ctx, "Error: Failed to create target surface: %s\n",
+ cairo_status_to_string (status));
+ ret = CAIRO_TEST_FAILURE;
+ } else {
+ /* extract the image and compare it to our reference */
+ if (! check_result (ctx, target, test_name, base_name, surface))
+ ret = CAIRO_TEST_FAILURE;
+ else
+ pass = TRUE;
+ }
+ cairo_surface_destroy (surface);
+ if (target->cleanup)
+ target->cleanup (closure);
+
+ free (base_name);
+ free (test_name);
+
+ if (pass) {
+ printf ("PASS\n");
+ } else {
+ printf ("FAIL\n");
+ }
+ fflush (stdout);
+ }
+ }
+
+ return ret;
+}
+
+CAIRO_TEST (fallback_resolution,
+ "Check handling of fallback resolutions",
+ "fallback", /* keywords */
+ NULL, /* requirements */
+ 0, 0,
+ preamble, NULL)
generated by cgit v1.2.1 (git 2.18.0) at 2024-11-01 09:32:50 +0000