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-rw-r--r--libs/cairo-1.16.0/test/record-neg-extents.c217
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diff --git a/libs/cairo-1.16.0/test/record-neg-extents.c b/libs/cairo-1.16.0/test/record-neg-extents.c
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+++ b/libs/cairo-1.16.0/test/record-neg-extents.c
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+/*
+ * Copyright © 2016 Adrian Johnson
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy,
+ * modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * Authors:
+ * Adrian Johnson <ajohnson@redneon.com>
+ */
+
+#include "cairo-test.h"
+#include <stdio.h>
+#include <math.h>
+
+#define PAT_SIZE 64
+#define PAD (PAT_SIZE/8)
+#define WIDTH (PAT_SIZE*4 + PAD*5)
+#define HEIGHT (PAT_SIZE + PAD*2)
+
+/* Test case based on bug 89232 - painting a recording surface to a pdf/ps surface
+ * omits objects on the recording surface with negative coordinates even though
+ * the pattern matrix has transformed the objects to within the page extents.
+ * The bug is a result of pdf/ps assuming the surface extents are always
+ * (0,0) to (page_width, page_height).
+ *
+ * Each test has four cases of painting a recording pattern where:
+ * 1) recording surface origin is transformed to the center of the pattern
+ * 2) same as 1) but also scaled up 10x
+ * 3) same as 1) but also scaled down 10x
+ * 4) same as 1) but also rotated 45 deg
+ */
+
+
+static void
+transform_extents(cairo_rectangle_t *extents, cairo_matrix_t *mat)
+{
+ double x1, y1, x2, y2, x, y;
+
+#define UPDATE_BBOX \
+ x1 = x < x1 ? x : x1; \
+ y1 = y < y1 ? y : y1; \
+ x2 = x > x2 ? x : x2; \
+ y2 = y > y2 ? y : y2;
+
+ x = extents->x;
+ y = extents->y;
+ cairo_matrix_transform_point (mat, &x, &y);
+ x1 = x2 = x;
+ y1 = y2 = y;
+
+ x = extents->x + extents->width;
+ y = extents->y;
+ cairo_matrix_transform_point (mat, &x, &y);
+ UPDATE_BBOX;
+
+ x = extents->x;
+ y = extents->y + extents->height;
+ cairo_matrix_transform_point (mat, &x, &y);
+ UPDATE_BBOX;
+
+ x = extents->x + extents->width;
+ y = extents->y + extents->height;
+ cairo_matrix_transform_point (mat, &x, &y);
+ UPDATE_BBOX;
+
+ extents->x = x1;
+ extents->y = y1;
+ extents->width = x2 - extents->x;
+ extents->height = y2 - extents->y;
+
+#undef UPDATE_BBOX
+}
+
+static cairo_pattern_t *
+create_pattern (cairo_matrix_t *mat, cairo_bool_t bounded)
+{
+ cairo_surface_t *surf;
+ cairo_pattern_t *pat;
+ cairo_t *cr;
+ int border;
+ int square;
+
+ if (bounded) {
+ cairo_rectangle_t extents = { 0, 0, PAT_SIZE, PAT_SIZE };
+ transform_extents (&extents, mat);
+ surf = cairo_recording_surface_create (CAIRO_CONTENT_COLOR_ALPHA, &extents);
+ } else {
+ surf = cairo_recording_surface_create (CAIRO_CONTENT_COLOR_ALPHA, NULL);
+ }
+
+ cr = cairo_create (surf);
+ cairo_transform (cr, mat);
+
+ border = PAT_SIZE/8;
+ square = (PAT_SIZE - 2*border)/2;
+
+ cairo_rectangle (cr, 0, 0, PAT_SIZE, PAT_SIZE);
+ cairo_clip (cr);
+ cairo_set_source_rgb (cr, 1, 0, 0);
+ cairo_paint (cr);
+
+ cairo_translate (cr, border, border);
+ cairo_rectangle (cr, 0, 0, square, square);
+ cairo_set_source_rgb (cr, 0, 1, 0);
+ cairo_fill (cr);
+
+ cairo_translate (cr, square, 0);
+ cairo_rectangle (cr, 0, 0, square, square);
+ cairo_set_source_rgb (cr, 0, 0, 1);
+ cairo_fill (cr);
+
+ cairo_translate (cr, 0, square);
+ cairo_rectangle (cr, 0, 0, square, square);
+ cairo_set_source_rgb (cr, 0, 1, 1);
+ cairo_fill (cr);
+
+ cairo_translate (cr, -square, 0);
+ cairo_rectangle (cr, 0, 0, square, square);
+ cairo_set_source_rgb (cr, 1, 1, 0);
+ cairo_fill (cr);
+
+ cairo_destroy (cr);
+
+ pat = cairo_pattern_create_for_surface (surf);
+ cairo_surface_destroy (surf);
+ cairo_pattern_set_matrix (pat, mat);
+
+ return pat;
+}
+
+static cairo_test_status_t
+record_extents (cairo_t *cr, int width, int height, cairo_bool_t bounded)
+{
+ cairo_pattern_t *pat;
+ cairo_matrix_t mat;
+
+ /* record surface extents (-PAT_SIZE/2, -PAT_SIZE/2) to (PAT_SIZE/2, PAT_SIZE/2) */
+ cairo_translate (cr, PAD, PAD);
+ cairo_matrix_init_translate (&mat, -PAT_SIZE/2, -PAT_SIZE/2);
+ pat = create_pattern (&mat, bounded);
+ cairo_set_source (cr, pat);
+ cairo_pattern_destroy (pat);
+ cairo_paint (cr);
+
+ /* record surface extents (-10*PAT_SIZE/2, -10*PAT_SIZE/2) to (10*PAT_SIZE/2, 10*PAT_SIZE/2) */
+ cairo_translate (cr, PAT_SIZE + PAD, 0);
+ cairo_matrix_init_translate (&mat, -10.0*PAT_SIZE/2, -10.0*PAT_SIZE/2);
+ cairo_matrix_scale (&mat, 10, 10);
+ pat = create_pattern (&mat, bounded);
+ cairo_set_source (cr, pat);
+ cairo_pattern_destroy (pat);
+ cairo_paint (cr);
+
+ /* record surface extents (-0.1*PAT_SIZE/2, -0.1*PAT_SIZE/2) to (0.1*PAT_SIZE/2, 0.1*PAT_SIZE/2) */
+ cairo_translate (cr, PAT_SIZE + PAD, 0);
+ cairo_matrix_init_translate (&mat, -0.1*PAT_SIZE/2, -0.1*PAT_SIZE/2);
+ cairo_matrix_scale (&mat, 0.1, 0.1);
+ pat = create_pattern (&mat, bounded);
+ cairo_set_source (cr, pat);
+ cairo_pattern_destroy (pat);
+ cairo_paint (cr);
+
+ /* record surface centered on (0,0) and rotated 45 deg */
+ cairo_translate (cr, PAT_SIZE + PAD, 0);
+ cairo_matrix_init_translate (&mat, -PAT_SIZE/sqrt(2), -PAT_SIZE/sqrt(2));
+ cairo_matrix_rotate (&mat, M_PI/4.0);
+ cairo_matrix_translate (&mat, PAT_SIZE/2, -PAT_SIZE/2);
+ pat = create_pattern (&mat, bounded);
+ cairo_set_source (cr, pat);
+ cairo_pattern_destroy (pat);
+ cairo_paint (cr);
+
+ return CAIRO_TEST_SUCCESS;
+}
+
+static cairo_test_status_t
+record_neg_extents_bounded (cairo_t *cr, int width, int height)
+{
+ return record_extents(cr, width, height, TRUE);
+}
+
+static cairo_test_status_t
+record_neg_extents_unbounded (cairo_t *cr, int width, int height)
+{
+ return record_extents(cr, width, height, FALSE);
+}
+
+
+CAIRO_TEST (record_neg_extents_unbounded,
+ "Paint unbounded recording pattern with untransformed extents outside of target extents",
+ "record,transform,pattern", /* keywords */
+ NULL, /* requirements */
+ WIDTH, HEIGHT,
+ NULL, record_neg_extents_unbounded)
+CAIRO_TEST (record_neg_extents_bounded,
+ "Paint bounded recording pattern with untransformed extents outside of target extents",
+ "record,transform,pattern", /* keywords */
+ NULL, /* requirements */
+ WIDTH, HEIGHT,
+ NULL, record_neg_extents_bounded)
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