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Diffstat (limited to 'libs/cairo-1.16.0/test/ft-show-glyphs-table.c')
| -rw-r--r-- | libs/cairo-1.16.0/test/ft-show-glyphs-table.c | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/libs/cairo-1.16.0/test/ft-show-glyphs-table.c b/libs/cairo-1.16.0/test/ft-show-glyphs-table.c new file mode 100644 index 0000000..344392f --- /dev/null +++ b/libs/cairo-1.16.0/test/ft-show-glyphs-table.c @@ -0,0 +1,109 @@ +/* + * Copyright © 2008 Red Hat, Inc. + * + * 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: Eugeniy Meshcheryakov <eugen@debian.org> + * Adrian Johnson <ajohnson@redneon.com> + * Carl Worth <cworth@cworth.org> + */ + +#include "cairo-test.h" +#include <cairo-ft.h> + +#define TEXT_SIZE 20 +#define PAD 10 +#define GRID_SIZE 30 +#define GRID_ROWS 10 +#define GRID_COLS 4 +#define NUM_GLYPHS (GRID_ROWS * GRID_COLS) +#define WIDTH (PAD + GRID_COLS * GRID_SIZE + PAD) +#define HEIGHT (PAD + GRID_ROWS * GRID_SIZE + PAD) + +/* This test was originally inspired by this bug report: + * + * Error when creating pdf charts for new FreeSerifItalic.ttf + * http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=%23474136 + * + * The original assertion failure was fairly boring, but the later + * glyph mispositiing was quite interesting. And it turns out that the + * _cairo_pdf_operators_show_glyphs code is fairly convoluted with a + * code path that wasn't being exercised at all by the test suite. + * + * So this is an attempt to exercise that code path. Apparently laying + * glyphs out vertically in a table like this, (so that there's a + * large change in Y position from one glyph to the next), exercises + * the code well. + */ + +static cairo_test_status_t +draw (cairo_t *cr, int width, int height) +{ + cairo_font_options_t *font_options; + cairo_scaled_font_t *scaled_font; + FT_Face face; + FT_ULong charcode; + FT_UInt idx; + int i = 0; + cairo_glyph_t glyphs[NUM_GLYPHS]; + + /* paint white so we don't need separate ref images for + * RGB24 and ARGB32 */ + cairo_set_source_rgb (cr, 1.0, 1.0, 1.0); + cairo_paint (cr); + + cairo_select_font_face (cr, CAIRO_TEST_FONT_FAMILY " Sans", + CAIRO_FONT_SLANT_NORMAL, + CAIRO_FONT_WEIGHT_NORMAL); + cairo_set_font_size (cr, TEXT_SIZE); + + font_options = cairo_font_options_create (); + cairo_get_font_options (cr, font_options); + cairo_font_options_set_hint_metrics (font_options, CAIRO_HINT_METRICS_OFF); + cairo_set_font_options (cr, font_options); + cairo_font_options_destroy (font_options); + + cairo_set_source_rgb (cr, 0.0, 0.0, 0.0); + + scaled_font = cairo_get_scaled_font (cr); + face = cairo_ft_scaled_font_lock_face (scaled_font); + { + charcode = FT_Get_First_Char(face, &idx); + while (idx && (i < NUM_GLYPHS)) { + glyphs[i] = (cairo_glyph_t) {idx, PAD + GRID_SIZE * (i/GRID_ROWS), PAD + TEXT_SIZE + GRID_SIZE * (i%GRID_ROWS)}; + i++; + charcode = FT_Get_Next_Char(face, charcode, &idx); + } + } + cairo_ft_scaled_font_unlock_face (scaled_font); + + cairo_show_glyphs(cr, glyphs, i); + + return CAIRO_TEST_SUCCESS; +} + +CAIRO_TEST (ft_show_glyphs_table, + "Test cairo_show_glyphs with cairo-ft backend and glyphs laid out in a table", + "ft, text", /* keywords */ + NULL, /* requirements */ + WIDTH, HEIGHT, + NULL, draw) + |