/* * 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)