Grcov report - ft-show-glyphs-table.c

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/*

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 * Copyright © 2008 Red Hat, Inc.

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 * Permission is hereby granted, free of charge, to any person

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 * obtaining a copy of this software and associated documentation

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 * files (the "Software"), to deal in the Software without

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 * restriction, including without limitation the rights to use, copy,

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 * modify, merge, publish, distribute, sublicense, and/or sell copies

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 * of the Software, and to permit persons to whom the Software is

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 * furnished to do so, subject to the following conditions:

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 * The above copyright notice and this permission notice shall be

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 * included in all copies or substantial portions of the Software.

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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

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 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

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 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

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 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS

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 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN

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 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

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 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE

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 * SOFTWARE.

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 * Authors: Eugeniy Meshcheryakov <eugen@debian.org>

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 *	    Adrian Johnson <ajohnson@redneon.com>

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 *	    Carl Worth <cworth@cworth.org>

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*/

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#include "cairo-test.h"

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#include <cairo-ft.h>

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#define TEXT_SIZE	20

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#define PAD		10

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#define GRID_SIZE	30

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#define GRID_ROWS	10

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#define GRID_COLS	4

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#define NUM_GLYPHS	(GRID_ROWS * GRID_COLS)

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#define WIDTH		(PAD + GRID_COLS * GRID_SIZE + PAD)

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#define HEIGHT		(PAD + GRID_ROWS * GRID_SIZE + PAD)

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/* This test was originally inspired by this bug report:

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 * Error when creating pdf charts for new FreeSerifItalic.ttf

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 * http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=%23474136

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 * The original assertion failure was fairly boring, but the later

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 * glyph mispositiing was quite interesting. And it turns out that the

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 * _cairo_pdf_operators_show_glyphs code is fairly convoluted with a

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 * code path that wasn't being exercised at all by the test suite.

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 * So this is an attempt to exercise that code path. Apparently laying

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 * glyphs out vertically in a table like this, (so that there's a

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 * large change in Y position from one glyph to the next), exercises

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 * the code well.

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*/

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static cairo_test_status_t

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3

draw (cairo_t *cr, int width, int height)

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    cairo_font_options_t *font_options;

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    cairo_scaled_font_t *scaled_font;

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    FT_Face face;

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    FT_ULong charcode;

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    FT_UInt idx;

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3

    int i = 0;

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    cairo_glyph_t glyphs[NUM_GLYPHS];

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    /* paint white so we don't need separate ref images for

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     * RGB24 and ARGB32 */

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3

    cairo_set_source_rgb (cr, 1.0, 1.0, 1.0);

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3

    cairo_paint (cr);

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3

    cairo_select_font_face (cr, CAIRO_TEST_FONT_FAMILY " Sans",

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			    CAIRO_FONT_SLANT_NORMAL,

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			    CAIRO_FONT_WEIGHT_NORMAL);

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3

    cairo_set_font_size (cr, TEXT_SIZE);

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    font_options = cairo_font_options_create ();

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    cairo_get_font_options (cr, font_options);

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    cairo_font_options_set_hint_metrics (font_options, CAIRO_HINT_METRICS_OFF);

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    cairo_set_font_options (cr, font_options);

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    cairo_font_options_destroy (font_options);

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    cairo_set_source_rgb (cr, 0.0, 0.0, 0.0);

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    scaled_font = cairo_get_scaled_font (cr);

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    face = cairo_ft_scaled_font_lock_face (scaled_font);

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	charcode = FT_Get_First_Char(face, &idx);

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	while (idx && (i < NUM_GLYPHS)) {

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	    glyphs[i] = (cairo_glyph_t) {idx, PAD + GRID_SIZE * (i/GRID_ROWS), PAD + TEXT_SIZE + GRID_SIZE * (i%GRID_ROWS)};

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	    i++;

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	    charcode = FT_Get_Next_Char(face, charcode, &idx);

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    cairo_ft_scaled_font_unlock_face (scaled_font);

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    cairo_show_glyphs(cr, glyphs, i);

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    return CAIRO_TEST_SUCCESS;

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CAIRO_TEST (ft_show_glyphs_table,

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	    "Test cairo_show_glyphs with cairo-ft backend and glyphs laid out in a table",

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	    "ft, text", /* keywords */

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	    NULL, /* requirements */

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	    WIDTH, HEIGHT,

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	    NULL, draw)

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