| /* -*- Mode: c; c-basic-offset: 4; tab-width: 8; indent-tabs-mode: t; -*- */ |
| /* cairo - a vector graphics library with display and print output |
| * |
| * Copyright © 2006 Brian Ewins. |
| * |
| * 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 |
| * Brian Ewins not be used in advertising or publicity pertaining to |
| * distribution of the software without specific, written prior |
| * permission. Brian Ewins makes no representations about the |
| * suitability of this software for any purpose. It is provided "as |
| * is" without express or implied warranty. |
| * |
| * BRIAN EWINS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS |
| * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND |
| * FITNESS, IN NO EVENT SHALL BRIAN EWINS 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: Brian Ewins <Brian.Ewins@gmail.com> |
| */ |
| |
| /* Related to bug 9530 |
| * |
| * cairo_glyph_t can contain any unsigned long in its 'index', the intention |
| * being that it is large enough to hold a pointer. However, this means that |
| * it can specify many glyph indexes which don't exist in the font, and may |
| * exceed the range of legal glyph indexes for the font backend. It may |
| * also contain special values that are not usable as indexes - e.g. 0xffff is |
| * kATSDeletedGlyphcode in ATSUI, a glyph that should not be drawn. |
| * The font backends should handle all legal and out-of-range values |
| * consistently. |
| * |
| * This test expects that operations on out-of-range and missing glyphs should |
| * act as if they were zero-width. |
| */ |
| |
| #include "cairo-test.h" |
| |
| #define WIDTH 100 |
| #define HEIGHT 75 |
| #define NUM_TEXT 20 |
| #define TEXT_SIZE 12 |
| |
| static cairo_test_status_t |
| draw (cairo_t *cr, int width, int height) |
| { |
| cairo_text_extents_t extents; |
| int i; |
| /* Glyphs with no paths followed by 'cairo', the additional |
| * text is to make the space obvious. |
| */ |
| long int index[] = { |
| 0, /* 'no matching glyph' */ |
| 0xffff, /* kATSDeletedGlyphCode */ |
| 0x1ffff, /* out of range */ |
| -1L, /* out of range */ |
| 70, 68, 76, 85, 82 /* 'cairo' */ |
| }; |
| |
| /* We draw in the default black, so paint white first. */ |
| cairo_save (cr); |
| cairo_set_source_rgb (cr, 1.0, 1.0, 1.0); /* white */ |
| cairo_paint (cr); |
| cairo_restore (cr); |
| |
| cairo_select_font_face (cr, CAIRO_TEST_FONT_FAMILY " Sans", |
| CAIRO_FONT_SLANT_NORMAL, |
| CAIRO_FONT_WEIGHT_NORMAL); |
| cairo_set_font_size (cr, 16); |
| |
| for (i = 0; i < 9; i++) { |
| /* since we're just drawing glyphs directly we need to position them. */ |
| cairo_glyph_t glyph = { |
| index[i], 10 * i, 25 |
| }; |
| |
| /* test cairo_glyph_extents. Every glyph index should |
| * have extents, invalid glyphs should be zero-width. |
| */ |
| cairo_move_to (cr, glyph.x, glyph.y); |
| cairo_set_line_width (cr, 1.0); |
| cairo_glyph_extents (cr, &glyph, 1, &extents); |
| cairo_rectangle (cr, |
| glyph.x + extents.x_bearing - 0.5, |
| glyph.y + extents.y_bearing - 0.5, |
| extents.width + 1, |
| extents.height + 1); |
| cairo_set_source_rgb (cr, 1, 0, 0); /* red */ |
| cairo_stroke (cr); |
| |
| /* test cairo_show_glyphs. Every glyph index should be |
| * drawable, invalid glyph indexes should draw nothing. |
| */ |
| cairo_set_source_rgb (cr, 0, 0, 0); /* black */ |
| cairo_show_glyphs (cr, &glyph, 1); |
| cairo_move_to (cr, glyph.x, glyph.y); |
| |
| /* test cairo_glyph_path. Every glyph index should produce |
| * a path, invalid glyph indexes should have empty paths. |
| */ |
| /* Change the glyph position |
| * so that the paths are visible. |
| */ |
| glyph.y = 55; |
| cairo_move_to (cr, glyph.x, glyph.y); |
| cairo_glyph_path (cr, &glyph, 1); |
| cairo_fill (cr); |
| } |
| |
| return CAIRO_TEST_SUCCESS; |
| } |
| |
| CAIRO_TEST (text_glyph_range, |
| "Tests show_glyphs, glyph_path, glyph_extents with out of range glyph ids." |
| "\nft and atsui font backends fail, misreporting errors from FT_Load_Glyph and ATSUGlyphGetCubicPaths", |
| "text, stress", /* keywords */ |
| NULL, /* requirements */ |
| WIDTH, HEIGHT, |
| NULL, draw) |