diff options
Diffstat (limited to 'libs/cairo-1.16.0/test/user-font-proxy.c')
| -rw-r--r-- | libs/cairo-1.16.0/test/user-font-proxy.c | 222 |
1 files changed, 222 insertions, 0 deletions
diff --git a/libs/cairo-1.16.0/test/user-font-proxy.c b/libs/cairo-1.16.0/test/user-font-proxy.c new file mode 100644 index 0000000..e4063f0 --- /dev/null +++ b/libs/cairo-1.16.0/test/user-font-proxy.c @@ -0,0 +1,222 @@ +/* + * Copyright © 2006, 2008 Red Hat, Inc. + * + * 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 + * Red Hat, Inc. not be used in advertising or publicity pertaining to + * distribution of the software without specific, written prior + * permission. Red Hat, Inc. makes no representations about the + * suitability of this software for any purpose. It is provided "as + * is" without express or implied warranty. + * + * RED HAT, INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS + * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS, IN NO EVENT SHALL RED HAT, INC. 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. + * + * Contributor(s): + * Kristian Høgsberg <krh@redhat.com> + * Behdad Esfahbod <behdad@behdad.org> + */ + +#include "cairo-test.h" + +#include <stdlib.h> +#include <stdio.h> + +/*#define ROTATED 1*/ + +#define BORDER 10 +#define TEXT_SIZE 64 +#define WIDTH (TEXT_SIZE * 12 + 2*BORDER) +#ifndef ROTATED + #define HEIGHT ((TEXT_SIZE + 2*BORDER)*2) +#else + #define HEIGHT WIDTH +#endif +#define TEXT "geez... cairo user-font" + +static cairo_user_data_key_t fallback_font_key; + +static cairo_status_t +test_scaled_font_init (cairo_scaled_font_t *scaled_font, + cairo_t *cr, + cairo_font_extents_t *extents) +{ + cairo_status_t status; + + cairo_set_font_face (cr, + cairo_font_face_get_user_data (cairo_scaled_font_get_font_face (scaled_font), + &fallback_font_key)); + + status = cairo_scaled_font_set_user_data (scaled_font, + &fallback_font_key, + cairo_scaled_font_reference (cairo_get_scaled_font (cr)), + (cairo_destroy_func_t) cairo_scaled_font_destroy); + if (unlikely (status)) { + cairo_scaled_font_destroy (cairo_get_scaled_font (cr)); + return status; + } + + cairo_font_extents (cr, extents); + + return CAIRO_STATUS_SUCCESS; +} + +static cairo_status_t +test_scaled_font_render_glyph (cairo_scaled_font_t *scaled_font, + unsigned long glyph, + cairo_t *cr, + cairo_text_extents_t *extents) +{ + cairo_glyph_t cairo_glyph; + + cairo_glyph.index = glyph; + cairo_glyph.x = 0; + cairo_glyph.y = 0; + + cairo_set_font_face (cr, + cairo_font_face_get_user_data (cairo_scaled_font_get_font_face (scaled_font), + &fallback_font_key)); + + cairo_show_glyphs (cr, &cairo_glyph, 1); + cairo_glyph_extents (cr, &cairo_glyph, 1, extents); + + return CAIRO_STATUS_SUCCESS; +} + +static cairo_status_t +test_scaled_font_text_to_glyphs (cairo_scaled_font_t *scaled_font, + const char *utf8, + int utf8_len, + cairo_glyph_t **glyphs, + int *num_glyphs, + cairo_text_cluster_t **clusters, + int *num_clusters, + cairo_text_cluster_flags_t *cluster_flags) +{ + cairo_scaled_font_t *fallback_scaled_font; + + fallback_scaled_font = cairo_scaled_font_get_user_data (scaled_font, + &fallback_font_key); + + return cairo_scaled_font_text_to_glyphs (fallback_scaled_font, 0, 0, + utf8, utf8_len, + glyphs, num_glyphs, + clusters, num_clusters, cluster_flags); +} + +static cairo_status_t +_user_font_face_create (cairo_font_face_t **out) +{ + cairo_font_face_t *user_font_face; + cairo_font_face_t *fallback_font_face; + cairo_status_t status; + + user_font_face = cairo_user_font_face_create (); + cairo_user_font_face_set_init_func (user_font_face, test_scaled_font_init); + cairo_user_font_face_set_render_glyph_func (user_font_face, test_scaled_font_render_glyph); + cairo_user_font_face_set_text_to_glyphs_func (user_font_face, test_scaled_font_text_to_glyphs); + + /* This also happens to be default font face on cairo_t, so does + * not make much sense here. For demonstration only. + */ + fallback_font_face = cairo_toy_font_face_create (CAIRO_TEST_FONT_FAMILY " Sans", + CAIRO_FONT_SLANT_NORMAL, + CAIRO_FONT_WEIGHT_NORMAL); + + status = cairo_font_face_set_user_data (user_font_face, + &fallback_font_key, + fallback_font_face, + (cairo_destroy_func_t) cairo_font_face_destroy); + if (status) { + cairo_font_face_destroy (fallback_font_face); + cairo_font_face_destroy (user_font_face); + return status; + } + + *out = user_font_face; + return CAIRO_STATUS_SUCCESS; +} + +static cairo_test_status_t +draw (cairo_t *cr, int width, int height) +{ + const char text[] = TEXT; + cairo_font_extents_t font_extents; + cairo_text_extents_t extents; + cairo_font_face_t *font_face; + cairo_status_t status; + + cairo_set_source_rgb (cr, 1, 1, 1); + cairo_paint (cr); + +#ifdef ROTATED + cairo_translate (cr, TEXT_SIZE, 0); + cairo_rotate (cr, .6); +#endif + + status = _user_font_face_create (&font_face); + if (status) { + return cairo_test_status_from_status (cairo_test_get_context (cr), + status); + } + + cairo_set_font_face (cr, font_face); + cairo_font_face_destroy (font_face); + + cairo_set_font_size (cr, TEXT_SIZE); + + cairo_font_extents (cr, &font_extents); + cairo_text_extents (cr, text, &extents); + + /* logical boundaries in red */ + cairo_move_to (cr, 0, BORDER); + cairo_rel_line_to (cr, WIDTH, 0); + cairo_move_to (cr, 0, BORDER + font_extents.ascent); + cairo_rel_line_to (cr, WIDTH, 0); + cairo_move_to (cr, 0, BORDER + font_extents.ascent + font_extents.descent); + cairo_rel_line_to (cr, WIDTH, 0); + cairo_move_to (cr, BORDER, 0); + cairo_rel_line_to (cr, 0, 2*BORDER + TEXT_SIZE); + cairo_move_to (cr, BORDER + extents.x_advance, 0); + cairo_rel_line_to (cr, 0, 2*BORDER + TEXT_SIZE); + cairo_set_source_rgb (cr, 1, 0, 0); + cairo_set_line_width (cr, 2); + cairo_stroke (cr); + + /* ink boundaries in green */ + cairo_rectangle (cr, + BORDER + extents.x_bearing, BORDER + font_extents.ascent + extents.y_bearing, + extents.width, extents.height); + cairo_set_source_rgb (cr, 0, 1, 0); + cairo_set_line_width (cr, 2); + cairo_stroke (cr); + + /* text in gray */ + cairo_set_source_rgb (cr, 0, 0, 0); + cairo_move_to (cr, BORDER, BORDER + font_extents.ascent); + cairo_show_text (cr, text); + + + /* filled version of text in light blue */ + cairo_set_source_rgb (cr, 0, 0, 1); + cairo_move_to (cr, BORDER, BORDER + font_extents.height + BORDER + font_extents.ascent); + cairo_text_path (cr, text); + cairo_fill (cr); + + return CAIRO_TEST_SUCCESS; +} + +CAIRO_TEST (user_font_proxy, + "Tests a user-font using a native font in its render_glyph", + "font, user-font", /* keywords */ + "cairo >= 1.7.4", /* requirements */ + WIDTH, HEIGHT, + NULL, draw) |