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/*
* 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 <stdlib.h>
#include <stdio.h>
#include "cairo-test.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_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)
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