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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 "cairo-test.h"
#include <stdlib.h>
#include <stdio.h>
/*#define ROTATED 1*/
#define BORDER 10
#define TEXT_SIZE 64
#define WIDTH (TEXT_SIZE * 15 + 2*BORDER)
#ifndef ROTATED
#define HEIGHT ((TEXT_SIZE + 2*BORDER)*2)
#else
#define HEIGHT WIDTH
#endif
#define TEXT "geez... cairo user-font"
#define END_GLYPH 0
#define STROKE 126
#define CLOSE 127
/* Simple glyph definition: 1 - 15 means lineto (or moveto for first
* point) for one of the points on this grid:
*
* 1 2 3
* 4 5 6
* 7 8 9
* ----10 11 12----(baseline)
* 13 14 15
*/
typedef struct {
unsigned long ucs4;
int width;
char data[16];
} test_scaled_font_glyph_t;
static cairo_user_data_key_t test_font_face_glyphs_key;
static cairo_status_t
test_scaled_font_init (cairo_scaled_font_t *scaled_font,
cairo_t *cr,
cairo_font_extents_t *metrics)
{
metrics->ascent = .75;
metrics->descent = .25;
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
test_scaled_font_unicode_to_glyph (cairo_scaled_font_t *scaled_font,
unsigned long unicode,
unsigned long *glyph)
{
test_scaled_font_glyph_t *glyphs = cairo_font_face_get_user_data (cairo_scaled_font_get_font_face (scaled_font),
&test_font_face_glyphs_key);
int i;
for (i = 0; glyphs[i].ucs4 != (unsigned long) -1; i++)
if (glyphs[i].ucs4 == unicode) {
*glyph = i;
return CAIRO_STATUS_SUCCESS;
}
/* Not found. Default to glyph 0 */
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 *metrics)
{
test_scaled_font_glyph_t *glyphs = cairo_font_face_get_user_data (cairo_scaled_font_get_font_face (scaled_font),
&test_font_face_glyphs_key);
int i;
const char *data;
div_t d;
double x, y;
/* FIXME: We simply crash on out-of-bound glyph indices */
metrics->x_advance = glyphs[glyph].width / 4.0;
cairo_set_line_width (cr, 0.1);
cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND);
cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND);
data = glyphs[glyph].data;
for (i = 0; data[i] != END_GLYPH; i++) {
switch (data[i]) {
case STROKE:
cairo_new_sub_path (cr);
break;
case CLOSE:
cairo_close_path (cr);
break;
default:
d = div (data[i] - 1, 3);
x = d.rem / 4.0 + 0.125;
y = d.quot / 5.0 + 0.4 - 1.0;
cairo_line_to (cr, x, y);
}
}
cairo_stroke (cr);
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_user_font_face_create (cairo_font_face_t **out)
{
/* Simple glyph definition: 1 - 15 means lineto (or moveto for first
* point) for one of the points on this grid:
*
* 1 2 3
* 4 5 6
* 7 8 9
* ----10 11 12----(baseline)
* 13 14 15
*/
static const test_scaled_font_glyph_t glyphs [] = {
{ 'a', 3, { 4, 6, 12, 10, 7, 9, STROKE, END_GLYPH } },
{ 'c', 3, { 6, 4, 10, 12, STROKE, END_GLYPH } },
{ 'e', 3, { 12, 10, 4, 6, 9, 7, STROKE, END_GLYPH } },
{ 'f', 3, { 3, 2, 11, STROKE, 4, 6, STROKE, END_GLYPH } },
{ 'g', 3, { 12, 10, 4, 6, 15, 13, STROKE, END_GLYPH } },
{ 'h', 3, { 1, 10, STROKE, 7, 5, 6, 12, STROKE, END_GLYPH } },
{ 'i', 1, { 1, 1, STROKE, 4, 10, STROKE, END_GLYPH } },
{ 'l', 1, { 1, 10, STROKE, END_GLYPH } },
{ 'n', 3, { 10, 4, STROKE, 7, 5, 6, 12, STROKE, END_GLYPH } },
{ 'o', 3, { 4, 10, 12, 6, CLOSE, END_GLYPH } },
{ 'r', 3, { 4, 10, STROKE, 7, 5, 6, STROKE, END_GLYPH } },
{ 's', 3, { 6, 4, 7, 9, 12, 10, STROKE, END_GLYPH } },
{ 't', 3, { 2, 11, 12, STROKE, 4, 6, STROKE, END_GLYPH } },
{ 'u', 3, { 4, 10, 12, 6, STROKE, END_GLYPH } },
{ 'z', 3, { 4, 6, 10, 12, STROKE, END_GLYPH } },
{ ' ', 1, { END_GLYPH } },
{ '-', 2, { 7, 8, STROKE, END_GLYPH } },
{ '.', 1, { 10, 10, STROKE, END_GLYPH } },
{ -1, 0, { END_GLYPH } },
};
cairo_font_face_t *user_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_unicode_to_glyph_func (user_font_face, test_scaled_font_unicode_to_glyph);
status = cairo_font_face_set_user_data (user_font_face,
&test_font_face_glyphs_key,
(void*) glyphs, NULL);
if (status) {
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)
{
cairo_font_face_t *font_face;
const char text[] = TEXT;
cairo_font_extents_t font_extents;
cairo_text_extents_t extents;
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 black */
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 blue */
cairo_set_source_rgb (cr, 0, 0, 1);
cairo_move_to (cr, BORDER, BORDER + font_extents.height + 2*BORDER + font_extents.ascent);
cairo_text_path (cr, text);
cairo_fill (cr);
return CAIRO_TEST_SUCCESS;
}
CAIRO_TEST (user_font,
"Tests user font feature",
"font, user-font", /* keywords */
"cairo >= 1.7.4", /* requirements */
WIDTH, HEIGHT,
NULL, draw)
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