#include <stdlib.h>
#include <stdio.h>
#include "cairo-test.h"
#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 END_GLYPH 0
#define TEXT "cairo"
#define CAIRO_BITSWAP8(c) ((((c) * 0x0802LU & 0x22110LU) | ((c) * 0x8020LU & 0x88440LU)) * 0x10101LU >> 16)
#ifdef WORDS_BIGENDIAN
#define CAIRO_BITSWAP8_IF_LITTLE_ENDIAN(c) (c)
#else
#define CAIRO_BITSWAP8_IF_LITTLE_ENDIAN(c) CAIRO_BITSWAP8(c)
#endif
typedef struct {
unsigned long ucs4;
int width;
char data[8];
} 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 = 1;
metrics->descent = 0;
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;
}
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;
unsigned char *data;
cairo_surface_t *image;
cairo_pattern_t *pattern;
cairo_matrix_t matrix;
uint8_t byte;
metrics->x_advance = (glyphs[glyph].width + 1) / 8.0;
image = cairo_image_surface_create (CAIRO_FORMAT_A1, glyphs[glyph].width, 8);
if (cairo_surface_status (image))
return cairo_surface_status (image);
data = cairo_image_surface_get_data (image);
for (i = 0; i < 8; i++) {
byte = glyphs[glyph].data[i];
*data = CAIRO_BITSWAP8_IF_LITTLE_ENDIAN (byte);
data += cairo_image_surface_get_stride (image);
}
cairo_surface_mark_dirty (image);
pattern = cairo_pattern_create_for_surface (image);
cairo_surface_destroy (image);
cairo_matrix_init_identity (&matrix);
cairo_matrix_scale (&matrix, 1.0/8.0, 1.0/8.0);
cairo_matrix_translate (&matrix, 0, -8);
cairo_matrix_invert (&matrix);
cairo_pattern_set_matrix (pattern, &matrix);
cairo_set_source (cr, pattern);
cairo_mask (cr, pattern);
cairo_pattern_destroy (pattern);
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_user_font_face_create (cairo_font_face_t **out)
{
static const test_scaled_font_glyph_t glyphs [] = {
{ 'c', 6, { 0x00, 0x38, 0x44, 0x80, 0x80, 0x80, 0x44, 0x38 } },
{ 'a', 6, { 0x00, 0x70, 0x88, 0x3c, 0x44, 0x84, 0x8c, 0x74 } },
{ 'i', 1, { 0x80, 0x00, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80 } },
{ 'r', 6, { 0x00, 0xb8, 0xc4, 0x80, 0x80, 0x80, 0x80, 0x80 } },
{ 'o', 7, { 0x00, 0x38, 0x44, 0x82, 0x82, 0x82, 0x44, 0x38 } },
{ -1, 8, { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } },
};
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);
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);
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);
cairo_set_source_rgb (cr, 0, 0, 0);
cairo_move_to (cr, BORDER, BORDER + font_extents.ascent);
cairo_show_text (cr, text);
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_mask,
"Tests a user-font using cairo_mask with bitmap images",
"user-font, mask",
NULL,
WIDTH, HEIGHT,
NULL, draw)