diff options
Diffstat (limited to 'libs/cairo-1.16.0/test/user-font-mask.c')
-rw-r--r-- | libs/cairo-1.16.0/test/user-font-mask.c | 253 |
1 files changed, 253 insertions, 0 deletions
diff --git a/libs/cairo-1.16.0/test/user-font-mask.c b/libs/cairo-1.16.0/test/user-font-mask.c new file mode 100644 index 0000000..cf548e6 --- /dev/null +++ b/libs/cairo-1.16.0/test/user-font-mask.c @@ -0,0 +1,253 @@ +/* + * 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> + * Adrian Johnson <ajohnson@redneon.com> + */ + +#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 END_GLYPH 0 +#define TEXT "cairo" + +/* Reverse the bits in a byte with 7 operations (no 64-bit): + * Devised by Sean Anderson, July 13, 2001. + * Source: http://graphics.stanford.edu/~seander/bithacks.html#ReverseByteWith32Bits + */ +#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 + + + +/* Simple glyph definition. data is an 8x8 bitmap. + */ +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; + } + + /* 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; + unsigned char *data; + cairo_surface_t *image; + cairo_pattern_t *pattern; + cairo_matrix_t matrix; + uint8_t byte; + + /* FIXME: We simply crash on out-of-bound glyph indices */ + + 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); + + /* 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_mask, + "Tests a user-font using cairo_mask with bitmap images", + "user-font, mask", /* keywords */ + NULL, /* requirements */ + WIDTH, HEIGHT, + NULL, draw) |