/* * 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 * Behdad Esfahbod * Adrian Johnson */ #include #include #include "cairo-test.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); } 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)