test/ft-text-vertical-layout-type3.c

   1 /*
   2  * Copyright © 2006 Jinghua Luo
   3  *
   4  * Permission to use, copy, modify, distribute, and sell this software
   5  * and its documentation for any purpose is hereby granted without
   6  * fee, provided that the above copyright notice appear in all copies
   7  * and that both that copyright notice and this permission notice
   8  * appear in supporting documentation, and that the name of
   9  * Red Hat, Inc. not be used in advertising or publicity pertaining to
  10  * distribution of the software without specific, written prior
  11  * permission. Red Hat, Inc. makes no representations about the
  12  * suitability of this software for any purpose.  It is provided "as
  13  * is" without express or implied warranty.
  14  *
  15  * JINGHUA LUO DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
  16  * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
  17  * FITNESS, IN NO EVENT SHALL RED HAT, INC. BE LIABLE FOR ANY SPECIAL,
  18  * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
  19  * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
  20  * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
  21  * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  22  *
  23  * Author: Jinghua Luo <sunmoon1997@gmail.com>
  24  * Derived from:
  25  *  text-antialias-none.c,
  26  *  ft-font-create-for-ft-face.c.
  27  * Original Author: Carl D. Worth <cworth@cworth.org>
  28  */
  29 #include "cairo-test.h"
  30 #include <cairo-ft.h>
  31
  32 #define WIDTH  80
  33 #define HEIGHT 200
  34 #define TEXT_SIZE 30
  35
  36 static cairo_test_draw_function_t draw;
  37
  38 cairo_test_t test = {
  39     "ft-text-vertical-layout-type3",
  40     "Tests text rendering for vertical layout with TrueType fonts",
  41     WIDTH, HEIGHT,
  42     draw
  43 };
  44
  45 static cairo_scaled_font_t *
  46 create_scaled_font (cairo_t * cr)
  47 {
  48     FcPattern *pattern, *resolved;
  49     FcResult result;
  50     cairo_font_face_t *font_face;
  51     cairo_scaled_font_t *scaled_font;
  52     cairo_font_options_t *font_options;
  53     cairo_matrix_t font_matrix, ctm;
  54     double pixel_size;
  55
  56     font_options = cairo_font_options_create ();
  57
  58     cairo_get_font_options (cr, font_options);
  59
  60     pattern = FcPatternCreate ();
  61
  62     FcPatternAddString (pattern, FC_FAMILY, (FcChar8 *)"Bitstream Vera Sans");
  63     FcPatternAddDouble (pattern, FC_PIXEL_SIZE, TEXT_SIZE);
  64     FcConfigSubstitute (NULL, pattern, FcMatchPattern);
  65
  66     cairo_ft_font_options_substitute (font_options, pattern);
  67
  68     FcDefaultSubstitute (pattern);
  69     resolved = FcFontMatch (NULL, pattern, &result);
  70
  71     /* set layout to vertical */
  72     FcPatternDel (resolved, FC_VERTICAL_LAYOUT);
  73     FcPatternAddBool (resolved, FC_VERTICAL_LAYOUT, FcTrue);
  74
  75     FcPatternGetDouble (resolved, FC_PIXEL_SIZE, 0, &pixel_size);
  76
  77     font_face = cairo_ft_font_face_create_for_pattern (resolved);
  78
  79     cairo_matrix_init_translate (&font_matrix, 10, 30);
  80     cairo_matrix_rotate (&font_matrix, M_PI_2/3);
  81     cairo_matrix_scale (&font_matrix, pixel_size, pixel_size);
  82
  83     cairo_get_matrix (cr, &ctm);
  84
  85     scaled_font = cairo_scaled_font_create (font_face,
  86                                             &font_matrix,
  87                                             &ctm,
  88                                             font_options);
  89
  90     cairo_font_options_destroy (font_options);
  91     cairo_font_face_destroy (font_face);
  92     FcPatternDestroy (pattern);
  93     FcPatternDestroy (resolved);
  94
  95     return scaled_font;
  96 }
  97
  98 static cairo_test_status_t
  99 draw (cairo_t *cr, int width, int height)
 100 {
 101     cairo_text_extents_t extents;
 102     cairo_scaled_font_t * scaled_font;
 103     static char text[] = "i-W";
 104     double line_width, x, y;
 105
 106     line_width = cairo_get_line_width (cr);
 107
 108     /* We draw in the default black, so paint white first. */
 109     cairo_save (cr);
 110     cairo_set_source_rgb (cr, 1.0, 1.0, 1.0); /* white */
 111     cairo_paint (cr);
 112     cairo_restore (cr);
 113
 114     scaled_font = create_scaled_font (cr);
 115     cairo_set_scaled_font (cr, scaled_font);
 116
 117     cairo_set_line_width (cr, 1.0);
 118     cairo_set_source_rgb (cr, 0, 0, 0); /* black */
 119     cairo_text_extents (cr, text, &extents);
 120     x = width  - (extents.width  + extents.x_bearing) - 5;
 121     y = height - (extents.height + extents.y_bearing) - 5;
 122     cairo_move_to (cr, x, y);
 123     cairo_show_text (cr, text);
 124     cairo_rectangle (cr,
 125                      x + extents.x_bearing - line_width / 2,
 126                      y + extents.y_bearing - line_width / 2,
 127                      extents.width  + line_width,
 128                      extents.height + line_width);
 129     cairo_stroke (cr);
 130
 131     cairo_set_source_rgb (cr, 0, 0, 1); /* blue */
 132     cairo_text_extents (cr, text, &extents);
 133     x = -extents.x_bearing + 5;
 134     y = -extents.y_bearing + 5;
 135     cairo_move_to (cr, x, y);
 136     cairo_text_path (cr, text);
 137     cairo_fill (cr);
 138     cairo_rectangle (cr,
 139                      x + extents.x_bearing - line_width / 2,
 140                      y + extents.y_bearing - line_width / 2,
 141                      extents.width  + line_width,
 142                      extents.height + line_width);
 143     cairo_stroke (cr);
 144
 145     cairo_scaled_font_destroy (scaled_font);
 146
 147     return CAIRO_TEST_SUCCESS;
 148 }
 149
 150 int
 151 main (void)
 152 {
 153     return cairo_test (&test);
 154 }