cairo/test/ft-text-vertical-layout-type1.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 240
  34 #define TEXT_SIZE 30
  35
  36 static cairo_test_draw_function_t draw;
  37
  38 static const cairo_test_t test = {
  39     "ft-text-vertical-layout-type1",
  40     "Tests text rendering for vertical layout with Type1 fonts"
  41     "\nCan fail if an incorrect font is loaded---need to bundle the desired font",
  42     WIDTH, HEIGHT,
  43     draw
  44 };
  45
  46 static cairo_status_t
  47 create_scaled_font (cairo_t * cr,
  48                     cairo_scaled_font_t **out)
  49 {
  50     FcPattern *pattern, *resolved;
  51     FcResult result;
  52     cairo_font_face_t *font_face;
  53     cairo_scaled_font_t *scaled_font;
  54     cairo_font_options_t *font_options;
  55     cairo_matrix_t font_matrix, ctm;
  56     cairo_status_t status;
  57     double pixel_size;
  58
  59     font_options = cairo_font_options_create ();
  60
  61     cairo_get_font_options (cr, font_options);
  62
  63     pattern = FcPatternCreate ();
  64     if (pattern == NULL)
  65         return CAIRO_STATUS_NO_MEMORY;
  66
  67     FcPatternAddString (pattern, FC_FAMILY, (FcChar8 *)"Nimbus Sans L");
  68     FcPatternAddDouble (pattern, FC_PIXEL_SIZE, TEXT_SIZE);
  69     FcConfigSubstitute (NULL, pattern, FcMatchPattern);
  70
  71     cairo_ft_font_options_substitute (font_options, pattern);
  72
  73     FcDefaultSubstitute (pattern);
  74     resolved = FcFontMatch (NULL, pattern, &result);
  75     if (resolved == NULL) {
  76         FcPatternDestroy (pattern);
  77         return CAIRO_STATUS_NO_MEMORY;
  78     }
  79
  80     /* set layout to vertical */
  81     FcPatternDel (resolved, FC_VERTICAL_LAYOUT);
  82     FcPatternAddBool (resolved, FC_VERTICAL_LAYOUT, FcTrue);
  83
  84     FcPatternGetDouble (resolved, FC_PIXEL_SIZE, 0, &pixel_size);
  85
  86     font_face = cairo_ft_font_face_create_for_pattern (resolved);
  87
  88     cairo_matrix_init_translate (&font_matrix, 10, 30);
  89     cairo_matrix_rotate (&font_matrix, M_PI_2/3);
  90     cairo_matrix_scale (&font_matrix, pixel_size, pixel_size);
  91
  92     cairo_get_matrix (cr, &ctm);
  93
  94     scaled_font = cairo_scaled_font_create (font_face,
  95                                             &font_matrix,
  96                                             &ctm,
  97                                             font_options);
  98
  99     cairo_font_options_destroy (font_options);
 100     cairo_font_face_destroy (font_face);
 101     FcPatternDestroy (pattern);
 102     FcPatternDestroy (resolved);
 103
 104     status = cairo_scaled_font_status (scaled_font);
 105     if (status) {
 106         cairo_scaled_font_destroy (scaled_font);
 107         return status;
 108     }
 109
 110     *out = scaled_font;
 111     return CAIRO_STATUS_SUCCESS;
 112 }
 113
 114 static cairo_test_status_t
 115 draw (cairo_t *cr, int width, int height)
 116 {
 117     cairo_text_extents_t extents;
 118     cairo_scaled_font_t *scaled_font;
 119     cairo_status_t status;
 120     const char text[] = "i-W";
 121     double line_width, x, y;
 122
 123     line_width = cairo_get_line_width (cr);
 124
 125     /* We draw in the default black, so paint white first. */
 126     cairo_save (cr);
 127     cairo_set_source_rgb (cr, 1.0, 1.0, 1.0); /* white */
 128     cairo_paint (cr);
 129     cairo_restore (cr);
 130
 131     status = create_scaled_font (cr, &scaled_font);
 132     if (status) {
 133         return cairo_test_status_from_status (cairo_test_get_context (cr),
 134                                               status);
 135     }
 136
 137     cairo_set_scaled_font (cr, scaled_font);
 138
 139     cairo_set_line_width (cr, 1.0);
 140     cairo_set_source_rgb (cr, 0, 0, 0); /* black */
 141     cairo_text_extents (cr, text, &extents);
 142     x = width  - (extents.width  + extents.x_bearing) - 5;
 143     y = height - (extents.height + extents.y_bearing) - 5;
 144     cairo_move_to (cr, x, y);
 145     cairo_show_text (cr, text);
 146     cairo_rectangle (cr,
 147                      x + extents.x_bearing - line_width / 2,
 148                      y + extents.y_bearing - line_width / 2,
 149                      extents.width  + line_width,
 150                      extents.height + line_width);
 151     cairo_stroke (cr);
 152
 153     cairo_set_source_rgb (cr, 0, 0, 1); /* blue */
 154     cairo_text_extents (cr, text, &extents);
 155     x = -extents.x_bearing + 5;
 156     y = -extents.y_bearing + 5;
 157     cairo_move_to (cr, x, y);
 158     cairo_text_path (cr, text);
 159     cairo_fill (cr);
 160     cairo_rectangle (cr,
 161                      x + extents.x_bearing - line_width / 2,
 162                      y + extents.y_bearing - line_width / 2,
 163                      extents.width  + line_width,
 164                      extents.height + line_width);
 165     cairo_stroke (cr);
 166
 167     cairo_scaled_font_destroy (scaled_font);
 168
 169     return CAIRO_TEST_SUCCESS;
 170 }
 171
 172 int
 173 main (void)
 174 {
 175     return cairo_test (&test);
 176 }