100 lines
3.0 KiB
C++
100 lines
3.0 KiB
C++
/*
|
|
* Copyright © 2011 Google, Inc.
|
|
*
|
|
* This is part of HarfBuzz, a text shaping library.
|
|
*
|
|
* Permission is hereby granted, without written agreement and without
|
|
* license or royalty fees, to use, copy, modify, and distribute this
|
|
* software and its documentation for any purpose, provided that the
|
|
* above copyright notice and the following two paragraphs appear in
|
|
* all copies of this software.
|
|
*
|
|
* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
|
|
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
|
|
* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
|
|
* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
|
|
* DAMAGE.
|
|
*
|
|
* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
|
|
* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
|
|
* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
|
|
* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
|
|
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
|
|
*
|
|
* Google Author(s): Behdad Esfahbod
|
|
*/
|
|
|
|
#include "options.hh"
|
|
#include "helper-cairo.hh"
|
|
|
|
#ifndef VIEW_CAIRO_HH
|
|
#define VIEW_CAIRO_HH
|
|
|
|
|
|
struct view_cairo_t {
|
|
view_cairo_t (option_parser_t *parser)
|
|
: output_options (parser, helper_cairo_supported_formats),
|
|
view_options (parser) {}
|
|
~view_cairo_t (void) {
|
|
if (debug)
|
|
cairo_debug_reset_static_data ();
|
|
}
|
|
|
|
void init (const font_options_t *font_opts)
|
|
{
|
|
lines = g_array_new (false, false, sizeof (helper_cairo_line_t));
|
|
scale = double (view_options.font_size) / hb_face_get_upem (hb_font_get_face (font_opts->get_font ()));
|
|
}
|
|
void new_line (void)
|
|
{
|
|
}
|
|
void consume_text (hb_buffer_t *buffer,
|
|
const char *text,
|
|
unsigned int text_len,
|
|
hb_bool_t utf8_clusters)
|
|
{
|
|
}
|
|
void shape_failed (hb_buffer_t *buffer,
|
|
const char *text,
|
|
unsigned int text_len,
|
|
hb_bool_t utf8_clusters)
|
|
{
|
|
fail (false, "all shapers failed");
|
|
}
|
|
void consume_glyphs (hb_buffer_t *buffer,
|
|
const char *text,
|
|
unsigned int text_len,
|
|
hb_bool_t utf8_clusters)
|
|
{
|
|
direction = hb_buffer_get_direction (buffer);
|
|
helper_cairo_line_t l;
|
|
helper_cairo_line_from_buffer (&l, buffer, text, text_len, scale, utf8_clusters);
|
|
g_array_append_val (lines, l);
|
|
}
|
|
void finish (const font_options_t *font_opts)
|
|
{
|
|
render (font_opts);
|
|
|
|
for (unsigned int i = 0; i < lines->len; i++) {
|
|
helper_cairo_line_t &line = g_array_index (lines, helper_cairo_line_t, i);
|
|
line.finish ();
|
|
}
|
|
g_array_unref (lines);
|
|
}
|
|
|
|
protected:
|
|
|
|
output_options_t output_options;
|
|
view_options_t view_options;
|
|
|
|
void render (const font_options_t *font_opts);
|
|
void get_surface_size (cairo_scaled_font_t *scaled_font, double *w, double *h);
|
|
void draw (cairo_t *cr);
|
|
|
|
hb_direction_t direction; // Remove this, make segment_properties accessible
|
|
GArray *lines;
|
|
double scale;
|
|
};
|
|
|
|
#endif
|