/*
* 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),
direction (HB_DIRECTION_INVALID),
lines (0), scale (1.0) {}
~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 ();
}
#if GLIB_CHECK_VERSION (2, 22, 0)
g_array_unref (lines);
#else
g_array_free (lines, TRUE);
#endif
}
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
