106 lines
3.1 KiB
C++
106 lines
3.1 KiB
C++
/*
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* Copyright © 2011 Google, Inc.
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*
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* This is part of HarfBuzz, a text shaping library.
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*
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* Permission is hereby granted, without written agreement and without
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* license or royalty fees, to use, copy, modify, and distribute this
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* software and its documentation for any purpose, provided that the
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* above copyright notice and the following two paragraphs appear in
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* all copies of this software.
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*
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* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
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* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
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* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
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* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
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* DAMAGE.
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*
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* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
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* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
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* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
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* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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*
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* Google Author(s): Behdad Esfahbod
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*/
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#include "options.hh"
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#include "helper-cairo.hh"
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#ifndef VIEW_CAIRO_HH
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#define VIEW_CAIRO_HH
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struct view_cairo_t
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{
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view_cairo_t (option_parser_t *parser)
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: output_options (parser, helper_cairo_supported_formats),
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view_options (parser),
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lines (0), scale (1.0), direction (HB_DIRECTION_INVALID) {}
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~view_cairo_t (void) {
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if (debug)
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cairo_debug_reset_static_data ();
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}
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void init (const font_options_t *font_opts)
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{
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lines = g_array_new (false, false, sizeof (helper_cairo_line_t));
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scale = double (view_options.font_size) / hb_face_get_upem (hb_font_get_face (font_opts->get_font ()));
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}
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void new_line (void)
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{
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}
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void consume_text (hb_buffer_t *buffer,
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const char *text,
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unsigned int text_len,
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hb_bool_t utf8_clusters)
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{
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}
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void shape_failed (hb_buffer_t *buffer,
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const char *text,
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unsigned int text_len,
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hb_bool_t utf8_clusters)
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{
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fail (false, "all shapers failed");
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}
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void consume_glyphs (hb_buffer_t *buffer,
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const char *text,
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unsigned int text_len,
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hb_bool_t utf8_clusters)
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{
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direction = hb_buffer_get_direction (buffer);
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helper_cairo_line_t l;
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helper_cairo_line_from_buffer (&l, buffer, text, text_len, scale, utf8_clusters);
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g_array_append_val (lines, l);
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}
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void finish (const font_options_t *font_opts)
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{
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render (font_opts);
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for (unsigned int i = 0; i < lines->len; i++) {
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helper_cairo_line_t &line = g_array_index (lines, helper_cairo_line_t, i);
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line.finish ();
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}
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#if GLIB_CHECK_VERSION (2, 22, 0)
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g_array_unref (lines);
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#else
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g_array_free (lines, TRUE);
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#endif
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}
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protected:
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output_options_t output_options;
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view_options_t view_options;
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void render (const font_options_t *font_opts);
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void get_surface_size (cairo_scaled_font_t *scaled_font, double *w, double *h);
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void draw (cairo_t *cr);
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hb_direction_t direction; // Remove this, make segment_properties accessible
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GArray *lines;
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double scale;
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};
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#endif
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