Bug 694851: enhance fz_load_system_font

For SumatraPDF, the following changes are required:
* fz_load_system_font is called from pdf_load_builtin_font as well so
  that Arial, Courier New, etc. can be loaded from the system instead
  of their Nimbus replacements. In order to distinguish between calls
  from pdf_load_builtin_font and pdf_load_substitute_font, an
  is_substitute argument is added.
* fz_load_system_cjk_font is added and called from
  pdf_load_substitute_cjk_font so that a better replacement font can
  be loaded instead of DroidSansFallback.
* Both fz_load_system_font and fz_load_system_cjk_font return fz_font*
  instead of fz_buffer* so that implementers aren't required to load
  fonts into memory (SumatraPDF uses fz_new_font_from_file for system
  fonts).

In addition to that, fz_load_system_font_func is renamed to
fz_load_system_font_funcs since it now accepts two functions, and the
PDF_ROS_* constants are renamed to FZ_ADOBE_* (collection names aren't
passed as const char* so that implementers know which collections to
expect). For convenience, fz_load_*_font also never throws since
currently all callers have further fallbacks available.

0 files changed, 0 insertions, 0 deletions