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[emacs-bidi] understanding Emacs' display engine
From: |
Kenichi Handa |
Subject: |
[emacs-bidi] understanding Emacs' display engine |
Date: |
Fri, 19 Jan 2001 17:36:16 +0900 (JST) |
User-agent: |
SEMI/1.14.3 (Ushinoya) FLIM/1.14.2 (Yagi-Nishiguchi) APEL/10.2 Emacs/21.0.94 (sparc-sun-solaris2.6) MULE/5.0 (SAKAKI) |
This is a supplemental note to Eli's mail.
From the experience of my previous patch for basic bidi
support, I think you should at first understand the function
display_line (in xdisp.c) and these important functions
called from it:
get_next_display_element,
set_iterator_to_next
PRODUCE_GLYPHS
The last one is an macro, and on X, actually,
x_produce_glyphs is called.
Next, move_it_XXXX (in xdisp.c) are also important.
And, at last, the actual code that draw strings on X window
starts from x_draw_glyphs and jump macros placed before
that.
I think dispnew.c is not that important, at least, for
starters.
---
Ken'ichi HANDA
address@hidden
- [emacs-bidi] understanding Emacs' display engine,
Kenichi Handa <=