Restructure display code

Use pull instead of push based model for display code. Previously view.c
was calling into the ui frontend code, with the new scheme this switches
around: the necessary data is fetched by the ui as necessary.

The UI independent display code is moved out of view.c/ui-curses.c into
vis.c. The cell styles are now directly embedded into the Cell struct.

New UI styles are introduced for:

 - status bar (focused / non-focused)
 - info message
 - window separator
 - EOF symbol

You will have to update your color themes.

The terminal output code is further abstracted into a generic ui-terminal.c
part which keeps track of the whole in-memory cell matrix and #includes
ui-terminal-curses.c for the actual terminal output. This architecture
currently assumes that there are no overlapping windows. It will also
allow non-curses based terminal user interfaces.

1 files changed, 2 insertions, 0 deletions

diff --git a/vis.h b/vis.h
index fb9f4b1..46123ea 100644
--- a/vis.h
+++ b/vis.h
@@ -96,6 +96,7 @@ void vis_redraw(Vis*);
 void vis_update(Vis*);
 /* temporarily supsend the editor process, resumes upon receiving SIGCONT */
 void vis_suspend(Vis*);
+void vis_resume(Vis*);
 
 /* creates a new window, and loads the given file. if filename is NULL
  * an unamed / empty buffer is created. If the given file is already opened
@@ -118,6 +119,7 @@ void vis_window_close(Win*);
 bool vis_window_split(Win*);
 /* change status message of this window */
 void vis_window_status(Win*, const char *status);
+void vis_window_draw(Win*);
 /* focus the next / previous window */
 void vis_window_next(Vis*);
 void vis_window_prev(Vis*);