X-Git-Url: https://git.distorted.org.uk/u/mdw/putty/blobdiff_plain/365660096382ada66bee99e2d6794cbb85e60124..f668fdf37d5b25f354c8541c1c6dda7c74cb6444:/terminal.h

diff --git a/terminal.h b/terminal.h
index d4eef398..606d7939 100644
--- a/terminal.h
+++ b/terminal.h
@@ -33,15 +33,42 @@ typedef struct termchar termchar;
 typedef struct termline termline;
 
 struct termchar {
+    /*
+     * Any code in terminal.c which definitely needs to be changed
+     * when extra fields are added here is labelled with a comment
+     * saying FULL-TERMCHAR.
+     */
     unsigned long chr;
     unsigned long attr;
+
+    /*
+     * The cc_next field is used to link multiple termchars
+     * together into a list, so as to fit more than one character
+     * into a character cell (Unicode combining characters).
+     * 
+     * cc_next is a relative offset into the current array of
+     * termchars. I.e. to advance to the next character in a list,
+     * one does `tc += tc->next'.
+     * 
+     * Zero means end of list.
+     */
+    int cc_next;
 };
 
 struct termline {
     unsigned short lattr;
-    int cols;
+    int cols;			       /* number of real columns on the line */
+    int size;			       /* number of allocated termchars
+					* (cc-lists may make this > cols) */
     int temporary;		       /* TRUE if decompressed from scrollback */
+    int cc_free;		       /* offset to first cc in free list */
+    struct termchar *chars;
+};
+
+struct bidi_cache_entry {
+    int width;
     struct termchar *chars;
+    int *forward, *backward;	       /* the permutations of line positions */
 };
 
 struct terminal_tag {
@@ -55,8 +82,6 @@ struct terminal_tag {
     int tempsblines;		       /* number of lines in temporary
 					  scrollback */
 
-    termchar *cpos;		       /* cursor position (convenience) */
-
     termline **disptext;	       /* buffer of text on real screen */
     int dispcursx, dispcursy;	       /* location of cursor on real screen */
     int curstype;		       /* type of cursor on real screen */
@@ -70,9 +95,6 @@ struct terminal_tag {
 
 #define TTYPE termchar
 #define TSIZE (sizeof(TTYPE))
-#define fix_cpos do { \
-    term->cpos = lineptr(term->curs.y)->chars + term->curs.x; \
-} while(0)
 
 #ifdef OPTIMISE_SCROLL
     struct scrollregion *scrollhead, *scrolltail;
@@ -96,7 +118,7 @@ struct terminal_tag {
     int cursor_on;		       /* cursor enabled flag */
     int reset_132;		       /* Flag ESC c resets to 80 cols */
     int use_bce;		       /* Use Background coloured erase */
-    int blinker;		       /* When blinking is the cursor on ? */
+    int cblinker;		       /* When blinking is the cursor on ? */
     int tblinker;		       /* When the blinking text is on */
     int blink_is_real;		       /* Actually blink blinking text */
     int term_echoing;		       /* Does terminal want local echo? */
@@ -115,15 +137,12 @@ struct terminal_tag {
     int rows, cols, savelines;
     int has_focus;
     int in_vbell;
-    unsigned long vbell_startpoint;
+    long vbell_end;
     int app_cursor_keys, app_keypad_keys, vt52_mode;
     int repeat_off, cr_lf_return;
     int seen_disp_event;
     int big_cursor;
 
-    long last_blink;		       /* used for real blinking control */
-    long last_tblink;
-
     int xterm_mouse;		       /* send mouse messages to app */
     int mouse_is_down;		       /* used while tracking mouse buttons */
 
@@ -225,11 +244,26 @@ struct terminal_tag {
     int in_term_out;
 
     /*
+     * We schedule a window update shortly after receiving terminal
+     * data. This tracks whether one is currently pending.
+     */
+    int window_update_pending;
+    long next_update;
+
+    /*
+     * Track pending blinks and tblinks.
+     */
+    int tblink_pending, cblink_pending;
+    long next_tblink, next_cblink;
+
+    /*
      * These are buffers used by the bidi and Arabic shaping code.
      */
     termchar *ltemp;
+    int ltemp_size;
     bidi_char *wcFrom, *wcTo;
-    termchar **pre_bidi_cache, **post_bidi_cache;
+    int wcFromTo_size;
+    struct bidi_cache_entry *pre_bidi_cache, *post_bidi_cache;
     int bidi_cache_size;
 };