billiob pushed a commit to branch master.
commit 74aa62f13ca28904ac311ccf22fdde1c6ec37741
Author: Boris Faure <[email protected]>
Date: Sun Mar 24 21:06:34 2013 +0100
reflow: horizontally shrink backlog
---
src/bin/termpty.c | 156 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 156 insertions(+)
diff --git a/src/bin/termpty.c b/src/bin/termpty.c
index eaadd77..24c4df4 100644
--- a/src/bin/termpty.c
+++ b/src/bin/termpty.c
@@ -798,6 +798,162 @@ static void
_termpty_horizontally_shrink(Termpty *ty, int old_w, int old_h,
Termcell *old_screen)
{
+ int i,
+ new_back_pos = 0,
+ new_back_scroll_num = 0,
+ old_y,
+ old_x,
+ old_circular_offset = ty->circular_offset,
+ x = 0,
+ y = 0;
+ Termsave **new_back,
+ *new_ts = NULL,
+ *old_ts = NULL;
+ Termcell *old_cells = NULL;
+ Eina_Bool rewrapping = EINA_FALSE;
+
+ if (!ty->backmax || !ty->back)
+ goto shrink_screen;
+
+ new_back = calloc(sizeof(Termsave*), ty->backmax);
+
+ for (i = 0; i < ty->backmax; i++)
+ {
+ Termsave *ts;
+ Termcell *cells;
+ int remaining_width;
+
+ if (ty->backscroll_num == ty->backmax - 1)
+ ts = ty->back[(ty->backpos + i) % ty->backmax];
+ else
+ ts = ty->back[i];
+ if (!ts)
+ break;
+
+#define PUSH_BACK_TS(_ts) do { \
+ if (new_back[new_back_pos]) \
+ free(new_back[new_back_pos]); \
+ new_back[new_back_pos++] = _ts; \
+ new_back_scroll_num++; \
+ if (new_back_pos >= ty->backmax) \
+ new_back_pos = 0; \
+ } while(0)
+
+ if (!ts->w)
+ {
+ if (rewrapping)
+ {
+ rewrapping = EINA_FALSE;
+ new_ts = calloc(1, sizeof(Termsave) +
+ (old_ts->w - 1) * sizeof(Termcell));
+ new_ts->w = old_ts->w;
+ memcpy(new_ts->cell, old_cells, old_ts->w *
sizeof(Termcell));
+
+ PUSH_BACK_TS(new_ts);
+
+ free(old_ts);
+ old_ts = NULL;
+ free(ts);
+ }
+ else
+ PUSH_BACK_TS(ts);
+ continue;
+ }
+
+ if (!old_ts && ts->w <= ty->w)
+ {
+ PUSH_BACK_TS(ts);
+ continue;
+ }
+
+ cells = ts->cell;
+
+ if (old_ts)
+ {
+ int len = MIN(old_ts->w + ts->w, ty->w);
+
+ new_ts = calloc(1, sizeof(Termsave) +
+ (len - 1) * sizeof(Termcell));
+ new_ts->w = len;
+ memcpy(new_ts->cell, old_cells,
+ old_ts->w * sizeof(Termcell));
+
+ remaining_width = len - old_ts->w;
+
+ memcpy(new_ts->cell + old_ts->w,
+ cells, remaining_width * sizeof(Termcell));
+
+ rewrapping = ts->cell[ts->w - 1].att.autowrapped;
+ cells += remaining_width;
+ ts->w -= remaining_width;
+
+ new_ts->cell[new_ts->w - 1].att.autowrapped =
+ rewrapping || ts->w > 0;
+
+ free(old_ts);
+ old_ts = NULL;
+
+ PUSH_BACK_TS(new_ts);
+ }
+
+ while (ts->w >= ty->w)
+ {
+ new_ts = calloc(1, sizeof(Termsave) +
+ (ty->w - 1) * sizeof(Termcell));
+ new_ts->w = ty->w;
+ memcpy(new_ts->cell, cells, ty->w * sizeof(Termcell));
+ rewrapping = ts->cell[ts->w - 1].att.autowrapped;
+
+ new_ts->cell[new_ts->w - 1].att.autowrapped = 1;
+ if (!rewrapping && ty->w == ts->w)
+ new_ts->cell[new_ts->w - 1].att.autowrapped = 0;
+
+ cells += ty->w;
+ ts->w -= ty->w;
+
+ PUSH_BACK_TS(new_ts);
+ }
+
+ if (!ts->w)
+ {
+ old_cells = 0;
+ free(old_ts);
+ old_ts = NULL;
+ rewrapping = EINA_FALSE;
+ continue;
+ }
+
+ if (rewrapping)
+ {
+ old_cells = cells;
+ old_ts = ts;
+ }
+ else
+ {
+ new_ts = calloc(1, sizeof(Termsave) +
+ (ts->w - 1) * sizeof(Termcell));
+ new_ts->w = ts->w;
+ memcpy(new_ts->cell, cells, ts->w * sizeof(Termcell));
+
+ PUSH_BACK_TS(new_ts);
+ free(ts);
+ }
+ }
+#undef PUSH_BACK_TS
+
+ ty->backpos = new_back_pos;
+ ty->backscroll_num = new_back_scroll_num;
+ if (ty->backscroll_num >= ty->backmax)
+ ty->backscroll_num = ty->backmax - 1;
+
+ free(ty->back);
+ ty->back = new_back;
+
+shrink_screen:
+
+ if (ty->altbuf)
+ return;
+
/* TODO */
}
#undef OLD_SCREEN
--
------------------------------------------------------------------------------
Precog is a next-generation analytics platform capable of advanced
analytics on semi-structured data. The platform includes APIs for building
apps and a phenomenal toolset for data science. Developers can use
our toolset for easy data analysis & visualization. Get a free account!
http://www2.precog.com/precogplatform/slashdotnewsletter
