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Two more small bugs introduced by the B-tree reorg: scroll() now

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requires fix_cpos() to be called after it (otherwise cpos might point
to a line that isn't where you remember it being), and a mis-aimed
incpos() was causing forward selection dragging not to include the
char under the mouse. Both fixed.

[originally from svn r1063]
This commit is contained in:
Simon Tatham 2001-04-17 09:25:52 +00:00
parent 04b2c2b53e
commit 34d2d98bdd
1 changed files with 8 additions and 1 deletions
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9
terminal.c
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@ -461,6 +461,11 @@ static void check_selection (pos from, pos to) {
* Scroll the screen. (`lines' is +ve for scrolling forward, -ve
* for backward.) `sb' is TRUE if the scrolling is permitted to
* affect the scrollback buffer.
*
* NB this function invalidates all pointers into lines of the
* screen data structures. In particular, you MUST call fix_cpos
* after calling scroll() and before doing anything else that
* uses the cpos shortcut pointer.
*/
static void scroll (int topline, int botline, int lines, int sb) {
unsigned long *line, *line2;
@ -1244,12 +1249,14 @@ void term_out(void) {
compatibility(VT102);
if (curs.y <= marg_b)
scroll (curs.y, marg_b, -def(esc_args[0], 1), FALSE);
fix_cpos;
seen_disp_event = TRUE;
break;
case 'M': /* delete lines */
compatibility(VT102);
if (curs.y <= marg_b)
scroll (curs.y, marg_b, def(esc_args[0], 1), TRUE);
fix_cpos;
seen_disp_event = TRUE;
break;
case '@': /* insert chars */
@ -2218,7 +2225,7 @@ void term_mouse (Mouse_Button b, Mouse_Action a, int x, int y) {
} else {
selstart = selanchor;
selend = selpoint;
incpos(selpoint);
incpos(selend);
}
sel_spread();
} else if ((b == MB_SELECT || b == MB_EXTEND) && a == MA_RELEASE) {