-/* $Id: macterm.c,v 1.60 2003/01/28 00:35:54 ben Exp $ */
+/* $Id: macterm.c,v 1.61 2003/02/01 12:26:33 ben Exp $ */
/*
* Copyright (c) 1999 Simon Tatham
* Copyright (c) 1999, 2002 Ben Harris
* Scroll the screen. (`lines' is +ve for scrolling forward, -ve
* for backward.)
*/
-void do_scroll(void *frontend, int topline, int botline, int lines) {
- Session *s = frontend;
+void do_scroll(Context ctx, int topline, int botline, int lines) {
+ Session *s = ctx;
Rect r;
RgnHandle scrollrgn = NewRgn();
RgnHandle movedupdate = NewRgn();
void do_cursor(Context, int, int, char *, int, unsigned long, int);
int char_width(Context ctx, int uc);
#ifdef OPTIMISE_SCROLL
-void do_scroll(void *, int, int, int);
+void do_scroll(Context, int, int, int);
#endif
void set_title(void *frontend, char *);
void set_icon(void *frontend, char *);
term->rows = term->cols = -1;
power_on(term);
term->beephead = term->beeptail = NULL;
+#ifdef OPTIMISE_SCROLL
+ term->scrollhead = term->scrolltail = NULL;
+#endif /* OPTIMISE_SCROLL */
term->nbeeps = 0;
term->lastbeep = FALSE;
term->beep_overloaded = FALSE;
#ifdef OPTIMISE_SCROLL
/*
+ * Add a scroll of a region on the screen into the pending scroll list.
+ * `lines' is +ve for scrolling forward, -ve for backward.
+ *
+ * If the scroll is on the same area as the last scroll in the list,
+ * merge them.
+ */
+void save_scroll(Terminal *term, int topline, int botline, int lines)
+{
+ struct scrollregion *newscroll;
+ if (term->scrolltail &&
+ term->scrolltail->topline == topline &&
+ term->scrolltail->botline == botline) {
+ term->scrolltail->lines += lines;
+ } else {
+ newscroll = smalloc(sizeof(struct scrollregion));
+ newscroll->topline = topline;
+ newscroll->botline = botline;
+ newscroll->lines = lines;
+ newscroll->next = NULL;
+
+ if (!term->scrollhead)
+ term->scrollhead = newscroll;
+ else
+ term->scrolltail->next = newscroll;
+ term->scrolltail = newscroll;
+ }
+}
+
+/*
* Scroll the physical display, and our conception of it in disptext.
*/
static void scroll_display(Terminal *term, int topline, int botline, int lines)
for (i = 0; i < distance; i++)
start[i] |= ATTR_INVALID;
}
- do_scroll(term->frontend, topline, botline, lines);
+ save_scroll(term, topline, botline, lines);
}
#endif /* OPTIMISE_SCROLL */
char ch[1024];
long cursor_background = ERASE_CHAR;
unsigned long ticks;
+#ifdef OPTIMISE_SCROLL
+ struct scrollregion *sr;
+#endif /* OPTIMISE_SCROLL */
/*
* Check the visual bell state.
}
term->dispcurs = NULL;
+#ifdef OPTIMISE_SCROLL
+ /* Do scrolls */
+ sr = term->scrollhead;
+ while (sr) {
+ struct scrollregion *next = sr->next;
+ do_scroll(ctx, sr->topline, sr->botline, sr->lines);
+ sfree(sr);
+ sr = next;
+ }
+ term->scrollhead = term->scrolltail = NULL;
+#endif /* OPTIMISE_SCROLL */
+
/* The normal screen data */
for (i = 0; i < term->rows; i++) {
unsigned long *ldata;
int y, x;
} pos;
+#ifdef OPTIMISE_SCROLL
+struct scrollregion {
+ struct scrollregion *next;
+ int topline; /* Top line of scroll region. */
+ int botline; /* Bottom line of scroll region. */
+ int lines; /* Number of lines to scroll by - +ve is forwards. */
+};
+#endif /* OPTIMISE_SCROLL */
+
struct terminal_tag {
int compatibility_level;
term->cpos = lineptr(term->curs.y) + term->curs.x; \
} while(0)
+#ifdef OPTIMISE_SCROLL
+ struct scrollregion *scrollhead, *scrolltail;
+#endif /* OPTIMISE_SCROLL */
+
unsigned long curr_attr, save_attr;
unsigned long erase_char;