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--- st.c
+++ st.c
@@ -1435,89 +1598,93 @@ tsetchar(Rune u, const Glyph *attr, int x, int y)
} else if (term.line[y][x].mode & ATTR_WDUMMY) {
term.line[y][x-1].u = ' ';
term.line[y][x-1].mode &= ~ATTR_WIDE;
- }
+ }
term.dirty[y] = 1;
term.line[y][x] = *attr;
term.line[y][x].u = u;
+ term.line[y][x].mode |= ATTR_SET;
}
void
-tclearregion(int x1, int y1, int x2, int y2)
+tclearglyph(Glyph *gp, int usecurattr)
{
- int x, y, temp;
- Glyph *gp;
+ if (usecurattr) {
+ gp->fg = term.c.attr.fg;
+ gp->bg = term.c.attr.bg;
+ } else {
+ gp->fg = defaultfg;
+ gp->bg = defaultbg;
+ }
+ gp->mode = ATTR_NULL;
+ gp->u = ' ';
+}
- if (x1 > x2)
- temp = x1, x1 = x2, x2 = temp;
- if (y1 > y2)
- temp = y1, y1 = y2, y2 = temp;
+void
+tclearregion(int x1, int y1, int x2, int y2, int usecurattr)
+{
+ int x, y;
- LIMIT(x1, 0, term.col-1);
- LIMIT(x2, 0, term.col-1);
- LIMIT(y1, 0, term.row-1);
- LIMIT(y2, 0, term.row-1);
+ /* regionselected() takes relative coordinates */
+ if (regionselected(x1+term.scr, y1+term.scr, x2+term.scr, y2+term.scr))
+ selremove();
for (y = y1; y <= y2; y++) {
term.dirty[y] = 1;
- for (x = x1; x <= x2; x++) {
- gp = &term.line[y][x];
- if (selected(x, y))
- selclear();
- gp->fg = term.c.attr.fg;
- gp->bg = term.c.attr.bg;
- gp->mode = 0;
- gp->u = ' ';
- }
+ for (x = x1; x <= x2; x++)
+ tclearglyph(&term.line[y][x], usecurattr);
}
}
void
tdeletechar(int n)
{
- int dst, src, size;
- Glyph *line;
-
- LIMIT(n, 0, term.col - term.c.x);
+ int src, dst, size;
+ Line line;
+ if (n <= 0)
+ return;
dst = term.c.x;
- src = term.c.x + n;
+ src = MIN(term.c.x + n, term.col);
size = term.col - src;
- line = term.line[term.c.y];
-
- memmove(&line[dst], &line[src], size * sizeof(Glyph));
- tclearregion(term.col-n, term.c.y, term.col-1, term.c.y);
+ if (size > 0) { /* otherwise src would point beyond the array
+ https://stackoverflow.com/questions/29844298 */
+ line = term.line[term.c.y];
+ memmove(&line[dst], &line[src], size * sizeof(Glyph));
+ }
+ tclearregion(dst + size, term.c.y, term.col - 1, term.c.y, 1);
}
void
tinsertblank(int n)
{
- int dst, src, size;
- Glyph *line;
+ int src, dst, size;
+ Line line;
- LIMIT(n, 0, term.col - term.c.x);
-
- dst = term.c.x + n;
+ if (n <= 0)
+ return;
+ dst = MIN(term.c.x + n, term.col);
src = term.c.x;
size = term.col - dst;
- line = term.line[term.c.y];
-
- memmove(&line[dst], &line[src], size * sizeof(Glyph));
- tclearregion(src, term.c.y, dst - 1, term.c.y);
+ if (size > 0) { /* otherwise dst would point beyond the array */
+ line = term.line[term.c.y];
+ memmove(&line[dst], &line[src], size * sizeof(Glyph));
+ }
+ tclearregion(src, term.c.y, dst - 1, term.c.y, 1);
}
void
tinsertblankline(int n)
{
if (BETWEEN(term.c.y, term.top, term.bot))
- tscrolldown(term.c.y, n, 0);
+ tscrolldown(term.c.y, n);
}
void
tdeleteline(int n)
{
if (BETWEEN(term.c.y, term.top, term.bot))
- tscrollup(term.c.y, n, 0);
+ tscrollup(term.c.y, term.bot, n, SCROLL_NOSAVEHIST);
}
int32_t
@@ -2001,9 +2173,9 @@ csihandle(void)
break;
case 'n': /* DSR – Device Status Report (cursor position) */
if (csiescseq.arg[0] == 6) {
- len = snprintf(buf, sizeof(buf), "\033[%i;%iR",
+ n = snprintf(buf, sizeof(buf), "\033[%i;%iR",
term.c.y+1, term.c.x+1);
- ttywrite(buf, len, 0);
+ ttywrite(buf, n, 0);
}
break;
case 'r': /* DECSTBM -- Set Scrolling Region */
|
