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ui: terminal emulation fix.

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Merge remote-tracking branch 'remotes/kraxel/tags/ui-20190704-pull-request' into staging

ui: terminal emulation fix.

# gpg: Signature made Thu 04 Jul 2019 08:04:31 BST
# gpg:                using RSA key 4CB6D8EED3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>" [full]
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>" [full]
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>" [full]
# Primary key fingerprint: A032 8CFF B93A 17A7 9901  FE7D 4CB6 D8EE D3E8 7138

* remotes/kraxel/tags/ui-20190704-pull-request:
  console: fix cell overflow

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2019-07-04 16:43:13 +01:00
commit c3e1d838cf
1 changed files with 8 additions and 2 deletions
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10
ui/console.c
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@ -484,7 +484,7 @@ static void text_console_resize(QemuConsole *s)
if (s->width < w1)
w1 = s->width;
cells = g_new(TextCell, s->width * s->total_height);
cells = g_new(TextCell, s->width * s->total_height + 1);
for(y = 0; y < s->total_height; y++) {
c = &cells[y * s->width];
if (w1 > 0) {
@ -541,6 +541,9 @@ static void update_xy(QemuConsole *s, int x, int y)
y2 += s->total_height;
}
if (y2 < s->height) {
if (x >= s->width) {
x = s->width - 1;
}
c = &s->cells[y1 * s->width + x];
vga_putcharxy(s, x, y2, c->ch,
&(c->t_attrib));
@ -787,6 +790,9 @@ static void console_handle_escape(QemuConsole *s)
static void console_clear_xy(QemuConsole *s, int x, int y)
{
int y1 = (s->y_base + y) % s->total_height;
if (x >= s->width) {
x = s->width - 1;
}
TextCell *c = &s->cells[y1 * s->width + x];
c->ch = ' ';
c->t_attrib = s->t_attrib_default;
@ -992,7 +998,7 @@ static void console_putchar(QemuConsole *s, int ch)
break;
case 1:
/* clear from beginning of line */
for (x = 0; x <= s->x; x++) {
for (x = 0; x <= s->x && x < s->width; x++) {
console_clear_xy(s, x, s->y);
}
break;