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Lock screen when drawing on the calendar/notification panel

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Lock the screen if either the calendar panel or the notification bar is
updated to avoid race conditions.

Addresses BUG#6.

Note that we currently always use a screen-level lock, even if only one
window is affected. This is to be changed in the future.

Signed-off-by: Lukas Fleischer <calcurse@cryptocrack.de>
This commit is contained in:
Lukas Fleischer
2012-11-23 09:59:06 +01:00
parent e16ac0a8a8
commit a80f8dcf2c
4 changed files with 61 additions and 3 deletions
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26
src/calendar.c
View File

@@ -297,6 +297,7 @@ draw_monthly_view(struct window *cwin, struct date *current_day,
c_day_1 = (int)((ymd_to_scalar(yr, mo, 1 + sunday_first) - (long)1) % 7L);
/* Write the current month and year on top of the calendar */
wins_calendar_lock();
custom_apply_attr(cwin->p, ATTR_HIGHEST);
mvwprintw(cwin->p, ofs_y,
(SBAR_WIDTH - (strlen(_(monthnames[mo - 1])) + 5)) / 2,
@@ -310,6 +311,7 @@ draw_monthly_view(struct window *cwin, struct date *current_day,
mvwaddstr(cwin->p, ofs_y, ofs_x + 4 * j, _(daynames[1 + j - sunday_first]));
}
custom_remove_attr(cwin->p, ATTR_HIGHEST);
wins_calendar_unlock();
day_1_sav = (c_day_1 + 1) * 3 + c_day_1 - 7;
@@ -327,11 +329,12 @@ draw_monthly_view(struct window *cwin, struct date *current_day,
ofs_x = OFFX - day_1_sav - 4 * c_day;
}
/* This is today, so print it in yellow. */
wins_calendar_lock();
if (c_day == current_day->dd
&& current_day->mm == slctd_day.mm
&& current_day->yyyy == slctd_day.yyyy
&& current_day->dd != slctd_day.dd) {
/* This is today, so print it in yellow. */
custom_apply_attr(cwin->p, ATTR_LOWEST);
mvwprintw(cwin->p, ofs_y + 1,
ofs_x + day_1_sav + 4 * c_day + 1, "%2d", c_day);
@@ -347,10 +350,12 @@ draw_monthly_view(struct window *cwin, struct date *current_day,
mvwprintw(cwin->p, ofs_y + 1,
ofs_x + day_1_sav + 4 * c_day + 1, "%2d", c_day);
custom_remove_attr(cwin->p, ATTR_LOW);
} else
} else {
/* otherwise, print normal days in black */
mvwprintw(cwin->p, ofs_y + 1,
ofs_x + day_1_sav + 4 * c_day + 1, "%2d", c_day);
}
wins_calendar_unlock();
}
}
@@ -454,9 +459,11 @@ draw_weekly_view(struct window *cwin, struct date *current_day,
/* Print the week number. */
weeknum = ISO8601weeknum(&t);
wins_calendar_lock();
custom_apply_attr(cwin->p, ATTR_HIGHEST);
mvwprintw(cwin->p, 2, cwin->w - 9, "(# %02d)", weeknum);
custom_remove_attr(cwin->p, ATTR_HIGHEST);
wins_calendar_unlock();
/* Now draw calendar view. */
for (j = 0; j < WEEKINDAYS; j++) {
@@ -488,22 +495,28 @@ draw_weekly_view(struct window *cwin, struct date *current_day,
else
attr = 0;
wins_calendar_lock();
if (attr)
custom_apply_attr(cwin->p, attr);
mvwprintw(cwin->p, OFFY + 1, OFFX + 1 + 4 * j, "%02d", t.tm_mday);
if (attr)
custom_remove_attr(cwin->p, attr);
wins_calendar_unlock();
/* Draw slices indicating appointment times. */
memset(slices, 0, DAYSLICESNO * sizeof *slices);
if (day_chk_busy_slices(date, DAYSLICESNO, slices)) {
for (i = 0; i < DAYSLICESNO; i++) {
if (j != WEEKINDAYS - 1 && i != DAYSLICESNO - 1)
if (j != WEEKINDAYS - 1 && i != DAYSLICESNO - 1) {
wins_calendar_lock();
mvwhline(cwin->p, OFFY + 2 + i, OFFX + 3 + 4 * j, ACS_S9, 2);
wins_calendar_unlock();
}
if (slices[i]) {
int highlight;
highlight = (t.tm_mday == slctd_day.dd) ? 1 : 0;
wins_calendar_lock();
if (highlight)
custom_apply_attr(cwin->p, attr);
wattron(cwin->p, A_REVERSE);
@@ -512,6 +525,7 @@ draw_weekly_view(struct window *cwin, struct date *current_day,
wattroff(cwin->p, A_REVERSE);
if (highlight)
custom_remove_attr(cwin->p, attr);
wins_calendar_unlock();
}
}
}
@@ -521,11 +535,13 @@ draw_weekly_view(struct window *cwin, struct date *current_day,
}
/* Draw marks to indicate midday on the sides of the calendar. */
wins_calendar_lock();
custom_apply_attr(cwin->p, ATTR_HIGHEST);
mvwhline(cwin->p, OFFY + 1 + DAYSLICESNO / 2, OFFX, ACS_S9, 1);
mvwhline(cwin->p, OFFY + 1 + DAYSLICESNO / 2,
OFFX + WCALWIDTH - 3, ACS_S9, 1);
custom_remove_attr(cwin->p, ATTR_HIGHEST);
wins_calendar_unlock();
#undef DAYSLICESNO
}
@@ -537,8 +553,12 @@ void calendar_update_panel(struct window *cwin)
unsigned sunday_first;
calendar_store_current_date(&current_day);
wins_calendar_lock();
erase_window_part(cwin->p, 1, 3, cwin->w - 2, cwin->h - 2);
mvwhline(cwin->p, 2, 1, ACS_HLINE, cwin->w - 2);
wins_calendar_unlock();
sunday_first = calendar_week_begins_on_monday()? 0 : 1;
draw_calendar[calendar_view] (cwin, &current_day, sunday_first);