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url-mode: snapshot screen state when entering URL mode

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Previously, we automatically exited URL mode whenever we received data
on the PTY. This was done since we don’t know _what_ has changed on
the screen, and we don’t want to display misleading jump labels.

However, this becomes a problem in curses-like applications that
periodically updates part of the screen. For example, a statusbar with
a clock.

This patch changes this behavior; instead of cancelling URL mode when
receiving PTY data, we snapshot the grid when entering URL mode.

When *rendering*, we use the snapshot:ed grid, while PTY updates
modify the “real” grid.

Snapshot:ing the grid means taking a full/deep copy of the current
grid, including sixel images etc.

Finally, it isn’t necessary to “damage” the entire view
when *entering* URL mode, since we’re at that point the renderer is in
sync with the grid. But we *do* need to damage the entire view when
exiting URL mode, since the grid changes on the “real” grid hasn’t
been tracked by the renderer.
This commit is contained in:
Daniel Eklöf 2021-02-22 10:22:41 +01:00
parent ae3ec52507
commit 54b5ae95c1
No known key found for this signature in database
GPG key ID: 5BBD4992C116573F
4 changed files with 31 additions and 3 deletions
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16
render.c
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@ -2675,6 +2675,12 @@ frame_callback(void *data, struct wl_callback *wl_callback, uint32_t callback_da
term->render.pending.title = false;
term->render.pending.urls = false;
struct grid *original_grid = term->grid;
if (urls_mode_is_active(term)) {
xassert(term->url_grid_snapshot != NULL);
term->grid = term->url_grid_snapshot;
}
if (csd && term->window->use_csd == CSD_YES) {
quirk_weston_csd_on(term);
render_csd(term);
@ -2697,6 +2703,8 @@ frame_callback(void *data, struct wl_callback *wl_callback, uint32_t callback_da
if (it->item.kbd_focus == term)
ime_update_cursor_rect(&it->item, term);
}
term->grid = original_grid;
}
static void
@ -3127,6 +3135,12 @@ fdm_hook_refresh_pending_terminals(struct fdm *fdm, void *data)
term->render.refresh.urls = false;
if (term->window->frame_callback == NULL) {
struct grid *original_grid = term->grid;
if (urls_mode_is_active(term)) {
xassert(term->url_grid_snapshot != NULL);
term->grid = term->url_grid_snapshot;
}
if (csd && term->window->use_csd == CSD_YES) {
quirk_weston_csd_on(term);
render_csd(term);
@ -3145,6 +3159,8 @@ fdm_hook_refresh_pending_terminals(struct fdm *fdm, void *data)
if (it->item.kbd_focus == term)
ime_update_cursor_rect(&it->item, term);
}
term->grid = original_grid;
} else {
/* Tells the frame callback to render again */
term->render.pending.grid |= grid;