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backend-vnc: Implement output resizing

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Let VNC clients resize the VNC output.

Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
This commit is contained in:
Philipp Zabel 2022-11-06 16:34:06 +01:00
parent 8895b15f3d
commit 690beab475
1 changed files with 51 additions and 0 deletions
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51
libweston/backend-vnc/vnc.c
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@ -359,6 +359,56 @@ vnc_handle_key_code_event(struct nvnc_client *client, uint32_t key,
notify_key(peer->seat, &time, key, state, STATE_UPDATE_AUTOMATIC);
}
static void
vnc_log_desktop_layout(struct vnc_backend *backend,
const struct nvnc_desktop_layout *layout)
{
uint8_t num_displays = nvnc_desktop_layout_get_display_count(layout);
char timestr[128];
if (!weston_log_scope_is_enabled(backend->debug))
return;
weston_log_scope_timestamp(backend->debug, timestr, sizeof timestr);
weston_log_scope_printf(backend->debug,
"%s desktop size event, %u displays:",
timestr, num_displays);
for (int i = 0; i < num_displays; i++) {
uint16_t x = nvnc_desktop_layout_get_display_x_pos(layout, i);
uint16_t y = nvnc_desktop_layout_get_display_y_pos(layout, i);
uint16_t width = nvnc_desktop_layout_get_display_width(layout, i);
uint16_t height = nvnc_desktop_layout_get_display_height(layout, i);
struct nvnc_display *display = nvnc_desktop_layout_get_display(layout, i);
weston_log_scope_printf(backend->debug, " %ux%u(%u,%u)%s",
width, height, x, y,
display ? "" : "*");
}
weston_log_scope_printf(backend->debug, "\n");
}
static bool
vnc_handle_desktop_layout_event(struct nvnc_client *client,
const struct nvnc_desktop_layout *layout)
{
struct vnc_peer *peer = nvnc_get_userdata(client);
struct vnc_output *output = peer->backend->output;
struct weston_mode new_mode;
uint16_t width = nvnc_desktop_layout_get_width(layout);
uint16_t height = nvnc_desktop_layout_get_height(layout);
vnc_log_desktop_layout(peer->backend, layout);
new_mode.width = width;
new_mode.height = height;
new_mode.refresh = peer->backend->vnc_monitor_refresh_rate;
weston_output_mode_set_native(&output->base, &new_mode, 1);
return false;
}
static void
vnc_pointer_event(struct nvnc_client *client, uint16_t x, uint16_t y,
enum nvnc_button_mask button_mask)
@ -1227,6 +1277,7 @@ vnc_backend_create(struct weston_compositor *compositor,
nvnc_set_pointer_fn(backend->server, vnc_pointer_event);
nvnc_set_key_fn(backend->server, vnc_handle_key_event);
nvnc_set_key_code_fn(backend->server, vnc_handle_key_code_event);
nvnc_set_desktop_layout_fn(backend->server, vnc_handle_desktop_layout_event);
nvnc_set_userdata(backend->server, backend, NULL);
nvnc_set_name(backend->server, "Weston VNC backend");