labwc/src/view-impl-common.c
John Lindgren 02df0a15d7 foreign-toplevel: simplify and fully separate ext-foreign/wlr-foreign
Currently, the dependencies between foreign-toplevel[-internal],
ext-foreign, and wlr-foreign are cyclical and a bit complex.

I suggest we reorganize it into a simpler hierarchy:

  foreign-toplevel/
    -> foreign.c/h
      -> (depends on) ext-foreign.c/h
      -> (depends on) wlr-foreign.c/h

The refactored code is smaller and (IMO) easier to follow.

In detail:

- Add include/foreign-toplevel folder mirroring src/foreign-toplevel
- Split foreign-toplevel-internal.h to ext-foreign.h and wlr-foreign.h
- Eliminate ext-/wlr-foreign.c -> foreign.c reverse dependencies
  (including internal signals and foreign_request* functions)
- Make struct foreign_toplevel private to foreign.c

Lightly tested with qmpanel (which uses wlr-foreign-toplevel).

v2: reorder foreign-toplevel internal API funcs
2025-08-07 23:27:04 -04:00

114 lines
3.4 KiB
C

// SPDX-License-Identifier: GPL-2.0-only
/* view-impl-common.c: common code for shell view->impl functions */
#include "view-impl-common.h"
#include <strings.h>
#include "foreign-toplevel/foreign.h"
#include "labwc.h"
#include "view.h"
#include "window-rules.h"
void
view_impl_map(struct view *view)
{
desktop_focus_view(view, /*raise*/ true);
view_update_title(view);
view_update_app_id(view);
if (!view->been_mapped) {
window_rules_apply(view, LAB_WINDOW_RULE_EVENT_ON_FIRST_MAP);
}
/*
* It's tempting to just never create the foreign-toplevel handle in the
* map handlers, but the app_id/title might not have been set at that
* point, so it's safer to process the property here
*/
enum property ret = window_rules_get_property(view, "skipTaskbar");
if (ret == LAB_PROP_TRUE) {
if (view->foreign_toplevel) {
foreign_toplevel_destroy(view->foreign_toplevel);
view->foreign_toplevel = NULL;
}
}
/*
* Some clients (e.g. Steam's Big Picture Mode window) request
* fullscreen before mapping.
*/
desktop_update_top_layer_visibility(view->server);
wlr_log(WLR_DEBUG, "[map] identifier=%s, title=%s",
view_get_string_prop(view, "app_id"),
view_get_string_prop(view, "title"));
}
void
view_impl_unmap(struct view *view)
{
struct server *server = view->server;
/*
* When exiting an xwayland application with multiple views
* mapped, a race condition can occur: after the topmost view
* is unmapped, the next view under it is offered focus, but is
* also unmapped before accepting focus (so server->active_view
* remains NULL). To avoid being left with no active view at
* all, check for that case also.
*/
if (view == server->active_view || !server->active_view) {
desktop_focus_topmost_view(server);
}
}
static bool
resizing_edge(struct view *view, uint32_t edge)
{
struct server *server = view->server;
return server->input_mode == LAB_INPUT_STATE_RESIZE
&& server->grabbed_view == view
&& (server->resize_edges & edge);
}
void
view_impl_apply_geometry(struct view *view, int w, int h)
{
struct wlr_box *current = &view->current;
struct wlr_box *pending = &view->pending;
struct wlr_box old = *current;
/*
* Anchor right edge if resizing via left edge.
*
* Note that answering the question "are we resizing?" is a bit
* tricky. The most obvious method is to look at the server
* flags; but that method will not account for any late commits
* that occur after the mouse button is released, as the client
* catches up with pending configure requests. So as a fallback,
* we resort to a geometry-based heuristic -- also not 100%
* reliable on its own. The combination of the two methods
* should catch 99% of resize cases that we care about.
*/
bool resizing_left_edge = resizing_edge(view, WLR_EDGE_LEFT);
if (resizing_left_edge || (current->x != pending->x
&& current->x + current->width ==
pending->x + pending->width)) {
current->x = pending->x + pending->width - w;
} else {
current->x = pending->x;
}
/* Anchor bottom edge if resizing via top edge */
bool resizing_top_edge = resizing_edge(view, WLR_EDGE_TOP);
if (resizing_top_edge || (current->y != pending->y
&& current->y + current->height ==
pending->y + pending->height)) {
current->y = pending->y + pending->height - h;
} else {
current->y = pending->y;
}
current->width = w;
current->height = h;
if (!wlr_box_equal(current, &old)) {
view_moved(view);
}
}