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137 lines
4 KiB
C
137 lines
4 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (C) 2020 the sway authors
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*
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* This file is only needed in support of
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* - unconstraining XDG popups
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* - keeping non-layer-shell xdg-popups outside the layers.c code
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*/
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#include "common/mem.h"
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#include "labwc.h"
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#include "node.h"
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#include "view.h"
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struct xdg_popup {
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struct view *parent_view;
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struct wlr_xdg_popup *wlr_popup;
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struct wl_listener commit;
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struct wl_listener destroy;
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struct wl_listener new_popup;
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struct wl_listener reposition;
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};
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static void
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popup_unconstrain(struct xdg_popup *popup)
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{
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struct view *view = popup->parent_view;
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struct server *server = view->server;
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struct wlr_box *popup_box = &popup->wlr_popup->current.geometry;
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struct output *output = output_nearest_to(server,
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view->current.x + popup_box->x,
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view->current.y + popup_box->y);
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struct wlr_box usable = output_usable_area_in_layout_coords(output);
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struct wlr_box output_toplevel_box = {
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.x = usable.x - view->current.x,
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.y = usable.y - view->current.y,
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.width = usable.width,
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.height = usable.height,
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};
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wlr_xdg_popup_unconstrain_from_box(popup->wlr_popup, &output_toplevel_box);
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}
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static void
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handle_xdg_popup_destroy(struct wl_listener *listener, void *data)
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{
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struct xdg_popup *popup = wl_container_of(listener, popup, destroy);
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wl_list_remove(&popup->destroy.link);
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wl_list_remove(&popup->new_popup.link);
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wl_list_remove(&popup->reposition.link);
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/* Usually already removed unless there was no commit at all */
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if (popup->commit.notify) {
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wl_list_remove(&popup->commit.link);
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}
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free(popup);
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}
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static void
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handle_xdg_popup_commit(struct wl_listener *listener, void *data)
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{
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struct xdg_popup *popup = wl_container_of(listener, popup, commit);
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if (popup->wlr_popup->base->initial_commit) {
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popup_unconstrain(popup);
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/* Prevent getting called over and over again */
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wl_list_remove(&popup->commit.link);
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popup->commit.notify = NULL;
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}
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}
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static void
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handle_xdg_popup_reposition(struct wl_listener *listener, void *data)
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{
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struct xdg_popup *popup = wl_container_of(listener, popup, reposition);
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popup_unconstrain(popup);
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}
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static void
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popup_handle_new_xdg_popup(struct wl_listener *listener, void *data)
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{
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struct xdg_popup *popup = wl_container_of(listener, popup, new_popup);
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struct wlr_xdg_popup *wlr_popup = data;
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xdg_popup_create(popup->parent_view, wlr_popup);
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}
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void
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xdg_popup_create(struct view *view, struct wlr_xdg_popup *wlr_popup)
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{
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struct wlr_xdg_surface *parent =
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wlr_xdg_surface_try_from_wlr_surface(wlr_popup->parent);
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if (!parent) {
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wlr_log(WLR_ERROR, "parent is not a valid XDG surface");
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return;
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}
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struct xdg_popup *popup = znew(*popup);
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popup->parent_view = view;
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popup->wlr_popup = wlr_popup;
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popup->destroy.notify = handle_xdg_popup_destroy;
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wl_signal_add(&wlr_popup->events.destroy, &popup->destroy);
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popup->new_popup.notify = popup_handle_new_xdg_popup;
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wl_signal_add(&wlr_popup->base->events.new_popup, &popup->new_popup);
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popup->commit.notify = handle_xdg_popup_commit;
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wl_signal_add(&wlr_popup->base->surface->events.commit, &popup->commit);
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popup->reposition.notify = handle_xdg_popup_reposition;
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wl_signal_add(&wlr_popup->events.reposition, &popup->reposition);
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/*
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* We must add xdg popups to the scene graph so they get rendered. The
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* wlroots scene graph provides a helper for this, but to use it we must
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* provide the proper parent scene node of the xdg popup. To enable
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* this, we always set the user data field of xdg_surfaces to the
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* corresponding scene node.
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*
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* xdg-popups live in server->xdg_popup_tree so that they can be
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* rendered above always-on-top windows
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*/
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struct wlr_scene_tree *parent_tree = NULL;
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if (parent->role == WLR_XDG_SURFACE_ROLE_POPUP) {
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parent_tree = parent->surface->data;
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} else {
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parent_tree = view->server->xdg_popup_tree;
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wlr_scene_node_set_position(&view->server->xdg_popup_tree->node,
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view->current.x, view->current.y);
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}
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wlr_popup->base->surface->data =
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wlr_scene_xdg_surface_create(parent_tree, wlr_popup->base);
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node_descriptor_create(wlr_popup->base->surface->data,
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LAB_NODE_DESC_XDG_POPUP, view);
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}
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