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// This file is part of river, a dynamic tiling wayland compositor.
//
// Copyright 2020 Isaac Freund
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
const Self = @This();
const std = @import("std");
const c = @import("c.zig");
const Box = @import("Box.zig");
const Output = @import("Output.zig");
/// The output this popup is displayed on.
output: *Output,
/// Box of the parent of this popup tree. Needed to unconstrain child popups.
parent_box: *const Box,
/// The corresponding wlroots object
wlr_xdg_popup: *c.wlr_xdg_popup,
listen_destroy: c.wl_listener,
listen_new_popup: c.wl_listener,
pub fn init(
self: *Self,
output: *Output,
parent_box: *const Box,
wlr_xdg_popup: *c.wlr_xdg_popup,
) void {
self.output = output;
self.parent_box = parent_box;
self.wlr_xdg_popup = wlr_xdg_popup;
// The output box relative to the parent of the popup
var box = c.wlr_output_layout_get_box(output.root.wlr_output_layout, output.wlr_output).*;
box.x -= parent_box.x;
box.y -= parent_box.y;
c.wlr_xdg_popup_unconstrain_from_box(wlr_xdg_popup, &box);
// Setup listeners
self.listen_destroy.notify = handleDestroy;
c.wl_signal_add(&wlr_xdg_popup.base.*.events.destroy, &self.listen_destroy);
self.listen_new_popup.notify = handleNewPopup;
c.wl_signal_add(&wlr_xdg_popup.base.*.events.new_popup, &self.listen_new_popup);
}
fn handleDestroy(listener: ?*c.wl_listener, data: ?*c_void) callconv(.C) void {
const self = @fieldParentPtr(Self, "listen_destroy", listener.?);
const allocator = self.output.root.server.allocator;
c.wl_list_remove(&self.listen_destroy.link);
c.wl_list_remove(&self.listen_new_popup.link);
allocator.destroy(self);
}
/// Called when a new xdg popup is requested by the client
fn handleNewPopup(listener: ?*c.wl_listener, data: ?*c_void) callconv(.C) void {
const self = @fieldParentPtr(Self, "listen_new_popup", listener.?);
const wlr_xdg_popup = @ptrCast(*c.wlr_xdg_popup, @alignCast(@alignOf(*c.wlr_xdg_popup), data));
const allocator = self.output.root.server.allocator;
// This will free itself on destroy
var xdg_popup = allocator.create(Self) catch unreachable;
xdg_popup.init(self.output, self.parent_box, wlr_xdg_popup);
}
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