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