c5de1641dc
river is not a library and passing a general purpose allocators around everywhere does not make sense and leads to ugly code. This does not prevent us from using local arenas if they are fitting.
82 lines
2.7 KiB
Zig
82 lines
2.7 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,
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listen_new_popup: c.wl_listener,
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pub fn init(
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self: *Self,
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output: *Output,
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parent_box: *const Box,
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wlr_xdg_popup: *c.wlr_xdg_popup,
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) void {
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self.output = output;
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self.parent_box = parent_box;
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self.wlr_xdg_popup = wlr_xdg_popup;
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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.allocator.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.allocator.create(Self) catch unreachable;
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xdg_popup.init(self.output, self.parent_box, wlr_xdg_popup);
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}
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