863f8156f7
When an xdg toplevel, layer surface, etc is destroyed, it is not guaranteed that all the children in the surface tree have already been destroyed. If there are still children around, destroying the root of the tree would leave dangling pointers. To fix this, destroy all children when destroying any node in the tree.
96 lines
3.7 KiB
Zig
96 lines
3.7 KiB
Zig
// This file is part of river, a dynamic tiling wayland compositor.
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//
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// Copyright 2020-2021 The River Developers
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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 DragIcon = @This();
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const std = @import("std");
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const wlr = @import("wlroots");
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const wl = @import("wayland").server.wl;
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const server = &@import("main.zig").server;
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const util = @import("util.zig");
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const Seat = @import("Seat.zig");
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const Subsurface = @import("Subsurface.zig");
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seat: *Seat,
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wlr_drag_icon: *wlr.Drag.Icon,
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// Always active
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destroy: wl.Listener(*wlr.Drag.Icon) = wl.Listener(*wlr.Drag.Icon).init(handleDestroy),
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map: wl.Listener(*wlr.Drag.Icon) = wl.Listener(*wlr.Drag.Icon).init(handleMap),
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unmap: wl.Listener(*wlr.Drag.Icon) = wl.Listener(*wlr.Drag.Icon).init(handleUnmap),
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new_subsurface: wl.Listener(*wlr.Subsurface) = wl.Listener(*wlr.Subsurface).init(handleNewSubsurface),
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// Only active while mapped
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commit: wl.Listener(*wlr.Surface) = wl.Listener(*wlr.Surface).init(handleCommit),
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pub fn init(drag_icon: *DragIcon, seat: *Seat, wlr_drag_icon: *wlr.Drag.Icon) void {
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drag_icon.* = .{ .seat = seat, .wlr_drag_icon = wlr_drag_icon };
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wlr_drag_icon.events.destroy.add(&drag_icon.destroy);
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wlr_drag_icon.events.map.add(&drag_icon.map);
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wlr_drag_icon.events.unmap.add(&drag_icon.unmap);
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wlr_drag_icon.surface.events.new_subsurface.add(&drag_icon.new_subsurface);
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Subsurface.handleExisting(wlr_drag_icon.surface, .{ .drag_icon = drag_icon });
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}
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fn handleDestroy(listener: *wl.Listener(*wlr.Drag.Icon), wlr_drag_icon: *wlr.Drag.Icon) void {
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const drag_icon = @fieldParentPtr(DragIcon, "destroy", listener);
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const node = @fieldParentPtr(std.SinglyLinkedList(DragIcon).Node, "data", drag_icon);
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server.root.drag_icons.remove(node);
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drag_icon.destroy.link.remove();
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drag_icon.map.link.remove();
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drag_icon.unmap.link.remove();
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drag_icon.new_subsurface.link.remove();
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Subsurface.destroySubsurfaces(wlr_drag_icon.surface);
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util.gpa.destroy(node);
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}
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fn handleMap(listener: *wl.Listener(*wlr.Drag.Icon), wlr_drag_icon: *wlr.Drag.Icon) void {
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const drag_icon = @fieldParentPtr(DragIcon, "map", listener);
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wlr_drag_icon.surface.events.commit.add(&drag_icon.commit);
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var it = server.root.outputs.first;
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while (it) |node| : (it = node.next) node.data.damage.addWhole();
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}
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fn handleUnmap(listener: *wl.Listener(*wlr.Drag.Icon), wlr_drag_icon: *wlr.Drag.Icon) void {
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const drag_icon = @fieldParentPtr(DragIcon, "unmap", listener);
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drag_icon.commit.link.remove();
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var it = server.root.outputs.first;
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while (it) |node| : (it = node.next) node.data.damage.addWhole();
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}
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fn handleCommit(listener: *wl.Listener(*wlr.Surface), surface: *wlr.Surface) void {
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const drag_icon = @fieldParentPtr(DragIcon, "commit", listener);
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var it = server.root.outputs.first;
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while (it) |node| : (it = node.next) node.data.damage.addWhole();
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}
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fn handleNewSubsurface(listener: *wl.Listener(*wlr.Subsurface), wlr_subsurface: *wlr.Subsurface) void {
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const drag_icon = @fieldParentPtr(DragIcon, "new_subsurface", listener);
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Subsurface.create(wlr_subsurface, .{ .drag_icon = drag_icon });
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}
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