138 lines
4.2 KiB
Zig
138 lines
4.2 KiB
Zig
// This file is part of river, a dynamic tiling wayland compositor.
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//
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// Copyright 2022 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, version 3.
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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 InputDevice = @This();
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const std = @import("std");
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const mem = std.mem;
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const ascii = std.ascii;
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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 Keyboard = @import("Keyboard.zig");
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const Switch = @import("Switch.zig");
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const log = std.log.scoped(.input_manager);
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seat: *Seat,
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wlr_device: *wlr.InputDevice,
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destroy: wl.Listener(*wlr.InputDevice) = wl.Listener(*wlr.InputDevice).init(handleDestroy),
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/// Careful: The identifier is not unique! A physical input device may have
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/// multiple logical input devices with the exact same vendor id, product id
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/// and name. However identifiers of InputConfigs are unique.
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identifier: []const u8,
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/// InputManager.devices
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link: wl.list.Link,
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pub fn init(device: *InputDevice, seat: *Seat, wlr_device: *wlr.InputDevice) !void {
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const device_type: []const u8 = switch (wlr_device.type) {
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.switch_device => "switch",
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else => @tagName(wlr_device.type),
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};
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const identifier = try std.fmt.allocPrint(
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util.gpa,
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"{s}-{}-{}-{s}",
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.{
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device_type,
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wlr_device.vendor,
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wlr_device.product,
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mem.trim(u8, mem.span(wlr_device.name), &ascii.spaces),
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},
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);
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errdefer util.gpa.free(identifier);
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for (identifier) |*char| {
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if (!ascii.isGraph(char.*)) {
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char.* = '_';
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}
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}
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device.* = .{
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.seat = seat,
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.wlr_device = wlr_device,
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.identifier = identifier,
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.link = undefined,
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};
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wlr_device.events.destroy.add(&device.destroy);
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// Keyboard groups are implemented as "virtual" input devices which we don't want to expose
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// in riverctl list-inputs as they can't be configured.
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if (!isKeyboardGroup(wlr_device)) {
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// Apply any matching input device configuration.
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for (server.input_manager.configs.items) |*input_config| {
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if (mem.eql(u8, input_config.identifier, identifier)) {
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input_config.apply(device);
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}
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}
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server.input_manager.devices.append(device);
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seat.updateCapabilities();
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}
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log.debug("new input device: {s}", .{identifier});
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}
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pub fn deinit(device: *InputDevice) void {
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device.destroy.link.remove();
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util.gpa.free(device.identifier);
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if (!isKeyboardGroup(device.wlr_device)) {
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device.link.remove();
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device.seat.updateCapabilities();
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}
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device.* = undefined;
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}
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fn isKeyboardGroup(wlr_device: *wlr.InputDevice) bool {
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return wlr_device.type == .keyboard and
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wlr.KeyboardGroup.fromKeyboard(wlr_device.toKeyboard()) != null;
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}
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fn handleDestroy(listener: *wl.Listener(*wlr.InputDevice), _: *wlr.InputDevice) void {
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const device = @fieldParentPtr(InputDevice, "destroy", listener);
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log.debug("removed input device: {s}", .{device.identifier});
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switch (device.wlr_device.type) {
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.keyboard => {
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const keyboard = @fieldParentPtr(Keyboard, "device", device);
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keyboard.deinit();
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util.gpa.destroy(keyboard);
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},
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.pointer, .touch => {
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device.deinit();
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util.gpa.destroy(device);
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},
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.switch_device => {
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const switch_device = @fieldParentPtr(Switch, "device", device);
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switch_device.deinit();
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util.gpa.destroy(switch_device);
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},
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.tablet_tool, .tablet_pad => unreachable,
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}
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}
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