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// This file is part of river, a dynamic tiling wayland compositor.
//
// Copyright 2020 The River Developers
//
// 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 std = @import("std");
const c = @cImport({
@cInclude("wayland-client.h");
@cInclude("river-status-unstable-v1-client-protocol.h");
});
const wl_registry_listener = c.wl_registry_listener{
.global = handleGlobal,
.global_remove = handleGlobalRemove,
};
const river_output_status_listener = c.zriver_output_status_v1_listener{
.focused_tags = handleFocusedTags,
.view_tags = handleViewTags,
};
const river_seat_status_listener = c.zriver_seat_status_v1_listener{
.focused_output = handleFocusedOutput,
.unfocused_output = handleUnfocusedOutput,
.focused_view = handleFocusedView,
};
var river_status_manager: ?*c.zriver_status_manager_v1 = null;
var outputs = std.ArrayList(*c.wl_output).init(std.heap.c_allocator);
var seats = std.ArrayList(*c.wl_seat).init(std.heap.c_allocator);
pub fn main() !void {
const wl_display = c.wl_display_connect(null) orelse return error.CantConnectToDisplay;
const wl_registry = c.wl_display_get_registry(wl_display);
if (c.wl_registry_add_listener(wl_registry, &wl_registry_listener, null) < 0)
return error.FailedToAddListener;
if (c.wl_display_roundtrip(wl_display) < 0) return error.RoundtripFailed;
if (river_status_manager == null) return error.RiverStatusManagerNotAdvertised;
for (outputs.items) |wl_output| createOutputStatus(wl_output);
for (seats.items) |wl_seat| createSeatStatus(wl_seat);
outputs.deinit();
seats.deinit();
// Loop forever, listening for new events.
while (true) if (c.wl_display_dispatch(wl_display) < 0) return error.DispatchFailed;
}
fn handleGlobal(
data: ?*c_void,
wl_registry: ?*c.wl_registry,
name: u32,
interface: ?[*:0]const u8,
version: u32,
) callconv(.C) void {
// Global advertisement order is not defined, so save any outputs or seats
// advertised before the river_status_manager.
if (std.cstr.cmp(interface.?, @ptrCast([*:0]const u8, c.zriver_status_manager_v1_interface.name.?)) == 0) {
river_status_manager = @ptrCast(
*c.zriver_status_manager_v1,
c.wl_registry_bind(wl_registry, name, &c.zriver_status_manager_v1_interface, version),
);
} else if (std.cstr.cmp(interface.?, @ptrCast([*:0]const u8, c.wl_output_interface.name.?)) == 0) {
const wl_output = @ptrCast(
*c.wl_output,
c.wl_registry_bind(wl_registry, name, &c.wl_output_interface, version),
);
outputs.append(wl_output) catch @panic("out of memory");
} else if (std.cstr.cmp(interface.?, @ptrCast([*:0]const u8, c.wl_seat_interface.name.?)) == 0) {
const wl_seat = @ptrCast(
*c.wl_seat,
c.wl_registry_bind(wl_registry, name, &c.wl_seat_interface, version),
);
seats.append(wl_seat) catch @panic("out of memory");
}
}
fn createOutputStatus(wl_output: *c.wl_output) void {
const river_output_status = c.zriver_status_manager_v1_get_river_output_status(
river_status_manager.?,
wl_output,
);
_ = c.zriver_output_status_v1_add_listener(
river_output_status,
&river_output_status_listener,
null,
);
}
fn createSeatStatus(wl_seat: *c.wl_seat) void {
const river_seat_status = c.zriver_status_manager_v1_get_river_seat_status(
river_status_manager.?,
wl_seat,
);
_ = c.zriver_seat_status_v1_add_listener(river_seat_status, &river_seat_status_listener, null);
}
fn handleGlobalRemove(data: ?*c_void, wl_registry: ?*c.wl_registry, name: u32) callconv(.C) void {
// Ignore the event
}
fn handleFocusedTags(
data: ?*c_void,
output_status: ?*c.zriver_output_status_v1,
tags: u32,
) callconv(.C) void {
std.debug.warn("Focused tags: {b:0>10}\n", .{tags});
}
fn handleViewTags(
data: ?*c_void,
output_status: ?*c.zriver_output_status_v1,
tags: ?*c.wl_array,
) callconv(.C) void {
std.debug.warn("View tags:\n", .{});
var offset: usize = 0;
while (offset < tags.?.size) : (offset += @sizeOf(u32)) {
const ptr = @ptrCast([*]u8, tags.?.data) + offset;
std.debug.warn("{b:0>10}\n", .{std.mem.bytesToValue(u32, ptr[0..4])});
}
}
fn handleFocusedOutput(
data: ?*c_void,
seat_status: ?*c.zriver_seat_status_v1,
wl_output: ?*c.wl_output,
) callconv(.C) void {
std.debug.warn("Output id {} focused\n", .{c.wl_proxy_get_id(@ptrCast(*c.wl_proxy, wl_output))});
}
fn handleUnfocusedOutput(
data: ?*c_void,
seat_status: ?*c.zriver_seat_status_v1,
wl_output: ?*c.wl_output,
) callconv(.C) void {
std.debug.warn("Output id {} unfocused\n", .{c.wl_proxy_get_id(@ptrCast(*c.wl_proxy, wl_output))});
}
fn handleFocusedView(
data: ?*c_void,
seat_status: ?*c.zriver_seat_status_v1,
title: ?[*:0]const u8,
) callconv(.C) void {
std.debug.warn("Focused view title: {}\n", .{title.?});
}
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