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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 os = std.os;
const mem = std.mem;
const fmt = std.fmt;
const wayland = @import("wayland");
const wl = wayland.client.wl;
const zriver = wayland.client.zriver;
const SetupContext = struct {
options_manager: ?*zriver.OptionsManagerV1 = null,
outputs: std.ArrayList(*wl.Output) = std.ArrayList(*wl.Output).init(std.heap.c_allocator),
};
const ValueType = enum {
int,
uint,
fixed,
string,
};
/// Disclaimer, the output handling implemented here is by no means robust. A
/// proper client should likely use xdg-output to identify outputs by name.
///
/// Usage: ./options <key> output_num|NULL [<value_type> <value>]
/// Examples:
/// ./options foo
/// ./options foo NULL uint 42
/// ./options foo 1 string ziggy
pub fn main() !void {
const display = try wl.Display.connect(null);
const registry = try display.getRegistry();
var context = SetupContext{};
registry.setListener(*SetupContext, registryListener, &context) catch unreachable;
_ = try display.roundtrip();
const options_manager = context.options_manager orelse return error.RiverOptionsManagerNotAdvertised;
const key = os.argv[1];
const output = if (mem.eql(u8, "NULL", mem.span(os.argv[2])))
null
else
context.outputs.items[fmt.parseInt(u32, mem.span(os.argv[2]), 10) catch return error.InvalidOutput];
const handle = try options_manager.getOptionHandle(key, output);
handle.setListener([*:0]u8, optionListener, key) catch unreachable;
if (os.argv.len > 3) {
const value_type = std.meta.stringToEnum(ValueType, mem.span(os.argv[3])) orelse return error.InvalidType;
switch (value_type) {
.int => handle.setIntValue(fmt.parseInt(i32, mem.span(os.argv[4]), 10) catch return error.InvalidInt),
.uint => handle.setUintValue(fmt.parseInt(u32, mem.span(os.argv[4]), 10) catch return error.InvalidUint),
.fixed => handle.setFixedValue(wl.Fixed.fromDouble(fmt.parseFloat(f64, mem.span(os.argv[4])) catch return error.InvalidFixed)),
.string => handle.setStringValue(os.argv[4]),
}
}
// Loop forever, listening for new events.
while (true) _ = try display.dispatch();
}
fn registryListener(registry: *wl.Registry, event: wl.Registry.Event, context: *SetupContext) void {
switch (event) {
.global => |global| {
if (std.cstr.cmp(global.interface, zriver.OptionsManagerV1.getInterface().name) == 0) {
context.options_manager = registry.bind(global.name, zriver.OptionsManagerV1, 1) catch return;
} else if (std.cstr.cmp(global.interface, wl.Output.getInterface().name) == 0) {
const output = registry.bind(global.name, wl.Output, 1) catch return;
context.outputs.append(output) catch @panic("out of memory");
}
},
.global_remove => {},
}
}
fn optionListener(handle: *zriver.OptionHandleV1, event: zriver.OptionHandleV1.Event, key: [*:0]const u8) void {
switch (event) {
.unset => std.debug.print("option '{}' unset\n", .{key}),
.int_value => |ev| std.debug.print("option '{}' of type int has value {}\n", .{ key, ev.value }),
.uint_value => |ev| std.debug.print("option '{}' of type uint has value {}\n", .{ key, ev.value }),
.fixed_value => |ev| std.debug.print("option '{}' of type fixed has value {}\n", .{ key, ev.value.toDouble() }),
.string_value => |ev| std.debug.print("option '{}' of type string has value {}\n", .{ key, ev.value }),
}
}
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