103 lines
4.2 KiB
Zig
103 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 2020 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 std = @import("std");
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const os = std.os;
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const mem = std.mem;
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const fmt = std.fmt;
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const wayland = @import("wayland");
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const wl = wayland.client.wl;
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const zriver = wayland.client.zriver;
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const SetupContext = struct {
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options_manager: ?*zriver.OptionsManagerV1 = null,
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outputs: std.ArrayList(*wl.Output) = std.ArrayList(*wl.Output).init(std.heap.c_allocator),
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};
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const ValueType = enum {
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int,
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uint,
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fixed,
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string,
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};
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/// Disclaimer, the output handling implemented here is by no means robust. A
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/// proper client should likely use xdg-output to identify outputs by name.
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///
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/// Usage: ./options <key> output_num|NULL [<value_type> <value>]
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/// Examples:
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/// ./options foo
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/// ./options foo NULL uint 42
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/// ./options foo 1 string ziggy
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pub fn main() !void {
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const display = try wl.Display.connect(null);
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const registry = try display.getRegistry();
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var context = SetupContext{};
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registry.setListener(*SetupContext, registryListener, &context) catch unreachable;
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_ = try display.roundtrip();
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const options_manager = context.options_manager orelse return error.RiverOptionsManagerNotAdvertised;
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const key = os.argv[1];
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const output = if (mem.eql(u8, "NULL", mem.span(os.argv[2])))
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null
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else
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context.outputs.items[fmt.parseInt(u32, mem.span(os.argv[2]), 10) catch return error.InvalidOutput];
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const handle = try options_manager.getOptionHandle(key, output);
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handle.setListener([*:0]u8, optionListener, key) catch unreachable;
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if (os.argv.len > 3) {
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const value_type = std.meta.stringToEnum(ValueType, mem.span(os.argv[3])) orelse return error.InvalidType;
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switch (value_type) {
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.int => handle.setIntValue(fmt.parseInt(i32, mem.span(os.argv[4]), 10) catch return error.InvalidInt),
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.uint => handle.setUintValue(fmt.parseInt(u32, mem.span(os.argv[4]), 10) catch return error.InvalidUint),
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.fixed => handle.setFixedValue(wl.Fixed.fromDouble(fmt.parseFloat(f64, mem.span(os.argv[4])) catch return error.InvalidFixed)),
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.string => handle.setStringValue(os.argv[4]),
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}
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}
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// Loop forever, listening for new events.
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while (true) _ = try display.dispatch();
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}
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fn registryListener(registry: *wl.Registry, event: wl.Registry.Event, context: *SetupContext) void {
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switch (event) {
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.global => |global| {
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if (std.cstr.cmp(global.interface, zriver.OptionsManagerV1.getInterface().name) == 0) {
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context.options_manager = registry.bind(global.name, zriver.OptionsManagerV1, 1) catch return;
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} else if (std.cstr.cmp(global.interface, wl.Output.getInterface().name) == 0) {
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const output = registry.bind(global.name, wl.Output, 1) catch return;
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context.outputs.append(output) catch @panic("out of memory");
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}
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},
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.global_remove => {},
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}
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}
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fn optionListener(handle: *zriver.OptionHandleV1, event: zriver.OptionHandleV1.Event, key: [*:0]const u8) void {
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switch (event) {
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.unset => std.debug.print("option '{}' unset\n", .{key}),
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.int_value => |ev| std.debug.print("option '{}' of type int has value {}\n", .{ key, ev.value }),
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.uint_value => |ev| std.debug.print("option '{}' of type uint has value {}\n", .{ key, ev.value }),
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.fixed_value => |ev| std.debug.print("option '{}' of type fixed has value {}\n", .{ key, ev.value.toDouble() }),
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.string_value => |ev| std.debug.print("option '{}' of type string has value {}\n", .{ key, ev.value }),
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}
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}
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