river/river/command/mod_master_factor.zig
2020-06-01 15:56:50 +02:00

46 lines
1.6 KiB
Zig

// This file is part of river, a dynamic tiling wayland compositor.
//
// Copyright 2020 Isaac Freund
//
// 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 = @import("../c.zig");
const Error = @import("../command.zig").Error;
const Seat = @import("../Seat.zig");
/// Modify the percent of the width of the screen that the master views occupy.
pub fn modMasterFactor(
allocator: *std.mem.Allocator,
seat: *Seat,
args: []const []const u8,
failure_message: *[]const u8,
) Error!void {
if (args.len < 2) return Error.NotEnoughArguments;
if (args.len > 2) return Error.TooManyArguments;
const delta = try std.fmt.parseFloat(f64, args[1]);
const output = seat.focused_output;
const new_master_factor = std.math.min(
std.math.max(output.master_factor + delta, 0.05),
0.95,
);
if (new_master_factor != output.master_factor) {
output.master_factor = new_master_factor;
seat.input_manager.server.root.arrange();
}
}