river/river/command/mod_master_factor.zig
Isaac Freund f80992e329
meta: make copyright headers more maintainable
- list all files as copyright "The River Developers"
- add an AUTHORS file to acknowledge contributors
2020-11-11 20:33:43 +01:00

42 lines
1.5 KiB
Zig

// 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 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,
out: *?[]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;
output.arrangeViews();
output.root.startTransaction();
}
}