86 lines
2.8 KiB
Zig
86 lines
2.8 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 server = &@import("../main.zig").server;
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const Error = @import("../command.zig").Error;
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const Direction = @import("../command.zig").Direction;
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const Seat = @import("../Seat.zig");
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const View = @import("../View.zig");
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const ViewStack = @import("../view_stack.zig").ViewStack;
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/// Swap the currently focused view with either the view higher or lower in the visible stack
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pub fn swap(
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allocator: *std.mem.Allocator,
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seat: *Seat,
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args: []const []const u8,
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out: *?[]const u8,
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) Error!void {
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if (args.len < 2) return Error.NotEnoughArguments;
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if (args.len > 2) return Error.TooManyArguments;
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if (seat.focused != .view)
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return;
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// Filter out everything that is not part of the current layout
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if (seat.focused.view.pending.float or seat.focused.view.pending.fullscreen) return;
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const direction = std.meta.stringToEnum(Direction, args[1]) orelse return Error.InvalidDirection;
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const focused_node = @fieldParentPtr(ViewStack(View).Node, "view", seat.focused.view);
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const output = seat.focused_output;
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var it = ViewStack(View).iter(
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focused_node,
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if (direction == .next) .forward else .reverse,
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output.pending.tags,
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filter,
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);
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var it_wrap = ViewStack(View).iter(
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if (direction == .next) output.views.first else output.views.last,
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if (direction == .next) .forward else .reverse,
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output.pending.tags,
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filter,
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);
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// skip the first node which is focused_node
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_ = it.next().?;
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const to_swap = @fieldParentPtr(
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ViewStack(View).Node,
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"view",
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// Wrap around if needed
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if (it.next()) |next| next else it_wrap.next().?,
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);
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// Dont swap when only the focused view is part of the layout
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if (focused_node == to_swap) {
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return;
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}
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output.views.swap(focused_node, to_swap);
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output.arrangeViews();
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server.root.startTransaction();
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}
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fn filter(view: *View, filter_tags: u32) bool {
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return !view.destroying and !view.pending.float and
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!view.pending.fullscreen and view.pending.tags & filter_tags != 0;
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}
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