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const std = @import("std");
const c = @import("c.zig");
const Log = @import("log.zig").Log;
const Output = @import("output.zig").Output;
const Seat = @import("seat.zig").Seat;
const View = @import("view.zig").View;
const ViewStack = @import("view_stack.zig").ViewStack;
pub const Arg = union {
int: i32,
uint: u32,
float: f64,
str: []const u8,
none: void,
};
pub const Command = fn (seat: *Seat, arg: Arg) void;
/// Exit the compositor, terminating the wayland session.
pub fn exitCompositor(seat: *Seat, arg: Arg) void {
c.wl_display_terminate(seat.input_manager.server.wl_display);
}
/// Focus either the next or the previous visible view, depending on the bool
/// passed.
fn focusNextPrevView(seat: *Seat, next: bool) void {
const output = seat.focused_output;
if (seat.focused_view) |current_focus| {
// If there is a currently focused view, focus the next visible view in the stack.
const focused_node = @fieldParentPtr(ViewStack(View).Node, "view", current_focus);
var it = if (next)
ViewStack(View).iterator(focused_node, output.current_focused_tags)
else
ViewStack(View).reverseIterator(focused_node, output.current_focused_tags);
// Skip past the focused node
_ = it.next();
// Focus the next visible node if there is one
if (it.next()) |node| {
seat.focus(&node.view);
return;
}
}
// There is either no currently focused view or the last visible view in the
// stack is focused and we need to wrap.
var it = if (next)
ViewStack(View).iterator(output.views.first, output.current_focused_tags)
else
ViewStack(View).reverseIterator(output.views.last, output.current_focused_tags);
seat.focus(if (it.next()) |node| &node.view else null);
}
/// Focus the next visible view in the stack, wrapping if needed. Does
/// nothing if there is only one view in the stack.
pub fn focusNextView(seat: *Seat, arg: Arg) void {
focusNextPrevView(seat, true);
}
/// Focus the previous view in the stack, wrapping if needed. Does nothing
/// if there is only one view in the stack.
pub fn focusPrevView(seat: *Seat, arg: Arg) void {
focusNextPrevView(seat, false);
}
/// Focus either the next or the previous output, depending on the bool passed.
fn focusNextPrevOutput(seat: *Seat, next: bool) void {
const root = &seat.input_manager.server.root;
// If the noop output is focused, there are no other outputs to switch to
if (seat.focused_output == &root.noop_output) {
std.debug.assert(root.outputs.len == 0);
return;
}
const focused_node = @fieldParentPtr(std.TailQueue(Output).Node, "data", seat.focused_output);
seat.focused_output = if (if (next) focused_node.next else focused_node.prev) |output_node|
// Focus the next/prev output in the list if there is one
&output_node.data
else if (next) &root.outputs.first.?.data else &root.outputs.last.?.data;
seat.focus(null);
}
/// Focus the next output, wrapping if needed. Does nothing if there is
/// only one output.
pub fn focusNextOutput(seat: *Seat, arg: Arg) void {
focusNextPrevOutput(seat, true);
}
/// Focus the previous output, wrapping if needed. Does nothing if there is
/// only one output.
pub fn focusPrevOutput(seat: *Seat, arg: Arg) void {
focusNextPrevOutput(seat, false);
}
/// Modify the number of master views
pub fn modifyMasterCount(seat: *Seat, arg: Arg) void {
const delta = arg.int;
const output = seat.focused_output;
output.master_count = @intCast(
u32,
std.math.max(0, @intCast(i32, output.master_count) + delta),
);
seat.input_manager.server.root.arrange();
}
/// Modify the percent of the width of the screen that the master views occupy.
pub fn modifyMasterFactor(seat: *Seat, arg: Arg) void {
const delta = arg.float;
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();
}
}
/// Bump the focused view to the top of the stack.
/// TODO: if the top of the stack is focused, bump the next visible view.
pub fn zoom(seat: *Seat, arg: Arg) void {
if (seat.focused_view) |current_focus| {
const output = seat.focused_output;
const node = @fieldParentPtr(ViewStack(View).Node, "view", current_focus);
if (node != output.views.first) {
output.views.remove(node);
output.views.push(node);
seat.input_manager.server.root.arrange();
}
}
}
/// Switch focus to the passed tags.
pub fn focusTags(seat: *Seat, arg: Arg) void {
const tags = arg.uint;
seat.focused_output.pending_focused_tags = tags;
seat.input_manager.server.root.arrange();
}
/// Toggle focus of the passsed tags.
pub fn toggleTags(seat: *Seat, arg: Arg) void {
const tags = arg.uint;
const output = seat.focused_output;
const new_focused_tags = output.current_focused_tags ^ tags;
if (new_focused_tags != 0) {
output.pending_focused_tags = new_focused_tags;
seat.input_manager.server.root.arrange();
}
}
/// Set the tags of the focused view.
pub fn setFocusedViewTags(seat: *Seat, arg: Arg) void {
const tags = arg.uint;
if (seat.focused_view) |view| {
if (view.current_tags != tags) {
view.pending_tags = tags;
seat.input_manager.server.root.arrange();
}
}
}
/// Toggle the passed tags of the focused view
pub fn toggleFocusedViewTags(seat: *Seat, arg: Arg) void {
const tags = arg.uint;
if (seat.focused_view) |view| {
const new_tags = view.current_tags ^ tags;
if (new_tags != 0) {
view.pending_tags = new_tags;
seat.input_manager.server.root.arrange();
}
}
}
/// Spawn a program.
pub fn spawn(seat: *Seat, arg: Arg) void {
const cmd = arg.str;
const argv = [_][]const u8{ "/bin/sh", "-c", cmd };
const child = std.ChildProcess.init(&argv, std.heap.c_allocator) catch |err| {
Log.Error.log("Failed to execute {}: {}", .{ cmd, err });
return;
};
std.ChildProcess.spawn(child) catch |err| {
Log.Error.log("Failed to execute {}: {}", .{ cmd, err });
return;
};
}
/// Close the focused view, if any.
pub fn close(seat: *Seat, arg: Arg) void {
if (seat.focused_view) |view| {
view.close();
}
}
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