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const std = @import("std");
const c = @import("c.zig");
const Box = @import("box.zig").Box;
const Log = @import("log.zig").Log;
const Output = @import("output.zig").Output;
pub const LayerSurface = struct {
const Self = @This();
output: *Output,
wlr_layer_surface: *c.wlr_layer_surface_v1,
box: Box,
layer: c.zwlr_layer_shell_v1_layer,
listen_map: c.wl_listener,
listen_unmap: c.wl_listener,
listen_destroy: c.wl_listener,
listen_commit: c.wl_listener,
listen_new_popup: c.wl_listener,
pub fn init(
self: *Self,
output: *Output,
wlr_layer_surface: *c.wlr_layer_surface_v1,
layer: c.zwlr_layer_shell_v1_layer,
) void {
self.output = output;
self.wlr_layer_surface = wlr_layer_surface;
self.box = undefined;
self.layer = layer;
self.listen_map.notify = handleMap;
c.wl_signal_add(&self.wlr_layer_surface.events.map, &self.listen_map);
self.listen_unmap.notify = handleUnmap;
c.wl_signal_add(&self.wlr_layer_surface.events.unmap, &self.listen_unmap);
self.listen_destroy.notify = handleDestroy;
c.wl_signal_add(&self.wlr_layer_surface.events.destroy, &self.listen_destroy);
self.listen_commit.notify = handleCommit;
c.wl_signal_add(&self.wlr_layer_surface.surface.*.events.commit, &self.listen_commit);
self.listen_new_popup.notify = handleNewPopup;
c.wl_signal_add(&self.wlr_layer_surface.events.new_popup, &self.listen_new_popup);
}
/// Send a configure event to the client with the dimensions of the current box
pub fn sendConfigure(self: Self) void {
c.wlr_layer_surface_v1_configure(self.wlr_layer_surface, self.box.width, self.box.height);
}
fn handleMap(listener: ?*c.wl_listener, data: ?*c_void) callconv(.C) void {
const layer_surface = @fieldParentPtr(LayerSurface, "listen_map", listener.?);
c.wlr_surface_send_enter(
layer_surface.wlr_layer_surface.surface,
layer_surface.wlr_layer_surface.output,
);
layer_surface.output.arrangeLayers();
}
fn handleUnmap(listener: ?*c.wl_listener, data: ?*c_void) callconv(.C) void {
const layer_surface = @fieldParentPtr(LayerSurface, "listen_unmap", listener.?);
}
fn handleDestroy(listener: ?*c.wl_listener, data: ?*c_void) callconv(.C) void {
const layer_surface = @fieldParentPtr(LayerSurface, "listen_destroy", listener.?);
Log.Debug.log("Layer surface '{}' destroyed", .{layer_surface.wlr_layer_surface.namespace});
const node = @fieldParentPtr(std.TailQueue(LayerSurface).Node, "data", layer_surface);
layer_surface.output.layers[@intCast(usize, @enumToInt(layer_surface.layer))].remove(node);
layer_surface.output.root.server.allocator.destroy(node);
layer_surface.output.arrangeLayers();
}
fn handleCommit(listener: ?*c.wl_listener, data: ?*c_void) callconv(.C) void {
const layer_surface = @fieldParentPtr(LayerSurface, "listen_commit", listener.?);
const wlr_layer_surface = layer_surface.wlr_layer_surface;
if (layer_surface.wlr_layer_surface.output == null) {
Log.Error.log("Layer surface committed with null output", .{});
return;
}
// If the layer changed, move the LayerSurface to the proper list
if (layer_surface.layer != layer_surface.wlr_layer_surface.current.layer) {
const node = @fieldParentPtr(std.TailQueue(LayerSurface).Node, "data", layer_surface);
const old_layer_idx = @intCast(usize, @enumToInt(layer_surface.layer));
layer_surface.output.layers[old_layer_idx].remove(node);
layer_surface.layer = layer_surface.wlr_layer_surface.current.layer;
const new_layer_idx = @intCast(usize, @enumToInt(layer_surface.layer));
layer_surface.output.layers[new_layer_idx].append(node);
}
// TODO: only reconfigure if things haven't changed
// https://github.com/swaywm/wlroots/issues/1079
layer_surface.output.arrangeLayers();
}
fn handleNewPopup(listener: ?*c.wl_listener, data: ?*c_void) callconv(.C) void {
const layer_surface = @fieldParentPtr(LayerSurface, "listen_new_popup", listener.?);
Log.Debug.log("new layer surface popup.", .{});
// TODO: handle popups
unreachable;
}
};
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