Make Root a toplevel struct
This commit is contained in:
Isaac Freund
@ -8,7 +8,7 @@ const render = @import("render.zig");
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const Box = @import("box.zig");
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const LayerSurface = @import("layer_surface.zig");
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const Log = @import("log.zig").Log;
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const Root = @import("root.zig").Root;
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const Root = @import("root.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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392
src/root.zig
392
src/root.zig
@ -1,224 +1,220 @@
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const std = @import("std");
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const c = @import("c.zig");
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const util = @import("util.zig");
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const Self = @This();
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const std = @import("std");
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const c = @import("c.zig");
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const Box = @import("box.zig").Box;
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const Log = @import("log.zig").Log;
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const Output = @import("output.zig");
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const Server = @import("server.zig");
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const Seat = @import("seat.zig").Seat;
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const View = @import("view.zig");
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const ViewStack = @import("view_stack.zig").ViewStack;
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/// Responsible for all windowing operations
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pub const Root = struct {
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const Self = @This();
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server: *Server,
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server: *Server,
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wlr_output_layout: *c.wlr_output_layout,
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outputs: std.TailQueue(Output),
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wlr_output_layout: *c.wlr_output_layout,
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outputs: std.TailQueue(Output),
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/// This output is used internally when no real outputs are available.
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/// It is not advertised to clients.
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noop_output: Output,
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/// This output is used internally when no real outputs are available.
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/// It is not advertised to clients.
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noop_output: Output,
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/// Number of pending configures sent in the current transaction.
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/// A value of 0 means there is no current transaction.
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pending_configures: u32,
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/// Number of pending configures sent in the current transaction.
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/// A value of 0 means there is no current transaction.
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pending_configures: u32,
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/// Handles timeout of transactions
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transaction_timer: ?*c.wl_event_source,
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/// Handles timeout of transactions
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transaction_timer: ?*c.wl_event_source,
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pub fn init(self: *Self, server: *Server) !void {
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self.server = server;
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pub fn init(self: *Self, server: *Server) !void {
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self.server = server;
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// Create an output layout, which a wlroots utility for working with an
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// arrangement of screens in a physical layout.
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self.wlr_output_layout = c.wlr_output_layout_create() orelse
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return error.CantCreateWlrOutputLayout;
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errdefer c.wlr_output_layout_destroy(self.wlr_output_layout);
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// Create an output layout, which a wlroots utility for working with an
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// arrangement of screens in a physical layout.
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self.wlr_output_layout = c.wlr_output_layout_create() orelse
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return error.CantCreateWlrOutputLayout;
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errdefer c.wlr_output_layout_destroy(self.wlr_output_layout);
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self.outputs = std.TailQueue(Output).init();
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self.outputs = std.TailQueue(Output).init();
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const noop_wlr_output = c.river_wlr_noop_add_output(server.noop_backend) orelse
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return error.CantAddNoopOutput;
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try self.noop_output.init(self, noop_wlr_output);
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const noop_wlr_output = c.river_wlr_noop_add_output(server.noop_backend) orelse
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return error.CantAddNoopOutput;
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try self.noop_output.init(self, noop_wlr_output);
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self.pending_configures = 0;
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self.pending_configures = 0;
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self.transaction_timer = null;
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}
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self.transaction_timer = null;
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pub fn deinit(self: *Self) void {
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while (self.outputs.pop()) |output_node| {
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output_node.data.deinit();
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self.server.allocator.destroy(output_node);
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}
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c.wlr_output_layout_destroy(self.wlr_output_layout);
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}
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pub fn deinit(self: *Self) void {
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while (self.outputs.pop()) |output_node| {
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output_node.data.deinit();
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self.server.allocator.destroy(output_node);
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}
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c.wlr_output_layout_destroy(self.wlr_output_layout);
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}
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pub fn addOutput(self: *Self, wlr_output: *c.wlr_output) void {
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// TODO: Handle failure
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const node = self.outputs.allocateNode(self.server.allocator) catch unreachable;
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node.data.init(self, wlr_output) catch unreachable;
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self.outputs.append(node);
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pub fn addOutput(self: *Self, wlr_output: *c.wlr_output) void {
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// TODO: Handle failure
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const node = self.outputs.allocateNode(self.server.allocator) catch unreachable;
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node.data.init(self, wlr_output) catch unreachable;
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self.outputs.append(node);
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// if we previously had no real outputs, move focus from the noop output
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// to the new one.
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if (self.outputs.len == 1) {
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// TODO: move views from the noop output to the new one and focus(null)
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var it = self.server.input_manager.seats.first;
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while (it) |seat_node| : (it = seat_node.next) {
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seat_node.data.focused_output = &self.outputs.first.?.data;
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}
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}
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}
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/// Clear the current focus.
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pub fn clearFocus(self: *Self) void {
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if (self.focused_view) |view| {
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_ = c.wlr_xdg_toplevel_set_activated(view.wlr_xdg_surface, false);
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}
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self.focused_view = null;
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}
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/// Arrange all views on all outputs and then start a transaction.
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pub fn arrange(self: *Self) void {
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var it = self.outputs.first;
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while (it) |output_node| : (it = output_node.next) {
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output_node.data.arrangeViews();
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}
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self.startTransaction();
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}
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/// Initiate an atomic change to the layout. This change will not be
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/// applied until all affected clients ack a configure and commit a buffer.
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fn startTransaction(self: *Self) void {
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// If a new transaction is started while another is in progress, we need
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// to reset the pending count to 0 and clear serials from the views
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self.pending_configures = 0;
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// Iterate over all views of all outputs
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var output_it = self.outputs.first;
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while (output_it) |node| : (output_it = node.next) {
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const output = &node.data;
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var view_it = ViewStack(View).iterator(output.views.first, 0xFFFFFFFF);
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while (view_it.next()) |view_node| {
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const view = &view_node.view;
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// Clear the serial in case this transaction is interrupting a prior one.
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view.pending_serial = null;
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if (view.needsConfigure()) {
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view.configure();
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self.pending_configures += 1;
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// We save the current buffer, so we can send an early
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// frame done event to give the client a head start on
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// redrawing.
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view.sendFrameDone();
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}
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// If there is a saved buffer present, then this transaction is interrupting
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// a previous transaction and we should keep the old buffer.
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if (view.stashed_buffer == null) {
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view.stashBuffer();
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}
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}
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}
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if (self.pending_configures > 0) {
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Log.Debug.log(
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"Started transaction with {} pending configures.",
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.{self.pending_configures},
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);
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// TODO: log failure to create timer and commit immediately
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self.transaction_timer = c.wl_event_loop_add_timer(
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self.server.wl_event_loop,
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handleTimeout,
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self,
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);
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// Set timeout to 200ms
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if (c.wl_event_source_timer_update(self.transaction_timer, 200) == -1) {
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// TODO: handle failure
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}
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} else {
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self.commitTransaction();
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}
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}
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fn handleTimeout(data: ?*c_void) callconv(.C) c_int {
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const root = @ptrCast(*Root, @alignCast(@alignOf(*Root), data));
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Log.Error.log("Transaction timed out. Some imperfect frames may be shown.", .{});
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root.commitTransaction();
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return 0;
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}
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pub fn notifyConfigured(self: *Self) void {
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self.pending_configures -= 1;
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if (self.pending_configures == 0) {
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// Stop the timer, as we didn't timeout
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if (c.wl_event_source_timer_update(self.transaction_timer, 0) == -1) {
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// TODO: handle failure
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}
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self.commitTransaction();
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}
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}
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/// Apply the pending state and drop stashed buffers. This means that
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/// the next frame drawn will be the post-transaction state of the
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/// layout. Should only be called after all clients have configured for
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/// the new layout. If called early imperfect frames may be drawn.
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fn commitTransaction(self: *Self) void {
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// TODO: apply damage properly
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// Ensure this is set to 0 to avoid entering invalid state (e.g. if called due to timeout)
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self.pending_configures = 0;
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// Iterate over all views of all outputs
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var output_it = self.outputs.first;
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while (output_it) |output_node| : (output_it = output_node.next) {
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const output = &output_node.data;
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// If there were pending focused tags, make them the current focus
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if (output.pending_focused_tags) |tags| {
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Log.Debug.log(
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"changing current focus: {b:0>10} to {b:0>10}",
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.{ output.current_focused_tags, tags },
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);
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output.current_focused_tags = tags;
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output.pending_focused_tags = null;
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}
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var view_it = ViewStack(View).iterator(output.views.first, 0xFFFFFFFF);
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while (view_it.next()) |view_node| {
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const view = &view_node.view;
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// Ensure that all pending state is cleared
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view.pending_serial = null;
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if (view.pending_box) |state| {
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view.current_box = state;
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view.pending_box = null;
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}
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// Apply possible pending tags
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if (view.pending_tags) |tags| {
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view.current_tags = tags;
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view.pending_tags = null;
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}
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view.dropStashedBuffer();
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}
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}
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// Iterate over all seats and update focus
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// if we previously had no real outputs, move focus from the noop output
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// to the new one.
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if (self.outputs.len == 1) {
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// TODO: move views from the noop output to the new one and focus(null)
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var it = self.server.input_manager.seats.first;
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while (it) |seat_node| : (it = seat_node.next) {
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seat_node.data.focus(null);
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seat_node.data.focused_output = &self.outputs.first.?.data;
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}
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}
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};
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}
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/// Clear the current focus.
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pub fn clearFocus(self: *Self) void {
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if (self.focused_view) |view| {
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_ = c.wlr_xdg_toplevel_set_activated(view.wlr_xdg_surface, false);
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}
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self.focused_view = null;
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}
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/// Arrange all views on all outputs and then start a transaction.
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pub fn arrange(self: *Self) void {
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var it = self.outputs.first;
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while (it) |output_node| : (it = output_node.next) {
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output_node.data.arrangeViews();
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}
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self.startTransaction();
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}
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/// Initiate an atomic change to the layout. This change will not be
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/// applied until all affected clients ack a configure and commit a buffer.
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fn startTransaction(self: *Self) void {
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// If a new transaction is started while another is in progress, we need
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// to reset the pending count to 0 and clear serials from the views
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self.pending_configures = 0;
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// Iterate over all views of all outputs
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var output_it = self.outputs.first;
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while (output_it) |node| : (output_it = node.next) {
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const output = &node.data;
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var view_it = ViewStack(View).iterator(output.views.first, 0xFFFFFFFF);
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while (view_it.next()) |view_node| {
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const view = &view_node.view;
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// Clear the serial in case this transaction is interrupting a prior one.
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view.pending_serial = null;
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if (view.needsConfigure()) {
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view.configure();
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self.pending_configures += 1;
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// We save the current buffer, so we can send an early
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// frame done event to give the client a head start on
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// redrawing.
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view.sendFrameDone();
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}
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// If there is a saved buffer present, then this transaction is interrupting
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// a previous transaction and we should keep the old buffer.
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if (view.stashed_buffer == null) {
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view.stashBuffer();
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}
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}
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}
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if (self.pending_configures > 0) {
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Log.Debug.log(
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"Started transaction with {} pending configures.",
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.{self.pending_configures},
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);
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// TODO: log failure to create timer and commit immediately
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self.transaction_timer = c.wl_event_loop_add_timer(
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self.server.wl_event_loop,
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handleTimeout,
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self,
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);
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// Set timeout to 200ms
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if (c.wl_event_source_timer_update(self.transaction_timer, 200) == -1) {
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// TODO: handle failure
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}
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} else {
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self.commitTransaction();
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}
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}
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fn handleTimeout(data: ?*c_void) callconv(.C) c_int {
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const self = @ptrCast(*Self, @alignCast(@alignOf(*Self), data));
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Log.Error.log("Transaction timed out. Some imperfect frames may be shown.", .{});
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self.commitTransaction();
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return 0;
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}
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pub fn notifyConfigured(self: *Self) void {
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self.pending_configures -= 1;
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if (self.pending_configures == 0) {
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// Stop the timer, as we didn't timeout
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if (c.wl_event_source_timer_update(self.transaction_timer, 0) == -1) {
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// TODO: handle failure
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}
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self.commitTransaction();
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}
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}
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/// Apply the pending state and drop stashed buffers. This means that
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/// the next frame drawn will be the post-transaction state of the
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/// layout. Should only be called after all clients have configured for
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/// the new layout. If called early imperfect frames may be drawn.
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fn commitTransaction(self: *Self) void {
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// TODO: apply damage properly
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// Ensure this is set to 0 to avoid entering invalid state (e.g. if called due to timeout)
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self.pending_configures = 0;
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// Iterate over all views of all outputs
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var output_it = self.outputs.first;
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while (output_it) |output_node| : (output_it = output_node.next) {
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const output = &output_node.data;
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// If there were pending focused tags, make them the current focus
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if (output.pending_focused_tags) |tags| {
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Log.Debug.log(
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"changing current focus: {b:0>10} to {b:0>10}",
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.{ output.current_focused_tags, tags },
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);
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output.current_focused_tags = tags;
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output.pending_focused_tags = null;
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}
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var view_it = ViewStack(View).iterator(output.views.first, 0xFFFFFFFF);
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while (view_it.next()) |view_node| {
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const view = &view_node.view;
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// Ensure that all pending state is cleared
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view.pending_serial = null;
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if (view.pending_box) |state| {
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view.current_box = state;
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view.pending_box = null;
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}
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// Apply possible pending tags
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if (view.pending_tags) |tags| {
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view.current_tags = tags;
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view.pending_tags = null;
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}
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view.dropStashedBuffer();
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}
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}
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// Iterate over all seats and update focus
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var it = self.server.input_manager.seats.first;
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while (it) |seat_node| : (it = seat_node.next) {
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seat_node.data.focus(null);
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}
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}
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@ -9,7 +9,7 @@ const DecorationManager = @import("decoration_manager.zig");
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const InputManager = @import("input_manager.zig");
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const Log = @import("log.zig").Log;
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const Output = @import("output.zig");
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const Root = @import("root.zig").Root;
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const Root = @import("root.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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@ -7,7 +7,7 @@ const c = @import("c.zig");
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const Box = @import("box.zig");
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const Log = @import("log.zig").Log;
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const Output = @import("output.zig");
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const Root = @import("root.zig").Root;
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const Root = @import("root.zig");
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const ViewStack = @import("view_stack.zig").ViewStack;
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const XdgToplevel = @import("xdg_toplevel.zig");
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