mirror of
https://github.com/MezzalunaWM/Mezzaluna.git
synced 2026-03-07 19:49:53 -05:00
364 lines
10 KiB
Zig
364 lines
10 KiB
Zig
const Output = @This();
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const wl = @import("wayland").server.wl;
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const zwlr = @import("wayland").server.zwlr;
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const wlr = @import("wlroots");
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const std = @import("std");
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const Utils = @import("Utils.zig");
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const Server = @import("Server.zig");
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const View = @import("View.zig");
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const LayerSurface = @import("LayerSurface.zig");
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const SceneNodeData = @import("SceneNodeData.zig").SceneNodeData;
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const posix = std.posix;
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const gpa = std.heap.c_allocator;
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const server = &@import("main.zig").server;
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focused: bool,
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id: u64,
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fullscreen: ?*View,
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wlr_output: *wlr.Output,
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state: wlr.Output.State,
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tree: *wlr.SceneTree,
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scene_node_data: SceneNodeData,
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scene_output: *wlr.SceneOutput,
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layers: struct {
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background: *wlr.SceneTree,
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bottom: *wlr.SceneTree,
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content: *wlr.SceneTree,
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top: *wlr.SceneTree,
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fullscreen: *wlr.SceneTree,
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overlay: *wlr.SceneTree
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},
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layer_scene_node_data: struct {
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background: SceneNodeData,
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bottom: SceneNodeData,
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content: SceneNodeData,
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top: SceneNodeData,
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fullscreen: SceneNodeData,
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overlay: SceneNodeData
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},
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frame: wl.Listener(*wlr.Output) = .init(handleFrame),
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request_state: wl.Listener(*wlr.Output.event.RequestState) = .init(handleRequestState),
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destroy: wl.Listener(*wlr.Output) = .init(handleDestroy),
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// The wlr.Output should be destroyed by the caller on failure to trigger cleanup.
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pub fn init(wlr_output: *wlr.Output) ?*Output {
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errdefer Utils.oomPanic();
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server.events.exec("OutputInitPre", .{});
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const self = try gpa.create(Output);
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self.* = .{
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.focused = false,
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.id = @intFromPtr(wlr_output),
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.wlr_output = wlr_output,
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.tree = try server.root.scene.tree.createSceneTree(),
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.fullscreen = null,
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.layers = .{
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.background = try self.tree.createSceneTree(),
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.bottom = try self.tree.createSceneTree(),
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.content = try self.tree.createSceneTree(),
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.top = try self.tree.createSceneTree(),
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.fullscreen = try self.tree.createSceneTree(),
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.overlay = try self.tree.createSceneTree(),
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},
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.layer_scene_node_data = .{
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.background = .{ .output_layer = self.layers.background },
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.bottom = .{ .output_layer = self.layers.bottom },
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.content = .{ .output_layer = self.layers.content },
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.top = .{ .output_layer = self.layers.top },
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.fullscreen = .{ .output_layer = self.layers.fullscreen },
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.overlay = .{ .output_layer = self.layers.overlay }
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},
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.scene_output = try server.root.scene.createSceneOutput(wlr_output),
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.scene_node_data = SceneNodeData{ .output = self },
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.state = wlr.Output.State.init()
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};
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wlr_output.events.frame.add(&self.frame);
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wlr_output.events.request_state.add(&self.request_state);
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wlr_output.events.destroy.add(&self.destroy);
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errdefer deinit(self);
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if(!wlr_output.initRender(server.allocator, server.renderer)) {
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std.log.err("Unable to start output {s}", .{wlr_output.name});
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return null;
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}
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self.state.setEnabled(true);
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if (wlr_output.preferredMode()) |mode| {
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self.state.setMode(mode);
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}
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if(!wlr_output.commitState(&self.state)) {
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std.log.err("Unable to commit state to output {s}", .{wlr_output.name});
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return null;
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}
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const layout_output = try server.root.output_layout.addAuto(self.wlr_output);
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server.root.scene_output_layout.addOutput(layout_output, self.scene_output);
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self.setFocused();
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self.wlr_output.data = &self.scene_node_data;
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self.tree.node.data = &self.scene_node_data;
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self.layers.background.node.data = &self.layer_scene_node_data.background;
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self.layers.bottom.node.data = &self.layer_scene_node_data.bottom;
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self.layers.content.node.data = &self.layer_scene_node_data.content;
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self.layers.top.node.data = &self.layer_scene_node_data.top;
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self.layers.fullscreen.node.data = &self.layer_scene_node_data.fullscreen;
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self.layers.overlay.node.data = &self.layer_scene_node_data.overlay;
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server.events.exec("OutputInitPost", .{self.id});
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return self;
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}
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pub fn deinit(self: *Output) void {
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server.events.exec("OutputDeinitPre", .{self.id});
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self.frame.link.remove();
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self.request_state.link.remove();
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self.destroy.link.remove();
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self.state.finish();
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self.wlr_output.destroy();
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server.events.exec("OutputDeinitPost", .{});
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gpa.destroy(self);
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}
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pub fn setFocused(self: *Output) void {
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if(server.seat.focused_output) |prev_output| {
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prev_output.focused = false;
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}
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server.seat.focused_output = self;
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self.focused = true;
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}
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pub fn configureLayers(self: *Output) void {
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var output_box: wlr.Box = .{
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.x = 0,
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.y = 0,
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.width = undefined,
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.height = undefined,
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};
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self.wlr_output.effectiveResolution(&output_box.width, &output_box.height);
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// Should calculate usable area here for LUA view positioning
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for ([_]zwlr.LayerShellV1.Layer{ .background, .bottom, .top, .overlay }) |layer| {
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const tree = blk: {
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const trees = [_]*wlr.SceneTree{
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self.layers.background,
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self.layers.bottom,
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self.layers.top,
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self.layers.overlay,
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};
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break :blk trees[@intCast(@intFromEnum(layer))];
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};
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var it = tree.children.iterator(.forward);
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while(it.next()) |node| {
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if(node.data == null) continue;
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const scene_node_data: *SceneNodeData = @ptrCast(@alignCast(node.data.?));
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switch (scene_node_data.*) {
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.layer_surface => {
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_ = scene_node_data.layer_surface.wlr_layer_surface.configured(
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@intCast(output_box.width),
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@intCast(output_box.height)
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);
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},
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else => {
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std.log.err("Something other than a layer surface found in layer surface scene trees", .{});
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unreachable;
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}
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}
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}
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}
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}
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const SurfaceAtResult = struct {
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scene_node_data: *SceneNodeData,
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surface: *wlr.Surface,
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sx: f64,
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sy: f64,
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};
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pub fn surfaceAt(self: *Output, lx: f64, ly: f64) ?SurfaceAtResult {
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var sx: f64 = undefined;
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var sy: f64 = undefined;
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const layers = [_]*wlr.SceneTree{
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self.layers.top,
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self.layers.overlay,
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self.layers.fullscreen,
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self.layers.content,
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self.layers.bottom,
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self.layers.background
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};
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for(layers) |layer| {
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const node = layer.node.at(lx, ly, &sx, &sy);
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if(node == null) continue;
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const surface: ?*wlr.Surface = blk: {
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if (node.?.type == .buffer) {
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const scene_buffer = wlr.SceneBuffer.fromNode(node.?);
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if (wlr.SceneSurface.tryFromBuffer(scene_buffer)) |scene_surface| {
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break :blk scene_surface.surface;
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}
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}
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break :blk null;
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};
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if(surface == null) continue;
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const scene_node_data: *SceneNodeData = blk: {
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var n = node.?;
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while (true) {
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if (@as(?*SceneNodeData, @ptrCast(@alignCast(n.data)))) |snd| {
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break :blk snd;
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}
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if (n.parent) |parent_tree| {
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n = &parent_tree.node;
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} else {
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continue;
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}
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}
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};
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switch (scene_node_data.*) {
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.layer_surface, .view => {
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return SurfaceAtResult{
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.scene_node_data = scene_node_data,
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.surface = surface.?,
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.sx = sx,
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.sy = sy,
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};
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},
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else => continue
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}
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}
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return null;
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}
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pub fn getFullscreenedView(self: *Output) ?*View {
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if(self.layers.fullscreen.children.length() != 1) {
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return null;
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}
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var it = self.layers.fullscreen.children.iterator(.forward);
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if(it.next().?.data) |data| {
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const scene_node_data: *SceneNodeData = @ptrCast(@alignCast(data));
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if(scene_node_data.* == .view) {
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return scene_node_data.view;
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}
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}
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return null;
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}
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// --------- WlrOutput Event Handlers ---------
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fn handleRequestState(
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listener: *wl.Listener(*wlr.Output.event.RequestState),
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event: *wlr.Output.event.RequestState,
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) void {
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const output: *Output = @fieldParentPtr("request_state", listener);
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if (!output.wlr_output.commitState(event.state)) {
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std.log.warn("failed to set output state {}", .{event.state});
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}
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}
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fn handleFrame(
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_: *wl.Listener(*wlr.Output),
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wlr_output: *wlr.Output
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) void {
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const scene_output = server.root.scene.getSceneOutput(wlr_output);
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if(scene_output == null) {
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std.log.err("Unable to get scene output to render", .{});
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return;
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}
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// std.log.info("Rendering commited scene output\n", .{});
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_ = scene_output.?.commit(null);
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var now = posix.clock_gettime(posix.CLOCK.MONOTONIC) catch @panic("CLOCK_MONOTONIC not supported");
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scene_output.?.sendFrameDone(&now);
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}
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fn handleDestroy(
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listener: *wl.Listener(*wlr.Output),
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_: *wlr.Output
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) void {
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std.log.debug("Handling destroy", .{});
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const output: *Output = @fieldParentPtr("destroy", listener);
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std.log.debug("removing output: {s}", .{output.wlr_output.name});
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output.frame.link.remove();
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output.request_state.link.remove();
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output.destroy.link.remove();
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server.root.output_layout.remove(output.wlr_output);
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gpa.destroy(output);
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}
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pub fn arrangeLayers(self: *Output) void {
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var full_box: wlr.Box = .{
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.x = 0,
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.y = 0,
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.width = undefined,
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.height = undefined,
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};
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self.wlr_output.effectiveResolution(&full_box.width, &full_box.height);
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inline for (@typeInfo(zwlr.LayerShellV1.Layer).@"enum".fields) |comptime_layer| {
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const layer: *wlr.SceneTree = @field(self.layers, comptime_layer.name);
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var it = layer.children.safeIterator(.forward);
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while (it.next()) |node| {
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if(node.data == null) continue;
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// if (@as(?*SceneNodeData, @alignCast(@ptrCast(node.data)))) |node_data| {
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const scene_node_data: *SceneNodeData = @ptrCast(@alignCast(node.data.?));
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const layer_surface: *LayerSurface = switch(scene_node_data.*) {
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.layer_surface => @fieldParentPtr("scene_node_data", scene_node_data),
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else => continue
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};
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if (!layer_surface.wlr_layer_surface.initialized) continue;
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// TEST: river seems to try and prevent clients from taking an
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// exclusive size greater than half the screen by killing them. Do we
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// need to? Clients can do quite a bit of nasty stuff and taking
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// exclusive focus isn't even that bad.
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layer_surface.scene_layer_surface.configure(&full_box, &full_box);
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// TEST: are these calls useless?
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// const x = layer_surface.scene_layer_surface.tree.node.x;
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// const y = layer_surface.scene_layer_surface.tree.node.y;
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// layer_surface.scene_layer_surface.tree.node.setPosition(x, y);
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}
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}
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}
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