wayland_bridge/
output.rs

1// Copyright 2018 The Fuchsia Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5use crate::aura_shell::AuraOutput;
6use crate::client::Client;
7use crate::object::{ObjectRef, RequestReceiver};
8use anyhow::Error;
9use fidl_fuchsia_ui_gfx::DisplayInfo;
10use fuchsia_wayland_core as wl;
11use wayland_server_protocol::{wl_output, WlOutput, WlOutputEvent, WlOutputRequest};
12
13/// An implementation of the wl_output global.
14pub struct Output {
15    aura_output: Option<ObjectRef<AuraOutput>>,
16}
17
18impl Output {
19    /// Creates a new `Output`.
20    pub fn new() -> Self {
21        Output { aura_output: None }
22    }
23
24    pub fn set_aura_output(&mut self, aura_output: ObjectRef<AuraOutput>) {
25        self.aura_output = Some(aura_output);
26    }
27
28    pub fn post_output_info(
29        this: wl::ObjectId,
30        client: &Client,
31        display_info: &DisplayInfo,
32    ) -> Result<(), Error> {
33        // Just report the current display info as our only mode.
34        client.event_queue().post(
35            this,
36            WlOutputEvent::Mode {
37                flags: wl_output::Mode::Current | wl_output::Mode::Preferred,
38                width: display_info.width_in_px as i32,
39                height: display_info.height_in_px as i32,
40                // Vertical refresh rate in mHz.
41                refresh: 60 * 1000,
42            },
43        )?;
44        client.event_queue().post(
45            this,
46            WlOutputEvent::Geometry {
47                make: "unknown".to_string(),
48                model: "unknown".to_string(),
49                x: 0,
50                y: 0,
51                subpixel: wl_output::Subpixel::None,
52                transform: wl_output::Transform::Normal,
53                // TODO(tjdetwiler): at 96dpi pixels would be ~.264mm.
54                // Approximate this as .25 as a placeholder until we can query
55                // scenic for real resolution.
56                physical_width: display_info.width_in_px as i32 / 4,
57                physical_height: display_info.height_in_px as i32 / 4,
58            },
59        )?;
60        client.event_queue().post(this, WlOutputEvent::Scale { factor: 1 })?;
61        Ok(())
62    }
63
64    pub fn post_output_done(this: wl::ObjectId, client: &Client) -> Result<(), Error> {
65        client.event_queue().post(this, WlOutputEvent::Done)
66    }
67
68    pub fn post_display_info(
69        this: ObjectRef<Self>,
70        client: &Client,
71        display_info: &DisplayInfo,
72    ) -> Result<(), Error> {
73        let output = this.get(client)?;
74
75        // Post basic output info.
76        Self::post_output_info(this.id(), client, display_info)?;
77
78        // Post additional Aura output info if requested.
79        if let Some(aura_output) = output.aura_output {
80            AuraOutput::post_display_info(aura_output, client, display_info)?;
81        }
82
83        // Any series of output events must be concluded with a 'done' event.
84        Self::post_output_done(this.id(), client)?;
85        Ok(())
86    }
87}
88
89impl RequestReceiver<WlOutput> for Output {
90    fn receive(
91        this: ObjectRef<Self>,
92        request: WlOutputRequest,
93        client: &mut Client,
94    ) -> Result<(), Error> {
95        let WlOutputRequest::Release = request;
96        client.delete_id(this.id())?;
97        Ok(())
98    }
99}
wayland_bridge/output.rs

wayland_bridge/
output.rs
