mirror of
https://github.com/servo/servo.git
synced 2025-06-12 18:34:39 +00:00
1419 lines
55 KiB
Rust
1419 lines
55 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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use compositor_layer::{CompositorData, CompositorLayer, WantsScrollEventsFlag};
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use compositor_task::{CompositorEventListener, CompositorProxy, CompositorReceiver};
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use compositor_task::{CompositorTask, LayerProperties, Msg};
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use constellation::{FrameId, SendableFrameTree};
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use pipeline::CompositionPipeline;
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use scrolling::ScrollingTimerProxy;
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use windowing;
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use windowing::{MouseWindowEvent, WindowEvent, WindowMethods, WindowNavigateMsg};
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use std::cmp;
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use std::mem;
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use geom::point::{Point2D, TypedPoint2D};
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use geom::rect::{Rect, TypedRect};
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use geom::size::TypedSize2D;
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use geom::scale_factor::ScaleFactor;
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use gfx::color;
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use gfx::paint_task::Msg as PaintMsg;
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use gfx::paint_task::PaintRequest;
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use layers::geometry::{DevicePixel, LayerPixel};
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use layers::layers::{BufferRequest, Layer, LayerBuffer, LayerBufferSet};
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use layers::rendergl;
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use layers::rendergl::RenderContext;
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use layers::scene::Scene;
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use png;
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use gleam::gl::types::{GLint, GLsizei};
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use gleam::gl;
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use script_traits::{ConstellationControlMsg, ScriptControlChan};
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use msg::compositor_msg::{Epoch, LayerId};
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use msg::compositor_msg::{ReadyState, PaintState, ScrollPolicy};
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use msg::constellation_msg::{ConstellationChan, NavigationDirection};
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use msg::constellation_msg::Msg as ConstellationMsg;
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use msg::constellation_msg::{Key, KeyModifiers, KeyState, LoadData};
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use msg::constellation_msg::{PipelineId, WindowSizeData};
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use util::geometry::{PagePx, ScreenPx, ViewportPx};
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use util::memory::MemoryProfilerChan;
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use util::opts;
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use util::time::{TimeProfilerCategory, profile, TimeProfilerChan};
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use util::{memory, time};
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use std::collections::HashMap;
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use std::collections::hash_map::Entry::{Occupied, Vacant};
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use std::old_path::Path;
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use std::num::Float;
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use std::rc::Rc;
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use std::slice::bytes::copy_memory;
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use std::sync::mpsc::Sender;
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use time::{precise_time_ns, precise_time_s};
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use url::Url;
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/// NB: Never block on the constellation, because sometimes the constellation blocks on us.
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pub struct IOCompositor<Window: WindowMethods> {
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/// The application window.
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window: Rc<Window>,
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/// The port on which we receive messages.
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port: Box<CompositorReceiver>,
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/// The render context. This will be `None` if the windowing system has not yet sent us a
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/// `PrepareRenderingEvent`.
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context: Option<RenderContext>,
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/// The root pipeline.
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root_pipeline: Option<CompositionPipeline>,
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/// Tracks details about each active pipeline that the compositor knows about.
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pipeline_details: HashMap<PipelineId, PipelineDetails>,
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/// The canvas to paint a page.
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scene: Scene<CompositorData>,
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/// The application window size.
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window_size: TypedSize2D<DevicePixel, u32>,
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/// "Mobile-style" zoom that does not reflow the page.
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viewport_zoom: ScaleFactor<PagePx, ViewportPx, f32>,
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/// "Desktop-style" zoom that resizes the viewport to fit the window.
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/// See `ViewportPx` docs in util/geom.rs for details.
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page_zoom: ScaleFactor<ViewportPx, ScreenPx, f32>,
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/// The device pixel ratio for this window.
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hidpi_factor: ScaleFactor<ScreenPx, DevicePixel, f32>,
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/// A handle to the scrolling timer.
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scrolling_timer: ScrollingTimerProxy,
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/// Tracks whether we should composite this frame.
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composition_request: CompositionRequest,
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/// Tracks whether we are in the process of shutting down, or have shut down and should close
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/// the compositor.
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shutdown_state: ShutdownState,
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/// Tracks outstanding paint_msg's sent to the paint tasks.
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outstanding_paint_msgs: uint,
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/// Tracks the last composite time.
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last_composite_time: u64,
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/// Tracks whether the zoom action has happened recently.
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zoom_action: bool,
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/// The time of the last zoom action has started.
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zoom_time: f64,
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/// Whether the page being rendered has loaded completely.
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/// Differs from ReadyState because we can finish loading (ready)
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/// many times for a single page.
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got_load_complete_message: bool,
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/// Whether we have received a `SetFrameTree` message.
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got_set_frame_tree_message: bool,
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/// The channel on which messages can be sent to the constellation.
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constellation_chan: ConstellationChan,
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/// The channel on which messages can be sent to the time profiler.
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time_profiler_chan: TimeProfilerChan,
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/// The channel on which messages can be sent to the memory profiler.
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memory_profiler_chan: MemoryProfilerChan,
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/// Pending scroll to fragment event, if any
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fragment_point: Option<Point2D<f32>>,
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/// Pending scroll events.
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pending_scroll_events: Vec<ScrollEvent>,
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}
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pub struct ScrollEvent {
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delta: TypedPoint2D<DevicePixel,f32>,
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cursor: TypedPoint2D<DevicePixel,i32>,
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}
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#[derive(PartialEq)]
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enum CompositionRequest {
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NoCompositingNecessary,
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CompositeOnScrollTimeout(u64),
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CompositeNow,
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}
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#[derive(Copy, PartialEq, Debug)]
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enum ShutdownState {
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NotShuttingDown,
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ShuttingDown,
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FinishedShuttingDown,
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}
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struct HitTestResult {
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layer: Rc<Layer<CompositorData>>,
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point: TypedPoint2D<LayerPixel, f32>,
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}
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struct PipelineDetails {
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/// The pipeline associated with this PipelineDetails object.
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pipeline: Option<CompositionPipeline>,
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/// The status of this pipeline's ScriptTask.
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ready_state: ReadyState,
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/// The status of this pipeline's PaintTask.
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paint_state: PaintState,
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}
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impl PipelineDetails {
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fn new() -> PipelineDetails {
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PipelineDetails {
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pipeline: None,
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ready_state: ReadyState::Blank,
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paint_state: PaintState::Painting,
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}
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}
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}
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impl<Window: WindowMethods> IOCompositor<Window> {
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fn new(window: Rc<Window>,
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sender: Box<CompositorProxy+Send>,
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receiver: Box<CompositorReceiver>,
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constellation_chan: ConstellationChan,
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time_profiler_chan: TimeProfilerChan,
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memory_profiler_chan: MemoryProfilerChan)
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-> IOCompositor<Window> {
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// Create an initial layer tree.
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//
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// TODO: There should be no initial layer tree until the painter creates one from the
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// display list. This is only here because we don't have that logic in the painter yet.
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let window_size = window.framebuffer_size();
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let hidpi_factor = window.hidpi_factor();
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IOCompositor {
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window: window,
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port: receiver,
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context: None,
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root_pipeline: None,
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pipeline_details: HashMap::new(),
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scene: Scene::new(Rect {
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origin: Point2D::zero(),
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size: window_size.as_f32(),
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}),
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window_size: window_size,
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hidpi_factor: hidpi_factor,
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scrolling_timer: ScrollingTimerProxy::new(sender),
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composition_request: CompositionRequest::NoCompositingNecessary,
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pending_scroll_events: Vec::new(),
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shutdown_state: ShutdownState::NotShuttingDown,
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page_zoom: ScaleFactor(1.0),
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viewport_zoom: ScaleFactor(1.0),
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zoom_action: false,
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zoom_time: 0f64,
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got_load_complete_message: false,
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got_set_frame_tree_message: false,
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constellation_chan: constellation_chan,
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time_profiler_chan: time_profiler_chan,
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memory_profiler_chan: memory_profiler_chan,
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fragment_point: None,
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outstanding_paint_msgs: 0,
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last_composite_time: 0,
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}
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}
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pub fn create(window: Rc<Window>,
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sender: Box<CompositorProxy+Send>,
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receiver: Box<CompositorReceiver>,
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constellation_chan: ConstellationChan,
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time_profiler_chan: TimeProfilerChan,
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memory_profiler_chan: MemoryProfilerChan)
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-> IOCompositor<Window> {
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let mut compositor = IOCompositor::new(window,
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sender,
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receiver,
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constellation_chan,
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time_profiler_chan,
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memory_profiler_chan);
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// Set the size of the root layer.
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compositor.update_zoom_transform();
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// Tell the constellation about the initial window size.
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compositor.send_window_size();
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compositor
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}
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fn handle_browser_message(&mut self, msg: Msg) -> bool {
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match (msg, self.shutdown_state) {
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(_, ShutdownState::FinishedShuttingDown) =>
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panic!("compositor shouldn't be handling messages after shutting down"),
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(Msg::Exit(chan), _) => {
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debug!("shutting down the constellation");
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let ConstellationChan(ref con_chan) = self.constellation_chan;
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con_chan.send(ConstellationMsg::Exit).unwrap();
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chan.send(()).unwrap();
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self.shutdown_state = ShutdownState::ShuttingDown;
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}
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(Msg::ShutdownComplete, _) => {
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debug!("constellation completed shutdown");
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self.shutdown_state = ShutdownState::FinishedShuttingDown;
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return false;
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}
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(Msg::ChangeReadyState(pipeline_id, ready_state), ShutdownState::NotShuttingDown) => {
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self.change_ready_state(pipeline_id, ready_state);
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}
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(Msg::ChangePaintState(pipeline_id, paint_state), ShutdownState::NotShuttingDown) => {
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self.change_paint_state(pipeline_id, paint_state);
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}
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(Msg::ChangePageTitle(pipeline_id, title), ShutdownState::NotShuttingDown) => {
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self.change_page_title(pipeline_id, title);
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}
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(Msg::ChangePageLoadData(frame_id, load_data), ShutdownState::NotShuttingDown) => {
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self.change_page_load_data(frame_id, load_data);
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}
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(Msg::PaintMsgDiscarded, ShutdownState::NotShuttingDown) => {
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self.remove_outstanding_paint_msg();
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}
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(Msg::SetFrameTree(frame_tree, response_chan, new_constellation_chan),
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ShutdownState::NotShuttingDown) => {
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self.set_frame_tree(&frame_tree,
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response_chan,
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new_constellation_chan);
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self.send_viewport_rects_for_all_layers();
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}
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(Msg::ChangeLayerPipelineAndRemoveChildren(old_pipeline, new_pipeline, response_channel),
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ShutdownState::NotShuttingDown) => {
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self.handle_change_layer_pipeline_and_remove_children(old_pipeline, new_pipeline);
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response_channel.send(()).unwrap();
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}
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(Msg::CreateRootLayerForPipeline(parent_pipeline, pipeline, rect, response_channel),
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ShutdownState::NotShuttingDown) => {
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self.handle_create_root_layer_for_pipeline(parent_pipeline, pipeline, rect);
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response_channel.send(()).unwrap();
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}
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(Msg::CreateOrUpdateBaseLayer(layer_properties), ShutdownState::NotShuttingDown) => {
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self.create_or_update_base_layer(layer_properties);
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}
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(Msg::CreateOrUpdateDescendantLayer(layer_properties),
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ShutdownState::NotShuttingDown) => {
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self.create_or_update_descendant_layer(layer_properties);
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}
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(Msg::GetGraphicsMetadata(chan), ShutdownState::NotShuttingDown) => {
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chan.send(Some(self.window.native_metadata())).unwrap();
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}
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(Msg::SetLayerOrigin(pipeline_id, layer_id, origin),
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ShutdownState::NotShuttingDown) => {
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self.set_layer_origin(pipeline_id, layer_id, origin);
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}
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(Msg::AssignPaintedBuffers(pipeline_id, epoch, replies), ShutdownState::NotShuttingDown) => {
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for (layer_id, new_layer_buffer_set) in replies.into_iter() {
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self.assign_painted_buffers(pipeline_id, layer_id, new_layer_buffer_set, epoch);
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}
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self.remove_outstanding_paint_msg();
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}
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(Msg::ScrollFragmentPoint(pipeline_id, layer_id, point),
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ShutdownState::NotShuttingDown) => {
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self.scroll_fragment_to_point(pipeline_id, layer_id, point);
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}
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(Msg::LoadComplete, ShutdownState::NotShuttingDown) => {
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self.got_load_complete_message = true;
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// If we're painting in headless mode, schedule a recomposite.
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if opts::get().output_file.is_some() {
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self.composite_if_necessary();
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}
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// Inform the embedder that the load has finished.
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//
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// TODO(pcwalton): Specify which frame's load completed.
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self.window.load_end();
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}
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(Msg::ScrollTimeout(timestamp), ShutdownState::NotShuttingDown) => {
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debug!("scroll timeout, drawing unpainted content!");
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match self.composition_request {
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CompositionRequest::CompositeOnScrollTimeout(this_timestamp) => {
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if timestamp == this_timestamp {
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self.composition_request = CompositionRequest::CompositeNow
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}
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}
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_ => {}
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}
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}
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(Msg::KeyEvent(key, state, modified), ShutdownState::NotShuttingDown) => {
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if state == KeyState::Pressed {
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self.window.handle_key(key, modified);
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}
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}
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(Msg::SetCursor(cursor), ShutdownState::NotShuttingDown) => {
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self.window.set_cursor(cursor)
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}
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(Msg::PaintTaskExited(pipeline_id), ShutdownState::NotShuttingDown) => {
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if self.pipeline_details.remove(&pipeline_id).is_none() {
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panic!("Saw PaintTaskExited message from an unknown pipeline!");
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}
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}
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// When we are shutting_down, we need to avoid performing operations
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// such as Paint that may crash because we have begun tearing down
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// the rest of our resources.
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(_, ShutdownState::ShuttingDown) => { }
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}
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true
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}
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fn change_ready_state(&mut self, pipeline_id: PipelineId, ready_state: ReadyState) {
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self.get_or_create_pipeline_details(pipeline_id).ready_state = ready_state;
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self.window.set_ready_state(self.get_earliest_pipeline_ready_state());
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// If we're painting in headless mode, schedule a recomposite.
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if opts::get().output_file.is_some() {
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self.composite_if_necessary()
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}
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}
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fn get_earliest_pipeline_ready_state(&self) -> ReadyState {
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if self.pipeline_details.len() == 0 {
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return ReadyState::Blank;
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}
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return self.pipeline_details.values().fold(ReadyState::FinishedLoading,
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|v, ref details| {
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cmp::min(v, details.ready_state)
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});
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}
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fn change_paint_state(&mut self, pipeline_id: PipelineId, paint_state: PaintState) {
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self.get_or_create_pipeline_details(pipeline_id).paint_state = paint_state;
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self.window.set_paint_state(paint_state);
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}
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pub fn get_or_create_pipeline_details<'a>(&'a mut self,
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pipeline_id: PipelineId)
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-> &'a mut PipelineDetails {
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if !self.pipeline_details.contains_key(&pipeline_id) {
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self.pipeline_details.insert(pipeline_id, PipelineDetails::new());
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}
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return self.pipeline_details.get_mut(&pipeline_id).unwrap();
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}
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pub fn get_pipeline<'a>(&'a self, pipeline_id: PipelineId) -> &'a CompositionPipeline {
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match self.pipeline_details.get(&pipeline_id) {
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Some(ref details) => {
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match details.pipeline {
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Some(ref pipeline) => pipeline,
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None => panic!("Compositor layer has an unitialized pipeline ({:?}).",
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pipeline_id),
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}
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}
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None => panic!("Compositor layer has an unknown pipeline ({:?}).", pipeline_id),
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}
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}
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fn change_page_title(&mut self, _: PipelineId, title: Option<String>) {
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self.window.set_page_title(title);
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}
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fn change_page_load_data(&mut self, _: FrameId, load_data: LoadData) {
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self.window.set_page_load_data(load_data);
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}
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fn all_pipelines_in_idle_paint_state(&self) -> bool {
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if self.pipeline_details.len() == 0 {
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return false;
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}
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return self.pipeline_details.values().all(|ref details| {
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details.paint_state == PaintState::Idle
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});
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}
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fn has_paint_msg_tracking(&self) -> bool {
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// only track PaintMsg's if the compositor outputs to a file.
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opts::get().output_file.is_some()
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}
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fn has_outstanding_paint_msgs(&self) -> bool {
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self.has_paint_msg_tracking() && self.outstanding_paint_msgs > 0
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}
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fn add_outstanding_paint_msg(&mut self, count: uint) {
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// return early if not tracking paint_msg's
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if !self.has_paint_msg_tracking() {
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return;
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}
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debug!("add_outstanding_paint_msg {:?}", self.outstanding_paint_msgs);
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self.outstanding_paint_msgs += count;
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}
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fn remove_outstanding_paint_msg(&mut self) {
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if !self.has_paint_msg_tracking() {
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return;
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}
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if self.outstanding_paint_msgs > 0 {
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self.outstanding_paint_msgs -= 1;
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} else {
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debug!("too many repaint msgs completed");
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}
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}
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fn set_frame_tree(&mut self,
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frame_tree: &SendableFrameTree,
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response_chan: Sender<()>,
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new_constellation_chan: ConstellationChan) {
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response_chan.send(()).unwrap();
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self.root_pipeline = Some(frame_tree.pipeline.clone());
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// If we have an old root layer, release all old tiles before replacing it.
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match self.scene.root {
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Some(ref layer) => layer.clear_all_tiles(self),
|
|
None => { }
|
|
}
|
|
self.scene.root = Some(self.create_frame_tree_root_layers(frame_tree, None));
|
|
self.scene.set_root_layer_size(self.window_size.as_f32());
|
|
|
|
// Initialize the new constellation channel by sending it the root window size.
|
|
self.constellation_chan = new_constellation_chan;
|
|
self.send_window_size();
|
|
|
|
self.got_set_frame_tree_message = true;
|
|
self.composite_if_necessary();
|
|
}
|
|
|
|
fn create_root_layer_for_pipeline_and_rect(&mut self,
|
|
pipeline: &CompositionPipeline,
|
|
frame_rect: Option<TypedRect<PagePx, f32>>)
|
|
-> Rc<Layer<CompositorData>> {
|
|
let layer_properties = LayerProperties {
|
|
pipeline_id: pipeline.id,
|
|
epoch: Epoch(0),
|
|
id: LayerId::null(),
|
|
rect: Rect::zero(),
|
|
background_color: color::transparent_black(),
|
|
scroll_policy: ScrollPolicy::Scrollable,
|
|
};
|
|
|
|
let root_layer = CompositorData::new_layer(layer_properties,
|
|
WantsScrollEventsFlag::WantsScrollEvents,
|
|
opts::get().tile_size);
|
|
|
|
self.get_or_create_pipeline_details(pipeline.id).pipeline = Some(pipeline.clone());
|
|
|
|
// All root layers mask to bounds.
|
|
*root_layer.masks_to_bounds.borrow_mut() = true;
|
|
|
|
if let Some(ref frame_rect) = frame_rect {
|
|
let frame_rect = frame_rect.to_untyped();
|
|
*root_layer.bounds.borrow_mut() = Rect::from_untyped(&frame_rect);
|
|
}
|
|
|
|
return root_layer;
|
|
}
|
|
|
|
fn create_frame_tree_root_layers(&mut self,
|
|
frame_tree: &SendableFrameTree,
|
|
frame_rect: Option<TypedRect<PagePx, f32>>)
|
|
-> Rc<Layer<CompositorData>> {
|
|
let root_layer = self.create_root_layer_for_pipeline_and_rect(&frame_tree.pipeline,
|
|
frame_rect);
|
|
for kid in frame_tree.children.iter() {
|
|
root_layer.add_child(self.create_frame_tree_root_layers(&kid.frame_tree, kid.rect));
|
|
}
|
|
return root_layer;
|
|
}
|
|
|
|
fn handle_change_layer_pipeline_and_remove_children(&mut self,
|
|
old_pipeline: CompositionPipeline,
|
|
new_pipeline: CompositionPipeline) {
|
|
let root_layer = match self.find_pipeline_root_layer(old_pipeline.id) {
|
|
Some(root_layer) => root_layer,
|
|
None => {
|
|
debug!("Ignoring ChangeLayerPipelineAndRemoveChildren message \
|
|
for pipeline ({:?}) shutting down.",
|
|
old_pipeline.id);
|
|
return;
|
|
}
|
|
};
|
|
|
|
root_layer.clear_all_tiles(self);
|
|
root_layer.children().clear();
|
|
|
|
debug_assert!(root_layer.extra_data.borrow().pipeline_id == old_pipeline.id);
|
|
root_layer.extra_data.borrow_mut().pipeline_id = new_pipeline.id;
|
|
|
|
let new_pipeline_id = new_pipeline.id;
|
|
self.get_or_create_pipeline_details(new_pipeline_id).pipeline = Some(new_pipeline);
|
|
}
|
|
|
|
fn handle_create_root_layer_for_pipeline(&mut self,
|
|
parent_pipeline: CompositionPipeline,
|
|
new_pipeline: CompositionPipeline,
|
|
frame_rect: Option<TypedRect<PagePx, f32>>) {
|
|
let root_layer = self.create_root_layer_for_pipeline_and_rect(&new_pipeline, frame_rect);
|
|
match frame_rect {
|
|
Some(ref frame_rect) => {
|
|
*root_layer.masks_to_bounds.borrow_mut() = true;
|
|
|
|
let frame_rect = frame_rect.to_untyped();
|
|
*root_layer.bounds.borrow_mut() = Rect::from_untyped(&frame_rect);
|
|
}
|
|
None => {}
|
|
}
|
|
|
|
let pipeline_id = parent_pipeline.id;
|
|
let parent_layer = match self.find_pipeline_root_layer(pipeline_id) {
|
|
Some(root_layer) => root_layer,
|
|
None => {
|
|
debug!("Ignoring FrameTreeUpdate message for pipeline ({:?}) \
|
|
shutting down.",
|
|
pipeline_id);
|
|
return;
|
|
}
|
|
};
|
|
parent_layer.add_child(root_layer);
|
|
}
|
|
|
|
fn find_pipeline_root_layer(&self, pipeline_id: PipelineId) -> Option<Rc<Layer<CompositorData>>> {
|
|
if !self.pipeline_details.contains_key(&pipeline_id) {
|
|
panic!("Tried to create or update layer for unknown pipeline")
|
|
}
|
|
self.find_layer_with_pipeline_and_layer_id(pipeline_id, LayerId::null())
|
|
}
|
|
|
|
fn update_layer_if_exists(&mut self, properties: LayerProperties) -> bool {
|
|
match self.find_layer_with_pipeline_and_layer_id(properties.pipeline_id, properties.id) {
|
|
Some(existing_layer) => {
|
|
existing_layer.update_layer(properties);
|
|
true
|
|
}
|
|
None => false,
|
|
}
|
|
}
|
|
|
|
fn create_or_update_base_layer(&mut self, layer_properties: LayerProperties) {
|
|
let pipeline_id = layer_properties.pipeline_id;
|
|
let root_layer = match self.find_pipeline_root_layer(pipeline_id) {
|
|
Some(root_layer) => root_layer,
|
|
None => {
|
|
debug!("Ignoring CreateOrUpdateBaseLayer message for pipeline \
|
|
({:?}) shutting down.",
|
|
pipeline_id);
|
|
return;
|
|
}
|
|
};
|
|
|
|
let need_new_base_layer = !self.update_layer_if_exists(layer_properties);
|
|
if need_new_base_layer {
|
|
root_layer.update_layer_except_bounds(layer_properties);
|
|
|
|
let base_layer = CompositorData::new_layer(
|
|
layer_properties,
|
|
WantsScrollEventsFlag::DoesntWantScrollEvents,
|
|
opts::get().tile_size);
|
|
|
|
// Add the base layer to the front of the child list, so that child
|
|
// iframe layers are painted on top of the base layer. These iframe
|
|
// layers were added previously when creating the layer tree
|
|
// skeleton in create_frame_tree_root_layers.
|
|
root_layer.children().insert(0, base_layer);
|
|
}
|
|
|
|
self.scroll_layer_to_fragment_point_if_necessary(layer_properties.pipeline_id,
|
|
layer_properties.id);
|
|
self.send_buffer_requests_for_all_layers();
|
|
}
|
|
|
|
fn create_or_update_descendant_layer(&mut self, layer_properties: LayerProperties) {
|
|
if !self.update_layer_if_exists(layer_properties) {
|
|
self.create_descendant_layer(layer_properties);
|
|
}
|
|
self.scroll_layer_to_fragment_point_if_necessary(layer_properties.pipeline_id,
|
|
layer_properties.id);
|
|
self.send_buffer_requests_for_all_layers();
|
|
}
|
|
|
|
fn create_descendant_layer(&self, layer_properties: LayerProperties) {
|
|
let root_layer = match self.find_pipeline_root_layer(layer_properties.pipeline_id) {
|
|
Some(root_layer) => root_layer,
|
|
None => return, // This pipeline is in the process of shutting down.
|
|
};
|
|
|
|
let new_layer = CompositorData::new_layer(layer_properties,
|
|
WantsScrollEventsFlag::DoesntWantScrollEvents,
|
|
root_layer.tile_size);
|
|
root_layer.add_child(new_layer);
|
|
}
|
|
|
|
fn send_window_size(&self) {
|
|
let dppx = self.page_zoom * self.device_pixels_per_screen_px();
|
|
let initial_viewport = self.window_size.as_f32() / dppx;
|
|
let visible_viewport = initial_viewport / self.viewport_zoom;
|
|
|
|
let ConstellationChan(ref chan) = self.constellation_chan;
|
|
chan.send(ConstellationMsg::ResizedWindow(WindowSizeData {
|
|
device_pixel_ratio: dppx,
|
|
initial_viewport: initial_viewport,
|
|
visible_viewport: visible_viewport,
|
|
})).unwrap()
|
|
}
|
|
|
|
pub fn move_layer(&self,
|
|
pipeline_id: PipelineId,
|
|
layer_id: LayerId,
|
|
origin: TypedPoint2D<LayerPixel, f32>)
|
|
-> bool {
|
|
match self.find_layer_with_pipeline_and_layer_id(pipeline_id, layer_id) {
|
|
Some(ref layer) => {
|
|
if layer.wants_scroll_events() == WantsScrollEventsFlag::WantsScrollEvents {
|
|
layer.clamp_scroll_offset_and_scroll_layer(TypedPoint2D(0f32, 0f32) - origin);
|
|
}
|
|
true
|
|
}
|
|
None => false,
|
|
}
|
|
}
|
|
|
|
fn scroll_layer_to_fragment_point_if_necessary(&mut self,
|
|
pipeline_id: PipelineId,
|
|
layer_id: LayerId) {
|
|
match self.fragment_point.take() {
|
|
Some(point) => {
|
|
if !self.move_layer(pipeline_id, layer_id, Point2D::from_untyped(&point)) {
|
|
panic!("Compositor: Tried to scroll to fragment with unknown layer.");
|
|
}
|
|
|
|
self.start_scrolling_timer_if_necessary();
|
|
}
|
|
None => {}
|
|
}
|
|
}
|
|
|
|
fn start_scrolling_timer_if_necessary(&mut self) {
|
|
match self.composition_request {
|
|
CompositionRequest::CompositeNow | CompositionRequest::CompositeOnScrollTimeout(_) =>
|
|
return,
|
|
CompositionRequest::NoCompositingNecessary => {}
|
|
}
|
|
|
|
let timestamp = precise_time_ns();
|
|
self.scrolling_timer.scroll_event_processed(timestamp);
|
|
self.composition_request = CompositionRequest::CompositeOnScrollTimeout(timestamp);
|
|
}
|
|
|
|
fn set_layer_origin(&mut self,
|
|
pipeline_id: PipelineId,
|
|
layer_id: LayerId,
|
|
new_origin: Point2D<f32>) {
|
|
match self.find_layer_with_pipeline_and_layer_id(pipeline_id, layer_id) {
|
|
Some(ref layer) => {
|
|
layer.bounds.borrow_mut().origin = Point2D::from_untyped(&new_origin)
|
|
}
|
|
None => panic!("Compositor received SetLayerOrigin for nonexistent \
|
|
layer: {:?}", pipeline_id),
|
|
};
|
|
|
|
self.send_buffer_requests_for_all_layers();
|
|
}
|
|
|
|
fn assign_painted_buffers(&mut self,
|
|
pipeline_id: PipelineId,
|
|
layer_id: LayerId,
|
|
new_layer_buffer_set: Box<LayerBufferSet>,
|
|
epoch: Epoch) {
|
|
match self.find_layer_with_pipeline_and_layer_id(pipeline_id, layer_id) {
|
|
Some(layer) => {
|
|
self.assign_painted_buffers_to_layer(layer, new_layer_buffer_set, epoch);
|
|
return;
|
|
}
|
|
None => {}
|
|
}
|
|
|
|
let pipeline = self.get_pipeline(pipeline_id);
|
|
let message = PaintMsg::UnusedBuffer(new_layer_buffer_set.buffers);
|
|
let _ = pipeline.paint_chan.send(message);
|
|
}
|
|
|
|
fn assign_painted_buffers_to_layer(&mut self,
|
|
layer: Rc<Layer<CompositorData>>,
|
|
new_layer_buffer_set: Box<LayerBufferSet>,
|
|
epoch: Epoch) {
|
|
debug!("compositor received new frame at size {:?}x{:?}",
|
|
self.window_size.width.get(),
|
|
self.window_size.height.get());
|
|
|
|
// From now on, if we destroy the buffers, they will leak.
|
|
let mut new_layer_buffer_set = new_layer_buffer_set;
|
|
new_layer_buffer_set.mark_will_leak();
|
|
|
|
// FIXME(pcwalton): This is going to cause problems with inconsistent frames since
|
|
// we only composite one layer at a time.
|
|
assert!(layer.add_buffers(self, new_layer_buffer_set, epoch));
|
|
self.composite_if_necessary();
|
|
}
|
|
|
|
fn scroll_fragment_to_point(&mut self,
|
|
pipeline_id: PipelineId,
|
|
layer_id: LayerId,
|
|
point: Point2D<f32>) {
|
|
if self.move_layer(pipeline_id, layer_id, Point2D::from_untyped(&point)) {
|
|
if self.send_buffer_requests_for_all_layers() {
|
|
self.start_scrolling_timer_if_necessary();
|
|
}
|
|
} else {
|
|
self.fragment_point = Some(point);
|
|
}
|
|
}
|
|
|
|
fn handle_window_message(&mut self, event: WindowEvent) {
|
|
match event {
|
|
WindowEvent::Idle => {}
|
|
|
|
WindowEvent::Refresh => {
|
|
self.composite();
|
|
}
|
|
|
|
WindowEvent::InitializeCompositing => {
|
|
self.initialize_compositing();
|
|
}
|
|
|
|
WindowEvent::Resize(size) => {
|
|
self.on_resize_window_event(size);
|
|
}
|
|
|
|
WindowEvent::LoadUrl(url_string) => {
|
|
self.on_load_url_window_event(url_string);
|
|
}
|
|
|
|
WindowEvent::MouseWindowEventClass(mouse_window_event) => {
|
|
self.on_mouse_window_event_class(mouse_window_event);
|
|
}
|
|
|
|
WindowEvent::MouseWindowMoveEventClass(cursor) => {
|
|
self.on_mouse_window_move_event_class(cursor);
|
|
}
|
|
|
|
WindowEvent::Scroll(delta, cursor) => {
|
|
self.on_scroll_window_event(delta, cursor);
|
|
}
|
|
|
|
WindowEvent::Zoom(magnification) => {
|
|
self.on_zoom_window_event(magnification);
|
|
}
|
|
|
|
WindowEvent::PinchZoom(magnification) => {
|
|
self.on_pinch_zoom_window_event(magnification);
|
|
}
|
|
|
|
WindowEvent::Navigation(direction) => {
|
|
self.on_navigation_window_event(direction);
|
|
}
|
|
|
|
WindowEvent::KeyEvent(key, state, modifiers) => {
|
|
self.on_key_event(key, state, modifiers);
|
|
}
|
|
|
|
WindowEvent::Quit => {
|
|
debug!("shutting down the constellation for WindowEvent::Quit");
|
|
let ConstellationChan(ref chan) = self.constellation_chan;
|
|
chan.send(ConstellationMsg::Exit).unwrap();
|
|
self.shutdown_state = ShutdownState::ShuttingDown;
|
|
}
|
|
}
|
|
}
|
|
|
|
fn on_resize_window_event(&mut self, new_size: TypedSize2D<DevicePixel, u32>) {
|
|
debug!("compositor resizing to {:?}", new_size.to_untyped());
|
|
|
|
// A size change could also mean a resolution change.
|
|
let new_hidpi_factor = self.window.hidpi_factor();
|
|
if self.hidpi_factor != new_hidpi_factor {
|
|
self.hidpi_factor = new_hidpi_factor;
|
|
self.update_zoom_transform();
|
|
}
|
|
|
|
if self.window_size == new_size {
|
|
return;
|
|
}
|
|
|
|
self.window_size = new_size;
|
|
|
|
self.scene.set_root_layer_size(new_size.as_f32());
|
|
self.send_window_size();
|
|
}
|
|
|
|
fn on_load_url_window_event(&mut self, url_string: String) {
|
|
debug!("osmain: loading URL `{}`", url_string);
|
|
self.got_load_complete_message = false;
|
|
let root_pipeline_id = match self.scene.root {
|
|
Some(ref layer) => layer.get_pipeline_id(),
|
|
None => panic!("Compositor: Received WindowEvent::LoadUrl without initialized compositor \
|
|
layers"),
|
|
};
|
|
|
|
let msg = ConstellationMsg::LoadUrl(root_pipeline_id,
|
|
LoadData::new(Url::parse(url_string.as_slice()).unwrap()));
|
|
let ConstellationChan(ref chan) = self.constellation_chan;
|
|
chan.send(msg).unwrap()
|
|
}
|
|
|
|
fn on_mouse_window_event_class(&self, mouse_window_event: MouseWindowEvent) {
|
|
let point = match mouse_window_event {
|
|
MouseWindowEvent::Click(_, p) => p,
|
|
MouseWindowEvent::MouseDown(_, p) => p,
|
|
MouseWindowEvent::MouseUp(_, p) => p,
|
|
};
|
|
match self.find_topmost_layer_at_point(point / self.scene.scale) {
|
|
Some(result) => result.layer.send_mouse_event(self, mouse_window_event, result.point),
|
|
None => {},
|
|
}
|
|
}
|
|
|
|
fn on_mouse_window_move_event_class(&self, cursor: TypedPoint2D<DevicePixel, f32>) {
|
|
match self.find_topmost_layer_at_point(cursor / self.scene.scale) {
|
|
Some(result) => result.layer.send_mouse_move_event(self, result.point),
|
|
None => {},
|
|
}
|
|
}
|
|
|
|
fn on_scroll_window_event(&mut self,
|
|
delta: TypedPoint2D<DevicePixel, f32>,
|
|
cursor: TypedPoint2D<DevicePixel, i32>) {
|
|
self.pending_scroll_events.push(ScrollEvent {
|
|
delta: delta,
|
|
cursor: cursor,
|
|
});
|
|
|
|
self.composite_if_necessary();
|
|
}
|
|
|
|
fn process_pending_scroll_events(&mut self) {
|
|
let had_scroll_events = self.pending_scroll_events.len() > 0;
|
|
for scroll_event in mem::replace(&mut self.pending_scroll_events, Vec::new()).into_iter() {
|
|
let delta = scroll_event.delta / self.scene.scale;
|
|
let cursor = scroll_event.cursor.as_f32() / self.scene.scale;
|
|
|
|
match self.scene.root {
|
|
Some(ref mut layer) => {
|
|
layer.handle_scroll_event(delta, cursor);
|
|
}
|
|
None => {}
|
|
}
|
|
|
|
self.start_scrolling_timer_if_necessary();
|
|
self.send_buffer_requests_for_all_layers();
|
|
}
|
|
|
|
if had_scroll_events {
|
|
self.send_viewport_rects_for_all_layers();
|
|
}
|
|
}
|
|
|
|
fn device_pixels_per_screen_px(&self) -> ScaleFactor<ScreenPx, DevicePixel, f32> {
|
|
match opts::get().device_pixels_per_px {
|
|
Some(device_pixels_per_px) => device_pixels_per_px,
|
|
None => match opts::get().output_file {
|
|
Some(_) => ScaleFactor(1.0),
|
|
None => self.hidpi_factor
|
|
}
|
|
}
|
|
}
|
|
|
|
fn device_pixels_per_page_px(&self) -> ScaleFactor<PagePx, DevicePixel, f32> {
|
|
self.viewport_zoom * self.page_zoom * self.device_pixels_per_screen_px()
|
|
}
|
|
|
|
fn update_zoom_transform(&mut self) {
|
|
let scale = self.device_pixels_per_page_px();
|
|
self.scene.scale = ScaleFactor(scale.get());
|
|
|
|
// We need to set the size of the root layer again, since the window size
|
|
// has changed in unscaled layer pixels.
|
|
self.scene.set_root_layer_size(self.window_size.as_f32());
|
|
}
|
|
|
|
fn on_zoom_window_event(&mut self, magnification: f32) {
|
|
self.page_zoom = ScaleFactor((self.page_zoom.get() * magnification).max(1.0));
|
|
self.update_zoom_transform();
|
|
self.send_window_size();
|
|
}
|
|
|
|
// TODO(pcwalton): I think this should go through the same queuing as scroll events do.
|
|
fn on_pinch_zoom_window_event(&mut self, magnification: f32) {
|
|
self.zoom_action = true;
|
|
self.zoom_time = precise_time_s();
|
|
let old_viewport_zoom = self.viewport_zoom;
|
|
|
|
self.viewport_zoom = ScaleFactor((self.viewport_zoom.get() * magnification).max(1.0));
|
|
let viewport_zoom = self.viewport_zoom;
|
|
|
|
self.update_zoom_transform();
|
|
|
|
// Scroll as needed
|
|
let window_size = self.window_size.as_f32();
|
|
let page_delta: TypedPoint2D<LayerPixel, f32> = TypedPoint2D(
|
|
window_size.width.get() * (viewport_zoom.inv() - old_viewport_zoom.inv()).get() * 0.5,
|
|
window_size.height.get() * (viewport_zoom.inv() - old_viewport_zoom.inv()).get() * 0.5);
|
|
|
|
let cursor = TypedPoint2D(-1f32, -1f32); // Make sure this hits the base layer.
|
|
match self.scene.root {
|
|
Some(ref mut layer) => {
|
|
layer.handle_scroll_event(page_delta, cursor);
|
|
}
|
|
None => { }
|
|
}
|
|
|
|
self.send_viewport_rects_for_all_layers();
|
|
self.composite_if_necessary();
|
|
}
|
|
|
|
fn on_navigation_window_event(&self, direction: WindowNavigateMsg) {
|
|
let direction = match direction {
|
|
windowing::WindowNavigateMsg::Forward => NavigationDirection::Forward,
|
|
windowing::WindowNavigateMsg::Back => NavigationDirection::Back,
|
|
};
|
|
let ConstellationChan(ref chan) = self.constellation_chan;
|
|
chan.send(ConstellationMsg::Navigate(direction)).unwrap()
|
|
}
|
|
|
|
fn on_key_event(&self, key: Key, state: KeyState, modifiers: KeyModifiers) {
|
|
let ConstellationChan(ref chan) = self.constellation_chan;
|
|
chan.send(ConstellationMsg::KeyEvent(key, state, modifiers)).unwrap()
|
|
}
|
|
|
|
fn convert_buffer_requests_to_pipeline_requests_map(&self,
|
|
requests: Vec<(Rc<Layer<CompositorData>>,
|
|
Vec<BufferRequest>)>)
|
|
-> HashMap<PipelineId, Vec<PaintRequest>> {
|
|
let scale = self.device_pixels_per_page_px();
|
|
let mut results: HashMap<PipelineId, Vec<PaintRequest>> = HashMap::new();
|
|
|
|
for (layer, mut layer_requests) in requests.into_iter() {
|
|
let vec = match results.entry(layer.get_pipeline_id()) {
|
|
Occupied(mut entry) => {
|
|
*entry.get_mut() = Vec::new();
|
|
entry.into_mut()
|
|
}
|
|
Vacant(entry) => {
|
|
entry.insert(Vec::new())
|
|
}
|
|
};
|
|
|
|
// All the BufferRequests are in layer/device coordinates, but the paint task
|
|
// wants to know the page coordinates. We scale them before sending them.
|
|
for request in layer_requests.iter_mut() {
|
|
request.page_rect = request.page_rect / scale.get();
|
|
}
|
|
|
|
vec.push(PaintRequest {
|
|
buffer_requests: layer_requests,
|
|
scale: scale.get(),
|
|
layer_id: layer.extra_data.borrow().id,
|
|
epoch: layer.extra_data.borrow().epoch,
|
|
});
|
|
}
|
|
|
|
return results;
|
|
}
|
|
|
|
fn send_back_unused_buffers(&mut self,
|
|
unused_buffers: Vec<(Rc<Layer<CompositorData>>,
|
|
Vec<Box<LayerBuffer>>)>) {
|
|
for (layer, buffers) in unused_buffers.into_iter() {
|
|
let pipeline = self.get_pipeline(layer.get_pipeline_id());
|
|
let _ = pipeline.paint_chan.send_opt(PaintMsg::UnusedBuffer(buffers));
|
|
}
|
|
}
|
|
|
|
fn send_viewport_rect_for_layer(&self, layer: Rc<Layer<CompositorData>>) {
|
|
if layer.extra_data.borrow().id == LayerId::null() {
|
|
let layer_rect = Rect(-layer.extra_data.borrow().scroll_offset.to_untyped(),
|
|
layer.bounds.borrow().size.to_untyped());
|
|
let pipeline = self.get_pipeline(layer.get_pipeline_id());
|
|
let ScriptControlChan(ref chan) = pipeline.script_chan;
|
|
chan.send(ConstellationControlMsg::Viewport(pipeline.id.clone(), layer_rect)).unwrap();
|
|
}
|
|
|
|
for kid in layer.children().iter() {
|
|
self.send_viewport_rect_for_layer(kid.clone());
|
|
}
|
|
}
|
|
|
|
fn send_viewport_rects_for_all_layers(&self) {
|
|
match self.scene.root {
|
|
Some(ref root) => self.send_viewport_rect_for_layer(root.clone()),
|
|
None => {},
|
|
}
|
|
}
|
|
|
|
/// Returns true if any buffer requests were sent or false otherwise.
|
|
fn send_buffer_requests_for_all_layers(&mut self) -> bool {
|
|
let mut layers_and_requests = Vec::new();
|
|
let mut unused_buffers = Vec::new();
|
|
self.scene.get_buffer_requests(&mut layers_and_requests, &mut unused_buffers);
|
|
|
|
// Return unused tiles first, so that they can be reused by any new BufferRequests.
|
|
self.send_back_unused_buffers(unused_buffers);
|
|
|
|
if layers_and_requests.len() == 0 {
|
|
return false;
|
|
}
|
|
|
|
// We want to batch requests for each pipeline to avoid race conditions
|
|
// when handling the resulting BufferRequest responses.
|
|
let pipeline_requests =
|
|
self.convert_buffer_requests_to_pipeline_requests_map(layers_and_requests);
|
|
|
|
let mut num_paint_msgs_sent = 0;
|
|
for (pipeline_id, requests) in pipeline_requests.into_iter() {
|
|
num_paint_msgs_sent += 1;
|
|
let _ = self.get_pipeline(pipeline_id).paint_chan.send(PaintMsg::Paint(requests));
|
|
}
|
|
|
|
self.add_outstanding_paint_msg(num_paint_msgs_sent);
|
|
true
|
|
}
|
|
|
|
fn is_ready_to_paint_image_output(&self) -> bool {
|
|
if !self.got_load_complete_message {
|
|
return false;
|
|
}
|
|
|
|
if self.get_earliest_pipeline_ready_state() != ReadyState::FinishedLoading {
|
|
return false;
|
|
}
|
|
|
|
if self.has_outstanding_paint_msgs() {
|
|
return false;
|
|
}
|
|
|
|
if !self.all_pipelines_in_idle_paint_state() {
|
|
return false;
|
|
}
|
|
|
|
if !self.got_set_frame_tree_message {
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
fn composite(&mut self) {
|
|
if !self.window.prepare_for_composite() {
|
|
return
|
|
}
|
|
|
|
let output_image = opts::get().output_file.is_some() &&
|
|
self.is_ready_to_paint_image_output();
|
|
|
|
let mut framebuffer_ids = vec!();
|
|
let mut texture_ids = vec!();
|
|
let (width, height) = (self.window_size.width.get() as usize, self.window_size.height.get() as usize);
|
|
|
|
if output_image {
|
|
framebuffer_ids = gl::gen_framebuffers(1);
|
|
gl::bind_framebuffer(gl::FRAMEBUFFER, framebuffer_ids[0]);
|
|
|
|
texture_ids = gl::gen_textures(1);
|
|
gl::bind_texture(gl::TEXTURE_2D, texture_ids[0]);
|
|
|
|
gl::tex_image_2d(gl::TEXTURE_2D, 0, gl::RGB as GLint, width as GLsizei,
|
|
height as GLsizei, 0, gl::RGB, gl::UNSIGNED_BYTE, None);
|
|
gl::tex_parameter_i(gl::TEXTURE_2D, gl::TEXTURE_MAG_FILTER, gl::NEAREST as GLint);
|
|
gl::tex_parameter_i(gl::TEXTURE_2D, gl::TEXTURE_MIN_FILTER, gl::NEAREST as GLint);
|
|
|
|
gl::framebuffer_texture_2d(gl::FRAMEBUFFER, gl::COLOR_ATTACHMENT0, gl::TEXTURE_2D,
|
|
texture_ids[0], 0);
|
|
|
|
gl::bind_texture(gl::TEXTURE_2D, 0);
|
|
}
|
|
|
|
profile(TimeProfilerCategory::Compositing, None, self.time_profiler_chan.clone(), || {
|
|
debug!("compositor: compositing");
|
|
// Adjust the layer dimensions as necessary to correspond to the size of the window.
|
|
self.scene.viewport = Rect {
|
|
origin: Point2D::zero(),
|
|
size: self.window_size.as_f32(),
|
|
};
|
|
// paint the scene.
|
|
match self.scene.root {
|
|
Some(ref layer) => {
|
|
match self.context {
|
|
None => {
|
|
debug!("compositor: not compositing because context not yet set up")
|
|
}
|
|
Some(context) => {
|
|
rendergl::render_scene(layer.clone(), context, &self.scene);
|
|
}
|
|
}
|
|
}
|
|
None => {}
|
|
}
|
|
});
|
|
|
|
if output_image {
|
|
let path: Path =
|
|
opts::get().output_file.as_ref().unwrap().as_slice().parse().unwrap();
|
|
let mut pixels = gl::read_pixels(0, 0,
|
|
width as gl::GLsizei,
|
|
height as gl::GLsizei,
|
|
gl::RGB, gl::UNSIGNED_BYTE);
|
|
|
|
gl::bind_framebuffer(gl::FRAMEBUFFER, 0);
|
|
|
|
gl::delete_buffers(texture_ids.as_slice());
|
|
gl::delete_frame_buffers(framebuffer_ids.as_slice());
|
|
|
|
// flip image vertically (texture is upside down)
|
|
let orig_pixels = pixels.clone();
|
|
let stride = width * 3;
|
|
for y in range(0, height) {
|
|
let dst_start = y * stride;
|
|
let src_start = (height - y - 1) * stride;
|
|
let src_slice = &orig_pixels[src_start .. src_start + stride];
|
|
copy_memory(&mut pixels[dst_start .. dst_start + stride],
|
|
&src_slice[..stride]);
|
|
}
|
|
let mut img = png::Image {
|
|
width: width as u32,
|
|
height: height as u32,
|
|
pixels: png::PixelsByColorType::RGB8(pixels),
|
|
};
|
|
let res = png::store_png(&mut img, &path);
|
|
assert!(res.is_ok());
|
|
|
|
debug!("shutting down the constellation after generating an output file");
|
|
let ConstellationChan(ref chan) = self.constellation_chan;
|
|
chan.send(ConstellationMsg::Exit).unwrap();
|
|
self.shutdown_state = ShutdownState::ShuttingDown;
|
|
}
|
|
|
|
// Perform the page flip. This will likely block for a while.
|
|
self.window.present();
|
|
|
|
self.last_composite_time = precise_time_ns();
|
|
|
|
self.composition_request = CompositionRequest::NoCompositingNecessary;
|
|
self.process_pending_scroll_events();
|
|
}
|
|
|
|
fn composite_if_necessary(&mut self) {
|
|
if self.composition_request == CompositionRequest::NoCompositingNecessary {
|
|
self.composition_request = CompositionRequest::CompositeNow
|
|
}
|
|
}
|
|
|
|
fn initialize_compositing(&mut self) {
|
|
let context = CompositorTask::create_graphics_context(&self.window.native_metadata());
|
|
let show_debug_borders = opts::get().show_debug_borders;
|
|
self.context = Some(rendergl::RenderContext::new(context, show_debug_borders))
|
|
}
|
|
|
|
fn find_topmost_layer_at_point_for_layer(&self,
|
|
layer: Rc<Layer<CompositorData>>,
|
|
point: TypedPoint2D<LayerPixel, f32>,
|
|
clip_rect: &TypedRect<LayerPixel, f32>)
|
|
-> Option<HitTestResult> {
|
|
let layer_bounds = *layer.bounds.borrow();
|
|
let masks_to_bounds = *layer.masks_to_bounds.borrow();
|
|
if layer_bounds.is_empty() && masks_to_bounds {
|
|
return None;
|
|
}
|
|
|
|
let clipped_layer_bounds = match clip_rect.intersection(&layer_bounds) {
|
|
Some(rect) => rect,
|
|
None => return None,
|
|
};
|
|
|
|
let clip_rect_for_children = if masks_to_bounds {
|
|
Rect(Point2D::zero(), clipped_layer_bounds.size)
|
|
} else {
|
|
clipped_layer_bounds.translate(&clip_rect.origin)
|
|
};
|
|
|
|
let child_point = point - layer_bounds.origin;
|
|
for child in layer.children().iter().rev() {
|
|
// Translate the clip rect into the child's coordinate system.
|
|
let clip_rect_for_child =
|
|
clip_rect_for_children.translate(&-*child.content_offset.borrow());
|
|
let result = self.find_topmost_layer_at_point_for_layer(child.clone(),
|
|
child_point,
|
|
&clip_rect_for_child);
|
|
if result.is_some() {
|
|
return result;
|
|
}
|
|
}
|
|
|
|
let point = point - *layer.content_offset.borrow();
|
|
if !clipped_layer_bounds.contains(&point) {
|
|
return None;
|
|
}
|
|
|
|
return Some(HitTestResult { layer: layer, point: point });
|
|
}
|
|
|
|
fn find_topmost_layer_at_point(&self,
|
|
point: TypedPoint2D<LayerPixel, f32>)
|
|
-> Option<HitTestResult> {
|
|
match self.scene.root {
|
|
Some(ref layer) => {
|
|
self.find_topmost_layer_at_point_for_layer(layer.clone(),
|
|
point,
|
|
&*layer.bounds.borrow())
|
|
}
|
|
|
|
None => None,
|
|
}
|
|
}
|
|
|
|
fn find_layer_with_pipeline_and_layer_id(&self,
|
|
pipeline_id: PipelineId,
|
|
layer_id: LayerId)
|
|
-> Option<Rc<Layer<CompositorData>>> {
|
|
match self.scene.root {
|
|
Some(ref layer) =>
|
|
find_layer_with_pipeline_and_layer_id_for_layer(layer.clone(),
|
|
pipeline_id,
|
|
layer_id),
|
|
|
|
None => None,
|
|
}
|
|
}
|
|
}
|
|
|
|
fn find_layer_with_pipeline_and_layer_id_for_layer(layer: Rc<Layer<CompositorData>>,
|
|
pipeline_id: PipelineId,
|
|
layer_id: LayerId)
|
|
-> Option<Rc<Layer<CompositorData>>> {
|
|
if layer.extra_data.borrow().pipeline_id == pipeline_id &&
|
|
layer.extra_data.borrow().id == layer_id {
|
|
return Some(layer);
|
|
}
|
|
|
|
for kid in layer.children().iter() {
|
|
let result = find_layer_with_pipeline_and_layer_id_for_layer(kid.clone(),
|
|
pipeline_id,
|
|
layer_id);
|
|
if result.is_some() {
|
|
return result;
|
|
}
|
|
}
|
|
|
|
return None;
|
|
}
|
|
|
|
impl<Window> CompositorEventListener for IOCompositor<Window> where Window: WindowMethods {
|
|
fn handle_event(&mut self, msg: WindowEvent) -> bool {
|
|
// Check for new messages coming from the other tasks in the system.
|
|
loop {
|
|
match self.port.try_recv_compositor_msg() {
|
|
None => break,
|
|
Some(msg) => {
|
|
if !self.handle_browser_message(msg) {
|
|
break
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if self.shutdown_state == ShutdownState::FinishedShuttingDown {
|
|
// We have exited the compositor and passing window
|
|
// messages to script may crash.
|
|
debug!("Exiting the compositor due to a request from script.");
|
|
return false;
|
|
}
|
|
|
|
// Handle the message coming from the windowing system.
|
|
self.handle_window_message(msg);
|
|
|
|
// If a pinch-zoom happened recently, ask for tiles at the new resolution
|
|
if self.zoom_action && precise_time_s() - self.zoom_time > 0.3 {
|
|
self.zoom_action = false;
|
|
self.scene.mark_layer_contents_as_changed_recursively();
|
|
self.send_buffer_requests_for_all_layers();
|
|
}
|
|
|
|
match self.composition_request {
|
|
CompositionRequest::NoCompositingNecessary | CompositionRequest::CompositeOnScrollTimeout(_) => {}
|
|
CompositionRequest::CompositeNow => self.composite(),
|
|
}
|
|
|
|
self.shutdown_state != ShutdownState::FinishedShuttingDown
|
|
}
|
|
|
|
/// Repaints and recomposites synchronously. You must be careful when calling this, as if a
|
|
/// paint is not scheduled the compositor will hang forever.
|
|
///
|
|
/// This is used when resizing the window.
|
|
fn repaint_synchronously(&mut self) {
|
|
while self.shutdown_state != ShutdownState::ShuttingDown {
|
|
let msg = self.port.recv_compositor_msg();
|
|
let received_new_buffers = match msg {
|
|
Msg::AssignPaintedBuffers(..) => true,
|
|
_ => false,
|
|
};
|
|
let keep_going = self.handle_browser_message(msg);
|
|
if received_new_buffers {
|
|
self.composite();
|
|
break
|
|
}
|
|
if !keep_going {
|
|
break
|
|
}
|
|
}
|
|
}
|
|
|
|
fn shutdown(&mut self) {
|
|
// Clear out the compositor layers so that painting tasks can destroy the buffers.
|
|
match self.scene.root {
|
|
None => {}
|
|
Some(ref layer) => layer.forget_all_tiles(),
|
|
}
|
|
|
|
// Drain compositor port, sometimes messages contain channels that are blocking
|
|
// another task from finishing (i.e. SetFrameTree).
|
|
while self.port.try_recv_compositor_msg().is_some() {}
|
|
|
|
// Tell the profiler, memory profiler, and scrolling timer to shut down.
|
|
let TimeProfilerChan(ref time_profiler_chan) = self.time_profiler_chan;
|
|
time_profiler_chan.send(time::TimeProfilerMsg::Exit).unwrap();
|
|
|
|
let MemoryProfilerChan(ref memory_profiler_chan) = self.memory_profiler_chan;
|
|
memory_profiler_chan.send(memory::MemoryProfilerMsg::Exit).unwrap();
|
|
|
|
self.scrolling_timer.shutdown();
|
|
}
|
|
|
|
fn pinch_zoom_level(&self) -> f32 {
|
|
self.viewport_zoom.get() as f32
|
|
}
|
|
|
|
fn get_title_for_main_frame(&self) {
|
|
let root_pipeline_id = match self.root_pipeline {
|
|
None => return,
|
|
Some(ref root_pipeline) => root_pipeline.id,
|
|
};
|
|
let ConstellationChan(ref chan) = self.constellation_chan;
|
|
chan.send(ConstellationMsg::GetPipelineTitle(root_pipeline_id)).unwrap();
|
|
}
|
|
}
|