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Properly size root layers

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Root layers should be sized to their frame rectangles and the root of
the root layers should track the window size. This is important because
layers need to be properly sized to scroll.
This commit is contained in:
Martin Robinson 2014-09-23 16:26:37 -07:00
parent 6bbde703c1
commit 80433f7ea0
3 changed files with 32 additions and 21 deletions
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31
components/compositing/compositor.rs
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@ -24,7 +24,7 @@ use azure::azure_hl;
use std::cmp;
use std::time::duration::Duration;
use geom::point::{Point2D, TypedPoint2D};
use geom::rect::Rect;
use geom::rect::{Rect, TypedRect};
use geom::size::TypedSize2D;
use geom::scale_factor::ScaleFactor;
use gfx::render_task::{RenderChan, RenderMsg, RenderRequest, UnusedBufferMsg};
@ -413,7 +413,8 @@ impl IOCompositor {
Some(ref mut layer) => CompositorData::clear_all_tiles(layer.clone()),
None => { }
}
self.scene.root = Some(self.create_frame_tree_root_layers(frame_tree));
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;
@ -421,7 +422,8 @@ impl IOCompositor {
}
fn create_frame_tree_root_layers(&mut self,
frame_tree: &SendableFrameTree)
frame_tree: &SendableFrameTree,
frame_rect: Option<TypedRect<PagePx, f32>>)
-> Rc<Layer<CompositorData>> {
// Initialize the ReadyState and RenderState for this pipeline.
self.ready_states.insert(frame_tree.pipeline.id, Blank);
@ -440,8 +442,15 @@ impl IOCompositor {
WantsScrollEvents,
self.opts.tile_size);
match frame_rect {
Some(ref frame_rect) => {
*root_layer.bounds.borrow_mut() = frame_rect * self.device_pixels_per_page_px();
}
None => {}
}
for kid in frame_tree.children.iter() {
root_layer.add_child(self.create_frame_tree_root_layers(&kid.frame_tree));
root_layer.add_child(self.create_frame_tree_root_layers(&kid.frame_tree, kid.rect));
}
return root_layer;
}
@ -701,13 +710,15 @@ impl IOCompositor {
self.hidpi_factor = new_hidpi_factor;
self.update_zoom_transform();
}
if self.window_size != new_size {
debug!("osmain: window resized to {:?}", new_size);
self.window_size = new_size;
self.send_window_size();
} else {
debug!("osmain: dropping window resize since size is still {:?}", new_size);
if self.window_size == new_size {
return;
}
debug!("osmain: window resized to {:?}", new_size);
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) {