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compositor: Request reflow when doing a page zooming (#38166)

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Request a reflow when doing page zoom and only modify the scaling of the
WebView scene after the first root pipeline display list with the new
zoom is ready. In addition:

  - store zoom limits in `Scale` types
  - send `ViewportDetails` along with the display list so that we can
    detect when the root pipeline scale is ready.

Testing: This is quite hard to test as it requires verification that
contents are zoomed appropriately at the right time.
Fixes: #38091.

Signed-off-by: Martin Robinson <mrobinson@igalia.com>
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Martin Robinson 2025-07-29 12:04:37 +02:00 • committed by GitHub
parent 3d2f0d1be5
commit 8d5faa9bf9
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10 changed files with 111 additions and 44 deletions
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10
components/shared/embedder/lib.rs
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@ -38,7 +38,7 @@ use style::queries::values::PrefersColorScheme;
use style_traits::CSSPixel;
use url::Url;
use uuid::Uuid;
use webrender_api::units::{DeviceIntPoint, DeviceIntRect, DeviceIntSize, DevicePixel};
use webrender_api::units::{DeviceIntPoint, DeviceIntRect, DeviceIntSize, DevicePixel, LayoutSize};
pub use crate::input_events::*;
pub use crate::webdriver::*;
@ -319,6 +319,14 @@ pub struct ViewportDetails {
pub hidpi_scale_factor: Scale<f32, CSSPixel, DevicePixel>,
}
impl ViewportDetails {
/// Convert this [`ViewportDetails`] size to a [`LayoutSize`]. This is the same numerical
/// value as [`Self::size`], because a `LayoutPixel` is the same as a `CSSPixel`.
pub fn layout_size(&self) -> LayoutSize {
Size2D::from_untyped(self.size.to_untyped())
}
}
/// Unlike [`ScreenGeometry`], the data is in device-independent pixels
/// to be used by DOM APIs
#[derive(Default, Deserialize, Serialize)]