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Do not compound iframe margins when positioning

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Instead of taking margin size into account twice when positioning
layers, just rely on the absolute position calculated during display
list construction.
This commit is contained in:
Martin Robinson 2014-10-13 17:22:33 -07:00
parent 6e3c776387
commit e53093e127
4 changed files with 23 additions and 12 deletions
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21
components/layout/fragment.rs
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@ -1236,7 +1236,7 @@ impl Fragment {
match self.specific {
IframeFragment(ref iframe_fragment) => {
self.finalize_position_and_size_of_iframe(iframe_fragment,
flow_origin,
absolute_fragment_bounds.origin,
layout_context)
}
_ => {}
@ -1741,23 +1741,20 @@ impl Fragment {
iframe_fragment: &IframeFragmentInfo,
offset: Point2D<Au>,
layout_context: &LayoutContext) {
let mbp = (self.margin + self.border_padding).to_physical(self.style.writing_mode);
let border_padding = (self.border_padding).to_physical(self.style.writing_mode);
let content_size = self.content_box().size.to_physical(self.style.writing_mode);
let left = offset.x + mbp.left;
let top = offset.y + mbp.top;
let width = content_size.width;
let height = content_size.height;
let origin = Point2D(geometry::to_frac_px(left) as f32, geometry::to_frac_px(top) as f32);
let size = Size2D(geometry::to_frac_px(width) as f32, geometry::to_frac_px(height) as f32);
let rect = Rect(origin, size);
let iframe_rect = Rect(Point2D(geometry::to_frac_px(offset.x + border_padding.left) as f32,
geometry::to_frac_px(offset.y + border_padding.top) as f32),
Size2D(geometry::to_frac_px(content_size.width) as f32,
geometry::to_frac_px(content_size.height) as f32));
debug!("finalizing position and size of iframe for {:?},{:?}",
iframe_fragment.pipeline_id,
iframe_fragment.subpage_id);
let msg = FrameRectMsg(iframe_fragment.pipeline_id, iframe_fragment.subpage_id, rect);
let ConstellationChan(ref chan) = layout_context.shared.constellation_chan;
chan.send(msg)
chan.send(FrameRectMsg(iframe_fragment.pipeline_id,
iframe_fragment.subpage_id,
iframe_rect));
}
/// Returns true if and only if this is the *primary fragment* for the fragment's style object