[webkit-reviews] review denied: [Bug 81786] Support fixed position elements in Qt WebKit2 : [Attachment 133414] Patch
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Fri Mar 23 06:18:21 PDT 2012
Noam Rosenthal <noam.rosenthal at nokia.com> has denied Yael
<yael.aharon at nokia.com>'s request for review:
Bug 81786: Support fixed position elements in Qt WebKit2
https://bugs.webkit.org/show_bug.cgi?id=81786
Attachment 133414: Patch
https://bugs.webkit.org/attachment.cgi?id=133414&action=review
------- Additional Comments from Noam Rosenthal <noam.rosenthal at nokia.com>
View in context: https://bugs.webkit.org/attachment.cgi?id=133414&action=review
Discussed this on IRC;
I'd rather we don't pass around all this fixed-position information, and
instead do something more aligned with how GraphicsLayer are offseted in
WebCore, by setting a scrollOffset on all of them.
> Source/WebCore/page/FrameView.cpp:1717
> + if
(m_frame->page()->settings()->acceleratedCompositingForFixedPositionEnabled())
{
> + updateFixedElementsAfterScrolling();
> + repaintFixedElementsAfterScrolling();
> + }
This probably needs a comment.
> Source/WebCore/platform/graphics/texmap/GraphicsLayerTextureMapper.h:109
> + HashMap<int, WebCore::Length> m_fixedPositionInformation;
I don't like using a map for 4 items. Please see previous comment.
> Source/WebKit2/UIProcess/WebLayerTreeRenderer.cpp:126
> + if (m_fixedLayers.size()) {
> + LayerMap::iterator end = m_fixedLayers.end();
> + for (LayerMap::iterator it = m_fixedLayers.begin(); it != end; ++it)
> + it->second->syncCompositingStateForThisLayerOnly();
> + }
Why do you need to sync these again?
> Source/WebKit2/UIProcess/WebLayerTreeRenderer.cpp:167
> + m_contentsSize = contentsSize;
how is this different from DrawingArea::contentsRect()?
> Source/WebKit2/UIProcess/WebLayerTreeRenderer.cpp:196
> + adjustedX = visibleEdgeLeft + left.getFloatValue() *
m_visibleContentsRect.width() / 100;
You're doing manually what WebCore::Length can do automatically.
> Source/WebKit2/WebProcess/WebCoreSupport/WebGraphicsLayer.h:120
> + WebKit::PositionInformationMap& fixedPositionInformation() { return
m_fixedPositionInformation; }
> + bool hasFixedPosition() const { return m_hasFixedPosition; }
> + void setHasFixedPosition(bool isFixed) { m_hasFixedPosition = isFixed; }
> +
I'd rather call this
fixedToViewport
and offsetFromViewport
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