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FrameLayerBuilder::BuildContainerLayerFor takes responsibility for resolution scaling. The ContainerParameters passed in are added to any transform requested. Then we extract the scale part of the transform, round the scale up to the nearest power of two if the transform may be actively animated (so we don't have to redraw layer contents constantly), pass that scale down to be applied by each child and set the residual transform on the ContainerLayer. For child layers built via BuildLayer, we just pass the requested scale factor in via the ContainerParameters. If the returned layer is a ContainerLayer then BuildLayer is guaranteed to have already done necessary scaling. If the returned layer is not a ContainerLayer then we apply the scale ourselves by adding the scale to the child layer's transform. For child ThebesLayers containing non-layer display items, we scale the drawing of those display items so that the child ThebesLayers are simply larger or smaller (larger or smaller visible regions). We have to scale all visible rects, clip rects etc that are in the coordinates of ThebesLayers or the parent ContainerLayer. To keep things simple we do this whenever we convert from appunits to integer layer coordinates. When a ThebesLayer's resolution changes we need to rerender the whole thing. nsDisplayList::PaintForFrame needs to respect the presshell's resolution setting. We do that by building a layer tree with a ContainerParameters requesting a scale up by the presshell resolution; once that layer tree is built, we adjust the root layer transform to scale back down by the resolution. |
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| .. | ||
| crashtests | ||
| tests | ||
| FrameLayerBuilder.cpp | ||
| FrameLayerBuilder.h | ||
| FramePropertyTable.cpp | ||
| FramePropertyTable.h | ||
| Makefile.in | ||
| nsBidi.cpp | ||
| nsBidi.h | ||
| nsBidiPresUtils.cpp | ||
| nsBidiPresUtils.h | ||
| nsCaret.cpp | ||
| nsCaret.h | ||
| nsChangeHint.h | ||
| nsChildIterator.cpp | ||
| nsChildIterator.h | ||
| nsCompatibility.h | ||
| nsCounterManager.cpp | ||
| nsCounterManager.h | ||
| nsCSSColorUtils.cpp | ||
| nsCSSColorUtils.h | ||
| nsCSSFrameConstructor.cpp | ||
| nsCSSFrameConstructor.h | ||
| nsCSSRendering.cpp | ||
| nsCSSRendering.h | ||
| nsCSSRenderingBorders.cpp | ||
| nsCSSRenderingBorders.h | ||
| nsDisplayItemTypes.h | ||
| nsDisplayList.cpp | ||
| nsDisplayList.h | ||
| nsDocumentViewer.cpp | ||
| nsFrameManager.cpp | ||
| nsFrameManager.h | ||
| nsFrameManagerBase.h | ||
| nsFrameTraversal.cpp | ||
| nsFrameTraversal.h | ||
| nsGenConList.cpp | ||
| nsGenConList.h | ||
| nsIDocumentViewer.h | ||
| nsIDocumentViewerPrint.h | ||
| nsIFrameTraversal.h | ||
| nsILayoutDebugger.h | ||
| nsILayoutHistoryState.h | ||
| nsImageLoader.cpp | ||
| nsImageLoader.h | ||
| nsIPercentHeightObserver.h | ||
| nsIPresShell.h | ||
| nsIReflowCallback.h | ||
| nsIStyleSheetService.idl | ||
| nsLayoutDebugger.cpp | ||
| nsLayoutErrors.h | ||
| nsLayoutHistoryState.cpp | ||
| nsLayoutUtils.cpp | ||
| nsLayoutUtils.h | ||
| nsPresArena.cpp | ||
| nsPresArena.h | ||
| nsPresContext.cpp | ||
| nsPresContext.h | ||
| nsPresShell.cpp | ||
| nsPresState.h | ||
| nsQuoteList.cpp | ||
| nsQuoteList.h | ||
| nsRefreshDriver.cpp | ||
| nsRefreshDriver.h | ||
| nsStyleChangeList.cpp | ||
| nsStyleChangeList.h | ||
| nsStyleConsts.h | ||
| nsStyleSheetService.cpp | ||
| nsStyleSheetService.h | ||
| PaintTracker.cpp | ||
| PaintTracker.h | ||
| RestyleTracker.cpp | ||
| RestyleTracker.h | ||