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1 /* | 1 /* |
2 Copyright (C) 1997 Martin Jones (mjones@kde.org) | 2 Copyright (C) 1997 Martin Jones (mjones@kde.org) |
3 (C) 1998 Waldo Bastian (bastian@kde.org) | 3 (C) 1998 Waldo Bastian (bastian@kde.org) |
4 (C) 1998, 1999 Torben Weis (weis@kde.org) | 4 (C) 1998, 1999 Torben Weis (weis@kde.org) |
5 (C) 1999 Lars Knoll (knoll@kde.org) | 5 (C) 1999 Lars Knoll (knoll@kde.org) |
6 (C) 1999 Antti Koivisto (koivisto@kde.org) | 6 (C) 1999 Antti Koivisto (koivisto@kde.org) |
7 Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights | 7 Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights |
8 reserved. | 8 reserved. |
9 | 9 |
10 This library is free software; you can redistribute it and/or | 10 This library is free software; you can redistribute it and/or |
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192 void adjustViewSize(); | 192 void adjustViewSize(); |
193 void adjustViewSizeAndLayout(); | 193 void adjustViewSizeAndLayout(); |
194 | 194 |
195 // Scale used to convert incoming input events. | 195 // Scale used to convert incoming input events. |
196 float inputEventsScaleFactor() const; | 196 float inputEventsScaleFactor() const; |
197 | 197 |
198 // Offset used to convert incoming input events while emulating device metics. | 198 // Offset used to convert incoming input events while emulating device metics. |
199 IntSize inputEventsOffsetForEmulation() const; | 199 IntSize inputEventsOffsetForEmulation() const; |
200 void setInputEventsTransformForEmulation(const IntSize&, float); | 200 void setInputEventsTransformForEmulation(const IntSize&, float); |
201 | 201 |
202 void setScrollPosition(const DoublePoint&, | |
203 ScrollType, | |
204 ScrollBehavior = ScrollBehaviorInstant) override; | |
205 void didChangeScrollOffset(); | 202 void didChangeScrollOffset(); |
206 | |
207 void didUpdateElasticOverscroll(); | 203 void didUpdateElasticOverscroll(); |
208 | 204 |
209 void viewportSizeChanged(bool widthChanged, bool heightChanged); | 205 void viewportSizeChanged(bool widthChanged, bool heightChanged); |
210 | 206 |
211 AtomicString mediaType() const; | 207 AtomicString mediaType() const; |
212 void setMediaType(const AtomicString&); | 208 void setMediaType(const AtomicString&); |
213 void adjustMediaTypeForPrinting(bool printing); | 209 void adjustMediaTypeForPrinting(bool printing); |
214 | 210 |
215 WebDisplayMode displayMode() { return m_displayMode; } | 211 WebDisplayMode displayMode() { return m_displayMode; } |
216 void setDisplayMode(WebDisplayMode); | 212 void setDisplayMode(WebDisplayMode); |
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295 void disableAutoSizeMode(); | 291 void disableAutoSizeMode(); |
296 | 292 |
297 void forceLayoutForPagination(const FloatSize& pageSize, | 293 void forceLayoutForPagination(const FloatSize& pageSize, |
298 const FloatSize& originalPageSize, | 294 const FloatSize& originalPageSize, |
299 float maximumShrinkFactor); | 295 float maximumShrinkFactor); |
300 | 296 |
301 enum UrlFragmentBehavior { UrlFragmentScroll, UrlFragmentDontScroll }; | 297 enum UrlFragmentBehavior { UrlFragmentScroll, UrlFragmentDontScroll }; |
302 // Updates the fragment anchor element based on URL's fragment identifier. | 298 // Updates the fragment anchor element based on URL's fragment identifier. |
303 // Updates corresponding ':target' CSS pseudo class on the anchor element. | 299 // Updates corresponding ':target' CSS pseudo class on the anchor element. |
304 // If |UrlFragmentScroll| is passed in then makes the anchor element | 300 // If |UrlFragmentScroll| is passed in then makes the anchor element |
305 // focused and also visible by scrolling to it. The scroll position is | 301 // focused and also visible by scrolling to it. The scroll offset is |
306 // maintained during the frame loading process. | 302 // maintained during the frame loading process. |
307 void processUrlFragment(const KURL&, UrlFragmentBehavior = UrlFragmentScroll); | 303 void processUrlFragment(const KURL&, UrlFragmentBehavior = UrlFragmentScroll); |
308 void clearFragmentAnchor(); | 304 void clearFragmentAnchor(); |
309 | 305 |
310 // Methods to convert points and rects between the coordinate space of the | 306 // Methods to convert points and rects between the coordinate space of the |
311 // layoutObject, and this view. | 307 // layoutObject, and this view. |
312 IntRect convertFromLayoutObject(const LayoutObject&, const IntRect&) const; | 308 IntRect convertFromLayoutObject(const LayoutObject&, const IntRect&) const; |
313 IntRect convertToLayoutObject(const LayoutObject&, const IntRect&) const; | 309 IntRect convertToLayoutObject(const LayoutObject&, const IntRect&) const; |
314 IntPoint convertFromLayoutObject(const LayoutObject&, const IntPoint&) const; | 310 IntPoint convertFromLayoutObject(const LayoutObject&, const IntPoint&) const; |
315 IntPoint convertToLayoutObject(const LayoutObject&, const IntPoint&) const; | 311 IntPoint convertToLayoutObject(const LayoutObject&, const IntPoint&) const; |
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406 void invalidatePaintForTickmarks(); | 402 void invalidatePaintForTickmarks(); |
407 | 403 |
408 // Since the compositor can resize the viewport due to top controls and | 404 // Since the compositor can resize the viewport due to top controls and |
409 // commit scroll offsets before a WebView::resize occurs, we need to adjust | 405 // commit scroll offsets before a WebView::resize occurs, we need to adjust |
410 // our scroll extents to prevent clamping the scroll offsets. | 406 // our scroll extents to prevent clamping the scroll offsets. |
411 void setTopControlsViewportAdjustment(float); | 407 void setTopControlsViewportAdjustment(float); |
412 IntSize topControlsSize() const { | 408 IntSize topControlsSize() const { |
413 return IntSize(0, ceilf(m_topControlsViewportAdjustment)); | 409 return IntSize(0, ceilf(m_topControlsViewportAdjustment)); |
414 } | 410 } |
415 | 411 |
416 IntPoint maximumScrollPosition() const override; | 412 IntSize maximumScrollOffsetInt() const override; |
417 | 413 |
418 // ScrollableArea interface | 414 // ScrollableArea interface |
419 void getTickmarks(Vector<IntRect>&) const override; | 415 void getTickmarks(Vector<IntRect>&) const override; |
420 IntRect scrollableAreaBoundingBox() const override; | 416 IntRect scrollableAreaBoundingBox() const override; |
421 bool scrollAnimatorEnabled() const override; | 417 bool scrollAnimatorEnabled() const override; |
422 bool usesCompositedScrolling() const override; | 418 bool usesCompositedScrolling() const override; |
423 bool shouldScrollOnMainThread() const override; | 419 bool shouldScrollOnMainThread() const override; |
424 GraphicsLayer* layerForScrolling() const override; | 420 GraphicsLayer* layerForScrolling() const override; |
425 GraphicsLayer* layerForHorizontalScrollbar() const override; | 421 GraphicsLayer* layerForHorizontalScrollbar() const override; |
426 GraphicsLayer* layerForVerticalScrollbar() const override; | 422 GraphicsLayer* layerForVerticalScrollbar() const override; |
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520 // (e.g. DevTool's viewport override). | 516 // (e.g. DevTool's viewport override). |
521 void clipPaintRect(FloatRect*) const; | 517 void clipPaintRect(FloatRect*) const; |
522 | 518 |
523 // Functions for getting/setting the size of the document contained inside the | 519 // Functions for getting/setting the size of the document contained inside the |
524 // FrameView (as an IntSize or as individual width and height values). | 520 // FrameView (as an IntSize or as individual width and height values). |
525 // Always at least as big as the visibleWidth()/visibleHeight(). | 521 // Always at least as big as the visibleWidth()/visibleHeight(). |
526 IntSize contentsSize() const override; | 522 IntSize contentsSize() const override; |
527 int contentsWidth() const { return contentsSize().width(); } | 523 int contentsWidth() const { return contentsSize().width(); } |
528 int contentsHeight() const { return contentsSize().height(); } | 524 int contentsHeight() const { return contentsSize().height(); } |
529 | 525 |
530 // Functions for querying the current scrolled position (both as a point, a | 526 // Functions for querying the current scrolled offset (both as a point, a |
531 // size, or as individual X and Y values). Be careful in using the Double | 527 // size, or as individual X and Y values). Be careful in using the Float |
532 // version scrollPositionDouble() and scrollOffsetDouble(). They are meant to | 528 // version scrollOffset() and scrollOffset(). They are meant to be used to |
533 // be used to communicate the fractional scroll position/offset with chromium | 529 // communicate the fractional scroll offset with chromium compositor which can |
534 // compositor which can do sub-pixel positioning. Do not call these if the | 530 // do sub-pixel positioning. Do not call these if the scroll offset is used |
535 // scroll position/offset is used in Blink for positioning. Use the Int | 531 // in Blink for positioning. Use the Int version instead. |
536 // version instead. | 532 IntSize scrollOffsetInt() const override { |
537 IntPoint scrollPosition() const override { | |
538 return visibleContentRect().location(); | |
539 } | |
540 DoublePoint scrollPositionDouble() const override { return m_scrollPosition; } | |
541 // Gets the scrolled position as an IntSize. Convenient for adding to other | |
542 // sizes. | |
543 IntSize scrollOffset() const { | |
544 return toIntSize(visibleContentRect().location()); | 533 return toIntSize(visibleContentRect().location()); |
545 } | 534 } |
546 DoubleSize scrollOffsetDouble() const { | 535 ScrollOffset scrollOffset() const override { return m_scrollOffset; } |
547 return DoubleSize(m_scrollPosition.x(), m_scrollPosition.y()); | 536 ScrollOffset pendingScrollDelta() const { return m_pendingScrollDelta; } |
548 } | 537 IntSize minimumScrollOffsetInt() |
549 DoubleSize pendingScrollDelta() const { return m_pendingScrollDelta; } | 538 const override; // The minimum offset we can be scrolled to. |
550 // The minimum position we can be scrolled to. | 539 int scrollX() const { return scrollOffsetInt().width(); } |
551 IntPoint minimumScrollPosition() const override; | 540 int scrollY() const { return scrollOffsetInt().height(); } |
552 int scrollX() const { return scrollPosition().x(); } | |
553 int scrollY() const { return scrollPosition().y(); } | |
554 | 541 |
555 // Scroll the actual contents of the view (either blitting or invalidating as | 542 // Scroll the actual contents of the view (either blitting or invalidating as |
556 // needed). | 543 // needed). |
557 void scrollContents(const IntSize& scrollDelta); | 544 void scrollContents(const IntSize& scrollDelta); |
558 | 545 |
559 // This gives us a means of blocking updating our scrollbars until the first | 546 // This gives us a means of blocking updating our scrollbars until the first |
560 // layout has occurred. | 547 // layout has occurred. |
561 void setScrollbarsSuppressed(bool suppressed) { | 548 void setScrollbarsSuppressed(bool suppressed) { |
562 m_scrollbarsSuppressed = suppressed; | 549 m_scrollbarsSuppressed = suppressed; |
563 } | 550 } |
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789 private: | 776 private: |
790 AutoReset<bool> m_scope; | 777 AutoReset<bool> m_scope; |
791 }; | 778 }; |
792 | 779 |
793 // Only for LayoutPart to traverse into sub frames during paint invalidation. | 780 // Only for LayoutPart to traverse into sub frames during paint invalidation. |
794 void invalidateTreeIfNeeded(const PaintInvalidationState&); | 781 void invalidateTreeIfNeeded(const PaintInvalidationState&); |
795 | 782 |
796 private: | 783 private: |
797 explicit FrameView(LocalFrame*); | 784 explicit FrameView(LocalFrame*); |
798 | 785 |
799 void setScrollOffset(const DoublePoint&, ScrollType) override; | 786 void updateScrollOffset(const ScrollOffset&, ScrollType) override; |
800 | 787 |
801 void updateLifecyclePhasesInternal( | 788 void updateLifecyclePhasesInternal( |
802 DocumentLifecycle::LifecycleState targetState); | 789 DocumentLifecycle::LifecycleState targetState); |
803 | 790 |
804 void invalidateTreeIfNeededRecursive(); | 791 void invalidateTreeIfNeededRecursive(); |
805 void scrollContentsIfNeededRecursive(); | 792 void scrollContentsIfNeededRecursive(); |
806 void updateStyleAndLayoutIfNeededRecursive(); | 793 void updateStyleAndLayoutIfNeededRecursive(); |
807 void updatePaintProperties(); | 794 void updatePaintProperties(); |
808 void synchronizedPaint(); | 795 void synchronizedPaint(); |
809 void synchronizedPaintRecursively(GraphicsLayer*); | 796 void synchronizedPaintRecursively(GraphicsLayer*); |
810 | 797 |
811 void updateStyleAndLayoutIfNeededRecursiveInternal(); | 798 void updateStyleAndLayoutIfNeededRecursiveInternal(); |
812 void invalidateTreeIfNeededRecursiveInternal(); | 799 void invalidateTreeIfNeededRecursiveInternal(); |
813 | 800 |
814 void pushPaintArtifactToCompositor(); | 801 void pushPaintArtifactToCompositor(); |
815 | 802 |
816 void reset(); | 803 void reset(); |
817 void init(); | 804 void init(); |
818 | 805 |
819 void clearLayoutSubtreeRootsAndMarkContainingBlocks(); | 806 void clearLayoutSubtreeRootsAndMarkContainingBlocks(); |
820 | 807 |
821 // Called when our frame rect changes (or the rect/scroll position of an | 808 // Called when our frame rect changes (or the rect/scroll offset of an |
822 // ancestor changes). | 809 // ancestor changes). |
823 void frameRectsChanged() override; | 810 void frameRectsChanged() override; |
824 | 811 |
825 bool contentsInCompositedLayer() const; | 812 bool contentsInCompositedLayer() const; |
826 | 813 |
827 void calculateScrollbarModesFromOverflowStyle(const ComputedStyle*, | 814 void calculateScrollbarModesFromOverflowStyle(const ComputedStyle*, |
828 ScrollbarMode& hMode, | 815 ScrollbarMode& hMode, |
829 ScrollbarMode& vMode); | 816 ScrollbarMode& vMode); |
830 | 817 |
831 void updateCounters(); | 818 void updateCounters(); |
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857 void scheduleUpdateWidgetsIfNecessary(); | 844 void scheduleUpdateWidgetsIfNecessary(); |
858 void updateWidgetsTimerFired(TimerBase*); | 845 void updateWidgetsTimerFired(TimerBase*); |
859 bool updateWidgets(); | 846 bool updateWidgets(); |
860 | 847 |
861 bool processUrlFragmentHelper(const String&, UrlFragmentBehavior); | 848 bool processUrlFragmentHelper(const String&, UrlFragmentBehavior); |
862 void setFragmentAnchor(Node*); | 849 void setFragmentAnchor(Node*); |
863 void scrollToFragmentAnchor(); | 850 void scrollToFragmentAnchor(); |
864 void didScrollTimerFired(TimerBase*); | 851 void didScrollTimerFired(TimerBase*); |
865 | 852 |
866 void updateLayersAndCompositingAfterScrollIfNeeded( | 853 void updateLayersAndCompositingAfterScrollIfNeeded( |
867 const DoubleSize& scrollDelta); | 854 const ScrollOffset& scrollDelta); |
868 | 855 |
869 static bool computeCompositedSelection(LocalFrame&, CompositedSelection&); | 856 static bool computeCompositedSelection(LocalFrame&, CompositedSelection&); |
870 void updateCompositedSelectionIfNeeded(); | 857 void updateCompositedSelectionIfNeeded(); |
871 | 858 |
872 // Returns true if the FrameView's own scrollbars overlay its content when | 859 // Returns true if the FrameView's own scrollbars overlay its content when |
873 // visible. | 860 // visible. |
874 bool hasOverlayScrollbars() const; | 861 bool hasOverlayScrollbars() const; |
875 | 862 |
876 // Returns true if the frame should use custom scrollbars. If true, one of | 863 // Returns true if the frame should use custom scrollbars. If true, one of |
877 // either |customScrollbarElement| or |customScrollbarFrame| will be set to | 864 // either |customScrollbarElement| or |customScrollbarFrame| will be set to |
878 // the element or frame which owns the scrollbar with the other set to null. | 865 // the element or frame which owns the scrollbar with the other set to null. |
879 bool shouldUseCustomScrollbars(Element*& customScrollbarElement, | 866 bool shouldUseCustomScrollbars(Element*& customScrollbarElement, |
880 LocalFrame*& customScrollbarFrame) const; | 867 LocalFrame*& customScrollbarFrame) const; |
881 | 868 |
882 // Returns true if a scrollbar needs to go from native -> custom or vice | 869 // Returns true if a scrollbar needs to go from native -> custom or vice |
883 // versa. | 870 // versa. |
884 bool needsScrollbarReconstruction() const; | 871 bool needsScrollbarReconstruction() const; |
885 | 872 |
886 bool shouldIgnoreOverflowHidden() const; | 873 bool shouldIgnoreOverflowHidden() const; |
887 | 874 |
888 void updateScrollCorner(); | 875 void updateScrollCorner(); |
889 | 876 |
890 AXObjectCache* axObjectCache() const; | 877 AXObjectCache* axObjectCache() const; |
891 | 878 |
892 void setLayoutSizeInternal(const IntSize&); | 879 void setLayoutSizeInternal(const IntSize&); |
893 | 880 |
894 bool adjustScrollbarExistence(ComputeScrollbarExistenceOption = FirstPass); | 881 bool adjustScrollbarExistence(ComputeScrollbarExistenceOption = FirstPass); |
895 void adjustScrollbarOpacity(); | 882 void adjustScrollbarOpacity(); |
896 void adjustScrollPositionFromUpdateScrollbars(); | 883 void adjustScrollOffsetFromUpdateScrollbars(); |
897 bool visualViewportSuppliesScrollbars() const; | 884 bool visualViewportSuppliesScrollbars() const; |
898 | 885 |
899 bool isFrameViewScrollbar(const Widget* child) const { | 886 bool isFrameViewScrollbar(const Widget* child) const { |
900 return horizontalScrollbar() == child || verticalScrollbar() == child; | 887 return horizontalScrollbar() == child || verticalScrollbar() == child; |
901 } | 888 } |
902 | 889 |
903 ScrollingCoordinator* scrollingCoordinator() const; | 890 ScrollingCoordinator* scrollingCoordinator() const; |
904 | 891 |
905 void prepareLayoutAnalyzer(); | 892 void prepareLayoutAnalyzer(); |
906 std::unique_ptr<TracedValue> analyzerCounters(); | 893 std::unique_ptr<TracedValue> analyzerCounters(); |
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1018 Member<Scrollbar> m_horizontalScrollbar; | 1005 Member<Scrollbar> m_horizontalScrollbar; |
1019 Member<Scrollbar> m_verticalScrollbar; | 1006 Member<Scrollbar> m_verticalScrollbar; |
1020 ScrollbarMode m_horizontalScrollbarMode; | 1007 ScrollbarMode m_horizontalScrollbarMode; |
1021 ScrollbarMode m_verticalScrollbarMode; | 1008 ScrollbarMode m_verticalScrollbarMode; |
1022 | 1009 |
1023 bool m_horizontalScrollbarLock; | 1010 bool m_horizontalScrollbarLock; |
1024 bool m_verticalScrollbarLock; | 1011 bool m_verticalScrollbarLock; |
1025 | 1012 |
1026 ChildrenWidgetSet m_children; | 1013 ChildrenWidgetSet m_children; |
1027 | 1014 |
1028 DoubleSize m_pendingScrollDelta; | 1015 ScrollOffset m_pendingScrollDelta; |
1029 DoublePoint m_scrollPosition; | 1016 ScrollOffset m_scrollOffset; |
1030 IntSize m_contentsSize; | 1017 IntSize m_contentsSize; |
1031 | 1018 |
1032 int m_scrollbarsAvoidingResizer; | 1019 int m_scrollbarsAvoidingResizer; |
1033 bool m_scrollbarsSuppressed; | 1020 bool m_scrollbarsSuppressed; |
1034 | 1021 |
1035 bool m_inUpdateScrollbars; | 1022 bool m_inUpdateScrollbars; |
1036 | 1023 |
1037 std::unique_ptr<LayoutAnalyzer> m_analyzer; | 1024 std::unique_ptr<LayoutAnalyzer> m_analyzer; |
1038 | 1025 |
1039 // Mark if something has changed in the mapping from Frame to GraphicsLayer | 1026 // Mark if something has changed in the mapping from Frame to GraphicsLayer |
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1129 widget.isFrameView()); | 1116 widget.isFrameView()); |
1130 DEFINE_TYPE_CASTS(FrameView, | 1117 DEFINE_TYPE_CASTS(FrameView, |
1131 ScrollableArea, | 1118 ScrollableArea, |
1132 scrollableArea, | 1119 scrollableArea, |
1133 scrollableArea->isFrameView(), | 1120 scrollableArea->isFrameView(), |
1134 scrollableArea.isFrameView()); | 1121 scrollableArea.isFrameView()); |
1135 | 1122 |
1136 } // namespace blink | 1123 } // namespace blink |
1137 | 1124 |
1138 #endif // FrameView_h | 1125 #endif // FrameView_h |
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