| /* |
| * Copyright (C) 2003, 2009 Apple Inc. All rights reserved. |
| * |
| * Portions are Copyright (C) 1998 Netscape Communications Corporation. |
| * |
| * Other contributors: |
| * Robert O'Callahan <roc+@cs.cmu.edu> |
| * David Baron <dbaron@fas.harvard.edu> |
| * Christian Biesinger <cbiesinger@web.de> |
| * Randall Jesup <rjesup@wgate.com> |
| * Roland Mainz <roland.mainz@informatik.med.uni-giessen.de> |
| * Josh Soref <timeless@mac.com> |
| * Boris Zbarsky <bzbarsky@mit.edu> |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with this library; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| * |
| * Alternatively, the contents of this file may be used under the terms |
| * of either the Mozilla Public License Version 1.1, found at |
| * http://www.mozilla.org/MPL/ (the "MPL") or the GNU General Public |
| * License Version 2.0, found at http://www.fsf.org/copyleft/gpl.html |
| * (the "GPL"), in which case the provisions of the MPL or the GPL are |
| * applicable instead of those above. If you wish to allow use of your |
| * version of this file only under the terms of one of those two |
| * licenses (the MPL or the GPL) and not to allow others to use your |
| * version of this file under the LGPL, indicate your decision by |
| * deletingthe provisions above and replace them with the notice and |
| * other provisions required by the MPL or the GPL, as the case may be. |
| * If you do not delete the provisions above, a recipient may use your |
| * version of this file under any of the LGPL, the MPL or the GPL. |
| */ |
| |
| #ifndef RenderLayer_h |
| #define RenderLayer_h |
| |
| #include "PaintInfo.h" |
| #include "RenderBox.h" |
| #include "ScrollBehavior.h" |
| #include "ScrollableArea.h" |
| #include <wtf/OwnPtr.h> |
| |
| namespace WebCore { |
| |
| class HitTestRequest; |
| class HitTestResult; |
| class HitTestingTransformState; |
| class RenderMarquee; |
| class RenderReplica; |
| class RenderScrollbarPart; |
| class RenderStyle; |
| class RenderView; |
| class Scrollbar; |
| class TransformationMatrix; |
| |
| #if USE(ACCELERATED_COMPOSITING) |
| class RenderLayerBacking; |
| class RenderLayerCompositor; |
| #endif |
| |
| class ClipRects { |
| public: |
| ClipRects() |
| : m_refCnt(0) |
| , m_fixed(false) |
| { |
| } |
| |
| ClipRects(const IntRect& r) |
| : m_overflowClipRect(r) |
| , m_fixedClipRect(r) |
| , m_posClipRect(r) |
| #if ENABLE(ANDROID_OVERFLOW_SCROLL) |
| , m_hitTestClip(r) |
| #endif |
| , m_refCnt(0) |
| , m_fixed(false) |
| { |
| } |
| |
| ClipRects(const ClipRects& other) |
| : m_overflowClipRect(other.overflowClipRect()) |
| , m_fixedClipRect(other.fixedClipRect()) |
| , m_posClipRect(other.posClipRect()) |
| #if ENABLE(ANDROID_OVERFLOW_SCROLL) |
| , m_hitTestClip(other.hitTestClip()) |
| #endif |
| , m_refCnt(0) |
| , m_fixed(other.fixed()) |
| { |
| } |
| |
| void reset(const IntRect& r) |
| { |
| m_overflowClipRect = r; |
| m_fixedClipRect = r; |
| m_posClipRect = r; |
| #if ENABLE(ANDROID_OVERFLOW_SCROLL) |
| m_hitTestClip = r; |
| #endif |
| m_fixed = false; |
| } |
| |
| const IntRect& overflowClipRect() const { return m_overflowClipRect; } |
| void setOverflowClipRect(const IntRect& r) { m_overflowClipRect = r; } |
| |
| const IntRect& fixedClipRect() const { return m_fixedClipRect; } |
| void setFixedClipRect(const IntRect&r) { m_fixedClipRect = r; } |
| |
| const IntRect& posClipRect() const { return m_posClipRect; } |
| void setPosClipRect(const IntRect& r) { m_posClipRect = r; } |
| #if ENABLE(ANDROID_OVERFLOW_SCROLL) |
| const IntRect& hitTestClip() const { return m_hitTestClip; } |
| void setHitTestClip(const IntRect& r) { m_hitTestClip = r; } |
| #endif |
| |
| bool fixed() const { return m_fixed; } |
| void setFixed(bool fixed) { m_fixed = fixed; } |
| |
| void ref() { m_refCnt++; } |
| void deref(RenderArena* renderArena) { if (--m_refCnt == 0) destroy(renderArena); } |
| |
| void destroy(RenderArena*); |
| |
| // Overloaded new operator. |
| void* operator new(size_t, RenderArena*) throw(); |
| |
| // Overridden to prevent the normal delete from being called. |
| void operator delete(void*, size_t); |
| |
| bool operator==(const ClipRects& other) const |
| { |
| return m_overflowClipRect == other.overflowClipRect() && |
| m_fixedClipRect == other.fixedClipRect() && |
| m_posClipRect == other.posClipRect() && |
| #if ENABLE(ANDROID_OVERFLOW_SCROLL) |
| m_hitTestClip == other.hitTestClip() && |
| #endif |
| m_fixed == other.fixed(); |
| } |
| |
| ClipRects& operator=(const ClipRects& other) |
| { |
| m_overflowClipRect = other.overflowClipRect(); |
| m_fixedClipRect = other.fixedClipRect(); |
| m_posClipRect = other.posClipRect(); |
| #if ENABLE(ANDROID_OVERFLOW_SCROLL) |
| m_hitTestClip = other.hitTestClip(); |
| #endif |
| m_fixed = other.fixed(); |
| return *this; |
| } |
| |
| private: |
| // The normal operator new is disallowed on all render objects. |
| void* operator new(size_t) throw(); |
| |
| private: |
| IntRect m_overflowClipRect; |
| IntRect m_fixedClipRect; |
| IntRect m_posClipRect; |
| #if ENABLE(ANDROID_OVERFLOW_SCROLL) |
| IntRect m_hitTestClip; |
| #endif |
| unsigned m_refCnt : 31; |
| bool m_fixed : 1; |
| }; |
| |
| class RenderLayer : public ScrollableArea { |
| public: |
| friend class RenderReplica; |
| |
| RenderLayer(RenderBoxModelObject*); |
| ~RenderLayer(); |
| |
| RenderBoxModelObject* renderer() const { return m_renderer; } |
| RenderBox* renderBox() const { return m_renderer && m_renderer->isBox() ? toRenderBox(m_renderer) : 0; } |
| RenderLayer* parent() const { return m_parent; } |
| RenderLayer* previousSibling() const { return m_previous; } |
| RenderLayer* nextSibling() const { return m_next; } |
| RenderLayer* firstChild() const { return m_first; } |
| RenderLayer* lastChild() const { return m_last; } |
| |
| void addChild(RenderLayer* newChild, RenderLayer* beforeChild = 0); |
| RenderLayer* removeChild(RenderLayer*); |
| |
| void removeOnlyThisLayer(); |
| void insertOnlyThisLayer(); |
| |
| void repaintIncludingDescendants(); |
| |
| #if USE(ACCELERATED_COMPOSITING) |
| // Indicate that the layer contents need to be repainted. Only has an effect |
| // if layer compositing is being used, |
| void setBackingNeedsRepaint(); |
| void setBackingNeedsRepaintInRect(const IntRect& r); // r is in the coordinate space of the layer's render object |
| void repaintIncludingNonCompositingDescendants(RenderBoxModelObject* repaintContainer); |
| #endif |
| |
| void styleChanged(StyleDifference, const RenderStyle* oldStyle); |
| |
| RenderMarquee* marquee() const { return m_marquee; } |
| |
| bool isNormalFlowOnly() const { return m_isNormalFlowOnly; } |
| bool isSelfPaintingLayer() const; |
| |
| bool requiresSlowRepaints() const; |
| |
| bool isTransparent() const; |
| RenderLayer* transparentPaintingAncestor(); |
| void beginTransparencyLayers(GraphicsContext*, const RenderLayer* rootLayer, PaintBehavior); |
| |
| bool hasReflection() const { return renderer()->hasReflection(); } |
| bool isReflection() const { return renderer()->isReplica(); } |
| RenderReplica* reflection() const { return m_reflection; } |
| RenderLayer* reflectionLayer() const; |
| |
| const RenderLayer* root() const |
| { |
| const RenderLayer* curr = this; |
| while (curr->parent()) |
| curr = curr->parent(); |
| return curr; |
| } |
| |
| int x() const { return m_x; } |
| int y() const { return m_y; } |
| void setLocation(int x, int y) |
| { |
| m_x = x; |
| m_y = y; |
| } |
| |
| int width() const { return m_width; } |
| int height() const { return m_height; } |
| IntSize size() const { return IntSize(m_width, m_height); } |
| |
| #if PLATFORM(ANDROID) |
| void setWidth(int w); |
| void setHeight(int h); |
| #else |
| void setWidth(int w) { m_width = w; } |
| void setHeight(int h) { m_height = h; } |
| #endif |
| |
| int scrollWidth(); |
| int scrollHeight(); |
| |
| void panScrollFromPoint(const IntPoint&); |
| |
| // Scrolling methods for layers that can scroll their overflow. |
| void scrollByRecursively(int xDelta, int yDelta); |
| |
| IntSize scrolledContentOffset() const { return IntSize(scrollXOffset() + m_scrollLeftOverflow, scrollYOffset() + m_scrollTopOverflow); } |
| |
| int scrollXOffset() const { return m_scrollX + m_scrollOrigin.x(); } |
| int scrollYOffset() const { return m_scrollY + m_scrollOrigin.y(); } |
| |
| void scrollToOffset(int x, int y); |
| void scrollToXOffset(int x) { scrollToOffset(x, m_scrollY + m_scrollOrigin.y()); } |
| void scrollToYOffset(int y) { scrollToOffset(m_scrollX + m_scrollOrigin.x(), y); } |
| void scrollRectToVisible(const IntRect&, bool scrollToAnchor = false, const ScrollAlignment& alignX = ScrollAlignment::alignCenterIfNeeded, const ScrollAlignment& alignY = ScrollAlignment::alignCenterIfNeeded); |
| |
| IntRect getRectToExpose(const IntRect& visibleRect, const IntRect& exposeRect, const ScrollAlignment& alignX, const ScrollAlignment& alignY); |
| |
| void setHasHorizontalScrollbar(bool); |
| void setHasVerticalScrollbar(bool); |
| |
| PassRefPtr<Scrollbar> createScrollbar(ScrollbarOrientation); |
| void destroyScrollbar(ScrollbarOrientation); |
| |
| // ScrollableArea overrides |
| virtual Scrollbar* horizontalScrollbar() const { return m_hBar.get(); } |
| virtual Scrollbar* verticalScrollbar() const { return m_vBar.get(); } |
| |
| int verticalScrollbarWidth(OverlayScrollbarSizeRelevancy = IgnoreOverlayScrollbarSize) const; |
| int horizontalScrollbarHeight(OverlayScrollbarSizeRelevancy = IgnoreOverlayScrollbarSize) const; |
| |
| bool hasOverflowControls() const; |
| bool isPointInResizeControl(const IntPoint& absolutePoint) const; |
| bool hitTestOverflowControls(HitTestResult&, const IntPoint& localPoint); |
| IntSize offsetFromResizeCorner(const IntPoint& absolutePoint) const; |
| |
| void paintOverflowControls(GraphicsContext*, int tx, int ty, const IntRect& damageRect, bool paintingOverlayControls = false); |
| void paintScrollCorner(GraphicsContext*, int tx, int ty, const IntRect& damageRect); |
| void paintResizer(GraphicsContext*, int tx, int ty, const IntRect& damageRect); |
| |
| void updateScrollInfoAfterLayout(); |
| |
| bool scroll(ScrollDirection, ScrollGranularity, float multiplier = 1); |
| void autoscroll(); |
| |
| void resize(const PlatformMouseEvent&, const IntSize&); |
| bool inResizeMode() const { return m_inResizeMode; } |
| void setInResizeMode(bool b) { m_inResizeMode = b; } |
| |
| bool isRootLayer() const { return renderer()->isRenderView(); } |
| |
| #if USE(ACCELERATED_COMPOSITING) |
| RenderLayerCompositor* compositor() const; |
| |
| // Notification from the renderer that its content changed (e.g. current frame of image changed). |
| // Allows updates of layer content without repainting. |
| enum ContentChangeType { ImageChanged, MaskImageChanged, CanvasChanged, VideoChanged, FullScreenChanged }; |
| void contentChanged(ContentChangeType); |
| #endif |
| |
| // Returns true if the accelerated compositing is enabled |
| bool hasAcceleratedCompositing() const; |
| |
| bool canRender3DTransforms() const; |
| |
| void updateLayerPosition(); |
| |
| enum UpdateLayerPositionsFlag { |
| CheckForRepaint = 1, |
| IsCompositingUpdateRoot = 1 << 1, |
| UpdateCompositingLayers = 1 << 2, |
| UpdatePagination = 1 << 3 |
| }; |
| typedef unsigned UpdateLayerPositionsFlags; |
| void updateLayerPositions(UpdateLayerPositionsFlags = CheckForRepaint | IsCompositingUpdateRoot | UpdateCompositingLayers, IntPoint* cachedOffset = 0); |
| |
| void updateTransform(); |
| |
| void relativePositionOffset(int& relX, int& relY) const { relX += m_relX; relY += m_relY; } |
| IntSize relativePositionOffset() const { return IntSize(m_relX, m_relY); } |
| |
| void clearClipRectsIncludingDescendants(); |
| void clearClipRects(); |
| |
| void addBlockSelectionGapsBounds(const IntRect&); |
| void clearBlockSelectionGapsBounds(); |
| void repaintBlockSelectionGaps(); |
| |
| // Get the enclosing stacking context for this layer. A stacking context is a layer |
| // that has a non-auto z-index. |
| RenderLayer* stackingContext() const; |
| #if ENABLE(COMPOSITED_FIXED_ELEMENTS) |
| bool isFixed() const { return renderer()->isPositioned() && renderer()->style()->position() == FixedPosition; } |
| // If fixed elements are composited, they will be containing children |
| bool isStackingContext() const { |
| #if ENABLE(ANDROID_OVERFLOW_SCROLL) |
| if (hasOverflowScroll()) |
| return true; |
| #endif |
| return !hasAutoZIndex() || renderer()->isRenderView() || (isComposited() && isFixed()); |
| } |
| #else |
| #if ENABLE(ANDROID_OVERFLOW_SCROLL) |
| bool isStackingContext() const { return !hasAutoZIndex() || renderer()->isRenderView() || hasOverflowScroll(); } |
| #else |
| bool isStackingContext() const { return !hasAutoZIndex() || renderer()->isRenderView() ; } |
| #endif |
| #endif |
| |
| void dirtyZOrderLists(); |
| void dirtyStackingContextZOrderLists(); |
| void updateZOrderLists(); |
| Vector<RenderLayer*>* posZOrderList() const { return m_posZOrderList; } |
| Vector<RenderLayer*>* negZOrderList() const { return m_negZOrderList; } |
| |
| void dirtyNormalFlowList(); |
| void updateNormalFlowList(); |
| Vector<RenderLayer*>* normalFlowList() const { return m_normalFlowList; } |
| |
| bool hasVisibleContent() const { return m_hasVisibleContent; } |
| bool hasVisibleDescendant() const { return m_hasVisibleDescendant; } |
| void setHasVisibleContent(bool); |
| void dirtyVisibleContentStatus(); |
| |
| // Gets the nearest enclosing positioned ancestor layer (also includes |
| // the <html> layer and the root layer). |
| RenderLayer* enclosingPositionedAncestor() const; |
| |
| // The layer relative to which clipping rects for this layer are computed. |
| RenderLayer* clippingRoot() const; |
| |
| #if USE(ACCELERATED_COMPOSITING) |
| // Enclosing compositing layer; if includeSelf is true, may return this. |
| RenderLayer* enclosingCompositingLayer(bool includeSelf = true) const; |
| // Ancestor compositing layer, excluding this. |
| RenderLayer* ancestorCompositingLayer() const { return enclosingCompositingLayer(false); } |
| #endif |
| |
| void convertToLayerCoords(const RenderLayer* ancestorLayer, int& x, int& y) const; |
| |
| bool hasAutoZIndex() const { return renderer()->style()->hasAutoZIndex(); } |
| int zIndex() const { return renderer()->style()->zIndex(); } |
| |
| // The two main functions that use the layer system. The paint method |
| // paints the layers that intersect the damage rect from back to |
| // front. The hitTest method looks for mouse events by walking |
| // layers that intersect the point from front to back. |
| void paint(GraphicsContext*, const IntRect& damageRect, PaintBehavior = PaintBehaviorNormal, RenderObject* paintingRoot = 0); |
| bool hitTest(const HitTestRequest&, HitTestResult&); |
| void paintOverlayScrollbars(GraphicsContext*, const IntRect& damageRect, PaintBehavior, RenderObject* paintingRoot); |
| |
| // This method figures out our layerBounds in coordinates relative to |
| // |rootLayer}. It also computes our background and foreground clip rects |
| // for painting/event handling. |
| void calculateRects(const RenderLayer* rootLayer, const IntRect& paintDirtyRect, IntRect& layerBounds, |
| IntRect& backgroundRect, IntRect& foregroundRect, IntRect& outlineRect, bool temporaryClipRects = false, |
| OverlayScrollbarSizeRelevancy = IgnoreOverlayScrollbarSize) const; |
| |
| // Compute and cache clip rects computed with the given layer as the root |
| void updateClipRects(const RenderLayer* rootLayer, OverlayScrollbarSizeRelevancy = IgnoreOverlayScrollbarSize); |
| // Compute and return the clip rects. If useCached is true, will used previously computed clip rects on ancestors |
| // (rather than computing them all from scratch up the parent chain). |
| void calculateClipRects(const RenderLayer* rootLayer, ClipRects&, bool useCached = false, OverlayScrollbarSizeRelevancy = IgnoreOverlayScrollbarSize) const; |
| ClipRects* clipRects() const { return m_clipRects; } |
| |
| IntRect childrenClipRect() const; // Returns the foreground clip rect of the layer in the document's coordinate space. |
| IntRect selfClipRect() const; // Returns the background clip rect of the layer in the document's coordinate space. |
| |
| bool intersectsDamageRect(const IntRect& layerBounds, const IntRect& damageRect, const RenderLayer* rootLayer) const; |
| |
| // Bounding box relative to some ancestor layer. |
| IntRect boundingBox(const RenderLayer* rootLayer) const; |
| // Bounding box in the coordinates of this layer. |
| IntRect localBoundingBox() const; |
| // Bounding box relative to the root. |
| IntRect absoluteBoundingBox() const; |
| |
| void updateHoverActiveState(const HitTestRequest&, HitTestResult&); |
| |
| // Return a cached repaint rect, computed relative to the layer renderer's containerForRepaint. |
| IntRect repaintRect() const { return m_repaintRect; } |
| IntRect repaintRectIncludingDescendants() const; |
| void computeRepaintRects(); |
| void updateRepaintRectsAfterScroll(bool fixed = false); |
| void setNeedsFullRepaint(bool f = true) { m_needsFullRepaint = f; } |
| |
| int staticInlinePosition() const { return m_staticInlinePosition; } |
| int staticBlockPosition() const { return m_staticBlockPosition; } |
| void setStaticInlinePosition(int position) { m_staticInlinePosition = position; } |
| void setStaticBlockPosition(int position) { m_staticBlockPosition = position; } |
| |
| bool hasTransform() const { return renderer()->hasTransform(); } |
| // Note that this transform has the transform-origin baked in. |
| TransformationMatrix* transform() const { return m_transform.get(); } |
| // currentTransform computes a transform which takes accelerated animations into account. The |
| // resulting transform has transform-origin baked in. If the layer does not have a transform, |
| // returns the identity matrix. |
| TransformationMatrix currentTransform() const; |
| TransformationMatrix renderableTransform(PaintBehavior) const; |
| |
| // Get the perspective transform, which is applied to transformed sublayers. |
| // Returns true if the layer has a -webkit-perspective. |
| // Note that this transform has the perspective-origin baked in. |
| TransformationMatrix perspectiveTransform() const; |
| FloatPoint perspectiveOrigin() const; |
| bool preserves3D() const { return renderer()->style()->transformStyle3D() == TransformStyle3DPreserve3D; } |
| bool has3DTransform() const { return m_transform && !m_transform->isAffine(); } |
| |
| // Overloaded new operator. Derived classes must override operator new |
| // in order to allocate out of the RenderArena. |
| void* operator new(size_t, RenderArena*) throw(); |
| |
| // Overridden to prevent the normal delete from being called. |
| void operator delete(void*, size_t); |
| |
| #if USE(ACCELERATED_COMPOSITING) |
| bool isComposited() const { return m_backing != 0; } |
| bool hasCompositedMask() const; |
| RenderLayerBacking* backing() const { return m_backing.get(); } |
| RenderLayerBacking* ensureBacking(); |
| void clearBacking(); |
| virtual GraphicsLayer* layerForHorizontalScrollbar() const; |
| virtual GraphicsLayer* layerForVerticalScrollbar() const; |
| virtual GraphicsLayer* layerForScrollCorner() const; |
| #else |
| bool isComposited() const { return false; } |
| bool hasCompositedMask() const { return false; } |
| #endif |
| |
| bool paintsWithTransparency(PaintBehavior paintBehavior) const |
| { |
| return isTransparent() && ((paintBehavior & PaintBehaviorFlattenCompositingLayers) || !isComposited()); |
| } |
| |
| bool paintsWithTransform(PaintBehavior) const; |
| |
| bool containsDirtyOverlayScrollbars() const { return m_containsDirtyOverlayScrollbars; } |
| void setContainsDirtyOverlayScrollbars(bool dirtyScrollbars) { m_containsDirtyOverlayScrollbars = dirtyScrollbars; } |
| |
| #if ENABLE(ANDROID_OVERFLOW_SCROLL) |
| bool hasOverflowScroll() const { return m_hasOverflowScroll; } |
| bool hasOverflowParent() const; |
| #endif |
| |
| private: |
| // The normal operator new is disallowed on all render objects. |
| void* operator new(size_t) throw(); |
| |
| void setNextSibling(RenderLayer* next) { m_next = next; } |
| void setPreviousSibling(RenderLayer* prev) { m_previous = prev; } |
| void setParent(RenderLayer* parent); |
| void setFirstChild(RenderLayer* first) { m_first = first; } |
| void setLastChild(RenderLayer* last) { m_last = last; } |
| |
| int renderBoxX() const { return renderer()->isBox() ? toRenderBox(renderer())->x() : 0; } |
| int renderBoxY() const { return renderer()->isBox() ? toRenderBox(renderer())->y() : 0; } |
| |
| void collectLayers(Vector<RenderLayer*>*&, Vector<RenderLayer*>*&); |
| |
| void updateLayerListsIfNeeded(); |
| void updateCompositingAndLayerListsIfNeeded(); |
| |
| enum PaintLayerFlag { |
| PaintLayerHaveTransparency = 1, |
| PaintLayerAppliedTransform = 1 << 1, |
| PaintLayerTemporaryClipRects = 1 << 2, |
| PaintLayerPaintingReflection = 1 << 3, |
| PaintLayerPaintingOverlayScrollbars = 1 << 4 |
| }; |
| |
| typedef unsigned PaintLayerFlags; |
| |
| void paintLayer(RenderLayer* rootLayer, GraphicsContext*, const IntRect& paintDirtyRect, |
| PaintBehavior, RenderObject* paintingRoot, OverlapTestRequestMap* = 0, |
| PaintLayerFlags = 0); |
| void paintList(Vector<RenderLayer*>*, RenderLayer* rootLayer, GraphicsContext* p, |
| const IntRect& paintDirtyRect, PaintBehavior, |
| RenderObject* paintingRoot, OverlapTestRequestMap*, |
| PaintLayerFlags); |
| void paintPaginatedChildLayer(RenderLayer* childLayer, RenderLayer* rootLayer, GraphicsContext*, |
| const IntRect& paintDirtyRect, PaintBehavior, |
| RenderObject* paintingRoot, OverlapTestRequestMap*, |
| PaintLayerFlags); |
| void paintChildLayerIntoColumns(RenderLayer* childLayer, RenderLayer* rootLayer, GraphicsContext*, |
| const IntRect& paintDirtyRect, PaintBehavior, |
| RenderObject* paintingRoot, OverlapTestRequestMap*, |
| PaintLayerFlags, const Vector<RenderLayer*>& columnLayers, size_t columnIndex); |
| |
| RenderLayer* hitTestLayer(RenderLayer* rootLayer, RenderLayer* containerLayer, const HitTestRequest& request, HitTestResult& result, |
| const IntRect& hitTestRect, const IntPoint& hitTestPoint, bool appliedTransform, |
| const HitTestingTransformState* transformState = 0, double* zOffset = 0); |
| RenderLayer* hitTestList(Vector<RenderLayer*>*, RenderLayer* rootLayer, const HitTestRequest& request, HitTestResult& result, |
| const IntRect& hitTestRect, const IntPoint& hitTestPoint, |
| const HitTestingTransformState* transformState, double* zOffsetForDescendants, double* zOffset, |
| const HitTestingTransformState* unflattenedTransformState, bool depthSortDescendants); |
| RenderLayer* hitTestPaginatedChildLayer(RenderLayer* childLayer, RenderLayer* rootLayer, const HitTestRequest& request, HitTestResult& result, |
| const IntRect& hitTestRect, const IntPoint& hitTestPoint, |
| const HitTestingTransformState* transformState, double* zOffset); |
| RenderLayer* hitTestChildLayerColumns(RenderLayer* childLayer, RenderLayer* rootLayer, const HitTestRequest& request, HitTestResult& result, |
| const IntRect& hitTestRect, const IntPoint& hitTestPoint, |
| const HitTestingTransformState* transformState, double* zOffset, |
| const Vector<RenderLayer*>& columnLayers, size_t columnIndex); |
| |
| PassRefPtr<HitTestingTransformState> createLocalTransformState(RenderLayer* rootLayer, RenderLayer* containerLayer, |
| const IntRect& hitTestRect, const IntPoint& hitTestPoint, |
| const HitTestingTransformState* containerTransformState) const; |
| |
| bool hitTestContents(const HitTestRequest&, HitTestResult&, const IntRect& layerBounds, const IntPoint& hitTestPoint, HitTestFilter) const; |
| |
| void computeScrollDimensions(bool* needHBar = 0, bool* needVBar = 0); |
| |
| bool shouldBeNormalFlowOnly() const; |
| |
| // ScrollableArea interface |
| virtual int scrollSize(ScrollbarOrientation orientation) const; |
| virtual void setScrollOffset(const IntPoint&); |
| virtual int scrollPosition(Scrollbar*) const; |
| virtual void invalidateScrollbarRect(Scrollbar*, const IntRect&); |
| virtual void invalidateScrollCornerRect(const IntRect&); |
| virtual bool isActive() const; |
| virtual bool isScrollCornerVisible() const; |
| virtual IntRect scrollCornerRect() const; |
| virtual IntRect convertFromScrollbarToContainingView(const Scrollbar*, const IntRect&) const; |
| virtual IntRect convertFromContainingViewToScrollbar(const Scrollbar*, const IntRect&) const; |
| virtual IntPoint convertFromScrollbarToContainingView(const Scrollbar*, const IntPoint&) const; |
| virtual IntPoint convertFromContainingViewToScrollbar(const Scrollbar*, const IntPoint&) const; |
| virtual IntSize contentsSize() const; |
| virtual int visibleHeight() const; |
| virtual int visibleWidth() const; |
| virtual IntPoint currentMousePosition() const; |
| virtual bool shouldSuspendScrollAnimations() const; |
| |
| // Rectangle encompassing the scroll corner and resizer rect. |
| IntRect scrollCornerAndResizerRect() const; |
| |
| virtual void disconnectFromPage() { m_page = 0; } |
| |
| // NOTE: This should only be called by the overriden setScrollOffset from ScrollableArea. |
| void scrollTo(int x, int y); |
| |
| IntSize scrollbarOffset(const Scrollbar*) const; |
| |
| void updateOverflowStatus(bool horizontalOverflow, bool verticalOverflow); |
| |
| void childVisibilityChanged(bool newVisibility); |
| void dirtyVisibleDescendantStatus(); |
| void updateVisibilityStatus(); |
| |
| // This flag is computed by RenderLayerCompositor, which knows more about 3d hierarchies than we do. |
| void setHas3DTransformedDescendant(bool b) { m_has3DTransformedDescendant = b; } |
| bool has3DTransformedDescendant() const { return m_has3DTransformedDescendant; } |
| |
| void dirty3DTransformedDescendantStatus(); |
| // Both updates the status, and returns true if descendants of this have 3d. |
| bool update3DTransformedDescendantStatus(); |
| |
| Node* enclosingElement() const; |
| |
| void createReflection(); |
| void removeReflection(); |
| |
| void updateReflectionStyle(); |
| bool paintingInsideReflection() const { return m_paintingInsideReflection; } |
| void setPaintingInsideReflection(bool b) { m_paintingInsideReflection = b; } |
| |
| void parentClipRects(const RenderLayer* rootLayer, ClipRects&, bool temporaryClipRects = false, OverlayScrollbarSizeRelevancy = IgnoreOverlayScrollbarSize) const; |
| IntRect backgroundClipRect(const RenderLayer* rootLayer, bool temporaryClipRects, OverlayScrollbarSizeRelevancy = IgnoreOverlayScrollbarSize) const; |
| |
| RenderLayer* enclosingTransformedAncestor() const; |
| |
| // Convert a point in absolute coords into layer coords, taking transforms into account |
| IntPoint absoluteToContents(const IntPoint&) const; |
| |
| void positionOverflowControls(int tx, int ty); |
| void updateScrollCornerStyle(); |
| void updateResizerStyle(); |
| |
| void updatePagination(); |
| bool isPaginated() const { return m_isPaginated; } |
| |
| #if USE(ACCELERATED_COMPOSITING) |
| bool hasCompositingDescendant() const { return m_hasCompositingDescendant; } |
| void setHasCompositingDescendant(bool b) { m_hasCompositingDescendant = b; } |
| |
| bool mustOverlapCompositedLayers() const { return m_mustOverlapCompositedLayers; } |
| void setMustOverlapCompositedLayers(bool b) { m_mustOverlapCompositedLayers = b; } |
| #if ENABLE(COMPOSITED_FIXED_ELEMENTS) |
| bool shouldComposite() { return m_shouldComposite; } |
| void setShouldComposite(bool b) { m_shouldComposite = b; } |
| #endif |
| #endif |
| |
| void updateContentsScale(float); |
| |
| friend class RenderLayerBacking; |
| friend class RenderLayerCompositor; |
| friend class RenderBoxModelObject; |
| |
| // Only safe to call from RenderBoxModelObject::destroyLayer(RenderArena*) |
| void destroy(RenderArena*); |
| |
| int overflowTop() const; |
| int overflowBottom() const; |
| int overflowLeft() const; |
| int overflowRight() const; |
| |
| protected: |
| RenderBoxModelObject* m_renderer; |
| |
| RenderLayer* m_parent; |
| RenderLayer* m_previous; |
| RenderLayer* m_next; |
| RenderLayer* m_first; |
| RenderLayer* m_last; |
| |
| IntRect m_repaintRect; // Cached repaint rects. Used by layout. |
| IntRect m_outlineBox; |
| |
| // Our current relative position offset. |
| int m_relX; |
| int m_relY; |
| |
| // Our (x,y) coordinates are in our parent layer's coordinate space. |
| int m_x; |
| int m_y; |
| |
| // The layer's width/height |
| int m_width; |
| int m_height; |
| |
| // Our scroll offsets if the view is scrolled. |
| int m_scrollX; |
| int m_scrollY; |
| |
| int m_scrollLeftOverflow; |
| int m_scrollTopOverflow; |
| |
| // The width/height of our scrolled area. |
| int m_scrollWidth; |
| int m_scrollHeight; |
| |
| // For layers with overflow, we have a pair of scrollbars. |
| RefPtr<Scrollbar> m_hBar; |
| RefPtr<Scrollbar> m_vBar; |
| |
| // Keeps track of whether the layer is currently resizing, so events can cause resizing to start and stop. |
| bool m_inResizeMode; |
| |
| // For layers that establish stacking contexts, m_posZOrderList holds a sorted list of all the |
| // descendant layers within the stacking context that have z-indices of 0 or greater |
| // (auto will count as 0). m_negZOrderList holds descendants within our stacking context with negative |
| // z-indices. |
| Vector<RenderLayer*>* m_posZOrderList; |
| Vector<RenderLayer*>* m_negZOrderList; |
| |
| // This list contains child layers that cannot create stacking contexts. For now it is just |
| // overflow layers, but that may change in the future. |
| Vector<RenderLayer*>* m_normalFlowList; |
| |
| ClipRects* m_clipRects; // Cached clip rects used when painting and hit testing. |
| #ifndef NDEBUG |
| const RenderLayer* m_clipRectsRoot; // Root layer used to compute clip rects. |
| #endif |
| |
| bool m_scrollDimensionsDirty : 1; |
| bool m_zOrderListsDirty : 1; |
| bool m_normalFlowListDirty: 1; |
| bool m_isNormalFlowOnly : 1; |
| |
| bool m_usedTransparency : 1; // Tracks whether we need to close a transparent layer, i.e., whether |
| // we ended up painting this layer or any descendants (and therefore need to |
| // blend). |
| bool m_paintingInsideReflection : 1; // A state bit tracking if we are painting inside a replica. |
| bool m_inOverflowRelayout : 1; |
| bool m_needsFullRepaint : 1; |
| |
| bool m_overflowStatusDirty : 1; |
| bool m_horizontalOverflow : 1; |
| bool m_verticalOverflow : 1; |
| bool m_visibleContentStatusDirty : 1; |
| bool m_hasVisibleContent : 1; |
| bool m_visibleDescendantStatusDirty : 1; |
| bool m_hasVisibleDescendant : 1; |
| |
| bool m_isPaginated : 1; // If we think this layer is split by a multi-column ancestor, then this bit will be set. |
| |
| bool m_3DTransformedDescendantStatusDirty : 1; |
| bool m_has3DTransformedDescendant : 1; // Set on a stacking context layer that has 3D descendants anywhere |
| // in a preserves3D hierarchy. Hint to do 3D-aware hit testing. |
| #if USE(ACCELERATED_COMPOSITING) |
| bool m_hasCompositingDescendant : 1; // In the z-order tree. |
| bool m_mustOverlapCompositedLayers : 1; |
| #if ENABLE(COMPOSITED_FIXED_ELEMENTS) |
| bool m_shouldComposite : 1; |
| #endif |
| #endif |
| |
| bool m_containsDirtyOverlayScrollbars : 1; |
| #if ENABLE(ANDROID_OVERFLOW_SCROLL) |
| bool m_hasOverflowScroll : 1; |
| #endif |
| |
| IntPoint m_cachedOverlayScrollbarOffset; |
| |
| RenderMarquee* m_marquee; // Used by layers with overflow:marquee |
| |
| // Cached normal flow values for absolute positioned elements with static left/top values. |
| int m_staticInlinePosition; |
| int m_staticBlockPosition; |
| |
| OwnPtr<TransformationMatrix> m_transform; |
| |
| // May ultimately be extended to many replicas (with their own paint order). |
| RenderReplica* m_reflection; |
| |
| // Renderers to hold our custom scroll corner and resizer. |
| RenderScrollbarPart* m_scrollCorner; |
| RenderScrollbarPart* m_resizer; |
| |
| private: |
| IntRect m_blockSelectionGapsBounds; |
| |
| #if USE(ACCELERATED_COMPOSITING) |
| OwnPtr<RenderLayerBacking> m_backing; |
| #endif |
| |
| Page* m_page; |
| }; |
| |
| } // namespace WebCore |
| |
| #ifndef NDEBUG |
| // Outside the WebCore namespace for ease of invocation from gdb. |
| void showLayerTree(const WebCore::RenderLayer*); |
| void showLayerTree(const WebCore::RenderObject*); |
| #endif |
| |
| #endif // RenderLayer_h |
