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Diffstat (limited to 'WebKit/android/nav/CachedFrame.h')
| -rw-r--r-- | WebKit/android/nav/CachedFrame.h | 228 |
1 files changed, 228 insertions, 0 deletions
diff --git a/WebKit/android/nav/CachedFrame.h b/WebKit/android/nav/CachedFrame.h new file mode 100644 index 0000000..8e77470 --- /dev/null +++ b/WebKit/android/nav/CachedFrame.h @@ -0,0 +1,228 @@ +/* + * Copyright 2007, The Android Open Source Project + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY + * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef CachedFrame_H +#define CachedFrame_H + +#include "CachedNode.h" +#include "IntRect.h" +#include "SkFixed.h" +#include "wtf/Vector.h" + +namespace WebCore { + class Frame; + class Node; +} + +namespace android { + +class CachedHistory; +class CachedRoot; + + // first node referenced by cache is always document +class CachedFrame { +public: + enum Direction { + UNINITIALIZED = -1, + LEFT, + RIGHT, + UP, + DOWN, + DIRECTION_COUNT, + DIRECTION_MASK = DIRECTION_COUNT - 1, + UP_DOWN = UP & DOWN, // mask and result + RIGHT_DOWN = RIGHT & DOWN, // mask and result + }; + enum Compare { + UNDECIDED = -1, + TEST_IS_BEST, + REJECT_TEST + }; + CachedFrame() {} + void add(CachedNode& node) { mCachedNodes.append(node); } + void addFrame(CachedFrame& child) { mCachedFrames.append(child); } + bool checkVisited(const CachedNode* , CachedFrame::Direction ) const; + size_t childCount() { return mCachedFrames.size(); } + void clearFocus(); + const CachedNode* currentFocus() const { return currentFocus(NULL); } + const CachedNode* currentFocus(const CachedFrame** ) const; + bool directionChange() const; + const CachedNode* document() const { return mCachedNodes.begin(); } + bool empty() const { return mCachedNodes.size() < 2; } // must have 1 past doc + const CachedNode* findBestAt(const WebCore::IntRect& , int* best, + const CachedNode** , const CachedFrame** , int* x, int* y) const; + const CachedFrame* findBestFrameAt(int x, int y) const; + const CachedNode* findBestHitAt(const WebCore::IntRect& , + int* best, const CachedFrame** , int* x, int* y) const; + bool finishInit(); + CachedFrame* firstChild() { return mCachedFrames.begin(); } + const CachedFrame* firstChild() const { return mCachedFrames.begin(); } + int focusIndex() const { return mFocus; } + void* framePointer() const { return mFrame; } + CachedNode* getIndex(int index) { return index >= 0 ? + &mCachedNodes[index] : NULL; } + const CachedFrame* hasFrame(const CachedNode* node) const; + int indexInParent() const { return mIndex; } + void init(const CachedRoot* root, int index, WebCore::Frame* frame); + const CachedFrame* lastChild() const { return &mCachedFrames.last(); } + CachedNode* lastNode() { return &mCachedNodes.last(); } + CachedFrame* lastChild() { return &mCachedFrames.last(); } + const CachedFrame* parent() const { return mParent; } + CachedFrame* parent() { return mParent; } + bool sameFrame(const CachedFrame* ) const; + void removeLast() { mCachedNodes.removeLast(); } + void resetClippedOut(); + void setContentsSize(int width, int height) { mContents.setWidth(width); + mContents.setHeight(height); } + void setData(); + bool setFocus(WebCore::Frame* , WebCore::Node* , int x, int y); + void setFocusIndex(int focusIndex) const { mFocus = focusIndex; } + void setLocalViewBounds(const WebCore::IntRect& bounds) { mLocalViewBounds = bounds; } + int size() { return mCachedNodes.size(); } + const CachedNode* validDocument() const; +protected: + struct BestData { + WebCore::IntRect mNodeBounds; + WebCore::IntRect mMouseBounds; + int mDistance; + int mSideDistance; + int mMajorDelta; // difference of center of object + // used only when leading and trailing edges contain another set of edges + int mMajorDelta2; // difference of leading edge (only used when center is same) + int mMajorButt; // checks for next cell butting up against or close to previous one + int mWorkingDelta; + int mWorkingDelta2; + int mNavDelta; + int mNavDelta2; + const CachedFrame* mFrame; + const CachedNode* mNode; + SkFixed mWorkingOverlap; // this and below are fuzzy answers instead of bools + SkFixed mNavOverlap; + SkFixed mPreferred; + bool mFocusChild; + bool mInNav; + bool mNavOutside; + bool mWorkingOutside; + int bottom() const { return bounds().bottom(); } + const WebCore::IntRect& bounds() const { return mNodeBounds; } + bool canBeReachedByAnotherDirection(); + int height() const { return bounds().height(); } + bool inOrSubsumesNav() const { return (mNavDelta ^ mNavDelta2) >= 0; } + bool inOrSubsumesWorking() const { return (mWorkingDelta ^ mWorkingDelta2) >= 0; } + int isContainer(BestData* ); + static SkFixed Overlap(int span, int left, int right); + void reset() { mNode = NULL; } + int right() const { return bounds().right(); } + void setDistances(); + bool setDownDirection(const CachedHistory* ); + bool setLeftDirection(const CachedHistory* ); + bool setRightDirection(const CachedHistory* ); + bool setUpDirection(const CachedHistory* ); + void setNavInclusion(int left, int right); + void setNavOverlap(int span, int left, int right); + void setWorkingInclusion(int left, int right); + void setWorkingOverlap(int span, int left, int right); + int width() const { return bounds().width(); } + int x() const { return bounds().x(); } + int y() const { return bounds().y(); } + }; + typedef const CachedNode* (CachedFrame::*MoveInDirection)( + const CachedNode* test, const CachedNode* limit, BestData* bestData, + const CachedNode* focus) const; + void adjustToTextColumn(int* delta) const; + static bool CheckBetween(Direction , const WebCore::IntRect& bestRect, + const WebCore::IntRect& prior, WebCore::IntRect* result); + bool checkBetween(BestData* , Direction ); + int compare(BestData& testData, const BestData& bestData, const + CachedNode* focus) const; + void findClosest(BestData* , Direction original, Direction test, + WebCore::IntRect* clip) const; + int frameNodeCommon(BestData& testData, const CachedNode* test, + BestData* bestData, BestData* originalData, + const CachedNode* focus) const; + int framePartCommon(BestData& testData, const CachedNode* test, + BestData* bestData, const CachedNode* focus) const; + const CachedNode* frameDown(const CachedNode* test, const CachedNode* limit, + BestData* , const CachedNode* focus) const; + const CachedNode* frameLeft(const CachedNode* test, const CachedNode* limit, + BestData* , const CachedNode* focus) const; + const CachedNode* frameRight(const CachedNode* test, const CachedNode* limit, + BestData* , const CachedNode* focus) const; + const CachedNode* frameUp(const CachedNode* test, const CachedNode* limit, + BestData* , const CachedNode* focus) const; + int minWorkingHorizontal() const; + int minWorkingVertical() const; + int maxWorkingHorizontal() const; + int maxWorkingVertical() const; + bool moveInFrame(MoveInDirection , const CachedNode* test, BestData* best, + const CachedNode* focus) const; + const WebCore::IntRect& _navBounds() const; + WebCore::IntRect mContents; + WebCore::IntRect mLocalViewBounds; + WebCore::IntRect mViewBounds; + WTF::Vector<CachedNode> mCachedNodes; + WTF::Vector<CachedFrame> mCachedFrames; + void* mFrame; // WebCore::Frame*, used only to compare pointers + CachedFrame* mParent; + int mIndex; // index within parent's array of children, or -1 if root + const CachedRoot* mRoot; + mutable int mFocus; +private: + CachedHistory* history() const; +#ifdef BROWSER_DEBUG +public: + CachedNode* find(WebCore::Node* ); // !!! probably debugging only + int mDebugIndex; + int mDebugLoopbackOffset; +#endif +#if !defined NDEBUG || DUMP_NAV_CACHE +public: + class Debug { +public: + Debug() { +#if DUMP_NAV_CACHE + mFrameName[0] = '\0'; +#endif +#if !defined NDEBUG + mInUse = true; +#endif + } +#if !defined NDEBUG + ~Debug() { mInUse = false; } + bool mInUse; +#endif +#if DUMP_NAV_CACHE + CachedFrame* base() const; + void print() const; + bool validate(const CachedNode* ) const; + char mFrameName[256]; +#endif + } mDebug; +#endif +}; + +} + +#endif |