CachedRoot.h revision a2aaeda3cab40ff823fc40ebff51b828d1a9bc1c 
1/*
2 * Copyright 2007, The Android Open Source Project
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *  * Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 *  * Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#ifndef CachedRoot_H
27#define CachedRoot_H
28
29#include "CachedFrame.h"
30#include "IntRect.h"
31#include "SkPicture.h"
32#include "wtf/Vector.h"
33
34class SkRect;
35
36namespace android {
37
38class CachedHistory;
39class CachedNode;
40
41class CachedRoot : public CachedFrame {
42public:
43    bool adjustForScroll(BestData* , Direction , WebCore::IntPoint* scrollPtr,
44        bool findClosest);
45    int checkForCenter(int x, int y) const;
46    void checkForJiggle(int* ) const;
47    bool checkRings(const WTF::Vector<WebCore::IntRect>& rings,
48        const WebCore::IntRect& bounds) const;
49    WebCore::IntPoint cursorLocation() const;
50    int documentHeight() { return mContents.height(); }
51    int documentWidth() { return mContents.width(); }
52    const CachedNode* findAt(const WebCore::IntRect& , const CachedFrame** ,
53        int* x, int* y, bool checkForHidden) const;
54    const WebCore::IntRect& focusBounds() const { return mFocusBounds; }
55    WebCore::IntPoint focusLocation() const;
56    SkPicture* getPicture() { return mPicture; }
57    int getAndResetSelectionEnd();
58    int getAndResetSelectionStart();
59    int getBlockLeftEdge(int x, int y, float scale) const;
60    void getSimulatedMousePosition(WebCore::IntPoint* ) const;
61    void init(WebCore::Frame* , CachedHistory* );
62    bool innerDown(const CachedNode* , BestData* ) const;
63    bool innerLeft(const CachedNode* , BestData* ) const;
64    void innerMove(const CachedNode* ,BestData* bestData, Direction ,
65        WebCore::IntPoint* scroll, bool firstCall);
66    bool innerRight(const CachedNode* , BestData* ) const;
67    bool innerUp(const CachedNode* , BestData* ) const;
68    WebCore::String imageURI(int x, int y) const;
69    bool maskIfHidden(BestData* ) const;
70    const CachedNode* moveCursor(Direction , const CachedFrame** , WebCore::IntPoint* scroll);
71    void reset();
72    CachedHistory* rootHistory() const { return mHistory; }
73    bool scrollDelta(WebCore::IntRect& cursorRingBounds, Direction , int* delta);
74    const WebCore::IntRect& scrolledBounds() const { return mScrolledBounds; }
75    void setCursor(CachedFrame* , CachedNode* );
76    void setCachedFocus(CachedFrame* , CachedNode* );
77    void setFocusBounds(const WebCore::IntRect& r) { mFocusBounds = r; }
78    void setTextGeneration(int textGeneration) { mTextGeneration = textGeneration; }
79    void setMaxScroll(int x, int y) { mMaxXScroll = x; mMaxYScroll = y; }
80    void setPicture(SkPicture* picture) { mPicture = picture; }
81    void setScrollOnly(bool state) { mScrollOnly = state; }
82    void setSelection(int start, int end) { mSelectionStart = start; mSelectionEnd = end; }
83    void setupScrolledBounds() const { mScrolledBounds = mViewBounds; }
84    void setVisibleRect(const WebCore::IntRect& r) { mViewBounds = r; }
85    int textGeneration() const { return mTextGeneration; }
86    int width() const { return mPicture ? mPicture->width() : 0; }
87private:
88    CachedHistory* mHistory;
89    SkPicture* mPicture;
90    WebCore::IntRect mFocusBounds; // dom text input focus node bounds
91    mutable WebCore::IntRect mScrolledBounds; // view bounds + amount visible as result of scroll
92    int mTextGeneration;
93    int mMaxXScroll;
94    int mMaxYScroll;
95    // These two are ONLY used when the tree is rebuilt and the focus is a textfield/area
96    int mSelectionStart;
97    int mSelectionEnd;
98    bool mScrollOnly;
99#if DUMP_NAV_CACHE
100public:
101    class Debug {
102public:
103        CachedRoot* base() const;
104        void print() const;
105    } mDebug;
106#endif
107};
108
109}
110
111#endif
112