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Diffstat (limited to 'WebKit/android/nav/CachedRoot.cpp')
| -rw-r--r-- | WebKit/android/nav/CachedRoot.cpp | 1068 |
1 files changed, 1068 insertions, 0 deletions
diff --git a/WebKit/android/nav/CachedRoot.cpp b/WebKit/android/nav/CachedRoot.cpp new file mode 100644 index 0000000..38f1477 --- /dev/null +++ b/WebKit/android/nav/CachedRoot.cpp @@ -0,0 +1,1068 @@ +/* + * Copyright 2007, The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include "CachedPrefix.h" +#include "CachedHistory.h" +#include "CachedNode.h" +#include "SkBitmap.h" +#include "SkBounder.h" +#include "SkCanvas.h" +#include "SkPixelRef.h" +#include "SkRegion.h" + +#include "CachedRoot.h" + +#ifdef DUMP_NAV_CACHE_USING_PRINTF + extern android::Mutex gWriteLogMutex; +#endif + +namespace android { + +class CommonCheck : public SkBounder { +public: + enum Type { + kNo_Type, + kDrawBitmap_Type, + kDrawGlyph_Type, + kDrawPaint_Type, + kDrawPath_Type, + kDrawPicture_Type, + kDrawPoints_Type, + kDrawPosText_Type, + kDrawPosTextH_Type, + kDrawRect_Type, + kDrawSprite_Type, + kDrawText_Type, + kDrawTextOnPath_Type + }; + + static bool isTextType(Type t) { + return t == kDrawPosTextH_Type || t == kDrawText_Type; + } + + CommonCheck() : mType(kNo_Type), mAllOpaque(true), mIsOpaque(true) { + setEmpty(); + } + + bool doRect(Type type) { + mType = type; + return doIRect(mUnion); + } + + bool joinGlyphs(const SkIRect& rect) { + bool isGlyph = mType == kDrawGlyph_Type; + if (isGlyph) + mUnion.join(rect); + return isGlyph; + } + + void setAllOpaque(bool opaque) { mAllOpaque = opaque; } + void setEmpty() { mUnion.setEmpty(); } + void setIsOpaque(bool opaque) { mIsOpaque = opaque; } + void setType(Type type) { mType = type; } + + Type mType; + SkIRect mUnion; + bool mAllOpaque; + bool mIsOpaque; +}; + +#if DEBUG_NAV_UI && !defined BROWSER_DEBUG + static const char* TypeNames[] = { + "kNo_Type", + "kDrawBitmap_Type", + "kDrawGlyph_Type", + "kDrawPaint_Type", + "kDrawPath_Type", + "kDrawPicture_Type", + "kDrawPoints_Type", + "kDrawPosText_Type", + "kDrawPosTextH_Type", + "kDrawRect_Type", + "kDrawSprite_Type", + "kDrawText_Type", + "kDrawTextOnPath_Type" + }; +#endif + +#define kMargin 16 +#define kSlop 2 + +class BoundsCheck : public CommonCheck { +public: + BoundsCheck() { + mAllDrawnIn.setEmpty(); + mLastAll.setEmpty(); + mLastOver.setEmpty(); + } + + static int Area(SkIRect test) { + return test.width() * test.height(); + } + + void checkLast() { + if (mAllDrawnIn.isEmpty()) + return; + if (mLastAll.isEmpty() || Area(mLastAll) < Area(mAllDrawnIn)) { + mLastAll = mAllDrawnIn; + mDrawnOver.setEmpty(); + } + mAllDrawnIn.setEmpty(); + } + + bool hidden() { + return (mLastAll.isEmpty() && mLastOver.isEmpty()) || + mDrawnOver.contains(mBounds); + } + + virtual bool onIRect(const SkIRect& rect) { + if (joinGlyphs(rect)) + return false; + bool interestingType = mType == kDrawBitmap_Type || + mType == kDrawRect_Type || isTextType(mType); + if (SkIRect::Intersects(mBounds, rect) == false) { +#if DEBUG_NAV_UI && !defined BROWSER_DEBUG + LOGD("%s (no intersect) rect={%d,%d,%d,%d} mType=%s\n", __FUNCTION__, + rect.fLeft, rect.fTop, rect.fRight, rect.fBottom, + TypeNames[mType]); +#endif + if (interestingType) + checkLast(); + return false; + } + if (interestingType == false) + return false; + if (mBoundsSlop.contains(rect) || + (mBounds.fLeft == rect.fLeft && mBounds.fRight == rect.fRight && + mBounds.fTop >= rect.fTop && mBounds.fBottom <= rect.fBottom) || + (mBounds.fTop == rect.fTop && mBounds.fBottom == rect.fBottom && + mBounds.fLeft >= rect.fLeft && mBounds.fRight <= rect.fRight)) { + mDrawnOver.setEmpty(); + mAllDrawnIn.join(rect); +#if DEBUG_NAV_UI && !defined BROWSER_DEBUG + LOGD("%s (contains) rect={%d,%d,%d,%d}" + " mAllDrawnIn={%d,%d,%d,%d} mType=%s\n", __FUNCTION__, + rect.fLeft, rect.fTop, rect.fRight, rect.fBottom, + mAllDrawnIn.fLeft, mAllDrawnIn.fTop, mAllDrawnIn.fRight, mAllDrawnIn.fBottom, + TypeNames[mType]); +#endif + } else { + checkLast(); + if (!isTextType(mType)) { + if ( +#if 0 +// should the opaqueness of the bitmap disallow its ability to draw over? +// not sure that this test is needed + (mType != kDrawBitmap_Type || + (mIsOpaque && mAllOpaque)) && +#endif + mLastAll.isEmpty() == false) + mDrawnOver.op(rect, SkRegion::kUnion_Op); + } else { +// FIXME +// sometimes the text is not drawn entirely inside the focus area, even though +// it is the correct text. Until I figure out why, I allow text drawn at the +// end that is not covered up by something else to represent the focusable link +// example that triggers this that should be figured out: +// http://cdn.labpixies.com/campaigns/blackjack/blackjack.html?lang=en&country=US&libs=assets/feature/core +// ( http://tinyurl.com/ywsyzb ) + mLastOver = rect; + } +#if DEBUG_NAV_UI && !defined BROWSER_DEBUG + const SkIRect& drawnOver = mDrawnOver.getBounds(); + LOGD("%s (overlaps) rect={%d,%d,%d,%d}" + " mDrawnOver={%d,%d,%d,%d} mType=%s mIsOpaque=%s mAllOpaque=%s\n", __FUNCTION__, + rect.fLeft, rect.fTop, rect.fRight, rect.fBottom, + drawnOver.fLeft, drawnOver.fTop, drawnOver.fRight, drawnOver.fBottom, + TypeNames[mType], mIsOpaque ? "true" : "false", mAllOpaque ? "true" : "false"); +#endif + } + return false; + } + + SkIRect mBounds; + SkIRect mBoundsSlop; + SkRegion mDrawnOver; + SkIRect mLastOver; + SkIRect mAllDrawnIn; + SkIRect mLastAll; +}; + +class BoundsCanvas : public SkCanvas { +public: + + BoundsCanvas(CommonCheck* bounder) : mBounder(*bounder) { + mTransparentLayer = 0; + setBounder(bounder); + } + + virtual ~BoundsCanvas() { + setBounder(NULL); + } + + virtual void drawPaint(const SkPaint& paint) { + mBounder.setType(CommonCheck::kDrawPaint_Type); + SkCanvas::drawPaint(paint); + } + + virtual void drawPoints(PointMode mode, size_t count, const SkPoint pts[], + const SkPaint& paint) { + mBounder.setType(CommonCheck::kDrawPoints_Type); + SkCanvas::drawPoints(mode, count, pts, paint); + } + + virtual void drawRect(const SkRect& rect, const SkPaint& paint) { + mBounder.setType(CommonCheck::kDrawRect_Type); + SkCanvas::drawRect(rect, paint); + } + + virtual void drawPath(const SkPath& path, const SkPaint& paint) { + mBounder.setType(CommonCheck::kDrawPath_Type); + SkCanvas::drawPath(path, paint); + } + + virtual void commonDrawBitmap(const SkBitmap& bitmap, + const SkMatrix& matrix, const SkPaint& paint) { + mBounder.setType(CommonCheck::kDrawBitmap_Type); + mBounder.setIsOpaque(bitmap.isOpaque()); + SkCanvas::commonDrawBitmap(bitmap, matrix, paint); + } + + virtual void drawSprite(const SkBitmap& bitmap, int left, int top, + const SkPaint* paint = NULL) { + mBounder.setType(CommonCheck::kDrawSprite_Type); + mBounder.setIsOpaque(bitmap.isOpaque()); + SkCanvas::drawSprite(bitmap, left, top, paint); + } + + virtual void drawText(const void* text, size_t byteLength, SkScalar x, + SkScalar y, const SkPaint& paint) { + mBounder.setEmpty(); + mBounder.setType(CommonCheck::kDrawGlyph_Type); + SkCanvas::drawText(text, byteLength, x, y, paint); + mBounder.doRect(CommonCheck::kDrawText_Type); + } + + virtual void drawPosText(const void* text, size_t byteLength, + const SkPoint pos[], const SkPaint& paint) { + mBounder.setEmpty(); + mBounder.setType(CommonCheck::kDrawGlyph_Type); + SkCanvas::drawPosText(text, byteLength, pos, paint); + mBounder.doRect(CommonCheck::kDrawPosText_Type); + } + + virtual void drawPosTextH(const void* text, size_t byteLength, + const SkScalar xpos[], SkScalar constY, + const SkPaint& paint) { + mBounder.setEmpty(); + mBounder.setType(CommonCheck::kDrawGlyph_Type); + SkCanvas::drawPosTextH(text, byteLength, xpos, constY, paint); + if (mBounder.mUnion.isEmpty()) + return; + SkPaint::FontMetrics metrics; + paint.getFontMetrics(&metrics); + SkPoint upDown[2] = { {xpos[0], constY + metrics.fAscent}, + {xpos[0], constY + metrics.fDescent} }; + const SkMatrix& matrix = getTotalMatrix(); + matrix.mapPoints(upDown, 2); + if (upDown[0].fX == upDown[1].fX) { + mBounder.mUnion.fTop = SkScalarFloor(upDown[0].fY); + mBounder.mUnion.fBottom = SkScalarFloor(upDown[1].fY); + } + mBounder.doRect(CommonCheck::kDrawPosTextH_Type); + } + + virtual void drawTextOnPath(const void* text, size_t byteLength, + const SkPath& path, const SkMatrix* matrix, + const SkPaint& paint) { + mBounder.setEmpty(); + mBounder.setType(CommonCheck::kDrawGlyph_Type); + SkCanvas::drawTextOnPath(text, byteLength, path, matrix, paint); + mBounder.doRect(CommonCheck::kDrawTextOnPath_Type); + } + + virtual void drawPicture(SkPicture& picture) { + mBounder.setType(CommonCheck::kDrawPicture_Type); + SkCanvas::drawPicture(picture); + } + + virtual int saveLayer(const SkRect* bounds, const SkPaint* paint, + SaveFlags flags) { + int depth = SkCanvas::saveLayer(bounds, paint, flags); + if (mTransparentLayer == 0 && paint && paint->getAlpha() < 255) { + mTransparentLayer = depth; + mBounder.setAllOpaque(false); + } + return depth; + } + + virtual void restore() { + int depth = getSaveCount(); + if (depth == mTransparentLayer) { + mTransparentLayer = 0; + mBounder.setAllOpaque(true); + } + SkCanvas::restore(); + } + + int mTransparentLayer; + CommonCheck& mBounder; +}; + +/* +CenterCheck examines the text in a picture, within a viewable rectangle, +and returns via center() the optimal amount to scroll in x to display the +paragraph of text. + +The caller of CenterCheck has configured (but not allocated) a bitmap +the height and three times the width of the view. The picture is drawn centered +in the bitmap, so text that would be revealed, if the view was scrolled up to +a view-width to the left or right, is considered. +*/ +class CenterCheck : public CommonCheck { +public: + CenterCheck(int x, int y, int width) : mX(x), mY(y), + mHitLeft(x), mHitRight(x), mMostLeft(INT_MAX), mMostRight(-INT_MAX), + mViewLeft(width), mViewRight(width << 1) { + mHit.set(x - CENTER_SLOP, y - CENTER_SLOP, + x + CENTER_SLOP, y + CENTER_SLOP); + mPartial.setEmpty(); + } + + int center() { + doRect(); // process the final line of text + /* If the touch coordinates aren't near any text, return 0 */ + if (mHitLeft == mHitRight) { + DBG_NAV_LOGD("abort: mHitLeft=%d ==mHitRight", mHitLeft); + return 0; + } + int leftOver = mHitLeft - mViewLeft; + int rightOver = mHitRight - mViewRight; + int center; + /* If the touched text is too large to entirely fit on the screen, + center it. */ + if (leftOver < 0 && rightOver > 0) { + center = (leftOver + rightOver) >> 1; + DBG_NAV_LOGD("overlap: leftOver=%d rightOver=%d center=%d", + leftOver, rightOver, center); + return center; + } + center = (mMostLeft + mMostRight) >> 1; // the paragraph center + if (leftOver > 0 && rightOver >= 0) { // off to the right + if (center > mMostLeft) // move to center loses left-most text? + center = mMostLeft; + } else if (rightOver < 0 && leftOver <= 0) { // off to the left + if (center < mMostRight) // move to center loses right-most text? + center = mMostRight; + } else { +#ifdef DONT_CENTER_IF_ALREADY_VISIBLE + center = 0; // paragraph is already fully visible +#endif + } + DBG_NAV_LOGD("scroll: leftOver=%d rightOver=%d center=%d", + leftOver, rightOver, center); + return center; + } + +protected: + virtual bool onIRect(const SkIRect& rect) { + if (joinGlyphs(rect)) // assembles glyphs into a text string + return false; + if (!isTextType(mType)) + return false; + /* Text on one line may be broken into several parts. Reassemble + the text into a rectangle before considering it. */ + if (rect.fTop < mPartial.fBottom && rect.fBottom > + mPartial.fTop && mPartial.fRight + CENTER_SLOP >= rect.fLeft) { + DBG_NAV_LOGD("join mPartial=(%d, %d, %d, %d) rect=(%d, %d, %d, %d)", + mPartial.fLeft, mPartial.fTop, mPartial.fRight, mPartial.fBottom, + rect.fLeft, rect.fTop, rect.fRight, rect.fBottom); + mPartial.join(rect); + return false; + } + if (mPartial.isEmpty() == false) + doRect(); // process the previous line of text + mPartial = rect; + return false; + } + + void doRect() + { + /* Record the outer bounds of the lines of text that was 'hit' by the + touch coordinates, given some slop */ + if (SkIRect::Intersects(mPartial, mHit)) { + if (mHitLeft > mPartial.fLeft) + mHitLeft = mPartial.fLeft; + if (mHitRight < mPartial.fRight) + mHitRight = mPartial.fRight; + DBG_NAV_LOGD("mHitLeft=%d mHitRight=%d", mHitLeft, mHitRight); + } + /* If the considered text is completely to the left or right of the + touch coordinates, skip it */ + if (mPartial.fLeft > mX || mPartial.fRight < mX) + return; + int leftOver = mPartial.fLeft - mViewLeft; + int rightOver = mPartial.fRight - mViewRight; + /* If leftOver <= 0, the text starts off the screen. + If rightOver >= 0, the text ends off the screen. + */ + if (leftOver <= 0 && rightOver >= 0) // discard wider than screen + return; +#ifdef DONT_CENTER_IF_ALREADY_VISIBLE + if (leftOver > 0 && rightOver < 0) // discard already visible + return; +#endif + /* record the smallest margins on the left and right */ + if (mMostLeft > leftOver) + mMostLeft = leftOver; + if (mMostRight < rightOver) + mMostRight = rightOver; + DBG_NAV_LOGD("leftOver=%d rightOver=%d mMostLeft=%d mMostRight=%d", + leftOver, rightOver, mMostLeft, mMostRight); + } + + static const int CENTER_SLOP = 10; // space between text parts and lines + /* const */ SkIRect mHit; // sloppy hit rectangle + SkIRect mPartial; // accumulated text bounds, per line + const int mX; // touch location + const int mY; + int mHitLeft; // touched text extremes + int mHitRight; + int mMostLeft; // paragraph extremes + int mMostRight; + const int mViewLeft; // middle third of 3x-wide view + const int mViewRight; +}; + +class ImageCanvas : public SkCanvas { +public: + ImageCanvas(SkBounder* bounder) : mURI(NULL) { + setBounder(bounder); + } + +// Currently webkit's bitmap draws always seem to be cull'd before this entry +// point is called, so we assume that any bitmap that gets here is inside our +// tiny clip (may not be true in the future) + virtual void commonDrawBitmap(const SkBitmap& bitmap, + const SkMatrix& , const SkPaint& ) { + SkPixelRef* pixelRef = bitmap.pixelRef(); + if (pixelRef != NULL) { + mURI = pixelRef->getURI(); + } + } + + const char* mURI; +}; + +class ImageCheck : public SkBounder { +public: + virtual bool onIRect(const SkIRect& rect) { + return false; + } +}; + +class JiggleCheck : public CommonCheck { +public: + JiggleCheck(int delta, int width) : mDelta(delta), mMaxX(width) { + mMaxJiggle = 0; + mMinX = mMinJiggle = abs(delta); + mMaxWidth = width + mMinX; + } + + int jiggle() { + if (mMinJiggle > mMaxJiggle) + return mDelta; + int avg = (mMinJiggle + mMaxJiggle + 1) >> 1; + return mDelta < 0 ? -avg : avg; + } + + virtual bool onIRect(const SkIRect& rect) { + if (joinGlyphs(rect)) + return false; + if (mType != kDrawBitmap_Type && !isTextType(mType)) + return false; + int min, max; + if (mDelta < 0) { + min = mMinX - rect.fLeft; + max = mMaxWidth - rect.fRight; + } else { + min = rect.fRight - mMaxX; + max = rect.fLeft; + } + if (min <= 0) + return false; + if (max >= mMinX) + return false; + if (mMinJiggle > min) + mMinJiggle = min; + if (mMaxJiggle < max) + mMaxJiggle = max; + return false; + } + + int mDelta; + int mMaxJiggle; + int mMaxX; + int mMinJiggle; + int mMinX; + int mMaxWidth; +}; + +bool CachedRoot::adjustForScroll(BestData* best, CachedFrame::Direction direction, + WebCore::IntPoint* scrollPtr, bool findClosest) +{ + WebCore::IntRect newOutset; + const CachedNode* newNode = best->mNode; + // see if there's a middle node + // if the middle node is in the visited list, + // or if none was computed and the newNode is in the visited list, + // treat result as NULL + if (newNode != NULL && findClosest) { + if (best->bounds().intersects(mHistory->mPriorBounds) == false && + checkBetween(best, direction)) + newNode = best->mNode; + if (findClosest && maskIfHidden(best)) { + innerMove(document(), best, direction, scrollPtr, false); + return true; + } + newNode->focusRingBounds(&newOutset); + } + int delta; + bool newNodeInView = scrollDelta(newOutset, direction, &delta); + if (delta && scrollPtr && (newNode == NULL || newNodeInView == false || + (best->mNavOutside && best->mWorkingOutside))) + *scrollPtr = WebCore::IntPoint(direction & UP_DOWN ? 0 : delta, + direction & UP_DOWN ? delta : 0); + return false; +} + + +int CachedRoot::checkForCenter(int x, int y) const +{ + int width = mViewBounds.width(); + CenterCheck centerCheck(x + width - mViewBounds.x(), y - mViewBounds.y(), + width); + BoundsCanvas checker(¢erCheck); + SkBitmap bitmap; + bitmap.setConfig(SkBitmap::kARGB_8888_Config, width * 3, + mViewBounds.height()); + checker.setBitmapDevice(bitmap); + checker.translate(SkIntToScalar(width - mViewBounds.x()), + SkIntToScalar(-mViewBounds.y())); + checker.drawPicture(*mPicture); + return centerCheck.center(); +} + +void CachedRoot::checkForJiggle(int* xDeltaPtr) const +{ + int xDelta = *xDeltaPtr; + JiggleCheck jiggleCheck(xDelta, mViewBounds.width()); + BoundsCanvas checker(&jiggleCheck); + SkBitmap bitmap; + int absDelta = abs(xDelta); + bitmap.setConfig(SkBitmap::kARGB_8888_Config, mViewBounds.width() + + absDelta, mViewBounds.height()); + checker.setBitmapDevice(bitmap); + checker.translate(SkIntToScalar(-mViewBounds.x() - + (xDelta < 0 ? xDelta : 0)), SkIntToScalar(-mViewBounds.y())); + checker.drawPicture(*mPicture); + *xDeltaPtr = jiggleCheck.jiggle(); +} + +const CachedNode* CachedRoot::findAt(const WebCore::IntRect& rect, + const CachedFrame** framePtr, int* x, int* y) const +{ + int best = INT_MAX; + (const_cast<CachedRoot*>(this))->resetClippedOut(); + const CachedNode* directHit = NULL; + const CachedNode* node = findBestAt(rect, &best, &directHit, framePtr, x, y); + DBG_NAV_LOGD("node=%d (%p)", node == NULL ? 0 : node->index(), + node == NULL ? NULL : node->nodePointer()); + if (node == NULL) { + node = findBestHitAt(rect, &best, framePtr, x, y); + DBG_NAV_LOGD("node=%d (%p)", node == NULL ? 0 : node->index(), + node == NULL ? NULL : node->nodePointer()); + } + if (node == NULL) { + *framePtr = findBestFrameAt(rect.x() + (rect.width() >> 1), + rect.y() + (rect.height() >> 1)); + } + return node; +} + +WebCore::IntPoint CachedRoot::focusLocation() const +{ + const WebCore::IntRect& bounds = mHistory->mNavBounds; + return WebCore::IntPoint(bounds.x() + (bounds.width() >> 1), + bounds.y() + (bounds.height() >> 1)); +} + +// These reset the values because we only want to get the selection the first time. +// After that, the selection is no longer accurate. +int CachedRoot::getAndResetSelectionEnd() +{ + int end = mSelectionEnd; + mSelectionEnd = -1; + return end; +} + +int CachedRoot::getAndResetSelectionStart() +{ + int start = mSelectionStart; + mSelectionStart = -1; + return start; +} + +void CachedRoot::getSimulatedMousePosition(WebCore::IntPoint* point) +{ +#ifndef NDEBUG + ASSERT(CachedFrame::mDebug.mInUse); +#endif + const WebCore::IntRect& mouseBounds = mHistory->mMouseBounds; + point->setX(mouseBounds.x() + (mouseBounds.width() >> 1)); + point->setY(mouseBounds.y() + (mouseBounds.height() >> 1)); +#if DEBUG_NAV_UI && !defined BROWSER_DEBUG + const WebCore::IntRect& navBounds = mHistory->mNavBounds; + LOGD("%s mHistory->mNavBounds={%d,%d,%d,%d} " + "mHistory->mMouseBounds={%d,%d,%d,%d} point={%d,%d}\n", __FUNCTION__, + navBounds.x(), navBounds.y(), navBounds.width(), navBounds.height(), + mouseBounds.x(), mouseBounds.y(), mouseBounds.width(), mouseBounds.height(), + point->x(), point->y()); +#endif +} + +void CachedRoot::init(WebCore::Frame* frame, CachedHistory* history) +{ + CachedFrame::init(this, -1, frame); + reset(); + mHistory = history; + mPicture = NULL; +} + +bool CachedRoot::innerDown(const CachedNode* test, BestData* bestData) const +{ + ASSERT(minWorkingVertical() >= mViewBounds.x()); + ASSERT(maxWorkingVertical() <= mViewBounds.right()); + setupScrolledBounds(); + // (line up) + mScrolledBounds.setHeight(mScrolledBounds.height() + mMaxYScroll); + int testTop = mScrolledBounds.y(); + int viewBottom = mViewBounds.bottom(); + if (mHistory->mFocusBounds.isEmpty() == false && + mHistory->mFocusBounds.bottom() > viewBottom && viewBottom < mContents.height()) + return false; + if (mHistory->mNavBounds.isEmpty() == false) { + int navTop = mHistory->mNavBounds.y(); + int scrollBottom; + if (testTop < navTop && navTop < (scrollBottom = mScrolledBounds.bottom())) { + mScrolledBounds.setHeight(scrollBottom - navTop); + mScrolledBounds.setY(navTop); + } + } + frameDown(test, NULL, bestData, currentFocus()); + return true; +} + +bool CachedRoot::innerLeft(const CachedNode* test, BestData* bestData) const +{ + ASSERT(minWorkingHorizontal() >= mViewBounds.y()); + ASSERT(maxWorkingHorizontal() <= mViewBounds.bottom()); + setupScrolledBounds(); + mScrolledBounds.setX(mScrolledBounds.x() - mMaxXScroll); + mScrolledBounds.setWidth(mScrolledBounds.width() + mMaxXScroll); + int testRight = mScrolledBounds.right(); + int viewLeft = mViewBounds.x(); + if (mHistory->mFocusBounds.isEmpty() == false && + mHistory->mFocusBounds.x() < viewLeft && viewLeft > mContents.x()) + return false; + if (mHistory->mNavBounds.isEmpty() == false) { + int navRight = mHistory->mNavBounds.right(); + int scrollLeft; + if (testRight > navRight && navRight > (scrollLeft = mScrolledBounds.x())) + mScrolledBounds.setWidth(navRight - scrollLeft); + } + frameLeft(test, NULL, bestData, currentFocus()); + return true; +} + + +void CachedRoot::innerMove(const CachedNode* node, BestData* bestData, + Direction direction, WebCore::IntPoint* scroll, bool firstCall) +{ + bestData->reset(); + mFocusChild = false; + bool outOfFocus = mFocus < 0; + bool firstTime = mHistory->didFirstLayout() && outOfFocus; +#if DEBUG_NAV_UI && !defined BROWSER_DEBUG + LOGD("%s mHistory->didFirstLayout()=%s && mFocus=%d\n", __FUNCTION__, + mHistory->didFirstLayout() ? "true" : "false", mFocus); +#endif + if (firstTime) + mHistory->reset(); + mHistory->setWorking(direction, currentFocus(), mViewBounds); + bool findClosest = false; + if (mScrollOnly == false) { + switch (direction) { + case LEFT: + if (outOfFocus) + mHistory->mNavBounds = WebCore::IntRect(mViewBounds.right(), + mViewBounds.y(), 1, mViewBounds.height()); + findClosest = innerLeft(node, bestData); + break; + case RIGHT: + if (outOfFocus) + mHistory->mNavBounds = WebCore::IntRect(mViewBounds.x() - 1, + mViewBounds.y(), 1, mViewBounds.height()); + findClosest = innerRight(node, bestData); + break; + case UP: + if (outOfFocus) + mHistory->mNavBounds = WebCore::IntRect(mViewBounds.x(), + mViewBounds.bottom(), mViewBounds.width(), 1); + findClosest = innerUp(node, bestData); + break; + case DOWN: + if (outOfFocus) + mHistory->mNavBounds = WebCore::IntRect(mViewBounds.x(), + mViewBounds.y() - 1, mViewBounds.width(), 1); + findClosest = innerDown(node, bestData); + break; + case UNINITIALIZED: + default: + ASSERT(0); + } + } + if (firstCall) + mHistory->mPriorBounds = mHistory->mNavBounds; // bounds always advances, even if new node is ultimately NULL + bestData->mMouseBounds = bestData->mNodeBounds; + if (adjustForScroll(bestData, direction, scroll, findClosest)) + return; + if (bestData->mNode != NULL) { + mHistory->addToVisited(bestData->mNode, direction); + mHistory->mNavBounds = mHistory->mFocusBounds = bestData->mNodeBounds; + mHistory->mMouseBounds = bestData->mMouseBounds; + } else if (scroll->x() != 0 || scroll->y() != 0) { + WebCore::IntRect newBounds = mHistory->mNavBounds; + int offsetX = scroll->x(); + int offsetY = scroll->y(); + newBounds.move(offsetX, offsetY); + if (mViewBounds.x() > newBounds.x()) + offsetX = mViewBounds.x() - mHistory->mNavBounds.x(); + else if (mViewBounds.right() < newBounds.right()) + offsetX = mViewBounds.right() - mHistory->mNavBounds.right(); + if (mViewBounds.y() > newBounds.y()) + offsetY = mViewBounds.y() - mHistory->mNavBounds.y(); + else if (mViewBounds.bottom() < newBounds.bottom()) + offsetY = mViewBounds.bottom() - mHistory->mNavBounds.bottom(); + mHistory->mNavBounds.move(offsetX, offsetY); + } + mHistory->setDidFirstLayout(false); +} + +bool CachedRoot::innerRight(const CachedNode* test, BestData* bestData) const +{ + ASSERT(minWorkingHorizontal() >= mViewBounds.y()); + ASSERT(maxWorkingHorizontal() <= mViewBounds.bottom()); + setupScrolledBounds(); + // (align) + mScrolledBounds.setWidth(mScrolledBounds.width() + mMaxXScroll); + int testLeft = mScrolledBounds.x(); + int viewRight = mViewBounds.right(); + if (mHistory->mFocusBounds.isEmpty() == false && + mHistory->mFocusBounds.right() > viewRight && viewRight < mContents.width()) + return false; + if (mHistory->mNavBounds.isEmpty() == false) { + int navLeft = mHistory->mNavBounds.x(); + int scrollRight; + if (testLeft < navLeft && navLeft < (scrollRight = mScrolledBounds.right())) { + mScrolledBounds.setWidth(scrollRight - navLeft); + mScrolledBounds.setX(navLeft); + } + } + frameRight(test, NULL, bestData, currentFocus()); + return true; +} + +bool CachedRoot::innerUp(const CachedNode* test, BestData* bestData) const +{ + ASSERT(minWorkingVertical() >= mViewBounds.x()); + ASSERT(maxWorkingVertical() <= mViewBounds.right()); + setupScrolledBounds(); + mScrolledBounds.setY(mScrolledBounds.y() - mMaxYScroll); + mScrolledBounds.setHeight(mScrolledBounds.height() + mMaxYScroll); + int testBottom = mScrolledBounds.bottom(); + int viewTop = mViewBounds.y(); + if (mHistory->mFocusBounds.isEmpty() == false && + mHistory->mFocusBounds.y() < viewTop && viewTop > mContents.y()) + return false; + if (mHistory->mNavBounds.isEmpty() == false) { + int navBottom = mHistory->mNavBounds.bottom(); + int scrollTop; + if (testBottom > navBottom && navBottom > (scrollTop = mScrolledBounds.y())) + mScrolledBounds.setHeight(navBottom - scrollTop); + } + frameUp(test, NULL, bestData, currentFocus()); + return true; +} + +WebCore::String CachedRoot::imageURI(int x, int y) const +{ + ImageCheck imageCheck; + ImageCanvas checker(&imageCheck); + SkBitmap bitmap; + bitmap.setConfig(SkBitmap::kARGB_8888_Config, 1, 1); + checker.setBitmapDevice(bitmap); + checker.translate(SkIntToScalar(-x), SkIntToScalar(-y)); + checker.drawPicture(*mPicture); + return WebCore::String(checker.mURI); +} + +bool CachedRoot::maskIfHidden(BestData* best) const +{ + if (mPicture == NULL) { +#if DEBUG_NAV_UI && !defined BROWSER_DEBUG + LOGD("%s missing picture\n", __FUNCTION__); +#endif + return false; + } + const CachedNode* bestNode = best->mNode; + if (bestNode->isUnclipped()) + return false; + // given the picture matching this nav cache + // create an SkBitmap with dimensions of the focus intersected w/ extended view + const WebCore::IntRect& nodeBounds = bestNode->getBounds(); + WebCore::IntRect bounds = nodeBounds; + bounds.intersect(mScrolledBounds); + int leftMargin = bounds.x() == nodeBounds.x() ? kMargin : 0; + int topMargin = bounds.y() == nodeBounds.y() ? kMargin : 0; + int rightMargin = bounds.right() == nodeBounds.right() ? kMargin : 0; + int bottomMargin = bounds.bottom() == nodeBounds.bottom() ? kMargin : 0; + bool unclipped = (leftMargin & topMargin & rightMargin & bottomMargin) != 0; + WebCore::IntRect marginBounds = nodeBounds; + marginBounds.inflate(kMargin); + marginBounds.intersect(mScrolledBounds); + BoundsCheck boundsCheck; + BoundsCanvas checker(&boundsCheck); + boundsCheck.mBounds.set(leftMargin, topMargin, + leftMargin + bounds.width(), topMargin + bounds.height()); + boundsCheck.mBoundsSlop = boundsCheck.mBounds; + boundsCheck.mBoundsSlop.inset(-kSlop, -kSlop); + SkBitmap bitmap; + bitmap.setConfig(SkBitmap::kARGB_8888_Config, marginBounds.width(), + marginBounds.height()); + checker.setBitmapDevice(bitmap); + // insert probes to be called when the data corresponding to this focus ring is drawn + // need to know if focus ring was generated by text, image, or parent (like div) + // ? need to know (like imdb menu bar) to give up sometimes (when?) + checker.translate(SkIntToScalar(leftMargin - bounds.x()), + SkIntToScalar(topMargin - bounds.y())); + checker.drawPicture(*mPicture); + boundsCheck.checkLast(); + // was it not drawn or clipped out? + if (boundsCheck.hidden()) { // if hidden, return false so that nav can try again + CachedNode* node = const_cast<CachedNode*>(best->mNode); +#if DEBUG_NAV_UI && !defined BROWSER_DEBUG + const SkIRect& m = boundsCheck.mBounds; + const SkIRect& s = boundsCheck.mBoundsSlop; + LOGD("%s hidden node:%p (%d) mBounds={%d,%d,%d,%d} mBoundsSlop=" + "{%d,%d,%d,%d}\n", __FUNCTION__, node, node->index(), + m.fLeft, m.fTop, m.fRight, m.fBottom, + s.fLeft, s.fTop, s.fRight, s.fBottom); + const SkIRect& o = boundsCheck.mDrawnOver.getBounds(); + const SkIRect& l = boundsCheck.mLastAll; + const SkIRect& u = boundsCheck.mUnion; + LOGD("%s hidden mDrawnOver={%d,%d,%d,%d} mLastAll={%d,%d,%d,%d}" + " mUnion={%d,%d,%d,%d}\n", __FUNCTION__, + o.fLeft, o.fTop, o.fRight, o.fBottom, + l.fLeft, l.fTop, l.fRight, l.fBottom, + u.fLeft, u.fTop, u.fRight, u.fBottom); + const SkIRect& a = boundsCheck.mAllDrawnIn; + const WebCore::IntRect& c = mScrolledBounds; + const WebCore::IntRect& b = nodeBounds; + LOGD("%s hidden mAllDrawnIn={%d,%d,%d,%d} mScrolledBounds={%d,%d,%d,%d}" + " nodeBounds={%d,%d,%d,%d}\n", __FUNCTION__, + a.fLeft, a.fTop, a.fRight, a.fBottom, + c.x(), c.y(), c.right(), c.bottom(), + b.x(), b.y(), b.right(), b.bottom()); + LOGD("%s bits.mWidth=%d bits.mHeight=%d transX=%d transY=%d\n", __FUNCTION__, + marginBounds.width(),marginBounds.height(), + kMargin - bounds.x(), kMargin - bounds.y()); +#endif + node->setDisabled(true); + node->setClippedOut(unclipped == false); + return true; + } + // was it partially occluded by later drawing? + // if partially occluded, modify the bounds so that the mouse click has a better x,y + const SkIRect& over = boundsCheck.mDrawnOver.getBounds(); + if (over.isEmpty() == false) { +#if DEBUG_NAV_UI && !defined BROWSER_DEBUG + SkIRect orig = boundsCheck.mBounds; +#endif + SkIRect& base = boundsCheck.mBounds; + if (base.fLeft < over.fRight && base.fRight > over.fRight) + base.fLeft = over.fRight; + else if (base.fRight > over.fLeft && base.fLeft < over.fLeft) + base.fRight = over.fLeft; + if (base.fTop < over.fBottom && base.fBottom > over.fBottom) + base.fTop = over.fBottom; + else if (base.fBottom > over.fTop && base.fTop < over.fTop) + base.fBottom = over.fTop; +#if DEBUG_NAV_UI && !defined BROWSER_DEBUG + const SkIRect& modded = boundsCheck.mBounds; + LOGD("%s partially occluded node:%p (%d) old:{%d,%d,%d,%d} new:{%d,%d,%d,%d}\n", + __FUNCTION__, best->mNode, best->mNode->index(), + orig.fLeft, orig.fTop, orig.fRight, orig.fBottom, + base.fLeft, base.fTop, base.fRight, base.fBottom); +#endif + best->mMouseBounds = WebCore::IntRect(bounds.x() + base.fLeft - kMargin, + bounds.y() + base.fTop - kMargin, base.width(), base.height()); + } + return false; +} + +const CachedNode* CachedRoot::moveFocus(Direction direction, const CachedFrame** framePtr, + WebCore::IntPoint* scroll) +{ +#ifndef NDEBUG + ASSERT(CachedFrame::mDebug.mInUse); +#endif + CachedRoot* frame = this; + const CachedNode* node = frame->document(); + if (node == NULL) + return NULL; + if (mViewBounds.isEmpty()) + return NULL; + resetClippedOut(); + setData(); + BestData bestData; + innerMove(node, &bestData, direction, scroll, true); + *framePtr = bestData.mFrame; + return const_cast<CachedNode*>(bestData.mNode); +} + +void CachedRoot::reset() +{ +#ifndef NDEBUG + ASSERT(CachedFrame::mDebug.mInUse); +#endif + mContents = mViewBounds = WebCore::IntRect(0, 0, 0, 0); + mMaxXScroll = mMaxYScroll = 0; + mSelectionStart = mSelectionEnd = -1; + mScrollOnly = false; +// resetNavClipBounds(); +} + +bool CachedRoot::scrollDelta(WebCore::IntRect& newOutset, Direction direction, int* delta) +{ + switch (direction) { + case LEFT: + *delta = -mMaxXScroll; + return newOutset.x() >= mViewBounds.x(); + case RIGHT: + *delta = mMaxXScroll; + return newOutset.right() <= mViewBounds.right(); + case UP: + *delta = -mMaxYScroll; + return newOutset.y() >= mViewBounds.y(); + case DOWN: + *delta = mMaxYScroll; + return newOutset.bottom() <= mViewBounds.bottom(); + default: + *delta = 0; + ASSERT(0); + } + return false; +} + +void CachedRoot::setCachedFocus(CachedFrame* frame, CachedNode* node) +{ +#if !defined NDEBUG + ASSERT(CachedFrame::mDebug.mInUse); +#endif +#if DEBUG_NAV_UI && !defined BROWSER_DEBUG + const CachedNode* focus = currentFocus(); + WebCore::IntRect bounds; + if (focus) + bounds = focus->bounds(); + LOGD("%s old focus %d (nodePointer=%p) bounds={%d,%d,%d,%d}\n", __FUNCTION__, + focus ? focus->index() : 0, + focus ? focus->nodePointer() : NULL, bounds.x(), bounds.y(), + bounds.width(), bounds.height()); +#endif + clearFocus(); + if (node == NULL) + return; + node->setIsFocus(true); + ASSERT(node->isFrame() == false); + frame->setFocusIndex(node - frame->document()); + ASSERT(frame->focusIndex() > 0 && frame->focusIndex() < (int) frame->size()); + CachedFrame* parent; + while ((parent = frame->parent()) != NULL) { + parent->setFocusIndex(frame->indexInParent()); + frame = parent; + } +#if DEBUG_NAV_UI && !defined BROWSER_DEBUG + focus = currentFocus(); + bounds = WebCore::IntRect(0, 0, 0, 0); + if (focus) + bounds = focus->bounds(); + LOGD("%s new focus %d (nodePointer=%p) bounds={%d,%d,%d,%d}\n", __FUNCTION__, + focus ? focus->index() : 0, + focus ? focus->nodePointer() : NULL, bounds.x(), bounds.y(), + bounds.width(), bounds.height()); +#endif +} + +void CachedRoot::setupScrolledBounds() const +{ + mScrolledBounds = mViewBounds; +} + +#if DUMP_NAV_CACHE + +#define DEBUG_PRINT_BOOL(field) \ + DUMP_NAV_LOGD("// bool " #field "=%s;\n", b->field ? "true" : "false") + +CachedRoot* CachedRoot::Debug::base() const { + CachedRoot* nav = (CachedRoot*) ((char*) this - OFFSETOF(CachedRoot, mDebug)); + return nav; +} + +void CachedRoot::Debug::print() const +{ +#ifdef DUMP_NAV_CACHE_USING_PRINTF + gWriteLogMutex.lock(); + ASSERT(gNavCacheLogFile == NULL); + gNavCacheLogFile = fopen(NAV_CACHE_LOG_FILE, "a"); +#endif + CachedRoot* b = base(); + b->CachedFrame::mDebug.print(); + b->mHistory->mDebug.print(b); + DUMP_NAV_LOGD("// int mMaxXScroll=%d, mMaxYScroll=%d;\n", + b->mMaxXScroll, b->mMaxYScroll); + DEBUG_PRINT_BOOL(mFocusChild); +#ifdef DUMP_NAV_CACHE_USING_PRINTF + if (gNavCacheLogFile) + fclose(gNavCacheLogFile); + gNavCacheLogFile = NULL; + gWriteLogMutex.unlock(); +#endif +} + +#endif + +} |