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Diffstat (limited to 'WebKit/android/nav/FindCanvas.h')
| -rw-r--r-- | WebKit/android/nav/FindCanvas.h | 207 |
1 files changed, 0 insertions, 207 deletions
diff --git a/WebKit/android/nav/FindCanvas.h b/WebKit/android/nav/FindCanvas.h deleted file mode 100644 index 5d79b4c..0000000 --- a/WebKit/android/nav/FindCanvas.h +++ /dev/null @@ -1,207 +0,0 @@ -/* - * Copyright 2008, 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 Find_Canvas_h -#define Find_Canvas_h - -#include "SkBounder.h" -#include "SkCanvas.h" -#include "SkPicture.h" -#include "SkRegion.h" -#include "SkTDArray.h" -#include "icu/unicode/umachine.h" -#include "wtf/Vector.h" - -class SkRect; -class SkTypeface; - -// Stores both region information and an SkPicture of the match, so that the -// region can be drawn, followed by drawing the matching text on top of it. -// This class owns its SkPicture -class MatchInfo { -public: - MatchInfo(); - ~MatchInfo(); - MatchInfo(const MatchInfo& src); - const SkRegion& getLocation() const { return m_location; } - // Return a pointer to our picture, representing the matching text. Does - // not transfer ownership of the picture. - SkPicture* getPicture() const { return m_picture; } - // This will make a copy of the region, and increase the ref count on the - // SkPicture. If this MatchInfo already had one, unref it. - void set(const SkRegion& region, SkPicture* pic); -private: - MatchInfo& operator=(MatchInfo& src); - SkRegion m_location; - SkPicture* m_picture; -}; - -// A class containing a typeface for reference, the length in glyphs, and -// the upper and lower case representations of the search string. -class GlyphSet { -public: - GlyphSet(const SkPaint& paint, const UChar* lower, const UChar* upper, - size_t byteLength); - ~GlyphSet(); - GlyphSet& operator=(GlyphSet& src); - - // Return true iff c matches one of our glyph arrays at index - bool characterMatches(uint16_t c, int index); - - int getCount() const { return mCount; } - - const SkTypeface* getTypeface() const { return mTypeface; } - -private: - // Disallow copy constructor - GlyphSet(GlyphSet& src) { } - - // mTypeface is used for comparison only - const SkTypeface* mTypeface; - // mLowerGlyphs points to all of our storage space: the lower set followed - // by the upper set. mUpperGlyphs is purely a convenience pointer to the - // start of the upper case glyphs. - uint16_t* mLowerGlyphs; - uint16_t* mUpperGlyphs; - // mCount is the number of glyphs of the search string. Must be the same - // for both the lower case set and the upper case set. - int mCount; - - // Arbitrarily chose the maximum storage to use in the GlyphSet. This is - // based on the length of the word being searched. If users are always - // searching for 3 letter words (for example), an ideal number would be 3. - // Each time the user searches for a word longer than (in this case, 3) that - // will result in calling new/delete. - enum Storage { - MAX_STORAGE_COUNT = 16 - }; - // In order to eliminate new/deletes, create storage that will be enough - // most of the time - uint16_t mStorage[2*MAX_STORAGE_COUNT]; -}; - -class FindBounder : public SkBounder { -public: - FindBounder() {} - ~FindBounder() {} -protected: - virtual bool onIRect(const SkIRect&) { return false; } -}; - -class FindCanvas : public SkCanvas { -public: - FindCanvas(int width, int height, const UChar* , const UChar*, - size_t byteLength); - - virtual ~FindCanvas(); - - virtual void drawText(const void* text, size_t byteLength, SkScalar x, - SkScalar y, const SkPaint& paint); - - /* FIXME: This path has not been tested. */ - virtual void drawPosText(const void* text, size_t byteLength, - const SkPoint pos[], const SkPaint& paint); - - /* Also untested */ - virtual void drawPosTextH(const void* text, size_t byteLength, - const SkScalar xpos[], SkScalar constY, - const SkPaint& paint); - - /* Not sure what to do here or for drawTextOnPathHV */ - virtual void drawTextOnPath(const void* text, size_t byteLength, - const SkPath& path, const SkMatrix* matrix, - const SkPaint& paint) { - } - - int found() const { return mNumFound; } - - // This method detaches our array of matches and passes ownership to - // the caller, who is then responsible for deleting them. - WTF::Vector<MatchInfo>* detachMatches() { - WTF::Vector<MatchInfo>* array = mMatches; - mMatches = NULL; - return array; - } - -private: - // These calls are made by findHelper to store information about each match - // that is found. They return a rectangle which is used to highlight the - // match. They also add to our SkPicture (which can be accessed with - // getDrawnMatches) a draw of each match. This way it can be drawn after - // the rectangle. The rect that is returned is in device coordinates. - SkRect addMatchNormal(int index, - const SkPaint& paint, int count, const uint16_t* glyphs, - const SkScalar pos[], SkScalar y); - - SkRect addMatchPos(int index, - const SkPaint& paint, int count, const uint16_t* glyphs, - const SkScalar xPos[], SkScalar /* y */); - - SkRect addMatchPosH(int index, - const SkPaint& paint, int count, const uint16_t* glyphs, - const SkScalar position[], SkScalar constY); - - // Helper for each of our draw calls - void findHelper(const void* text, size_t byteLength, const SkPaint& paint, - const SkScalar xPos[], SkScalar y, - SkRect (FindCanvas::*addMatch)(int index, - const SkPaint& paint, int count, const uint16_t* glyphs, - const SkScalar pos[], SkScalar y)); - - // If we already have a working canvas, grab it. Otherwise, create a new - // one. - SkCanvas* getWorkingCanvas(); - - // Return the set of glyphs and its count for the text being searched for - // and the parameter paint. If one has already been created and cached - // for this paint, use it. If not, create a new one and cache it. - GlyphSet* getGlyphs(const SkPaint& paint); - - // Store all the accumulated info about a match in our vector. - void insertMatchInfo(const SkRegion& region); - - // Throw away our cumulative information about our working SkCanvas. After - // this call, next call to getWorkingCanvas will create a new one. - void resetWorkingCanvas(); - - // Since we may transfer ownership of this array (see detachRects()), we - // hold a pointer to the array instead of just the array itself. - WTF::Vector<MatchInfo>* mMatches; - const UChar* mLowerText; - const UChar* mUpperText; - size_t mLength; - FindBounder mBounder; - int mNumFound; - SkScalar mOutset; - SkTDArray<GlyphSet> mGlyphSets; - - SkPicture* mWorkingPicture; - SkCanvas* mWorkingCanvas; - SkRegion mWorkingRegion; - int mWorkingIndex; -}; - -#endif // Find_Canvas_h - |