2 * Copyright (C) Research In Motion Limited 2010. All rights reserved.
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
14 * You should have received a copy of the GNU Library General Public License
15 * along with this library; see the file COPYING.LIB. If not, write to
16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
20 #ifndef SVGTextQuery_h
21 #define SVGTextQuery_h
24 #include "FloatRect.h"
25 #include "SVGTextFragment.h"
26 #include <wtf/Vector.h>
32 class SVGInlineTextBox;
36 SVGTextQuery(RenderObject*);
38 unsigned numberOfCharacters() const;
39 float textLength() const;
40 float subStringLength(unsigned startPosition, unsigned length) const;
41 FloatPoint startPositionOfCharacter(unsigned position) const;
42 FloatPoint endPositionOfCharacter(unsigned position) const;
43 float rotationOfCharacter(unsigned position) const;
44 FloatRect extentOfCharacter(unsigned position) const;
45 int characterNumberAtPosition(const FloatPoint&) const;
47 // Public helper struct. Private classes in SVGTextQuery inherit from it.
51 typedef bool (SVGTextQuery::*ProcessTextFragmentCallback)(Data*, const SVGTextFragment&) const;
52 bool executeQuery(Data*, ProcessTextFragmentCallback) const;
54 void collectTextBoxesInFlowBox(InlineFlowBox*);
55 bool mapStartEndPositionsIntoFragmentCoordinates(Data*, const SVGTextFragment&, int& startPosition, int& endPosition) const;
56 void modifyStartEndPositionsRespectingLigatures(Data*, int& startPosition, int& endPosition) const;
59 bool numberOfCharactersCallback(Data*, const SVGTextFragment&) const;
60 bool textLengthCallback(Data*, const SVGTextFragment&) const;
61 bool subStringLengthCallback(Data*, const SVGTextFragment&) const;
62 bool startPositionOfCharacterCallback(Data*, const SVGTextFragment&) const;
63 bool endPositionOfCharacterCallback(Data*, const SVGTextFragment&) const;
64 bool rotationOfCharacterCallback(Data*, const SVGTextFragment&) const;
65 bool extentOfCharacterCallback(Data*, const SVGTextFragment&) const;
66 bool characterNumberAtPositionCallback(Data*, const SVGTextFragment&) const;
69 Vector<SVGInlineTextBox*> m_textBoxes;