skia2/include/svg/SkSVGParser.h

/*
 * Copyright (C) 2006 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.
 */

#ifndef SkSVGParser_DEFINED
#define SkSVGParser_DEFINED

#include "SkMatrix.h"
#include "SkTDict.h"
#include "SkTDStack.h"
#include "SkSVGPaintState.h"
#include "SkSVGTypes.h"
#include "SkStream.h"
#include "SkString.h"
#include "SkXMLParser.h"
#include "SkXMLWriter.h"

class SkSVGBase;
class SkSVGElement;

class SkSVGParser : public SkXMLParser {
public:
    SkSVGParser(SkXMLParserError* err = NULL);
    virtual ~SkSVGParser();
    void _addAttribute(const char* attrName, const char* attrValue) {
        fXMLWriter.addAttribute(attrName, attrValue); }
    void _addAttribute(const char* attrName, SkString& attrValue) {
        fXMLWriter.addAttribute(attrName, attrValue.c_str()); }
    void _addAttributeLen(const char* attrName, const char* attrValue, size_t len) {
        fXMLWriter.addAttributeLen(attrName, attrValue, len); }
    void _endElement() { fXMLWriter.endElement(); }
    int findAttribute(SkSVGBase* , const char* attrValue, size_t len, bool isPaint);
    const char* getFinal();
    SkTDict<SkSVGElement*>& getIDs() { return fIDs; }
    SkString& getPaintLast(SkSVGPaint::Field field);
    void _startElement(const char name[]) { fXMLWriter.startElement(name); }
    void translate(SkSVGElement*, bool isDef);
    void translateMatrix(SkString& , SkString* id);
    static void ConvertToArray(SkString& vals);
protected:
    virtual bool onAddAttribute(const char name[], const char value[]);
    bool onAddAttributeLen(const char name[], const char value[], size_t len);
    virtual bool onEndElement(const char elem[]);
    virtual bool onStartElement(const char elem[]);
    bool onStartElementLen(const char elem[], size_t len);
    virtual bool onText(const char text[], int len);
private:
    bool isStrokeAndFill(SkSVGPaint** stroke, SkSVGPaint** fill);
    static SkSVGElement* CreateElement(SkSVGTypes type, SkSVGElement* parent);
    static void Delete(SkTDArray<SkSVGElement*>& fChildren);
    static SkSVGTypes GetType(const char name[], size_t len);
    SkSVGPaint* fHead;
    SkSVGPaint fEmptyPaint; 
    SkSVGPaint fLastFlush;
    SkString fLastColor;
    SkMatrix fLastTransform;
    SkTDArray<SkSVGElement*> fChildren;
    SkTDict<SkSVGElement*> fIDs;
    SkTDArray<SkSVGElement*> fParents;
    SkDynamicMemoryWStream fStream;
    SkXMLStreamWriter fXMLWriter;
    SkSVGElement*   fCurrElement;
    SkBool8 fInSVG;
    SkBool8 fSuppressPaint;
    friend class SkSVGPaint;
    friend class SkSVGGradient;
};

#endif // SkSVGParser_DEFINED