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      1 /*
      2  * Copyright (C) 2006 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #ifndef SkSVGParser_DEFINED
     18 #define SkSVGParser_DEFINED
     19 
     20 #include "SkMatrix.h"
     21 #include "SkTDict.h"
     22 #include "SkTDStack.h"
     23 #include "SkSVGPaintState.h"
     24 #include "SkSVGTypes.h"
     25 #include "SkStream.h"
     26 #include "SkString.h"
     27 #include "SkXMLParser.h"
     28 #include "SkXMLWriter.h"
     29 
     30 class SkSVGBase;
     31 class SkSVGElement;
     32 
     33 class SkSVGParser : public SkXMLParser {
     34 public:
     35     SkSVGParser();
     36     virtual ~SkSVGParser();
     37     void _addAttribute(const char* attrName, const char* attrValue) {
     38         fXMLWriter.addAttribute(attrName, attrValue); }
     39     void _addAttribute(const char* attrName, SkString& attrValue) {
     40         fXMLWriter.addAttribute(attrName, attrValue.c_str()); }
     41     void _addAttributeLen(const char* attrName, const char* attrValue, size_t len) {
     42         fXMLWriter.addAttributeLen(attrName, attrValue, len); }
     43     void _endElement() { fXMLWriter.endElement(); }
     44     int findAttribute(SkSVGBase* , const char* attrValue, size_t len, bool isPaint);
     45     const char* getFinal();
     46     SkTDict<SkSVGElement*>& getIDs() { return fIDs; }
     47     SkString& getPaintLast(SkSVGPaint::Field field);
     48     void _startElement(const char name[]) { fXMLWriter.startElement(name); }
     49     void translate(SkSVGElement*, bool isDef);
     50     void translateMatrix(SkString& , SkString* id);
     51     static void ConvertToArray(SkString& vals);
     52 protected:
     53     virtual bool onAddAttribute(const char name[], const char value[]);
     54     bool onAddAttributeLen(const char name[], const char value[], size_t len);
     55     virtual bool onEndElement(const char elem[]);
     56     virtual bool onStartElement(const char elem[]);
     57     bool onStartElementLen(const char elem[], size_t len);
     58     virtual bool onText(const char text[], int len);
     59 private:
     60     bool isStrokeAndFill(SkSVGPaint** stroke, SkSVGPaint** fill);
     61     static SkSVGElement* CreateElement(SkSVGTypes type, SkSVGElement* parent);
     62     static void Delete(SkTDArray<SkSVGElement*>& fChildren);
     63     static SkSVGTypes GetType(const char name[], size_t len);
     64     SkSVGPaint* fHead;
     65     SkSVGPaint fEmptyPaint;
     66     SkSVGPaint fLastFlush;
     67     SkString fLastColor;
     68     SkMatrix fLastTransform;
     69     SkTDArray<SkSVGElement*> fChildren;
     70     SkTDict<SkSVGElement*> fIDs;
     71     SkTDArray<SkSVGElement*> fParents;
     72     SkDynamicMemoryWStream fStream;
     73     SkXMLStreamWriter fXMLWriter;
     74     SkSVGElement*   fCurrElement;
     75     SkBool8 fInSVG;
     76     SkBool8 fSuppressPaint;
     77     friend class SkSVGPaint;
     78     friend class SkSVGGradient;
     79 };
     80 
     81 #endif // SkSVGParser_DEFINED
     82