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      1 /* libs/graphics/animator/SkDisplayXMLParser.h
      2 **
      3 ** Copyright 2006, The Android Open Source Project
      4 **
      5 ** Licensed under the Apache License, Version 2.0 (the "License");
      6 ** you may not use this file except in compliance with the License.
      7 ** You may obtain a copy of the License at
      8 **
      9 **     http://www.apache.org/licenses/LICENSE-2.0
     10 **
     11 ** Unless required by applicable law or agreed to in writing, software
     12 ** distributed under the License is distributed on an "AS IS" BASIS,
     13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     14 ** See the License for the specific language governing permissions and
     15 ** limitations under the License.
     16 */
     17 
     18 #ifndef SkDisplayXMLParser_DEFINED
     19 #define SkDisplayXMLParser_DEFINED
     20 
     21 #include "SkIntArray.h"
     22 #include "SkTDict.h"
     23 #include "SkDisplayType.h"
     24 #include "SkXMLParser.h"
     25 
     26 class SkAnimateMaker;
     27 class SkDisplayable;
     28 
     29 class SkDisplayXMLParserError : public SkXMLParserError {
     30 public:
     31     enum ErrorCode {
     32         kApplyScopesItself = kUnknownError + 1,
     33         kDisplayTreeTooDeep,
     34         kElementMissingParent,
     35         kElementTypeNotAllowedInParent,
     36         kErrorAddingDataToPost,
     37         kErrorAddingToMatrix,
     38         kErrorAddingToPaint,
     39         kErrorAddingToPath,
     40         kErrorInAttributeValue,
     41         kErrorInScript,
     42         kExpectedMovie,
     43         kFieldNotInTarget,
     44         kGradientOffsetsDontMatchColors,
     45         kGradientOffsetsMustBeNoMoreThanOne,
     46         kGradientOffsetsMustEndWithOne,
     47         kGradientOffsetsMustIncrease,
     48         kGradientOffsetsMustStartWithZero,
     49         kGradientPointsLengthMustBeFour,
     50         kInInclude,
     51         kInMovie,
     52         kIncludeNameUnknownOrMissing,
     53         kIndexOutOfRange,
     54         kMovieNameUnknownOrMissing,
     55         kNoParentAvailable,
     56         kParentElementCantContain,
     57         kSaveLayerNeedsBounds,
     58         kTargetIDNotFound,
     59         kUnexpectedType
     60     };
     61     virtual ~SkDisplayXMLParserError();
     62     virtual void getErrorString(SkString* str) const;
     63     void setCode(ErrorCode code) { INHERITED::setCode((INHERITED::ErrorCode) code); }
     64     void setInnerError(SkAnimateMaker* maker, const SkString& str);
     65     typedef SkXMLParserError INHERITED;
     66     friend class SkDisplayXMLParser;
     67 };
     68 
     69 class SkDisplayXMLParser : public SkXMLParser {
     70 public:
     71     SkDisplayXMLParser(SkAnimateMaker& maker);
     72     virtual ~SkDisplayXMLParser();
     73 protected:
     74     virtual bool onAddAttribute(const char name[], const char value[]);
     75     bool onAddAttributeLen(const char name[], const char value[], size_t len);
     76     virtual bool onEndElement(const char elem[]);
     77     virtual bool onStartElement(const char elem[]);
     78     bool onStartElementLen(const char elem[], size_t len);
     79 private:
     80     struct Parent {
     81         SkDisplayable* fDisplayable;
     82         SkDisplayTypes fType;
     83     };
     84     SkTDArray<Parent> fParents;
     85     SkDisplayXMLParser& operator= (const SkDisplayXMLParser& );
     86     SkDisplayXMLParserError* getError() { return (SkDisplayXMLParserError*) fError; }
     87     const SkMemberInfo* searchContainer(const SkMemberInfo* ,
     88         int infoCount);
     89     SkAnimateMaker& fMaker;
     90     SkBool fInInclude;
     91     SkBool fInSkia;
     92     // local state between onStartElement and onAddAttribute
     93     SkDisplayable*  fCurrDisplayable;
     94     SkDisplayTypes  fCurrType;
     95     friend class SkXMLAnimatorWriter;
     96     typedef SkXMLParser INHERITED;
     97 };
     98 
     99 #endif // SkDisplayXMLParser_DEFINED
    100 
    101 
    102