WP6ContentListener.h

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00001 /* libwpd
00002  * Copyright (C) 2002 William Lachance (william.lachance@sympatico.ca)
00003  * Copyright (C) 2002 Marc Maurer (j.m.maurer@student.utwente.nl)
00004  * Copyright (C) 2005 Fridrich Strba (fridrich.strba@bluewin.ch)
00005  *
00006  * This library is free software; you can redistribute it and/or
00007  * modify it under the terms of the GNU Library General Public
00008  * License as published by the Free Software Foundation; either
00009  * version 2 of the License, or (at your option) any later version.
00010  *
00011  * This library is distributed in the hope that it will be useful,
00012  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014  * Library General Public License for more details.
00015  *
00016  * You should have received a copy of the GNU Library General Public
00017  * License along with this library; if not, write to the Free Software
00018  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
00019  *
00020  * For further information visit http://libwpd.sourceforge.net
00021  */
00022 
00023 /* "This product is not manufactured, approved, or supported by
00024  * Corel Corporation or Corel Corporation Limited."
00025  */
00026 
00027 #ifndef WP6CONTENTLISTENER_H
00028 #define WP6CONTENTLISTENER_H
00029 
00030 #include "WP6Listener.h"
00031 #include "WPXListener.h"
00032 #include "WP6FileStructure.h"
00033 
00034 #include <stack>
00035 #include <map>
00036 #include <vector>
00037 
00038 class WPXHLListenerImpl;
00039 class WP6LLParser;
00040 class WPXTable;
00041 
00042 enum WP6StyleState { NORMAL, DOCUMENT_NOTE, DOCUMENT_NOTE_GLOBAL,
00043                      BEGIN_BEFORE_NUMBERING,
00044                      BEGIN_NUMBERING_BEFORE_DISPLAY_REFERENCING,
00045                      DISPLAY_REFERENCING,
00046                      BEGIN_NUMBERING_AFTER_DISPLAY_REFERENCING,
00047                      BEGIN_AFTER_NUMBERING, STYLE_BODY, STYLE_END };
00048 
00049 enum WP6ListType { ORDERED, UNORDERED };
00050 
00051 const int STATE_MEMORY = 3;
00052 class WP6StyleStateSequence
00053 {
00054 public:
00055         WP6StyleStateSequence() { clear(); }
00056         void setCurrentState(WP6StyleState state) { for (int i=(STATE_MEMORY-1); i>0; i--) m_stateSequence[i] = m_stateSequence[i-1]; m_stateSequence[0]=state; }
00057         const WP6StyleState getCurrentState() const { return m_stateSequence[0]; /*currentState;*/ }
00058         const WP6StyleState getPreviousState() const { return m_stateSequence[1]; /*m_previousState;*/ }
00059         void clear() { m_stateSequence.clear(); for (int i=0; i<STATE_MEMORY; i++) m_stateSequence.push_back(NORMAL); }
00060 
00061 private:
00062         std::vector<WP6StyleState> m_stateSequence;
00063         WP6StyleState m_currentState;
00064         WP6StyleState m_previousState;
00065 };
00066 
00067 typedef struct _WP6ParsingState WP6ParsingState;
00068 struct _WP6ParsingState
00069 {
00070         _WP6ParsingState(WPXTableList tableList, int nextTableIndice = 0);
00071         ~_WP6ParsingState();
00072         WPXString m_bodyText;
00073         WPXString m_textBeforeNumber;
00074         WPXString m_textBeforeDisplayReference;
00075         WPXString m_numberText;
00076         WPXString m_textAfterDisplayReference;
00077         WPXString m_textAfterNumber;
00078 
00079         float m_paragraphMarginBottomRelative;
00080         float m_paragraphMarginBottomAbsolute;
00081 
00082         int m_numRemovedParagraphBreaks;
00083         
00084         int m_numListExtraTabs;
00085         bool m_isListReference;
00086 
00087         WPXTableList m_tableList;
00088         WPXTable *m_currentTable;
00089         int m_nextTableIndice;
00090 
00091         std::stack<int> m_listLevelStack;
00092         std::stack<WP6ListType> m_listTypeStack;
00093         uint16_t m_currentOutlineHash; // probably should replace Hash with Key in these sorts of cases
00094         uint8_t m_oldListLevel;
00095         WP6StyleStateSequence m_styleStateSequence;
00096         bool m_putativeListElementHasParagraphNumber;
00097         bool m_putativeListElementHasDisplayReferenceNumber;
00098 
00099         int m_noteTextPID;
00100 
00101         uint16_t m_leaderCharacter;
00102         uint8_t m_leaderNumSpaces;
00103         std::vector<WPXTabStop> m_tempTabStops;
00104         std::vector<bool> m_tempUsePreWP9LeaderMethod;
00105 };
00106 
00107 struct _WP6ListLevel
00108 {
00109         int m_level;
00110         bool m_isListElementOpenAtLevel;
00111 };
00112 
00113 class WP6OutlineDefinition
00114 {
00115  public:
00116         WP6OutlineDefinition();
00117         WP6OutlineDefinition(const WP6OutlineLocation outlineLocation, const uint8_t *numberingMethods,
00118                           const uint8_t tabBehaviourFlag);
00119         void update(const uint8_t *numberingMethods, const uint8_t tabBehaviourFlag);
00120 
00121         WPXNumberingType getListType(int level) { return m_listTypes[level]; }
00122 
00123 protected:
00124         void _updateNumberingMethods(const WP6OutlineLocation outlineLocation, const uint8_t *numberingMethods);
00125 
00126 private:
00127         WPXNumberingType m_listTypes[WP6_NUM_LIST_LEVELS];
00128 };
00129 
00130 class WP6ContentListener : public WP6Listener
00131 {
00132 public:
00133         WP6ContentListener(std::vector<WPXPageSpan *> *pageList, WPXTableList tableList, WPXHLListenerImpl *listenerImpl);
00134         virtual ~WP6ContentListener();
00135 
00136         // for getting low-level messages from the parser
00137         virtual void setDate(const uint16_t year, const uint8_t month, const uint8_t day,
00138                                                 const uint8_t hour, const uint8_t minute, const uint8_t second,
00139                                                 const uint8_t dayOfWeek, const uint8_t timeZone, const uint8_t unused) {}
00140         virtual void setExtendedInformation(const uint16_t type, const WPXString &data);
00141         virtual void setAlignmentCharacter(const uint16_t character);
00142         virtual void setLeaderCharacter(const uint16_t character, const uint8_t numSpaces);
00143         virtual void defineTabStops(const bool isRelative, const std::vector<WPXTabStop> &tabStops, 
00144                                     const std::vector<bool> &usePreWP9LeaderMethods);
00145         virtual void insertCharacter(const uint16_t character);
00146         virtual void insertTab(const uint8_t tabType, const float tabPosition);
00147         virtual void handleLineBreak();
00148         virtual void insertEOL();
00149         virtual void characterColorChange(const uint8_t red, const uint8_t green, const uint8_t blue);
00150         virtual void characterShadingChange(const uint8_t shading);
00151         virtual void highlightChange(const bool isOn, const RGBSColor color);
00152         virtual void fontChange(const uint16_t matchedFontPointSize, const uint16_t fontPID);
00153         virtual void attributeChange(const bool isOn, const uint8_t attribute);
00154         virtual void spacingAfterParagraphChange(const float spacingRelative, const float spacingAbsolute);
00155         virtual void pageMarginChange(const uint8_t side, const uint16_t margin) {}
00156         virtual void pageFormChange(const uint16_t length, const uint16_t width, const WPXFormOrientation orientation, const bool isPersistent) {}
00157         virtual void marginChange(const uint8_t side, const uint16_t margin);
00158         virtual void paragraphMarginChange(const uint8_t side, const int16_t margin);
00159         virtual void indentFirstLineChange(const int16_t offset);
00160         virtual void columnChange(const WPXTextColumnType columnType, const uint8_t numColumns, const std::vector<float> &columnWidth,
00161                                   const std::vector<bool> &isFixedWidth);
00162         virtual void updateOutlineDefinition(const WP6OutlineLocation outlineLocation, const uint16_t outlineHash,
00163                                              const uint8_t *numberingMethods, const uint8_t tabBehaviourFlag);
00164 
00165         virtual void paragraphNumberOn(const uint16_t outlineHash, const uint8_t level, const uint8_t flag);
00166         virtual void paragraphNumberOff();
00167         virtual void displayNumberReferenceGroupOn(const uint8_t subGroup, const uint8_t level);
00168         virtual void displayNumberReferenceGroupOff(const uint8_t subGroup);
00169         virtual void styleGroupOn(const uint8_t subGroup);
00170         virtual void styleGroupOff(const uint8_t subGroup);
00171         virtual void globalOn(const uint8_t systemStyle);
00172         virtual void globalOff();
00173         virtual void noteOn(const uint16_t textPID);
00174         virtual void noteOff(const WPXNoteType noteType);
00175         virtual void headerFooterGroup(const uint8_t headerFooterType, const uint8_t occurenceBits, const uint16_t textPID) {}
00176         virtual void suppressPageCharacteristics(const uint8_t suppressCode) {}
00177         virtual void endDocument();
00178 
00179         virtual void defineTable(const uint8_t position, const uint16_t leftOffset);
00180         virtual void addTableColumnDefinition(const uint32_t width, const uint32_t leftGutter, const uint32_t rightGutter,
00181                                 const uint32_t attributes, const uint8_t alignment);
00182         virtual void startTable();
00183         virtual void insertRow(const uint16_t rowHeight, const bool isMinimumHeight, const bool isHeaderRow);
00184         virtual void insertCell(const uint8_t colSpan, const uint8_t rowSpan, const uint8_t borderBits,
00185                                 const RGBSColor * cellFgColor, const RGBSColor * cellBgColor,
00186                                 const RGBSColor * cellBorderColor, const WPXVerticalAlignment cellVerticalAlignment, 
00187                                 const bool useCellAttributes, const uint32_t cellAttributes);
00188         virtual void endTable();
00189 
00190 
00191 protected:
00192         virtual void _handleSubDocument(const WPXSubDocument *subDocument, const bool isHeaderFooter, WPXTableList tableList, int nextTableIndice = 0);
00193 
00194         //void _handleLineBreakElementBegin();
00195         void _paragraphNumberOn(const uint16_t outlineHash, const uint8_t level);
00196         void _flushText();
00197         void _handleListChange(const uint16_t outlineHash);
00198 
00199         void _changeList();
00200 
00201 private:
00202         WP6ParsingState *m_parseState;
00203 
00204         std::map<uint16_t,WP6OutlineDefinition *> m_outlineDefineHash;
00205 };
00206 
00207 #endif /* WP6CONTENTLISTENER_H */

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