1 files changed, 109 insertions, 0 deletions
diff --git a/src/lib/preprocess/SvgTextObject.h b/src/lib/preprocess/SvgTextObject.h
new file mode 100644
index 0000000..3fccfeb
--- /dev/null
+++ b/src/lib/preprocess/SvgTextObject.h
@@ -0,0 +1,109 @@
+#ifndef _SVG_TEXT_OBJECT_H_INCLUDED_
+#define _SVG_TEXT_OBJECT_H_INCLUDED_
+
+
+#include "SvgParagraph.h"
+#include "SvgSpan.h"
+
+#include <string>
+
+
+namespace libvisio
+{
+class VSDStartTextObjectOutputElement;
+class VSDOpenParagraphOutputElement;
+class VSDOpenUnorderedListLevelOutputElement;
+class VSDOpenListElementOutputElement;
+class VSDOpenSpanOutputElement;
+class VSDInsertTextOutputElement;
+class VSDInsertTabOutputElement;
+}
+
+class SvgDC;
+class SvgFontC;
+
+
+/**
+ * Represents an SVG text object and provides methods that reflect its particular structure and
+ * calculate additional properties of contained elements that are required for proper rendering.
+ */
+class SvgTextObjectC
+{
+public:
+  enum ProcessingStageE
+  {
+    PS_NONE,
+    PS_CALCULATE,
+    PS_LAYOUT
+  };
+
+  SvgTextObjectC(libvisio::VSDStartTextObjectOutputElement *pStartText, SvgDC &dc);
+
+  SvgDC &GetDC();
+  ProcessingStageE GetProcessingStage() const;
+
+  double GetOrigXInch() const;
+  double GetOrigYInch() const;
+  double GetWidthInch() const;
+  double GetHeightInch() const;
+  double GetPaddingLeftInch() const;
+  double GetPaddingRightInch() const;
+  double GetPaddingTopInch() const;
+  double GetPaddingBottomInch() const;
+
+  double GetCurrentLineYInch() const;
+  double RowOfTextAdded();
+
+  const std::string &GetCurrentHorizontalAlignment() const;
+  const SvgFontC *GetCurrentFont() const;
+
+  const std::string &GetBackgroundColor() const;
+  void SetCurrentTextLeftBoundInch(double x);
+  void SetCurrentTextRightBoundInch(double x);
+  void GetCurrentTextBoundsInch(double &x1, double &y1, double &x2, double &y2) const;
+  double GetCurrentTextBoundTopInch() const;
+  std::wstring GetCurrentBulletCharacter() const;
+
+  void OpenParagraph(const libvisio::VSDOpenParagraphOutputElement *pOpenParagraph);
+  void OpenUnorderedList(const libvisio::VSDOpenUnorderedListLevelOutputElement *pList);
+  void OpenListElement(const libvisio::VSDOpenListElementOutputElement *pOpenListElem);
+  void OpenSpan(const libvisio::VSDOpenSpanOutputElement *pOpenSpan);
+  void InsertText(const libvisio::VSDInsertTextOutputElement *pInsertText);
+  void InsertTab(const libvisio::VSDInsertTabOutputElement *pInsertTab);
+  void CalculateCurrentParagraphSpans(SpansTp &spans);
+
+  void StartCalculationStage();
+  void StartLayoutStage();
+
+private:
+  void AddSpan(
+    SpansTp &spans, const libvisio::VSDOpenSpanOutputElement *pSvgSpan, const std::wstring &text,
+    double offsetInch, int firstCharIdx, int lastCharIdx, bool endWithNewLine);
+
+  double m_origXInch; ///< X coordinate of the top left corner in inches
+  double m_origYInch; ///< Y coordinate of the top left corner in inches
+  double m_widthInch; ///< box width in inches
+  double m_heightInch; ///< box height in inches
+  double m_padLeftInch; ///< left padding in inches
+  double m_padRightInch; ///< right padding in inches
+  double m_padTopInch; ///<< top padding in inches
+  double m_padBottomInch; ///< bottom padding in inches
+
+  SvgDC &m_dc; ///< device context to use for text size-related calculations
+  mutable const SvgFontC *m_pCurrentFont; ///< font that applies to the currently processed text
+
+  ProcessingStageE m_stage; ///< stage of processing of textbox contents
+  double m_firstLineOffsetYInch; ///< vertical offset of the first (base)line in the text box
+  double m_currentLineYInch; ///< vertical position of the current line of text
+  std::string m_verticalAlign; ///< vertical alignment of the text box
+
+  double m_textLeftBoundInch; ///< the left bound of the left-most line of the text
+  double m_textRightBoundInch; ///< the right bound of the right-most line of the text
+  std::string m_bkgColor; ///< text box background color or empty string for transparent background
+
+  ParagraphC m_currentParagraph; ///< paragraph currently being processed
+  std::wstring m_currentBulletChar; ///< the character to use for the subsequest list item bullet
+};
+
+
+#endif // _SVG_TEXT_OBJECT_H_INCLUDED_