1 files changed, 71 insertions, 0 deletions
diff --git a/src/lib/preprocess/VsdElementListPreprocessor.h b/src/lib/preprocess/VsdElementListPreprocessor.h
new file mode 100644
index 0000000..b07d8c0
--- /dev/null
+++ b/src/lib/preprocess/VsdElementListPreprocessor.h
@@ -0,0 +1,71 @@
+#ifndef _VSD_ELEMENT_LIST_PREPROCESSOR_H_INCLUDED_
+#define _VSD_ELEMENT_LIST_PREPROCESSOR_H_INCLUDED_
+
+#include "SvgSpan.h"
+#include "VSDOutputElementList.h"
+
+#include <vector>
+
+
+class SvgDC;
+class SvgTextObjectC;
+
+namespace libvisio
+{
+class VSDStyleOutputElement;
+class VSDPathOutputElement;
+}
+
+/**
+ * Pre-processes a specified list of VSD output elements before they are rendered to the output
+ * SVG document. The purpose is to calculate additional data related to the elements and make it
+ * available to the renderer, so that the resulting SVG is the closest possible match of the
+ * original. In particular, text aligment and wrapping within parent text boxes are addressed here.
+ * Preprocessing produces a new element list, which in comparison to the input one may add new
+ * elements, remove existing ones, or add or modify properties of other elements.
+ */
+class VsdElementListPreprocessorC
+{
+public:
+  typedef std::vector<libvisio::VSDOutputElement *> ElementListTp;
+  typedef ElementListTp::iterator ElementListItTp;
+  typedef ElementListTp::const_iterator ElementListConstItTp;
+
+  void Process(const ElementListTp &elements, ElementListTp &outElements);
+
+private:
+  ElementListConstItTp ProcessTextObject(
+    ElementListConstItTp startIt, ElementListConstItTp endIt, ElementListTp &outElements,
+    SvgDC &dc);
+
+  ElementListConstItTp ProcessTextObjectOnePass(
+    ElementListConstItTp startIt, ElementListConstItTp endIt,
+    ElementListTp &outElements, SvgTextObjectC *pTextObject);
+
+  ElementListConstItTp ProcessParagraph(
+    ElementListConstItTp startIt, ElementListConstItTp endIt,
+    ElementListTp &outElements, SvgTextObjectC *pTextObject);
+
+  ElementListConstItTp ProcessUnorderedList(
+    ElementListConstItTp startIt, ElementListConstItTp endIt,
+    ElementListTp &outElements, SvgTextObjectC *pTextObject);
+
+  ElementListConstItTp ProcessListElement(
+    ElementListConstItTp startIt, ElementListConstItTp endIt,
+    ElementListTp &outElements, SvgTextObjectC *pTextObject);
+
+  ElementListConstItTp ProcessSpan(
+    ElementListConstItTp startIt, ElementListConstItTp endIt,
+    ElementListTp &outElements, SvgTextObjectC *pTextObject);
+
+  void GenerateSpans(
+    const SpansTp &spans, ElementListTp &outElements, SvgTextObjectC *pTextObject);
+
+  libvisio::VSDStyleOutputElement *CreateStyleOutput(const std::string &fillColor);
+
+  libvisio::VSDPathOutputElement *CreateRectPathOutput(
+    double x1Inch, double y1Inch, double x2Inch, double y2Inch);
+};
+
+
+#endif // _VSD_ELEMENT_LIST_PREPROCESSOR_H_INCLUDED_