Traverse recursively through the DOM tree beginning with the given node. More...

#include <wxiscanhocr2pdf.h>

Inheritance diagram for wxIScanSmartHocr2Pdf:

Public Member Functions
	wxIScanSmartHocr2Pdf (wxXmlDocument poXmlDoc, wxPdfDocument poPdfDoc, int nResolution, const wxString &strHocrClassFilter=wxT("ocr_line"))
	DOM tree traverser class for wxIScanFrame::AddPdfPage() based on wxIScanFrameHocr2Pdf class to achieve a "smarter" word based PDF output hidden behind the image.
Protected Member Functions
virtual void	Print2Pdf (double x, double y, const wxString &strText)
	Print the given text at the given coordinates.
virtual void	Flush2Pdf ()
	Flush outstanding print-to-PDF-commands.
Protected Attributes
double	m_x
double	m_y
	Save printing coordinates.
wxString	m_strText
	Save outstanding text.

Detailed Description

Traverse recursively through the DOM tree beginning with the given node.

This class extends wxIScanHocr2Pdf by "smart" glueing the letters of one word together. This makes it easer to search a PDF document for words (instead of single) letters).

NOTE:

1) This is some sort of a "private" class to wxIScanFrame and should not be used outside wxIScanFrame::AddPdfPage().

2) There is no validity check done on poXmlDoc, poPdfDoc and nResolution. That is it is assumed that all parameters of the constructor are valid.

Definition at line 121 of file wxiscanhocr2pdf.h.

Constructor & Destructor Documentation

wxIScanSmartHocr2Pdf::wxIScanSmartHocr2Pdf	(	wxXmlDocument *	poXmlDoc,
		wxPdfDocument *	poPdfDoc,
		int	nResolution,
		const wxString &	strHocrClassFilter = `wxT( "ocr_line" )`
	)

DOM tree traverser class for wxIScanFrame::AddPdfPage() based on wxIScanFrameHocr2Pdf class to achieve a "smarter" word based PDF output hidden behind the image.

Parameters:

poXmlDoc	the (valid!) pointer to the XML DOM tree
poPdfDoc	the (valid!) pointer to the PDF document
nResolution	the (virtual) resolution of the image
strHocrClassFilter	the class to use for hOCR information (e. g. whole lines or words)

Definition at line 122 of file wxiscanhocr2pdf.cpp.

References m_strText, and m_y.

  : wxIScanHocr2Pdf( poXmlDoc, poPdfDoc, nResolution, strHocrClassFilter )
{
    // Clear the collection buffer.
    m_strText.Empty();

    // Reset ...
    m_y= -1.0;
}

Member Function Documentation

void wxIScanSmartHocr2Pdf::Flush2Pdf ( ) [protected, virtual]

Flush outstanding print-to-PDF-commands.

NOTE: This function does the real printing initialized by (maybe multiple) calls to Print2Pdf().

Reimplemented from wxIScanHocr2Pdf.

Definition at line 156 of file wxiscanhocr2pdf.cpp.

References wxIScanHocr2Pdf::m_poPdfDoc, m_strText, m_x, and m_y.

{
    if( m_y >= 0.0 )
    {
        // "Print" the collected text.
        m_poPdfDoc->Text( m_x, m_y, m_strText );

        // Empty the collection buffer.
        m_strText.Empty();

        // Reset...
        m_y= -1.0;
    }
}

void wxIScanSmartHocr2Pdf::Print2Pdf	(	double	x,
		double	y,
		const wxString &	strText
	)		`[protected, virtual]`

Print the given text at the given coordinates.

Parameters:

x	abscissa of the origin
y	ordinate of the origin
strText	text to print

NOTE: This function only collects text until Flush2Pdf() is called.

Reimplemented from wxIScanHocr2Pdf.

Definition at line 138 of file wxiscanhocr2pdf.cpp.

References m_strText, m_x, and m_y.

{
    // ...
    if( m_y < 0.0 )
    {
        m_x= x;
        m_y= y;
    }

    // Add the new text to the already collected text.
    m_strText += strText;
}