github.com/phpdave11/gofpdf@v1.4.2/subwrite.go (about)

     1  package gofpdf
     2  
     3  // Adapted from http://www.fpdf.org/en/script/script61.php by Wirus and released with the FPDF license.
     4  
     5  // SubWrite prints text from the current position in the same way as Write().
     6  // ht is the line height in the unit of measure specified in New(). str
     7  // specifies the text to write. subFontSize is the size of the font in points.
     8  // subOffset is the vertical offset of the text in points; a positive value
     9  // indicates a superscript, a negative value indicates a subscript. link is the
    10  // identifier returned by AddLink() or 0 for no internal link. linkStr is a
    11  // target URL or empty for no external link. A non--zero value for link takes
    12  // precedence over linkStr.
    13  //
    14  // The SubWrite example demonstrates this method.
    15  func (f *Fpdf) SubWrite(ht float64, str string, subFontSize, subOffset float64, link int, linkStr string) {
    16  	if f.err != nil {
    17  		return
    18  	}
    19  	// resize font
    20  	subFontSizeOld := f.fontSizePt
    21  	f.SetFontSize(subFontSize)
    22  	// reposition y
    23  	subOffset = (((subFontSize - subFontSizeOld) / f.k) * 0.3) + (subOffset / f.k)
    24  	subX := f.x
    25  	subY := f.y
    26  	f.SetXY(subX, subY-subOffset)
    27  	//Output text
    28  	f.write(ht, str, link, linkStr)
    29  	// restore y position
    30  	subX = f.x
    31  	subY = f.y
    32  	f.SetXY(subX, subY+subOffset)
    33  	// restore font size
    34  	f.SetFontSize(subFontSizeOld)
    35  }