form_fields/form_textfield_layout
Specify the layout of a form field of type "textfield" for displaying a date.
Download Java Code Switch to PHP Code Show Output
/*
* Form text field layout:
* Specify the layout of a form field of type "textfield" for displaying a date
*
* Create a text field with equidistant subfields for storing a date.
* The following field properties are defined: font and font size, border and
* fill color, initial value, maximum characters allowed, scroll behaviour,
* and tootip.
*
* Required software: PDFlib/PDFlib+PDI/PPS 9
* Required data: none
*/
package com.pdflib.cookbook.pdflib.form_fields;
import com.pdflib.pdflib;
import com.pdflib.PDFlibException;
public class form_textfield_layout
{
public static void main (String argv[])
{
/* This is where the data files are. Adjust as necessary */
String searchpath = "../input";
String outfile = "form_textfield_layout.pdf";
String title = "Form Text Field Layout";
pdflib p = null;
int exitcode = 0;
String optlist;
int font, monospaced_font;
double fontsize, ascender, descender;
double width=140, height=30, llx = 10, lly = 700;
try {
p = new pdflib();
/* This means we must check return values of load_font() etc. */
p.set_option("errorpolicy=return");
p.set_option("searchpath={" + searchpath + "}");
if (p.begin_document(outfile, "") == -1)
throw new Exception("Error: " + p.get_errmsg());
p.set_info("Creator", "PDFlib Cookbook");
p.set_info("Title", title);
font = p.load_font("Helvetica", "winansi", "");
if (font == -1)
throw new Exception("Error: " + p.get_errmsg());
monospaced_font = p.load_font("Courier", "winansi", "");
if (monospaced_font == -1)
throw new Exception("Error: " + p.get_errmsg());
/* Start page */
p.begin_page_ext(0, 0, " width=a4.width height=a4.height");
/* Adjust the font size to match the field height: Retrieve the
* ascender and the descender (the latter is usually negative) of a
* hypothetical font size equal to the field height and use the font
* size resulting from the sum of ascender and (positive) descender as
* a starting point. Then, decrease the font size by e.g. 20% to leave
* some empty space from the field borders.
*/
ascender = p.info_font(monospaced_font, "ascender", "fontsize=" +
height);
descender = p.info_font(monospaced_font, "descender", "fontsize=" +
height);
fontsize = (ascender - descender) * 0.8;
/* Create a form field of type "textfield" called "date" with a
* background color of light blue and a black border.
* Set an initial date (currentvalue={Apr 15 2020})
* Allow a maximum of 11 characters to be entered (maxchar=11).
* The characters are not moved out of the field if the field size is
* reached (scrollable=false).
* Display equidistant subfields for each character (comb=true).
* A tooltip is displayed when the user moves in the field
* tooltip={Enter a date}.
*/
optlist = "backgroundcolor={rgb 0.95 0.95 1} bordercolor={gray 0} " +
"currentvalue={Apr 15 2020} maxchar=11 scrollable=false comb=true " +
"tooltip={Enter a date} font=" + monospaced_font +
" fontsize=" + fontsize;
p.create_field(llx, lly, llx + width, lly + height, "date", "textfield",
optlist);
lly-=40;
p.setfont(font, 12);
p.fit_textline("Form text field with an initial value set. The " +
"characters are placed in equidistant subfields.", llx, lly, "");
p.fit_textline("A maximum of 11 characters is allowed. The text is " +
"not allowed to scroll out of the window.", llx, lly-=20, "");
p.fit_textline("A tooltip is displayed when the mouse moves over the " +
"field.", llx, lly-=20, "");
p.end_page_ext("");
p.end_document("");
} catch (PDFlibException e) {
System.err.println("PDFlib exception occurred:");
System.err.println("[" + e.get_errnum() + "] " + e.get_apiname()
+ ": " + e.get_errmsg());
exitcode = 1;
} catch (Exception e) {
System.err.println(e);
exitcode = 1;
} finally {
if (p != null) {
p.delete();
}
System.exit(exitcode);
}
}
}