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interactive/form_pushbutton

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/* $Id: form_pushbutton.java,v 1.10 2013/01/15 10:12:00 stm Exp $
 * Form pushbutton:
 * Create two form fields of type "pushbutton" for executing the "Print" and
 * "Save As" commands.
 * 
 * Create two form fields of type "pushbutton". Define two actions which
 * execute the Acrobat menu commands "File/Print" or "File/Save As",
 * respectively. Perform the Print or Save As action when the user clicks the
 * respective field. Represent the buttons using a caption or using an image
 * loaded as a template.
 * 
 * Required software: PDFlib/PDFlib+PDI/PPS 9
 * Required data: none
 */
package com.pdflib.cookbook.pdflib.interactive;

import com.pdflib.pdflib;
import com.pdflib.PDFlibException;

public class form_pushbutton
{
    public static void main (String argv[])
    {
    /* This is where the data files are. Adjust as necessary */
    String searchpath = "../input";
    String outfile = "form_pushbutton.pdf";
    String title = "Form Pushbutton";
    
    pdflib p = null;

    String optlist;
    String p_imagefile = "fileprint.jpg";
    String s_imagefile = "filesaveas.jpg"; 
    int font;
    double width=60, height=30, llx = 40, lly = 600;
    int pact, sact, pimg, simg;
    double pwidth, pheight, swidth, sheight;

    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 + " $Revision: 1.10 $");

        font = p.load_font("Helvetica", "winansi", "");
        if (font == -1)
            throw new Exception("Error: " + p.get_errmsg());
        
        /* Load the "Print" image as template */
        pimg = p.load_image("auto", p_imagefile, "template=true");
        if (pimg == -1)
            throw new Exception("Error: " + p.get_errmsg());
        
        /* Load the "Save As" image as template */
        simg = p.load_image("auto", s_imagefile, "template=true");
        if (simg == -1)
            throw new Exception("Error: " + p.get_errmsg());
        
        /* Create an action for executing the Acrobat command File/Print */
        pact = p.create_action("Named", "menuname=Print");
        
        /* Create an action for executing the Acrobat command File/Save As */
        sact = p.create_action("Named", "menuname=SaveAs");
        
        /* Start page */
        p.begin_page_ext(0, 0, " width=a4.width height=a4.height");
        
        p.setfont(font, 14);
        
        
        /* ------------------------------------------------------------
         * Create two pushbutton form fields for executing Acrobat menu 
         * commands and represent them using a caption
         * ------------------------------------------------------------
         */
        
        /* Output some descriptive text */
        p.fit_textline("Two buttons executing Acrobat menu commands and " +
            "represented by a caption:", llx, lly, "");
        lly-=60;
       
        /* Create the "print" and "save" form fields of type "pushbutton".
         * Provide the buttons with a light blue background
         * (backgroundcolor={rgb 0.95 0.95 1}) and 
         * a blue border (bordercolor={rgb 0.25 0 0.95}) with a default line
         * width of 1.
         * Supply a blue caption describing the menu command
         * (caption={Print} fillcolor={rgb 0.25 0 0.95}).
         * Define an individual tooltip for each button.
         * Supply the action defined above to be performed when the user
         * releases the mouse button inside the field's area
         * (action={up <actionhandle>}).
         * 
         */
        optlist = "bordercolor={rgb 0.25 0 0.95} " +
            "backgroundcolor={rgb 0.95 0.95 1} " +
            "fillcolor={rgb 0.25 0 0.95} font=" + font + " fontsize=14";
        
        p.create_field(llx, lly, llx + width, lly + height, "print",
            "pushbutton", optlist + " caption={Print} action={up " + pact + 
            "} tooltip={Print the document}");
        
        llx+=100;
        
        p.create_field(llx, lly, llx + width, lly + height, "save",
        	"pushbutton", optlist + " caption={Save As} action={up " + sact + 
            "} tooltip={Save the document}");
        
         
        /* ------------------------------------------------------------
         * Create two pushbutton form fields for executing Acrobat menu 
         * commands and represent them using images
         * ------------------------------------------------------------
         */
        llx=40;
        lly=400;
            
        /* Output some descriptive text */
        p.fit_textline("Two buttons executing Acrobat menu commands and " +
            "represented by an image:", llx, lly, "");
        lly-=60;
        
        /* Get the width and height of the "Print" image */
        pwidth = p.info_image(pimg, "imagewidth", "");
        pheight = p.info_image(pimg, "imageheight", "");
           
        /* Get the width and height of the "Save" image */
        swidth = p.info_image(pimg, "imagewidth", "");
        sheight = p.info_image(pimg, "imageheight", "");
        
        /* Create a "printicon" and a "saveicon" form field of type
         * "pushbutton".
         * Calculate the button width based on a fixed button
         * height as well as the image proportions.
         * Supply the action defined above to be performed when the user
         * releases the mouse button inside the field's area
         * (action={up <actionhandle>}).
         * Provide the buttons with an image (icon=<imagehandle>).
         * Define an individual tooltip for each button.
         * Fit the image completely into the button rectangle: because of 
         * a particular behaviour of Acrobat we need to define a border color
         * and set the line width to zero. 
         * .
         */
        double pbuttonwidth = pwidth/pheight*height;
        
        p.create_field(llx, lly, llx + pbuttonwidth, lly + height, "printicon",
            "pushbutton", "action={up " + pact + "} icon=" + pimg +
            " tooltip={Print the document} bordercolor={gray 0} linewidth=0" +
            " font=" + font);
        
        llx+=100;
        
        double sbuttonwidth = swidth/sheight*height;
        
        p.create_field(llx, lly, llx + sbuttonwidth, lly + height, "saveicon",
            "pushbutton", "action={up " + sact + "} icon=" + simg +
            " tooltip={Save the document} bordercolor={gray 0} linewidth=0" +
            " font=" + font);
        
        p.close_image(pimg);
        p.close_image(simg);
        p.end_page_ext("");
        
        p.end_document("");

        } catch (PDFlibException e) {
            System.err.print("PDFlib exception occurred:\n");
            System.err.print("[" + e.get_errnum() + "] " + e.get_apiname() +
                ": " + e.get_errmsg() + "\n");
        } catch (Exception e) {
            System.err.println(e.getMessage());
        } finally {
            if (p != null) {
                p.delete();
            }
        }
    }
}