/* 
 * PDFlib client: pdfclock example in Java
 * Required software: PDFlib/PDFlib+PDI/PPS 9
 */

package com.pdflib.cookbook.pdflib.graphics;

import java.text.SimpleDateFormat;
import java.util.Date;
import com.pdflib.pdflib;
import com.pdflib.PDFlibException;

public class pdfclock {
    public static void main(String argv[]) {
        pdflib p = null;
        int tm_hour, tm_min, tm_sec, alpha;
        double RADIUS = 200.0;
        double MARGIN = 20.0;
        SimpleDateFormat format;
        Date now = new Date();

        try {
            p = new pdflib();

            /* This means we must check return values of load_font() etc. */
            p.set_option("errorpolicy=return");

            if (p.begin_document("pdfclock.pdf", "") == -1)
                throw new Exception("Error: " + p.get_errmsg());

            p.set_info("Creator", "pdfclock.java");
            p.set_info("Author", "Thomas Merz");
            p.set_info("Title", "PDF clock (Java)");

            p.begin_page_ext((int) (2 * (RADIUS + MARGIN)),
                    (int) (2 * (RADIUS + MARGIN)), "");

            p.translate(RADIUS + MARGIN, RADIUS + MARGIN);
            p.setcolor("fillstroke", "rgb", 0.0, 0.0, 1.0, 0.0);
            p.save();

            // minute strokes
            p.setlinewidth(2.0);
            for (alpha = 0; alpha < 360; alpha += 6) {
                p.rotate(6.0);
                p.moveto(RADIUS, 0.0);
                p.lineto(RADIUS - MARGIN / 3, 0.0);
                p.stroke();
            }

            p.restore();
            p.save();

            // 5 minute strokes
            p.setlinewidth(3.0);
            for (alpha = 0; alpha < 360; alpha += 30) {
                p.rotate(30.0);
                p.moveto(RADIUS, 0.0);
                p.lineto(RADIUS - MARGIN, 0.0);
                p.stroke();
            }

            format = new SimpleDateFormat("hh");
            tm_hour = Integer.parseInt(format.format(now));
            format = new SimpleDateFormat("mm");
            tm_min = Integer.parseInt(format.format(now));
            format = new SimpleDateFormat("ss");
            tm_sec = Integer.parseInt(format.format(now));

            // draw hour hand
            p.save();
            p.rotate((-((tm_min / 60.0) + tm_hour - 3.0) * 30.0));
            p.moveto(-RADIUS / 10, -RADIUS / 20);
            p.lineto(RADIUS / 2, 0.0);
            p.lineto(-RADIUS / 10, RADIUS / 20);
            p.closepath();
            p.fill();
            p.restore();

            // draw minute hand
            p.save();
            p.rotate((-((tm_sec / 60.0) + tm_min - 15.0) * 6.0));
            p.moveto(-RADIUS / 10, -RADIUS / 20);
            p.lineto(RADIUS * 0.8, 0.0);
            p.lineto(-RADIUS / 10, RADIUS / 20);
            p.closepath();
            p.fill();
            p.restore();

            // draw second hand
            p.setcolor("fillstroke", "rgb", 1.0, 0.0, 0.0, 0.0);
            p.setlinewidth(2);
            p.save();
            p.rotate(-((tm_sec - 15.0) * 6.0));
            p.moveto(-RADIUS / 5, 0.0);
            p.lineto(RADIUS, 0.0);
            p.stroke();
            p.restore();

            // draw little circle at center
            p.circle(0, 0, RADIUS / 30);
            p.fill();

            p.restore();
            p.end_page_ext("");
            p.end_document("");

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