diff options
| author | Sven Eisenhauer <sven@sven-eisenhauer.net> | 2023-11-10 15:11:48 +0100 |
|---|---|---|
| committer | Sven Eisenhauer <sven@sven-eisenhauer.net> | 2023-11-10 15:11:48 +0100 |
| commit | 33613a85afc4b1481367fbe92a17ee59c240250b (patch) | |
| tree | 670b842326116b376b505ec2263878912fca97e2 /Master/Reference Architectures and Patterns/hjp5/examples/SimpleFilePrinter.java | |
| download | Studium-33613a85afc4b1481367fbe92a17ee59c240250b.tar.gz Studium-33613a85afc4b1481367fbe92a17ee59c240250b.tar.bz2 | |
Diffstat (limited to 'Master/Reference Architectures and Patterns/hjp5/examples/SimpleFilePrinter.java')
| -rw-r--r-- | Master/Reference Architectures and Patterns/hjp5/examples/SimpleFilePrinter.java | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/Master/Reference Architectures and Patterns/hjp5/examples/SimpleFilePrinter.java b/Master/Reference Architectures and Patterns/hjp5/examples/SimpleFilePrinter.java new file mode 100644 index 0000000..043fa38 --- /dev/null +++ b/Master/Reference Architectures and Patterns/hjp5/examples/SimpleFilePrinter.java @@ -0,0 +1,124 @@ +/* SimpleFilePrinter.java */
+
+import java.awt.*;
+import java.awt.print.*;
+import java.io.*;
+
+public class SimpleFilePrinter
+implements Printable
+{
+ //---Konstanten--------------------------------------
+ private static final int RESMUL = 4;
+
+ //---Membervariablen---------------------------------
+ private PrinterJob pjob;
+ private PageFormat pageformat;
+ private FilePrintHelper fph;
+ private String fname;
+ private RandomAccessFile in;
+
+ //---Konstruktoren-----------------------------------
+ public SimpleFilePrinter(String fname)
+ {
+ this.pjob = PrinterJob.getPrinterJob();
+ this.fname = fname;
+ }
+
+ //---Öffentliche Methoden----------------------------
+ public boolean setupPageFormat()
+ {
+ PageFormat defaultPF = pjob.defaultPage();
+ this.pageformat = pjob.pageDialog(defaultPF);
+ pjob.setPrintable(this, this.pageformat);
+ return (this.pageformat != defaultPF);
+ }
+
+ public boolean setupJobOptions()
+ {
+ return pjob.printDialog();
+ }
+
+ public void printFile()
+ throws PrinterException, IOException
+ {
+ fph = new FilePrintHelper();
+ in = new RandomAccessFile(fname, "r");
+ pjob.print();
+ in.close();
+ }
+
+ //---Implementierung von Printable-------------------
+ public int print(Graphics g, PageFormat pf, int page)
+ throws PrinterException
+ {
+ int ret = PAGE_EXISTS;
+ String line = null;
+ try {
+ if (fph.knownPage(page)) {
+ in.seek(fph.getFileOffset(page));
+ line = in.readLine();
+ } else {
+ long offset = in.getFilePointer();
+ line = in.readLine();
+ if (line == null) {
+ ret = NO_SUCH_PAGE;
+ } else {
+ fph.createPage(page);
+ fph.setFileOffset(page, offset);
+ }
+ }
+ if (ret == PAGE_EXISTS) {
+ //Seite ausgeben, Grafikkontext vorbereiten
+ Graphics2D g2 = (Graphics2D)g;
+ g2.scale(1.0 / RESMUL, 1.0 / RESMUL);
+ int ypos = (int)pf.getImageableY() * RESMUL;
+ int xpos = ((int)pf.getImageableX() + 2) * RESMUL;
+ int yd = 12 * RESMUL;
+ int ymax = ypos + (int)pf.getImageableHeight() * RESMUL - yd;
+ //Seitentitel ausgeben
+ ypos += yd;
+ g2.setColor(Color.black);
+ g2.setFont(new Font("Monospaced", Font.BOLD, 10 * RESMUL));
+ g.drawString(fname + ", Seite " + (page + 1), xpos, ypos);
+ g.drawLine(
+ xpos,
+ ypos + 6 * RESMUL,
+ xpos + (int)pf.getImageableWidth() * RESMUL,
+ ypos + 6 * RESMUL
+ );
+ ypos += 2 * yd;
+ //Zeilen ausgeben
+ g2.setColor(new Color(0, 0, 127));
+ g2.setFont(new Font("Monospaced", Font.PLAIN, 10 * RESMUL));
+ while (line != null) {
+ g.drawString(line, xpos, ypos);
+ ypos += yd;
+ if (ypos >= ymax) {
+ break;
+ }
+ line = in.readLine();
+ }
+ }
+ } catch (IOException e) {
+ throw new PrinterException(e.toString());
+ }
+ return ret;
+ }
+
+ //---Main--------------------------------------------
+ public static void main(String[] args)
+ {
+ SimpleFilePrinter sfp = new SimpleFilePrinter(args[0]);
+ if (sfp.setupPageFormat()) {
+ if (sfp.setupJobOptions()) {
+ try {
+ sfp.printFile();
+ } catch (Exception e) {
+ System.err.println(e.toString());
+ System.exit(1);
+ }
+ }
+ }
+ System.exit(0);
+ }
+}
\ No newline at end of file |