zprintpreviewframe.java

用Java写的报表.功能如下: 0.内建网络打印,网络预览功能！ 1.文件操作。包括url 指定的文件。 2.全功能打印支持。包括打印预览。 3.Undo 和 redo。 4.合并单元格。 5.Cel

/*
 * Copyright 2002 EZCell , Inc. All rights reserved.
 * Version  1.0.7.
 * Author   W.John
 */
package ezcell;

import java.awt.*;
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import java.net.*;

import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JToggleButton;
import javax.swing.JToolBar;


/**
 * put your documentation comment here
 */
class ZPrintPreviewFrame extends JFrame {
    private _PrintPreviewToolBar toolbar = new _PrintPreviewToolBar(this);
    private JLabel pageNumber = new JLabel();

    // viewer
    private ZPrintPreview viewer;

    // current document
    private ZDocument doc;
    private ZPage currentPage;

    // current page info
    private int pageIndex;
    private Dimension zoomedPageSize = new Dimension(400, 600); //
    private float scale = 1.0f;

    /**
     * put your documentation comment here
     * @param     ZDocument document
     */
    public ZPrintPreviewFrame(ZDocument doc) {
        super();
        this.doc = doc;
        zoomedPageSize = new Dimension(doc.getPage(0).getWidth(),
                                       doc.getPage(0).getHeight());
        init();

        // center in the desktop
    }

    /**
     * put your documentation comment here
     * @param enable
     */
    public void setMarginable(boolean enable) {
        viewer.setMarginable(enable);
    }

    /**
     * put your documentation comment here
     */
    public void firstPage() {
        pageIndex = 0;
        renderPage();
    }

    /**
     * put your documentation comment here
     */
    public void lastPage() {
        pageIndex = doc.getPageCount() - 1;
        renderPage();
    }

    /**
     * put your documentation comment here
     */
    public void nextPage() {
        pageIndex++;

        if (pageIndex > (doc.getPageCount() - 1)) {
            pageIndex--;
        }

        renderPage();
    }

    /**
     * put your documentation comment here
     */
    public void previousPage() {
        pageIndex--;

        if (pageIndex < 0) {
            pageIndex = 0;
        }

        renderPage();
    }

    /**
     * put your documentation comment here
     */
    public void print() {
        try {
            ZPrinter.getPrinter().print(doc, false);
        } catch (Exception ex) {
        }
    }

    /**
     * put your documentation comment here
     */
    public void zoomIn() {
        if (scale > 5.0) {
            return;
        }

        scale += ((scale > 0.9) ? 0.5 : 0.1);
        doc.setScale(scale);
    }

    /**
     * put your documentation comment here
     */
    public void zoomOut() {
        if (scale < 0.3) {
            return;
        }

        scale -= ((scale > 1) ? 0.5 : 0.1);
        doc.setScale(scale);
    }

    /**
     * put your documentation comment here
     */
    private void init() {
        //--- Init this frame
        this.getContentPane().setLayout(new BorderLayout());

        JPanel toolbarPanel = new JPanel();
        toolbarPanel.setLayout(new BorderLayout());
        toolbarPanel.add(toolbar, BorderLayout.CENTER);
        pageNumber.setPreferredSize(new Dimension(60, 30));
        toolbarPanel.add(pageNumber, BorderLayout.EAST);

        ZSheetState us = new ZSheetState(doc.getPage(0).getBody().getSheet());
        viewer = new ZPrintPreview(doc, ZDocument.NONE);
        this.getContentPane().add(toolbarPanel, BorderLayout.NORTH);
        this.getContentPane().add(viewer, BorderLayout.CENTER);
        this.setTitle("Print preview:" + doc.getTitle());


        // this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        doc.setScale(.5f);
        this.pack();

        Dimension ss = Toolkit.getDefaultToolkit().getScreenSize();
        Dimension cs = getSize();
        setLocation((ss.width - cs.width) / 2, (ss.height - cs.height) / 2);
        this.show();


        //--- Init the pagePanel
        //  toolbarPanel.setBackground(Color.white);
        renderPage();
    }

    /**
     * put your documentation comment here
     */
    private void renderPage() {
        doc.setPage(doc.getPage(pageIndex));
        pageNumber.setText((pageIndex + 1) + "/" + doc.getPageCount());
    }

    /**
     * put your documentation comment here
     */
    public class _PrintPreviewToolBar extends JToolBar
        implements ActionListener {
        private JButton firstPage = new ZToolButton();
        private JButton lastPage = new ZToolButton();
        private JButton nextPage = new ZToolButton();
        private JButton previousPage = new ZToolButton();
        private JButton zoomIn = new ZToolButton();
        private JButton zoomOut = new ZToolButton();
        private JButton print = new ZToolButton();
        ZPrintPreviewFrame frame;

        /**
         * put your documentation comment here
         * @param         ZPrintPreviewFrame frame
         */
        public _PrintPreviewToolBar(ZPrintPreviewFrame frame) {
            super();
            this.frame = frame;


            //   this.setRollover(true) ;// only work for jdk1.4
            init();
        }

        /**
         * Method: actionPerformed <p>
         *
         * @param parEvent a value of type ActionEvent
         */
        public void actionPerformed(ActionEvent parEvent) {
            String command = parEvent.getActionCommand();

            if (command.equals("nextPage")) {
                frame.nextPage();
            } else if (command.equals("previousPage")) {
                frame.previousPage();
            } else if (command.equals("firstPage")) {
                frame.firstPage();
            } else if (command.equals("lastPage")) {
                frame.lastPage();
            } else if (command.equals("print")) {
                frame.print();
            } else if (command.equals("zoomIn")) {
                frame.zoomIn();
            } else if (command.equals("zoomOut")) {
                frame.zoomOut();
            } else if (command.equals("marginable")) {
                frame.setMarginable(((JToggleButton) parEvent.getSource()).isSelected());
            }
        }

        /**
         * put your documentation comment here
         */
        private void init() {
            try {
                //--- Init the buttons
                firstPage.setIcon(
                        new ImageIcon(getClass().getResource("/icons/FirstPage.gif")));
                firstPage.setActionCommand("firstPage");
                firstPage.addActionListener(this);
                firstPage.setMaximumSize(new Dimension(25, 25));
                previousPage.setIcon(
                        new ImageIcon(getClass().getResource("/icons/previouspage.gif")));
                previousPage.setActionCommand("previousPage");
                previousPage.addActionListener(this);

                nextPage.setIcon(
                        new ImageIcon(getClass().getResource("/icons/nextpage.gif")));
                nextPage.setActionCommand("nextPage");
                nextPage.addActionListener(this);

                lastPage.setIcon(
                        new ImageIcon(getClass().getResource("/icons/lastpage.gif")));
                lastPage.setActionCommand("lastPage");
                lastPage.addActionListener(this);

                zoomIn.setIcon(
                        new ImageIcon(getClass().getResource("/icons/lastpage.gif")));
                zoomIn.setActionCommand("zoomIn");
                zoomIn.addActionListener(this);


                //          zoomIn.setEnabled(false);
                zoomOut.setIcon(
                        new ImageIcon(getClass().getResource("/icons/zoomout.gif")));
                zoomOut.setActionCommand("zoomOut");
                zoomOut.addActionListener(this);

                //            zoomOut.setEnabled(false);
                JToggleButton marginable = new ZToggleToolButton();
                marginable.setIcon(
                        new ImageIcon(getClass().getResource("/icons/marginer.gif")));
                marginable.setActionCommand("marginable");
                marginable.addActionListener(this);
                marginable.setSelected(true);

                print.setIcon(new ImageIcon(getClass().getResource("/icons/Print.gif")));
                print.setActionCommand("print");
                print.addActionListener(this);


                //--- Init the toolbar
                this.add(firstPage);
                this.add(previousPage);
                this.add(nextPage);
                this.add(lastPage);
                this.add(zoomIn);
                this.add(zoomOut);
                this.add(marginable);
                this.add(print);
            } catch (Exception e) {
            }
        }
    }

    class ZToolButton extends JButton {
        public Insets getInsets() {
            return new Insets(4, 4, 4, 4);
        }
    }

    class ZToggleToolButton extends JToggleButton {
        public Insets getInsets() {
            return new Insets(4, 4, 4, 4);
        }
    }
}