Diskuze: vkládání prvků do jTabbedPane pomocí kódu

Jirka

Člen

Jirka:6.3.2014 14:28

Ahoj, prosil bych o pomoc s řešením vkládání prvků do jTabbedPane ručně.
řeším problém kdy aplikace napsaná v ruce funguje a její verze vytvořená přes NetBeans GUI nikoliv. pro funkčnost je nutné mít importované knihovny JEuclid http://sourceforge.net/…zip/download

aplikace má převádět zápis v MathML do grafické podoby v druhé záložce po přepnutí na ni. předem děkuji za jakékoliv vysvětlení proč se v druhém případě nic nezobrazí

první ruční je:

import java.awt.BorderLayout;
import java.awt.Container;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JSpinner;
import javax.swing.JTabbedPane;
import javax.swing.JTextArea;
import javax.swing.event.ChangeEvent;

import net.sourceforge.jeuclid.swing.JMathComponent;

public class MathMLTabbed extends JFrame{
        private JTextArea formulaSource;
        private JPanel drawingArea, editorArea;
        private JSpinner spinner;
        private JTabbedPane zalozky;

        public MathMLTabbed() {
                this.setTitle("MathML Example");
                this.setSize(500, 500);
                setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
                Container content = this.getContentPane();

                this.formulaSource = new JTextArea();
                editorArea = new JPanel();
                editorArea.setLayout(new BorderLayout());
                editorArea.add(new JScrollPane(this.formulaSource),BorderLayout.CENTER);
                editorArea.add(spinner = new JSpinner(),BorderLayout.NORTH);
                spinner.setValue(18);

                drawingArea = new JPanel();

                zalozky = new JTabbedPane();
                zalozky.addTab("MathML vstup", editorArea);
                zalozky.addTab("Vzorec", new JScrollPane(drawingArea));
                content.add(zalozky);

                zalozky.addChangeListener(new javax.swing.event.ChangeListener() {

                    @Override
                    public void stateChanged(ChangeEvent e) {
                        if(zalozky.getSelectedIndex() == 0)
                            drawingArea.removeAll();
                        if(zalozky.getSelectedIndex() == 1)
                            render();
                    }
                });

                String retezec = "<?xml version=\"1.0\"?>\r\n" +
                         "<!DOCTYPE math PUBLIC \"-//W3C//DTD MathML 2.0//EN\" \"http://www.w3.org/TR/MathML2/dtd/mathml2.dtd\">\r\n" +
                         "<math mode=\"display\">\r\n" +
                         "  <mrow>\r\n" +
                         "    <munderover>\r\n" +
                         "      <mo>&#x222B;</mo>\r\n" +
                         "      <mn>1</mn>\r\n" +
                         "      <mi>x</mi>\r\n" +
                         "    </munderover>\r\n" +
                         "    <mfrac>\r\n" +
                         "      <mi>dt</mi>\r\n" +
                         "      <mi>t</mi>\r\n" +
                         "    </mfrac>\r\n" +
                         "  </mrow>\r\n" +
                         "</math>";

                formulaSource.setText(retezec);
        }

        public void render() {
                        // get the text
                        String latex = formulaSource.getText();
                        // create a formula
                        JMathComponent formula = new JMathComponent();
                        drawingArea.add(formula);
                        formula.setFontSize((int)spinner.getValue());
                        formula.setContent(latex);
        }

        public static void main(String[] args) {
                MathMLTabbed frame = new MathMLTabbed();
                frame.setVisible(true);
        }
}

druhá pomocí NetBeans GUI bilder (soubor form)

import net.sourceforge.jeuclid.swing.JMathComponent;

public class okno extends javax.swing.JFrame {

    public okno() {
        initComponents();
        spiner.setValue(18);
        String retezec = "<?xml version=\"1.0\"?>\r\n" +
                         "<!DOCTYPE math PUBLIC \"-//W3C//DTD MathML 2.0//EN\" \"http://www.w3.org/TR/MathML2/dtd/mathml2.dtd\">\r\n" +
                         "<math mode=\"display\">\r\n" +
                         "  <mrow>\r\n" +
                         "    <munderover>\r\n" +
                         "      <mo>&#x222B;</mo>\r\n" +
                         "      <mn>1</mn>\r\n" +
                         "      <mi>x</mi>\r\n" +
                         "    </munderover>\r\n" +
                         "    <mfrac>\r\n" +
                         "      <mi>dt</mi>\r\n" +
                         "      <mi>t</mi>\r\n" +
                         "    </mfrac>\r\n" +
                         "  </mrow>\r\n" +
                         "</math>";

                formulaSource.setText(retezec);
    }

    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">
    private void initComponents() {

        zalozky = new javax.swing.JTabbedPane();
        MathML = new javax.swing.JPanel();
        spiner = new javax.swing.JSpinner();
        formulaSource = new javax.swing.JTextField();
        vzorec = new javax.swing.JPanel();
        pole = new javax.swing.JPanel();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

        zalozky.addChangeListener(new javax.swing.event.ChangeListener() {
            public void stateChanged(javax.swing.event.ChangeEvent evt) {
                zalozkyStateChanged(evt);
            }
        });

        formulaSource.setHorizontalAlignment(javax.swing.JTextField.LEFT);
        formulaSource.setText("jTextField1");

        javax.swing.GroupLayout MathMLLayout = new javax.swing.GroupLayout(MathML);
        MathML.setLayout(MathMLLayout);
        MathMLLayout.setHorizontalGroup(
            MathMLLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, MathMLLayout.createSequentialGroup()
                .addGroup(MathMLLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                    .addComponent(formulaSource, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, 410, Short.MAX_VALUE)
                    .addComponent(spiner))
                .addContainerGap())
        );
        MathMLLayout.setVerticalGroup(
            MathMLLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(MathMLLayout.createSequentialGroup()
                .addComponent(spiner, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(formulaSource, javax.swing.GroupLayout.DEFAULT_SIZE, 328, Short.MAX_VALUE))
        );

        zalozky.addTab("MathML", MathML);

        pole.setBackground(new java.awt.Color(255, 255, 0));

        javax.swing.GroupLayout poleLayout = new javax.swing.GroupLayout(pole);
        pole.setLayout(poleLayout);
        poleLayout.setHorizontalGroup(
            poleLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 420, Short.MAX_VALUE)
        );
        poleLayout.setVerticalGroup(
            poleLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 354, Short.MAX_VALUE)
        );

        javax.swing.GroupLayout vzorecLayout = new javax.swing.GroupLayout(vzorec);
        vzorec.setLayout(vzorecLayout);
        vzorecLayout.setHorizontalGroup(
            vzorecLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addComponent(pole, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
        );
        vzorecLayout.setVerticalGroup(
            vzorecLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addComponent(pole, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
        );

        zalozky.addTab("Vzorec", vzorec);

        getContentPane().add(zalozky, java.awt.BorderLayout.CENTER);

        pack();
    }// </editor-fold>

    private void zalozkyStateChanged(javax.swing.event.ChangeEvent evt) {
        if(zalozky.getSelectedIndex() == 0)
                            pole.removeAll();
        if(zalozky.getSelectedIndex() == 1)
                            render();
    }

    public static void main(String args[]) {
        /* Set the Nimbus look and feel */
        //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
        /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
         * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
         */
        try {
            for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
                if ("Nimbus".equals(info.getName())) {
                    javax.swing.UIManager.setLookAndFeel(info.getClassName());
                    break;
                }
            }
        } catch (ClassNotFoundException ex) {
            java.util.logging.Logger.getLogger(okno.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(okno.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(okno.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(okno.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }
        //</editor-fold>

        /* Create and display the form */
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new okno().setVisible(true);
            }
        });

    }

    public void render(){
        String latex = formulaSource.getText();

                        // create a formula
                        JMathComponent formula = new JMathComponent();
                        pole.add(formula);

                        formula.setContent(latex);
                        formula.setFontSize((int)spiner.getValue());
    }

    // Variables declaration - do not modify
    private javax.swing.JPanel MathML;
    private javax.swing.JTextField formulaSource;
    private javax.swing.JPanel pole;
    private javax.swing.JSpinner spiner;
    private javax.swing.JPanel vzorec;
    private javax.swing.JTabbedPane zalozky;
    // End of variables declaration
}

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6.3.2014 14:28

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