Example usage for org.eclipse.swt.widgets Display syncExec

Introduction

In this page you can find the example usage for org.eclipse.swt.widgets Display syncExec.

Prototype

public void syncExec(Runnable runnable) 

Source Link

Document

Causes the run() method of the runnable to be invoked by the user-interface thread at the next reasonable opportunity.

Usage

From source file:TableFillThread.java

public static void main(String[] args) {
    final Display display = new Display();
    final Shell shell = new Shell(display);
    shell.setText("Lazy Table");
    shell.setLayout(new FillLayout());
    final Table table = new Table(shell, SWT.BORDER | SWT.MULTI);
    table.setSize(200, 200);//from   ww  w .  j a v  a 2  s  . co m

    Thread thread = new Thread() {
        public void run() {
            for (int i = 0; i < 20000; i++) {
                final int[] index = new int[] { i };
                display.syncExec(new Runnable() {
                    public void run() {
                        if (table.isDisposed())
                            return;
                        TableItem item = new TableItem(table, SWT.NONE);
                        item.setText("Table Item " + index[0]);
                    }
                });
            }
        }
    };
    thread.start();
    shell.setSize(200, 200);
    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    display.dispose();
}

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From source file:SyncExecExample.java

public static void main(String[] args) {

    final Display display = new Display();
    Shell shell = new Shell(display);

    final Runnable print = new Runnable() {
        public void run() {
            System.out.println("Print from thread: \t" + Thread.currentThread().getName());
        }//  ww w  .  j  a va2  s . com
    };

    final Thread applicationThread = new Thread("applicationThread") {
        public void run() {
            System.out.println("Hello from thread: \t" + Thread.currentThread().getName());
            display.syncExec(print);
            System.out.println("Bye from thread: \t" + Thread.currentThread().getName());
        }
    };

    shell.setText("syncExec Example");
    shell.setSize(300, 100);

    Button button = new Button(shell, SWT.CENTER);
    button.setText("Click to start");
    button.setBounds(shell.getClientArea());
    button.addSelectionListener(new SelectionListener() {
        public void widgetDefaultSelected(SelectionEvent e) {
        }

        public void widgetSelected(SelectionEvent e) {
            applicationThread.start();
        }
    });

    shell.open();

    while (!shell.isDisposed()) {
        if (!display.readAndDispatch()) {// If no more entries in event queue
            display.sleep();
        }
    }

    display.dispose();

}

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From source file:Snippet7.java

public static void main(String[] args) {
    final Display display = new Display();
    final Image image = new Image(display, 16, 16);
    GC gc = new GC(image);
    gc.setBackground(display.getSystemColor(SWT.COLOR_RED));
    gc.fillRectangle(image.getBounds());
    gc.dispose();//from w w w  . ja  v a 2 s . c  o  m
    final Shell shell = new Shell(display);
    shell.setText("Lazy Table");
    shell.setLayout(new FillLayout());
    final Table table = new Table(shell, SWT.BORDER | SWT.MULTI);
    table.setSize(200, 200);
    Thread thread = new Thread() {
        public void run() {
            for (int i = 0; i < 20000; i++) {
                if (table.isDisposed())
                    return;
                final int[] index = new int[] { i };
                display.syncExec(new Runnable() {
                    public void run() {
                        if (table.isDisposed())
                            return;
                        TableItem item = new TableItem(table, SWT.NONE);
                        item.setText("Table Item " + index[0]);
                        item.setImage(image);
                    }
                });
            }
        }
    };
    thread.start();
    shell.setSize(200, 200);
    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    image.dispose();
    display.dispose();
}

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From source file:org.eclipse.swt.snippets.Snippet7.java

public static void main(String[] args) {
    final Display display = new Display();
    final Image image = new Image(display, 16, 16);
    GC gc = new GC(image);
    gc.setBackground(display.getSystemColor(SWT.COLOR_RED));
    gc.fillRectangle(image.getBounds());
    gc.dispose();/*from   w w w  .  j  a v a  2 s  .  c  o  m*/
    final Shell shell = new Shell(display);
    shell.setText("Lazy Table");
    shell.setLayout(new FillLayout());
    final Table table = new Table(shell, SWT.BORDER | SWT.MULTI);
    table.setSize(200, 200);
    Thread thread = new Thread() {
        @Override
        public void run() {
            for (int i = 0; i < 20000; i++) {
                if (table.isDisposed())
                    return;
                final int[] index = new int[] { i };
                display.syncExec(() -> {
                    if (table.isDisposed())
                        return;
                    TableItem item = new TableItem(table, SWT.NONE);
                    item.setText("Table Item " + index[0]);
                    item.setImage(image);
                });
            }
        }
    };
    thread.start();
    shell.setSize(200, 200);
    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    image.dispose();
    display.dispose();
}

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From source file:org.eclipse.swt.snippets.Snippet130.java

public static void main(String[] args) {
    final Display display = new Display();
    final Shell shell = new Shell(display);
    shell.setText("Snippet 130");
    shell.setLayout(new GridLayout());
    final Text text = new Text(shell, SWT.MULTI | SWT.BORDER | SWT.V_SCROLL);
    text.setLayoutData(new GridData(GridData.FILL_BOTH));
    final int[] nextId = new int[1];
    Button b = new Button(shell, SWT.PUSH);
    b.setText("invoke long running job");
    b.addSelectionListener(widgetSelectedAdapter(e -> {
        Runnable longJob = new Runnable() {
            boolean done = false;
            int id;

            @Override//  w  ww .  j a va 2 s . c  o m
            public void run() {
                Thread thread = new Thread(() -> {
                    id = nextId[0]++;
                    display.syncExec(() -> {
                        if (text.isDisposed())
                            return;
                        text.append("\nStart long running task " + id);
                    });
                    for (int i = 0; i < 100000; i++) {
                        if (display.isDisposed())
                            return;
                        System.out.println("do task that takes a long time in a separate thread " + id);
                    }
                    if (display.isDisposed())
                        return;
                    display.syncExec(() -> {
                        if (text.isDisposed())
                            return;
                        text.append("\nCompleted long running task " + id);
                    });
                    done = true;
                    display.wake();
                });
                thread.start();
                while (!done && !shell.isDisposed()) {
                    if (!display.readAndDispatch())
                        display.sleep();
                }
            }
        };
        BusyIndicator.showWhile(display, longJob);
    }));
    shell.setSize(250, 150);
    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    display.dispose();
}

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From source file:BusyCursorDisplay.java

public static void main(String[] args) {
    final Display display = new Display();
    final Shell shell = new Shell(display);
    shell.setLayout(new GridLayout());
    final Text text = new Text(shell, SWT.MULTI | SWT.BORDER | SWT.V_SCROLL);
    text.setLayoutData(new GridData(GridData.FILL_BOTH));
    final int[] nextId = new int[1];
    Button b = new Button(shell, SWT.PUSH);
    b.setText("invoke long running job");
    b.addSelectionListener(new SelectionAdapter() {
        public void widgetSelected(SelectionEvent e) {
            Runnable longJob = new Runnable() {
                boolean done = false;

                int id;

                public void run() {
                    Thread thread = new Thread(new Runnable() {
                        public void run() {
                            id = nextId[0]++;
                            display.syncExec(new Runnable() {
                                public void run() {
                                    if (text.isDisposed())
                                        return;
                                    text.append("\nStart long running task " + id);
                                }/* ww w  .j a va  2 s  .c  o m*/
                            });
                            for (int i = 0; i < 100000; i++) {
                                if (display.isDisposed())
                                    return;
                                System.out.println("do task that takes a long time in a separate thread " + id);
                            }
                            if (display.isDisposed())
                                return;
                            display.syncExec(new Runnable() {
                                public void run() {
                                    if (text.isDisposed())
                                        return;
                                    text.append("\nCompleted long running task " + id);
                                }
                            });
                            done = true;
                            display.wake();
                        }
                    });
                    thread.start();
                    while (!done && !shell.isDisposed()) {
                        if (!display.readAndDispatch())
                            display.sleep();
                    }
                }
            };
            BusyIndicator.showWhile(display, longJob);
        }
    });
    shell.setSize(250, 150);
    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    display.dispose();
}

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From source file:org.eclipse.swt.snippets.Snippet151.java

public static void main(String[] args) {
    final Display display = new Display();
    Shell shell = new Shell(display);
    shell.setText("Snippet 151");
    shell.setLayout(new FillLayout());
    final Table table = new Table(shell, SWT.BORDER | SWT.VIRTUAL);
    table.addListener(SWT.SetData, e -> {
        TableItem item = (TableItem) e.item;
        int index = table.indexOf(item);
        item.setText("Item " + data[index]);
    });//from   w w w. j  a  v  a2  s.  com
    Thread thread = new Thread() {
        @Override
        public void run() {
            int count = 0;
            Random random = new Random();
            while (count++ < 500) {
                if (table.isDisposed())
                    return;
                // add 10 random numbers to array and sort
                int grow = 10;
                int[] newData = new int[data.length + grow];
                System.arraycopy(data, 0, newData, 0, data.length);
                int index = data.length;
                data = newData;
                for (int j = 0; j < grow; j++) {
                    data[index++] = random.nextInt();
                }
                Arrays.sort(data);
                display.syncExec(() -> {
                    if (table.isDisposed())
                        return;
                    table.setItemCount(data.length);
                    table.clearAll();
                });
                try {
                    Thread.sleep(500);
                } catch (Throwable t) {
                }
            }
        }
    };
    thread.start();
    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    display.dispose();
}

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From source file:Snippet151.java

public static void main(String[] args) {
    final Display display = new Display();
    Shell shell = new Shell(display);
    shell.setLayout(new FillLayout());
    final Table table = new Table(shell, SWT.BORDER | SWT.VIRTUAL);
    table.addListener(SWT.SetData, new Listener() {
        public void handleEvent(Event e) {
            TableItem item = (TableItem) e.item;
            int index = table.indexOf(item);
            item.setText("Item " + data[index]);
        }/*  w  w w.  j  a v a2s .com*/
    });
    Thread thread = new Thread() {
        public void run() {
            int count = 0;
            Random random = new Random();
            while (count++ < 500) {
                if (table.isDisposed())
                    return;
                // add 10 random numbers to array and sort
                int grow = 10;
                int[] newData = new int[data.length + grow];
                System.arraycopy(data, 0, newData, 0, data.length);
                int index = data.length;
                data = newData;
                for (int j = 0; j < grow; j++) {
                    data[index++] = random.nextInt();
                }
                Arrays.sort(data);
                display.syncExec(new Runnable() {
                    public void run() {
                        if (table.isDisposed())
                            return;
                        table.setItemCount(data.length);
                        table.clearAll();
                    }
                });
                try {
                    Thread.sleep(500);
                } catch (Throwable t) {
                }
            }
        }
    };
    thread.start();
    shell.open();
    while (!shell.isDisposed() || thread.isAlive()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    display.dispose();
}

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From source file:org.amanzi.splash.chart.Charts.java

public static void openChartEditor(final IEditorInput editorInput, final String editorId) {
    IWorkbench workbench = PlatformUI.getWorkbench();
    final IWorkbenchPage page = workbench.getWorkbenchWindows()[0].getActivePage();
    Display display = Display.getCurrent();
    if (display == null) {
        display = Display.getDefault();// w  w w  . j av a 2s  .c o m
    }
    display.syncExec(new Runnable() {

        @Override
        public void run() {
            try {
                NeoSplashUtil.logn("Try to open editor " + editorId);
                page.openEditor(editorInput, editorId);
            } catch (PartInitException e) {
                NeoSplashUtil.logn(e.getMessage());
            }
        }
    });
}

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From source file:SWT2D.java

private void run() {
    // Create top level shell
    final Display display = new Display();
    final Shell shell = new Shell(display);
    shell.setText("Java 2D Example");
    // GridLayout for canvas and button
    shell.setLayout(new GridLayout());
    // Create container for AWT canvas
    final Composite canvasComp = new Composite(shell, SWT.EMBEDDED);
    // Set preferred size
    GridData data = new GridData();
    data.widthHint = 600;/*w ww .  j a va2  s  . c o  m*/
    data.heightHint = 500;
    canvasComp.setLayoutData(data);
    // Create AWT Frame for Canvas
    java.awt.Frame canvasFrame = SWT_AWT.new_Frame(canvasComp);
    // Create Canvas and add it to the Frame
    final java.awt.Canvas canvas = new java.awt.Canvas();
    canvasFrame.add(canvas);
    // Get graphical context and cast to Java2D
    final java.awt.Graphics2D g2d = (java.awt.Graphics2D) canvas.getGraphics();
    // Enable antialiasing
    g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
    // Remember initial transform
    final java.awt.geom.AffineTransform origTransform = g2d.getTransform();
    // Create Clear button and position it
    Button clearButton = new Button(shell, SWT.PUSH);
    clearButton.setText("Clear");
    data = new GridData();
    data.horizontalAlignment = GridData.CENTER;
    clearButton.setLayoutData(data);
    // Event processing for Clear button
    clearButton.addSelectionListener(new SelectionAdapter() {
        public void widgetSelected(SelectionEvent e) {
            // Delete word list and redraw canvas
            wordList.clear();
            canvasComp.redraw();
        }
    });
    // Process canvas mouse clicks
    canvas.addMouseListener(new java.awt.event.MouseListener() {
        public void mouseClicked(java.awt.event.MouseEvent e) {
        }

        public void mouseEntered(java.awt.event.MouseEvent e) {
        }

        public void mouseExited(java.awt.event.MouseEvent e) {
        }

        public void mousePressed(java.awt.event.MouseEvent e) {
            // Manage pop-up editor
            display.syncExec(new Runnable() {
                public void run() {
                    if (eShell == null) {
                        // Create new Shell: non-modal!
                        eShell = new Shell(shell, SWT.NO_TRIM | SWT.MODELESS);
                        eShell.setLayout(new FillLayout());
                        // Text input field
                        eText = new Text(eShell, SWT.BORDER);
                        eText.setText("Text rotation in the SWT?");
                        eShell.pack();
                        // Set position (Display coordinates)
                        java.awt.Rectangle bounds = canvas.getBounds();
                        org.eclipse.swt.graphics.Point pos = canvasComp.toDisplay(bounds.width / 2,
                                bounds.height / 2);
                        Point size = eShell.getSize();
                        eShell.setBounds(pos.x, pos.y, size.x, size.y);
                        // Open Shell
                        eShell.open();
                    } else if (!eShell.isVisible()) {
                        // Editor versteckt, sichtbar machen
                        eShell.setVisible(true);
                    } else {
                        // Editor is visible - get text
                        String t = eText.getText();
                        // set editor invisible
                        eShell.setVisible(false);
                        // Add text to list and redraw canvas
                        wordList.add(t);
                        canvasComp.redraw();
                    }
                }
            });
        }

        public void mouseReleased(java.awt.event.MouseEvent e) {
        }
    });
    // Redraw the canvas
    canvasComp.addPaintListener(new PaintListener() {
        public void paintControl(PaintEvent e) {
            // Pass the redraw task to AWT event queue
            java.awt.EventQueue.invokeLater(new Runnable() {
                public void run() {
                    // Compute canvas center
                    java.awt.Rectangle bounds = canvas.getBounds();
                    int originX = bounds.width / 2;
                    int originY = bounds.height / 2;
                    // Reset canvas
                    g2d.setTransform(origTransform);
                    g2d.setColor(java.awt.Color.WHITE);
                    g2d.fillRect(0, 0, bounds.width, bounds.height);
                    // Set font
                    g2d.setFont(new java.awt.Font("Myriad", java.awt.Font.PLAIN, 32));
                    double angle = 0d;
                    // Prepare star shape
                    double increment = Math.toRadians(30);
                    Iterator iter = wordList.iterator();
                    while (iter.hasNext()) {
                        // Determine text colors in RGB color cycle
                        float red = (float) (0.5 + 0.5 * Math.sin(angle));
                        float green = (float) (0.5 + 0.5 * Math.sin(angle + Math.toRadians(120)));
                        float blue = (float) (0.5 + 0.5 * Math.sin(angle + Math.toRadians(240)));
                        g2d.setColor(new java.awt.Color(red, green, blue));
                        // Redraw text
                        String text = (String) iter.next();
                        g2d.drawString(text, originX + 50, originY);
                        // Rotate for next text output
                        g2d.rotate(increment, originX, originY);
                        angle += increment;
                    }
                }
            });
        }
    });
    // Finish shell and open it
    shell.pack();
    shell.open();
    // SWT event processing
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    display.dispose();
}

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