Example usage for java.awt Canvas Canvas

Introduction

In this page you can find the example usage for java.awt Canvas Canvas.

Prototype

public Canvas() 

Source Link

Document

Constructs a new Canvas.

Usage

From source file:PaintAWTInsideSWT.java

public static void main(String[] args) {
    final Display display = new Display();
    final Shell shell = new Shell(display);
    shell.setLayout(new FillLayout());
    Composite composite = new Composite(shell, SWT.EMBEDDED);

    Frame frame = SWT_AWT.new_Frame(composite);
    Canvas canvas = new Canvas() {
        public void paint(Graphics g) {
            Dimension d = getSize();
            g.drawLine(0, 0, d.width, d.height);
        }//from w w  w.ja  v  a 2  s .c  om
    };
    frame.add(canvas);

    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    display.dispose();
}

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From source file:org.eclipse.swt.snippets.Snippet155.java

public static void main(String[] args) {
    final Display display = new Display();
    final Shell shell = new Shell(display);
    shell.setText("Snippet 155");
    shell.setLayout(new FillLayout());
    Composite composite = new Composite(shell, SWT.EMBEDDED);

    /* Draw an X using AWT */
    Frame frame = SWT_AWT.new_Frame(composite);
    Canvas canvas = new Canvas() {
        @Override//from  ww  w.j a  v  a 2s  .  c o m
        public void paint(Graphics g) {
            Dimension d = getSize();
            g.drawLine(0, 0, d.width, d.height);
            g.drawLine(d.width, 0, 0, d.height);
        }
    };
    frame.add(canvas);

    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    display.dispose();
}

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From source file:org.eclipse.swt.snippets.Snippet337.java

public static void main(String args[]) {
    display = new Display();
    EventQueue.invokeLater(() -> {
        JFrame mainFrame = new JFrame("Main Window");
        mainFrame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
        mainFrame.addWindowListener(new Snippet337.CloseListener());
        JPanel mainPanel = new JPanel();
        mainPanel.setLayout(new FlowLayout());
        JButton launchBrowserButton = new JButton("Launch Browser");
        launchBrowserButton.addActionListener(e -> {
            JFrame childFrame = new JFrame();
            final Canvas canvas = new Canvas();
            childFrame.setSize(850, 650);
            childFrame.getContentPane().add(canvas);
            childFrame.setVisible(true);
            display.asyncExec(() -> {
                Shell shell = SWT_AWT.new_Shell(display, canvas);
                shell.setSize(800, 600);
                Browser browser = new Browser(shell, SWT.NONE);
                browser.setLayoutData(new GridData(GridData.FILL_BOTH));
                browser.setSize(800, 600);
                browser.setUrl("http://www.eclipse.org");
                shell.open();/*w ww .  j  a v a 2  s.  c o m*/
            });
        });

        mainPanel.add(new JTextField("a JTextField"));
        mainPanel.add(launchBrowserButton);
        mainFrame.getContentPane().add(mainPanel, BorderLayout.CENTER);
        mainFrame.pack();
        mainFrame.setVisible(true);
    });
    display.addListener(SWT.Close, event -> EventQueue.invokeLater(() -> {
        Frame[] frames = Frame.getFrames();
        for (int i = 0; i < frames.length; i++) {
            frames[i].dispose();
        }
    }));
    while (!display.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
}

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From source file:org.eclipse.swt.snippets.Snippet361.java

public static void main(String[] args) {
    final Display display = new Display();
    final Shell shell = new Shell(display);
    shell.setText("Snippet 361");
    shell.setText("Translate and Rotate an AWT Image in an SWT GUI");
    shell.setLayout(new GridLayout(8, false));

    Button fileButton = new Button(shell, SWT.PUSH);
    fileButton.setText("&Open Image File");
    fileButton.addSelectionListener(widgetSelectedAdapter(e -> {
        String filename = new FileDialog(shell).open();
        if (filename != null) {
            image = Toolkit.getDefaultToolkit().getImage(filename);
            canvas.repaint();//from  w w  w  . j a  v a  2 s  .co m
        }
    }));

    new Label(shell, SWT.NONE).setText("Translate &X by:");
    final Combo translateXCombo = new Combo(shell, SWT.NONE);
    translateXCombo.setItems("0", "image width", "image height", "100", "200");
    translateXCombo.select(0);
    translateXCombo.addModifyListener(e -> {
        translateX = numericValue(translateXCombo);
        canvas.repaint();
    });

    new Label(shell, SWT.NONE).setText("Translate &Y by:");
    final Combo translateYCombo = new Combo(shell, SWT.NONE);
    translateYCombo.setItems("0", "image width", "image height", "100", "200");
    translateYCombo.select(0);
    translateYCombo.addModifyListener(e -> {
        translateY = numericValue(translateYCombo);
        canvas.repaint();
    });

    new Label(shell, SWT.NONE).setText("&Rotate by:");
    final Combo rotateCombo = new Combo(shell, SWT.NONE);
    rotateCombo.setItems("0", "Pi", "Pi/2", "Pi/4", "Pi/8");
    rotateCombo.select(0);
    rotateCombo.addModifyListener(e -> {
        rotate = numericValue(rotateCombo);
        canvas.repaint();
    });

    Button printButton = new Button(shell, SWT.PUSH);
    printButton.setText("&Print Image");
    printButton.addSelectionListener(widgetSelectedAdapter(e -> {
        performPrintAction(display, shell);
    }));

    composite = new Composite(shell, SWT.EMBEDDED | SWT.BORDER);
    GridData data = new GridData(SWT.FILL, SWT.FILL, true, true, 8, 1);
    data.widthHint = 640;
    data.heightHint = 480;
    composite.setLayoutData(data);
    Frame frame = SWT_AWT.new_Frame(composite);
    canvas = new Canvas() {
        @Override
        public void paint(Graphics g) {
            if (image != null) {
                g.setColor(Color.WHITE);
                g.fillRect(0, 0, canvas.getWidth(), canvas.getHeight());

                /* Use Java2D here to modify the image as desired. */
                Graphics2D g2d = (Graphics2D) g;
                AffineTransform t = new AffineTransform();
                t.translate(translateX, translateY);
                t.rotate(rotate);
                g2d.setTransform(t);
                /*------------*/

                g.drawImage(image, 0, 0, this);
            }
        }
    };
    frame.add(canvas);
    composite.getAccessible().addAccessibleListener(new AccessibleAdapter() {
        @Override
        public void getName(AccessibleEvent e) {
            e.result = "Image drawn in AWT Canvas";
        }
    });

    shell.pack();
    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    display.dispose();
}

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From source file:SampleAWTRenderer.java

/**
 * Returns an AWT component that it will render to. Returns null
 * if it is not rendering to an AWT component.
 *///w w w.  ja  va  2 s  .  co m
public java.awt.Component getComponent() {
    if (component == null) {
        component = new Canvas() {
            public Dimension getPreferredSize() {
                return new Dimension(getInWidth(), getInHeight());
            }

            public void update(Graphics g) {
            }

            public void paint(Graphics g) {
                // TODO: Need to repaint image if the movie is in paused state
            }

        };
    }

    return component;
}

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From source file:biometricgui.MainWindow.java

void runMedia(String filePath) {
    NativeDiscovery nd = new NativeDiscovery();
    if (!nd.discover()) {
        System.out.println("VLC not found");
        System.exit(-1);//w w  w  . ja v  a  2 s  .  c  om
    }
    Canvas canvas = new Canvas();
    jPanel1.add(canvas);
    canvas.setSize(jPanel1.getSize());
    jPanel1.revalidate();
    jPanel1.repaint();

    MediaPlayerFactory mediaPlayerFactory = new MediaPlayerFactory();
    EmbeddedMediaPlayer mediaPlayer = mediaPlayerFactory.newEmbeddedMediaPlayer();
    CanvasVideoSurface videoSurface = mediaPlayerFactory.newVideoSurface(canvas);
    mediaPlayer.setVideoSurface(videoSurface);
    jLabel2.setVisible(false);
    mediaPlayer.playMedia(filePath);
}

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From source file:net.wurstclient.hooks.FrameHook.java

public static void createFrame(DefaultResourcePack mcDefaultResourcePack, Logger logger) throws LWJGLException {
    // check if frame should be created
    if (!isAutoMaximize() && !WurstBot.isEnabled())
        return;/*from   www .  ja  v a2s.  c  o  m*/

    // create frame
    frame = new JFrame("Minecraft 1.8");

    // add LWJGL
    Canvas canvas = new Canvas();
    canvas.setBackground(new Color(16, 16, 16));
    Display.setParent(canvas);
    Minecraft mc = Minecraft.getMinecraft();
    canvas.setSize(mc.displayWidth, mc.displayHeight);
    frame.add(canvas);

    // configure frame
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.pack();
    frame.setLocationRelativeTo(null);

    // add icons
    InputStream icon16 = null;
    InputStream icon32 = null;
    try {
        icon16 = mcDefaultResourcePack.func_152780_c(new ResourceLocation("icons/icon_16x16.png"));
        icon32 = mcDefaultResourcePack.func_152780_c(new ResourceLocation("icons/icon_32x32.png"));
        ArrayList<BufferedImage> icons = new ArrayList<>();
        icons.add(ImageIO.read(icon16));
        icons.add(ImageIO.read(icon32));
        frame.setIconImages(icons);
    } catch (Exception e) {
        logger.error("Couldn't set icon", e);
    } finally {
        IOUtils.closeQuietly(icon16);
        IOUtils.closeQuietly(icon32);
    }

    // show frame
    if (!WurstBot.isEnabled())
        frame.setVisible(true);
}

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From source file:tv.dyndns.kishibe.qmaclone.server.IconUploadServletStub.java

private void processRequest(HttpServletRequest request, HttpServletResponse response)
        throws IOException, ServletException {
    logger.log(Level.INFO, request.toString());

    FileItemFactory factory = new DiskFileItemFactory();
    ServletFileUpload upload = new ServletFileUpload(factory);
    upload.setSizeMax(64L * 1024L);/*from   w  w  w.j  a v a  2 s.c o m*/
    List<FileItem> items = null;

    try {
        List<FileItem> temp = upload.parseRequest(request);
        items = temp;
    } catch (FileUploadException e) {
        writeResponse(response, Constant.ICON_UPLOAD_RESPONSE_FAILED_TO_PARSE_REQUEST);
        return;
    }

    String userCode = null;
    BufferedImage inputImage = null;
    long originalFileSize = 0;

    for (FileItem item : items) {
        if (item.isFormField()) {
            String key = item.getFieldName();
            String value = item.getString();

            if (key.equals(Constant.FORM_NAME_USER_CODE)) {
                userCode = value;
            }

            continue;
        }

        // ??
        originalFileSize = item.getSize();
        try (InputStream inputStream = item.getInputStream()) {
            inputImage = ImageIO.read(inputStream);
        } catch (IOException e) {
            writeResponse(response, Constant.ICON_UPLOAD_RESPONSE_FAILED_TO_DETECT_IMAGE_FILE_TYPE);
            return;
        }

        if (inputImage == null) {
            writeResponse(response, Constant.ICON_UPLOAD_RESPONSE_FAILED_TO_DETECT_IMAGE_FILE_TYPE);
            return;
        }
    }

    if (userCode == null || inputImage == null) {
        writeResponse(response, Constant.ICON_UPLOAD_RESPONSE_REQUEST_FORMAT_ERROR);
        return;
    }

    String extension = "jpg";
    String fileTitle = Utility.createFileName();
    String fileName = fileTitle + "." + extension;

    // 
    // TODO(nodchip): ?
    int size = Constant.ICON_SIZE * 2;
    ImageFilter imageFilter = new AreaAveragingScaleFilter(size, size);
    Image middleImage = new Canvas().createImage(new FilteredImageSource(inputImage.getSource(), imageFilter));
    BufferedImage outputImage = new BufferedImage(size, size, BufferedImage.TYPE_INT_RGB);
    outputImage.createGraphics().drawImage(middleImage, 0, 0, size, size, null);

    // ???
    new File(Constant.ICON_FOLDER_PATH).mkdirs();
    File outputFile = new File(Constant.ICON_FOLDER_PATH, fileName);
    ImageIO.write(outputImage, "jpg", outputFile);

    logger.log(Level.INFO, String.format("%d bytes -> %d bytes (%s)", originalFileSize, outputFile.length(),
            outputFile.getPath()));

    // ???
    int userId = Integer.parseInt(userCode);
    PacketUserData userData;
    try {
        userData = database.getUserData(userId);
    } catch (DatabaseException e) {
        logger.log(Level.WARNING, "????????", e);
        throw new ServletException(e);
    }
    File oldFile = new File(Constant.ICON_FOLDER_PATH, userData.imageFileName);
    if (oldFile.isFile() && !oldFile.getName().equals(Constant.ICON_NO_IMAGE)) {
        oldFile.delete();
    }
    userData.imageFileName = fileName;
    try {
        database.setUserData(userData);
    } catch (DatabaseException e) {
        logger.log(Level.WARNING, "???????", e);
        throw new ServletException(e);
    }

    // ????
    writeResponse(response, Constant.ICON_UPLOAD_RESPONSE_OK);
}

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