Examples with Graphics java.awt.Graphics used on opensource projects

Example 1 with Graphics

use of java.awt.Graphics in project OpenNotebook by jaltekruse.

the class DocViewerPanel method makeDocPanel.

private JPanel makeDocPanel() {
    return new JPanel() {

        private static final long serialVersionUID = 1L;

        @Override
        public void paint(Graphics g) {
            // TODO - Stopwatch and logging
            //				System.out.println("painting doc:" + (new java.util.Date().getTime() - notebook.timeAtStart));
            //set the graphics object to render text and shapes with smooth lines
            Graphics2D g2d = (Graphics2D) g;
            if (!OpenNotebook.isMinimalGraphicsMode()) {
                g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
            }
            //pixels needed to render a page, and the minimum border space around it
            int pageXSize = (int) (getDoc().getWidth() * zoomLevel);
            int pageYSize = (int) (getDoc().getHeight() * zoomLevel);
            Rectangle viewPortRect = new Rectangle((int) docScrollPane.getViewport().getViewPosition().getX(), (int) docScrollPane.getViewport().getViewPosition().getY(), docScrollPane.getViewport().getWidth(), docScrollPane.getViewport().getHeight());
            //fill background with gray
            g.setColor(Color.GRAY.brighter());
            ((Graphics2D) g).fill(viewPortRect);
            Rectangle currPageRect;
            Point pageOrigin = null;
            //used to store origin of the part of the page that can be seen
            //and the sections overall width and height, both are in the user space at 72 dpi
            int xShowing, yShowing, xSizeShowing, ySizeShowing;
            for (int i = 0; i < doc.getNumPages(); i++) {
                //need to modify rectangle to properly calculate the portion of the page currently displayed
                //which will be given in the user space starting with the origin of the printable area at 0,0
                //and at 72 dpi
                pageOrigin = getPageOrigin(i);
                currPageRect = new Rectangle((int) pageOrigin.getX(), (int) pageOrigin.getY(), pageXSize, pageYSize);
                if (viewPortRect.intersects(currPageRect)) {
                    //render page only if it is in the current section of the document showing
                    if (viewPortRect.getX() < currPageRect.getX()) {
                        xShowing = 0;
                    } else {
                        xShowing = (int) ((viewPortRect.getX() - currPageRect.getX()) / zoomLevel);
                    }
                    if (viewPortRect.getY() < currPageRect.getY()) {
                        yShowing = 0;
                    } else {
                        yShowing = (int) ((viewPortRect.getY() - currPageRect.getY()) / zoomLevel);
                    }
                    pageGUI.drawPageWithDecorations(g, doc.getPage(i), new Point((int) pageOrigin.getX(), (int) pageOrigin.getY()), new Rectangle(xShowing, yShowing, 10, 0), zoomLevel);
                }
            }
            if (selectionRect != null) {
                pageGUI.polygonGUI.drawMathObject(selectionRect, g2d, getPageOrigin(selectionRect.getParentPage()), zoomLevel);
            }
            g.dispose();
        }
    };
}

Example 2 with Graphics

use of java.awt.Graphics in project jna by java-native-access.

the class AlphaMaskDemo method updateX11.

private void updateX11(boolean a, boolean i) {
    X11 x11 = X11.INSTANCE;
    X11.Window win = X11.Window.None;
    Display dpy = x11.XOpenDisplay(null);
    try {
        if (!alphaWindow.isDisplayable()) {
            alphaWindow.pack();
            if (System.getProperty("java.version").matches("^1\\.4\\..*"))
                alphaWindow.setVisible(true);
            win = new X11.Window((int) Native.getWindowID(alphaWindow));
            Window parent = alphaWindow.getOwner();
            Point where = parent.getLocationOnScreen();
            where.translate(parent.getWidth(), 0);
            alphaWindow.removeAll();
            alphaWindow.setLocation(where);
            alphaWindow.setBackground(new Color(0, 0, 0, 0));
        } else {
            win = new X11.Window((int) Native.getWindowID(alphaWindow));
        }
        if (i) {
            int w = image.getWidth(null);
            int h = image.getHeight(null);
            alphaWindow.setSize(w, h);
            if (buffer == null || buffer.size() != w * h * 4) {
                buffer = new com.sun.jna.Memory(w * h * 4);
                pixels = new int[w * h];
            }
            BufferedImage buf = new BufferedImage(w, h, BufferedImage.TYPE_INT_ARGB_PRE);
            Graphics g = buf.getGraphics();
            g.drawImage(image, 0, 0, w, h, null);
            long start = System.currentTimeMillis();
            long blitTime, putImageTime, write;
            GC gc = x11.XCreateGC(dpy, win, new NativeLong(0), null);
            long gcTime = System.currentTimeMillis();
            try {
                Raster raster = buf.getData();
                int[] pixel = new int[4];
                for (int y = 0; y < h; y++) {
                    for (int x = 0; x < w; x++) {
                        raster.getPixel(x, y, pixel);
                        int alpha = (pixel[3] & 0xFF) << 24;
                        int red = (pixel[2] & 0xFF);
                        int green = (pixel[1] & 0xFF) << 8;
                        int blue = (pixel[0] & 0xFF) << 16;
                        pixels[y * w + x] = alpha | red | green | blue;
                    }
                }
                blitTime = System.currentTimeMillis();
                X11.XWindowAttributes xwa = new X11.XWindowAttributes();
                x11.XGetWindowAttributes(dpy, win, xwa);
                X11.XImage image = x11.XCreateImage(dpy, xwa.visual, 32, X11.ZPixmap, 0, buffer, w, h, 32, w * 4);
                buffer.write(0, pixels, 0, pixels.length);
                write = System.currentTimeMillis();
                x11.XPutImage(dpy, win, gc, image, 0, 0, 0, 0, w, h);
                x11.XFree(image.getPointer());
                putImageTime = System.currentTimeMillis();
            } finally {
                if (gc != null)
                    x11.XFreeGC(dpy, gc);
            }
            long end = System.currentTimeMillis();
        //System.out.println("gc: " + (gcTime-start) + "ms");
        //System.out.println("blit: " + (blitTime-gcTime) + "ms");
        //System.out.println("write: " + (write-blitTime) + "ms");
        //System.out.println("put image: " + (putImageTime-write) + "ms");
        //System.out.println("total: " + (end-start) + "ms");
        }
    } finally {
        if (dpy != null)
            x11.XCloseDisplay(dpy);
    }
    if (a)
        WindowUtils.setWindowAlpha(alphaWindow, alpha);
    if (!alphaWindow.isVisible()) {
        alphaWindow.setVisible(true);
        // hack for initial refresh (X11)
        update(true, true);
    }
}

Example 3 with Graphics

use of java.awt.Graphics in project jna by java-native-access.

the class WindowUtilsTest method xtestReveal.

public void xtestReveal() throws Exception {
    final int SIZE = 200;
    System.setProperty("sun.java2d.noddraw", "true");
    GraphicsConfiguration gconfig = WindowUtils.getAlphaCompatibleGraphicsConfiguration();
    Window w;
    Container content;
    if (true) {
        JFrame frame = new JFrame(getName(), gconfig);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        content = frame.getContentPane();
        w = frame;
    } else {
        Frame frame = JOptionPane.getRootFrame();
        JWindow window = new JWindow(frame, gconfig);
        content = window.getContentPane();
        w = window;
    }
    final Window f = w;
    WindowUtils.setWindowTransparent(f, true);
    content.add(new JButton("Quit") {

        private static final long serialVersionUID = 1L;

        {
            addActionListener(new ActionListener() {

                public void actionPerformed(ActionEvent e) {
                    System.exit(0);
                }
            });
        }
    }, BorderLayout.SOUTH);
    content.add(new JComponent() {

        private static final long serialVersionUID = 1L;

        public Dimension getPreferredSize() {
            return new Dimension(SIZE, SIZE);
        }

        protected void paintComponent(Graphics graphics) {
            Graphics2D g = (Graphics2D) graphics.create();
            g.setComposite(AlphaComposite.Clear);
            g.fillRect(0, 0, SIZE, SIZE);
            g.dispose();
            g = (Graphics2D) graphics.create();
            Color[] colors = { new Color(0, 0, 0), new Color(0, 0, 0, 128), new Color(128, 128, 128), new Color(128, 128, 128, 128), new Color(255, 255, 255), new Color(255, 255, 255, 128) };
            for (int i = 0; i < colors.length; i++) {
                g.setColor(colors[i]);
                g.fillRect((SIZE * i) / colors.length, 0, (SIZE + colors.length - 1) / colors.length, SIZE);
            }
            g.setColor(Color.red);
            g.drawRect(0, 0, SIZE - 1, SIZE - 1);
            g.dispose();
            SwingUtilities.getWindowAncestor(this).toFront();
        }
    });
    f.pack();
    f.addMouseListener(handler);
    f.addMouseMotionListener(handler);
    f.setLocation(100, 100);
    f.setVisible(true);
    while (f.isVisible()) {
        Thread.sleep(1000);
    //f.repaint();
    }
}

Example 4 with Graphics

use of java.awt.Graphics in project jna by java-native-access.

the class WindowUtilsTest method xtestWindowTransparency.

// Expect failure on windows and x11, since transparent pixels are not 
// properly captured by java.awt.Robot
public void xtestWindowTransparency() throws Exception {
    if (GraphicsEnvironment.isHeadless())
        return;
    System.setProperty("sun.java2d.noddraw", "true");
    GraphicsConfiguration gconfig = WindowUtils.getAlphaCompatibleGraphicsConfiguration();
    Frame root = JOptionPane.getRootFrame();
    final Window background = new Window(root);
    background.setBackground(Color.white);
    background.setLocation(X, Y);
    final JWindow transparent = new JWindow(root, gconfig);
    transparent.setLocation(X, Y);
    ((JComponent) transparent.getContentPane()).setOpaque(false);
    transparent.getContentPane().add(new JComponent() {

        private static final long serialVersionUID = 1L;

        public Dimension getPreferredSize() {
            return new Dimension(W, H);
        }

        protected void paintComponent(Graphics g) {
            g = g.create();
            g.setColor(Color.red);
            g.fillRect(getWidth() / 4, getHeight() / 4, getWidth() / 2, getHeight() / 2);
            g.drawRect(0, 0, getWidth() - 1, getHeight() - 1);
            g.dispose();
        }
    });
    transparent.addMouseListener(handler);
    transparent.addMouseMotionListener(handler);
    SwingUtilities.invokeAndWait(new Runnable() {

        public void run() {
            background.pack();
            background.setSize(new Dimension(W, H));
            background.setVisible(true);
            transparent.pack();
            transparent.setSize(new Dimension(W, H));
            transparent.setVisible(true);
            transparent.toFront();
        }
    });
    WindowUtils.setWindowTransparent(transparent, true);
    //robot.delay(60000);
    Color sample = robot.getPixelColor(X + W / 2, Y + H / 2);
    assertEquals("Painted pixel should be opaque", Color.red, sample);
    sample = robot.getPixelColor(X + 10, Y + 10);
    assertEquals("Unpainted pixel should be transparent", Color.white, sample);
}

Example 5 with Graphics

use of java.awt.Graphics in project jfinal by jfinal.

the class CaptchaRender method drawGraphic.

private String drawGraphic(BufferedImage image) {
    // 获取图形上下文
    Graphics g = image.createGraphics();
    // 生成随机类
    Random random = new Random();
    // 设定背景色
    g.setColor(getRandColor(200, 250));
    g.fillRect(0, 0, WIDTH, HEIGHT);
    // 设定字体
    g.setFont(new Font("Times New Roman", Font.PLAIN, 18));
    // 随机产生155条干扰线，使图象中的认证码不易被其它程序探测到
    g.setColor(getRandColor(160, 200));
    for (int i = 0; i < 155; i++) {
        int x = random.nextInt(WIDTH);
        int y = random.nextInt(HEIGHT);
        int xl = random.nextInt(12);
        int yl = random.nextInt(12);
        g.drawLine(x, y, x + xl, y + yl);
    }
    // 取随机产生的认证码(4位数字)
    String sRand = "";
    for (int i = 0; i < 4; i++) {
        String rand = String.valueOf(strArr[random.nextInt(strArr.length)]);
        sRand += rand;
        // 将认证码显示到图象中
        g.setColor(new Color(20 + random.nextInt(110), 20 + random.nextInt(110), 20 + random.nextInt(110)));
        // 调用函数出来的颜色相同，可能是因为种子太接近，所以只能直接生成
        g.drawString(rand, 16 * i + 11, 19);
    }
    // 图象生效
    g.dispose();
    return sRand;
}