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

Example 16 with Graphics

use of java.awt.Graphics in project jdk8u_jdk by JetBrains.

the class ValidWbmpTest method main.

public static void main(String[] args) {
    try {
        String[] formats = { "JPEG", "PNG", "BMP" };
        BufferedImage img = new BufferedImage(100, 100, BufferedImage.TYPE_BYTE_GRAY);
        Graphics g = img.createGraphics();
        g.setColor(Color.white);
        g.fillRect(0, 0, 100, 100);
        g.setColor(Color.black);
        g.fillRect(10, 10, 80, 80);
        ImageReader ir = (ImageReader) ImageIO.getImageReadersByFormatName("WBMP").next();
        if (ir == null) {
            throw new RuntimeException("No readers for WBMP format!");
        }
        for (int i = 0; i < formats.length; i++) {
            System.out.println("Test " + formats[i] + " stream...");
            boolean passed = false;
            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            ImageIO.write(img, formats[i], baos);
            baos.close();
            ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
            ImageInputStream iis = null;
            iis = ImageIO.createImageInputStream(bais);
            ir.setInput(iis);
            try {
                BufferedImage res = ir.read(0);
            } catch (IIOException e) {
                StackTraceElement[] stack = e.getStackTrace();
                if (ir.getClass().getName().equals(stack[0].getClassName()) && "readHeader".equals(stack[0].getMethodName())) {
                    passed = true;
                }
            } catch (Throwable t) {
                t.printStackTrace();
            }
            if (!passed) {
                throw new RuntimeException("Test failed!");
            }
        }
    } catch (Exception e) {
        e.printStackTrace();
        throw new RuntimeException("Unexpected exception. Test failed.");
    }
}

Example 17 with Graphics

use of java.awt.Graphics in project jdk8u_jdk by JetBrains.

the class bug8057791 method main.

public static void main(String[] args) {
    try {
        UIManager.setLookAndFeel(new NimbusLookAndFeel());
        SwingUtilities.invokeAndWait(new Runnable() {

            @Override
            public void run() {
                final int listWidth = 50;
                final int listHeight = 50;
                final int selCellIndex = 0;
                JList<String> list = new JList<String>();
                list.setSize(listWidth, listHeight);
                DefaultListModel<String> listModel = new DefaultListModel<String>();
                listModel.add(selCellIndex, "E");
                list.setModel(listModel);
                list.setSelectedIndex(selCellIndex);
                BufferedImage img = new BufferedImage(listWidth, listHeight, BufferedImage.TYPE_INT_ARGB);
                Graphics g = img.getGraphics();
                list.paint(g);
                g.dispose();
                Rectangle cellRect = list.getCellBounds(selCellIndex, selCellIndex);
                HashSet<Color> cellColors = new HashSet<Color>();
                int uniqueColorIndex = 0;
                for (int x = cellRect.x; x < (cellRect.x + cellRect.width); x++) {
                    for (int y = cellRect.y; y < (cellRect.y + cellRect.height); y++) {
                        Color cellColor = new Color(img.getRGB(x, y), true);
                        if (cellColors.add(cellColor)) {
                            System.err.println(String.format("Cell color #%d: %s", uniqueColorIndex++, cellColor));
                        }
                    }
                }
                Color selForegroundColor = list.getSelectionForeground();
                Color selBackgroundColor = list.getSelectionBackground();
                if (!cellColors.contains(new Color(selForegroundColor.getRGB(), true))) {
                    throw new RuntimeException(String.format("Selected cell is drawn without selection foreground color '%s'.", selForegroundColor));
                }
                if (!cellColors.contains(new Color(selBackgroundColor.getRGB(), true))) {
                    throw new RuntimeException(String.format("Selected cell is drawn without selection background color '%s'.", selBackgroundColor));
                }
            }
        });
    } catch (UnsupportedLookAndFeelException | InterruptedException | InvocationTargetException e) {
        throw new RuntimeException(e);
    }
}

Example 18 with Graphics

use of java.awt.Graphics in project jdk8u_jdk by JetBrains.

the class bug7181438 method createBufferedImage.

private static BufferedImage createBufferedImage() {
    final BufferedImage bi = new BufferedImage(SIZE, SIZE, BufferedImage.TYPE_INT_RGB);
    final Graphics bg = bi.getGraphics();
    //Black color and alpha = 0
    bg.setColor(new Color(0, 0, 0, 0));
    bg.fillRect(0, 0, SIZE, SIZE);
    bg.dispose();
    return bi;
}

Example 19 with Graphics

use of java.awt.Graphics in project jdk8u_jdk by JetBrains.

the class HiDPIRobotScreenCaptureTest method main.

public static void main(String[] args) throws Exception {
    try {
        UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
    } catch (Exception e) {
        return;
    }
    Frame frame = new Frame();
    frame.setBounds(40, 30, 400, 300);
    frame.setUndecorated(true);
    Panel panel = new Panel(new BorderLayout());
    Canvas canvas = new Canvas() {

        @Override
        public void paint(Graphics g) {
            super.paint(g);
            int w = getWidth();
            int h = getHeight();
            g.setColor(COLORS[0]);
            g.fillRect(0, 0, w / 2, h / 2);
            g.setColor(COLORS[1]);
            g.fillRect(w / 2, 0, w / 2, h / 2);
            g.setColor(COLORS[2]);
            g.fillRect(0, h / 2, w / 2, h / 2);
            g.setColor(COLORS[3]);
            g.fillRect(w / 2, h / 2, w / 2, h / 2);
        }
    };
    panel.add(canvas);
    frame.add(panel);
    frame.setVisible(true);
    Robot robot = new Robot();
    robot.waitForIdle();
    Thread.sleep(200);
    Rectangle rect = canvas.getBounds();
    rect.setLocation(canvas.getLocationOnScreen());
    BufferedImage image = robot.createScreenCapture(rect);
    frame.dispose();
    int w = image.getWidth();
    int h = image.getHeight();
    if (w != frame.getWidth() || h != frame.getHeight()) {
        throw new RuntimeException("Wrong image size!");
    }
    if (image.getRGB(w / 4, h / 4) != COLORS[0].getRGB()) {
        throw new RuntimeException("Wrong image color!");
    }
    if (image.getRGB(3 * w / 4, h / 4) != COLORS[1].getRGB()) {
        throw new RuntimeException("Wrong image color!");
    }
    if (image.getRGB(w / 4, 3 * h / 4) != COLORS[2].getRGB()) {
        throw new RuntimeException("Wrong image color!");
    }
    if (image.getRGB(3 * w / 4, 3 * h / 4) != COLORS[3].getRGB()) {
        throw new RuntimeException("Wrong image color!");
    }
}

Example 20 with Graphics

use of java.awt.Graphics in project jdk8u_jdk by JetBrains.

the class MultiResolutionSplashTest method getScaleFactor.

static float getScaleFactor() {
    final Dialog dialog = new Dialog((Window) null);
    dialog.setSize(100, 100);
    dialog.setModal(true);
    final float[] scaleFactors = new float[1];
    Panel panel = new Panel() {

        @Override
        public void paint(Graphics g) {
            float scaleFactor = 1;
            if (g instanceof SunGraphics2D) {
                scaleFactor = ((SunGraphics2D) g).surfaceData.getDefaultScale();
            }
            scaleFactors[0] = scaleFactor;
            dialog.setVisible(false);
        }
    };
    dialog.add(panel);
    dialog.setVisible(true);
    dialog.dispose();
    return scaleFactors[0];
}