Examples of java.awt.Canvas

java.awt.Canvas

     * @return the image
     */
    public java.awt.Image createAwtImage(java.awt.Color foreground, java.awt.Color background) {
        int f = foreground.getRGB();
        int g = background.getRGB();
        Canvas canvas = new Canvas();


        paintCode();
        int h = (int)yHeight;
        int pix[] = new int[bitColumns * codeRows * h];
        int stride = (bitColumns + 7) / 8;
        int ptr = 0;
        for (int k = 0; k < codeRows; ++k) {
            int p = k * stride;
            for (int j = 0; j < bitColumns; ++j) {
                int b = outBits[p + j / 8] & 0xff;
                b <<= j % 8;
                pix[ptr++] = (b & 0x80) == 0 ? g : f;
            }
            for (int j = 1; j < h; ++j) {
                System.arraycopy(pix, ptr - bitColumns, pix, ptr + bitColumns * (j - 1), bitColumns);
            }
            ptr += bitColumns * (h - 1);
        }


        java.awt.Image img = canvas.createImage(new MemoryImageSource(bitColumns, codeRows * h, pix, 0, bitColumns));
        return img;
    }

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     * @return the image
     */
    public java.awt.Image createAwtImage(java.awt.Color foreground, java.awt.Color background) {
        int f = foreground.getRGB();
        int g = background.getRGB();
        Canvas canvas = new Canvas();


        int width = bm.getWidth();
        int height = bm.getHeight();
        int pix[] = new int[width * height];
        byte[][] mt = bm.getArray();
        for (int y = 0; y < height; ++y) {
            byte[] line = mt[y];
            for (int x = 0; x < width; ++x) {
                pix[y * width + x] = line[x] == 0 ? f : g;
            }
        }


        java.awt.Image img = canvas.createImage(new MemoryImageSource(width, height, pix, 0, width));
        return img;
    }

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     * @return the image
     */    
    public java.awt.Image createAwtImage(java.awt.Color foreground, java.awt.Color background) {
        int f = foreground.getRGB();
        int g = background.getRGB();
        Canvas canvas = new Canvas();


        String bCode = keepNumbers(code);
        if (generateChecksum)
            bCode += getChecksum(bCode);
        int len = bCode.length();
        int nn = (int)n;
        int fullWidth = len * (3 + 2 * nn) + (6 + nn );
        byte bars[] = getBarsInter25(bCode);
        boolean print = true;
        int ptr = 0;
        int height = (int)barHeight;
        int pix[] = new int[fullWidth * height];
        for (int k = 0; k < bars.length; ++k) {
            int w = (bars[k] == 0 ? 1 : nn);
            int c = g;
            if (print)
                c = f;
            print = !print;
            for (int j = 0; j < w; ++j)
                pix[ptr++] = c;
        }
        for (int k = fullWidth; k < pix.length; k += fullWidth) {
            System.arraycopy(pix, 0, pix, k, fullWidth); 
        }
        Image img = canvas.createImage(new MemoryImageSource(fullWidth, height, pix, 0, fullWidth));
        
        return img;
    }

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    public java.awt.Image createAwtImage(java.awt.Color foreground, java.awt.Color background) {
        if (image == null)
            return null;
        int f = foreground.getRGB();
        int g = background.getRGB();
        Canvas canvas = new Canvas();


        int w = width + 2 * ws;
        int h = height + 2 * ws;
        int pix[] = new int[w * h];
        int stride = (w + 7) / 8;
        int ptr = 0;
        for (int k = 0; k < h; ++k) {
            int p = k * stride;
            for (int j = 0; j < w; ++j) {
                int b = image[p + j / 8] & 0xff;
                b <<= j % 8;
                pix[ptr++] = (b & 0x80) == 0 ? g : f;
            }
        }
        java.awt.Image img = canvas.createImage(new MemoryImageSource(w, h, pix, 0, w));
        return img;
    }

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    public BasicSplitPaneDivider getDivider() {
        return divider;
    }


    protected Component createDefaultNonContinuousLayoutDivider() {
        return new Canvas() {
            public void paint(final Graphics g) {
                Color oldColor = g.getColor();
                g.setColor(Color.DARK_GRAY);


                int x;

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        divider.setDividerSize(splitPane.getDividerSize());
        return divider;
    }


    protected Component createDefaultNonContinuousLayoutDivider() {
        return new Canvas() {
            public void paint(Graphics g) {
                paintDragDivider(g, 0, 0, getWidth(), getHeight());
            }
        };
    }

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    setName( windowName );
    setIgnoreRepaint( true );
    setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
    
    mCanvas = new Canvas();
    mCanvas.setIgnoreRepaint( true );
    mCanvas.setSize( mWindowSize.getWidth(), mWindowSize.getHeight() );
    
    add( mCanvas );
    pack();

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        panel1.setName(name3);
        JPanel panel2 = new JPanel();
        panel2.setName(name4);
        JPanel panel3 = new JPanel();
        panel3.setName(name5);
        Component component1 = new Canvas();//new Button();
        component1.setName(name6);
        Component component2 = new JPanel();
        Component component3 = new JPanel();
        JPanel panel4 = new JPanel();
        assertNull(SwingUtilities.getAncestorNamed(name1, null));
        assertNull(SwingUtilities.getAncestorNamed(null, component3));

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    public void testGetAncestorOfClass() {
        Window window = new Window(new Frame());
        JPanel panel1 = new JPanel();
        JPanel panel2 = new JPanel();
        JPanel panel3 = new JPanel();
        Component component1 = new Canvas();
        Component component2 = new Panel();
        Component component3 = new Panel();
        assertNull(SwingUtilities.getAncestorOfClass(JPanel.class, null));
        assertNull(SwingUtilities.getAncestorOfClass(null, component3));
        assertNull(SwingUtilities.getAncestorOfClass(null, null));

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     * @return the image
     */    
    public java.awt.Image createAwtImage(java.awt.Color foreground, java.awt.Color background) {
        int f = foreground.getRGB();
        int g = background.getRGB();
        Canvas canvas = new Canvas();


        String bCode = code;
        if (extended)
            bCode = getCode39Ex(code);
        if (generateChecksum)
            bCode += getChecksum(bCode);
        int len = bCode.length() + 2;
        int nn = (int)n;
        int fullWidth = len * (6 + 3 * nn) + (len - 1);
        byte bars[] = getBarsCode39(bCode);
        boolean print = true;
        int ptr = 0;
        int height = (int)barHeight;
        int pix[] = new int[fullWidth * height];
        for (int k = 0; k < bars.length; ++k) {
            int w = (bars[k] == 0 ? 1 : nn);
            int c = g;
            if (print)
                c = f;
            print = !print;
            for (int j = 0; j < w; ++j)
                pix[ptr++] = c;
        }
        for (int k = fullWidth; k < pix.length; k += fullWidth) {
            System.arraycopy(pix, 0, pix, k, fullWidth); 
        }
        Image img = canvas.createImage(new MemoryImageSource(fullWidth, height, pix, 0, fullWidth));
        
        return img;
    }

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