swtgraphics2d.java

java图形利器

        // TODO Auto-generated method stub
        return null;
    }

    /* (non-Javadoc)
     * @see java.awt.Graphics#getColor()
     */
    public Color getColor() {
        return SWTUtils.toAwtColor(gc.getForeground());
    }

    /* (non-Javadoc)
     * @see java.awt.Graphics#setColor(java.awt.Color)
     */
    public void setColor(Color color) {
    	org.eclipse.swt.graphics.Color swtColor = getSwtColorFromPool(color);
        gc.setForeground(swtColor);
    }

    /* (non-Javadoc)
     * @see java.awt.Graphics#setPaintMode()
     */
    public void setPaintMode() {
        // TODO Auto-generated method stub
    }

    /* (non-Javadoc)
     * @see java.awt.Graphics#setXORMode(java.awt.Color)
     */
    public void setXORMode(Color color) {
        // TODO Auto-generated method stub

    }

    /**
     * Returns the font in form of an awt font created 
     * with the parameters of the font of the swt graphic 
     * composite.
     * @see java.awt.Graphics#getFont()
     */
    public Font getFont() {
        // retrieve the swt font description in an os indept way
        FontData[] fontData = gc.getFont().getFontData();
        // create a new awt font with the appropiate data
        return SWTUtils.toAwtFont(gc.getDevice(), fontData[0], true);
    }

    /**
     * Set the font swt graphic composite from the specified 
     * awt font. Be careful that the newly created swt font 
     * must be disposed separately.
     * @see java.awt.Graphics#setFont(java.awt.Font)
     */
    public void setFont(Font font) {
        org.eclipse.swt.graphics.Font swtFont = getSwtFontFromPool(font);
        gc.setFont(swtFont);
    }

    /* (non-Javadoc)
     * @see java.awt.Graphics#getFontMetrics(java.awt.Font)
     */
    public FontMetrics getFontMetrics(Font font) {
        return SWTUtils.DUMMY_PANEL.getFontMetrics(font);
    }

    /* (non-Javadoc)
     * @see java.awt.Graphics#getClipBounds()
     */
    public Rectangle getClipBounds() {
        org.eclipse.swt.graphics.Rectangle clip = gc.getClipping();
        return new Rectangle(clip.x, clip.y, clip.width, clip.height);
    }

    /* (non-Javadoc)
     * @see java.awt.Graphics#clipRect(int, int, int, int)
     */
    public void clipRect(int x, int y, int width, int height) {
        org.eclipse.swt.graphics.Rectangle clip = gc.getClipping();
        clip.intersects(x, y, width, height);
        gc.setClipping(clip);
    }

    /* (non-Javadoc)
     * @see java.awt.Graphics#setClip(int, int, int, int)
     */
    public void setClip(int x, int y, int width, int height) {
        gc.setClipping(x, y, width, height);
    }

    /* (non-Javadoc)
     * @see java.awt.Graphics#getClip()
     */
    public Shape getClip() {
        // TODO Auto-generated method stub
        return null;
    }

    /* (non-Javadoc)
     * @see java.awt.Graphics#setClip(java.awt.Shape)
     */
    public void setClip(Shape clip) {
        if (clip == null) 
            return;
        Path clipPath = toSwtPath(clip);
        gc.setClipping(clipPath);
        clipPath.dispose();
    }

    /* (non-Javadoc)
     * @see java.awt.Graphics#copyArea(int, int, int, int, int, int)
     */
    public void copyArea(int x, int y, int width, int height, int dx, int dy) {
        // TODO Auto-generated method stub

    }

    /**
     * Draws a line on the swt graphic composite.
     * @see java.awt.Graphics#drawLine(int, int, int, int)
     */
    public void drawLine(int x1, int y1, int x2, int y2) {
        gc.drawLine(x1, y1, x2, y2);
    }

    /**
     * Fill a rectangle area on the swt graphic composite.
     * The <code>fillRectangle</code> method of the <code>GC</code> 
     * class uses the background color so we must switch colors.
     * @see java.awt.Graphics#fillRect(int, int, int, int)
     */
    public void fillRect(int x, int y, int width, int height) {
        this.switchColors();
        gc.fillRectangle(x, y, width, height);
        this.switchColors();
    }

    /* (non-Javadoc)
     * @see java.awt.Graphics#clearRect(int, int, int, int)
     */
    public void clearRect(int x, int y, int width, int height) {
        // TODO Auto-generated method stub

    }

    /* (non-Javadoc)
     * @see java.awt.Graphics#drawRoundRect(int, int, int, int, int, int)
     */
    public void drawRoundRect(int x, int y, int width, int height,
            int arcWidth, int arcHeight) {
        // TODO Auto-generated method stub

    }

    /* (non-Javadoc)
     * @see java.awt.Graphics#fillRoundRect(int, int, int, int, int, int)
     */
    public void fillRoundRect(int x, int y, int width, int height,
            int arcWidth, int arcHeight) {
        // TODO Auto-generated method stub

    }

    /* (non-Javadoc)
     * @see java.awt.Graphics#drawOval(int, int, int, int)
     */
    public void drawOval(int x, int y, int width, int height) {
        // TODO Auto-generated method stub

    }

    /* (non-Javadoc)
     * @see java.awt.Graphics#fillOval(int, int, int, int)
     */
    public void fillOval(int x, int y, int width, int height) {
        // TODO Auto-generated method stub

    }

    /* (non-Javadoc)
     * @see java.awt.Graphics#drawArc(int, int, int, int, int, int)
     */
    public void drawArc(int x, int y, int width, int height, int arcStart,
            int arcAngle) {
        // TODO Auto-generated method stub

    }

    /* (non-Javadoc)
     * @see java.awt.Graphics#fillArc(int, int, int, int, int, int)
     */
    public void fillArc(int x, int y, int width, int height, int arcStart,
            int arcAngle) {
        // TODO Auto-generated method stub

    }

    /* (non-Javadoc)
     * @see java.awt.Graphics#drawPolyline(int[], int[], int)
     */
    public void drawPolyline(int [] xPoints, int [] yPoints, int npoints) {
        // TODO Auto-generated method stub

    }

    /* (non-Javadoc)
     * @see java.awt.Graphics#drawPolygon(int[], int[], int)
     */
    public void drawPolygon(int [] xPoints, int [] yPoints, int npoints) {
        // TODO Auto-generated method stub

    }

    /* (non-Javadoc)
     * @see java.awt.Graphics#fillPolygon(int[], int[], int)
     */
    public void fillPolygon(int [] xPoints, int [] yPoints, int npoints) {
        // TODO Auto-generated method stub

    }

    /* (non-Javadoc)
     * @see java.awt.Graphics#drawImage(java.awt.Image, int, int, 
     * java.awt.image.ImageObserver)
     */
    public boolean drawImage(Image image, int x, int y, 
            ImageObserver observer) {
        // TODO Auto-generated method stub
        return false;
    }

    /* (non-Javadoc)
     * @see java.awt.Graphics#drawImage(java.awt.Image, int, int, int, int, 
     * java.awt.image.ImageObserver)
     */
    public boolean drawImage(Image image, int x, int y, int width, int height,
            ImageObserver observer) {
        // TODO Auto-generated method stub
        return false;
    }

    /* (non-Javadoc)
     * @see java.awt.Graphics#drawImage(java.awt.Image, int, int, 
     * java.awt.Color, java.awt.image.ImageObserver)
     */
    public boolean drawImage(Image image, int x, int y, Color bgcolor,
            ImageObserver observer) {
        // TODO Auto-generated method stub
        return false;
    }

    /* (non-Javadoc)
     * @see java.awt.Graphics#drawImage(java.awt.Image, int, int, int, int, 
     * java.awt.Color, java.awt.image.ImageObserver)
     */
    public boolean drawImage(Image image, int x, int y, int width, int height,
            Color bgcolor, ImageObserver observer) {
        // TODO Auto-generated method stub
        return false;
    }

    /* (non-Javadoc)
     * @see java.awt.Graphics#drawImage(java.awt.Image, int, int, int, int, 
     * int, int, int, int, java.awt.image.ImageObserver)
     */
    public boolean drawImage(Image image, int dx1, int dy1, int dx2, int dy2,
            int sx1, int sy1, int sx2, int sy2, ImageObserver observer) {
        // TODO Auto-generated method stub
        return false;
    }

    /* (non-Javadoc)
     * @see java.awt.Graphics#drawImage(java.awt.Image, int, int, int, int, 
     * int, int, int, int, java.awt.Color, java.awt.image.ImageObserver)
     */
    public boolean drawImage(Image image, int dx1, int dy1, int dx2, int dy2,
            int sx1, int sy1, int sx2, int sy2, Color bgcolor,
            ImageObserver observer) {
        // TODO Auto-generated method stub
        return false;
    }

    /* (non-Javadoc)
     * @see java.awt.Graphics#dispose()
     */
    public void dispose() {
    	// we dispose resources we own but user must dispose gc
        disposeResourcePool();
    }

    static ImageData convertToSWT(BufferedImage bufferedImage) {
        if (bufferedImage.getColorModel() instanceof DirectColorModel) {
            DirectColorModel colorModel 
                    = (DirectColorModel) bufferedImage.getColorModel();
            PaletteData palette = new PaletteData(colorModel.getRedMask(),
                    colorModel.getGreenMask(), colorModel.getBlueMask());
            ImageData data = new ImageData(bufferedImage.getWidth(), 
                    bufferedImage.getHeight(), colorModel.getPixelSize(),
                    palette);
            WritableRaster raster = bufferedImage.getRaster();
            int[] pixelArray = new int[3];
            for (int y = 0; y < data.height; y++) {
                for (int x = 0; x < data.width; x++) {
                  raster.getPixel(x, y, pixelArray);
                  int pixel = palette.getPixel(new RGB(pixelArray[0], 
                          pixelArray[1], pixelArray[2]));
                  data.setPixel(x, y, pixel);
                }
            }
            return data;
        } 
        else if (bufferedImage.getColorModel() instanceof IndexColorModel) {
            IndexColorModel colorModel 
                    = (IndexColorModel) bufferedImage.getColorModel();
            int size = colorModel.getMapSize();
            byte[] reds = new byte[size];
            byte[] greens = new byte[size];
            byte[] blues = new byte[size];
            colorModel.getReds(reds);
            colorModel.getGreens(greens);
            colorModel.getBlues(blues);
            RGB[] rgbs = new RGB[size];
            for (int i = 0; i < rgbs.length; i++) {
                rgbs[i] = new RGB(reds[i] & 0xFF, greens[i] & 0xFF, 
                        blues[i] & 0xFF);
            }
            PaletteData palette = new PaletteData(rgbs);
            ImageData data = new ImageData(bufferedImage.getWidth(),
                    bufferedImage.getHeight(), colorModel.getPixelSize(),
                    palette);
            data.transparentPixel = colorModel.getTransparentPixel();
            WritableRaster raster = bufferedImage.getRaster();
            int[] pixelArray = new int[1];
            for (int y = 0; y < data.height; y++) {
                for (int x = 0; x < data.width; x++) {
                    raster.getPixel(x, y, pixelArray);
                    data.setPixel(x, y, pixelArray[0]);
                }
            }
            return data;
        }
        return null;
    }
}