Java Code Examples for org.eclipse.draw2d.Graphics#getAbsoluteScale()

public static Pattern createScaledPattern(Graphics graphics, Device device,
		float x1, float y1, float x2, float y2, Color color1, int alpha1,
		Color color2, int alpha2) {
	double scale = graphics.getAbsoluteScale();
	return new Pattern(device, (float) (x1 * scale), (float) (y1 * scale),
			(float) (x2 * scale), (float) (y2 * scale), color1, alpha1, color2,
			alpha2);
}
 

public static Pattern createScaledPattern(Graphics graphics, Device device,
		float x1, float y1, float x2, float y2, Color color1, Color color2) {
	double scale = graphics.getAbsoluteScale();
	return new Pattern(device, (float) (x1 * scale), (float) (y1 * scale),
			(float) (x2 * scale), (float) (y2 * scale), color1, color2);
}
 

/**
 * Fix the issues in the ImageUtilities where the size of the image is the
 * ascent of the font instead of being its height.
 * 
 * Also uses the GC for the rotation.
 * 
 * The biggest issue is the very idea of using an image. The size of the
 * font should be given by the mapmode, not in absolute device pixel as it
 * does look ugly when zooming in.
 * 
 * 
 * @param string
 *            the String to be rendered
 * @param font
 *            the font
 * @param foreground
 *            the text's color
 * @param background
 *            the background color
 * @param useGCTransform
 *            true to use the Transform on the GC object.
 *            false to rely on the homemade algorithm. Transform seems to
 *            not be supported in eclipse-3.2 except on windows.
 *            It is working on macos-3.3M3.
 * @return an Image which must be disposed
 */
public Image createRotatedImageOfString(Graphics g, String string,
        Font font, Color foreground, Color background,
        boolean useGCTransform) {
    Display display = Display.getCurrent();
    if (display == null) {
        SWT.error(SWT.ERROR_THREAD_INVALID_ACCESS);
    }

    List<FontData> fontDatas = new ArrayList<FontData>();
    // take all font datas, mac and linux specific
    for (FontData data : font.getFontData()) {
        FontData data2 = new FontData(data.getName(),
                (int) (data.getHeight() * g.getAbsoluteScale()), data.getStyle());
        fontDatas.add(data2);
    }
    // create the new font
    Font zoomedFont = new Font(display, fontDatas.toArray(new FontData[fontDatas.size()]));
    // get the dimension in this font
    Dimension strDim = FigureUtilities
            .getTextExtents(string, zoomedFont);
    if (strDim.width == 0 || strDim.height == 0) {
        strDim = FigureUtilities
                .getTextExtents(string, font);
    }
    Image srcImage = useGCTransform ?
            new Image(display, strDim.height, strDim.width) :
            new Image(display, strDim.width, strDim.height);
    GC gc = new GC(srcImage);
    if (useGCTransform) {
        Transform transform = new Transform(display);
        transform.rotate(-90);

        gc.setTransform(transform);
    }
    gc.setFont(zoomedFont);
    gc.setForeground(foreground);
    gc.setBackground(background);
    gc.fillRectangle(gc.getClipping());
    gc.drawText(string, gc.getClipping().x, gc.getClipping().y
            // - metrics.getLeading()
            );
    gc.dispose();
    if (useGCTransform) {
        srcImage.dispose();
        zoomedFont.dispose();
        return srcImage;
    }
    disposeImage();
    Image rotated = ImageUtilities.createRotatedImage(srcImage);
    srcImage.dispose();
    zoomedFont.dispose();
    return rotated;
}