Examples with PaletteData org.eclipse.swt.graphics.PaletteData used on opensource projects

Example 31 with PaletteData

use of org.eclipse.swt.graphics.PaletteData in project yamcs-studio by yamcs.

the class SVGUtils method toSWT.

/**
 * Converts an AWT based buffered image into an SWT <code>Image</code>. This will always return an
 * <code>Image</code> that has 24 bit depth regardless of the type of AWT buffered image that is passed into the
 * method.
 *
 * @param awtImage
 *            the {@link java.awt.image.BufferedImage} to be converted to an <code>Image</code>
 * @return an <code>Image</code> that represents the same image data as the AWT <code>BufferedImage</code> type.
 */
public static ImageData toSWT(Device device, BufferedImage awtImage) {
    // We can force bit depth to be 24 bit because BufferedImage getRGB
    // allows us to always retrieve 24 bit data regardless of source color depth.
    PaletteData palette = new PaletteData(0xFF0000, 0xFF00, 0xFF);
    ImageData swtImageData = new ImageData(awtImage.getWidth(), awtImage.getHeight(), 24, palette);
    // Ensure scan size is aligned on 32 bit.
    int scansize = (((awtImage.getWidth() * 3) + 3) * 4) / 4;
    WritableRaster alphaRaster = awtImage.getAlphaRaster();
    byte[] alphaBytes = new byte[awtImage.getWidth()];
    for (int y = 0; y < awtImage.getHeight(); y++) {
        int[] buff = awtImage.getRGB(0, y, awtImage.getWidth(), 1, null, 0, scansize);
        swtImageData.setPixels(0, y, awtImage.getWidth(), buff, 0);
        if (alphaRaster != null) {
            int[] alpha = alphaRaster.getPixels(0, y, awtImage.getWidth(), 1, (int[]) null);
            for (int i = 0; i < awtImage.getWidth(); i++) {
                alphaBytes[i] = (byte) alpha[i];
            }
            swtImageData.setAlphas(0, y, awtImage.getWidth(), alphaBytes, 0);
        }
    }
    return swtImageData;
}

Example 32 with PaletteData

use of org.eclipse.swt.graphics.PaletteData in project eclipse.platform.swt by eclipse.

the class Test_org_eclipse_swt_graphics_GC method test_drawImageLorg_eclipse_swt_graphics_ImageII.

@Test
public void test_drawImageLorg_eclipse_swt_graphics_ImageII() {
    Color c1 = new Color(display, 255, 0, 0);
    Color c2 = new Color(display, 0, 0, 0);
    Color c3 = new Color(display, 255, 255, 0);
    PaletteData paletteData = new PaletteData(c1.getRGB(), c2.getRGB(), c3.getRGB());
    ImageData data = new ImageData(30, 30, 8, paletteData);
    for (int y = 0; y < data.height; y++) {
        for (int x = 0; x < data.width; x++) {
            if (x > y)
                data.setPixel(x, y, paletteData.getPixel(c1.getRGB()));
            else if (x < y)
                data.setPixel(x, y, paletteData.getPixel(c2.getRGB()));
            else
                data.setPixel(x, y, paletteData.getPixel(c3.getRGB()));
        }
    }
    Image image = new Image(display, data);
    data = image.getImageData();
    data.transparentPixel = paletteData.getPixel(c1.getRGB());
    Image imageTransparent = new Image(display, data);
    data.transparentPixel = -1;
    for (int y = 0; y < data.height; y++) {
        for (int x = 0; x < data.width; x++) {
            data.setAlpha(x, y, 127);
        }
    }
    Image imageAlpha = new Image(display, data);
    gc.drawImage(image, 100, 100);
    gc.drawImage(imageTransparent, 130, 100);
    gc.drawImage(imageAlpha, 160, 100);
    try {
        gc.drawImage(null, 100, 100);
        fail("No exception thrown");
    } catch (IllegalArgumentException e) {
    }
    image.dispose();
    imageTransparent.dispose();
    imageAlpha.dispose();
    c1.dispose();
    c2.dispose();
    c3.dispose();
}

Example 33 with PaletteData

use of org.eclipse.swt.graphics.PaletteData in project eclipse.platform.swt by eclipse.

the class Test_org_eclipse_swt_graphics_GC method test_copyAreaIIIIII.

@Test
public void test_copyAreaIIIIII() {
    Color white = display.getSystemColor(SWT.COLOR_WHITE);
    Color blue = display.getSystemColor(SWT.COLOR_BLUE);
    RGB whiteRGB = getRealRGB(white);
    RGB blueRGB = getRealRGB(blue);
    int width = 20;
    int height = 20;
    int destX = 10;
    int destY = 50;
    gc.setBackground(white);
    gc.fillRectangle(image.getBounds());
    gc.setBackground(blue);
    gc.fillRectangle(5, 0, 6, 1);
    gc.copyArea(0, 0, width, height, destX, destY);
    ImageData imageData = image.getImageData();
    PaletteData palette = imageData.palette;
    if (DPIUtil.getDeviceZoom() != 100) {
        // TODO Fix non integer scaling factors.
        if (SwtTestUtil.verbose) {
            System.out.println("Excluded test_copyAreaIIIIII(org.eclipse.swt.tests.junit.Test_org_eclipse_swt_graphics_GC)");
        }
        return;
    }
    int pixel = imageData.getPixel(destX + 4, destY);
    assertEquals(":a:", whiteRGB, palette.getRGB(pixel));
    pixel = imageData.getPixel(destX + 6, destY);
    assertEquals(":b:", blueRGB, palette.getRGB(pixel));
    pixel = imageData.getPixel(destX + 10, destY);
    assertEquals(":c:", blueRGB, palette.getRGB(pixel));
    pixel = imageData.getPixel(destX + 12, destY);
    assertEquals(":d:", whiteRGB, palette.getRGB(pixel));
}

Example 34 with PaletteData

use of org.eclipse.swt.graphics.PaletteData in project eclipse.platform.swt by eclipse.

the class Test_org_eclipse_swt_graphics_GC method getRealRGB.

/**
 * Return the actual RGB value used for rendering for the given Color.
 * This may be different from the Color's RGB value on lower-color displays
 * (16bpp or less).
 */
RGB getRealRGB(Color color) {
    Image colorImage = new Image(display, 10, 10);
    GC imageGc = new GC(colorImage);
    ImageData imageData;
    PaletteData palette;
    int pixel;
    imageGc.setBackground(color);
    imageGc.setForeground(color);
    imageGc.fillRectangle(0, 0, 10, 10);
    imageData = colorImage.getImageData();
    palette = imageData.palette;
    imageGc.dispose();
    colorImage.dispose();
    pixel = imageData.getPixel(0, 0);
    return palette.getRGB(pixel);
}

Example 35 with PaletteData

use of org.eclipse.swt.graphics.PaletteData in project eclipse.platform.swt by eclipse.

the class Test_org_eclipse_swt_graphics_Image method test_getImageDataCurrentZoom.

@SuppressWarnings("deprecation")
@Test
public void test_getImageDataCurrentZoom() {
    Rectangle bounds = new Rectangle(0, 0, 10, 20);
    Image image = new Image(display, bounds.width, bounds.height);
    image.dispose();
    try {
        image.getImageDataAtCurrentZoom();
        fail("No exception thrown for disposed image");
    } catch (SWTException e) {
        assertSWTProblem("Incorrect exception thrown for disposed image", SWT.ERROR_GRAPHIC_DISPOSED, e);
    }
    // creates bitmap image and compare size of imageData
    image = new Image(display, bounds.width, bounds.height);
    ImageData imageDataAtCurrentZoom = image.getImageDataAtCurrentZoom();
    image.dispose();
    Rectangle boundsAtCurrentZoom = new Rectangle(0, 0, imageDataAtCurrentZoom.width, imageDataAtCurrentZoom.height);
    assertEquals(":a: Size of ImageData returned from Image.getImageDataAtCurrentZoom method doesn't return matches with bounds in Pixel values.", boundsAtCurrentZoom, DPIUtil.autoScaleUp(bounds));
    // create icon image and compare size of imageData
    ImageData imageData = new ImageData(bounds.width, bounds.height, 1, new PaletteData(new RGB[] { new RGB(0, 0, 0) }));
    image = new Image(display, imageData);
    imageDataAtCurrentZoom = image.getImageDataAtCurrentZoom();
    image.dispose();
    boundsAtCurrentZoom = new Rectangle(0, 0, imageDataAtCurrentZoom.width, imageDataAtCurrentZoom.height);
    assertEquals(":b: Size of ImageData returned from Image.getImageDataAtCurrentZoom method doesn't return matches with bounds in Pixel values.", boundsAtCurrentZoom, DPIUtil.autoScaleUp(bounds));
    // create image with FileNameProvider
    image = new Image(display, imageFileNameProvider);
    imageDataAtCurrentZoom = image.getImageDataAtCurrentZoom();
    boundsAtCurrentZoom = new Rectangle(0, 0, imageDataAtCurrentZoom.width, imageDataAtCurrentZoom.height);
    bounds = image.getBounds();
    image.dispose();
    assertEquals(":c: Size of ImageData returned from Image.getImageDataAtCurrentZoom method doesn't return matches with bounds in Pixel values.", boundsAtCurrentZoom, DPIUtil.autoScaleUp(bounds));
    // create image with ImageDataProvider
    image = new Image(display, imageDataProvider);
    imageDataAtCurrentZoom = image.getImageDataAtCurrentZoom();
    boundsAtCurrentZoom = new Rectangle(0, 0, imageDataAtCurrentZoom.width, imageDataAtCurrentZoom.height);
    bounds = image.getBounds();
    image.dispose();
    assertEquals(":d: Size of ImageData returned from Image.getImageDataAtCurrentZoom method doesn't return matches with bounds in Pixel values.", boundsAtCurrentZoom, DPIUtil.autoScaleUp(bounds));
}