Java Bitmap.getWidth方法代码示例

import net.rim.device.api.system.Bitmap; //导入方法依赖的package包/类
/**
 * @inheritDoc
 */
public Object scale(Object nativeImage, int width, int height) {
    Bitmap image = (Bitmap) nativeImage;
    int srcWidth = image.getWidth();
    int srcHeight = image.getHeight();

    // no need to scale
    if (srcWidth == width && srcHeight == height) {
        return image;
    }

    int[] currentArray = new int[srcWidth];
    int[] destinationArray = new int[width * height];
    scaleArray(image, srcWidth, srcHeight, height, width, currentArray, destinationArray);

    return createImage(destinationArray, width, height);
}
 

import net.rim.device.api.system.Bitmap; //导入方法依赖的package包/类
/**
 * Construct luminance source for specified Bitmap 
 * @param bitmap
 */
public BitmapLuminanceSource(Bitmap bitmap) {
	super(bitmap.getWidth(), bitmap.getHeight());
	int width = bitmap.getWidth();
	int height = bitmap.getHeight();
	_bitmap = bitmap;

	int area = width * height;
	_matrix = new byte[area];
	int[] rgb = new int[area];

	_bitmap.getARGB(rgb, 0, width, 0, 0, width, height);

	for (int y = 0; y < height; y++) {
		int offset = y * width;
		for (int x = 0; x < width; x++) {
			int pixel = rgb[offset + x];
			int luminance = (306 * ((pixel >> 16) & 0xFF) + 601
					* ((pixel >> 8) & 0xFF) + 117 * (pixel & 0xFF)) >> 10;
			_matrix[offset + x] = (byte) luminance;
		}
	}

	rgb = null;

}
 

import net.rim.device.api.system.Bitmap; //导入方法依赖的package包/类
public AbstractBitmapField(Bitmap bmp, XYDimension size, boolean scale,
                           boolean roundAngles) {
    int newHeight = size.height, newWidth = size.width;
    Bitmap newBmp;

    if (bmp.getWidth() > newWidth || bmp.getHeight() > newHeight || scale) {
        newBmp = GPATools.ResizeTransparentBitmap(bmp, newWidth, newHeight,
                Bitmap.FILTER_LANCZOS, Bitmap.SCALE_TO_FIT);
    } else {
        newBmp = bmp;
    }

    this.height = newHeight;
    this.width = newWidth;

    if (roundAngles) {
        RoundAngles.roundAngles(newBmp, 3);
    }

    this.bmp = newBmp;
}
 

import net.rim.device.api.system.Bitmap; //导入方法依赖的package包/类
/**
 * Creates a bitmap that is a copy of a portion of an existing bitmap.
 *
 * @param src    the source bitmap
 * @param x      the x offset
 * @param y      the y offset
 * @param width  the width to copy
 * @param height the height to copy
 * @return a new Bitmap that is a copy of the specified portion of the specified bitmap
 */
private Bitmap copyBitmapSection(Bitmap src, int x, int y, int width, int height) {
  if (x < 0 || y < 0 || x + width > src.getWidth() || y + height > src.getHeight()) {
    throw new IllegalArgumentException(
        "must not specify a rectangle that falls outside of the source bitmap");
  }

  Bitmap dst = new Bitmap(width, height);

  int[] raw = new int[width * height];
  src.getARGB(raw, 0, width, x, y, width, height);
  dst.setARGB(raw, 0, width, 0, 0, width, height);

  return dst;
}
 

import net.rim.device.api.system.Bitmap; //导入方法依赖的package包/类
/**
 * Utility to convert a RIM API Bitmap into a J2ME LCDUI Image. This assists
 * in using this library within a MIDP application, where the
 * drawTexturedPath method is not available.
 * 
 * @param bitmap
 *            the source Bitmap
 * @return the Image object based on the Bitmap data
 * @since 1.2
 */
public static Image convert(Bitmap bitmap) {
	int[] data = new int[bitmap.getWidth() * bitmap.getHeight()];
	bitmap.getARGB(data, 0, bitmap.getWidth(), 0, 0, bitmap.getWidth(), bitmap.getHeight());
	return Image.createRGBImage(data, bitmap.getWidth(), bitmap.getHeight(), true);
}