Rescaling image in J2ME - image

Question

I'm resizing a bird image using the following code:
private Image resizeImage(Image src) {
int srcWidth = src.getWidth();
int srcHeight = src.getHeight();
int screenWidth=getWidth()/3;
int screenHeight=getHeight()/3;
Image tmp = Image.createImage(screenWidth, srcHeight);
Graphics g = tmp.getGraphics();
int ratio = (srcWidth << 16) / screenWidth;
int pos = ratio/2;
//Horizontal Resize
for (int x = 0; x < screenWidth; x++) {
g.setClip(x, 0, 1, srcHeight);
g.drawImage(src, x - (pos >> 16), 0, Graphics.LEFT | Graphics.TOP);
pos += ratio;
}
Image resizedImage = Image.createImage(screenWidth, screenHeight);
g = resizedImage.getGraphics();
ratio = (srcHeight << 16) / screenHeight;
pos = ratio/2;
//Vertical resize
for (int y = 0; y < screenHeight; y++) {
g.setClip(0, y, screenWidth, 1);
g.drawImage(tmp, 0, y - (pos >> 16), Graphics.LEFT | Graphics.TOP);
pos += ratio;
}
return resizedImage;
}
The image is resized but it has white background along with it as shown. How to get only resized image with transparent background..?

Answer 1

Here is an Image scaling function I've been using. Includes transparency. Found here: http://willperone.net/Code/codescaling.php
public Image scale(Image original, int newWidth, int newHeight) {
int[] rawInput = new int[original.getHeight() * original.getWidth()];
original.getRGB(rawInput, 0, original.getWidth(), 0, 0, original.getWidth(), original.getHeight());
int[] rawOutput = new int[newWidth * newHeight];
// YD compensates for the x loop by subtracting the width back out
int YD = (original.getHeight() / newHeight) * original.getWidth() - original.getWidth();
int YR = original.getHeight() % newHeight;
int XD = original.getWidth() / newWidth;
int XR = original.getWidth() % newWidth;
int outOffset = 0;
int inOffset = 0;
for (int y = newHeight, YE = 0; y > 0; y--) {
for (int x = newWidth, XE = 0; x > 0; x--) {
rawOutput[outOffset++] = rawInput[inOffset];
inOffset += XD;
XE += XR;
if (XE >= newWidth) {
XE -= newWidth;
inOffset++;
}
}
inOffset += YD;
YE += YR;
if (YE >= newHeight) {
YE -= newHeight;
inOffset += original.getWidth();
}
}
rawInput = null;
return Image.createRGBImage(rawOutput, newWidth, newHeight, true);
}