javaMe图片缩放
class ScanlImageTest
{
public static Image scaleImage(Image src, int dstW, int dstH)
{
int srcW = src.getWidth();
int srcH = src.getHeight();
Image tmp = Image.createImage(dstW, srcH);
Graphics g = tmp.getGraphics();
int delta =(srcW << 16)/dstW;
int pos = delta / 2;
for (int x=0;x<dstW;x++)
{
g.setClip(x,0,1,srcH);
g.drawImage(src,x-(pos >> 16),0,Graphics.LEFT | Graphics.TOP);
pos+=delta;
}
Image dst = Image.createImage(dstW, dstH);
g = dst.getGraphics();
delta=(srcH << 16)/dstH;
pos=delta /2;
for (int y = 0; y < dstH; y++)
{
g.setClip(0, y, dstW, 1);
g.drawImage(tmp, 0, y - (pos >> 16), Graphics.LEFT | Graphics.TOP);
pos += delta;
}
return dst;
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