The scaling of image in J2ME

A sniplet from the article "taking Pictures with Mmapi"

Http://developers.sun.com/techtopics/mobility/midp/articles/picture/

Clapton_xp@hotmail.com

Create thumbnails

The pixels in the picture can be manipulated in the MIDP2.0, not in the MIDP1.0. This example uses Graphics.setclip () to make each pixel draw each time.

Private image Createthumbnail (image image) {

int sourcewidth = Image.getwidth ();

int sourceheight = Image.getheight ();



int thumbwidth = 64;

int thumbheight =-1;



if (thumbheight = = 1)

Thumbheight = Thumbwidth * sourceheight/sourcewidth;



Image thumb = image.createimage (Thumbwidth, thumbheight);

Graphics g = thumb.getgraphics ();



for (int y = 0; y < thumbheight; y++) {

for (int x = 0; x < thumbwidth/x + +) {

G.setclip (x, Y, 1, 1);

int dx = x * sourcewidth/thumbwidth;

int dy = y * sourceheight/thumbheight;

G.drawimage (image, X-dx, Y-dy,

Graphics.left | Graphics.top);

}

}



Image immutablethumb = image.createimage (thumb);



return immutablethumb;

}