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Java Development

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Developer
Posts: 1,006
Registered: ‎05-22-2009
My Device: Not Specified
Accepted Solution

How to use graphics.drawBitmap

I have Bitmap of 10*15.

 

If i want to draw a Bitmap occuping full displaywidth and image height ,can i do it using this image.

 

i tried using this,But i cannot get the single image to occupy the required width.Method is

 

    graphics.drawBitmap(10,20,340,image.getHeight(),image 0, 0);

 

 

Is it possible?

 

Regards

Rakesh shankar.P

Developer
Posts: 1,807
Registered: ‎04-28-2009
My Device: Z10 (STL100-4)-10.3.2.858, Z10 (STL100-3)-10.3.1.2576, Z30 (STA100-5)-10.3.1.2582, Passport (SQW100-1)-10.3.1.2576, PlayBook (16GB)-2.1.0.1917
My Carrier: Verizon

Re: How to use graphics.drawBitmap

drawBitmap doesn't do any scaling internally. You need to scale the Bitmap before calling the function in order to get it to take up the full width of the screen.
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Developer
Posts: 263
Registered: ‎05-18-2011
My Device: Curve 9300, BB10 Dev Alpha C, Z10

Re: How to use graphics.drawBitmap

 is right. You need to scale your bitmap to the required width first. You may like to use the following method to scale your bitmap by width:

 

Bitmap resizeByWidth(Bitmap originalBitmap, int w) {
 double ratio = (double) originalBitmap.getWidth() / (double) w;
 int h = round((double) originalBitmap.getHeight() / ratio);

 Bitmap scaledBitmap = new Bitmap(w, h);
 originalBitmap.scaleInto(scaledBitmap, Bitmap.FILTER_BILINEAR);
 return scaledBitmap;
}

int round(double d) {
 return (int) Math.ceil(d);
}

 

--tom