Problem saving an image to disk - sometimes its black??
Hi i'm trying to create a thumbnail of an image and save it to disk using Image and Graphics2D. The problem i'm having is that sometimes when i save the image its blank\black, it seems totally random in doing this i.e. it will work find one time and then not work the next time (i'm actually processing a whole folder of images in my program)
Image image = new ImageIcon(imgfile).getImage();
BufferedImage bi = new BufferedImage(100,100,BufferedImage.TYPE_INT_RGB);
Graphics2D g2d = bi.createGraphics();
if(image.getWidth(null) > image.getHeight(null)){
// create landscape image thumbnail
image = image.getScaledInstance(133,100,Image.SCALE_DEFAULT);
// here i'm cropping the image so that its square + focusing the center of the image
g2d.drawImage(image, 0, 0, 100, 100, 15, // start x coordinate 0, // start y corodinate 115,// end x corodinate 100,// end y coordinate null);
else...
If anyone could shed any light on to why this problem is occuring i would be really greatful, its driving me nuts! :P
btw: if anyone knows of a better way of doing this please let me know to. i'm sure u should b able to scale the image and crop it just using Graphics2D, just dont know how though...
Many Thanks,
Tom
some of the images that i'm processing are dark but there are many others that aren't, all images that are outputed are totally black.
I'm kind of suspecting that it may be a case of the image isn't being fully loaded when the scale\crop is performed. i have noticed that the larger the file\resolution the more likely it will be draw\saved correctly.,this leads me to beleave that the problem may lie in the loading...
I have been looking at MediaTracker as that seems to be meant for this sort of situation but all the examples i see involve JFrames\Applets which my program doesn't make use of. Am i right in thinking that MediaTracker requires a java.awt.Component when being created? is there anyway round of this or is there anything else you can think of that i could use to do a similar job?
Many Thanks, Tom
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