scaling image

[OmerHalit]

hi,

i need to print a page which contains a picture. Well, everything working correct but i am missing one thing.

I am scaling an image that will fit an A4 size paper. and the next line, i am bringing up the print dialog screen. but the problem is, when the dialog screen appears, it causes the scaling process stop, and when i say print, the picture doesnt appear.

but when i do the scale image with another button(just to test) and wait around 2-3 seconds, and then when i print the page, it's ok.

i need to check the status of the scaling process before i bring up the print dialog but i couldnt manage it..

here is my code

Map4Print = ScaleImage(findPath.bufferResim, 500,500); //the picture that i want to print.

        PrinterJob job = PrinterJob.getPrinterJob();

        job.setPrintable(new newprintjob());
        boolean doPrint = job.printDialog();
        if (doPrint) {
            try {
                job.print();
                ShowDialogBox("Print","Printing is in proccess. Please wait for a while.",JOptionPane.INFORMATION_MESSAGE);
            } catch (PrinterException e) {
                ShowDialogBox("Print Error",e.getMessage(),JOptionPane.WARNING_MESSAGE);
            }
        }

is there a way that i can check the status of "scaling" process. i was thinking maybe when i say

Image original = resim;
          bufferResim = original.getScaledInstance(targetComponent.getWidth(), targetComponent.getHeight(), Image.SCALE_FAST);
System.out.println(bufferResim);

it would give me null coz it's not scaled yet, but it does give me the address.. :o

thanks :)

[Webuser]

hi,

give me the address.. :o

thanks :)

You mean direction? :rolleyes:

Well you can simply redraw your image with new params ...

public void paintComponent(Graphics g){
g.drawImage(...,new_width,new_height,...);
}

And not to miss its scale use some coefficient value like a

int new_width=width+(width*100/coeff);

[OmerHalit]

thanks for the reply..

well, you know if we don't initialize any variable, it would return "null". So i was thinking that my image variable could return null too if the scale proccess doesnt end. so i could make a check like

while the variable is null, wait for it to be assigned value... something like that. but it doesnt, so never mind it..

it's just i need to wait between two lines for my scale proccess to be completed. but while waiting, the app should be scaling the image instead of just waiting..

[OmerHalit]

well, i got my answer with my trials :)

let me share with you too..

i have noticed that if the image is not scaled yet, the getheight method would being -1.

so, i made i check like this

Image original = resim;
        PrintableMap = original.getScaledInstance(450, 450, Image.SCALE_SMOOTH);
        int i = -1;
        do{
            System.out.println(++i);
            System.out.println(PrintableMap.getHeight(this));
        }
        while(PrintableMap.getHeight(this) == -1);

the value of variable i will change. i got 65 for the first click and 19 for the third click.. it worked well.. (so far :D )