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Index › Programming Questions & Help › Programs › selection drag

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selection drag (Read 504 times)

bddbbd

selection drag
Sep 2^nd, 2007, 6:16am

Has anyone implemented a selection drag method in processing?
My own attempt is less than perfect, but I am at a loss as to how to improve it. My problem is that when the mouse stops moving (specifically, mouseDrag events are no longer being generated) my selection box disappears. It reappears properly when movement begins again, and it selects items appropriately, but it would be much better if it would persist when the mouse is still if the button is still pressed. Any thoughts would be much appreciated.

seltar

Re: selection drag
Reply #1 - Sep 2^nd, 2007, 11:26am

Code:


boolean dragging = false;
int startX, startY;

void setup()
{
  size(300,300);
  noFill();
  stroke(0);
}

void draw()
{
  background(255);
  if(dragging){
    rect(startX,startY,mouseX-startX,mouseY-startY);
  }
}
void mousePressed()
{
  startX = mouseX;
  startY = mouseY;
  dragging = true;
}
void mouseReleased()
{

  dragging = false;
}

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bddbbd YaBB Newbies Offline Posts: 2	Re: selection drag Reply #2 - Sep 2^nd, 2007, 5:15pm beautiful. that is exactly what I did, except I foolishly relied on drag events, because I thought other elements of my core java app would mess it up. thanks for the help- I had it up and running in 15 min.

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