MATLAB Answers

Matlab ResizeFcn callback

83 views (last 30 days)
Julián Francisco
Julián Francisco on 26 Feb 2012
I am worried about the look and feel of my GUI designed with Matlab. In concrete, I do not like how the figure window resizing is achieved. I have an uitabgroup (tabpanel) inside which there are three panels with border etchedin. Each time the figure is resized, it appears flickering between both positions of the panels. I hate this optical effect. So, I decided to build my own resizefcn callback to get being pleased. However, I realize Matlab first resizes the figure window and then it runs the commands inside the resizefcn callback. I would like to know if there is some solution that lets me to change this behaviour.
  3 Comments
Walter Roberson
Walter Roberson on 27 Feb 2012
The resize mechanism is ugly. But until such time as MATLAB comes complete with built-in layout functions for the elements ("put this part down here if there is room"), I don't know that anything can be done.

Sign in to comment.

Accepted Answer

Jan
Jan on 27 Feb 2012
Sometimes the resizing looks weird: I have a uitree object on the left side of a GUI. During the resizing movement (mouse hold down, ResizeFcn is not called), the display is as expected, when I have selected the right lower corner of the figure. Then the lower left corner of the uitree keeps its absolute position in the figure, while the size is not changed - not nice, but not confusing.
But when I select the lower or left border of the figure, the uitree behaves funny, e.g. the height is reduced by the double rate than the reduction of the heigth of the figure. The optical impression is as strange as the textual description...
Of course everything is fine, when the ResizeFcn is called after lifting the mouse button. But the "look&feel" during the resizing is awkward.
2 workarounds:
  1. Close your eyes during resizing. It's time to calm down and take a break from visual impressions.
  2. Disable the resizing controlled by Matlab, but create a dedicated WindowButtonDownFcn by your own. If the mouse clicks near to the border (or in dedicated objects in the corners), the cursor changes to the appropriate shape and the WindowButtonMotionFcn can control the position of the figure.
  3 Comments
Julián Francisco
Julián Francisco on 28 Feb 2012
@Jan Simon: I am not worried about the resizing made changing the figure window size with the mouse but only the one achieved pressing the resize button. So, I will try to build a WindowButtonDownFcn for my purpose.

Sign in to comment.

More Answers (2)

Malcolm Lidierth
Malcolm Lidierth on 27 Feb 2012
If you a using the mouse to resize, the figure will always be updated multiple times because it has multiple sizes between the start and end of the mouse drag. There are any number of solutions. See http://undocumentedmatlab.com/blog/controlling-callback-re-entrancy/
  1 Comment
Julián Francisco
Julián Francisco on 27 Feb 2012
@Malcolm Lidierth: Thank you for your answer. I was referring to the resizing that occurs when the resize button of the figure window upper right corner is pressed.

Sign in to comment.


Walter Roberson
Walter Roberson on 27 Feb 2012
You might be able to reduce the flash grunge by setting the figure visibility to 'off' during the resize process, and then to 'on' again when the resize is finished.
  1 Comment
Julián Francisco
Julián Francisco on 27 Feb 2012
@Walter Roberson: Thank you for your answer. I have already tried that solution but, as I mentioned on my above comments, Matlab first resizes the figure window and then it runs the resizefcn callback.

Sign in to comment.

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by