immagbox
Magnification box for image displayed in scroll panel
Description
Use the immagbox function to add a
magnification box to the same figure as an image contained in a
scroll panel. A magnification box is an editable text box that
contains the current magnification of the target image. When you
enter a new value in the magnification box, the magnification of
the target image changes. When the magnification of the target
image changes for any reason, the magnification box updates the
magnification value.
hbox = immagbox(hparent,himage)himage is a
handle to the target image in the scroll panel.
hparent is a handle to the
figure or uipanel object that will contain the
magnification box. The function returns
hbox, a handle to the
magnification box.
Examples
Add Magnification Box to Scrollable Image
Display an image in a figure. The example suppresses the standard toolbar and menubar in the figure window because these do not work with the scroll panel.
hFig = figure('Toolbar','none','Menubar','none'); hIm = imshow('pears.png');
Create a scroll panel to contain the image.
hSP = imscrollpanel(hFig,hIm); set(hSP,'Units','normalized','Position',[0 .1 1 .9])
Add a magnification box to the figure. Set the position of the magnification box to the lower left corner of the figure.
hMagBox = immagbox(hFig,hIm); pos = get(hMagBox,'Position'); set(hMagBox,'Position',[0 0 pos(3) pos(4)])
Get the scroll panel API so that you can control the view programmatically.
apiSP = iptgetapi(hSP);
Set the magnification of the image to 200% by using the scroll panel API function setMagnification. Notice how the magnification box updates.
apiSP.setMagnification(2)
