The xmag program allows you to magnify portions of an X screen. If no explicit
region is specified, a square with the pointer in the upper left corner is displayed
indicating the area to be enlarged. The area can be dragged out to the desired size by
pressing Button 2. Once a region has been selected, a window is popped up showing a blown
up version of the region in which each pixel in the source image is represented by a small
square of the same color. Pressing Button l in the enlargement window shows the position
and RGB value of the pixel under the pointer until the button is released. Typing
"Q" or "^C" in the enlargement window exits the program.
The application has 5 buttons across its top. Close deletes this particular
magnification instance. Replace brings up the rubber band selector again to select
another region for this magnification instance. New brings up the rubber band
selector to create a new magnification instance. Cut puts the magnification image into the
primary selection. Paste copies the primary selection buffer into xmag. Note
that you can cut and paste between xmag and the bitmap program. Resizing xmag
resizes the magnification area. xmag preserves the colormap, visual, and window
depth of the source.
WIDGETS
xmag uses the X Toolkit and the Athena Widget Set. The magnified image is
displayed in the Scale widget. For more information, see the Athena Widget Set - C Language Interface manual. Below is the
widget structure of the xmag application. Indentation indicates hierarchical
structure. The widget class name is given first, followed by the widget instance name.
Xmag xmag
RootWindow root
TopLevelShell xmag
Paned panel
Paned pane2
Command close
Command replace
Command new
Command select
Command paste
Label xmag label
Paned pane2
Scale scale
OverrideShell pixShell
Label pixLabel
OPTIONS
- source geom
This option specifies the size and/or location of the source region on the screen. By
default, a 6464 square is provided for the user
to select an area of the screen.
-mag integer
This option indicates the magnification to be used. 5 is the default.
AUTHORS
Dave Sternlicht and Davor Matic, MIT X Consortium.