snapshot

Capture a screen image

Syntax:

snapshot [-A widthxheight] [-f filename] [-o oxo]
         [-p printer_name] [-S i|n] [-s server] [-W rid]
         [-x x_pos] [-y y_pos]

Options:

-A widthxheight

Area (capture size).

-f filename

Output filename.

-o oxo

Origin.

-p printer_name

Printer name.

-S i|n

Specify initial window state (i - iconify, n - normal).

-s server

Use this server node or device name.

-W rid

Capture Region ID.

-x x_pos

Initial x_pos position of window.

-y y_pos

Initial y_pos position of window.

Description:

The snapshot utility captures portions of the Photon workspace and saves the image as a PostScript (.ps) file.

To take a snapshot of an image:

1. Specify whether the snapshot image goes to a printer or to a file:
   • printer-select the printer displayed, or one from the pull-down list in the Printer field. If required, you can modify the print properties by clicking the Properties... button. For more information on print properties, see the chapter on "Using the Print Dialogs" in the Photon User's Guide.
   • file-choose Print to File and specify the filename. (Default is printn.ps.) Note that if you select "BMP Spool File" or "PS Spool File," the image is automatically sent to a file.
2. Specify one of the following snapshot types and click Begin:
   • Whole Screen - The current screen image is captured.
   • Selected Window - The snapshot dialog disappears and the pointer changes to a yellow "finger." Position the pointer over the window you want to capture, then click. To cancel without taking a snapshot, click on any area of the workspace (but not in a window). Note that if you click anywhere inside a window (i.e. in the window pane), you'll capture the window without the frame. To capture the window with its frame, click anywhere on the frame.
   • User Defined Area - The snapshot dialog disappears and the pointer changes to a yellow "crosshair." Position the pointer where you want to start the screen capture, then drag to create a boundary around the area you want to capture. A snapshot of the area inside the boundary will be taken as soon as you release the mouse button.

Switching consoles

When snapshot is running, you can switch consoles in the standard fashion (using the Console Selector or the Ctrl -Alt -1...9 keychords). The Snapshot dialog will follow between console switches.

However, once you click on a Snapshot Type button (Whole Screen, Selected Window, or User Defined Area) and click Begin, only the current console is available until you capture an image or cancel.

Examples:

Run using Photon server on node 4:

snapshot -s4

Or

snapshot -s//4/dev/photon

Run at initial position (10,10):

snapshot -x10 -y10

Grab the area of the screen whose origin lies at (50,50) and whose dimension is 100*100 then save it as a BMP Spool File in /src/photon/apps/print1.bmp:

snapshot -A 100*100 -o 50*50 -p "BMP Spool File" -f /src/photon/apps/print1.bmp
    

Environment variables:

The PWM_PRINTSCRN_APP lets you specify the application to start when the Print Scrn key is pressed. By default, the snapshot utility is started.