ZDoom

    Ctrl-S      Save current image
    Z           Previous image in directory
    X           Next image in directory
    L           Lock / unlock guides
    Tab         Select next control
    Arrows      Select controls
    Space       Activate selected control
    Esc         Quit program

Spoiler: the readme

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Code: Select all

  Usage: grabpng [[options] <file1> [file2] [...]]

  Installation:
  
    Put grabpng anywhere you like. Make a shortcut to it on your
    desktop or in your programs menu. If you want to use grabpng
    in batch mode, you'll want to add it's location to your PATH
    environment variable.
  
    If you are not sure what your PATH environment variable is, 
    but you still want to use grabpng in batch mode, just put it
    in C:\Windows\System32.
    
  Overview:
  
    If you installed grabpng correctly you can click the icon or
    type "grabpng" at the command line to use the visual editor.
    
    If you are using grabpng from the command line you have
    powerful batch options available to you:

  Options:
                    
    -grab <x> <y>     Set contents of grAb chunk in files.
    -alph             Create alPh chunk in files.
    -noalph           Remove alPh chunk from files.

  Notes:

    The <x> and <y> grab values can be expressions.
    
    Variables allowed in expressions are:
      w - image width
      h - image height
      
    Constants allowed in expressions are:
      W - 320
      H - 200
      
  Keyboard Shortcuts:

    Ctrl-S    Save current image
    Z         Load previous image in directory
    X         Load next image in directory
    Tab       Select next control
    Arrows    Select controls
    Space     Activate selected control
    Esc       Quit program

  Examples:

    # Load the visual editor.
    
    grabpng

    # Load mymonster.png in the visual editor.
    
    grabpng mymonster.png

    # Grab two pngs at their centers and set alPh chunks.
    
    grabpng -grab w/2 h/2 -alph mydecal.png mydecal2.png

    # Grab all pngs in the current directory at their horizontal 
    # center, 4 pixels from the bottom of the image.
    
    grabpng -grab w/2 h-4 *.png

Graf Zahl wrote:570kb for such a small tool? iostream must be even worse with MinGW than with VC++...

bagheadspidey wrote:Also, you might want to re-download it, that looks like output from a couple of versions ago.

bagheadspidey wrote:Also, you might want to re-download it, that looks like output from a couple of versions ago.

Right... ;-)

bagheadspidey wrote: Graf: I'm not sure why the windows exe is so big... the linux binary is much smaller. I have a feeling if it was compiled on windows it would not be so big... I'm not using iostream at all this time =/

bagheadspidey wrote:See that tiny bit of help it displayed? You know, the text that shows you how to use the command? ;p Now it displays a huge logo and a decent sized help screen =)

The Windows version links the entire iostream module plus the incredibly bloated exception handling module into the executable.

I'm not sure if the windows command prompt interprets matching patterns in file names or if it is up to the program to do that,

Hirogen2 wrote:

bagheadspidey wrote:See that tiny bit of help it displayed? You know, the text that shows you how to use the command? ;p Now it displays a huge logo and a decent sized help screen =)

Yes; I did update and then It Worked™. Though, the fact that filecharset does not support an -o option makes for a broken out-of-src build with autotools.

Hirogen2 wrote:

I'm not sure if the windows command prompt interprets matching patterns in file names or if it is up to the program to do that,

Windows does not give that sort of help. I would not bother with it anyway since grabpng is usually used to set some coordinates, rather than zero it; and coords for sprites are often different, depending on sprite.