for GIMP 1.0
Last updated: 10 September 1998
|New||Create a new (empty) image in its own window|
|Open||Open an existing image in its own window|
|About...||"about" what you would expect...|
|Tip of the day||Shows tips for using the GIMP|
|Dialogs ->||Allows access to various dialogs even if no images are currently open|
|Quit||Hasta la vista, baybee!|
Note that there is no Save menu entry here. That's because the GIMP opens each image into a unique window, so Save will appear on a menu for a particular image. We'll get to that one later.
|DB Browser||Browse the Procedutral database (PDB), a list of all functions available to plug-ins, script-fu, and so forth.|
|Screen Shot||Grabs an image of a single window or the whole screen.|
|Script-Fu ->||A Scheme-based language that lets you automate a series of GIMP operations to create more complex effects.|
|Web Browser ->||Interface to your web browser, with sub-menu entries for all the online doc sites, main GIMP sites, and so forth.|
The next row contains the familiar move, magnify and crop tools. After this are the transform tool (rotation, scaling, shearing and perspective), flip (horizontal and vertical), and text tools.
The final 3 rows contain various drawing tools - the color picker, flood fill, and blend; pencil, paintbrush and eraser; and airbrush, clone and convolver tools.
Some of these tools have option dialogs; double clicking on a tool pops up the tool dialog, as does selecting File->Dialogs->Tool Options . If the Options dialog is displayed, selecting another tool causes that tool's dialog to replace the current one. A couple of tools have dialogs that pop up when you actually try to use the tool; these are separate from the tools dialogs referenced here.
Selecting New pops up a dialog to set a few basic parameters for the new image. Width and height are (hopefully!) obvious. RGB is for color images, Grayscale is for monochrome (black, white and shades of gray) images.
The GIMP knows about RGB images, grayscale images, and indexed images. With RGB images, each pixel (or point) on the image has a color associated with it made up of the Red, Green and Blue values for that pixel's color. Indexed images may also be color, but in this case each pixel's value is an index into a table of colors, known as a colormap. Grayscale images can be implemented in either of these fashions, but are treated as a special case of RGB, since that allows for far more flexibility in image manipulation.
Some GIMP operations work only on certain types of images; RGB is by far the best in most cases. This refers only to manipulating the image within the GIMP; the type of image you load or save is typically tied to a particular image type. In this case you simply convert image types after loading or before saving. This will be discussed under Changing Image Types.
The Fill type refers to the initial contents of the new image. The image may be filled with the current background color (white by default), white (for times when the current background color is something else) or it can be transparent.
This will pop up a menu with a number of items; the only one we care about right now is the File -> menu. Selecting this results in another menu with some of the same entries as the main File menu, and some extras, including Save and Save as... .
The GIMP tries to keep track of whether you have changed anything or not. If you have, the image is considered "dirty" or "unclean" (do I hear bells ringing?); otherwise the image is "clean". The action resulting from selecting Save depends on whether the image is clean or dirty. If it's clean (nothing has changed since you either loaded it or since your last Save), nothing happens. If it's dirty, the GIMP proceeds with the save process. Selecting Save as... will always initiate the save process.
The Save options dialog looks very much like the Load options dialog above. By default, if there is an extension on the file name, the GIMP tries to save the appropriate type of file (e.g., if the extension is ".jpg" or ".jpeg", it tries to write a JPEG file). You can also explicitly set a file type via the menu, changing "By extension" to the correct file type.
If you are unsure whether the file type you want works for the current image type, check that menu! It always lists all the file types the GIMP recognizes, but all file types not valid for the current image type will be grayed out. In this case, you need to cancel the save operation and change the image type. This will be covered soon, under Changing Image Types .
Flattening will remove transparency.
If you really want to save all the layers separately (in case you want to work more on the image later), you can do this by choosing the XCF image type. This image type was developed specifically to save GIMP layers.
Both of these actions (Merge Visible Layers and Flatten Image) are available off the Layers menu, which is available from the main menu for a given image (via the MENU mouse button). You might also want to leave the Layers dialog up (at least until you get used to layers) to see the current layers. This dialog is available off the main "Files- Dialogs" menu, and off the images main menu via "Layers- Layers & Channels..."
Selecting RGB or Grayscale quietly converts the image to that type. Selecting Indexed results in a dialog. If you select the "Generate Optimal Palette" option (the default), you can define the maximum number of colors to allow in the indexed image's colormap. You might want to play around with the dithering; most of the time you will want to leave this selected.
Four sub-panels are available: Display, Interface, Environment, and Directories.
Regardless of the number of image windows there will be only one toolbar per GIMP invocation. I do not recommend running multiple copies of the GIMP; it's easy to lose track of which toolbar affects which images.
The GIMP focus may be different than your window manager focus. If your window manager assigns focus by pointer traversal instead of pointer clicking, the GIMP focus will stay with the last window over which the pointer wasa clicked.
The File, Edit and Select menus handle the usual operations, plus a few others we'll cover later. The View menu covers zooming in and out, window information, and toggling of visible window features. The remaining menus actually handle the brunt of the GIMP's work for an individual image, and will be covered in a later section.
You can also configure and customize the GIMP.
Copyright 1997, 1998 Miles O'Neal, Austin, TX. All rights reserved.