What is Available

The base class for all elements in the GRAPE control window is the abstract class Item, a subclass of Root. The static elements like texts and color rectangles are subclasses of Item, the variable elements like rulers are subclasses of the abstract class Interactive, a subclass of Item.

There exists many different interactive types in GRAPE which can be used to control variables or to send methods to different objects (the number given with each element refers to its documentation in chapter 9.1):

• Buttons (9.1.3.2) are used to send a method to an instance or class. The instance can be set explicitly, if no special instance was given the method of the button will be send to the manager's current instance.
• Checkboxes (9.1.3.4) are a special kind (a subclass) of Button, they can be toggled between two states and are used to switch flags. If a whole set of flags has to be handled a CheckField (9.1.3.3) -- a collection of Checkboxes -- can be used.
• Inputs (9.1.3.13) are the simplest elements for controlling an integer, float, double or string variable, the variable can be changed by typing in the new value.
• Rulers (9.1.3.22) are a more comfortable way to control a variable. Additional to an input field they contain elements for changing the variable with the mouse.
• Function_Rulers (9.1.3.10) are time-depended rulers. Their variable is controlled by a spline which can be edited with the Spline_Editor (9.1.3.26) that is associated to the function-ruler.
• FileLists (9.1.3.8) are used to select a file from the list of files in the current directory matching a given wildcard.

As you might have noticed while working with GRAPE there are much more interactive elements, some of them subclasses of the ones mentioned above, like Slider (9.1.3.24) which is a subclass of Ruler with a different look but basically the same functionality. Other interactive elements are composed of several (simple) elements, they can be very complex but nevertheless they are easy to use -- like Color_Selectors (9.1.3.5), which allow editing a color given by RGB values in RGB or HSV mode, or Matrix_Editors (9.1.3.18) which control a transformation matrix. The basic classes for these composite elements are Group (9.1.3.12) and Layer (9.1.3.16).

Most of these interactives were already described in the introduction in section 4.1, the full documentation of all interactive classes and their methods can be found in chapter 9.1.