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author | Jack Jansen <jack.jansen@cwi.nl> | 1995-10-10 14:43:20 (GMT) |
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committer | Jack Jansen <jack.jansen@cwi.nl> | 1995-10-10 14:43:20 (GMT) |
commit | da53c5277c4fb10fbd7798f85eafa91c56819311 (patch) | |
tree | 03010fcc0215afe9e2874fbc98b0474627ee2706 /Doc/libmacui.tex | |
parent | 06cf5d0d4c30a98226da3fd18c9227c5e7d09fd7 (diff) | |
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Documented MACFS, macostools, EasyDialogs and FrameWork modules.
Diffstat (limited to 'Doc/libmacui.tex')
-rw-r--r-- | Doc/libmacui.tex | 201 |
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diff --git a/Doc/libmacui.tex b/Doc/libmacui.tex new file mode 100644 index 0000000..08f0236 --- /dev/null +++ b/Doc/libmacui.tex @@ -0,0 +1,201 @@ +\section{Standard module \sectcode{EasyDialogs}} +\stmodindex{EasyDialogs} + +The \code{EasyDialogs} module contains some simple dialogs for +the Macintosh, modelled after the \code{stdwin} dialogs with similar +names. + +The \code{EasyDialogs} module defines the following functions: + +\renewcommand{\indexsubitem}{(in module EasyDialogs)} + +\begin{funcdesc}{Message}{str} +A modal dialog with the message text \var{str}, which should be at +most 255 characters long, is displayed. Control is returned when the +user clicks ``OK''. +\end{funcdesc} + +\begin{funcdesc}{AskString}{prompt\optional{\, default}} +Ask the user to input a string value, in a modal dialog. \var{Prompt} +is the promt message, the optional \var{default} arg is the initial +value for the string. All strings can be at most 255 bytes +long. \var{AskString} returns the string entered or \code{None} in +case the user cancelled. +\end{funcdesc} + +\begin{funcdesc}{AskYesNoCancel}{question\optional{\, default}} +Present a dialog with text \var{question} and three buttons labelled +``yes'', ``no'' and ``cancel''. Return \code{1} for yes, \code{0} for +no and \code{-1} for cancel. The default return value chosen by +hitting return is \code{0}. This can be changed with the optional +\var{default} argument. +\end{funcdesc} + +Note that \code{EasyDialogs} does not currently use the notification +manager. This means that displaying dialogs while the program is in +the background will need to unexpected results and possibly crashes. + + +\section{Standard module \sectcode{FrameWork}} +\stmodindex{FrameWork} + +The \code{FrameWork} module contains classes that together provide a +framework for an interactive Macintosh application. The programmer +builds an application by creating subclasses that override various +methods of the bases classes, thereby implementing the functionality +wanted. Overriding functionality can often be done on various +different levels, i.e. to handle clicks in a single dialog window in a +non-standard way it is not necessary to override the complete event +handling. + +The \code{FrameWork} is still very much work-in-progress, and the +documentation describes only the most important functionality, and not +in the most logical manner at that. Examine the source for more +esoteric needs. + +The \code{EasyDialogs} module defines the following functions: + +\renewcommand{\indexsubitem}{(in module FrameWork)} + +\begin{funcdesc}{Application}{} +An object representing the complete application. See below for a +description of the methods. The default \code{__init__} routine +creates an empty window dictionary and a menu bar with an apple menu. +\end{funcdesc} + +\begin{funcdesc}{MenuBar}{} +An object representing the menubar. This object is usually not created +by the user. +\end{funcdesc} + +\begin{funcdesc}{Menu}{bar\, title\optional{\, after}} +An object representing a menu. Upon creation you pass the +\code{MenuBar} the menu appears in, the \var{title} string and a +position (1-based) \var{after} where the menu should appear (default: +at the end). +\end{funcdesc} + +\begin{funcdesc}{MenuItem}{menu\, title\optional{\, shortcut\, callback}} +Create a menu item object. The arguments are the menu to crate the +item it, the item title string and optionally the keyboard shortcut +and a callback routine. The callback is called with the arguments +menu-id, item number within menu (1-based), current front window and +the event record. +\end{funcdesc} + +\begin{funcdesc}{Separator}{menu} +Add a separator to the end of a menu. +\end{funcdesc} + +\begin{funcdesc}{SubMenu}{menu\, label} +Create a submenu named \var{label} under menu \var{menu}. The menu +object is returned. +\end{funcdesc} + +\begin{funcdesc}{Window}{parent} +Creates a (modeless) window. \var{Parent} is the application object to +which the window belongs. The window is not displayed until later. +\end{funcdesc} + +\begin{funcdesc}{DialogWindow}{parent} +Creates a modeless dialog window. +\end{funcdesc} + + +\subsection{Application objects} +Application objects have the following methods, among others: + +\renewcommand{\indexsubitem}{(Application method)} + +\begin{funcdesc}{makeusermenus}{} +Override this method if you need menus in your application. Append the +menus to \code{self.menubar}. +\end{funcdesc} + +\begin{funcdesc}{getabouttext}{} +Override this method to return a text string describing your +application. Alternatively, override the \code{do_about} method for +more elaborate about messages. +\end{funcdesc} + +\begin{funcdesc}{mainloop}{\optional{mask\, wait}} +This routine is the main event loop, call it to set your application +rolling. \var{Mask} is the mask of events you want to handle, +\var{wait} is the number of ticks you want to leave to other +concurrent application (default 0, which is probably not a good +idea). This method does not return until \code{self} is raised. + +The event loop is split into many small parts, each of which can be +overridden. The default methods take care of dispatching events to +windows and dialogs, handling drags and resizes, Apple Events, events +for non-FrameWork windows, etc. +\end{funcdesc} + +\begin{funcdesc}{do_char}{c\, event} +The user typed character \var{c}. The complete details of the event +can be found in the \var{event} structure. This method can also be +provided in a \code{Window} object, which overrides the +application-wide handler if the window is frontmost. +\end{funcdesc} + +\begin{funcdesc}{do_dialogevent}{event} +Called early in the event loop to handle modeless dialog events. The +default method simply dispatches the event to the relevant dialog (not +through the the \code{DialogWindow} object involved). Override if you +need special handling of dialog events (keyboard shortcuts, etc). +\end{funcdesc} + +\subsection{Window Objects} + +Window objects have the following methods, among others: + +\renewcommand{\indexsubitem}{(Window method)} + +\begin{funcdesc}{open}{} +Override this method to open a window. Store the MacOS window-id in +\code{self.wid} and call \code{self.do_postopen} to register the +window with the parent application. +\end{funcdesc} + +\begin{funcdesc}{close}{} +Override this method to do any special processing on window +close. Call \code{self.do_postclose} to cleanup the parent state. +\end{funcdesc} + +\begin{funcdesc}{do_postresize}{width\, height\, macoswindowid} +Called after the window is resized. Override if more needs to be done +than calling \code{InvalRect}. +\end{funcdesc} + +\begin{funcdesc}{do_contentclick}{local\, modifiers\, event} +The user clicked in the content part of a window. The arguments are +the coordinates (window-relative), the key modifiers and the raw +event. +\end{funcdesc} + +\begin{funcdesc}{do_update}{macoswindowid\, event} +An update event for the window was received. Redraw the window. +\end{funcdesc} + +\begin{funcdesc}{do_activate}{activate\, event} +The window was activated (\code{activate==1}) or deactivated +(\code{activate==0}). Handle things like focus highlighting, etc. +\end{funcdesc} + +\subsection{DialogWindow Objects} + +DialogWindow objects have the following methods besides those of +\code{Window} objects: + +\renewcommand{\indexsubitem}{(DialogWindow method)} + +\begin{funcdesc}{open}{resid} +Create the dialog window, from the DLOG resource with id +\var{resid}. The dialog object is stored in \code{self.wid}. +\end{funcdesc} + +\begin{funcdesc}{do_itemhit}{item\, event} +Item number \var{item} was hit. You are responsible for redrawing +toggle buttons, etc. +\end{funcdesc} + |