INF2611/unit03.tex at main · Unisa-Notes/INF2611 · GitHub

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\documentclass[notes.tex]{subfiles}

\begin{document}
	\setcounter{chapter}{2}
	\chapter{Multiple Documents and Layouts}
		\section{Multiple Document Interface (MDI)}
			Applications that provide one document per main window are said to be SDI (single-document interface) applications. A multiple-document interface (MDI) consists of a main window containing a menu bar, toolbar, and a central \verb|QWorkspace| widget. The central workspace displays and manages several child windows.

			To implement an MDI, use an instance of \verb|QMdiArea|. This widget provides an area where child windows (\concept{subwindows}) are displayed. It arranges subwindows in a \concept{cascade} or \concept{tile} pattern. The subwindows are instances of \verb|QMdiSubWindow|. They are rendered within a frame that has a title, and buttons to show, hide and maximise it.

			\begin{sidenote}{QMdiArea Methods}
				\begin{itemize}[nosep]
					\item \verb|subWindowList()|
					\item \verb|windowOrder()|
						\begin{itemize}[nosep]
							\item \verb|CreationOrder| (Default)
							\item \verb|StackingOrder|
							\item \verb|ActivationHistoryOrder|
						\end{itemize}
					\item \verb|activateNextSubWindow()|
					\item \verb|activatePreviousSubWindow()|
					\item \verb|cacadeSubWindows()|
					\item \verb|tileSubWindows()|
					\item \verb|closeAllSubWindows()|
					\item \verb|setViewMode()|
						\begin{itemize}[nosep]
							\item \verb|SubWindow View|: (Default) Displays subwindows with window frames. Represented by $0$.
							\item \verb|Tabbed View|: Displays subwindows with tabs in a tab bar. Represented by $1$.
						\end{itemize}
				\end{itemize}
			\end{sidenote}

		\section{Layouts}
			\begin{definition}{Layout}
				Used to arrange and manage the widgets that make up a user interface within its container.
			\end{definition}
			Each widget has a recommended size defined in its \verb|sizeHint| property. When windows are resized, widgets in a layout are resized to meet their size hint.

			To avoid excessive spreading of widgets when the window size is increased, use \concept{spacers}.
			\subsection{Horizontal Layout}
				Lays widgets next to each other in a row.
				\begin{definition}{Group Box}
					Used to represent information that is related in some way. An instance of \verb|QGroupBox|. Appears in a frame with a title.

					Child widgets within a Group Box can be aligned and enabled or disabled collectively with a CheckBox.
					\begin{sidenote}{QGroupBox Properties}
						\begin{description}
							\item[checkable] Display a checkbox in Group Box's title. Child widgets enabled only when checkbox is checked. By default, GroupBoxes are not checkable.
							\item[flat] Space consumed by GroupBox is reduced.
						\end{description}
					\end{sidenote}
					\begin{sidenote}{QGroupBox Methods}
						\vspace*{-0.5cm}
						\begin{multicols}{3}
							\begin{itemize}[nosep]
								\item \verb|isCheckable()|
								\item \verb|isChecked()|
								\item \verb|setChecked()|
							\end{itemize}
						\end{multicols}
					\end{sidenote}
					Generates a \verb|clicked()| signal when the checkbox is selected, or when its shortcut key is pressed.
				\end{definition}

			\subsection{Vertical Layout}
				Arrange widgets vertically, in a column one below another.

			\subsection{Other Layouts}
				Other layouts include GridLayout, and FormLayout.

		\rulechapterend
\end{document}