Undo Framework

Qt's undo framework is an implementation of the Command pattern, which provides advanced undo/redo functionality.

To show the abilities of the framework, we have implemented a small diagram application in which the diagram items are geometric primitives. You can edit the diagram in the following ways: add, move, change the color of, and delete the items.

Files:

tools/undo/commands.cpp
tools/undo/commands.h
tools/undo/document.cpp
tools/undo/document.h
tools/undo/mainwindow.cpp
tools/undo/mainwindow.h
tools/undo/mainwindow.ui
tools/undo/main.cpp
tools/undo/undo.pro
tools/undo/undo.qrc