ModelEditor

ModelEditor plugin is not yet released. It will be released as an experimental plugin with QtCreator 3.6. You must manually enable the plugin in "Help / About Plugins" dialog.

If you want to try it right now, please compile QtCreator yourself from master branch or download latest unstable snapshot from http://download.qt.io/snapshots/qtcreator/master/. Of course there is no support for these versions. You have been warned! There are no binary packages of the plug-in available for QtCreator 3.5 (or older).

Features

• Create UML-alike models with structured diagrams
• Define packages, classes, components, use-cases and activities
• Edit element properties including multi-selection (e.g. change color of many elements at once)
• Design your diagrams with only a few clicks because of automatic coloring, easy alignment and automatic layout of labeling
• Add C++ classes and components by simply dragging files from project explorer on diagrams
• Navigate from class on diagram to source code
• Configure your own model elements with custom icons
• Store models and diagrams in a single xml file

Examples

The unfinished model of ModelEditor itself: modeleditor.qmodel

Planned Changes

Feature	Prio	Version	Status
Use only one document and one editor with a combobox to select open diagrams	1	3.6	Done
Change key short cut for "Rename" (reserve F2 for "Goto source") to <Return>	1	3.6	Done
Support model specific customization	1	3.7	In Work
Edit element name in diagram	1		Open
Implement user-configurable relations	1		Open
User may drag end of relation to different element on diagram	2	3.7	Done
Implement action "open parent diagram" with key short cut Ctrl+Shift+P	2	3.6	Done
Implement copy of diagram image to clipboard for selected elements	2	3.7	Done
Improve declaration parser of class members	2	3.7	In Work
Restore last used toolbar for each diagram	2	3.7	Done
Implement swim lanes	2		Open
Implement command line tool for exporting diagrams	2		Open
Implement relation type for state diagram (auto counter)	2		Open
Configure state diagram elements and toolbar	2		Open
Implement semi-auto layout for sequence diagrams	2		Open
Configure sequence diagram elements and toolbar	2		Open
Implement printing of diagrams	3		Open
User may drag end of relation for nicer diagram layout	3		Open
Use a nice icon font for member attributes	3		Open

New in Version 3.7

Model Specific Configuration

tbd

Class Member Editor

The class member editor supports a kind of C++ syntax to define attributes and methods in class items.

Declarations may span several lines only in brackets

This works:

void method(int a,
            int b);

but this will not:

void
method(int a, int b);

Lazy parser

• You don't need to write a colon after specifiers like "public" or "signals".
• You don't need to write a semicolon at the end of a line

Member grouping

Like "public:" or "slots:" you may use "[group]" to group members. Example:

[Geometry]
QPointF position;
QSizeF size;

Limitations

The parser is very simple. It is not a real C++ parser but a simple text parser - a real C++ parser like it is used for code completion or refactoring need more context than is available in the class members edit field.

Because of that the parser cannot recognize all valid C++ syntax. Some limitations are:

• Multi-line declarations (see above)
• Preprocessor macros will not be translated. But some Qt keywords are known (e.g. Q_SLOT or Q_DECL_OVERRIDE)
• Funtion pointer declarations are interpreted as methods.
• throw() and noexpect() specifiers are not ignored but will make the declaration a method

Minor Improvements

tbd

Copy Diagram

tbd

Store Last Used Toolbar

tbd

Drag Relation Ends

tbd

Overview of Keyboard Qualifiers

tbd

Overview of Diagram Element Alignment

tbd

Screenshots

ModelEditor with toolbar, class diagram, model tree and selected element's properties

Several features help designing well structured diagrams easily:

• Create a "Boundary" box with a dotted border and a title. Everything within that box will move as a group if you drag the box.
• Use Shift-Click on a relation to create a new sampling point. Use Ctrl-Click on a sampling point to remove it again.
• Press Shift while dragging an association from a class to create a new sampling point. Drop association over same class to create a self-association.
• If possible the end-point of a relation is moved automatically to draw the line to its neighbored sampling point vertically or horizontally.

A package diagram

The depth of the elements on the diagram directly relates to the depth in the structured model. Elements stacked on other elements of same type are drawn in darker colors automatically.

A use-case diagram

The elements for use-case diagrams (and activity diagrams) are configured with icon and color using a simple def-file format.

Example:

Icon UseCase
    Title: "Use-Case"
    Elements: item
    Stereotype: 'usecase'
    Display: icon
    Width: 40
    Height: 20
    BaseColor: #5fb4f0
Begin
    Ellipse 20, 10, 20, 10
End

With that def-file one can introduce new icons for stereotypes (e.g. the Entity, Boundary and Control icons for classes), new elements (e.g. the Use Case, Actor) or tool-bars.

An activities diagram

• Use multi-selection to align elements easily.
• Change color or stereotype of all selected elements simultaneously.

Add elements to model and diagrams

• Press one of the small buttons in the upper right toolbar to add a new element to the model
• Drag an icon from the toolbar to a diagram to create a new element
• Drag a model element from the model tree to a diagram to add the element and all its relations to the diagram.
• Drag a C++ source code from the project explorer to a diagram to add the file as a component or any of its declared classes.
• Drag one of the arrows right to a selected element to another element on the diagram to create a new relation

Element's properties in detail

• This is not standard UML: A namespace property
• The attributes and methods are written as C++ declarations.
• Only a few properties define the look of the elements: a color, a role and an extra enhancement flag.