WIP: Replace definition of GUI via code with the loading of a UI file

[hasecilu]

I mentioned once that could be useful to invoke the GUI from an actual UI file instead of having all deinfed via code because it would make the code easier to read and find important function, the code have more than 4500 loc which for a single file seems to much.

This PR introduces the use of a UI file by adding a new button in the PieMenu settings dialog (for testing purposes), the idea is to explore if is convenient that the DialogTest() class replace a lot of loc on the InitGui.py file (still not done).

Most of the UI elements have same name, string and tooltips as in the code but could be that some are wrong, need to check.

Anyway, this is still not finished:

• [ ] Add options to Comboboxes
• [ ] Change some resizing policies
• [ ] Make all set/get methods work on UI
• [ ] I don't know if is possible to declare in the UI file the name of the method that will be executed when pressing the buttons, if not, we would need to be manually connect them
• [ ] In the UI the icons are set using relative paths and seems to be fine on Qt5 Designer but when invoking the GUI on FreeCAD icons are note there =(, if is not fixed all icons would need to be manually assigned

                <property name="icon">
                 <iconset>
                  <normaloff>../icons/PieMenu_Logo.svg</normaloff>../icons/PieMenu_Logo.svg</iconset>
                </property>

UI elements hierarchy

graph LR
    A[preferencesWidget\nLayout: QVBoxLayout]
    A --> C[piemenuWidget\nLayout: QHBoxLayout]
    A --> D[vSplitter - QSplitter]
    D --> E[tabs]
    D --> F[toolBarTab\nLayout: QVBoxLayout\nText: Toolbars]
    D --> G[pieButtons\nLayout: QVBoxLayout]
    D --> H[showPiemenu\nLayout: QVBoxLayout]
    C --> I[piemenuBoxGroup\nLayout: QHBoxLayout]
    C --> J[`**buttonBackToSettings**`\nText: Return to setings...]
    I --> L[**buttonExistingToolBar**\nText: Workbenches toolbars...]
    E --> M[piemenuTab\nText: PieMenu]
    E --> N[widgetContainer\nText: Tools]
    E --> Ñ[contextTab\nText: Context]
    E --> O[settingsTab\nText: Settings]
    G --> P[buttonListWidget - QTableWidget\nHeader: Shortcut, Action]
    H --> Q[buttonListWidget - QTableWidget\nHeader: Preview]

    ZS[pieMenuDialogLayout \nLayout: QVBoxLayout]
    ZS --> A
    ZS --> ZU[button_layout\nLayout: QVBoxLayout]
    ZU --> ZV[layoutInfoShortcut\nLayout: QHBoxLayout]
    ZV --> ZT[infoShortcut  QLabel\nText: void]
    ZU --> ZZ[button_row_layout\nLayout: QHBoxLayout]
    ZZ --> ZY[info_button\nText: About]
    ZZ --> ZX[close_button\nText: Close]
    ZZ --> ZWW[doc_button\nText: Documentation]

    I --> YO[layoutAddRemove \nLayout: QVBoxLayout]
    YO --> YP[buttonIconPieMenu\nTooltip: Set icon to ...]
    YO --> YQ[cBox\nUsed to select menu]
    YO --> YR[buttonAddPieMenu]
    YO --> YS[buttonRemovePieMenu]
    YO --> YT[buttonRenamePieMenu]
    YO --> YU[buttonCopyPieMenu ]
    YO --> YV[buttonExistingToolBar ]

[Grubuntu]

Congratulations for all this work. Unfortunately I don't use QtDesigner, and I don't really have time to learn new software at the moment so I can't help you in this development.

When you are ready we will push this code. Thanks for your work.

[hasecilu]

Basically for now the UI file still needs some tweaks and I would need to connect all the events. I'll try to finish before 1.0.

I just have a doubt regarding tabToolBar QTabWidget, is it planned to be used later or can be removed? It seems unused.

    tabToolBar = QtGui.QTabWidget()

    toolBarTab = QtGui.QWidget()
    toolBarTab.setLayout(toolBarTabLayout)

    tabToolBar.addTab(toolBarTab, translate("ToolBarsTab", "ToolBars")) # used but never called

    vSplitter = QtGui.QSplitter()
    vSplitter.insertWidget(1, tabs)
    vSplitter.insertWidget(2, toolBarTab)
    ...

[Grubuntu]

EDIT : !!! I didn't check it properly : 'tabToolBar' and 'toolBarTab' are necessary, you should not delete it. !!!

[Grubuntu]

I just have a doubt regarding tabToolBar QTabWidget, is it planned to be used later or can be removed? It seems unused.

Sorry, I didn't check it properly : 'tabToolBar' and 'toolBarTab' are necessary, you should not delete it.

[hasecilu]

Ok I'll add it, I've been busy on other FreeCAD things so I don't think will be changes soon.

Meanwhile if there are things you want to change of the wiki page let me know, if UI is not changing soon images can be updated.