widgets.custom_qgraphicsscene

Custom QGraphicsScene used in the Design View.

author:

16. Savolainen (VTT)

date:

13.2.2019

Module Contents

class widgets.custom_qgraphicsscene.CustomQGraphicsScene(parent, toolbox)

Bases: PySide2.QtWidgets.QGraphicsScene

A scene that handles drag and drop events of DraggableWidget sources.

files_dropped_on_dc

connect_signals(self)

Connect scene signals.

resize_scene(self)

Resize scene to be at least the size of items bounding rectangle. Does not let the scene shrink.

scene_changed(self, rects)

Resize scene as it changes.

handle_selection_changed(self)

Synchronize selection with the project tree.

set_bg_color(self, color)

Change background color when this is changed in Settings.

Parameters:color (QColor) – Background color

set_bg_grid(self, bg)

Enable or disable background grid.

Parameters:bg (boolean) – True to draw grid, False to fill background with a solid color

dragLeaveEvent(self, event)

Accept event.

dragEnterEvent(self, event)

Accept event. Then call the super class method only if drag source is not a DraggableWidget (from Add Item toolbar).

dragMoveEvent(self, event)

Accept event. Then call the super class method only if drag source is not a DraggableWidget (from Add Item toolbar).

dropEvent(self, event)

Only accept drops when the source is an instance of DraggableWidget (from Add Item toolbar). Capture text from event’s mimedata and show the appropriate ‘Add Item form.’

drawBackground(self, painter, rect)

Reimplemented method to make a custom background.

Parameters:

• painter (QPainter) – Painter that is used to paint background
• rect (QRectF) – The exposed (viewport) rectangle in scene coordinates