wohlsoft / itemscene Goto Github PK

• Child objects and sub-trees (include of ability to create groups of elements)
• Implement Z-Order
• Implement hand-dragging
• Smooth Scrolling [Optionally]
• Apply zoom factor to scrolling speed (but, re-align camera on zoom change to avoid a broken alignment)
• Implement the "animated items" render scheme where visible surface will be updated often.
• Replace QList container with PtrList to guarantee same pointer address in the memory. Instead of this, QSet was used inside of tree to hold dynamically allocated items.
• Allow polymorphism for PGE_EditSceneItem to allow different item types.
• Implement collision check callback called on move or mouse release by optional choose
• Implement background and foreground render callbacks (to fill empty surface with something or draw the grid or any overground meta-signs or animations)

Title says almost all.

Also I am suggesting to add bottom status bar entry showing total number of elements selected.

1. Drag multiple items at once with rectangle selection.
2. Clear selection by clixking on empty spot.
3. Try to drag any singular item.
   We get this: