Socis2015project3

[ajaskier]

Project3. Multi-label selecting. It's delivered with solutions from project1, because I find it more resonable, since project1 brings 'Pick' mode.

[ypnos]

Please incorporate the following changes:

• disable zoom/pan in ROIView (right now ROI selection is not usable)
• in ScaledView (not BandView) during panning the view is not updated. only after changing zoom level we see that panning was applied. The same is true when panning with the mouse outside of the pixmap in BandView. Fixing in ScaledView should probably fix both.
• when the ROI is changed (or on startup) the image is in the left-top corner and not zoomed to fill the view. but it should be centered and zoomed. Just what happens when "zooming out" one time with mouse wheel.
• during panning action change mouse cursor. use setCursor(Qt::ClosedHandCursor); and setCursor(Qt::ArrowCursor); on press/release of left mouse button respectively.

[ypnos]

In the LabelDock, the user can select several labels by using rectangle selection (keep left mouse button pressed and adjust a rectangle, all items under the rectangle make up the selection). This is not reflected however in our internally selected labels and leads to an inconsistent state.

Please also capture these selection changes to update internally selected labels.

[ypnos]

When at least one label is selected, and a new selection is initiated with mouse keep-left-pressed, rectangular selection, we observe weird behavior. First, all labels get deselected (expected), then after finishing the selection, one of the previously selected labels is suddenly selected again (additionally to the rectangular selection.

I wonder if we maybe drifted off a bit here. Can't we just let the view widget handle all kinds of (de)selections on its own and just keep track of the current selection? that means for example, that to select additional labels the ctrl or shift modifier keys need to be pressed. It would actually welcome if this list view behaves like list views normally would.

I suppose we ran into our current complicated setup for historical reasons (going from mouse-over-to-select to click-to-select). Maybe it is not too hard to have the listview to be genuine again? Please evaluate.