Shadow effect causes a bigger selection box, and resizing becomes irregular

[loke]

Hi. I am trying to use the Drop Shadow effect. The effect looks good, but it does not resize very well. The resizing box is far away from the limits of the object, and resizing is not regular. On resizing one end the other end moves as well, and disabling the effect in effect's editor and re-enabling after resizing works well, but that is just one way, not the way we would want it.

[su_v (suv-lp)]

Reproduced with Inkscape 0.46+devel r22566 on OS X 10.5.8

The anchor point for any re-size or scale transformation is outside of the object itself causing the visual part of the object to be translated in x and/or y direction in addition to the transformation by dragging the bounding box handles.

Note: changing the bbox setting to 'Geometric' restores the expected behavior when using the bbox selection handles for resizing and scaling, as does temporarily disabling the filter in the filter effects editor.

[su_v (suv-lp)]

another note: snapping to the grid - with bounding box mode set to 'Visual' - while resizing/scaling the filtered object also shows the correct behavior: the anchor point is fixed (snapped) to the current position while the object is scaled/resized by dragging one of the opposite selection box handles.

[Diederik van Lierop (mail-diedenrezi)]

@ ~suv, that's probably because you've enabled snapping of nodes, and not snapping of bounding boxes. When snapping nodes, Inkscape will always use the geometrical bbox because nodes are always in the middle of a stroke. In all other cases Inkscape will follow the preference set for the bbox, i.e. visual or geometric.

@ loke: The behavior you described in the first comment might be awkward, but at least it is consistent. If this is to be changed, then Inkscape should discard the filters when calculating the visual bounding box for transformations. In other cases, e.g. when exporting, the filters should still be included in the visual bounding box. The real bug here could be that the bbox is much too large. If it would tightly fit around the object and its applied filter then this behavior would not be as annoying I believe.

[su_v (suv-lp)]

@Diederik: confirmed - after toggling off node snapping Inkscape follows the bbox preference (set to 'Visual') and uses the edge/corner of the visual bbox as fixed anchor for resizing/scaling while the grid is visible.

[su_v (suv-lp)]

a) different bbox for transforms
> If this is to be changed, then Inkscape should discard
> the filters when calculating the visual bounding box
> for transformations.

b) imporved filter effects region
> The real bug here could be that the bbox is much too
> large. If it would tightly fit around the object and its
> applied filter then this behavior would not be as annoying

Changing Importance to Wishlist.