Cursor does not change for color gestures if motion is vertical

[Alex Valavanis]

* Follow-up report for bug #943200 <Gdk-CRITICAL warnings when using color gestures>
* Inkscape 0.48+devel r11429
* Ubuntu Precise, amd64

To reproduce:
* Draw a shape
* Click and drag vertically from the Fill Indicator (as described in "Color Gestures" section in manual[1])
>> Mouse cursor does not change to the expected "+/-" symbol

If a horizontal drag motion is used, then the cursor *does* change correctly.

[1] http://tavmjong.free.fr/INKSCAPE/MANUAL/html/Attributes-Fill-Stroke.html

[Vladimir Savic (vladimir-firefly-savic)]

What might be added here, but doesn't relate to bug per se. Cursor fails to reflect keyboard modifier change.

[Cojnel (cojnel)]

r13033, linux mint 16 32bit

The Hue, Saturation, Lightness and Alpha cursors only seam to update,
when the cursor is moved over the fill style indicator in the bottom left corner.

[jazzynico (jazzynico)]

Decreasing the dragging distance seems to fix the bug (see patch attached). But I haven't tested how it affects other parts of the UI...

[Nathan Lee (nathan.lee)]

Closing as part of bug migration (https://alpha.inkscape.org/bug-migration/) to GitLab. The issue has been re-reported and can still be tracked in https://gitlab.com/inkscape/inbox/-/issues/3994 .