2003-05-05  Pedro Gimeno  <pggimeno@wanadoo.es>

	* app/core/gimpdrawable-blend.c: Cleanups.
	(gradient_calc_linear_factor): Apply the gradient to both sides
	when Repeat is set to Sawtooth Wave. Fixes bug #112106.

	* app/core/gimpdrawable-transform.c
	(gimp_drawable_transform_tiles_affine): Fix copy'n'paste slip in
	coordinates calculation for supersampling code. Transform the
	pixel centers properly. Fixes bug #10466.

	* app/tools/gimpdrawtool.c (gimp_draw_tool_draw_rectangle,
	gimp_draw_tool_draw_arc): Ported the fix for bug #17904 from the
	STABLE branch (off-by-one when drawing the rectangle/ellipse
	previews).

	* app/tools/gimpeditselectiontool.c: Renamed
	gimp_edit_selection_tool_snap to
	gimp_edit_selection_tool_calc_coords, as it is no longer used for
	snapping.
	(gimp_edit_selection_tool_calc_coords): Use floor instead of
	rounding. Callers changed to remove rounding, as it deals with
	gdoubles directly. Thanks to Mitch for the help refining this
	one. Fixes bug #17906.