dragzoom: Add support for zooming out with right mouse drag

[GoogleCodeExporter]

Left to zoom in, right to zoom out. Makes sense :)

Currently dragging with the right mouse is the same as with the left.

The attached patch against r522 adds:
 * an option, 'opts_other.rightMouseZoomOutEnabled' which enables the
behaviour. Default is false (existing behavior)
 * if enabled, dragging with the right button tries to find a zoom level to
fit the current visible extent in the size of the dragged box. This is
'normal' behavior for a number of other mapping systems.

Original issue reported on code.google.com by robert.c...@gmail.com on 4 Feb 2008 at 2:59

Attachments:

• dragzoom.rightMouseOut.diff

[GoogleCodeExporter]

Original comment by lem...@gmail.com on 23 May 2008 at 4:13

• Added labels: Class-DragZoomControl

[GoogleCodeExporter]

Original comment by lem...@gmail.com on 23 May 2008 at 6:46

• Changed state: Accepted
• Added labels: Type-Patch
• Removed labels: Type-Defect

[GoogleCodeExporter]

Added in r608.

Original comment by lem...@gmail.com on 23 May 2008 at 4:43

• Changed state: Fixed