Hi Nathan,
I typically work with a 1-button mouse or a stylus, so I don't have a
mouse wheel. I didn't know about the Page Up/Down, thanks for that tip!
Other navigating modes are by no means a high priority item. QGIS is a
spectacular program and is entirely useable as is.
The (minor) advantage of modifier-key driven shifts from cursor to pan
(hand) to zoom-in or zoom-out is that it allows one to maintain focus on
the image / cursor position while performing all the normal navigation
steps. Those accustomed to working in Photoshop or similar programs
develop habits - one hand on the mouse/stylus, the other manipulating
the modifier keys - which provide for a very smooth work flow.
Another advantage is that zooming can be set to center on the cursor
position - in effect combining a zoom with pan - which also helps
maintain focus on the area of interest. I have not yet checked if
Page Up/Down uses current cursor position to define the new center, but
it may.
I am sure there are many many much more important additions in progress,
but sometimes just having a concept "in the stack" makes it possible
to add a nice feature with little effort when working on something
more important in the same source code area...
Cordially,
Garth Fletcher
Mason, NH 03048
Nathan Woodrow wrote:
Hi,
In QGIS:
Space + move mouse is pan
Middle click mouse is always pan
Mouse wheel is always zoom.
Page Up/Down = Zoom In/Out
Not sure we need any other methods at this stage.
Regards,
Nathan
On Sat, Apr 16, 2016 at 12:49 AM, Garth Fletcher <[email protected]
<mailto:[email protected]>> wrote:
The approach I'm used to is widely used in Mac software, such
as Photoshop.
It allows one to dynamically navigate using the following key
combinations:
space bar with click & drag : pan (i.e., "hand tool")
space bar + Command key with click : zoom in centered on cursor
space bar + Option key with click : zoom out centered on cursor
It makes it very easy to navigate within an image. In most
software it also changes the cursor shape to provide feedback
as to its current mode.
One could use the Alt or Control keys on other systems.
In QGIS I've instead defined custom keystrokes to select the
3 tools - +mag, -mag and pan - but that is less efficient as
it requires the extra keystrokes.
Cordially
--
Garth Fletcher
Mason, NH 03048
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