So far only 90 degree rotation is supported.
Only the image is currently being rotated.
Overlays, debugger, and the navigator still need to be updated to support rotation.
canvas pans when tap on touch screen
reason:
onTouchStart calls onMouseDown which registers 'mousemove' event handler.
when I tap on touch screen, even though browser did not dispatch 'touchmove' event, it dispatched 'mousemove' event.
therefore, the 'mousemove' handler pans canvas.
fix:
stop onTouchStart handler registering 'mousemove' handler as onMouseMove will be properly triggered by onTouchMove
(does not override the draw functionality).
Add an overlay option 'useTransform' that will transform the overlay
element instead of moving it's postion - useful for SVG elements
* Marked _showMessage/_hideMessage as private
* Fix DOM manipulation bug: call standard removeNode() method rather
than proprietary WebKit .remove()
* Change messageDiv to be the outer wrapper to simplify removing the
entire message container
* Use CSS display tables for vertical centering (tested back to IE8)
* Use the DOM instead of string concatenation
* Remove redundant styles ($.makeNeutralElement sets the same values
for margin, padding & border)
* Return the outer wrapper element to ease DOM addition & removal
This might be something we want to make configurable for users who want
to completely control how errors are displayed.
This also adds the first use of OpenSeadragon.makeCenteredNode currently
so we might want to clean up that code as well.
Setting onreadystatechange can avoid the possibility of it somehow being
called twice but there's no point in nulling the request right before we
let the GC collect it.
* Since async is always true – and browsers are starting to deprecate
synchronous XHR – we were able to prune considerable amount of code
* Add an error callback to match the existing success callback
