* Add block drag surface translateSurfaceBy
* Add dragged connection manager
* Add gesture.js
* Add GestureHandler
* Implemented gesture skeleton
* Most basic workspace dragging
* Add dragged connection manager
* cleanup
* doc
* more cleanup
* Add gesture handler
* Add translateSurfaceInternal
* core/block_dragger.js
* cleanup
* Pull in changes to dragged connection manager
* Pull in changes to dragged connection manager
* comments
* more annotations
* Add workspace dragger
* Add coordinate annotations
* Start on block dragging
* Limit number of concurrent gestures
* Add some TODOs
* start using dragged connection manager
* Set origin correctly for dragging blocks
* Connect or delete at the end of a block drag.
* cleanup
* handle field clicks and block + workspace right-clicks
* move code into BlockDragger class, but still reach into Gesture internals a lot
* Clean up block dragger
* Call blockDragger constructor with correct arguments
* Enable block dragging in a mutator workspace
* Add workspace dragger
* click todos
* Drag flyout with background
* more dragging from flyout
* nit
* fix dragging from flyouts
* Remove unused code and rename gestureHandler to gestureDB
* Rename gesture handler
* Added some jsdoc in gesture.js
* Update some docs
* Move some code to block_svg and clean up code
* Lots of coordinate annotations
* Fix block dragging when zoomed.
* Remove built files from branch
* More dragging work (#1026)
-- Drag bubbles while dragging blocks
-- Use bindEventWithChecks to work in touch on Android. Not tested anywhere else yet.
-- Handle dragging blocks while zoomed
-- Handle dragging blocks in mutators
-- Handle right-clicks (I hope)
-- Removed lots of unused code
* More dragging work (#1048)
- Removed gestureDB
- Removing uses of terminateDrag
- Cleaned up disposal code
* Dragging bugfixes (#1058)
- Get rid of flyout.dragMode_ and blockly.dragMode_
- Make drags from the flyout start from the top block in the group
- Block tooltips from being scheduled or shown during gestures
- Don't resize mutator bubbles mid-drag
* Fix events in new dragging (#1060)
* rebuild for testing
* unbuild
* Fix events
* rebuild
* Fix up cursors
* Use language files from develop
* Remove handled TODOS
* attempt to fix IE rerendering bug, and recalculate workspace positions on scroll
* Rebuild all the things
* Comment cleanup; annotations; delete unused variables.
* Cross browser friendly fix for #904. This calls blur and focus from workspace.markFocused and removes the event listener on focus events. markFocused is called from all of our mouse down handlers, which triggers the focus event leading to an infinite loop of focus. As far as I can tell, there are no uses of the focus handler that actually did anything for us.
* Add ability to add a class to a scrollbar so that different types of scrollbars can
be distinguished from each other. You used to be able to do this by looking at the parent
element but now all the scrollbars are siblings in the dom.
Also, use this new class to fix#816 so that layering of the flyout and workspace scrollbars
are done correctly.
* Add a workspace drag surface that blocks and bubble get moved to during a workspace drag.
The surface is translated using translate3d instead of svg's translate attribute so that
the browser does not have to repaint the entire workspace on every mouse move.
This is very similar to the block drag surface.
* Address code review comments
* add back hasClass_ utility removed in #748 and stop using contains since it is not supported in IE
* Split the scrollbar and flyout out into their own SVG elements. They
are siblings of the workpsace SVG. This paves the way to make performance
improvements to workspace dragging.
Before, touchpads would give "smoother" scrolling by delivering lots of
mousewheel events with small distance changes. Because the code only
looked at the sign of deltaY, ten 5px scrolls would zoom 10x more than
one 50px scroll.
This change makes zooming with a touchpad more like zooming with a
mousewheel. On my laptop, a full-scale zoom (fully out to fully in) was
about a 5mm finger movement before, and is now about 3cm.
Fixes#758.
Improve performance of block dragging. This is a backport of the block drag surface from scratch-blocks. At the beginning of a block drag, blocks get moved to a drag surface which then translates using translate3d to avoid repainting the entire svg on every mouse move. At the end of the drag, the blocks are dropped back in the svg in their new position.
