When a Blockly workspace has not been rendered for the first time,
e.g. due to Firefox SVG exceptions, the comment bubbles do not have a
canvas to attach to. This fix sets a `visible` field on the comment
object during load of a Blockly workspace that can be used to trigger
an SVG update once the workspace has been rendered.
* 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
* Move the call to disable resize before placeNewBlock so that it is off when workspace resizeContents
gets triggered by placeNewBlock. This fixes a bug in rtl mode where the workspace was being resized
between when the block was added to the workspace and when it was moved to the proper location.
* 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.
This commit removes AI2 specific code for the context menu and
replaces it with a customization callback that can be overriden by
Blockly customization.
Existing text-editable fields don’t care (dropdown care, but are not
text-editable). But a note picker needs to set its value to 60 if text
is set to ‘C4’.
* Adds message references to message string interpolation, in the form of %{BKY_STRING}.
* Re-adding CONTROLS_IFELSE block using the new syntax, referencing to CONTROL_IF equivalents.
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.
