restore brush animation and correct height on resize

[gordonwoodhull]

In this example you can resize the browser window to test chart resizing:

http://127.0.0.1:8888/web/resizing/resizing-bar.html

The brush used to transition at the same speed as the chart; now it changes immediately. (This was the purpose of the doTransition argument to redrawBrush, used in drawChart.)

Also it seems to get the width right but height stays at the original height.

If you fix the onresize bug (thank you @kum-deepak!), this example works in 2.1: http://dc-js.github.io/dc.js/resizing/resizing-bar.html

[kum-deepak]

On to it :)

[kum-deepak]

Looks like I have to practice first some transition examples.

As of now I am able to handle the resizing correctly, animate the brush handles. Unable to animate the brush selection rectangle (it is done by d3.brush, but the documentation says that transitions can be applied on that).

[gordonwoodhull]

Don't you just pass a transition to _brush.move instead of a selection? That is sort of how it used to work, except that it was just something.call(_brush) before.

[kum-deepak]

I must be making some simple error. There is a sample as well where they animate the brush selection:
https://bl.ocks.org/mbostock/6232537 (similar to our rounding case)

I will commit one version later in the day my time.

[kum-deepak]

Started work #1402. Based on your feedback, I will implement for other classes as well.

[gordonwoodhull]

fixed in 3.0 alpha 7