Hi,
If I understand correctly, you want to resize the chart whenever the number
of rows displayed changes, so that each bar maintains the same thickness.
Right?
what about this:
- dashboard fires a 'ready' event whenever any part of it redraws (such as
the chart redrawing because of a control change)
- you can always query a chartwrapper (or controlwrapper) and ask it for the
datatable it received in its last draw (via chartWrapper.getDataTable())
so you could add a 'ready' event listener to the dashboard and resize the
chart whenever its size is not the one you want:
...
var dash = new
google.visualization.Dashboard(document.getElementById('dashboard'));
google.visualization.events.addListener(dash, 'ready', function() {
// Dashboard redraw, have a look at how many rows the barChart is
displaying
var numRows = barChart.getDataTable().getNumberOfRows();
var expectedHeight = numRows * 60;
if (parseInt(barChart.getOption('height'), 10) != expectedHeight) {
// Update the chart options and redraw just it
barChart.setOption('height', expectedHeight);
barChart.draw();
}
});
dash.bind(...);
dash.draw(data);
I tried it briefly locally and it seems to work.
Mind that barChart.draw() triggers a dashboard 'ready' event too (since the
chart is part of the dashboard), so that if() statement that I added is
important to avoid entering an infinite loop where the 'ready' event handler
keeps calling itself.
/R.
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