score:9

Accepted answer

finally i got it working.

used the following code in the oncomplete() function:

animation: {
    oncomplete: function () {
        var ctx = this.chart.ctx;
        ctx.font = chart.helpers.fontstring(chart.defaults.global.defaultfontfamily, 'normal', chart.defaults.global.defaultfontfamily);
        ctx.fillstyle = "black";
        ctx.textalign = 'center';
        ctx.textbaseline = 'bottom';

        this.data.datasets.foreach(function (dataset)
        {
            for (var i = 0; i < dataset.data.length; i++) {
                for(var key in dataset._meta)
                {
                    var model = dataset._meta[key].data[i]._model;
                    ctx.filltext(dataset.data[i], model.x, model.y - 5);
                }
            }
        });
    }
}

score:3

got it to work after some researching.

you have to set it after in the oncomplete event of the animation. the x, y values of the bars are stored in the model of the children (point, line, bar, whatever)

oncomplete: function () {
                var ctx = this.chart.ctx;
                ctx.font = chart.helpers.fontstring(chart.defaults.global.defaultfontfamily, 'normal', chart.defaults.global.defaultfontfamily);
                ctx.textalign = 'center';
                ctx.textbaseline = 'bottom';

                this.data.datasets.foreach(function (dataset) {
                    for (var i = 0; i < dataset.data.length; i++) {
                            console
                        var model = dataset._meta[0].dataset._children[i]._model;
                        ctx.filltext(dataset.data[i], model.x, model.y - 5);
                    }
                });               
            }

just the structure changed a little bit.

you can see it in this working jsfiddle


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