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Merge pull request #2680 from chartjs/fix/clipping

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Remove clipping and add plugin hooks.
This commit is contained in:
Evert Timberg 2016-06-02 20:35:39 -04:00
commit 829c2be2bc
2 changed files with 6 additions and 9 deletions
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5
docs/09-Advanced.md
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@ -399,7 +399,10 @@ Plugins should derive from Chart.PluginBase and implement the following interfac
// Easing is for animation
beforeDraw: function(chartInstance, easing) { },
afterDraw: function(chartInstance, easing) { }
afterDraw: function(chartInstance, easing) { },
// Before the datasets are drawn but after scales are drawn
beforeDatasetDraw: function(chartInstance, easing) { },
afterDatasetDraw: function(chartInstance, easing) { },
destroy: function(chartInstance) { }
}

10
src/core/core.controller.js
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@ -288,12 +288,7 @@ module.exports = function(Chart) {
this.scale.draw();
}
// Clip out the chart area so that anything outside does not draw. This is necessary for zoom and pan to function
var context = this.chart.ctx;
context.save();
context.beginPath();
context.rect(this.chartArea.left, this.chartArea.top, this.chartArea.right - this.chartArea.left, this.chartArea.bottom - this.chartArea.top);
context.clip();
Chart.pluginService.notifyPlugins('beforeDatasetDraw', [this, easingDecimal]);
// Draw each dataset via its respective controller (reversed to support proper line stacking)
helpers.each(this.data.datasets, function(dataset, datasetIndex) {
@ -302,8 +297,7 @@ module.exports = function(Chart) {
}
}, this, true);
// Restore from the clipping operation
context.restore();
Chart.pluginService.notifyPlugins('afterDatasetDraw', [this, easingDecimal]);
// Finally draw the tooltip
this.tooltip.transition(easingDecimal).draw();