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Fix vertical alignment of legend labels (#4318)

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Ensure that disabled legend style is drawn in the center of the text and that the text is correctly centered in the box.
This commit is contained in:
Evert Timberg
2017-06-04 13:34:05 -04:00
committed by Simon Brunel
parent fd49ac9200
commit a9308301e3
1 changed files with 8 additions and 4 deletions
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12
src/plugins/plugin.legend.js
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@@ -320,7 +320,7 @@ module.exports = function(Chart) {
// Canvas setup
ctx.textAlign = 'left';
ctx.textBaseline = 'top';
ctx.textBaseline = 'middle';
ctx.lineWidth = 0.5;
ctx.strokeStyle = fontColor; // for strikethrough effect
ctx.fillStyle = fontColor; // render in correct colour
@@ -372,14 +372,18 @@ module.exports = function(Chart) {
ctx.restore();
};
var fillText = function(x, y, legendItem, textWidth) {
ctx.fillText(legendItem.text, boxWidth + (fontSize / 2) + x, y);
var halfFontSize = fontSize / 2;
var xLeft = boxWidth + halfFontSize + x;
var yMiddle = y + halfFontSize;
ctx.fillText(legendItem.text, xLeft, yMiddle);
if (legendItem.hidden) {
// Strikethrough the text if hidden
ctx.beginPath();
ctx.lineWidth = 2;
ctx.moveTo(boxWidth + (fontSize / 2) + x, y + (fontSize / 2));
ctx.lineTo(boxWidth + (fontSize / 2) + x + textWidth, y + (fontSize / 2));
ctx.moveTo(xLeft, yMiddle);
ctx.lineTo(xLeft + textWidth, yMiddle);
ctx.stroke();
}
};