aaac7fed
 liuqimichale
add
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var textHelper = require("../helper/text");
var BoundingRect = require("../../core/BoundingRect");
/**
* Mixin for drawing text in a element bounding rect
* @module zrender/mixin/RectText
*/
var tmpRect = new BoundingRect();
var RectText = function () {};
RectText.prototype = {
constructor: RectText,
/**
* Draw text in a rect with specified position.
* @param {CanvasRenderingContext2D} ctx
* @param {Object} rect Displayable rect
*/
drawRectText: function (ctx, rect) {
var style = this.style;
rect = style.textRect || rect; // Optimize, avoid normalize every time.
this.__dirty && textHelper.normalizeTextStyle(style, true);
var text = style.text; // Convert to string
text != null && (text += '');
if (!textHelper.needDrawText(text, style)) {
return;
} // FIXME
// Do not provide prevEl to `textHelper.renderText` for ctx prop cache,
// but use `ctx.save()` and `ctx.restore()`. Because the cache for rect
// text propably break the cache for its host elements.
ctx.save(); // Transform rect to view space
var transform = this.transform;
if (!style.transformText) {
if (transform) {
tmpRect.copy(rect);
tmpRect.applyTransform(transform);
rect = tmpRect;
}
} else {
this.setTransform(ctx);
} // transformText and textRotation can not be used at the same time.
textHelper.renderText(this, ctx, text, style, rect);
ctx.restore();
}
};
var _default = RectText;
module.exports = _default;
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