Method fit

src/plugins/plugin.legend.js:123–155

()

  }

  fit() {
    const {options, ctx} = this;

    // The legend may not be displayed for a variety of reasons including
    // the fact that the defaults got set to `false`.
    // When the legend is not displayed, there are no guarantees that the options
    // are correctly formatted so we need to bail out as early as possible.
    if (!options.display) {
      this.width = this.height = 0;
      return;
    }

    const labelOpts = options.labels;
    const labelFont = toFont(labelOpts.font);
    const fontSize = labelFont.size;
    const titleHeight = this._computeTitleHeight();
    const {boxWidth, itemHeight} = getBoxSize(labelOpts, fontSize);

    let width, height;

    ctx.font = labelFont.string;

    if (this.isHorizontal()) {
      width = this.maxWidth; // fill all the width
      height = this._fitRows(titleHeight, fontSize, boxWidth, itemHeight) + 10;
    } else {
      height = this.maxHeight; // fill all the height
      width = this._fitCols(titleHeight, labelFont, boxWidth, itemHeight) + 10;
    }

    this.width = Math.min(width, options.maxWidth || this.maxWidth);
    this.height = Math.min(height, options.maxHeight || this.maxHeight);
  }

  /**
	 * @private