Function parsePlainText

libs/echarts/echarts.simple.js:7987–8031

* @public * @param {string} text * @param {string} font * @param {Object} [truncate] * @return {Object} block: {lineHeight, lines, height, outerHeight, canCacheByTextString} * Notice: for performance, do not calculate outerWidth util needed. * `canCacheByTextString` means the result `lines`

(text, font, padding, textLineHeight, truncate)

 *  without travel the result `lines`.
 */
function parsePlainText(text, font, padding, textLineHeight, truncate) {
    text != null && (text += '');

    var lineHeight = retrieve2(textLineHeight, getLineHeight(font));
    var lines = text ? text.split('\n') : [];
    var height = lines.length * lineHeight;
    var outerHeight = height;
    var canCacheByTextString = true;

    if (padding) {
        outerHeight += padding[0] + padding[2];
    }

    if (text && truncate) {
        canCacheByTextString = false;
        var truncOuterHeight = truncate.outerHeight;
        var truncOuterWidth = truncate.outerWidth;
        if (truncOuterHeight != null && outerHeight > truncOuterHeight) {
            text = '';
            lines = [];
        }
        else if (truncOuterWidth != null) {
            var options = prepareTruncateOptions(
                truncOuterWidth - (padding ? padding[1] + padding[3] : 0),
                font,
                truncate.ellipsis,
                {minChar: truncate.minChar, placeholder: truncate.placeholder}
            );

            // FIXME
            // It is not appropriate that every line has '...' when truncate multiple lines.
            for (var i = 0, len = lines.length; i < len; i++) {
                lines[i] = truncateSingleLine(lines[i], options);
            }
        }
    }

    return {
        lines: lines,
        height: height,
        outerHeight: outerHeight,
        lineHeight: lineHeight,
        canCacheByTextString: canCacheByTextString
    };
}

/**
 * For example: 'some text {a|some text}other text{b|some text}xxx{c|}xxx'