contextPrototype.drawText_ = function()

in lnt/server/ui/static/flot/excanvas.js [1216:1303]

• 75 lines of code
• 18 McCabe index (conditional complexity)

  contextPrototype.drawText_ = function(text, x, y, maxWidth, stroke) {
    var m = this.m_,
        delta = 1000,
        left = 0,
        right = delta,
        offset = {x: 0, y: 0},
        lineStr = [];

    var fontStyle = getComputedStyle(processFontStyle(this.font),
                                     this.element_);

    var fontStyleString = buildStyle(fontStyle);

    var elementStyle = this.element_.currentStyle;
    var textAlign = this.textAlign.toLowerCase();
    switch (textAlign) {
      case 'left':
      case 'center':
      case 'right':
        break;
      case 'end':
        textAlign = elementStyle.direction == 'ltr' ? 'right' : 'left';
        break;
      case 'start':
        textAlign = elementStyle.direction == 'rtl' ? 'right' : 'left';
        break;
      default:
        textAlign = 'left';
    }

    // 1.75 is an arbitrary number, as there is no info about the text baseline
    switch (this.textBaseline) {
      case 'hanging':
      case 'top':
        offset.y = fontStyle.size / 1.75;
        break;
      case 'middle':
        break;
      default:
      case null:
      case 'alphabetic':
      case 'ideographic':
      case 'bottom':
        offset.y = -fontStyle.size / 2.25;
        break;
    }

    switch(textAlign) {
      case 'right':
        left = delta;
        right = 0.05;
        break;
      case 'center':
        left = right = delta / 2;
        break;
    }

    var d = this.getCoords_(x + offset.x, y + offset.y);

    lineStr.push('<g_vml_:line from="', -left ,' 0" to="', right ,' 0.05" ',
                 ' coordsize="100 100" coordorigin="0 0"',
                 ' filled="', !stroke, '" stroked="', !!stroke,
                 '" style="position:absolute;width:1px;height:1px;">');

    if (stroke) {
      appendStroke(this, lineStr);
    } else {
      // TODO: Fix the min and max params.
      appendFill(this, lineStr, {x: -left, y: 0},
                 {x: right, y: fontStyle.size});
    }

    var skewM = m[0][0].toFixed(3) + ',' + m[1][0].toFixed(3) + ',' +
                m[0][1].toFixed(3) + ',' + m[1][1].toFixed(3) + ',0,0';

    var skewOffset = mr(d.x / Z) + ',' + mr(d.y / Z);

    lineStr.push('<g_vml_:skew on="t" matrix="', skewM ,'" ',
                 ' offset="', skewOffset, '" origin="', left ,' 0" />',
                 '<g_vml_:path textpathok="true" />',
                 '<g_vml_:textpath on="true" string="',
                 encodeHtmlAttribute(text),
                 '" style="v-text-align:', textAlign,
                 ';font:', encodeHtmlAttribute(fontStyleString),
                 '" /></g_vml_:line>');

    this.element_.insertAdjacentHTML('beforeEnd', lineStr.join(''));
  };