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    <h5>TouchPainter class</h5>
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    <h1>paint method</h1>

    <section class="multi-line-signature">
      <div>
        <ol class="annotation-list">
          <li>@override</li>
        </ol>
      </div>
      <span class="returntype">void</span>
      <span class="name ">paint</span>
(<wbr><span class="parameter" id="paint-param-canvas"><span class="type-annotation">Canvas</span> <span class="parameter-name">canvas</span>, </span> <span class="parameter" id="paint-param-size"><span class="type-annotation">Size</span> <span class="parameter-name">size</span></span>)
      
    </section>
    <section class="desc markdown">
      <p>Called whenever the object needs to paint. The given <code>Canvas</code> has its
coordinate space configured such that the origin is at the top left of the
box. The area of the box is the size of the <code>size</code> argument.</p>
<p>Paint operations should remain inside the given area. Graphical operations
outside the bounds may be silently ignored, clipped, or not clipped.</p>
<p>Implementations should be wary of correctly pairing any calls to
<code>Canvas.save</code>/<code>Canvas.saveLayer</code> and <code>Canvas.restore</code>, otherwise all
subsequent painting on this canvas may be affected, with potentially
hilarious but confusing results.</p>
<p>To paint text on a <code>Canvas</code>, use a <code>TextPainter</code>.</p>
<p>To paint an image on a <code>Canvas</code>:</p><ol><li>
<p>Obtain an <code>ImageStream</code>, for example by calling <code>ImageProvider.resolve</code>
on an <code>AssetImage</code> or <code>NetworkImage</code> object.</p></li><li>
<p>Whenever the <code>ImageStream</code>'s underlying <code>ImageInfo</code> object changes
(see <code>ImageStream.addListener</code>), create a new instance of your custom
paint delegate, giving it the new <code>ImageInfo</code> object.</p></li><li>
<p>In your delegate's <a href="ui_home_TouchPainter/TouchPainter/paint.html">paint</a> method, call the <code>Canvas.drawImage</code>,
<code>Canvas.drawImageRect</code>, or <code>Canvas.drawImageNine</code> methods to paint the
<code>ImageInfo.image</code> object, applying the <code>ImageInfo.scale</code> value to
obtain the correct rendering size.</p></li></ol>
    </section>
    
    <section class="summary source-code" id="source">
      <h2><span>Implementation</span> </h2>
      <pre class="language-dart"><code class="language-dart">@override
void paint(Canvas canvas, Size size) {
  int maxSize = 1100;
  int leftLine = 100;
  int rightLine = 950;

  void _drawCircle(int x, int y, Color v) {
    double xCircle;
    double yCircle;
    xCircle = x.toDouble() &#47; maxSize * size.width;
    yCircle = y.toDouble() &#47; maxSize * size.height;

    Paint line = Paint()
      ..color = v
      ..strokeCap = StrokeCap.round
      ..style = PaintingStyle.stroke
      ..strokeWidth = 4.0;
&#47;&#47;      print(&quot;C: $xCircle &#47; ${size.width}&quot;);
    canvas.drawCircle(Offset(xCircle, yCircle), 8.0, line);
  }

  void _drawSlider(int x, int y, Color v) {
    double topSlider = 65.0;
    double bottomSlider = 940.0;
    int sliderPercent;
    double range = bottomSlider - topSlider;
    double sliderPosition;
    double sliderValue;

    if (y &gt; topSlider) {
      sliderPosition = y - topSlider;
    } else {
      sliderPosition = 0;
    }
    sliderValue = sliderPosition &#47; range; &#47;&#47; 0...1

    sliderPercent = (sliderValue * 100).round(); &#47;&#47; %
    if (sliderPercent &gt; 100) sliderPercent = 100;
    if (sliderPercent &lt; 0) sliderPercent = 0;

&#47;*      print(&quot;range: $range&quot;);
    print(&quot;sliderPosition = $sliderPosition&quot;);
    print(&quot;%: $sliderValue&quot;);
    print(&quot;%R: $sliderPercent&quot;);*&#47;

    Paint line = Paint()
      ..color = v
      ..strokeCap = StrokeCap.round
      ..style = PaintingStyle.stroke
      ..strokeWidth = 5.0;
    var xLine = rightLine;
    var yLine = size.height * (y &#47; maxSize);
&#47;&#47;      print(&quot;$yLine &#47; ${size.height}&quot;);
    canvas.drawLine(

        &#47;&#47;&#47;Slider line
        Offset(xLine &#47; maxSize * size.width, yLine),
        Offset(
            (xLine + (maxSize - xLine) &#47; 1.2) &#47; maxSize * size.width, yLine),
        line);
    TextSpan percentage =
        new TextSpan(style: new TextStyle(color: v), text: &quot;$sliderPercent&quot;);
    TextPainter tp = new TextPainter(
        text: percentage,
        textAlign: TextAlign.left,
        textDirection: TextDirection.rtl);
    tp.layout();
    tp.paint(canvas,
        new Offset(rightLine &#47; maxSize * size.width - 50.0, yLine - 15.0));

  }


  touchCollection.forEach((k, v) {
&#47;&#47;      print(&quot;${k.f}  ${k.e}  ${k.x}  ${k.y}&quot;);
    if (k.x &lt;= 1023 &amp;&amp; k.y &lt; maxSize) {
      switch (k.e) {
        case 5:
          {
            break;
          }
        case 4:
          {
            continue move;
          }
        move:
        case 1:
          {


&#47;*              _drawCircle(0, maxSize, v); &#47;&#47;L U
            _drawCircle(0, 550, v); &#47;&#47; L M
            _drawCircle(0, 0, v); &#47;&#47; L O

            _drawCircle(550, 0, v); &#47;&#47; M O
            _drawCircle(550, 550, v); &#47;&#47; MITTE
            _drawCircle(550, maxSize, v); &#47;&#47; M U

            _drawCircle(maxSize, 0, v); &#47;&#47; R O
            _drawCircle(maxSize, 550, v); &#47;&#47; R M
            _drawCircle(maxSize, maxSize, v); &#47;&#47;R U*&#47;

&#47;&#47;          _drawCircle(175, 511, v); &#47;&#47; L M
&#47;&#47;          _drawCircle(850, 511, v); &#47;&#47; L M
&#47;&#47;              _drawCircle(180, 550, v); &#47;&#47; L M

            &#47;&#47;&#47; middle touch pad
            if (k.x &gt; leftLine &amp;&amp; k.x &lt; rightLine) {
              _drawCircle(k.x, k.y, v);
            }

            &#47;&#47;&#47; right slider
            else if (k.x &gt;= rightLine) {
              _drawSlider(k.x, k.y, v);
            }
            break;
          }
        default:
          {
            print(&quot;       W.T.F&quot;);
            print(&quot;tE: $k.e&quot;);
            break;
          }
      }
    }
  });
}</code></pre>
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