JavaScript Tutorial/Dojo toolkit/Canvas Draw

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Create Ellipse

<html>
  <head>
    <script type="text/javascript">
      var djConfig = {
        baseScriptUri : "js/dojo/",
        parseOnLoad : true
      };
    </script>
    <script type="text/javascript" src="js/dojo/dojo/dojo.js"></script>
    <script>
      dojo.require("dojox.gfx");
      function testIt() {
        var s = dojox.gfx.createSurface("my", 320, 240);
         s.createEllipse({ cx : 160, cy : 190, rx : 30, ry : 40 }).setFill([0, 255, 0, 0.5]);
      }
    </script>
  </head>
  <body onLoad="testIt();">
        <div id="my"></div>
  </body>
</html>


Draw 3D ball

<html>
  <head>
    <script type="text/javascript">
      var djConfig = {
        baseScriptUri : "js/dojo/",
        parseOnLoad : true
      };
    </script>
    <script type="text/javascript" src="js/dojo/dojo/dojo.js"></script>
    <script>
      dojo.require("dojox.gfx");
      function testIt() {
        var s = dojox.gfx.createSurface("my", 320, 240);
         s.createCircle({ cx : 265, cy : 120, r : 40}).setFill(dojo.mixin(
            { type : "radial", cx : 250, cy : 90},
            { colors: [
              { offset: 0,   color: [255, 0, 0, 0] },
              { offset: 0.5, color: "red" },
              { offset: 1,   color: [0, 0, 255, 0] }
            ]}
          ));
      }
    </script>
  </head>
  <body onLoad="testIt();">
        <div id="my"></div>
  </body>
</html>


Draw line

<html>
  <head>
    <script type="text/javascript">
      var djConfig = {
        baseScriptUri : "js/dojo/",
        parseOnLoad : true
      };
    </script>
    <script type="text/javascript" src="js/dojo/dojo/dojo.js"></script>
    <script>
      dojo.require("dojox.gfx");
      function testIt() {
        var s = dojox.gfx.createSurface("my", 320, 240);
        s.createLine({x1:10,y1:10, x2:310,y2:230}).setStroke({color : "#ff0000"});
      }
    </script>
  </head>
  <body onLoad="testIt();">
        <div id="my"></div>
  </body>
</html>


Draw polygon

<html>
  <head>
    <script type="text/javascript">
      var djConfig = {
        baseScriptUri : "js/dojo/",
        parseOnLoad : true
      };
    </script>
    <script type="text/javascript" src="js/dojo/dojo/dojo.js"></script>
    <script>
      dojo.require("dojox.gfx");
      function testIt() {
        var s = dojox.gfx.createSurface("my", 320, 240);
        s.createPolyline([ {x:160,y:15}, {x:10,y:5},{x:210,y:65}, {x:160,y:15} ]).setFill([255, 0, 0, 1]);
      }
    </script>
  </head>
  <body onLoad="testIt();">
        <div id="my"></div>
  </body>
</html>


Draw rectangle

<html>
  <head>
    <script type="text/javascript">
      var djConfig = {
        baseScriptUri : "js/dojo/",
        parseOnLoad : true
      };
    </script>
    <script type="text/javascript" src="js/dojo/dojo/dojo.js"></script>
    <script>
      dojo.require("dojox.gfx");
      function testIt() {
        var s = dojox.gfx.createSurface("my", 320, 240);
        s.createRect({ x : 15, y : 80, width : 60, height : 80}).setStroke({color : "red"});
      }
    </script>
  </head>
  <body onLoad="testIt();">
        <div id="my"></div>
  </body>
</html>


Draw stroke

<html>
  <head>
    <script type="text/javascript">
      var djConfig = {
        baseScriptUri : "js/dojo/",
        parseOnLoad : true
      };
    </script>
    <script type="text/javascript" src="js/dojo/dojo/dojo.js"></script>
    <script>
      dojo.require("dojox.gfx");
      function testIt() {
        var s = dojox.gfx.createSurface("my", 320, 240);
        var txt = s.createText({x: 90, y: 130, text: "Text"});
        txt.setFont({family : "Times", size : "20pt", weight : "bold"});
        txt.setFill("yellow");
        txt.setStroke("red");
      }
    </script>
  </head>
  <body onLoad="testIt();">
        <div id="my"></div>
  </body>
</html>


Draw text

<html>
  <head>
    <script type="text/javascript">
      var djConfig = {
        baseScriptUri : "js/dojo/",
        parseOnLoad : true
      };
    </script>
    <script type="text/javascript" src="js/dojo/dojo/dojo.js"></script>
    <script>
      dojo.require("dojox.gfx");
      function testIt() {
        var s = dojox.gfx.createSurface("my", 320, 240);
        var txt = s.createText({x: 90, y: 130, text: "Text"});
        txt.setFont({family : "Times", size : "20pt", weight : "bold"});
      
        txt.setStroke("black");
      }
    </script>
  </head>
  <body onLoad="testIt();">
        <div id="my"></div>
  </body>
</html>


Fill text

<html>
  <head>
    <script type="text/javascript">
      var djConfig = {
        baseScriptUri : "js/dojo/",
        parseOnLoad : true
      };
    </script>
    <script type="text/javascript" src="js/dojo/dojo/dojo.js"></script>
    <script>
      dojo.require("dojox.gfx");
      function testIt() {
        var s = dojox.gfx.createSurface("my", 320, 240);
        var txt = s.createText({x: 90, y: 130, text: "Text"});
        txt.setFont({family : "Times", size : "20pt", weight : "bold"});
        txt.setFill("yellow");
        txt.setStroke("red");
      }
    </script>
  </head>
  <body onLoad="testIt();">
        <div id="my"></div>
  </body>
</html>


Shape rotation

<html>
  <head>
    <script type="text/javascript">
      var djConfig = {
        baseScriptUri : "js/dojo/",
        parseOnLoad : true
      };
    </script>
    <script type="text/javascript" src="js/dojo/dojo/dojo.js"></script>
    <script>
      dojo.require("dojox.gfx");
      function testIt() {
        var s = dojox.gfx.createSurface("my", 320, 240);
        var t = s.createPolyline([ {x:160,y:15}, {x:110,y:65},{x:210,y:65}, {x:160,y:15} ]).setFill([0, 255, 0, 1]);
        
                
        window.setInterval(function() {
          t.applyTransform(dojox.gfx.matrix.rotategAt(5, 155, 50));
        }, 100);
      }
    </script>
  </head>
  <body onLoad="testIt();">
        <div id="my"></div>
  </body>
</html>
Источник — «http://wbex.ru/index.php?title=JavaScript_Tutorial/Dojo_toolkit/Canvas_Draw&oldid=8563»