How can I "unfill" a strokeRect ?


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Posted by Sudarshan on 28th April 2017
Hi Richard,

I am drawing bar chart if i am clicked on bar i am highlighting the bar with black colour by using this

         var top = shape[1];
         var left = shape[2];
         var width = shape[3];
         var height = shape[4];
         co.strokeStyle = 'black';
         co.fillStyle = 'black';
         co.strokeRect(top, left, width, height);
         co.fillRect(top, left, width, height);
if i am selected on bar it's turned in to black shape that's working fine if i am click on same (already bar filled with black colour )bar how can i remove this black colour is there any option to unfill the colour i am using the colour sequential true so how can i solve this problem

Thank you
Sudarshan
Posted by Richard on 28th April 2017
Hi there,

Something like this example?

www.rgraph.net/tests/bar-multiple-select.html




Richard
Posted by Sudarshan on 28th April 2017
Hi Richard,

I am already used the above example it's working fine but if i selected one bar the border is highlighting
in that i wrote my another function to generate other charts the bar is on selection mode if i clicked on another canvas also the same function is calling if i clicked on any canvas it's going to the function may with that on draw function how can i solve this issue.
Posted by Richard on 28th April 2017
Hi there,

Sorry I can't tell what you're saying. Try posting a link to an example page.






Richard
Posted by Jhon on 30th April 2017
Hi Richard,

<html><head>
     <meta name="robots" content="noindex">
    
     <script src="RGraph.common.core.js"></script>
     <script src="RGraph.common.dynamic.js"></script>
     <script src="RGraph.bar.js"></script>
</head>
<body>
     <canvas id=cvs1></canvas>
     <div id="cvs_rgraph_domtext_wrapper" class="rgraph_domtext_wrapper" style="overflow: visible; width: 600px; height: 250px; display: inline-block; position: relative;"><canvas id="cvs" width="600" height="250" style="border: 1px solid rgb(204, 204, 204); position: absolute; left: 0px; top: 0px; display: inline; float: none; cursor: default;">[No canvas support]</canvas><span id="300_6__cvs" style="position: absolute; display: inline; left: 301px; top: 6.048px; color: rgb(0, 0, 0); font-family: &quot;Segoe UI&quot;, Arial, Verdana, sans-serif; font-weight: bold; font-style: normal; font-size: 14pt; white-space: nowrap; text-shadow: rgba(0, 0, 0, 0) 0px 0px 0px; pointer-events: auto; text-align: center;"></span><span id="20_181_2_cvs" style="position: absolute; display: inline; left: 11.0667px; top: 173.448px; color: rgb(0, 0, 0); font-family: &quot;Segoe UI&quot;, Arial, Verdana, sans-serif; font-weight: normal; font-style: normal; font-size: 12pt; white-space: nowrap; text-shadow: rgba(0, 0, 0, 0) 0px 0px 0px; pointer-events: auto; text-align: right;">2</span><span id="20_142_4_cvs" style="position: absolute; display: inline; left: 11.0667px; top: 134.136px; color: rgb(0, 0, 0); font-family: &quot;Segoe UI&quot;, Arial, Verdana, sans-serif; font-weight: normal; font-style: normal; font-size: 12pt; white-space: nowrap; text-shadow: rgba(0, 0, 0, 0) 0px 0px 0px; pointer-events: auto; text-align: right;">4</span><span id="20_103_6_cvs" style="position: absolute; display: inline; left: 11.0667px; top: 94.824px; color: rgb(0, 0, 0); font-family: &quot;Segoe UI&quot;, Arial, Verdana, sans-serif; font-weight: normal; font-style: normal; font-size: 12pt; white-space: nowrap; text-shadow: rgba(0, 0, 0, 0) 0px 0px 0px; pointer-events: auto; text-align: right;">6</span><span id="20_64_8_cvs" style="position: absolute; display: inline; left: 11.0667px; top: 55.512px; color: rgb(0, 0, 0); font-family: &quot;Segoe UI&quot;, Arial, Verdana, sans-serif; font-weight: normal; font-style: normal; font-size: 12pt; white-space: nowrap; text-shadow: rgba(0, 0, 0, 0) 0px 0px 0px; pointer-events: auto; text-align: right;">8</span><span id="20_25_10_cvs" style="position: absolute; display: inline; left: 2.0667px; top: 16.2px; color: rgb(0, 0, 0); font-family: &quot;Segoe UI&quot;, Arial, Verdana, sans-serif; font-weight: normal; font-style: normal; font-size: 12pt; white-space: nowrap; text-shadow: rgba(0, 0, 0, 0) 0px 0px 0px; pointer-events: auto; text-align: right;">10</span><span id="20_220_0_cvs" style="position: absolute; display: inline; left: 11.0667px; top: 212.76px; color: rgb(0, 0, 0); font-family: &quot;Segoe UI&quot;, Arial, Verdana, sans-serif; font-weight: normal; font-style: normal; font-size: 12pt; white-space: nowrap; text-shadow: rgba(0, 0, 0, 0) 0px 0px 0px; pointer-events: auto; text-align: right;">0</span></div>
    
     <script>
         state = {
             selected: []
         };

         bar = new RGraph.Bar({
             id: 'cvs',
             data: [4,8,6,3,5,6,8,9],
             options: {
             }
         }).draw().on('mousemove', function (e, shape)
         {
             return true;
         }).draw().on('click', function (e, shape)
         {
             state.selected[shape.index] = state.selected[shape.index] ? false : true;
             RGraph.redraw();
         }).on('draw', function (obj)
         {
           console.log("click event fires on canvas");
             for (var i=0; i<obj.data.length; ++i) {
                 if (state.selected[i]) {
                
                     var coords = obj.coords[i];
                
                     RGraph.path2(
                         obj.context,
                         'lw 3 b r % % % % f rgba(255,255,255,0.8) s #a00 lw 1',
                         coords[0],
                         coords[1],
                         coords[2],
                         coords[3]
                     );
                 }
             }
         });
     </script>
<script>
   var bar = new RGraph.Bar({
             id: 'cvs1',
             data: [12,13,16,15,16,19,19,12,23,16,13,24],
             options: {
                 textAccessible: true,
                 gutterTop: 35,
                 gutterLeft: 35,
                 title: 'A basic chart',
                 labels: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec']
             }
         }).draw();
</script>

</body></html>

plese use this code in this exmple i am added two canvases cvs and cvs1 i drawn onclick function for the cvs not for the   cvs1 but i am clicked on any canvas the console is printing how can i solve this issue
Posted by Richard on 30th April 2017
Hi there,

Is this related to the other message that I've responded to?


Richard

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