Is there any way to colorize only part of image on hover?

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情深已故
情深已故 2021-02-06 18:51

I would love to code simple image painting in HTML, CSS and probably jQuery also.

Let\'s say I have a original image, and I want make it colorized but only in part of ho

4条回答
  •  醉梦人生
    2021-02-06 19:09

    You could do this using svg's mask and filter.

    CodePen

    var img = document.getElementById('img');
    img.addEventListener('mousemove', function(e) {
      document.getElementById('c').setAttribute('cx', e.clientX - img.getBoundingClientRect().left);
      document.getElementById('c').setAttribute('cy', e.clientY - img.getBoundingClientRect().top);
    })
    
      
        
          
        
        
          
        
      
      
      
    


    You could also get a smooth transition on the circle edges by using radialGradient.

    CodePen

    enter image description here

    var img = document.getElementById('img');
    img.addEventListener('mousemove', function(e) {
      var x = e.clientX - img.getBoundingClientRect().left;
      var y = e.clientY - img.getBoundingClientRect().top;
      document.getElementById('r').setAttribute('fx', x);
      document.getElementById('r').setAttribute('fy', y);
      document.getElementById('r').setAttribute('cx', x);
      document.getElementById('r').setAttribute('cy', y);
    });
    
      
        
          
          
          
          
        
        
          
        
        
          
        
      
      
      
    

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