matiasgagliano/guillotine項目作爲香草JS

Question

有誰知道是否有一個偉大的斷頭臺項目的香草JS版本？

https://github.com/matiasgagliano/guillotine

我真的很喜歡這個東西是如何工作的方式，但我wan't使用它，而不包括jQuery的包。我已經想過重新混合這個項目（關於這個項目的原作者）並開啓一個新的回購。

也許這裏還有其他人在SOF做與我合作的事情。

在此先感謝您的任何想法/信息！

Answer 1

作爲一個mootools類，可能更接近於jQuery的香草。它的怪癖，這是一個急於工作，我沒有改善或重構。每次更新/更改數據（x，y，角度等）時觸發onChanged事件。

var guillotine = new Class({ 

Implements: [Options, Events], 

changed: function(){ 
    this.fireEvent('changed'); 
}, 

options : { 

test: 'whatever', 

defaults : { 
    width: 250, 
    height: 300, 
    zoomStep: 0.1, 
    init: null, 
    eventOnChange: null, 
    onChange: null 
} 


}, 

initialize : function(element, options) { 

    this.setOptions(options); 

    console.log(this.options.test); 

    this.img = $(element) 

    this.zoomInFactor = 1 + this.options.defaults.zoomStep; 
    this.zoomOutFactor = 1/this.zoomInFactor; 
    this.width = this.height = this.left = this.top = this.angle = this.myDragStart = this.myDragEnd = 0; 

    this.data = { 
     scale: 1, 
     angle: 0, 
     x: 0, 
     y: 0, 
     w: this.options.defaults.width, 
     h: this.options.defaults.height 
    }; 


    //set hardware acceleration on for the element given 
    this.img.setStyles({'-webkit-perspective': 1000, 'perspective': 1000, '-webkit-backface-visibility': 'hidden', 'backface-visibility': 'hidden' }); 



    //do the element creation 
    //wrap the existing img up in the new divs 


     if(this.img.get('tag') === 'img'){ 

      if (this.img.naturalWidth) { 
       width = this.img.naturalWidth; 
       height = this.img.naturalHeight; 

      } else { 
       this.img.addClass('guillotine-sample'); 
       width = this.img.width; 
       height = this.img.height; 
       this.img.removeClass('guillotine-sample'); 
      } 


     } else { 

     width = this.img.width; 
     height = this.img.height; 

     }; 

     //why do they create this ratio of widths 


     this.width = width/this.options.defaults.width; 
     this.height = height/this.options.defaults.height; 

     //so now we have the natural width of the image that is being used 
     //including the ratio 

     //this.img.width = width/this.options.defaults.width; 
     //this.img.height = height/this.options.defaults.height; 

     //new canvas element has to have the raio width * 100 % 

     this.canvas = new Element('div',{ 
      id: 'canvas', 
      'class': 'guillotine-canvas', 
      styles : { 
       width: (width/this.options.defaults.width) * 100 + '%', 
       height: (height/this.options.defaults.height) * 100 + '%', 
       top: 0, 
       left: 0 
      } 
     }).wraps(this.img.id); 

     this.window = new Element('div',{ 
      'class': 'guillotine-window', 
      styles : { 
       width: '100%', 
       height: 'auto', 
       'padding-top': this.options.defaults.height/this.options.defaults.width * 100 + '%' 
      } 
     }).wraps(this.canvas); 



     //setup the dragging of the canvas 

     this.myDrag = new Drag('canvas', { 

      snap: 0, 



      onComplete: function(el){ 

       //need the figures in percentages not the px 


       containerDimensions = this.window.getSize() 

       myLeft = el.getPosition(this.window).x/containerDimensions.x; 
       myTop = el.getPosition(this.window).y/containerDimensions.y; 

       this.offset(-myLeft, -myTop); 

       //this.canvas.setStyle('left' , (myLeft * 100) + '%') 
       //this.canvas.setStyle('top' , (myTop * 100) + '%') 


      }.bind(this) 
     });   

    this.fireEvent('imageChange', this.data); 
}, 

//functions 


fit : function(){ 

    var prevWidth, relativeRatio, newWidth, newHeight; 

    prevWidth = this.width; 

    relativeRatio = this.height/this.width 

    if (relativeRatio > 1) { 
     this.width = 1; 
     this.height = relativeRatio; 
     } else { 
     this.width = 1/relativeRatio; 
     this.height = 1; 
     } 


    this.canvas.setStyle('width' , (this.width * 100).toFixed(2) + '%'); 
    this.canvas.setStyle('height' , (this.height * 100).toFixed(2) + '%'); 

    //set the data container to the scale unit use the previous width above 

    this.offset((this.width - 1)/2, (this.height - 1)/2); 

    this.data.scale *= this.width/prevWidth; 

    this.fireEvent('changed'); 


}, 


zoom : function(direction) { 


    if(direction == 'in'){ 
     factor = this.zoomInFactor; 
    }else if(direction == 'out'){ 
     factor = this.zoomOutFactor; 
    } 


    if (factor <= 0 || factor === 1) { 
     return; 
    } 

    var w = this.width, h = this.height; 

    if (w * factor > 0 && h * factor > 0) { 
     //*= >> x = x * y 
     this.width *= factor; 
     this.height *= factor; 
     this.canvas.setStyle('width', (this.width * 100).toFixed(2) + '%'); 
     this.canvas.setStyle('height' , (this.height * 100).toFixed(2) + '%'); 
     //set the record transformations 
     this.data.scale *= factor; 
    } else { 
     this.fit(); 
     factor = this.width/w; 
    } 

    //now sort out the centre zoomStep 
    var left = (this.left + 0.5) * factor - 0.5; 
    var top = (this.top + 0.5) * factor - 0.5; 

    this.offset(left,top); 


}, 

rotate : function(angle) { 

    var canvasRatio, glltRatio, h, w, _ref, _ref1, _ref2; 


    //check if angle is a 90 degree unit 
    if (!(angle !== 0 && angle % 90 === 0)) { 
    return; 
    } 


    this.angle = (this.angle + angle) % 360; 

    if (this.angle < 0) { 
    this.angle = 360 + this.angle; 
    } 

    if (angle % 180 !== 0) { 

    glltRatio = this.options.defaults.height/this.options.defaults.width; 

    _ref = [this.height * glltRatio, this.width/glltRatio], this.width = _ref[0], this.height = _ref[1]; 

    if (this.width >= 1 && this.height >= 1) { 
     this.canvas.setStyle('width' , this.width * 100 + '%'); 
     this.canvas.setStyle('height' , this.height * 100 + '%'); 
    } else { 
     this.fit(); 
    } 
    } 


    _ref1 = [1, 1], w = _ref1[0], h = _ref1[1]; 

    if (this.angle % 180 !== 0) { 
    canvasRatio = this.height/this.width * glltRatio; 
    _ref2 = [canvasRatio, 1/canvasRatio], w = _ref2[0], h = _ref2[1]; 
    } 

    this.img.setStyles({ 
     'width' : w * 100 + '%', 
     'height' : h * 100 + '%', 
     'left' : (1 - w)/2 * 100 + '%', 
     'top' : (1 - h)/2 * 100 + '%', 
     transform : 'rotate(' + this.angle + 'deg)' 
    }) 

    this.data.angle = this.angle; 

    this.center(); 



}, 



center : function() { 
    this.offset((this.width - 1)/2, (this.height - 1)/2); 
}, 



offset : function(left,top) { 

    if (left || left === 0) { 
     if (left < 0) { 
      //I HAVE REMOVED THIS SO THAT WE CAN MOVE A SHRUNKEN IMAGE AROUND 
      //left = 0; 
     } 
     if (left > this.width - 1) { 
      //I HAVE REMOVED THIS SO THAT WE CAN MOVE A SHRUNKEN IMAGE AROUND 
      //left = this.width - 1; 
     } 

     this.canvas.setStyle('left' , (-left * 100).toFixed(2) + '%'); 
     this.left = left; 
     this.data.x = Math.round(left * this.options.defaults.width); 

    } 


    if (top || top === 0) { 

     if (top < 0) { 
      //I HAVE REMOVED THIS SO THAT WE CAN MOVE A SHRUNKEN IMAGE AROUND 
      //top = 0; 
     } 
     if (top > this.height - 1) { 
      //I HAVE REMOVED THIS SO THAT WE CAN MOVE A SHRUNKEN IMAGE AROUND 
      //top = this.height - 1; 
     } 

     this.canvas.setStyle('top' , (-top * 100).toFixed(2) + '%'); 
     this.top = top; 
     this.data.y = Math.round(top * this.options.defaults.height); 
    } 

    this.fireEvent('changed'); 

}, 

getData : function() { 
    return this.data; 
} 

}）;