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gridruler.js
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function addGridRuler () {
var html = '<div id="grid-ruler" class="mira-p">' +
' <div id="grid-block-1"></div>' +
' <div id="grid-block-2"></div>' +
' <div id="grid-block-3"></div>' +
' <div class="controls">' +
' <a title="set block size" class="set-size">⤡</a>' +
' <a title="toggle color" class="color-toggle" title="toggle color">◐</a>' +
' <a title="toggle keyboard access" class="keylink">✚</a>' +
' </div>' +
'</div>' +
'<style>#grid-ruler{width:70px;height:60px;font-family:arial;font-size:0;position:fixed;top:0;left:0;z-index:9001;cursor:move;padding:10px 20px 40px;border-radius:10px;border:2px solid transparent;-webkit-transition:background .05s ease-in-out;-moz-transition:background .05s ease-in-out;transition:background .05s ease-in-out;-webkit-user-select:none;-moz-user-select:none}#grid-ruler,#grid-ruler *{box-sizing:content-box;-moz-box-sizing:content-box;-webkit-box-sizing:content-box}#grid-ruler div{position:absolute;left:50%}#grid-ruler #grid-block-1{width:10px;height:10px;bottom:80px;margin-left:-30px}#grid-ruler #grid-block-2{width:40px;height:40px;top:30px;margin-left:-20px}#grid-ruler #grid-block-3{width:20px;height:20px;margin-left:20px}#grid-ruler:hover .controls{opacity:1}#grid-ruler .controls{opacity:.25;background:rgba(100,100,100,.1);height:26px;position:absolute;width:100%;bottom:0;left:0;border-radius:13px;-webkit-transition:opacity .1s ease-in-out}#grid-ruler .controls a{width:26px;height:26px;display:block;position:absolute;color:#000;font-size:16px;line-height:26px;text-decoration:none;cursor:pointer;text-align:center}#grid-ruler .controls a:active{color:#31571b}#grid-ruler .color-toggle{left:0}#grid-ruler .set-size{margin-left:-12px;left:50%}#grid-ruler .keylink{right:0}#grid-ruler.dragged{border:2px dashed rgba(100,100,100,.5)}#grid-ruler.mira-p #grid-block-1{background-color:#db1d4d}#grid-ruler.mira-p #grid-block-2{background-color:#aac02c}#grid-ruler.mira-p #grid-block-3{background-color:#31571b}#grid-ruler.mira-t #grid-block-1{background-color:#f37621}#grid-ruler.mira-t #grid-block-2{background-color:#ebb927}#grid-ruler.mira-t #grid-block-3{background-color:#8c6239}</style>';
var newElement = document.createElement ('div');
newElement.innerHTML = html;
document.getElementsByTagName('body')[0].appendChild(newElement);
// document.write(html);
// console.log(document.getElementsByTagName('body')[0]);
}
function addEventSimple(obj,evt,fn) {
if (obj.addEventListener)
obj.addEventListener(evt,fn,false);
else if (obj.attachEvent)
obj.attachEvent('on'+evt,fn);
}
function removeEventSimple(obj,evt,fn) {
if (obj.removeEventListener)
obj.removeEventListener(evt,fn,false);
else if (obj.detachEvent)
obj.detachEvent('on'+evt,fn);
}
dragDrop = {
shiftDown: false,
keySpeed: 1, // pixels per keypress event
initialMouseX: undefined,
initialMouseY: undefined,
startX: undefined,
startY: undefined,
dXKeys: undefined,
dYKeys: undefined,
squares: undefined,
draggedObject: undefined,
initElement: function (element) {
if (typeof element == 'string')
element = document.getElementById(element);
element.onmousedown = dragDrop.startDragMouse;
var links = element.getElementsByTagName('a');
var dragToggle = links[links.length-1];
var colorToggle = links[links.length-2];
var askSize = links[links.length-3];
dragToggle.relatedElement = element;
dragToggle.onclick = dragDrop.startDragKeys;
colorToggle.onclick = dragDrop.toggleColor;
askSize.onclick = dragDrop.askSize;
},
toggleColor: function (e) {
// console.log(this.parentNode.parentNode.className);
if (this.parentNode.parentNode.className.indexOf('mira-p') != -1) {
this.parentNode.parentNode.className = this.parentNode.parentNode.className.replace(/mira-p/,'mira-t');
}
else if (this.parentNode.parentNode.className.indexOf('mira-t') != -1 ) {
this.parentNode.parentNode.className = this.parentNode.parentNode.className.replace(/mira-t/,'mira-p');
}
},
askSize: function (e) {
dragDrop.squares = new Array();
for (n = 0; n < 3; n++) {
dragDrop.squares[n] = prompt('Fill in a number in pixels (without a suffix)', '10');
while (isNaN(dragDrop.squares[n]) || dragDrop.squares[n] < 5 || dragDrop.squares[n] > 250) {
dragDrop.squares[n] = prompt('Fill in a number between 5 and 250', '10');
}
dragDrop.squares[n] = parseInt(dragDrop.squares[n], 10);
// console.log(document.getElementById('grid-block-'+ (n+1)));
}
console.log(dragDrop.squares);
function compare(a,b) {
return a - b;
}
dragDrop.squares.sort(function compareNumbers(a, b)
{
return a - b;
});
console.log(dragDrop.squares);
dragDrop.setSize();
},
setSize: function (e) {
document.getElementById('grid-block-1').style.width = dragDrop.squares[0] + 'px';
document.getElementById('grid-block-1').style.height = dragDrop.squares[0] + 'px';
document.getElementById('grid-block-1').style.marginLeft = '-' + ((dragDrop.squares[2] / 2) + dragDrop.squares[0]) + 'px';
document.getElementById('grid-block-1').style.bottom = (dragDrop.squares[2] + 40) + 'px';
document.getElementById('grid-block-2').style.width = dragDrop.squares[2] + 'px';
document.getElementById('grid-block-2').style.height = dragDrop.squares[2] + 'px';
document.getElementById('grid-block-2').style.marginLeft = '-' + (dragDrop.squares[2] / 2) + 'px';
document.getElementById('grid-block-2').style.top = (dragDrop.squares[1] + 10) + 'px';
document.getElementById('grid-block-3').style.width = dragDrop.squares[1] + 'px';
document.getElementById('grid-block-3').style.height = dragDrop.squares[1] + 'px';
document.getElementById('grid-block-3').style.marginLeft = (dragDrop.squares[2] / 2) + 'px';
// if ((dragDrop.squares[0] + dragDrop.squares[0] + dragDrop.squares[0]) < )
document.getElementById('grid-ruler').style.width = (dragDrop.squares[0] + dragDrop.squares[1] + dragDrop.squares[2]) + 'px';
document.getElementById('grid-ruler').style.height = (dragDrop.squares[1] + dragDrop.squares[2]) + 'px';
},
startDragMouse: function (e) {
dragDrop.startDrag(this);
var evt = e || window.event;
dragDrop.initialMouseX = evt.clientX;
dragDrop.initialMouseY = evt.clientY;
addEventSimple(document,'mousemove',dragDrop.dragMouse);
addEventSimple(document,'mouseup',dragDrop.releaseElement);
return false;
},
startDragKeys: function () {
dragDrop.startDrag(this.relatedElement);
dragDrop.dXKeys = dragDrop.dYKeys = 0;
addEventSimple(document,'keydown',dragDrop.dragKeys);
addEventSimple(document,'keyup',dragDrop.onKeyUp);
addEventSimple(document,'keypress',dragDrop.switchKeyEvents);
this.blur();
return false;
},
startDrag: function (obj) {
if (dragDrop.draggedObject)
dragDrop.releaseElement();
dragDrop.startX = obj.offsetLeft;
dragDrop.startY = obj.offsetTop;
dragDrop.draggedObject = obj;
obj.className += ' dragged';
},
dragMouse: function (e) {
var evt = e || window.event;
var dX = evt.clientX - dragDrop.initialMouseX;
var dY = evt.clientY - dragDrop.initialMouseY;
dragDrop.setPosition(dX,dY);
return false;
},
dragKeys: function(e) {
var evt = e || window.event;
var key = evt.keyCode;
switch (key) {
case 37: // left
case 63234:
dragDrop.dXKeys -= (this.shiftDown) ? 10 : dragDrop.keySpeed;
break;
case 38: // up
case 63232:
dragDrop.dYKeys -= (this.shiftDown) ? 10 : dragDrop.keySpeed;
break;
case 39: // right
case 63235:
dragDrop.dXKeys += (this.shiftDown) ? 10 : dragDrop.keySpeed;
break;
case 16:
this.shiftDown = true;
break;
case 40: // down
case 63233:
dragDrop.dYKeys += (this.shiftDown) ? 10 : dragDrop.keySpeed;
break;
case 13: // enter
case 27: // escape
dragDrop.releaseElement();
return false;
default:
return true;
}
dragDrop.setPosition(dragDrop.dXKeys,dragDrop.dYKeys);
if (evt.preventDefault) // also solves problem in Saf; keypress part of default ???
evt.preventDefault();
return false;
},
onKeyUp: function(e) {
var evt = e || window.event;
var key = evt.keyCode;
switch (key) {
case 16:
this.shiftDown = false;
break;
default:
return true;
}
if (evt.preventDefault) // also solves problem in Saf; keypress part of default ???
evt.preventDefault();
return false;
},
setPosition: function (dx,dy) {
dragDrop.draggedObject.style.left = dragDrop.startX + dx + 'px';
dragDrop.draggedObject.style.top = dragDrop.startY + dy + 'px';
},
switchColor: function () {
},
switchKeyEvents: function () {
// for Opera and Safari 1.3
removeEventSimple(document,'keydown',dragDrop.dragKeys);
removeEventSimple(document,'keyup',dragDrop.onKeyUp);
removeEventSimple(document,'keypress',dragDrop.switchKeyEvents);
addEventSimple(document,'keypress',dragDrop.dragKeys);
},
releaseElement: function() {
removeEventSimple(document,'mousemove',dragDrop.dragMouse);
removeEventSimple(document,'mouseup',dragDrop.releaseElement);
removeEventSimple(document,'keypress',dragDrop.dragKeys);
removeEventSimple(document,'keypress',dragDrop.switchKeyEvents);
removeEventSimple(document,'keydown',dragDrop.dragKeys);
removeEventSimple(document,'keyup',dragDrop.onKeyUp);
dragDrop.draggedObject.className = dragDrop.draggedObject.className.replace(/ dragged/,'');
dragDrop.draggedObject = null;
}
}
function initGrid() {
// '';
addGridRuler();
dragDrop.initElement(document.getElementById('grid-ruler'));
}
initGrid();