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<html>
<head>
<script>
Resizer.BDIAGONAL_TOP_LEFT = 0;
Resizer.BDIAGONAL_TOP_RIGHT = 1;
Resizer.BDIAGONAL_BOTTOM_LEFT = 2;
Resizer.BDIAGONAL_BOTTOM_RIGHT = 3;
Resizer.BLEFT = 4;
Resizer.BTOP = 5;
Resizer.BRIGHT = 6;
Resizer.BBOTTOM = 7;
Resizer.TIMER = 20;
function Resizer(element){
this.buildResizer(element);
}
Resizer.prototype = {
_displayStyleResize: function(element){
element.style.borderWidth = "8px";
element.style.borderColor = "blue";
element.style.borderStyle = "solid";
},
_hideStyleResize: function(element){
element.style.borderWidth = "";
element.style.borderColor = "";
element.style.borderStyle = "";
},
_setCursorPosition: function(e){
var resizer = this.onmousemove.resizer;
if (typeof e != "undefined" && e.pageX && e.pageY){
resizer.cursorPosition.x = e.pageX;
resizer.cursorPosition.y = e.pageY;
}else if (typeof event != "undefined" && event.x && event.y){
resizer.cursorPosition.x = event.x;
resizer.cursorPosition.y = event.y;
}
document.getElementById("spanX").innerHTML = resizer.cursorPosition.x;
document.getElementById("spanY").innerHTML = resizer.cursorPosition.y;
},
_attachBehaviourToEvent: function(func, obj){
func.resizer = obj;
return func;
},
_startTimer:function(direction, cursorX, cursorY){
if (this.isMouseDown){
var resizer = this;
this.resizeTimer = window.setTimeout(function(){resizer._resize(direction, cursorX, cursorY);}, Resizer.TIMER);
}
},
_stopTimer:function(e){
var resizer = this.onmouseup.resizer;
resizer.element.onmouseover = resizer._attachBehaviourToEvent(resizer._selectBorder, resizer);
resizer.element.onmouseout = resizer._attachBehaviourToEvent(resizer._deselectBorder, resizer);
window.clearTimeout(resizer.resizeTimer);
resizer.isMouseDown = false;
resizer.selectBorderTimer = window.setTimeout(function(){resizer._selectBorder(null);}, Resizer.TIMER);
},
_updateRealOffset: function(){
if (typeof this.element.clientWidth != "undefined" && this.currentWidth != this.element.offsetWidth){
this.correctBorder = this.element.offsetWidth - this.element.clientWidth;
}
},
_deselectBorder:function(){
var resizer = this.onmouseout.resizer;
if (resizer.isMouseDown) return false;
window.clearTimeout(resizer.selectBorderTimer);
resizer.element.style.cursor = "default";
},
_selectBorder: function(e){
var resizer = (typeof this.onmouseover == "undefined")?this:this.onmouseover.resizer;
var element = resizer.element;
//if (resizer.isMouseDown) return false;
var border = resizer.border;
var topp = resizer.currentTop;
var left = resizer.currentLeft;
var right = resizer.currentLeft + resizer.currentWidth + resizer.correctBorder;
var bottom = resizer.currentTop + resizer.currentHeight + resizer.correctBorder;
var x = resizer.cursorPosition.x;
var y = resizer.cursorPosition.y;
resizer.direction = -1;
if (x >= left && x <= right && y >= topp && y <= bottom ){
if (x <= left + border){
if (y <= topp + border){
//Diagonal Haut gauche
resizer.direction = Resizer.BDIAGONAL_TOP_LEFT;
element.style.cursor = "nw-resize";
}else if (y >= bottom - border) {
//Diagonal bas gauche
resizer.direction = Resizer.BDIAGONAL_BOTTOM_LEFT;
element.style.cursor = "sw-resize";
}else{
//gauche
resizer.direction = Resizer.BLEFT;
element.style.cursor = "w-resize";
}
}else if (x >= right - border){
if (y <= topp + border){
//Diagonal Haut droit
resizer.direction = Resizer.BDIAGONAL_TOP_RIGHT;
element.style.cursor = "ne-resize";
}else if (y >= bottom - border) {
//Diagonal bas droit
resizer.direction = Resizer.BDIAGONAL_BOTTOM_RIGHT;
element.style.cursor = "se-resize";
}else{
//droit
resizer.direction = Resizer.BRIGHT;
element.style.cursor = "e-resize";
}
}else if (y <= topp + border){
//haut
resizer.direction = Resizer.BTOP;
element.style.cursor = "n-resize";
}else if (y >= bottom - border){
//bas
resizer.direction = Resizer.BBOTTOM;
element.style.cursor = "s-resize";
}
}
if (resizer.direction == -1){
element.style.cursor = "default";
}
if (resizer.isMouseDown) return false;
resizer.selectBorderTimer = window.setTimeout(function(){resizer._selectBorder(null);}, Resizer.TIMER);
return false;
},
_initResize:function(e){
var resizer = this.onmousedown.resizer;
resizer.isMouseDown = true;
resizer.element.onmouseover = null;
resizer.element.onmouseout = null;
window.clearTimeout(resizer.selectBorderTimer);
resizer._resize(resizer.cursorPosition.x, resizer.cursorPosition.y);
},
_resize: function(cursorX, cursorY){
if (!this.isMouseDown || this.direction == -1) return false;
var x = this.cursorPosition.x;
var y = this.cursorPosition.y;
if (this.direction == Resizer.BLEFT || this.direction == Resizer.BDIAGONAL_TOP_LEFT || this.direction == Resizer.BDIAGONAL_BOTTOM_LEFT){
this.element.style.width = this.currentWidth += cursorX - x;
this.element.style.left = this.currentLeft = x - 3;
}
if (this.direction == Resizer.BRIGHT || this.direction == Resizer.BDIAGONAL_TOP_RIGHT || this.direction == Resizer.BDIAGONAL_BOTTOM_RIGHT){
this.element.style.width = this.currentWidth += x - cursorX;
}
if (this.direction == Resizer.BTOP || this.direction == Resizer.BDIAGONAL_TOP_RIGHT || this.direction == Resizer.BDIAGONAL_TOP_LEFT){
this.element.style.height = this.currentHeight += cursorY - y;
this.element.style.top = this.currentTop = y - 3;
}
if (this.direction == Resizer.BBOTTOM || this.direction == Resizer.BDIAGONAL_BOTTOM_RIGHT || this.direction == Resizer.BDIAGONAL_BOTTOM_LEFT){
this.element.style.height = this.currentHeight += y - cursorY;
}
this._startTimer(x, y);
},
startResize: function(){
this._displayStyleResize(this.element);
this.element.style.position = "absolute";
this._updateRealOffset();
document.onmousemove = this._attachBehaviourToEvent(this._setCursorPosition, this);
document.onmouseup = this._attachBehaviourToEvent(this._stopTimer, this);
document.onmousedown = this._attachBehaviourToEvent(this._initResize, this);
this.element.onmouseover = this._attachBehaviourToEvent(this._selectBorder, this);
this.element.onmouseout = this._attachBehaviourToEvent(this._deselectBorder, this);
},
stopResize: function(){
this._hideStyleResize(this.element);
document.onmousedown = null;
document.onmousemove = null;
document.onmouseup = null;
},
toggleResize: function(){
if (this.isStarted){
this.stopResize();
}else{
this.startResize();
}
this.isStarted = !this.isStarted;
},
displayCurrentPosition: function(){
alert("X --> " + this.resizer.cursorPosition.x + " Y --> " + this.resizer.cursorPosition.y);
},
buildResizer: function(element){
this.element = element;
this.isStarted = false;
this.cursorPosition = {x:0, y:0};
this.border = 11;
this.resizeTimer = null;
this.selectBorderTimer = null;
this.isMouseDown = false;
this.currentWidth = element.offsetWidth;
this.currentHeight = element.offsetHeight;
this.currentTop = element.offsetTop;
this.currentLeft = element.offsetLeft;
this.correctBorder = 0; //for ie
this.direction = -1;
element.resizer = this;
element.isResizerInitialized = true;
}
}
function resize(element){
if (!element.isResizerInitialized){
new Resizer(element);
}
element.resizer.startResize();
}
</script>
<style>
.maDiv{
width:200px;
height:200px;
border-width : 1px;
border-style : solid;
border-color : green;
}
</style>
</head>
<body>
<div>X:<span id="spanX"></span> Y:<span id="spanY"></span></div>
<div>MOUSEDOWN X:<span id="spanXMD"></span> Y:<span id="spanYMD"></span></div>
<div>DIRECTION:<span id="spanDir"></span></div>
<div>Width:<span id="spanWidth"></span> Height:<span id="spanHeight"></span> DiffX:<span id="spanDiffX"></span> DIFFY:<span id="spanDiffY"></span></div>
<div id="maDiv" class="maDiv"></div>
<button onclick="resize(document.getElementById('maDiv'));">resize</button>
<button onclick="alert(document.getElementById('maDiv').style.width);">offset</button>
</body>
</html> |
