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window.onload = function () {
var dragger = function ()
{
curDrag = this;
this.ox = this.type == "rect" ? this.attr("x") : this.attr("cx");
this.oy = this.type == "rect" ? this.attr("y") : this.attr("cy");
},
move = function (dx, dy)
{
var att = this.type == "rect" ? { x: this.ox + dx, y: this.oy } : { cx: this.ox + dx, cy: this.oy };
this.attr(att);
r.safari();
},
collide = function (obj)
{
document.getElementById("debug").innerHTML = curDrag["id"] + " <-> " + obj["id"]
if (curDrag["grid"] > obj["grid"]) {
if (curDrag.getBBox().width < obj.getBBox().width &&
curDrag.getBBox().x > (obj.getBBox().x+obj.getBBox().width/3)) {
return;
}
att = { x: obj.attr("x")+curDrag.getBBox().width+margin };
obj.attr(att);
} else {
if (curDrag.getBBox().width < obj.getBBox().width &&
curDrag.getBBox().x < (obj.getBBox().x+obj.getBBox().width/3)) {
return;
}
att = { x: obj.attr("x")-(curDrag.getBBox().width+margin) };
obj.attr(att);
}
var tmp = curDrag["grid"];
curDrag["grid"] = obj["grid"];
obj["grid"] = tmp;
},
up = function ()
{
snapToGrid(this);
},
snapToGrid = function (obj)
{
// just x coord, y is fixed in drag
var d = 0;
for (var i = 0; i < 4; i++) {
obj = null
for (var j = 0; j < shapes.length; j++) {
obj = shapesById[j];
if (obj["grid"] == i)
break;
}
att = {x:d};
obj.animate(att,250);
d += obj.getBBox().width+margin;
}
},
widths = [ 10, 128, 30, 40 ],
r = Raphael("holder", widths[0]+widths[1]+widths[2]+widths[3]+3*margin, 100),
fix_y = 50,
margin = 10,
shapes = [
r.rect(0, fix_y, widths[0], 30, 0),
r.rect(widths[0]+margin, fix_y, widths[1], 30, 0),
r.rect(widths[0]+widths[1]+2*margin, fix_y, widths[2], 30, 0),
r.rect(widths[0]+widths[1]+widths[2]+3*margin, fix_y, widths[3], 30, 0),
],
colors = [ "#000", "#ccc", "#0f0", "#00f" ],
shapesById = {},
curDrag = null;
for (var i = 0; i < shapes.length; i++) {
shapes[i].attr({fill: colors[i], cursor: "move"});
shapes[i].drag(move, dragger, up).onDragOver( function(a) { collide(a);});
shapes[i]["id"] = i;
shapes[i]["grid"] = i;
shapesById[i] = shapes[i];
}
};
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