dojox
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Dojo eXtensions, a rollup of many useful sub-projects and varying states of maturity – from very stable and robust, to alpha and experimental. See individual projects contain README files for details.
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HTML
<html>
<head>
<title>dojox.gfx: interactive analog clock</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<style type="text/css">
@import "../../../dojo/resources/dojo.css";
@import "../../../dijit/themes/dijit.css";
@import "../../../dijit/tests/css/dijitTests.css";
</style>
<script type="text/javascript" src="../../../dojo/dojo.js" data-dojo-config="parseOnLoad:true"></script>
<script type="text/javascript">
dojo.require("dijit._Widget");
dojo.require("dijit._Templated");
dojo.require("dojox.gfx");
dojo.require("dojo.date.locale");
dojo.declare("demo.Clock",dijit._Widget,{
time:"",
img:"images/clock_face_black.jpg",
postCreate:function(){
this.inherited(arguments);
if(!this.time){ this.current_time = new Date(); }else{
this.current_time = this.time;
}
dojo.mixin(this,{
diff_time: new Date(),
hour_hand:null,
hour_shadow:null,
hour_shadow_shift:{dx: 2, dy: 2},
minute_hand:null,
minute_shadow:null,
minute_shadow_shift:{dx: 3, dy: 3},
second_hand:null,
second_shadow:null,
second_shadow_shift:{dx: 4, dy: 4},
container_position: null
});
this._setSize();
this._init();
},
_setSize:function(){
this.container_position = dojo.coords(this.domNode, true);
this.mb = dojo.marginBox(this.domNode);
this.center = {
x: (this.mb.w / 2),
y: (this.mb.h / 2)
};
},
_init:function(){
this.surface = dojox.gfx.createSurface(this.domNode, this.mb.w, this.mb.h);
this.group = this.surface.createGroup();
this.group.createImage({
width: this.center.x * 2,
height:this.center.y * 2,
src: this.img
});
// hand shapes
var _off = 15;
var mar = ((this.mb.w / 2) - _off) * -1;
var _c = mar * 0.7; // -105;
var _a = mar * 0.5; //-60;
var _b = mar * 0.75; // -100;
var _d = mar * 0.8; // -116;
var _e = mar * 0.0523; // -7ish
var _f = mar * 0.042;
var _g = mar * 0.01234;
var hour_hand_points = [{x: _e, y: _off }, {x: _e * -1, y: _off }, {x: 0, y: _a }, {x: _e, y: _off }];
var minute_hand_points = [{x: _f, y: _off }, {x: _f * -1, y: _off }, {x: 0, y: _b }, {x: _f, y: _off }];
var second_hand_points = [
{x: _g, y: _off }, {x: _g * -1, y: _off }, {x: _g * -1, y: _c },
{x: _e * -1, y: _c }, {x: 0, y: _d }, {x: _e, y: _c },
{x: _g, y: _c }, {x: _g, y: _off }
];
// create shapes
this.hour_shadow = this.group.createPolyline(hour_hand_points)
.setFill([0, 0, 0, 0.1])
;
this.hour_hand = this.group.createPolyline(hour_hand_points)
.setStroke({color: "black", width: 2})
.setFill("#889")
;
this.minute_shadow = this.group.createPolyline(minute_hand_points)
.setFill([0, 0, 0, 0.1])
;
this.minute_hand = this.group.createPolyline(minute_hand_points)
.setStroke({color: "black", width: 2})
.setFill("#ccd")
;
this.second_shadow = this.group.createPolyline(second_hand_points)
.setFill([0, 0, 0, 0.1])
;
this.second_hand = this.group.createPolyline(second_hand_points)
.setStroke({color: "#800", width: 1})
.setFill("#d00")
;
this.group.createCircle({r: 1}).setFill("black").setTransform({dx: this.center.x, dy: this.center.y });
// start the clock
this.resetTime();
window.setInterval(dojo.hitch(this,"advanceTime"), 1000);
},
placeHand: function(shape, angle, shift){
var move = {dx: this.center.x + (shift ? shift.dx : 0), dy: this.center.y + (shift ? shift.dy : 0)};
return shape.setTransform([move, dojox.gfx.matrix.rotateg(angle)]);
},
placeHourHand: function(h, m, s){
var angle = 30 * (h % 12 + m / 60 + s / 3600);
this.placeHand(this.hour_hand, angle);
this.placeHand(this.hour_shadow, angle, this.hour_shadow_shift);
},
placeMinuteHand: function(m, s){
var angle = 6 * (m + s / 60);
this.placeHand(this.minute_hand, angle);
this.placeHand(this.minute_shadow, angle, this.minute_shadow_shift);
},
placeSecondHand:function(s){
var angle = 6 * s;
this.placeHand(this.second_hand, angle);
this.placeHand(this.second_shadow, angle, this.second_shadow_shift);
},
reflectTime: function(time, hold_second_hand, hold_minute_hand, hold_hour_hand){
if(!time){ time = this.current_time; }
var h = time.getHours();
var m = time.getMinutes();
var s = time.getSeconds();
if(!hold_hour_hand) this.placeHourHand(h, m, s);
if(!hold_minute_hand) this.placeMinuteHand(m, s);
if(!hold_second_hand) this.placeSecondHand(s);
this.text_time = dojo.date.locale.format(
time, {selector: "time", timePattern: "h:mm:ss a"}
);
},
resetTime: function(){
this.current_time = new Date();
this.reflectTime();
},
tick: function(){
this.current_time.setSeconds(this.current_time.getSeconds()+1);
this.reflectTime();
},
advanceTime: function(){
if(!this.selected_hand){
this.tick();
}
},
normalizeAngle: function(angle){
if(angle > Math.PI) {
angle -= 2 * Math.PI;
} else if(angle < -Math.PI) {
angle += 2 * Math.PI;
}
return angle;
},
calculateAngle: function(x, y, handAngle){
try {
return this.normalizeAngle(Math.atan2(y - this.center.y, x - this.center.x) - handAngle);
}catch(e){ /* suppress */ }
return 0;
},
getSecondAngle: function(time){
if(!time) time = this.current_time;
return (6 * time.getSeconds() - 90) / 180 * Math.PI;
},
getMinuteAngle: function(time){
if(!time) time = this.current_time;
return (6 * (time.getMinutes() + time.getSeconds() / 60) - 90) / 180 * Math.PI;
},
getHourAngle: function(time){
if(!time) time = this.current_time;
return (30 * (time.getHours() + (time.getMinutes() + time.getSeconds() / 60) / 60) - 90) / 180 * Math.PI;
},
resize: function(size){
this.surface.setDimensions(size.w, size.h);
this.group.setTransform(dojox.gfx.matrix.scale(size.w/this.mb.w, size.h/this.mb.h));
this._setSize();
}
});
dojo.declare("demo.InteractiveClock",demo.Clock,{
_init: function(){
this.inherited(arguments);
// attach events
this.diff_time = new Date();
this.hour_hand .connect("onmousedown", this,"onMouseDown");
this.minute_hand.connect("onmousedown", this,"onMouseDown");
this.second_hand.connect("onmousedown", this,"onMouseDown");
this.connect(this.domNode, "onmousemove", "onMouseMove");
this.connect(this.domNode, "onmouseup", "onMouseUp");
},
onMouseDown: function(evt){
this.selected_hand = evt.target;
this.diff_time.setTime(this.current_time.getTime());
dojo.stopEvent(evt);
},
onMouseMove: function(evt){
if(!this.selected_hand) return;
if(evt.target == this.second_hand.getEventSource() ||
evt.target == this.minute_hand.getEventSource() ||
evt.target == this.hour_hand.getEventSource()){
dojo.stopEvent(evt);
return;
}
if(dojox.gfx.equalSources(this.selected_hand, this.second_hand.getEventSource())){
var angle = this.calculateAngle(
evt.clientX - this.container_position.x,
evt.clientY - this.container_position.y,
this.normalizeAngle(this.getSecondAngle())
);
var diff = Math.round(angle / Math.PI * 180 / 6); // in whole seconds
this.current_time.setSeconds(this.current_time.getSeconds() + Math.round(diff));
this.reflectTime();
}else if(dojox.gfx.equalSources(this.selected_hand, this.minute_hand.getEventSource())){
var angle = this.calculateAngle(
evt.clientX - this.container_position.x,
evt.clientY - this.container_position.y,
this.normalizeAngle(this.getMinuteAngle(this.diff_time))
);
var diff = Math.round(angle / Math.PI * 180 / 6 * 60); // in whole seconds
this.diff_time.setTime(this.diff_time.getTime() + 1000 * diff);
this.reflectTime(this.diff_time, true);
}else if(dojox.gfx.equalSources(this.selected_hand, this.hour_hand.getEventSource())){
var angle = this.calculateAngle(
evt.clientX - this.container_position.x,
evt.clientY - this.container_position.y,
this.normalizeAngle(this.getHourAngle(this.diff_time))
);
var diff = Math.round(angle / Math.PI * 180 / 30 * 60 * 60); // in whole seconds
this.diff_time.setTime(this.diff_time.getTime() + 1000 * diff);
this.reflectTime(this.diff_time, true, true);
}else{
return;
}
dojo.stopEvent(evt);
},
onMouseUp:function(evt){
if(this.selected_hand && !dojox.gfx.equalSources(this.selected_hand, this.second_hand.getEventSource())){
this.current_time.setTime(this.diff_time.getTime());
this.reflectTime();
}
this.selected_hand = null;
dojo.stopEvent(evt);
}
});
dojo.require("dijit.form.Button");
dojo.addOnLoad(function(){
var n = dojo.doc.createElement('div');
dojo.body().appendChild(n);
dojo.style(n,{
height:"200px", width:"200px",
border:"5px solid #ededed"
});
new demo.Clock({},n);
});
</script>
<style type="text/css">
.movable { cursor: hand; }
</style>
</head>
<body>
<h1>dojox.gfx: interactive analog clock</h1>
<p>Grab hands and set your own time.</p>
<p>Warning: Canvas renderer doesn't implement event handling.</p>
<button dojoType="dijit.form.Button">
Resize
<script type="dojo/method" data-dojo-event="onClick">
dijit.byId("one").resize({ w:250, h:250 });
</script>
</button>
<hr noshade size="0" />
<div class="dijitInline" dojoType="demo.Clock" id="gfx_holder" style="width: 300px; height: 300px;"></div>
<div class="dijitInline" img="images/clock_face.jpg" dojoType="demo.InteractiveClock" style="width: 225px; height: 225px;"></div>
<div class="dijitInline" id="one" dojoType="demo.Clock" style="width: 150px; height: 150px;"></div>
<div class="dijitInline" dojoType="demo.Clock" style="width: 75px; height: 75px;"></div>
<hr noshade size="0" />
</body>
</html>