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<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/tests/css/dijitTests.css"; |
</style> |
<!-- |
The next line should include Microsoft's Silverlight.js, if you plan to use the silverlight backend |
<script type="text/javascript" src="Silverlight.js"></script> |
--> |
<script type="text/javascript" src="../../../dojo/dojo.js"></script> |
<script type="text/javascript"> |
|
dojo.require("dojox.gfx"); |
dojo.require("dojo.date.locale"); |
|
var current_time = new Date(); |
|
var hour_hand = null; |
var minute_hand = null; |
var second_hand = null; |
|
var hour_shadow = null; |
var minute_shadow = null; |
var second_shadow = null; |
|
var center = {x: 385 / 2, y: 385 / 2}; |
|
var hour_shadow_shift = {dx: 2, dy: 2}; |
var minute_shadow_shift = {dx: 3, dy: 3}; |
var second_shadow_shift = {dx: 4, dy: 4}; |
|
var selected_hand = null; |
var container = null; |
var container_position = null; |
var text_time = null; |
var diff_time = new Date(); |
|
placeHand = function(shape, angle, shift){ |
var move = {dx: center.x + (shift ? shift.dx : 0), dy: 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); |
placeHand(hour_hand, angle); |
placeHand(hour_shadow, angle, hour_shadow_shift); |
}; |
|
placeMinuteHand = function(m, s){ |
var angle = 6 * (m + s / 60); |
placeHand(minute_hand, angle); |
placeHand(minute_shadow, angle, minute_shadow_shift); |
}; |
|
placeSecondHand = function(s){ |
var angle = 6 * s; |
placeHand(second_hand, angle); |
placeHand(second_shadow, angle, second_shadow_shift); |
}; |
|
reflectTime = function(time, hold_second_hand, hold_minute_hand, hold_hour_hand){ |
if(!time) time = current_time; |
var h = time.getHours(); |
var m = time.getMinutes(); |
var s = time.getSeconds(); |
if(!hold_hour_hand) placeHourHand(h, m, s); |
if(!hold_minute_hand) placeMinuteHand(m, s); |
if(!hold_second_hand) placeSecondHand(s); |
text_time.innerHTML = dojo.date.locale.format( |
time, {selector: "time", timePattern: "h:mm:ss a"}); |
}; |
|
resetTime = function(){ |
current_time = new Date(); |
reflectTime(); |
}; |
|
tick = function(){ |
current_time.setSeconds(current_time.getSeconds() + 1); |
reflectTime(); |
}; |
|
advanceTime = function(){ |
if(!selected_hand) { |
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 normalizeAngle(Math.atan2(y - center.y, x - center.x) - handAngle); |
} catch(e) { |
// supress |
} |
return 0; |
}; |
|
getSecondAngle = function(time){ |
if(!time) time = current_time; |
return (6 * time.getSeconds() - 90) / 180 * Math.PI; |
}; |
|
getMinuteAngle = function(time){ |
if(!time) time = current_time; |
return (6 * (time.getMinutes() + time.getSeconds() / 60) - 90) / 180 * Math.PI; |
}; |
|
getHourAngle = function(time){ |
if(!time) time = current_time; |
return (30 * (time.getHours() + (time.getMinutes() + time.getSeconds() / 60) / 60) - 90) / 180 * Math.PI; |
}; |
|
onMouseDown = function(evt){ |
selected_hand = evt.target; |
diff_time.setTime(current_time.getTime()); |
dojo.stopEvent(evt); |
}; |
|
onMouseMove = function(evt){ |
if(!selected_hand) return; |
if(evt.target == second_hand.getEventSource() || |
evt.target == minute_hand.getEventSource() || |
evt.target == hour_hand.getEventSource()){ |
dojo.stopEvent(evt); |
return; |
} |
if(dojox.gfx.equalSources(selected_hand, second_hand.getEventSource())){ |
var angle = calculateAngle( |
evt.clientX - container_position.x, |
evt.clientY - container_position.y, |
normalizeAngle(getSecondAngle()) |
); |
var diff = Math.round(angle / Math.PI * 180 / 6); // in whole seconds |
current_time.setSeconds(current_time.getSeconds() + Math.round(diff)); |
reflectTime(); |
}else if(dojox.gfx.equalSources(selected_hand, minute_hand.getEventSource())){ |
var angle = calculateAngle( |
evt.clientX - container_position.x, |
evt.clientY - container_position.y, |
normalizeAngle(getMinuteAngle(diff_time)) |
); |
var diff = Math.round(angle / Math.PI * 180 / 6 * 60); // in whole seconds |
diff_time.setTime(diff_time.getTime() + 1000 * diff); |
reflectTime(diff_time, true); |
|
}else if(dojox.gfx.equalSources(selected_hand, hour_hand.getEventSource())){ |
var angle = calculateAngle( |
evt.clientX - container_position.x, |
evt.clientY - container_position.y, |
normalizeAngle(getHourAngle(diff_time)) |
); |
var diff = Math.round(angle / Math.PI * 180 / 30 * 60 * 60); // in whole seconds |
diff_time.setTime(diff_time.getTime() + 1000 * diff); |
reflectTime(diff_time, true, true); |
}else{ |
return; |
} |
dojo.stopEvent(evt); |
}; |
|
onMouseUp = function(evt){ |
if(selected_hand && !dojox.gfx.equalSources(selected_hand, second_hand.getEventSource())){ |
current_time.setTime(diff_time.getTime()); |
reflectTime(); |
} |
selected_hand = null; |
dojo.stopEvent(evt); |
}; |
|
makeShapes = function(){ |
// prerequisites |
container = dojo.byId("gfx_holder"); |
container_position = dojo.coords(container, true); |
text_time = dojo.byId("time"); |
var surface = dojox.gfx.createSurface(container, 385, 385); |
surface.createImage({width: 385, height: 385, src: "images/clock_face_black.jpg"}); |
|
// hand shapes |
var hour_hand_points = [{x: -7, y: 15}, {x: 7, y: 15}, {x: 0, y: -60}, {x: -7, y: 15}]; |
var minute_hand_points = [{x: -5, y: 15}, {x: 5, y: 15}, {x: 0, y: -100}, {x: -5, y: 15}]; |
var second_hand_points = [{x: -2, y: 15}, {x: 2, y: 15}, {x: 2, y: -105}, {x: 6, y: -105}, {x: 0, y: -116}, {x: -6, y: -105}, {x: -2, y: -105}, {x: -2, y: 15}]; |
|
// create shapes |
hour_shadow = surface.createPolyline(hour_hand_points) |
.setFill([0, 0, 0, 0.1]) |
; |
hour_hand = surface.createPolyline(hour_hand_points) |
.setStroke({color: "black", width: 2}) |
.setFill("#889") |
; |
minute_shadow = surface.createPolyline(minute_hand_points) |
.setFill([0, 0, 0, 0.1]) |
; |
minute_hand = surface.createPolyline(minute_hand_points) |
.setStroke({color: "black", width: 2}) |
.setFill("#ccd") |
; |
second_shadow = surface.createPolyline(second_hand_points) |
.setFill([0, 0, 0, 0.1]) |
; |
second_hand = surface.createPolyline(second_hand_points) |
.setStroke({color: "#800", width: 1}) |
.setFill("#d00") |
; |
|
// next 3 lines kill Silverlight because its nodes do not support CSS |
//dojox.gfx._addClass(hour_hand .getEventSource(), "movable"); |
//dojox.gfx._addClass(minute_hand.getEventSource(), "movable"); |
//dojox.gfx._addClass(second_hand.getEventSource(), "movable"); |
|
surface.createCircle({r: 1}).setFill("black").setTransform({dx: 192.5, dy: 192.5}); |
|
// attach events |
hour_hand .connect("onmousedown", onMouseDown); |
minute_hand.connect("onmousedown", onMouseDown); |
second_hand.connect("onmousedown", onMouseDown); |
dojo.connect(container, "onmousemove", onMouseMove); |
dojo.connect(container, "onmouseup", onMouseUp); |
dojo.connect(dojo.byId("reset"), "onclick", resetTime); |
|
// start the clock |
resetTime(); |
window.setInterval(advanceTime, 1000); |
}; |
|
dojo.addOnLoad(makeShapes); |
|
</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> |
<div id="gfx_holder" style="width: 385px; height: 385px;"></div> |
<p>Current time: <span id="time"></span>.</p> |
<p><button id="reset">Reset</button></p> |
</body> |
</html> |