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//>>built
define("dojox/gauges/AnalogIndicatorBase", ["dojo/_base/lang","dojo/_base/declare","dojo/_base/connect","dojo/_base/fx","dojox/gfx","./_Indicator"],
function(lang, declare, connect, fx, gfx, Indicator) {
/*=====
Indicator = dojox.gauges._indicator;
=====*/
return declare("dojox.gauges.AnalogIndicatorBase",[Indicator],{
// summary:
// An abstract base class for indicators that can be used in an AnalogGauge.
//
draw: function(/*dojox.gfx.Group*/ group, /*Boolean?*/ dontAnimate){
// summary:
// Override of dojox.gauges._Indicator.draw
// group: dojox.gfx.Group
// The GFX group when the indicator must be drawn
// dontAnimate: Boolean
// Indicates if the drawing should not be animated (vs. the default of doing an animation)
if(this.shape){
this._move(dontAnimate);
}else{
if(this.text){
this.text.parent.remove(this.text);
this.text = null;
}
var a = this._gauge._getAngle(Math.min(Math.max(this.value, this._gauge.min), this._gauge.max));
this.color = this.color || '#000000';
this.length = this.length || this._gauge.radius;
this.width = this.width || 1;
this.offset = this.offset || 0;
this.highlight = this.highlight || '#D0D0D0';
var shapes = this._getShapes(group, this._gauge, this);
if (shapes){
if (shapes.length > 1){
this.shape = group.createGroup();
for (var s = 0; s < shapes.length; s++){
this.shape.add(shapes[s]);
}
}
else
this.shape = shapes[0];
this.shape.setTransform([{
dx: this._gauge.cx,
dy: this._gauge.cy
}, gfx.matrix.rotateg(a)]);
this.shape.connect("onmouseover", this, this.handleMouseOver);
this.shape.connect("onmouseout", this, this.handleMouseOut);
this.shape.connect("onmousedown", this, this.handleMouseDown);
this.shape.connect("touchstart", this, this.handleTouchStart);
}
if(this.label){
var direction = this.direction;
if (!direction) direction = 'outside';
var len;
if (direction == 'inside')
len=-this.length+this.offset - 5;
else
len=this.length+this.offset + 5;
var rad=this._gauge._getRadians(90-a);
this._layoutLabel(group, this.label+'', this._gauge.cx, this._gauge.cy,len ,rad , direction);
}
this.currentValue = this.value;
}
},
_layoutLabel:function(group, txt, ox, oy, lrad, angle, labelPlacement){
// summary:
// Places the label on the side of the tick.
var font = this.font ? this.font : gfx.defaultFont;
var box = gfx._base._getTextBox(txt,
{
font: gfx.makeFontString(gfx.makeParameters(gfx.defaultFont,font))
});
var tw = box.w;
var fz = font.size;
var th = gfx.normalizedLength(fz);
var tfx = ox + Math.cos(angle) * lrad - tw / 2;
var tfy = oy - Math.sin(angle) * lrad - th / 2;
var side;
var intersections = [];
// Intersection with top segment
side = tfx;
var ipx = side;
var ipy = -Math.tan(angle) * side + oy + Math.tan(angle) * ox;
// Verify if intersection is on segment
if (ipy >= tfy && ipy <= tfy + th)
intersections.push({
x: ipx,
y: ipy
});
// Intersection with bottom segment
side = tfx + tw;
ipx = side;
ipy = -Math.tan(angle) * side + oy + Math.tan(angle) * ox;
// Verify if intersection is on segment
if (ipy >= tfy && ipy <= tfy + th) intersections.push({
x: ipx,
y: ipy
});
// Intersection with left segment
side = tfy;
ipx = -1 / Math.tan(angle) * side + ox + 1 / Math.tan(angle) * oy;
ipy = side;
// Verify if intersection is on segment
if (ipx >= tfx && ipx <= tfx + tw)
intersections.push({
x: ipx,
y: ipy
});
// Intersection with right segment
side = tfy + th;
ipx = -1 / Math.tan(angle) * side + ox + 1 / Math.tan(angle) * oy;
ipy = side;
// Verify if intersection is on segment
if (ipx >= tfx && ipx <= tfx + tw)
intersections.push({
x: ipx,
y: ipy
});
var dif;
if (labelPlacement == "inside"){
for (var it = 0; it < intersections.length; it++){
var ip = intersections[it];
dif = this._distance(ip.x, ip.y, ox, oy) - lrad;
if (dif >= 0){
// Place reference intersection point on reference circle
tfx = ox + Math.cos(angle) * (lrad - dif) - tw / 2;
tfy = oy - Math.sin(angle) * (lrad - dif) - th / 2;
break;
}
}
}
else // "outside" placement
{
for (it = 0; it < intersections.length; it++){
ip = intersections[it];
dif = this._distance(ip.x, ip.y, ox, oy) - lrad;
if (dif <= 0){
// Place reference intersection point on reference circle
tfx = ox + Math.cos(angle) * (lrad - dif) - tw / 2;
tfy = oy - Math.sin(angle) * (lrad - dif) - th / 2;
break;
}
}
}
// since the size computed by getTextBox is too big,
// to lower the problem, we align this to the middle and
// place at the middle of the computed size.
this.text = this._gauge.drawText(group, txt, tfx + tw / 2, tfy + th, 'middle', this.color, this.font);
},
_distance: function(x1,y1,x2,y2){
return Math.sqrt((x2-x1)*(x2-x1) + (y2-y1)*(y2-y1));
},
_move: function(/*Boolean?*/ dontAnimate){
// summary:
// dontAnimate: Boolean
// Indicates if the drawing should not be animated (vs. the default of doing an animation)
var v = Math.min(Math.max(this.value, this._gauge.min), this._gauge.max),
c = this.currentValue
;
if(dontAnimate){
var angle = this._gauge._getAngle(v);
this.shape.setTransform([{dx:this._gauge.cx,dy:this._gauge.cy}, gfx.matrix.rotateg(angle)]);
this.currentValue = v;
}else{
if(c!=v){
var anim = new fx.Animation({curve: [c, v], duration: this.duration, easing: this.easing});
connect.connect(anim, "onAnimate", lang.hitch(this, function(step){
this.shape.setTransform([{dx:this._gauge.cx,dy:this._gauge.cy}, gfx.matrix.rotateg(this._gauge._getAngle(step))]);
this.currentValue = step;
}));
anim.play();
}
}
}
});
});
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