293 lines
9 KiB
JavaScript
293 lines
9 KiB
JavaScript
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dojo.provide("dojox.widget.BarGauge");
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dojo.require("dojox.gfx");
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dojo.require("dojox.widget.gauge._Gauge");
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dojo.experimental("dojox.widget.BarGauge");
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dojo.declare("dojox.widget.gauge.BarLineIndicator",[dojox.widget.gauge._Indicator],{
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width: 1,
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_getShapes: function(){
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// summary:
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// Private function for generating the shapes for this indicator. An indicator that behaves the
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// same might override this one and simply replace the shapes (such as BarIndicator).
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if(!this._gauge){
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return null;
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}
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var v = this.value;
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if(v < this._gauge.min){v = this._gauge.min;}
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if(v > this._gauge.max){v = this._gauge.max;}
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var pos = this._gauge._getPosition(v);
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var shapes = [];
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if(this.width > 1){
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shapes[0] = this._gauge.surface.createRect({
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x:pos,
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y:this._gauge.dataY + this.offset,
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width:this.width,
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height:this.length
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});
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shapes[0].setStroke({color: this.color});
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shapes[0].setFill(this.color);
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}else{
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shapes[0] = this._gauge.surface.createLine({
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x1:pos,
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y1:this._gauge.dataY + this.offset,
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x2:pos,
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y2:this._gauge.dataY + this.offset + this.length
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});
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shapes[0].setStroke({color: this.color});
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}
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return shapes;
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},
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draw: function(/*Boolean?*/ dontAnimate){
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// summary:
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// Override of dojox.widget.gauge._Indicator.draw
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// dontAnimate: Boolean
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// Indicates if the drawing should not be animated (vs. the default of doing an animation)
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var i;
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if(this.shapes){
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this._move(dontAnimate);
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}else{
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if(this.shapes){
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for(i=0; i<this.shapes.length; i++){
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this._gauge.surface.remove(this.shapes[i]);
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}
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this.shapes = null;
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}
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if(this.text) {
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this._gauge.surface.rawNode.removeChild(this.text);
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this.text = null;
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}
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this.color = this.color || '#000000';
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this.length = this.length || this._gauge.dataHeight;
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this.width = this.width || 3;
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this.offset = this.offset || 0;
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this.highlight = this.highlight || '#4D4D4D';
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this.highlight2 = this.highlight2 || '#A3A3A3';
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this.shapes = this._getShapes(this._gauge, this);
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if(this.label){
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var v = this.value;
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if(v < this._gauge.min){v = this._gauge.min;}
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if(v > this._gauge.max){v = this._gauge.max;}
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var pos = this._gauge._getPosition(v);
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this.text = this._gauge.drawText(''+this.label, pos, this._gauge.dataY + this.offset - 5, 'middle','top', this.color, this.font);
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}
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for(i=0; i<this.shapes.length; i++){
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if(this.hover){
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this.shapes[i].getEventSource().setAttribute('hover',this.hover);
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}
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if(this.onDragMove && !this.noChange){
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this._gauge.connect(this.shapes[i].getEventSource(), 'onmousedown', this._gauge.handleMouseDown);
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this.shapes[i].getEventSource().style.cursor = 'pointer';
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}
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}
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this.currentValue = this.value;
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}
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},
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_move: function(/*Boolean?*/ dontAnimate){
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// summary:
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// Moves this indicator (since it's already been drawn once)
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// dontAnimate: Boolean
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// Indicates if the drawing should not be animated (vs. the default of doing an animation)
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var v = this.value ;
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if(v < this.min){v = this.min;}
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if(v > this.max){v = this.max;}
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var c = this._gauge._getPosition(this.currentValue);
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this.currentValue = v;
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v = this._gauge._getPosition(v)-this._gauge.dataX;
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if(dontAnimate){
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this.shapes[0].applyTransform(dojox.gfx.matrix.translate(v-(this.shapes[0].matrix?this.shapes[0].matrix.dx:0),0));
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}else{
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var anim = new dojo._Animation({curve: [c, v], duration: this.duration, easing: this.easing});
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dojo.connect(anim, "onAnimate", dojo.hitch(this, function(jump){
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this.shapes[0].applyTransform(dojox.gfx.matrix.translate(jump-(this.shapes[0].matrix?this.shapes[0].matrix.dx:0),0));
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}));
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anim.play();
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}
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}
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});
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dojo.declare("dojox.widget.BarGauge",dojox.widget.gauge._Gauge,{
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// summary:
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// a bar graph built using the dojox.gfx package.
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//
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// description:
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// using dojo.gfx (and thus either SVG or VML based on what is supported), this widget
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// builds a bar graph component, used to display numerical data in a familiar format.
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//
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// usage:
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// <script type="text/javascript">
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// dojo.require("dojox.widget.BarGauge");
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// dojo.require("dijit.util.parser");
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// </script>
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// ...
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// <div dojoType="dojox.widget.BarGauge"
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// id="testBarGauge"
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// barGaugeHeight="55"
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// dataY="25"
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// dataHeight="25"
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// dataWidth="225">
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// </div>
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// dataX: Number
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// x position of data area (default 5)
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dataX: 5,
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// dataY: Number
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// y position of data area (default 5)
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dataY: 5,
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// dataWidth: Number
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// width of data area (default is bar graph width - 10)
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dataWidth: 0,
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// dataHeight: Number
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// height of data area (default is bar graph width - 10)
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dataHeight: 0,
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// _defaultIndicator: override of dojox.widget._Gauge._defaultIndicator
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_defaultIndicator: dojox.widget.gauge.BarLineIndicator,
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startup: function(){
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// handle settings from HTML by making sure all the options are
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// converted correctly to numbers
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//
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// also connects mouse handling events
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if(this.getChildren){
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dojo.forEach(this.getChildren(), function(child){ child.startup(); });
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}
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if(!this.dataWidth){this.dataWidth = this.gaugeWidth - 10;}
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if(!this.dataHeight){this.dataHeight = this.gaugeHeight - 10;}
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this.inherited(arguments);
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},
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_getPosition: function(/*Number*/value){
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// summary:
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// This is a helper function used to determine the position that represents
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// a given value on the bar graph
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// value: Number
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// A value to be converted to a position for this bar graph.
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return this.dataX + Math.floor((value - this.min)/(this.max - this.min)*this.dataWidth);
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},
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_getValueForPosition: function(/*Number*/pos){
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// summary:
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// This is a helper function used to determine the value represented by
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// a position on the bar graph
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// pos: Number
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// A position to be converted to a value.
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return (pos - this.dataX)*(this.max - this.min)/this.dataWidth + this.min;
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},
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draw: function(){
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// summary:
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// This function is used to draw (or redraw) the bar graph
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// description:
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// Draws the bar graph by drawing the surface, the ranges, and the indicators.
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if(!this.surface){this.createSurface();}
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var i;
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if(this._rangeData){
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for(i=0; i<this._rangeData.length; i++){
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this.drawRange(this._rangeData[i]);
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}
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if(this._img && this.image.overlay){
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this._img.moveToFront();
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}
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}
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if(this._indicatorData){
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for(i=0; i<this._indicatorData.length; i++){
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this._indicatorData[i].draw();
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}
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}
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},
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drawRange: function(/*Object*/range){
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// summary:
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// This function is used to draw (or redraw) a range
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// description:
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// Draws a range (colored area on the background of the gauge)
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// based on the given arguments.
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// range:
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// A range is either a dojox.widget.gauge.Range or an object
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// with similar parameters (low, high, hover, etc.).
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if(range.shape){
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this.surface.remove(range.shape);
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range.shape = null;
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}
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var x1 = this._getPosition(range.low);
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var x2 = this._getPosition(range.high);
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var path = this.surface.createRect({x:x1,
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y:this.dataY,
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width:x2-x1,
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height:this.dataHeight});
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if(dojo.isArray(range.color) || dojo.isString(range.color)){
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path.setStroke({color: range.color});
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path.setFill(range.color);
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}else if(range.color.type){
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// Color is a gradient
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var y = this.dataY + this.dataHeight/2;
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range.color.x1 = x1;
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range.color.x2 = x2;
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range.color.y1 = y;
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range.color.y2 = y;
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path.setFill(range.color);
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path.setStroke({color: range.color.colors[0].color});
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}else{
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// We've defined a style rather than an explicit color
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path.setStroke({color: "green"}); // Arbitrary color, just have to indicate
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path.setFill("green"); // that we want it filled
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path.getEventSource().setAttribute("class", range.color.style);
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}
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if(range.hover){
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path.getEventSource().setAttribute('hover',range.hover);
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}
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range.shape = path;
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},
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getRangeUnderMouse: function(/*Object*/event){
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// summary:
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// Determines which range the mouse is currently over
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// event: Object
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// The event object as received by the mouse handling functions below.
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var range = null;
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var pos = dojo.coords(this.gaugeContent);
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var x = event.clientX - pos.x;
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var value = this._getValueForPosition(x);
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if(this._rangeData){
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for(var i=0; (i<this._rangeData.length) && !range; i++) {
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if((Number(this._rangeData[i].low) <= value) && (Number(this._rangeData[i].high) >= value)){
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range = this._rangeData[i];
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}
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}
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}
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return range;
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},
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_dragIndicator: function(/*Object*/ widget, /*Object*/ event){
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// summary:
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// Handles the dragging of an indicator, including moving/re-drawing
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// get new value based on mouse position
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var pos = dojo.coords(widget.gaugeContent);
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var x = event.clientX - pos.x;
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var value = widget._getValueForPosition(x);
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if(value < widget.min){value = widget.min;}
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if(value > widget.max){value = widget.max;}
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// update the indicator
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widget._drag.value = value;
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// callback
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widget._drag.onDragMove(widget._drag);
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// redraw/move indicator(s)
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widget._drag.draw(true);
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dojo.stopEvent(event);
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}
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});
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