83 lines
2.4 KiB
Text
83 lines
2.4 KiB
Text
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# PFD UI Element - Rotating UI Element. Displays value by rotating an element around a center-point
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var RotatingElement =
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{
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new : func (pagename, svg, name, minVal, maxVal, rangeDeg, centerOffset, value=0, style=nil)
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{
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var obj = {
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parents : [ RotatingElement, PFD.UIElement ],
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_name : pagename ~ name,
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_edit : 0,
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_min : minVal,
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_max : maxVal,
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_rangeDeg : rangeDeg,
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_style : style,
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};
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if (style == nil) obj._style = PFD.DefaultStyle;
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obj._symbol = svg.getElementById(obj._name);
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assert(obj._symbol != nil, "Unable to find element " ~ obj._name);
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obj._baseTranslation = obj._symbol.getTranslation();
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# Set the center for rotation purposes.
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assert(size(centerOffset) == 2, "centerOffset must be an array of two elements [x,y]");
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obj._symbol.set("center-offset-x", centerOffset[0]);
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obj._symbol.set("center-offset-y", centerOffset[1]);
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obj.setValue(value);
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# State and timer for flashing highlighting of elements
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obj._highlighted = 0;
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obj._flashTimer = nil;
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return obj;
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},
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getName : func() { return me._name; },
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getValue : func() { return me._value; },
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setValue : func(value) {
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if (value == nil) value = 0.0;
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# Bound value to the minimum and maximum values.
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value = math.max(me._min, value);
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value = math.min(me._max, value);
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# Convert to normalized value
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value = (value - me._min) / (me._max - me._min);
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# Rotate, scales appropriately
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me._symbol.setRotation(value * me._rangeDeg * D2R, [0.0, 0.0]);
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},
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setVisible : func(vis) { me._symbol.setVisible(vis); },
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_flashElement : func() {
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if (me._highlighted == 0) {
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me._symbol.setVisible(1);
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me._highlighted = 1;
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} else {
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me._symbol.setVisible(0);
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me._highlighted = 0;
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}
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},
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highlightElement : func() {
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me._flashElement();
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me._flashTimer = maketimer(me._style.CURSOR_BLINK_PERIOD, me, me._flashElement);
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me._flashTimer.start();
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},
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unhighlightElement : func() {
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if (me._flashTimer != nil) me._flashTimer.stop();
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me._flashTimer = nil;
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# Reset the highlight to a non-highlighted state.
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me._highlighted = 1;
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me._flashElement();
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},
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isEditable : func () { return 0; },
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isInEdit : func() { return 0; },
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enterElement : func() { return me.getValue(); },
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clearElement : func() { },
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editElement : func() { },
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incrSmall : func(value) { },
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incrLarge : func(value) { },
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};
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