98 lines
2.7 KiB
Text
98 lines
2.7 KiB
Text
# PFD UI Element - Pointer UI Element. Displays value by moving the element on a horizontal or vertical scale.
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var PointerElement =
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{
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new : func (pagename, svg, name, minVal, maxVal, scalePx, vertical=0, value=0, style=nil)
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{
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var obj = {
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parents : [ PointerElement, 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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_scale : scalePx,
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_vertical : vertical,
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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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obj.setValue(value);
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# State and timer for flashing highlighting of elements
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# We need a separate Enabled flag as the timers are in a separate thread.
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obj._highlightEnabled = 0;
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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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# Simply shift the slider along.
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if (me._vertical) {
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# Vertical
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me._symbol.setTranslation([
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me._baseTranslation[0],
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me._baseTranslation[1] + (value * me._scale)
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]);
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} else {
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# Horizontal
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me._symbol.setTranslation([
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me._baseTranslation[0] + (value * me._scale),
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me._baseTranslation[1]
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]);
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}
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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._highlightEnabled == 0) {
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me._symbol.setVisible(0);
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me._highlighted = 0;
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} else {
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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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},
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highlightElement : func() {
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me._highlightEnabled = 1;
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me._highlighted = 0;
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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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me._highlightEnabled = 0;
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me._highlighted = 0;
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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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