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steelseries.js
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/*!
* Name : steelseries.js
* Authors : Gerrit Grunwald, Mark Crossley
* Last modified : 17.05.2013
* Revision : 0.14.3
*
* Copyright (c) 2011, Gerrit Grunwald, Mark Crossley
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are permitted
* provided that the following conditions are met:
*
* # Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
* # Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
* SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*globals Tween */
var steelseries = (function () {
// Constants
var HALF_PI = Math.PI * 0.5,
TWO_PI = Math.PI * 2,
PI = Math.PI,
RAD_FACTOR = Math.PI / 180,
DEG_FACTOR = 180 / Math.PI,
doc = document,
lcdFontName = 'LCDMono2Ultra,Arial,Verdana,sans-serif',
stdFontName = 'Arial,Verdana,sans-serif';
//************************************* C O M P O N O N E N T S ************************************************
var radial = function (canvas, parameters) {
parameters = parameters || {};
var gaugeType = (undefined === parameters.gaugeType ? steelseries.GaugeType.TYPE4 : parameters.gaugeType),
size = (undefined === parameters.size ? 0 : parameters.size),
minValue = (undefined === parameters.minValue ? 0 : parameters.minValue),
maxValue = (undefined === parameters.maxValue ? (minValue + 100) : parameters.maxValue),
niceScale = (undefined === parameters.niceScale ? true : parameters.niceScale),
threshold = (undefined === parameters.threshold ? (maxValue - minValue) / 2 + minValue: parameters.threshold),
thresholdRising = (undefined === parameters.thresholdRising ? true : parameters.thresholdRising),
section = (undefined === parameters.section ? null : parameters.section),
area = (undefined === parameters.area ? null : parameters.area),
titleString = (undefined === parameters.titleString ? '' : parameters.titleString),
unitString = (undefined === parameters.unitString ? '' : parameters.unitString),
frameDesign = (undefined === parameters.frameDesign ? steelseries.FrameDesign.METAL : parameters.frameDesign),
frameVisible = (undefined === parameters.frameVisible ? true : parameters.frameVisible),
backgroundColor = (undefined === parameters.backgroundColor ? steelseries.BackgroundColor.DARK_GRAY : parameters.backgroundColor),
backgroundVisible = (undefined === parameters.backgroundVisible ? true : parameters.backgroundVisible),
pointerType = (undefined === parameters.pointerType ? steelseries.PointerType.TYPE1 : parameters.pointerType),
pointerColor = (undefined === parameters.pointerColor ? steelseries.ColorDef.RED : parameters.pointerColor),
knobType = (undefined === parameters.knobType ? steelseries.KnobType.STANDARD_KNOB : parameters.knobType),
knobStyle = (undefined === parameters.knobStyle ? steelseries.KnobStyle.SILVER : parameters.knobStyle),
lcdColor = (undefined === parameters.lcdColor ? steelseries.LcdColor.STANDARD : parameters.lcdColor),
lcdVisible = (undefined === parameters.lcdVisible ? true : parameters.lcdVisible),
lcdDecimals = (undefined === parameters.lcdDecimals ? 2 : parameters.lcdDecimals),
digitalFont = (undefined === parameters.digitalFont ? false : parameters.digitalFont),
fractionalScaleDecimals = (undefined === parameters.fractionalScaleDecimals ? 1 : parameters.fractionalScaleDecimals),
ledColor = (undefined === parameters.ledColor ? steelseries.LedColor.RED_LED : parameters.ledColor),
ledVisible = (undefined === parameters.ledVisible ? true : parameters.ledVisible),
userLedColor = (undefined === parameters.userLedColor ? steelseries.LedColor.GREEN_LED : parameters.userLedColor),
userLedVisible = (undefined === parameters.userLedVisible ? false : parameters.userLedVisible),
thresholdVisible = (undefined === parameters.thresholdVisible ? true : parameters.thresholdVisible),
minMeasuredValueVisible = (undefined === parameters.minMeasuredValueVisible ? false : parameters.minMeasuredValueVisible),
maxMeasuredValueVisible = (undefined === parameters.maxMeasuredValueVisible ? false : parameters.maxMeasuredValueVisible),
foregroundType = (undefined === parameters.foregroundType ? steelseries.ForegroundType.TYPE1 : parameters.foregroundType),
foregroundVisible = (undefined === parameters.foregroundVisible ? true : parameters.foregroundVisible),
labelNumberFormat = (undefined === parameters.labelNumberFormat ? steelseries.LabelNumberFormat.STANDARD : parameters.labelNumberFormat),
playAlarm = (undefined === parameters.playAlarm ? false : parameters.playAlarm),
alarmSound = (undefined === parameters.alarmSound ? false : parameters.alarmSound),
customLayer = (undefined === parameters.customLayer ? null : parameters.customLayer),
tickLabelOrientation = (undefined === parameters.tickLabelOrientation ? (gaugeType === steelseries.GaugeType.TYPE1 ? steelseries.TickLabelOrientation.TANGENT : steelseries.TickLabelOrientation.NORMAL) : parameters.tickLabelOrientation),
trendVisible = (undefined === parameters.trendVisible ? false : parameters.trendVisible),
trendColors = (undefined === parameters.trendColors ? [steelseries.LedColor.RED_LED, steelseries.LedColor.GREEN_LED, steelseries.LedColor.CYAN_LED] : parameters.trendColors),
useOdometer = (undefined === parameters.useOdometer ? false : parameters.useOdometer),
odometerParams = (undefined === parameters.odometerParams ? {} : parameters.odometerParams),
odometerUseValue = (undefined === parameters.odometerUseValue ? false : parameters.odometerUseValue),
fullScaleDeflectionTime = (undefined === parameters.fullScaleDeflectionTime ? 2.5 : parameters.fullScaleDeflectionTime);
// Get the canvas context and clear it
var mainCtx = doc.getElementById(canvas).getContext('2d');
// Has a size been specified?
if (size === 0) {
size = Math.min(mainCtx.canvas.width, mainCtx.canvas.height);
}
// Set the size - also clears the canvas
mainCtx.canvas.width = size;
mainCtx.canvas.height = size;
// Create audio tag for alarm sound
var audioElement;
if (playAlarm && alarmSound !== false) {
audioElement = doc.createElement('audio');
audioElement.setAttribute('src', alarmSound);
//audioElement.setAttribute('src', 'js/alarm.mp3');
audioElement.setAttribute('preload', 'auto');
}
var value = minValue;
var odoValue = minValue;
var self = this;
// Properties
var minMeasuredValue = maxValue;
var maxMeasuredValue = minValue;
var ledBlinking = false;
var userLedBlinking = false;
var ledTimerId = 0;
var userLedTimerId = 0;
var tween;
var repainting = false;
var trendIndicator = steelseries.TrendState.OFF;
var trendSize = size * 0.06;
var trendPosX = size * 0.29;
var trendPosY = size * 0.36;
// GaugeType specific private variables
var freeAreaAngle;
var rotationOffset;
var tickmarkOffset;
var angleRange;
var angleStep;
var angle = rotationOffset + (value - minValue) * angleStep;
var imageWidth = size;
var imageHeight = size;
var centerX = imageWidth / 2;
var centerY = imageHeight / 2;
// Misc
var ledSize = size * 0.093457;
var ledPosX = 0.6 * imageWidth;
var ledPosY = 0.4 * imageHeight;
var userLedPosX = gaugeType === steelseries.GaugeType.TYPE3 ? 0.6 * imageWidth : centerX - ledSize / 2;
var userLedPosY = gaugeType === steelseries.GaugeType.TYPE3 ? 0.72 * imageHeight : 0.75 * imageHeight;
var lcdFontHeight = Math.floor(imageWidth / 10);
var stdFont = lcdFontHeight + 'px ' + stdFontName;
var lcdFont = lcdFontHeight + 'px ' + lcdFontName;
var lcdHeight = imageHeight * 0.13;
var lcdWidth = imageWidth * 0.4;
var lcdPosX = (imageWidth - lcdWidth) / 2;
var lcdPosY = imageHeight * 0.57;
var odoPosX, odoPosY = imageHeight * 0.61;
var shadowOffset = imageWidth * 0.006;
// Constants
var initialized = false;
// Tickmark specific private variables
var niceMinValue = minValue;
var niceMaxValue = maxValue;
var niceRange = maxValue - minValue;
var range = niceMaxValue - niceMinValue;
var minorTickSpacing = 0;
var majorTickSpacing = 0;
var maxNoOfMinorTicks = 10;
var maxNoOfMajorTicks = 10;
// Method to calculate nice values for min, max and range for the tickmarks
var calculate = function calculate() {
if (niceScale) {
niceRange = calcNiceNumber(maxValue - minValue, false);
majorTickSpacing = calcNiceNumber(niceRange / (maxNoOfMajorTicks - 1), true);
niceMinValue = Math.floor(minValue / majorTickSpacing) * majorTickSpacing;
niceMaxValue = Math.ceil(maxValue / majorTickSpacing) * majorTickSpacing;
minorTickSpacing = calcNiceNumber(majorTickSpacing / (maxNoOfMinorTicks - 1), true);
minValue = niceMinValue;
maxValue = niceMaxValue;
range = maxValue - minValue;
} else {
niceRange = (maxValue - minValue);
niceMinValue = minValue;
niceMaxValue = maxValue;
range = niceRange;
majorTickSpacing = calcNiceNumber(niceRange / (maxNoOfMajorTicks - 1), true);
minorTickSpacing = calcNiceNumber(majorTickSpacing / (maxNoOfMinorTicks - 1), true);
}
switch (gaugeType.type) {
case 'type1':
freeAreaAngle = 0;
rotationOffset = PI;
tickmarkOffset = HALF_PI;
angleRange = HALF_PI;
angleStep = angleRange / range;
break;
case 'type2':
freeAreaAngle = 0;
rotationOffset = PI;
tickmarkOffset = HALF_PI;
angleRange = PI;
angleStep = angleRange / range;
break;
case 'type3':
freeAreaAngle = 0;
rotationOffset = HALF_PI;
tickmarkOffset = 0;
angleRange = 1.5 * PI;
angleStep = angleRange / range;
break;
case 'type4':
/* falls through */
default:
freeAreaAngle = 60 * RAD_FACTOR;
rotationOffset = HALF_PI + (freeAreaAngle / 2);
tickmarkOffset = 0;
angleRange = TWO_PI - freeAreaAngle;
angleStep = angleRange / range;
break;
}
angle = rotationOffset + (value - minValue) * angleStep;
};
// ************** Buffer creation ********************
// Buffer for the frame
var frameBuffer = createBuffer(size, size);
var frameContext = frameBuffer.getContext('2d');
// Buffer for the background
var backgroundBuffer = createBuffer(size, size);
var backgroundContext = backgroundBuffer.getContext('2d');
var lcdBuffer;
// Buffer for led on painting code
var ledBufferOn = createBuffer(ledSize, ledSize);
var ledContextOn = ledBufferOn.getContext('2d');
// Buffer for led off painting code
var ledBufferOff = createBuffer(ledSize, ledSize);
var ledContextOff = ledBufferOff.getContext('2d');
// Buffer for current led painting code
var ledBuffer = ledBufferOff;
// Buffer for user led on painting code
var userLedBufferOn = createBuffer(ledSize, ledSize);
var userLedContextOn = userLedBufferOn.getContext('2d');
// Buffer for user led off painting code
var userLedBufferOff = createBuffer(ledSize, ledSize);
var userLedContextOff = userLedBufferOff.getContext('2d');
// Buffer for current user led painting code
var userLedBuffer = userLedBufferOff;
// Buffer for the minMeasuredValue indicator
var minMeasuredValueBuffer = createBuffer(Math.ceil(size * 0.028037), Math.ceil(size * 0.028037));
var minMeasuredValueCtx = minMeasuredValueBuffer.getContext('2d');
// Buffer for the maxMeasuredValue indicator
var maxMeasuredValueBuffer = createBuffer(Math.ceil(size * 0.028037), Math.ceil(size * 0.028037));
var maxMeasuredValueCtx = maxMeasuredValueBuffer.getContext('2d');
// Buffer for pointer image painting code
var pointerBuffer = createBuffer(size, size);
var pointerContext = pointerBuffer.getContext('2d');
// Buffer for static foreground painting code
var foregroundBuffer = createBuffer(size, size);
var foregroundContext = foregroundBuffer.getContext('2d');
// Buffers for trend indicators
var trendUpBuffer, trendSteadyBuffer, trendDownBuffer, trendOffBuffer;
// Buffer for odometer
var odoGauge, odoBuffer, odoContext;
if (useOdometer && lcdVisible) {
odoBuffer = createBuffer(10, 10); // size doesn't matter, it will get reset by odometer code
odoContext = odoBuffer.getContext('2d');
}
// ************** Image creation ********************
var drawLcdText = function (ctx, value) {
ctx.restore();
ctx.save();
ctx.textAlign = 'right';
ctx.strokeStyle = lcdColor.textColor;
ctx.fillStyle = lcdColor.textColor;
if (lcdColor === steelseries.LcdColor.STANDARD || lcdColor === steelseries.LcdColor.STANDARD_GREEN) {
ctx.shadowColor = 'gray';
ctx.shadowOffsetX = imageWidth * 0.007;
ctx.shadowOffsetY = imageWidth * 0.007;
ctx.shadowBlur = imageWidth * 0.007;
}
if (digitalFont) {
ctx.font = lcdFont;
} else {
ctx.font = stdFont;
}
ctx.fillText(value.toFixed(lcdDecimals), lcdPosX + lcdWidth - lcdWidth * 0.05, lcdPosY + lcdHeight * 0.5 + lcdFontHeight * 0.38, lcdWidth * 0.9);
ctx.restore();
};
var drawPostsImage = function (ctx) {
ctx.save();
if ('type1' === gaugeType.type) {
// Draw max center top post
ctx.drawImage(createKnobImage(Math.ceil(imageHeight * 0.037383), steelseries.KnobType.STANDARD_KNOB, knobStyle), imageWidth * 0.523364, imageHeight * 0.130841);
}
if ('type1' === gaugeType.type || 'type2' === gaugeType.type) {
// Draw min left post
ctx.drawImage(createKnobImage(Math.ceil(imageHeight * 0.037383), steelseries.KnobType.STANDARD_KNOB, knobStyle), imageWidth * 0.130841, imageHeight * 0.514018);
}
if ('type2' === gaugeType.type || 'type3' === gaugeType.type) {
// Draw max right post
ctx.drawImage(createKnobImage(Math.ceil(imageHeight * 0.037383), steelseries.KnobType.STANDARD_KNOB, knobStyle), imageWidth * 0.831775, imageHeight * 0.514018);
}
if ('type3' === gaugeType.type) {
// Draw min center bottom post
ctx.drawImage(createKnobImage(Math.ceil(imageHeight * 0.037383), steelseries.KnobType.STANDARD_KNOB, knobStyle), imageWidth * 0.523364, imageHeight * 0.831775);
}
if ('type4' === gaugeType.type) {
// Min post
ctx.drawImage(createKnobImage(Math.ceil(imageHeight * 0.037383), steelseries.KnobType.STANDARD_KNOB, knobStyle), imageWidth * 0.336448, imageHeight * 0.803738);
// Max post
ctx.drawImage(createKnobImage(Math.ceil(imageHeight * 0.037383), steelseries.KnobType.STANDARD_KNOB, knobStyle), imageWidth * 0.626168, imageHeight * 0.803738);
}
ctx.restore();
};
var createThresholdImage = function () {
var thresholdBuffer = doc.createElement('canvas');
thresholdBuffer.width = Math.ceil(size * 0.046728);
thresholdBuffer.height = Math.ceil(thresholdBuffer.width * 0.9);
var thresholdCtx = thresholdBuffer.getContext('2d');
thresholdCtx.save();
var gradThreshold = thresholdCtx.createLinearGradient(0, 0.1, 0, thresholdBuffer.height * 0.9);
gradThreshold.addColorStop(0, '#520000');
gradThreshold.addColorStop(0.3, '#fc1d00');
gradThreshold.addColorStop(0.59, '#fc1d00');
gradThreshold.addColorStop(1, '#520000');
thresholdCtx.fillStyle = gradThreshold;
thresholdCtx.beginPath();
thresholdCtx.moveTo(thresholdBuffer.width * 0.5, 0.1);
thresholdCtx.lineTo(thresholdBuffer.width * 0.9, thresholdBuffer.height * 0.9);
thresholdCtx.lineTo(thresholdBuffer.width * 0.1, thresholdBuffer.height * 0.9);
thresholdCtx.lineTo(thresholdBuffer.width * 0.5, 0.1);
thresholdCtx.closePath();
thresholdCtx.fill();
thresholdCtx.strokeStyle = '#FFFFFF';
thresholdCtx.stroke();
thresholdCtx.restore();
return thresholdBuffer;
};
var drawAreaSectionImage = function (ctx, start, stop, color, filled) {
if (start < minValue) {
start = minValue;
} else if (start > maxValue) {
start = maxValue;
}
if (stop < minValue) {
stop = minValue;
} else if (stop > maxValue) {
stop = maxValue;
}
if (start >= stop) {
return;
}
ctx.save();
ctx.strokeStyle = color;
ctx.fillStyle = color;
ctx.lineWidth = imageWidth * 0.035;
var startAngle = (angleRange / range * start - angleRange / range * minValue);
var stopAngle = startAngle + (stop - start) / (range / angleRange);
ctx.translate(centerX, centerY);
ctx.rotate(rotationOffset);
ctx.beginPath();
if (filled) {
ctx.moveTo(0, 0);
ctx.arc(0, 0, imageWidth * 0.365 - ctx.lineWidth / 2, startAngle, stopAngle, false);
} else {
ctx.arc(0, 0, imageWidth * 0.365, startAngle, stopAngle, false);
}
// ctx.closePath();
if (filled) {
ctx.moveTo(0, 0);
ctx.fill();
} else {
ctx.stroke();
}
ctx.translate(-centerX, -centerY);
ctx.restore();
};
var drawTickmarksImage = function (ctx, labelNumberFormat) {
var fontSize = Math.ceil(imageWidth * 0.04),
alpha = rotationOffset, // Tracks total rotation
rotationStep = angleStep * minorTickSpacing,
textRotationAngle,
valueCounter = minValue,
majorTickCounter = maxNoOfMinorTicks - 1,
OUTER_POINT = imageWidth * 0.38,
MAJOR_INNER_POINT = imageWidth * 0.35,
MED_INNER_POINT = imageWidth * 0.355,
MINOR_INNER_POINT = imageWidth * 0.36,
TEXT_TRANSLATE_X = imageWidth * 0.3,
TEXT_WIDTH = imageWidth * 0.1,
HALF_MAX_NO_OF_MINOR_TICKS = maxNoOfMinorTicks / 2,
MAX_VALUE_ROUNDED = parseFloat(maxValue.toFixed(2)),
i;
backgroundColor.labelColor.setAlpha(1);
ctx.save();
ctx.textAlign = 'center';
ctx.textBaseline = 'middle';
ctx.font = fontSize + 'px' + stdFontName;
ctx.strokeStyle = backgroundColor.labelColor.getRgbaColor();
ctx.fillStyle = backgroundColor.labelColor.getRgbaColor();
ctx.translate(centerX, centerY);
ctx.rotate(rotationOffset);
if (gaugeType.type === 'type1' || gaugeType.type === 'type2') {
TEXT_WIDTH = imageWidth * 0.04;
}
for (i = minValue; parseFloat(i.toFixed(2)) <= MAX_VALUE_ROUNDED; i += minorTickSpacing) {
textRotationAngle = rotationStep + HALF_PI;
majorTickCounter++;
// Draw major tickmarks
if (majorTickCounter === maxNoOfMinorTicks) {
ctx.lineWidth = 1.5;
ctx.beginPath();
ctx.moveTo(OUTER_POINT, 0);
ctx.lineTo(MAJOR_INNER_POINT, 0);
ctx.closePath();
ctx.stroke();
ctx.save();
ctx.translate(TEXT_TRANSLATE_X, 0);
switch (tickLabelOrientation.type) {
case 'horizontal':
textRotationAngle = -alpha;
break;
case 'tangent':
textRotationAngle = (alpha <= HALF_PI + PI ? PI : 0);
break;
case 'normal':
/* falls through */
default:
textRotationAngle = HALF_PI;
break;
}
ctx.rotate(textRotationAngle);
switch (labelNumberFormat.format) {
case 'fractional':
ctx.fillText((valueCounter.toFixed(fractionalScaleDecimals)), 0, 0, TEXT_WIDTH);
break;
case 'scientific':
ctx.fillText((valueCounter.toPrecision(2)), 0, 0, TEXT_WIDTH);
break;
case 'standard':
/* falls through */
default:
ctx.fillText((valueCounter.toFixed(0)), 0, 0, TEXT_WIDTH);
break;
}
ctx.translate(-TEXT_TRANSLATE_X, 0);
ctx.restore();
valueCounter += majorTickSpacing;
majorTickCounter = 0;
ctx.rotate(rotationStep);
alpha += rotationStep;
continue;
}
// Draw tickmark every minor tickmark spacing
if (0 === maxNoOfMinorTicks % 2 && majorTickCounter === (HALF_MAX_NO_OF_MINOR_TICKS)) {
ctx.lineWidth = 1;
ctx.beginPath();
ctx.moveTo(OUTER_POINT, 0);
ctx.lineTo(MED_INNER_POINT, 0);
ctx.closePath();
ctx.stroke();
} else {
ctx.lineWidth = 0.5;
ctx.beginPath();
ctx.moveTo(OUTER_POINT, 0);
ctx.lineTo(MINOR_INNER_POINT, 0);
ctx.closePath();
ctx.stroke();
}
ctx.rotate(rotationStep);
alpha += rotationStep;
}
/*
// Logarithmic scale
var tmp = 0.1;
var minValueLog10 = 0.1;
var maxValueLog10 = parseInt(Math.pow(10, Math.ceil(Math.log10(maxValue))));
var drawLabel = true;
angleStep = angleRange / (maxValueLog10 - minValueLog10)
for (var scaleFactor = minValueLog10 ; scaleFactor <= maxValueLog10 ; scaleFactor *= 10)
{
for (var i = parseFloat((1 * scaleFactor).toFixed(1)) ; i < parseFloat((10 * scaleFactor).toFixed(1)) ; i += scaleFactor)
{
textRotationAngle =+ rotationStep + HALF_PI;
if(drawLabel)
{
ctx.lineWidth = 1.5;
ctx.beginPath();
ctx.moveTo(imageWidth * 0.38,0);
ctx.lineTo(imageWidth * 0.35,0);
ctx.closePath();
ctx.stroke();
ctx.save();
ctx.translate(imageWidth * 0.31, 0);
ctx.rotate(textRotationAngle);
ctx.fillText(parseFloat((i).toFixed(1)), 0, 0, imageWidth * 0.0375);
ctx.translate(-imageWidth * 0.31, 0);
ctx.restore();
drawLabel = false;
}
else
{
ctx.lineWidth = 0.5;
ctx.beginPath();
ctx.moveTo(imageWidth * 0.38,0);
ctx.lineTo(imageWidth * 0.36,0);
ctx.closePath();
ctx.stroke();
}
//doc.write('log10 scale value: ' + parseFloat((i).toFixed(1)) + '<br>');
//Math.log10(parseFloat((i).toFixed(1)));
ctx.rotate(rotationStep);
}
tmp = 0.1;
drawLabel = true;
}
*/
ctx.translate(-centerX, -centerY);
ctx.restore();
};
// ************** Initialization ********************
// Draw all static painting code to background
var init = function (parameters) {
parameters = parameters || {};
var drawFrame = (undefined === parameters.frame ? false : parameters.frame);
var drawBackground = (undefined === parameters.background ? false : parameters.background);
var drawLed = (undefined === parameters.led ? false : parameters.led);
var drawUserLed = (undefined === parameters.userLed ? false : parameters.userLed);
var drawPointer = (undefined === parameters.pointer ? false : parameters.pointer);
var drawForeground = (undefined === parameters.foreground ? false : parameters.foreground);
var drawTrend = (undefined === parameters.trend ? false : parameters.trend);
var drawOdo = (undefined === parameters.odo ? false : parameters.odo);
initialized = true;
// Calculate the current min and max values and the range
calculate();
// Create frame in frame buffer (backgroundBuffer)
if (drawFrame && frameVisible) {
drawRadialFrameImage(frameContext, frameDesign, centerX, centerY, imageWidth, imageHeight);
}
// Create background in background buffer (backgroundBuffer)
if (drawBackground && backgroundVisible) {
drawRadialBackgroundImage(backgroundContext, backgroundColor, centerX, centerY, imageWidth, imageHeight);
// Create custom layer in background buffer (backgroundBuffer)
drawRadialCustomImage(backgroundContext, customLayer, centerX, centerY, imageWidth, imageHeight);
}
if (drawLed) {
// Draw LED ON in ledBuffer_ON
ledContextOn.drawImage(createLedImage(Math.ceil(size * 0.093457), 1, ledColor), 0, 0);
// Draw LED OFF in ledBuffer_OFF
ledContextOff.drawImage(createLedImage(Math.ceil(size * 0.093457), 0, ledColor), 0, 0);
}
if (drawUserLed) {
// Draw user LED ON in userLedBuffer_ON
userLedContextOn.drawImage(createLedImage(Math.ceil(size * 0.093457), 1, userLedColor), 0, 0);
// Draw user LED OFF in userLedBuffer_OFF
userLedContextOff.drawImage(createLedImage(Math.ceil(size * 0.093457), 0, userLedColor), 0, 0);
}
// Draw min measured value indicator in minMeasuredValueBuffer
if (minMeasuredValueVisible) {
minMeasuredValueCtx.drawImage(createMeasuredValueImage(Math.ceil(size * 0.028037), steelseries.ColorDef.BLUE.dark.getRgbaColor(), true, true), 0, 0);
}
// Draw max measured value indicator in maxMeasuredValueBuffer
if (maxMeasuredValueVisible) {
maxMeasuredValueCtx.drawImage(createMeasuredValueImage(Math.ceil(size * 0.028037), steelseries.ColorDef.RED.medium.getRgbaColor(), true), 0, 0);
}
// Create alignment posts in background buffer (backgroundBuffer)
if (drawBackground && backgroundVisible) {
drawPostsImage(backgroundContext);
// Create section in background buffer (backgroundBuffer)
if (null !== section && 0 < section.length) {
var sectionIndex = section.length;
do {
sectionIndex--;
drawAreaSectionImage(backgroundContext, section[sectionIndex].start, section[sectionIndex].stop, section[sectionIndex].color, false);
}
while (0 < sectionIndex);
}
// Create area in background buffer (backgroundBuffer)
if (null !== area && 0 < area.length) {
var areaIndex = area.length;
do {
areaIndex--;
drawAreaSectionImage(backgroundContext, area[areaIndex].start, area[areaIndex].stop, area[areaIndex].color, true);
}
while (0 < areaIndex);
}
// Create tickmarks in background buffer (backgroundBuffer)
drawTickmarksImage(backgroundContext, labelNumberFormat);
// Create title in background buffer (backgroundBuffer)
drawTitleImage(backgroundContext, imageWidth, imageHeight, titleString, unitString, backgroundColor, true, true);
}
// Draw threshold image to background context
if (drawBackground && thresholdVisible) {
backgroundContext.save();
backgroundContext.translate(centerX, centerY);
backgroundContext.rotate(rotationOffset + (threshold - minValue) * angleStep + HALF_PI);
backgroundContext.translate(-centerX, -centerY);
backgroundContext.drawImage(createThresholdImage(), imageWidth * 0.475, imageHeight * 0.13);
backgroundContext.translate(centerX, centerY);
backgroundContext.restore();
}
// Create lcd background if selected in background buffer (backgroundBuffer)
if (drawBackground && lcdVisible) {
if (useOdometer && drawOdo) {
odoGauge = new steelseries.Odometer('', {
_context: odoContext,
height: size * 0.075,
decimals: odometerParams.decimals,
digits: (odometerParams.digits === undefined ? 5 : odometerParams.digits),
valueForeColor: odometerParams.valueForeColor,
valueBackColor: odometerParams.valueBackColor,
decimalForeColor: odometerParams.decimalForeColor,
decimalBackColor: odometerParams.decimalBackColor,
font: odometerParams.font,
value: value
});
odoPosX = (imageWidth - odoBuffer.width) / 2;
} else if (!useOdometer) {
lcdBuffer = createLcdBackgroundImage(lcdWidth, lcdHeight, lcdColor);
backgroundContext.drawImage(lcdBuffer, lcdPosX, lcdPosY);
}
}
// Create pointer image in pointer buffer (contentBuffer)
if (drawPointer) {
drawPointerImage(pointerContext, imageWidth, pointerType, pointerColor, backgroundColor.labelColor);
}
// Create foreground in foreground buffer (foregroundBuffer)
if (drawForeground && foregroundVisible) {
var knobVisible = (pointerType.type === 'type15' || pointerType.type === 'type16' ? false : true);
drawRadialForegroundImage(foregroundContext, foregroundType, imageWidth, imageHeight, knobVisible, knobType, knobStyle, gaugeType);
}
// Create the trend indicator buffers
if (drawTrend && trendVisible) {
trendUpBuffer = createTrendIndicator(trendSize, steelseries.TrendState.UP, trendColors);
trendSteadyBuffer = createTrendIndicator(trendSize, steelseries.TrendState.STEADY, trendColors);
trendDownBuffer = createTrendIndicator(trendSize, steelseries.TrendState.DOWN, trendColors);
trendOffBuffer = createTrendIndicator(trendSize, steelseries.TrendState.OFF, trendColors);
}
};
var resetBuffers = function (buffers) {
buffers = buffers || {};
var resetFrame = (undefined === buffers.frame ? false : buffers.frame);
var resetBackground = (undefined === buffers.background ? false : buffers.background);
var resetLed = (undefined === buffers.led ? false : buffers.led);
var resetUserLed = (undefined === buffers.userLed ? false : buffers.userLed);
var resetPointer = (undefined === buffers.pointer ? false : buffers.pointer);
var resetForeground = (undefined === buffers.foreground ? false : buffers.foreground);
if (resetFrame) {
frameBuffer.width = size;
frameBuffer.height = size;
frameContext = frameBuffer.getContext('2d');
}
if (resetBackground) {
backgroundBuffer.width = size;
backgroundBuffer.height = size;
backgroundContext = backgroundBuffer.getContext('2d');
}
if (resetLed) {
ledBufferOn.width = Math.ceil(size * 0.093457);
ledBufferOn.height = Math.ceil(size * 0.093457);
ledContextOn = ledBufferOn.getContext('2d');
ledBufferOff.width = Math.ceil(size * 0.093457);
ledBufferOff.height = Math.ceil(size * 0.093457);
ledContextOff = ledBufferOff.getContext('2d');
// Buffer for current led painting code
ledBuffer = ledBufferOff;
}
if (resetUserLed) {
userLedBufferOn.width = Math.ceil(size * 0.093457);
userLedBufferOn.height = Math.ceil(size * 0.093457);
userLedContextOn = userLedBufferOn.getContext('2d');
userLedBufferOff.width = Math.ceil(size * 0.093457);
userLedBufferOff.height = Math.ceil(size * 0.093457);
userLedContextOff = userLedBufferOff.getContext('2d');
// Buffer for current user led painting code
userLedBuffer = userLedBufferOff;
}
if (resetPointer) {
pointerBuffer.width = size;
pointerBuffer.height = size;
pointerContext = pointerBuffer.getContext('2d');
}
if (resetForeground) {
foregroundBuffer.width = size;
foregroundBuffer.height = size;
foregroundContext = foregroundBuffer.getContext('2d');
}
};
var toggleAndRepaintLed = function () {
if (ledVisible) {
if (ledBuffer === ledBufferOn) {
ledBuffer = ledBufferOff;
} else {
ledBuffer = ledBufferOn;
}
if (!repainting) {
repainting = true;
requestAnimFrame(self.repaint);
}
}
};
var toggleAndRepaintUserLed = function () {
if (userLedVisible) {
if (userLedBuffer === userLedBufferOn) {
userLedBuffer = userLedBufferOff;
} else {
userLedBuffer = userLedBufferOn;
}
if (!repainting) {
repainting = true;
requestAnimFrame(self.repaint);
}
}
};
var blink = function (blinking) {
if (blinking) {
ledTimerId = setInterval(toggleAndRepaintLed, 1000);
} else {
clearInterval(ledTimerId);
ledBuffer = ledBufferOff;
}
};
var blinkUser = function (blinking) {
if (blinking) {
userLedTimerId = setInterval(toggleAndRepaintUserLed, 1000);
} else {
clearInterval(userLedTimerId);
userLedBuffer = userLedBufferOff;
}
};
//************************************ Public methods **************************************
this.setValue = function (newValue) {
newValue = parseFloat(newValue);
var targetValue = newValue < minValue ? minValue : (newValue > maxValue ? maxValue : newValue);
if (value !== targetValue) {
value = targetValue;
if (value > maxMeasuredValue) {
maxMeasuredValue = value;
}
if (value < minMeasuredValue) {
minMeasuredValue = value;
}
if ((value >= threshold && !ledBlinking && thresholdRising) ||
(value <= threshold && !ledBlinking && !thresholdRising)) {
ledBlinking = true;
blink(ledBlinking);
if (playAlarm) {
audioElement.play();
}
} else if ((value < threshold && ledBlinking && thresholdRising) ||
(value > threshold && ledBlinking && !thresholdRising)) {
ledBlinking = false;
blink(ledBlinking);
if (playAlarm) {
audioElement.pause();
}
}
this.repaint();
}
return this;
};
this.getValue = function () {
return value;
};
this.setOdoValue = function (newValue) {
newValue = parseFloat(newValue);
var targetValue = (newValue < 0 ? 0 : newValue);
if (odoValue !== targetValue) {
odoValue = targetValue;
this.repaint();
}
return this;
};
this.getOdoValue = function () {
return odoValue;
};
this.setValueAnimated = function (newValue) {
newValue = parseFloat(newValue);
var targetValue = (newValue < minValue ? minValue : (newValue > maxValue ? maxValue : newValue)),
gauge = this,
time;
if (value !== targetValue) {
if (undefined !== tween && tween.isPlaying) {
tween.stop();
}
time = fullScaleDeflectionTime * Math.abs(targetValue - value) / (maxValue - minValue);
time = Math.max(time, fullScaleDeflectionTime / 5);
tween = new Tween({}, '', Tween.regularEaseInOut, value, targetValue, time);
//tween = new Tween({}, '', Tween.regularEaseInOut, value, targetValue, 1);
//tween = new Tween(new Object(), '', Tween.strongEaseInOut, value, targetValue, 1);
tween.onMotionChanged = function (event) {
value = event.target._pos;
if ((value >= threshold && !ledBlinking && thresholdRising) ||
(value <= threshold && !ledBlinking && !thresholdRising)) {
ledBlinking = true;
blink(ledBlinking);
if (playAlarm) {
audioElement.play();
}
} else if ((value < threshold && ledBlinking && thresholdRising) ||
(value > threshold && ledBlinking && !thresholdRising)) {
ledBlinking = false;
blink(ledBlinking);
if (playAlarm) {
audioElement.pause();
}
}
if (value > maxMeasuredValue) {
maxMeasuredValue = value;
}
if (value < minMeasuredValue) {
minMeasuredValue = value;
}
if (!repainting) {
repainting = true;
requestAnimFrame(gauge.repaint);
}
};
tween.start();
}
return this;
};
this.resetMinMeasuredValue = function () {
minMeasuredValue = value;
this.repaint();
};
this.resetMaxMeasuredValue = function () {
maxMeasuredValue = value;
this.repaint();
return this;
};
this.setMinMeasuredValueVisible = function (visible) {
minMeasuredValueVisible = !!visible;
this.repaint();
return this;
};
this.setMaxMeasuredValueVisible = function (visible) {
maxMeasuredValueVisible = !!visible;
this.repaint();
return this;
};
this.setMaxMeasuredValue = function (newValue) {
newValue = parseFloat(newValue);
var targetValue = newValue < minValue ? minValue : (newValue > maxValue ? maxValue : newValue);
maxMeasuredValue = targetValue;
this.repaint();
return this;
};
this.setMinMeasuredValue = function (newValue) {
newValue = parseFloat(newValue);
var targetValue = newValue < minValue ? minValue : (newValue > maxValue ? maxValue : newValue);
minMeasuredValue = targetValue;
this.repaint();
return this;
};
this.setTitleString = function (title) {
titleString = title;
resetBuffers({background: true});
init({background: true});
this.repaint();
return this;
};
this.setUnitString = function (unit) {
unitString = unit;
resetBuffers({background: true});
init({background: true});
this.repaint();
return this;
};
this.setMinValue = function (value) {
minValue = parseFloat(value);
resetBuffers({frame: true,
background: true});
init({frame: true,
background: true});
this.repaint();
return this;
};
this.getMinValue = function () {
return minValue;
};
this.setMaxValue = function (value) {
maxValue = parseFloat(value);
resetBuffers({frame: true,