765 lines
25 KiB
JavaScript
765 lines
25 KiB
JavaScript
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let browserCanvasContext // The context of the canvas object.
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let stepsInitializationCounter = 0 // This counter the initialization steps required to be able to turn off the splash screen.
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let marketInitializationCounter = 0 // This counter the initialization of markets required to be able to turn off the splash screen.
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let splashScreenNeeded = true
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function newCanvas () {
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const MODULE_NAME = 'Canvas'
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const INFO_LOG = false
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const ERROR_LOG = true
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const logger = newWebDebugLog()
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logger.fileName = MODULE_NAME
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/* Mouse event related variables. */
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let containerDragStarted = false
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let floatingObjectDragStarted = false
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let floatingObjectBeingDragged
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let containerBeingDragged
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let viewPortBeingDragged = false
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let ignoreNextClick = false
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let dragVector = {
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downX: 0,
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downY: 0,
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upX: 0,
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upY: 0
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}
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/* canvas object */
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let thisObject = {
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eventHandler: undefined,
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topSpace: undefined,
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chartSpace: undefined,
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floatingSpace: undefined,
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panelsSpace: undefined,
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bottomSpace: undefined,
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strategySpace: undefined,
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animation: undefined,
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initialize: initialize,
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finalize: finalize
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}
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thisObject.eventHandler = newEventHandler()
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let splashScreen
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let lastContainerMouseOver
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return thisObject
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/*
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The canvas object represents a layer on top of the browser canvas object.
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Graphically, thiscanvas object has 5 spaces:
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1. The "Top Space": It is where Team and User information is displayed.
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2. The "Chart Space": It is where the charts are plotted.
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3. The "Floating Space": It is where floating elements live. There is a physics engine for this layer that allows these elements to flow.
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4. The "Panels Space": It is where panels live. --> This space has yet to be develop, currently pannels are somehow at the Chart Space.
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5. The "Bottom Space": Includes UIControls that other panels can add there.
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6. The "Strategy Spece": Functionality to manage Strategies
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All these spaces are child objects of the Canvas object.
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Canvas
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---> topSpace
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---> chartSpace
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---> flaotingSpace
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---> panelsSpace
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---> bottomSpace
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---> strategySpace
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*/
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function finalize () {
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try {
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if (INFO_LOG === true) { logger.write('[INFO] finalize -> Entering function.') }
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thisObject.chartSpace.finalize()
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thisObject.floatingSpace.finalize()
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browserCanvas.removeEventListener('mousedown', onMouseDown, false)
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browserCanvas.removeEventListener('mouseup', onMouseUp, false)
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browserCanvas.removeEventListener('mousemove', onMouseMove, false)
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browserCanvas.removeEventListener('click', onMouseClick, false)
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browserCanvas.removeEventListener('mouseout', onMouseOut, false)
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/* Mouse wheel events. */
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if (browserCanvas.removeEventListener) {
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// IE9, Chrome, Safari, Opera
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browserCanvas.removeEventListener('mousewheel', onMouseWheel, false)
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// Firefox
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browserCanvas.removeEventListener('DOMMouseScroll', onMouseWheel, false)
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}
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// IE 6/7/8
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else browserCanvas.detachEvent('onmousewheel', onMouseWheel)
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} catch (err) {
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if (ERROR_LOG === true) { logger.write('[ERROR] finalize -> err = ' + err.stack) }
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}
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}
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async function initialize (callBackFunction) {
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try {
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if (INFO_LOG === true) { logger.write('[INFO] initialize -> Entering function.') }
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initializeBrowserCanvas()
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addCanvasEvents()
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/* Instantiate all the children spaces of Canvas object */
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thisObject.topSpace = newTopSpace()
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await thisObject.topSpace.initialize()
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thisObject.strategySpace = newStrategySpace()
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await thisObject.strategySpace.initialize()
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thisObject.bottomSpace = newBottomSpace()
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thisObject.bottomSpace.initialize()
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thisObject.panelsSpace = newPanelsSpace()
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thisObject.panelsSpace.initialize()
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thisObject.floatingSpace = newFloatingSpace()
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thisObject.floatingSpace.initialize()
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thisObject.chartSpace = newChartSpace()
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thisObject.chartSpace.initialize(onCharSpaceInitialized)
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function onCharSpaceInitialized (err) {
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try {
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if (INFO_LOG === true) { logger.write('[INFO] initialize -> onCharSpaceInitialized -> Entering function.') }
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viewPort.raiseEvents() // These events will impacts on objects just initialized.
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} catch (err) {
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if (ERROR_LOG === true) { logger.write('[ERROR] initialize -> onCharSpaceInitialized -> err = ' + err.stack) }
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callBackFunction(GLOBAL.DEFAULT_FAIL_RESPONSE)
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}
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}
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/* Splash Screen */
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splashScreen = newSplashScreen()
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splashScreen.initialize()
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let animation = newAnimation()
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animation.initialize(onAnimationInitialized)
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function onAnimationInitialized (err) {
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try {
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if (INFO_LOG === true) { logger.write('[INFO] initialize -> onAnimationInitialized -> Entering function.') }
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thisObject.animation = animation
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/* Here we add all the functions that will be called during the animation cycle. */
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animation.addCallBackFunction('Floating Space Draw', thisObject.floatingSpace.draw, onFunctionAdded)
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animation.addCallBackFunction('Floating Space Physics', thisObject.floatingSpace.physics, onFunctionAdded)
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animation.addCallBackFunction('ViewPort Draw', viewPort.draw, onFunctionAdded)
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animation.addCallBackFunction('Chart Space Background', thisObject.chartSpace.drawBackground, onFunctionAdded)
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animation.addCallBackFunction('Chart Space Draw', thisObject.chartSpace.draw, onFunctionAdded)
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animation.addCallBackFunction('Chart Space Physics', thisObject.chartSpace.physics, onFunctionAdded)
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animation.addCallBackFunction('Panels Space', thisObject.panelsSpace.draw, onFunctionAdded)
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animation.addCallBackFunction('ViewPort Animate', viewPort.animate, onFunctionAdded)
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animation.addCallBackFunction('Top Space Draw', thisObject.topSpace.draw, onFunctionAdded)
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animation.addCallBackFunction('Bottom Space Draw', thisObject.bottomSpace.draw, onFunctionAdded)
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animation.addCallBackFunction('Bottom Space Physics', thisObject.bottomSpace.physics, onFunctionAdded)
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animation.addCallBackFunction('Strategy Space Draw', thisObject.strategySpace.draw, onFunctionAdded)
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animation.addCallBackFunction('Splash Screen Draw', splashScreen.draw, onFunctionAdded)
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animation.start(onStart)
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function onFunctionAdded (err) {
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try {
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if (INFO_LOG === true) { logger.write('[INFO] initialize -> onAnimationInitialized -> onFunctionAdded -> Entering function.') }
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if (err.result === GLOBAL.DEFAULT_FAIL_RESPONSE.result) {
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animation.stop()
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if (ERROR_LOG === true) { logger.write('[ERROR] initialize -> onAnimationInitialized -> onFunctionAdded -> Animation Stopped since a vital funtion could not be added.') }
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/* Display some Error Page here. */
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}
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} catch (err) {
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if (ERROR_LOG === true) { logger.write('[ERROR] initialize -> onAnimationInitialized -> onFunctionAdded -> err = ' + err.stack) }
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callBackFunction(GLOBAL.DEFAULT_FAIL_RESPONSE)
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}
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}
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function onStart (err) {
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try {
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if (INFO_LOG === true) { logger.write('[INFO] initialize -> onAnimationInitialized -> onStart -> Entering function.') }
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switch (err.result) {
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case GLOBAL.DEFAULT_OK_RESPONSE.result: {
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if (INFO_LOG === true) { logger.write('[INFO] initialize -> onAnimationInitialized -> onStart -> Received OK Response.') }
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callBackFunction(GLOBAL.DEFAULT_OK_RESPONSE)
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return
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}
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case GLOBAL.DEFAULT_FAIL_RESPONSE.result: {
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if (INFO_LOG === true) { logger.write('[INFO] initialize -> onAnimationInitialized -> onStart -> Received FAIL Response.') }
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callBackFunction(GLOBAL.DEFAULT_FAIL_RESPONSE)
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return
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}
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default: {
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if (INFO_LOG === true) { logger.write('[INFO] initialize -> onAnimationInitialized -> onStart -> Received Unexpected Response.') }
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callBackFunction(err)
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return
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}
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}
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} catch (err) {
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if (ERROR_LOG === true) { logger.write('[ERROR] initialize -> onAnimationInitialized -> onStart -> err = ' + err.stack) }
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callBackFunction(GLOBAL.DEFAULT_FAIL_RESPONSE)
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}
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}
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} catch (err) {
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if (ERROR_LOG === true) { logger.write('[ERROR] initialize -> onAnimationInitialized -> err = ' + err.stack) }
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callBackFunction(GLOBAL.DEFAULT_FAIL_RESPONSE)
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}
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}
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} catch (err) {
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if (ERROR_LOG === true) { logger.write('[ERROR] initialize -> err = ' + err.stack) }
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callBackFunction(GLOBAL.DEFAULT_FAIL_RESPONSE)
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}
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}
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function initializeBrowserCanvas () {
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try {
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if (INFO_LOG === true) { logger.write('[INFO] initializeBrowserCanvas -> Entering function.') }
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browserCanvasContext = browserCanvas.getContext('2d')
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// browserCanvasContext.font = 'italic small-caps bold 12px Saira'
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browserCanvasContext.font = 'Saira'
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viewPort.initialize()
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} catch (err) {
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if (ERROR_LOG === true) { logger.write('[ERROR] initializeBrowserCanvas -> err = ' + err.stack) }
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}
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}
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function addCanvasEvents () {
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try {
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if (INFO_LOG === true) { logger.write('[INFO] addCanvasEvents -> Entering function.') }
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/* Mouse down and up events to control the drag of the canvas. */
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browserCanvas.addEventListener('mousedown', onMouseDown, false)
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browserCanvas.addEventListener('mouseup', onMouseUp, false)
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browserCanvas.addEventListener('mousemove', onMouseMove, false)
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browserCanvas.addEventListener('click', onMouseClick, false)
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browserCanvas.addEventListener('mouseout', onMouseOut, false)
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/* Mouse wheel events. */
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if (browserCanvas.addEventListener) {
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// IE9, Chrome, Safari, Opera
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browserCanvas.addEventListener('mousewheel', onMouseWheel, false)
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// Firefox
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browserCanvas.addEventListener('DOMMouseScroll', onMouseWheel, false)
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}
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// IE 6/7/8
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else browserCanvas.attachEvent('onmousewheel', onMouseWheel)
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// Disables the context menu when you right mouse click the canvas.
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browserCanvas.oncontextmenu = function (e) {
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e.preventDefault()
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}
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} catch (err) {
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if (ERROR_LOG === true) { logger.write('[ERROR] addCanvasEvents -> err = ' + err.stack) }
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}
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}
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function onMouseDown (event) {
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try {
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if (INFO_LOG === true) { logger.write('[INFO] onMouseDown -> Entering function.') }
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/*
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There are four types of elements that can be dragged.
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1. Panels.
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2. Floating Elements (Currently only FloatingObjects).
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3. Charts.
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4. The Viewport.
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We eveluate each space in order to see if they are holding the element being dragged, and we fallout at the Viewport.
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*/
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let point = {
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x: event.pageX,
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y: event.pageY - window.canvasApp.topMargin
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}
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dragVector.downX = point.x
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dragVector.downY = point.y
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let container
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/* We check if the mouse is over an element of the Strategy Space / */
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container = thisObject.strategySpace.getContainer(point)
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if (container !== undefined && container.isDraggeable === true) {
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containerBeingDragged = container
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containerDragStarted = true
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return
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}
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if (container !== undefined && container.isDraggeable === false) {
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return
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}
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/* We check if the mouse is over an element of the Top Space / */
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container = thisObject.topSpace.getContainer(point)
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if (container !== undefined && container.isDraggeable === true) {
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containerBeingDragged = container
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containerDragStarted = true
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return
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}
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/* We check if the mouse is over an element of the Bottom Space / */
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container = thisObject.bottomSpace.getContainer(point)
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if (container !== undefined && container.isDraggeable === true) {
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containerBeingDragged = container
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containerDragStarted = true
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return
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}
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/* We check if the mouse is over a panel/ */
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container = thisObject.panelsSpace.getContainer(point)
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if (container !== undefined && container.isDraggeable === true && event.button === 2) {
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containerBeingDragged = container
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containerDragStarted = true
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return
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}
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if (container !== undefined && container.isClickeable === true) {
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/* We dont want to mess up with the click */
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return
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}
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/* we check if it is over any of the existing containers at the Chart Space. */
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container = thisObject.chartSpace.getContainer(point)
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if (container !== undefined) {
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if (container.isDraggeable === true) {
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containerBeingDragged = container
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containerDragStarted = true
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return
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} else {
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viewPortBeingDragged = true
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return
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}
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}
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container = thisObject.floatingSpace.getContainer(point)
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if (container !== undefined && container.isDraggeable === true) {
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containerBeingDragged = container
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containerDragStarted = true
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floatingObjectDragStarted = true
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return
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}
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if (container !== undefined && container.isClickeable === true) {
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/* We dont want to mess up with the click */
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return
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}
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} catch (err) {
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if (ERROR_LOG === true) { logger.write('[ERROR] onMouseDown -> err = ' + err.stack) }
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}
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}
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function onMouseClick (event) {
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try {
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if (INFO_LOG === true) { logger.write('[INFO] onMouseClick -> Entering function.') }
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if (ignoreNextClick === true) {
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ignoreNextClick = false
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return
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}
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let point = {
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x: event.pageX,
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y: event.pageY - window.canvasApp.topMargin
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}
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let container
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/* We check if the mouse is over an element of the Strategy Space / */
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container = thisObject.strategySpace.getContainer(point)
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if (container !== undefined && container.isClickeable === true) {
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container.eventHandler.raiseEvent('onMouseClick', point)
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return
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}
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/* We check if the mouse is over an element of the Top Space / */
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container = thisObject.topSpace.getContainer(point)
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if (container !== undefined && container.isClickeable === true) {
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container.eventHandler.raiseEvent('onMouseClick', point)
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return
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}
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/* We check if the mouse is over an element of the Bottom Space / */
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container = thisObject.bottomSpace.getContainer(point)
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if (container !== undefined && container.isClickeable === true) {
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container.eventHandler.raiseEvent('onMouseClick', point)
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return
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}
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/* We check if the mouse is over a panel/ */
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container = thisObject.panelsSpace.getContainer(point)
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if (container !== undefined && container.isClickeable === true) {
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container.eventHandler.raiseEvent('onMouseClick', point)
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return
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}
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/* If it is not, then we check if it is over any of the existing containers at the Chart Space. */
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container = thisObject.chartSpace.getContainer(point)
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if (container !== undefined && container.isClickeable === true) {
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container.eventHandler.raiseEvent('onMouseClick', point)
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return
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}
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/* We check if the mouse is over a floatingObject/ */
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container = thisObject.floatingSpace.getContainer(point)
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if (container !== undefined && container.isClickeable === true) {
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container.eventHandler.raiseEvent('onMouseClick', point)
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return
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}
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} catch (err) {
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if (ERROR_LOG === true) { logger.write('[ERROR] onMouseClick -> err = ' + err.stack) }
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}
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}
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function onMouseOut (event) {
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deactivateDragging(event)
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/* When the mouse leaves the canvas, our elements needs to react to the fact that the mouse is over a far away place */
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let thisEvent = {
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pageX: 100000000000,
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pageY: 100000000000
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}
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onMouseOver(thisEvent)
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}
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function onMouseUp (event) {
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deactivateDragging(event)
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}
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function deactivateDragging (event) {
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try {
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if (containerDragStarted || viewPortBeingDragged || floatingObjectDragStarted) {
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thisObject.eventHandler.raiseEvent('Drag Finished', undefined)
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}
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if (
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containerDragStarted ||
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floatingObjectDragStarted ||
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viewPortBeingDragged
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) {
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ignoreNextClick = true
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}
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/* Turn off all the possible things that can be dragged. */
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containerDragStarted = false
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floatingObjectDragStarted = false
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viewPortBeingDragged = false
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containerBeingDragged = undefined
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browserCanvas.style.cursor = 'auto'
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} catch (err) {
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if (ERROR_LOG === true) { logger.write('[ERROR] onMouseUp -> err = ' + err.stack) }
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}
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}
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function onMouseMove (event) {
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try {
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let point = {
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x: event.pageX,
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y: event.pageY - window.canvasApp.topMargin
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}
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viewPort.mousePosition.x = point.x
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viewPort.mousePosition.y = point.y
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if (containerDragStarted === true || floatingObjectDragStarted === true || viewPortBeingDragged === true) {
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if (floatingObjectDragStarted === true) {
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let targetContainer = thisObject.floatingSpace.getContainer(point)
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if (targetContainer !== undefined) {
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if (targetContainer.id !== containerBeingDragged.id) {
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containerBeingDragged = undefined
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containerDragStarted = false
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floatingObjectDragStarted = false
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browserCanvas.style.cursor = 'auto'
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ignoreNextClick = true
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return
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}
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} else {
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containerDragStarted = false
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containerBeingDragged = undefined
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floatingObjectDragStarted = false
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browserCanvas.style.cursor = 'auto'
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ignoreNextClick = true
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return
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}
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}
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dragVector.upX = point.x
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dragVector.upY = point.y
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checkDrag(event)
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} else {
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onMouseOver(event)
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}
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|
} catch (err) {
|
|
if (ERROR_LOG === true) { logger.write('[ERROR] onMouseMove -> err = ' + err.stack) }
|
|
}
|
|
}
|
|
|
|
function onMouseOver (event) {
|
|
try {
|
|
/* Then we check who is the current object underneeth the mounse. */
|
|
|
|
let point = {
|
|
x: event.pageX,
|
|
y: event.pageY - window.canvasApp.topMargin
|
|
}
|
|
|
|
let container
|
|
|
|
/* We check if the mouse is over an element of the Strategy Space / */
|
|
|
|
if (thisObject.strategySpace !== undefined) {
|
|
container = thisObject.strategySpace.getContainer(point)
|
|
|
|
if (container !== undefined && container.detectMouseOver === true) {
|
|
containerFound()
|
|
return
|
|
}
|
|
}
|
|
|
|
/* We check if the mouse is over an element of the Top Space / */
|
|
|
|
if (thisObject.topSpace !== undefined) {
|
|
container = thisObject.topSpace.getContainer(point)
|
|
|
|
if (container !== undefined && container.detectMouseOver === true) {
|
|
containerFound()
|
|
return
|
|
}
|
|
}
|
|
|
|
/* We check if the mouse is over an element of the Bottom Space / */
|
|
|
|
if (thisObject.bottomSpace !== undefined) {
|
|
container = thisObject.bottomSpace.getContainer(point)
|
|
|
|
if (container !== undefined && container.detectMouseOver === true) {
|
|
containerFound()
|
|
return
|
|
}
|
|
}
|
|
|
|
/* We check if the mouse is over a panel/ */
|
|
|
|
if (thisObject.panelsSpace !== undefined) {
|
|
container = thisObject.panelsSpace.getContainer(point)
|
|
|
|
if (container !== undefined && container.detectMouseOver === true) {
|
|
containerFound()
|
|
return
|
|
}
|
|
}
|
|
|
|
/* If it is not, then we check if it is over any of the existing containers at the Chart Space. */
|
|
|
|
if (thisObject.chartSpace !== undefined) {
|
|
container = thisObject.chartSpace.getContainer(point, GET_CONTAINER_PURPOSE.MOUSE_OVER)
|
|
|
|
if (container !== undefined && container.detectMouseOver === true) {
|
|
containerFound()
|
|
return
|
|
}
|
|
}
|
|
|
|
/* We check if the mouse is over a floatingObject/ */
|
|
if (thisObject.floatingSpace !== undefined) {
|
|
container = thisObject.floatingSpace.getContainer(point)
|
|
|
|
if (container !== undefined && container.detectMouseOver === true) {
|
|
containerFound()
|
|
return
|
|
}
|
|
}
|
|
|
|
function containerFound () {
|
|
if (lastContainerMouseOver !== undefined) {
|
|
if (container.id !== lastContainerMouseOver.id) {
|
|
lastContainerMouseOver.eventHandler.raiseEvent('onMouseNotOver', point)
|
|
}
|
|
}
|
|
|
|
container.eventHandler.raiseEvent('onMouseOver', point)
|
|
lastContainerMouseOver = container
|
|
}
|
|
} catch (err) {
|
|
if (ERROR_LOG === true) { logger.write('[ERROR] onMouseOver -> err = ' + err.stack) }
|
|
}
|
|
}
|
|
|
|
function onMouseWheel (event) {
|
|
try {
|
|
if (INFO_LOG === true) { logger.write('[INFO] onMouseWheel -> Entering function.') }
|
|
|
|
// cross-browser wheel delta
|
|
var event = window.event || event // old IE support
|
|
let delta = Math.max(-1, Math.min(1, event.wheelDelta || -event.detail))
|
|
|
|
/* We try first with panels. */
|
|
|
|
let point = {
|
|
x: event.pageX,
|
|
y: event.pageY - window.canvasApp.topMargin
|
|
}
|
|
|
|
event.mousePosition = point
|
|
let container
|
|
container = canvas.panelsSpace.getContainer({ x: point.x, y: point.y })
|
|
|
|
if (container !== undefined && container.isWheelable === true) {
|
|
container.eventHandler.raiseEvent('onMouseWheel', event)
|
|
return false // This instructs the browser not to take the event and scroll the page.
|
|
}
|
|
|
|
/* We try the Bottom Space. */
|
|
|
|
container = canvas.bottomSpace.getContainer({ x: point.x, y: point.y })
|
|
|
|
if (container !== undefined && container.isWheelable === true) {
|
|
container.eventHandler.raiseEvent('onMouseWheel', event)
|
|
return false // This instructs the browser not to take the event and scroll the page.
|
|
}
|
|
|
|
/* Chart Space. */
|
|
|
|
container = canvas.chartSpace.getContainer({ x: point.x, y: point.y }, GET_CONTAINER_PURPOSE.MOUSE_WHEEL)
|
|
if (container !== undefined && container.isWheelable === true) {
|
|
container.eventHandler.raiseEvent('onMouseWheel', event)
|
|
return false // This instructs the browser not to take the event and scroll the page.
|
|
}
|
|
|
|
if (container !== undefined) {
|
|
viewPort.applyZoom(delta)
|
|
return false
|
|
}
|
|
|
|
/* We try second with floating objects. */
|
|
|
|
container = canvas.floatingSpace.getContainer({ x: point.x, y: point.y })
|
|
|
|
if (container !== undefined && container.isWheelable === true) {
|
|
container.eventHandler.raiseEvent('onMouseWheel', event)
|
|
return false // This instructs the browser not to take the event and scroll the page.
|
|
}
|
|
|
|
return false
|
|
} catch (err) {
|
|
if (ERROR_LOG === true) { logger.write('[ERROR] onMouseWheel -> err = ' + err.stack) }
|
|
}
|
|
}
|
|
|
|
function checkDrag (event) {
|
|
try {
|
|
if (containerDragStarted === true || floatingObjectDragStarted === true || viewPortBeingDragged === true) {
|
|
let point = {
|
|
x: event.pageX,
|
|
y: event.pageY - window.canvasApp.topMargin
|
|
}
|
|
|
|
browserCanvas.style.cursor = 'grabbing'
|
|
thisObject.eventHandler.raiseEvent('Dragging', undefined)
|
|
|
|
if (containerDragStarted || viewPortBeingDragged) {
|
|
/* The parameters received have been captured with zoom applied. We must remove the zoom in order to correctly modify the displacement. */
|
|
|
|
let downCopy = {
|
|
x: dragVector.downX,
|
|
y: dragVector.downY
|
|
}
|
|
|
|
let downCopyNoTransf
|
|
downCopyNoTransf = viewPort.unzoomThisPoint(downCopy)
|
|
// downCopyNoTransf = containerBeingDragged.zoom.unzoomThisPoint(downCopyNoTransf);
|
|
|
|
let upCopy = {
|
|
x: dragVector.upX,
|
|
y: dragVector.upY
|
|
}
|
|
|
|
let upCopyNoTranf
|
|
upCopyNoTranf = viewPort.unzoomThisPoint(upCopy)
|
|
|
|
let displaceVector = {
|
|
x: dragVector.upX - dragVector.downX,
|
|
y: dragVector.upY - dragVector.downY
|
|
}
|
|
|
|
if (viewPortBeingDragged) {
|
|
viewPort.displace(displaceVector)
|
|
}
|
|
|
|
if (containerBeingDragged !== undefined) {
|
|
let moveSucceed = containerBeingDragged.moveTo(displaceVector)
|
|
if (moveSucceed === false) {
|
|
deactivateDragging(event)
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Finally we set the starting point of the new dragVector at this current point. */
|
|
|
|
dragVector.downX = dragVector.upX
|
|
dragVector.downY = dragVector.upY
|
|
}
|
|
} catch (err) {
|
|
if (ERROR_LOG === true) { logger.write('[ERROR] checkDrag -> err = ' + err.stack) }
|
|
}
|
|
}
|
|
}
|
|
|