118 lines
4.2 KiB
CoffeeScript
Executable File
118 lines
4.2 KiB
CoffeeScript
Executable File
Template.slide.rendered = ->
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currentSlide = getCurrentSlideDoc()
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pic = new Image()
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pic.onload = ->
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setInSession 'slideOriginalWidth', this.width
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setInSession 'slideOriginalHeight', this.height
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$(window).resize( ->
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# redraw the whiteboard to adapt to the resized window
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redrawWhiteboard()
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)
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if currentSlide?.slide?.png_uri?
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createWhiteboardPaper (wpm) ->
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displaySlide wpm
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Tracker.autorun (comp) -> # whiteboard is redrawn every time user becomes a presenter or loses that status
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if BBB.isUserPresenter(getInSession('userId')) isnt undefined
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redrawWhiteboard()
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pic.src = currentSlide?.slide?.png_uri
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@createWhiteboardPaper = (callback) =>
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@whiteboardPaperModel = new Meteor.WhiteboardPaperModel('whiteboard-paper')
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callback(@whiteboardPaperModel)
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@displaySlide = (wpm) ->
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currentSlide = getCurrentSlideDoc()
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wpm.create()
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adjustedDimensions = scaleSlide(getInSession('slideOriginalWidth'), getInSession('slideOriginalHeight'))
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wpm._displayPage(currentSlide?.slide?.png_uri, getInSession('slideOriginalWidth'), getInSession('slideOriginalHeight'))
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manuallyDisplayShapes()
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wpm.scale(adjustedDimensions.width, adjustedDimensions.height)
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@manuallyDisplayShapes = ->
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return if Meteor.WhiteboardCleanStatus.findOne({in_progress: true})?
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currentSlide = getCurrentSlideDoc()
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wpm = @whiteboardPaperModel
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shapes = Meteor.Shapes.find({whiteboardId: currentSlide?.slide?.id}).fetch()
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for s in shapes
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shapeInfo = s.shape?.shape or s?.shape
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shapeType = shapeInfo?.type
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if shapeType isnt "text"
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len = shapeInfo.points.length
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for num in [0..len] # the coordinates must be in the range 0 to 1
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shapeInfo?.points[num] = shapeInfo?.points[num] / 100
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wpm?.makeShape(shapeType, shapeInfo)
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wpm?.updateShape(shapeType, shapeInfo)
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# calculates and returns the best fitting {width, height} pair
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# based on the image's original width and height
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@scaleSlide = (originalWidth, originalHeight) ->
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# set the size of the whiteboard space (frame) where the slide will be displayed
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if window.matchMedia('(orientation: landscape)').matches
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# for landscape orientation we want "fit to height" so that we can
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# minimize the empty space above and below the slide (for best readability)
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boardWidth = $("#whiteboard-container").width()
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boardHeight = $("#whiteboard-container").height()
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else
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# for portrait orientation we want "fit to width" so that we can
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# minimize the empty space on the sides of the slide (for best readability)
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boardWidth = $("#whiteboard-container").width()
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boardHeight = 1.4 * $("#whiteboard-container").width() # A4 paper size
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# this is the best fitting pair
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adjustedWidth = null
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adjustedHeight = null
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# the slide image is in portrait orientation
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if originalWidth <= originalHeight
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adjustedWidth = boardHeight * originalWidth / originalHeight
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if boardWidth < adjustedWidth
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adjustedHeight = boardHeight * boardWidth / adjustedWidth
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adjustedWidth = boardWidth
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else
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adjustedHeight = boardHeight
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# ths slide image is in landscape orientation
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else
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adjustedHeight = boardWidth * originalHeight / originalWidth
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if boardHeight < adjustedHeight
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adjustedWidth = boardWidth * boardHeight / adjustedHeight
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adjustedHeight = boardHeight
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else
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adjustedWidth = boardWidth
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{ width: adjustedWidth, height: adjustedHeight }
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Template.slide.helpers
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updatePointerLocation: (pointer) ->
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if whiteboardPaperModel?
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wpm = whiteboardPaperModel
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wpm?.moveCursor(pointer.x, pointer.y)
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#### SHAPE ####
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Template.shape.rendered = ->
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# @data is the shape object coming from the {{#each}} in the html file
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shapeInfo = @data.shape?.shape or @data.shape
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shapeType = shapeInfo?.type
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if shapeType isnt "text"
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len = shapeInfo.points.length
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for num in [0..len] # the coordinates must be in the range 0 to 1
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shapeInfo.points[num] = shapeInfo.points[num] / 100
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if whiteboardPaperModel?
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wpm = whiteboardPaperModel
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wpm?.makeShape(shapeType, shapeInfo)
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wpm?.updateShape(shapeType, shapeInfo)
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Template.shape.destroyed = ->
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if whiteboardPaperModel?
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wpm = whiteboardPaperModel
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wpm.clearShapes()
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manuallyDisplayShapes()
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