49 lines
1.1 KiB
CoffeeScript
49 lines
1.1 KiB
CoffeeScript
define [
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'jquery',
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'underscore',
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'backbone',
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'globals'
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], ($, _, Backbone, globals) ->
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# The cursor/pointer in the whiteboard
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WhiteboardCursorModel = Backbone.Model.extend
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initialize: (@paper, radius=null, color=null) ->
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@radius = radius or 5
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@color = color or "#ff6666" # a pinkish red
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@cursor = null
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draw: () ->
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@cursor = @paper.circle(0, 0, @radius)
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@cursor.attr
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"fill": @color
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"stroke": @color
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"opacity": "0.8"
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$(@cursor.node).on "mousewheel", _.bind(@_onMouseWheel, @)
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toFront: () ->
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@cursor.toFront() if @cursor?
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setRadius: (value) ->
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if @cursor?
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@cursor.attr r: value
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setPosition: (x, y) ->
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if @cursor?
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@cursor.attr
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cx: x
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cy: y
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undrag: () ->
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@cursor.undrag() if @cursor?
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drag: (onMove, onStart, onEnd, target=null) ->
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if @cursor?
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target or= @
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@cursor.drag _.bind(onMove, target), _.bind(onStart, target), _.bind(onEnd, target)
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_onMouseWheel: (e, delta) ->
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@trigger("cursor:mousewheel", e, delta)
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WhiteboardCursorModel
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