$svg = null # jquery object for svg element
svg = null # dom object for svg element
$tool_options = null # jquery object for tool options line
-selection = null
+selection = []
svg_ns = 'http://www.w3.org/2000/svg'
cur_tool = null
+cur_tool_name = null
mouse = x: 0, y: 0, buttons: [0,0,0]
+class EditableThing
+ constructor: ->
+ @el = null
+ click_proximity: (x, y) ->
+ return null
+ clicked: ->
+ update: ->
+ destructor: ->
+ if @el?
+ svg.removeChild @el
+ @el = null
+
+class PolyLine extends EditableThing
+ constructor: (args) ->
+ super args
+ @drawing = args?.drawing ? false
+ @el = document.createElementNS svg_ns, "path"
+ svg.appendChild @el
+ @points = args?.points ? []
+ @update()
+ update: (args) ->
+ if args?.drawing?
+ @drawing = args.drawing
+ d = ''
+ l = ''
+ sep = 'M'
+ for loc, i in @points
+ d += l = "#{sep} #{loc[0]} #{loc[1]}"
+ sep = ' L'
+ if args?.to_mouse?
+ d += l = "#{sep} #{args.mouse_x} #{args.mouse_y}"
+ if args?.close # FIXME ?remove
+ d += l = ' z'
+ if @points.length > 0
+ if l is " L #{@points[0][0]} #{@points[0][1]}"
+ d = d.substr 0, d.length - l.length
+ d += ' z'
+ @el.setAttribute "d", d
+ add_point: (x, y) ->
+ @points.push [x, y]
+ close_loop: ->
+ if @points.length > 2
+ @add_point @points[0][0], @points[0][1]
+
class Tool
constructor: (args) ->
@button = args.button
@cancel_button.click @cancel_drawing.bind @
@update_helper_buttons()
click: (x, y) ->
- if selection? and not selection.drawing?
- selection = null
- unless selection?
- path = document.createElementNS svg_ns, "path"
- selection = data: [], element: path, drawing: true
- svg.appendChild path
- selection.data.push [x, y]
- update_path selection
+ if selection.length and not selection[0].drawing?
+ selection = []
+ unless selection.length
+ selection.push new PolyLine drawing: true
+ selection[0].add_point x, y
+ selection[0].update()
@update_helper_buttons()
update_helper_buttons: ->
- if selection?.drawing? and selection?.data.length > 0
+ if selection[0]?.drawing? and selection[0]?.points.length > 0
@cancel_button.removeClass 'disabled'
else
@cancel_button.addClass 'disabled'
- if selection?.drawing? and selection?.data.length > 1
+ if selection[0]?.drawing? and selection[0]?.points.length > 1
@stop_button.removeClass 'disabled'
else
@stop_button.addClass 'disabled'
- if selection?.drawing? and selection?.data.length > 2
+ if selection[0]?.drawing? and selection[0]?.points.length > 2
@stop_close_button.removeClass 'disabled'
else
@stop_close_button.addClass 'disabled'
cancel_drawing: ->
- if selection?.drawing?
- svg.removeChild selection.element
- selection = null
+ if selection[0]?.drawing?
+ selection[0].destructor()
+ selection = []
@update_helper_buttons()
return false
stop_drawing: ->
- if selection?.drawing?
- if selection?.data.length < 2
+ if selection[0]?.drawing?
+ if selection[0]?.points.length < 2
return @cancel_drawing()
- update_path selection
- selection = null
+ if selection[0]?
+ selection[0].update()
+ selection = []
@update_helper_buttons()
return false
stop_close_drawing: ->
- if selection?.drawing?
- if selection?.data.length < 3
+ if selection[0]?.drawing?
+ if selection[0]?.points.length < 3
return @stop_drawing()
- update_path selection, close: true
- selection = null
+ selection[0].close_loop()
+ selection[0].update drawing: false
+ selection = []
@update_helper_buttons()
return false
mousemove: (x, y) ->
mouse.x = x
mouse.y = y
- if selection?.drawing?
- update_path selection, to_mouse: true
+ if selection[0]?.drawing?
+ selection[0].update to_mouse: true, mouse_x: x, mouse_y: y
keydown: (keycode) ->
switch keycode
when ('O'.charCodeAt 0), ('0'.charCodeAt 0)
disable: ->
super()
@stop_drawing()
- if selection?.drawing?
- delete selection.drawing
class EditTool extends Tool
constructor: (args) ->
super args
- toolbar.append $ "<span>Oops, the edit tool isn't implemented yet</span>"
+ args.tool_options.append $ "<span>Oops, the edit tool isn't implemented yet</span>"
class DeleteTool extends Tool
constructor: (args) ->
super args
- toolbar.append $ "<span>Oops, the delete isn't implemented yet</span>"
+ args.tool_options.append $ "<span>To delete: click on a line below</span>"
+ click: (x, y) ->
+ $svg.find('path:hover').remove()
+ return false
update_path = (path, flags) ->
d = ''
# called automatically on domcontentloaded
init = ->
- tool_buttons =
- draw: button_text: 'draw', factory: DrawTool
- edit: button_text: 'edit', factory: EditTool
- delete: button_text: 'delete', factory: DeleteTool
$container = $ '.crayon_mockup'
$toolbar = $ '<div class="toolbar"><span>Tools:</span></div>'
- for k, t of tool_buttons
- t.element = $ "<span class=\"button\"></span>"
- t.element.text t.button_text
- $toolbar.append t.element
- do (t) ->
- t.element.click ->
- if cur_tool?
- cur_tool.disable()
- ($toolbar.find '.button').removeClass 'disabled'
- $tool_options.empty()
- cur_tool = new t.factory button: t.element, tool_options: $tool_options
$tool_options = $ '<div class="tool_options"></div>'
$container.append $toolbar
$container.append $tool_options
svg.setAttribute 'viewBox', "0 0 #{width} #{height}"
$svg = $ svg
$container.append $svg
- cur_tool = new TutorialTool tool_options: $tool_options
+
+ tool_buttons =
+ tutorial: default: true, factory: TutorialTool
+ draw: button_text: 'draw', factory: DrawTool
+ edit: button_text: 'edit', factory: EditTool
+ delete: button_text: 'delete', factory: DeleteTool
+ for k, t of tool_buttons
+ if t.button_text?
+ t.button = $ "<span class=\"button\"></span>"
+ t.button.text t.button_text
+ $toolbar.append t.button
+ do (k, t) ->
+ activate = ->
+ if cur_tool?
+ cur_tool.disable()
+ $container.removeClass "#{cur_tool_name}_tool"
+ ($toolbar.find '.button').removeClass 'disabled'
+ cur_tool_name = k
+ $container.addClass "#{cur_tool_name}_tool"
+ $tool_options.empty()
+ cur_tool = new t.factory button: t.button, tool_options: $tool_options
+ if t.button?
+ t.button.click activate
+ if t.default
+ activate()
+
$svg.mousedown (e) ->
offset = $svg.offset()
if cur_tool?
- return cur_tool.click e.pageX - offset.left, e.pageY - offset.top
+ mouse_x = Math.round(e.pageX - offset.left)
+ mouse_y = Math.round(e.pageY - offset.top)
+ return cur_tool.click mouse_x, mouse_y
$svg.mousemove (e) ->
offset = $svg.offset()
if cur_tool?
- return cur_tool.mousemove e.pageX - offset.left, e.pageY - offset.top
+ mouse_x = Math.round(e.pageX - offset.left)
+ mouse_y = Math.round(e.pageY - offset.top)
+ return cur_tool.mousemove mouse_x, mouse_y
($ document).keydown (e) ->
if cur_tool?
return cur_tool.keydown e.keyCode
Got questions, comments, patches, etc.? Contact Jason Woofenden