Class: VtkTkImageViewerWidget
- Inherits:
-
TkWindow
- Object
- TkWindow
- VtkTkImageViewerWidget
- Defined in:
- lib/VTK/tk/vtkTkImageViewerWidget.rb
Constant Summary collapse
- TkCommandNames =
A vtkTkImageViewerWidget for Ruby.
Use GetImageViewer() to get the vtkImageViewer. Create with the keyword double=1 in order to generate a double-buffered viewer. Create with the keyword focus_on_enter=1 to enable focus-follows-mouse. The default is for a click-to-focus mode.
['vtkTkImageViewerWidget'.freeze].freeze
Instance Method Summary collapse
- #_GrabFocus ⇒ Object
- #BindTkImageViewer ⇒ Object
- #EndQueryInteraction ⇒ Object
- #EndWindowLevelInteraction ⇒ Object
- #EnterTkViewer ⇒ Object
- #ExposeTkImageViewer ⇒ Object
- #GetImageViewer ⇒ Object
-
#initialize(master, kw = {}) ⇒ VtkTkImageViewerWidget
constructor
A new instance of VtkTkImageViewerWidget.
- #LeaveTkViewer ⇒ Object
- #Render ⇒ Object
- #ResetTkImageViewer ⇒ Object
- #StartQueryInteraction(x, y) ⇒ Object
- #StartWindowLevelInteraction(x, y) ⇒ Object
- #UpdateQueryInteraction(x, y) ⇒ Object
- #UpdateWindowLevelInteraction(x, y) ⇒ Object
Constructor Details
#initialize(master, kw = {}) ⇒ VtkTkImageViewerWidget
Returns a new instance of VtkTkImageViewerWidget.
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# File 'lib/VTK/tk/vtkTkImageViewerWidget.rb', line 28 def initialize(master, kw={}) =begin Constructor. Keyword arguments: iv -- Use passed image viewer instead of creating a new one. double -- If True, generate a double-buffered viewer. Defaults to False. focus_on_enter -- If True, use a focus-follows-mouse mode. Defaults to False where the widget will use a click-to-focus mode. =end # load the necessary extensions into tk vtkLoadRubyTkWidgets() _symbolkey2str(kw) if kw['iv'] @ImageViewer = kw['iv'] else @ImageViewer = Vtk::ImageViewer.new end doubleBuffer = 0 if kw['double'] doubleBuffer = 1 kw.delete('double') end # check if focus should follow mouse if kw['focus_on_enter'] @FocusOnEnter = 1 else @FocusOnEnter = 0 end kw['iv'] = @ImageViewer.GetAddressAsString("vtkImageViewer") kw['widgetname'] = 'vtkTkImageViewerWidget' super(master, kw) if doubleBuffer @ImageViewer.GetRenderWindow.DoubleBufferOn end self.BindTkImageViewer end |
Instance Method Details
#_GrabFocus ⇒ Object
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# File 'lib/VTK/tk/vtkTkImageViewerWidget.rb', line 161 def _GrabFocus @OldFocus = self.focus self.focus end |
#BindTkImageViewer ⇒ Object
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# File 'lib/VTK/tk/vtkTkImageViewerWidget.rb', line 86 def BindTkImageViewer imager = @ImageViewer.GetRenderer # stuff for window level text. mapper = Vtk::TextMapper.new mapper.SetInput("none") t_prop = mapper.GetTextProperty t_prop.SetFontFamilyToTimes t_prop.SetFontSize(18) t_prop.BoldOn t_prop.ShadowOn @LevelMapper = mapper actor = Vtk::Actor2D.new actor.SetMapper(mapper) actor.SetLayerNumber(1) actor.GetPositionCoordinate.SetValue(4,22) actor.GetProperty.SetColor(1,1,0.5) actor.SetVisibility(0) imager.AddActor2D(actor) @LevelActor = actor mapper = Vtk::TextMapper.new mapper.SetInput("none") t_prop = mapper.GetTextProperty t_prop.SetFontFamilyToTimes t_prop.SetFontSize(18) t_prop.BoldOn t_prop.ShadowOn @WindowMapper = mapper actor = Vtk::Actor2D.new actor.SetMapper(mapper) actor.SetLayerNumber(1) actor.GetPositionCoordinate.SetValue(4,4) actor.GetProperty.SetColor(1,1,0.5) actor.SetVisibility(0) imager.AddActor2D(actor) @WindowActor = actor @LastX = 0 @LastY = 0 @OldFocus = 0 @InExpose = 0 # bindings # window level self.bind("ButtonPress-1"){|e,s| s||s=self; s.StartWindowLevelInteraction(e.x,e.y) } self.bind("B1-Motion"){|e,s| s||s=self; s.UpdateWindowLevelInteraction(e.x,e.y) } self.bind("ButtonRelease-1"){|e,s| s||s=self; s.EndWindowLevelInteraction } # Get the value self.bind("ButtonPress-3"){|e,s| s||s=self; s.StartQueryInteraction(e.x,e.y) } self.bind("B3-Motion"){|e,s| s||s=self; s.UpdateQueryInteraction(e.x,e.y) } self.bind("ButtonRelease-3"){|e,s| s||s=self; s.EndQueryInteraction } self.bind("Expose"){|e,s| s||s=self; s.ExposeTkImageViewer } self.bind("Enter"){|e,s| s||s=self; s.EnterTkViewer } self.bind("Leave"){|e,s| s||s=self; s.LeaveTkViewer } self.bind("KeyPress-e"){|e,s| s||s=self; exit } self.bind("KeyPress-r"){|e,s| s||s=self; s.ResetTkImageViewer } end |
#EndQueryInteraction ⇒ Object
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# File 'lib/VTK/tk/vtkTkImageViewerWidget.rb', line 277 def EndQueryInteraction @WindowActor.SetVisibility(0) self.Render end |
#EndWindowLevelInteraction ⇒ Object
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# File 'lib/VTK/tk/vtkTkImageViewerWidget.rb', line 208 def EndWindowLevelInteraction # make the window level text invisible @LevelActor.SetVisibility(0) @WindowActor.SetVisibility(0) self.Render end |
#EnterTkViewer ⇒ Object
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# File 'lib/VTK/tk/vtkTkImageViewerWidget.rb', line 166 def EnterTkViewer if @FocusOnEnter self._GrabFocus end return nil end |
#ExposeTkImageViewer ⇒ Object
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# File 'lib/VTK/tk/vtkTkImageViewerWidget.rb', line 180 def ExposeTkImageViewer if @InExpose == 0 @InExpose = 1 self.update() @ImageViewer.Render() @InExpose = 0 end return nil end |
#GetImageViewer ⇒ Object
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# File 'lib/VTK/tk/vtkTkImageViewerWidget.rb', line 78 def GetImageViewer return @ImageViewer end |
#LeaveTkViewer ⇒ Object
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# File 'lib/VTK/tk/vtkTkImageViewerWidget.rb', line 173 def LeaveTkViewer if @FocusOnEnter && @OldFocus != nil @OldFocus.focus end return nil end |
#Render ⇒ Object
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# File 'lib/VTK/tk/vtkTkImageViewerWidget.rb', line 82 def Render @ImageViewer.Render end |
#ResetTkImageViewer ⇒ Object
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# File 'lib/VTK/tk/vtkTkImageViewerWidget.rb', line 246 def ResetTkImageViewer # Reset: Set window level to show all values viewer = @ImageViewer input = viewer.GetInput if input == nil return nil end # Get the extent in viewer z = viewer.GetZSlice input.SetUpdateExtent(-99999,99999,-99999,99999,z,z) input.Update low,high = input.GetScalarRange viewer.SetColorWindow(high - low) viewer.SetColorLevel((high + low) * 0.5) self.Render end |
#StartQueryInteraction(x, y) ⇒ Object
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# File 'lib/VTK/tk/vtkTkImageViewerWidget.rb', line 268 def StartQueryInteraction(x,y) if ! @FocusOnEnter _GrabFocus() end # Query PixleValue stuff @WindowActor.SetVisibility(1) self.UpdateQueryInteraction(x,y) end |
#StartWindowLevelInteraction(x, y) ⇒ Object
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# File 'lib/VTK/tk/vtkTkImageViewerWidget.rb', line 190 def StartWindowLevelInteraction(x,y) if ! @FocusOnEnter _GrabFocus end viewer = @ImageViewer @LastX = x @LastY = y @Window = viewer.GetColorWindow.to_f @Level = viewer.GetColorLevel.to_f # make the window level text visible @LevelActor.SetVisibility(1) @WindowActor.SetVisibility(1) self.UpdateWindowLevelInteraction(x,y) return nil end |
#UpdateQueryInteraction(x, y) ⇒ Object
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# File 'lib/VTK/tk/vtkTkImageViewerWidget.rb', line 282 def UpdateQueryInteraction(x,y) viewer = @ImageViewer input = viewer.GetInput z = viewer.GetZSlice # y is flipped upside down y = self.winfo_height - y # make sure point is in the whole extent of the image. xMin,xMax,yMin,yMax,zMin,zMax = input.GetWholeExtent if (x < xMin || x > xMax || y < yMin || y > yMax || z < zMin || z > zMax) return nil end input.SetUpdateExtent(x,x,y,y,z,z) input.Update numComps = input.GetNumberOfScalarComponents text = "" for i in 0...numComps val = input.GetScalarComponentAsDouble(x,y,z,i) text = "#{text} #{"%.1f"%val}" end @WindowMapper.SetInput("(#{"%d"%x}, #{"%d"%y}): #{text}") self.Render end |
#UpdateWindowLevelInteraction(x, y) ⇒ Object
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# File 'lib/VTK/tk/vtkTkImageViewerWidget.rb', line 215 def UpdateWindowLevelInteraction(x,y) # compute normalized delta dx = 4.0*(x - @LastX)/self.winfo_width*@Window dy = 4.0*(@LastY - y)/self.winfo_height*@Level # abs so that direction does not flip if @Window < 0.0 dx = -dx end if @Level < 0.0 dy = -dy end # compute new window level window = @Window + dx if window < 0.0 level = @Level + dy else level = @Level - dy end viewer = @ImageViewer viewer.SetColorWindow(window) viewer.SetColorLevel(level) @WindowMapper.SetInput("Window: %g" % window) @LevelMapper.SetInput("Level: %g" % level) self.Render end |