UseDPI Property

Imports Leadtools 
Imports Leadtools.Dicom 
Imports Leadtools.Medical3D 
Imports Leadtools.Codecs 
Imports Leadtools.MedicalViewer 
Imports Leadtools.Annotations.Engine 
Imports Leadtools.Annotations.Designers 
Imports Leadtools.ImageProcessing.Core 
 
Private Class MedicalViewerUseDPIForm : Inherits Form 
   Private _medicalViewer As MedicalViewer 
   Private _seriesManager As MedicalViewerSeriesManager 
 
   Private Sub MedicalViewer_SizeChanged(ByVal sender As Object, ByVal e As EventArgs) 
      _medicalViewer.Size = New Size(Me.ClientRectangle.Right, Me.ClientRectangle.Bottom) 
   End Sub 
 
   Public Sub New(ByVal output As MedicalViewerSeriesManager) 
      DicomEngine.Startup() 
      Dim _codecs As RasterCodecs = New RasterCodecs() 
 
      AddHandler SizeChanged, AddressOf MedicalViewer_SizeChanged 
 
      ' Create the medical viewer and adjust the size and the location. 
      _medicalViewer = New MedicalViewer(1, 2) 
      _medicalViewer.Location = New Point(0, 0) 
      _medicalViewer.Size = New Size(Me.ClientRectangle.Right, Me.ClientRectangle.Bottom) 
 
      _seriesManager = output 
 
      Dim cell As MedicalViewerMultiCell = New MedicalViewerMultiCell(Nothing, True, 1, 1) 
 
      Dim index As Integer 
      Dim count As Integer = output.Stacks(0).Items.Count 
      Dim codecsInformation As CodecsImageInfo 
 
      Dim imageInformation As MedicalViewerImageInformation() = New MedicalViewerImageInformation(count - 1) {} 
 
      index = 0 
      Do While index < count 
         codecsInformation = _codecs.GetInformation(CStr(output.Stacks(0).Items(index).Data), True) 
 
         imageInformation(index) = New MedicalViewerImageInformation() 
         imageInformation(index).ImageHeight = codecsInformation.Width 
         imageInformation(index).ImageWidth = codecsInformation.Width 
         imageInformation(index).XResolution = codecsInformation.XResolution 
         imageInformation(index).YResolution = codecsInformation.YResolution 
         index += 1 
      Loop 
 
      AddHandler cell.FramesRequested, AddressOf cell_FramesRequested 
      AddHandler FormClosing, AddressOf MedicalViewerLocalizer_FormClosing 
      cell.EnableLowMemoryUsage(2, count, imageInformation) 
      cell.FitImageToCell = False 
 
      ' add some actions that will be used to change the properties of the images inside the control. 
      cell.AddAction(MedicalViewerActionType.WindowLevel) 
      cell.AddAction(MedicalViewerActionType.Alpha) 
      cell.AddAction(MedicalViewerActionType.Offset) 
      AddHandler cell.CellMouseClick, AddressOf cell_CellMouseClick 
 
      ' assign the added actions to a mouse button, meaning that when the user clicks and drags the mouse button, the associated action will be activated. 
      cell.SetAction(MedicalViewerActionType.WindowLevel, MedicalViewerMouseButtons.Left, MedicalViewerActionFlags.Active) 
      cell.SetAction(MedicalViewerActionType.Alpha, MedicalViewerMouseButtons.Middle, MedicalViewerActionFlags.Active) 
      cell.SetAction(MedicalViewerActionType.Offset, MedicalViewerMouseButtons.Right, MedicalViewerActionFlags.Active) 
 
      cell.ReferenceLine.Enabled = True 
      cell.ReferenceLine.Color = Color.Yellow 
      cell.ShowCellBoundaries = True 
 
      _medicalViewer.Cells.Add(cell) 
      ' adjust some properties of the cell and add some tags. 
      _medicalViewer.Cells(0).SetTag(2, MedicalViewerTagAlignment.TopLeft, MedicalViewerTagType.UserData, "EX. ID 230-36-5448") 
      _medicalViewer.Cells(0).SetTag(4, MedicalViewerTagAlignment.TopLeft, MedicalViewerTagType.Frame) 
      _medicalViewer.Cells(0).SetTag(6, MedicalViewerTagAlignment.TopLeft, MedicalViewerTagType.Scale) 
      _medicalViewer.Cells(0).SetTag(2, MedicalViewerTagAlignment.BottomLeft, MedicalViewerTagType.WindowLevelData) 
      _medicalViewer.Cells(0).SetTag(1, MedicalViewerTagAlignment.BottomLeft, MedicalViewerTagType.FieldOfView) 
 
      cell.PixelSpacing = output.Stacks(0).PixelSpacing 
 
      index = 0 
      Do While index < count 
         cell.SetImagePosition(index, output.Stacks(0).Items(index).ImagePosition, (index = count - 1)) 
         index += 1 
      Loop 
      cell.ImageOrientation = output.Stacks(0).Items(0).ImageOrientationArray 
      cell.FrameOfReferenceUID = output.Stacks(0).Items(0).FrameOfReferenceUID 
 
      Controls.Add(_medicalViewer) 
      _medicalViewer.Dock = DockStyle.Fill 
      DicomEngine.Shutdown() 
   End Sub 
 
   Private Sub cell_CellMouseClick(ByVal sender As Object, ByVal e As MedicalViewerCellMouseEventArgs) 
 
      ' This is used to switch between displaying the image using the DPI of the image relative to the DPI of the screen, or displaying it noramlly. 
      CType(sender, MedicalViewerCell).UseDPI = Not (CType(sender, MedicalViewerCell)).UseDPI 
   End Sub 
 
   Private Sub MedicalViewerLocalizer_FormClosing(ByVal sender As Object, ByVal e As FormClosingEventArgs) 
   End Sub 
 
   Private Sub cell_FramesRequested(ByVal sender As Object, ByVal e As MedicalViewerRequestedFramesInformationEventArgs) 
      Dim cell As MedicalViewerMultiCell = CType(sender, MedicalViewerMultiCell) 
      Dim _codecs As RasterCodecs = New RasterCodecs() 
      Dim i As Integer 
      Dim image As RasterImage 
      Dim fileName As String 
 
      If e.RequestedFramesIndexes.Length > 0 Then 
         fileName = CStr(_seriesManager.Stacks(0).Items(e.RequestedFramesIndexes(0)).Data) 
         image = _codecs.Load(fileName) 
      Else 
         Return 
      End If 
 
      i = 1 
      Do While i < e.RequestedFramesIndexes.Length 
         fileName = CStr(_seriesManager.Stacks(0).Items(e.RequestedFramesIndexes(i)).Data) 
         image.AddPage(_codecs.Load(fileName)) 
         i += 1 
      Loop 
 
      cell.SetRequestedImage(image, e.RequestedFramesIndexes, MedicalViewerSetImageOptions.Insert) 
   End Sub 
 
   Public ReadOnly Property Viewer() As MedicalViewer 
      Get 
         Return _medicalViewer 
      End Get 
   End Property 
End Class 
 
Private Function GetMedicalViewerUseDPIForm() As MedicalViewerUseDPIForm 
   Dim form As MedicalViewerSeriesManagerFrom = New MedicalViewerSeriesManagerFrom() 
   Dim output As MedicalViewerSeriesManager = form.LoadJamesHead() 
 
   Return New MedicalViewerUseDPIForm(output) 
End Function 
 
' This example changes the default window level value by decrease the width by 100. Then resets the images based on the new value. 
<TestMethod()> _ 
Public Sub MedicalViewerUseDPIExample() 
   Dim myForm As MedicalViewerUseDPIForm = GetMedicalViewerUseDPIForm() 
   Dim medicalViewer As MedicalViewer = myForm.Viewer 
 
   myForm.ShowDialog() 
End Sub