Parasitemia/ParasitemiaUI/GUI.fs

   1 module ParasitemiaUI.GUI
   2
   3 open System
   4 open System.IO
   5 open System.Linq
   6 open System.Windows
   7 open System.Windows.Media
   8 open System.Windows.Controls
   9 open Microsoft.Win32 // For the common dialogs.
  10
  11 open Logger
  12
  13 open ParasitemiaUIControls
  14 open ParasitemiaCore.Config
  15 open ParasitemiaCore.Utils
  16 open Types
  17
  18 let run (defaultConfig : Config) (fileToOpen : string option) =
  19     let app = new Application ()
  20     let win = MainWindow ()
  21
  22     let state = State.State defaultConfig
  23     let mutable currentScale = 1.
  24     let mutable displayHealthy = false
  25     let warningBelowNumberOfRBC = 1000
  26
  27     // Initializations.
  28     let canvasCurrentImageColor = win.canvasCurrentImage.Background
  29     win.menuHightlightRBC.IsChecked <- displayHealthy
  30
  31     // Utils.
  32     let extractRBCPreview (img : Emgu.CV.Image<Emgu.CV.Structure.Bgr, byte>) (rbc : RBC) : Emgu.CV.Image<Emgu.CV.Structure.Bgr, byte> =
  33         let rbcWidth = rbc.size.Width
  34         let rbcHeight = rbc.size.Height
  35         let x = rbc.center.X - rbcWidth / 2. |> roundInt
  36         let y = rbc.center.Y - rbcHeight / 2. |> roundInt
  37         let w = roundInt rbcWidth
  38         let h = roundInt rbcHeight
  39         img.GetSubRect (
  40             System.Drawing.Rectangle (
  41                 System.Drawing.Point ((if x < 0 then 0 else x), (if y < 0 then 0 else y)),
  42                 System.Drawing.Size ((if x + w >= img.Width then img.Width - x else w), (if y + h >= img.Height then img.Height - y else h))
  43             )
  44         )
  45
  46     let setRBCFrameStyle (srcImg : SourceImage) (rbc : RBC) (frame : RBCFrame) =
  47         frame.Opacity <- if displayHealthy || rbc.setManually || rbc.infected then 1. else 0.
  48         let color = if rbc.infected then srcImg.InfectedRBCColor else srcImg.HealthyRBCColor
  49         frame.manuallyAdded.Visibility <- if rbc.setManually then Visibility.Visible else Visibility.Hidden
  50         frame.manuallyAdded.Fill <- color
  51         frame.border.Stroke <- color
  52
  53     let frameStrokeThickness () =
  54         state.CurrentImage |> Option.map (fun img -> max 1. (img.AverageRBCSize / 100.)) |> Option.defaultValue 1.
  55
  56     let frameFontSize () =
  57         state.CurrentImage |> Option.map (fun img -> max 1. (img.AverageRBCSize / 6.)) |> Option.defaultValue 1.
  58
  59     let createRBCFrameFromExisting (srcImg : SourceImage) (rbc : RBC) (frame : RBCFrame) (frameThickness : float) (fontSize : float) (isTextBelow : bool) : RBCFrame =
  60         frame.Visibility <- Visibility.Visible
  61         frame.Width <- rbc.size.Width
  62         frame.Height <- rbc.size.Height
  63         frame.Tag <- rbc
  64         frame.IsTextBelow <- isTextBelow
  65         setRBCFrameStyle srcImg rbc frame
  66         frame.border.StrokeThickness <- frameThickness
  67         frame.txtRBCNumber.Text <- string rbc.num
  68         frame.txtRBCNumber.FontSize <- fontSize
  69         frame
  70
  71     let updateDocumentStatus () =
  72         win.txtDocumentStatus.Text <- if state.FilePath = "" then "<New document>" else state.FilePath
  73
  74     let statusMessageTimer = Threading.DispatcherTimer ()
  75     statusMessageTimer.Tick.AddHandler (fun obj args -> statusMessageTimer.Stop (); win.txtMessageStatus.Text <- "")
  76     statusMessageTimer.Interval <- TimeSpan (0, 0, 2)
  77
  78     // To show a use message while a short period of time.
  79     let displayStatusMessage (message : string) =
  80         win.txtMessageStatus.Text <- message
  81         statusMessageTimer.Stop ()
  82         statusMessageTimer.Start ()
  83
  84     let highlightRBC (rbc : RBC) (highlight : bool) =
  85         let highlightRBCFrame (rbcFrame : RBCFrame) (strokeThickness : float) =
  86             if highlight then
  87                 rbcFrame.border.StrokeThickness <- 2. * strokeThickness
  88                 if not rbc.infected && not rbc.setManually && not displayHealthy then rbcFrame.Opacity <- 1.
  89             else
  90                 rbcFrame.border.StrokeThickness <- strokeThickness
  91                 if not rbc.infected && not rbc.setManually && not displayHealthy then rbcFrame.Opacity <- 0.
  92
  93         for rbcFrame in win.stackRBC.Children |> Seq.cast<RBCFrame> do
  94             if (rbcFrame.Tag :?> RBC) = rbc then
  95                 highlightRBCFrame rbcFrame 1.
  96
  97         let strokeThicknessCanvas = frameStrokeThickness ()
  98
  99         for rbcFrame in win.canvasCurrentImage.Children |> Seq.cast<RBCFrame> do
 100             if (rbcFrame.Tag :?> RBC) = rbc then
 101                 highlightRBCFrame rbcFrame strokeThicknessCanvas
 102
 103     let zoomToRBC (rbc : RBC) =
 104         win.scrollViewCurrentImage.ScrollToHorizontalOffset (rbc.center.X * currentScale - win.scrollViewCurrentImage.ViewportWidth / 2. + win.borderCurrentImage.BorderThickness.Left)
 105         win.scrollViewCurrentImage.ScrollToVerticalOffset (rbc.center.Y * currentScale - win.scrollViewCurrentImage.ViewportHeight / 2. + win.borderCurrentImage.BorderThickness.Top)
 106
 107     let txtImageName_TextChanged =
 108         TextChangedEventHandler (fun obj args -> state.CurrentImage |> Option.iter (fun srcImg -> state.SetName srcImg win.txtImageName.Text))
 109
 110     let updateCurrentImageInformation () =
 111         win.txtImageName.TextChanged.RemoveHandler (txtImageName_TextChanged)
 112         win.txtImageInformation1.Inlines.Clear ()
 113         win.txtImageInformation2.Inlines.Clear ()
 114         win.txtImageName.Text <- ""
 115
 116         match state.CurrentImage with
 117         | Some srcImg ->
 118             win.gridImageInformation.Visibility <- Visibility.Visible
 119             win.txtImageName.Text <- srcImg.Name
 120             win.txtImageName.TextChanged.AddHandler txtImageName_TextChanged
 121
 122             // The left part.
 123             let parasitemiaStr = Utils.percentText srcImg.ImageParasitemia
 124             win.txtImageInformation1.Inlines.Add (Documents.Run ("Parasitemia: ", FontWeight = FontWeights.Bold))
 125             win.txtImageInformation1.Inlines.Add parasitemiaStr
 126             win.txtImageInformation1.Inlines.Add (Documents.LineBreak ())
 127
 128             win.txtImageInformation1.Inlines.Add (Documents.Run ("Last analysis: ", FontWeight = FontWeights.Bold))
 129             win.txtImageInformation1.Inlines.Add (Documents.Run (if srcImg.DateLastAnalysis.Ticks = 0L then "<Never>" else string (srcImg.DateLastAnalysis.ToLocalTime())))
 130
 131             // The right part part.
 132             win.txtImageInformation2.Inlines.Add (Documents.Run ("Added infected erythrocyte: ", FontWeight = FontWeights.Bold))
 133             win.txtImageInformation2.Inlines.Add (Documents.Run ((srcImg.ImageNbManuallyChangedRBCStr true) + " " + (srcImg.ImageManuallyChangedRBCStr true)))
 134             win.txtImageInformation2.Inlines.Add (Documents.LineBreak ())
 135             win.txtImageInformation2.Inlines.Add (Documents.Run ("Removed infected erythrocyte: ", FontWeight = FontWeights.Bold))
 136             win.txtImageInformation2.Inlines.Add (Documents.Run ((srcImg.ImageNbManuallyChangedRBCStr false) + " " + (srcImg.ImageManuallyChangedRBCStr false)))
 137
 138         | _ ->
 139             win.gridImageInformation.Visibility <- Visibility.Hidden
 140
 141     let updateGlobalParasitemia () =
 142         win.txtGlobalParasitemia.Inlines.Clear ()
 143         let total, infected = state.GlobalParasitemia
 144         win.txtGlobalParasitemia.Inlines.Add (Documents.Run (Utils.percentText (total, infected), FontWeight = FontWeights.Bold))
 145         if total > 0 && total < warningBelowNumberOfRBC then
 146             win.txtGlobalParasitemia.Inlines.Add (
 147                 Documents.Run (
 148                     sprintf " Warning: the number of erythrocytes should be above %d" warningBelowNumberOfRBC,
 149                     FontWeight = FontWeights.Bold,
 150                     Foreground = Brushes.Red
 151                 )
 152             )
 153
 154     let updateViewportPreview () =
 155         for preview in win.stackPreviews.Children |> Seq.cast<ImageSourcePreview> do
 156             let srcImg = preview.Tag :?> SourceImage
 157             if Some srcImg = state.CurrentImage then
 158                 preview.viewport.Visibility <- Visibility.Visible
 159
 160                 let canvasWidth = win.canvasCurrentImage.ActualWidth * currentScale
 161                 let canvasHeight = win.canvasCurrentImage.ActualHeight * currentScale
 162                 let previewWidth = (preview.ActualWidth - preview.BorderThickness.Left - preview.BorderThickness.Right)
 163                 let previewHeight = (preview.ActualHeight - preview.BorderThickness.Top - preview.BorderThickness.Bottom)
 164
 165                 let marginLeft = previewWidth * (win.scrollViewCurrentImage.HorizontalOffset - win.borderCurrentImage.BorderThickness.Left) / canvasWidth - 2.
 166                 let marginRight = previewWidth * (canvasWidth - (win.scrollViewCurrentImage.HorizontalOffset - win.borderCurrentImage.BorderThickness.Right) - win.scrollViewCurrentImage.ViewportWidth) / canvasWidth - 2.
 167                 let marginTop = previewHeight * (win.scrollViewCurrentImage.VerticalOffset - win.borderCurrentImage.BorderThickness.Top) / canvasHeight - 2.
 168                 let marginBottom = previewHeight * (canvasHeight - (win.scrollViewCurrentImage.VerticalOffset - win.borderCurrentImage.BorderThickness.Bottom) - win.scrollViewCurrentImage.ViewportHeight) / canvasHeight - 2.
 169
 170                 preview.viewport.Margin <-
 171                     Thickness (
 172                         marginLeft,
 173                         marginTop,
 174                         marginRight,
 175                         marginBottom
 176                     )
 177             else
 178                 preview.viewport.Visibility <- Visibility.Hidden
 179
 180     let rec setAsInfected (srcImg : SourceImage) (rbc : RBC) (infected : bool) =
 181         state.SetAsInfected rbc infected
 182         win.canvasCurrentImage.Children
 183         |> Seq.cast<RBCFrame>
 184         |> Seq.iter (
 185             fun frame ->
 186                 if (frame.Tag :?> RBC) = rbc then
 187                     setRBCFrameStyle srcImg rbc frame
 188         )
 189         updateRBCFramesPreview ()
 190         updateCurrentImageInformation ()
 191         updateGlobalParasitemia ()
 192
 193     and createRBCFrame (srcImg : SourceImage) (rbc : RBC) (frameThickness : float) (fontSize : float) (isTextBelow : bool) : RBCFrame =
 194         let frame = createRBCFrameFromExisting srcImg rbc (RBCFrame ()) frameThickness fontSize isTextBelow
 195         frame.SetValue (Panel.ZIndexProperty, Int32.MaxValue - rbc.num) // To be sure the
 196         frame.menuRBCSetAsHealthy.Click.AddHandler (fun obj args -> setAsInfected srcImg (frame.Tag :?> RBC) false)
 197         frame.menuRBCSetAsInfected.Click.AddHandler (fun obj args -> setAsInfected srcImg (frame.Tag :?> RBC) true)
 198         frame.ContextMenuOpening.AddHandler (
 199             fun obj args ->
 200                 if (frame.Tag :?> RBC).infected then
 201                     frame.menuRBCSetAsHealthy.Visibility <- Visibility.Visible
 202                     frame.menuRBCSetAsInfected.Visibility <- Visibility.Collapsed
 203                 else
 204                     frame.menuRBCSetAsHealthy.Visibility <- Visibility.Collapsed
 205                     frame.menuRBCSetAsInfected.Visibility <- Visibility.Visible
 206         )
 207         frame.ContextMenuClosing.AddHandler (fun obj args -> if not frame.IsMouseOver then highlightRBC (frame.Tag :?> RBC) false )
 208         frame.MouseEnter.AddHandler (fun obj args -> highlightRBC (frame.Tag :?> RBC) true)
 209         frame.MouseLeave.AddHandler (fun obj args -> if not frame.grid.ContextMenu.IsOpen then highlightRBC (frame.Tag :?> RBC) false)
 210         frame
 211
 212     and updateRBCFramesPreview () =
 213         match state.CurrentImage with
 214         | Some srcImg ->
 215             let mutable currentPreview = 0
 216             for rbc in srcImg.RBCs |> List.filter (fun rbc -> displayHealthy || rbc.infected) do
 217                 let previewInfected =
 218                     if currentPreview < win.stackRBC.Children.Count then
 219                         createRBCFrameFromExisting srcImg rbc (win.stackRBC.Children.[currentPreview] :?> RBCFrame) 1. 12. false
 220                     else
 221                         let f = createRBCFrame srcImg rbc 1. 12. false
 222                         f.MouseLeftButtonUp.AddHandler (fun obj args -> zoomToRBC (f.Tag :?> RBC))
 223                         win.stackRBC.Children.Add f |> ignore
 224                         f
 225
 226                 currentPreview <- currentPreview + 1
 227
 228                 previewInfected.Height <- win.stackRBC.ActualHeight
 229                 previewInfected.Width <- win.stackRBC.ActualHeight * rbc.size.Width / rbc.size.Height
 230                 previewInfected.border.Fill <- ImageBrush (BitmapSourceConvert.ToBitmapSource (extractRBCPreview srcImg.Img rbc))
 231
 232             win.stackRBC.Children.RemoveRange (currentPreview, win.stackRBC.Children.Count - currentPreview)
 233         | _ -> ()
 234
 235         updateViewportPreview ()
 236
 237     let updateRBCFramesCurrent () =
 238         match state.CurrentImage with
 239         | Some srcImg ->
 240             let mutable currentCanvas = 0
 241             let strokeThickness = frameStrokeThickness ()
 242             let fontSize = frameFontSize ()
 243             for rbc in srcImg.RBCs do
 244                 let frame =
 245                     if currentCanvas < win.canvasCurrentImage.Children.Count then
 246                         createRBCFrameFromExisting srcImg rbc (win.canvasCurrentImage.Children.[currentCanvas] :?> RBCFrame) strokeThickness fontSize true
 247                     else
 248                         let f = createRBCFrame srcImg rbc strokeThickness fontSize true
 249                         win.canvasCurrentImage.Children.Add f |> ignore
 250                         f
 251
 252                 currentCanvas <- currentCanvas + 1
 253
 254                 Canvas.SetLeft (frame, rbc.center.X - rbc.size.Width / 2.)
 255                 Canvas.SetTop (frame, rbc.center.Y - rbc.size.Height / 2.)
 256
 257             for i in currentCanvas .. win.canvasCurrentImage.Children.Count - 1 do
 258                 win.canvasCurrentImage.Children.[i].Visibility <- Visibility.Hidden
 259         | _ -> ()
 260
 261     let askDocumentPathToSave () : string option =
 262         let dialog = SaveFileDialog (AddExtension = true, DefaultExt = PiaZ.extension, Filter = PiaZ.filter)
 263
 264         if state.FilePath <> "" then
 265             dialog.FileName <- FileInfo(state.FilePath).Name
 266         elif state.PatientID <> "" then
 267             dialog.FileName <- state.PatientID + PiaZ.extension
 268
 269         let res = dialog.ShowDialog ()
 270         if res.HasValue && res.Value then
 271             Some dialog.FileName
 272         else
 273             None
 274
 275     let saveCurrentDocument () =
 276         try
 277             if state.FilePath = "" then
 278                 match askDocumentPathToSave () with
 279                 | Some filepath ->
 280                     state.FilePath <- filepath
 281                     state.Save ()
 282                 | _ -> ()
 283             else
 284                 state.Save ()
 285             updateDocumentStatus ()
 286             displayStatusMessage "Document saved"
 287         with
 288         | :? IOException as ex ->
 289             Log.Error "%O" ex
 290             MessageBox.Show (sprintf "The document cannot be save in \"%s\"" state.FilePath, "Error saving the document", MessageBoxButton.OK, MessageBoxImage.Error) |> ignore
 291
 292     let saveCurrentDocumentAsNewFile () =
 293         match askDocumentPathToSave () with
 294         | Some filepath ->
 295             state.FilePath <- filepath
 296             saveCurrentDocument ()
 297         | _ -> ()
 298
 299     // Ask the use to save the current document if neccessary.
 300     let askSaveCurrent () =
 301         if state.AlteredSinceLastSave then
 302             match MessageBox.Show ("Would you like to save the current document?", "Saving the current document", MessageBoxButton.YesNo, MessageBoxImage.Question) with
 303             | MessageBoxResult.Yes -> saveCurrentDocument ()
 304             | _ -> ()
 305
 306     let updateCurrentImage () =
 307         match state.CurrentImage with
 308         | Some srcImg ->
 309             win.imgLogos.Visibility <- Visibility.Collapsed
 310
 311             // Highlight the preview.
 312             win.stackPreviews.Children
 313             |> Seq.cast<ImageSourcePreview>
 314             |> Seq.iter (fun preview -> preview.border.BorderThickness <- Thickness (if preview.Tag = (srcImg :> Object) then 3. else 0.))
 315
 316             win.canvasCurrentImage.Height <- float srcImg.Img.Height
 317             win.canvasCurrentImage.Width <- float srcImg.Img.Width
 318             win.canvasCurrentImage.Background <- ImageBrush (BitmapSourceConvert.ToBitmapSource (srcImg.Img))
 319
 320             updateRBCFramesCurrent ()
 321             updateRBCFramesPreview ()
 322
 323         | None ->
 324             win.imgLogos.Visibility <- Visibility.Visible
 325
 326             win.stackRBC.Children.Clear ()
 327             win.canvasCurrentImage.Children.Clear ()
 328             win.canvasCurrentImage.Background <- canvasCurrentImageColor
 329
 330         updateCurrentImageInformation ()
 331
 332     let setCurrentImage (srcImg : SourceImage) =
 333         if state.CurrentImage.IsNone || state.CurrentImage.Value <> srcImg then
 334             state.CurrentImage <- Some srcImg
 335             updateCurrentImage ()
 336
 337     let addPreview (srcImg : SourceImage) =
 338         let imgCtrl = ImageSourcePreview (Margin = Thickness 3.)
 339
 340         imgCtrl.menuRemoveImage.Click.AddHandler (
 341             fun obj args ->
 342                 win.stackPreviews.Children.Remove (imgCtrl)
 343                 let srcImg = imgCtrl.Tag :?> SourceImage
 344                 let currentRemoved = Some srcImg = state.CurrentImage
 345                 state.RemoveSourceImage srcImg
 346                 if currentRemoved then
 347                     updateCurrentImage ()
 348
 349                 updateGlobalParasitemia ()
 350
 351                 // Update image numbers.
 352                 win.stackPreviews.Children |> Seq.cast<ImageSourcePreview> |> Seq.iter (fun imgPreview -> imgPreview.txtImageNumber.Text <- (imgPreview.Tag :?> SourceImage).RomanNum)
 353         )
 354
 355         imgCtrl.Tag <- srcImg
 356         imgCtrl.txtImageNumber.Text <- string srcImg.RomanNum
 357         let width = 200
 358         let height = srcImg.Img.Height * width / srcImg.Img.Width
 359         imgCtrl.imagePreview.Source <- BitmapSourceConvert.ToBitmapSource (srcImg.Img.Resize (width, height, Emgu.CV.CvEnum.Inter.Cubic))
 360         win.stackPreviews.Children.Add imgCtrl |> ignore
 361
 362         // Zoom to a mouse position into the control 'imgCtrl'.
 363         let zoomTo (mousePos : Point) =
 364             let canvasW = win.canvasCurrentImage.ActualWidth * currentScale
 365             let canvasH = win.canvasCurrentImage.ActualHeight * currentScale
 366             let centerX = (mousePos.X - imgCtrl.BorderThickness.Left) / (imgCtrl.ActualWidth - imgCtrl.BorderThickness.Left) * canvasW
 367             let centerY = (mousePos.Y - imgCtrl.BorderThickness.Top) / (imgCtrl.ActualHeight - imgCtrl.BorderThickness.Top) * canvasH
 368             win.scrollViewCurrentImage.ScrollToHorizontalOffset (centerX - win.scrollViewCurrentImage.ViewportWidth / 2. + win.borderCurrentImage.BorderThickness.Left)
 369             win.scrollViewCurrentImage.ScrollToVerticalOffset (centerY - win.scrollViewCurrentImage.ViewportHeight / 2. + win.borderCurrentImage.BorderThickness.Top)
 370
 371         imgCtrl.MouseLeftButtonDown.AddHandler (
 372             fun obj args ->
 373                 setCurrentImage (state.SourceImages |> Seq.find (fun srcImg -> (srcImg :> Object) = imgCtrl.Tag))
 374                 imgCtrl.UpdateLayout ()
 375                 zoomTo (args.GetPosition (imgCtrl))
 376                 imgCtrl.CaptureMouse () |> ignore
 377         )
 378
 379         imgCtrl.MouseMove.AddHandler (
 380             fun obj args ->
 381                 if imgCtrl.IsMouseCaptured then
 382                     zoomTo (args.GetPosition imgCtrl)
 383         )
 384
 385         imgCtrl.MouseLeftButtonUp.AddHandler (
 386             fun obj args ->
 387                 if imgCtrl.IsMouseCaptured then
 388                     imgCtrl.ReleaseMouseCapture ()
 389         )
 390
 391     let updatePreviews () =
 392         win.stackPreviews.Children.Clear ()
 393         for srcImg in state.SourceImages do
 394             addPreview srcImg
 395         updateCurrentImage ()
 396
 397     let updateGUI () =
 398         win.txtPatient.Text <- state.PatientID
 399         updatePreviews ()
 400         updateGlobalParasitemia ()
 401         updateDocumentStatus ()
 402
 403     let loadFile (filepath : string) =
 404         askSaveCurrent ()
 405         let previousFilePath = state.FilePath
 406         try
 407             state.FilePath <- filepath
 408             state.Load ()
 409             updateGUI ()
 410         with
 411         | :? IOException as ex ->
 412             Log.Error "%O" ex
 413             state.FilePath <- previousFilePath
 414             MessageBox.Show (sprintf "The document cannot be loaded from \"%s\"" filepath, "Error loading the document", MessageBoxButton.OK, MessageBoxImage.Error) |> ignore
 415
 416     let askLoadFile () =
 417         let dialog = OpenFileDialog (Filter = PiaZ.filter)
 418         let res = dialog.ShowDialog ()
 419         if res.HasValue && res.Value then
 420             loadFile dialog.FileName
 421
 422     let newFile () =
 423         askSaveCurrent ()
 424         state.Reset ()
 425         updateGUI ()
 426
 427     let exportResults () =
 428         let extension = ".txt"
 429         let dialog = SaveFileDialog (AddExtension = true, DefaultExt = extension)
 430
 431         if state.FilePath <> "" then
 432             dialog.FileName <- Path.GetFileNameWithoutExtension state.FilePath + extension
 433         elif state.PatientID <> "" then
 434             dialog.FileName <- state.PatientID + extension
 435
 436         let res = dialog.ShowDialog ()
 437         if res.HasValue && res.Value then
 438             try
 439                 Export.exportResults state dialog.FileName
 440             with
 441             | :? IOException as ex ->
 442                 Log.Error "%O" ex
 443                 MessageBox.Show (sprintf "The results cannot be exported in \"%s\"" state.FilePath, "Error exporting the files", MessageBoxButton.OK, MessageBoxImage.Error) |> ignore
 444
 445     let importImage () =
 446         let dialog = OpenFileDialog (Filter = "Image Files|*.png;*.jpg;*.tif;*.tiff", Multiselect = true)
 447         let res = dialog.ShowDialog ()
 448         if res.HasValue && res.Value then
 449             let noSourceImage = state.SourceImages.Count () = 0
 450
 451             for filename in dialog.FileNames do
 452                 try
 453                     let srcImg = state.AddSourceImage filename defaultConfig
 454                     addPreview srcImg
 455                 with
 456                 | _ as ex ->
 457                     Log.Error "%O" ex
 458                     MessageBox.Show (sprintf "Unable to read the image from \"%s\"" filename, "Error adding an image", MessageBoxButton.OK, MessageBoxImage.Error) |> ignore
 459
 460             updateGlobalParasitemia ()
 461
 462             if noSourceImage then
 463                 updateCurrentImage ()
 464
 465     let showAnalysisWindow () =
 466         if Analysis.showWindow win state then
 467             updateGlobalParasitemia ()
 468             updateCurrentImage ()
 469
 470     let setHighlightRBC (highlight : bool) =
 471         displayHealthy <- highlight
 472         updateRBCFramesPreview ()
 473         updateRBCFramesCurrent ()
 474
 475     win.txtPatient.TextChanged.AddHandler (fun obj args -> state.PatientID <- win.txtPatient.Text)
 476
 477     win.menuExit.Click.AddHandler (fun obj args -> win.Close ())
 478     win.menuSave.Click.AddHandler (fun obj args -> saveCurrentDocument ())
 479     win.menuSaveAs.Click.AddHandler (fun obj args -> saveCurrentDocumentAsNewFile ())
 480     win.menuOpen.Click.AddHandler (fun obj args -> askLoadFile ())
 481     win.menuNew.Click.AddHandler (fun obj args -> newFile ())
 482     win.menuExportResults.Click.AddHandler (fun obj args -> exportResults ())
 483
 484     win.menuAddSourceImage.Click.AddHandler (fun obj args -> importImage ())
 485
 486     win.menuAnalysis.SubmenuOpened.AddHandler (fun obj args -> win.menuStartAnalysis.IsEnabled <- state.SourceImages.Count () > 0)
 487
 488     win.menuStartAnalysis.Click.AddHandler (fun obj args -> showAnalysisWindow ())
 489
 490     win.menuHightlightRBC.Click.AddHandler (fun obj args -> setHighlightRBC win.menuHightlightRBC.IsChecked)
 491
 492     win.menuAbout.Click.AddHandler (fun obj args -> About.showWindow win)
 493
 494     win.menuCommandLineArguments.Click.AddHandler (fun obj args -> CommandLineArguments.showWindow win)
 495
 496     win.Closing.AddHandler (fun obj args -> askSaveCurrent ())
 497
 498     // Zoom on the current image.
 499     let adjustCurrentImageBorders (deltaX : float) (deltaY : float) =
 500         win.borderCurrentImage.BorderThickness <-
 501             Thickness (
 502                 (win.scrollViewCurrentImage.ViewportWidth + deltaX) / 2.,
 503                 (win.scrollViewCurrentImage.ViewportHeight + deltaY) / 2.,
 504                 (win.scrollViewCurrentImage.ViewportWidth + deltaX) / 2.,
 505                 (win.scrollViewCurrentImage.ViewportHeight + deltaY) / 2.
 506             )
 507
 508     win.canvasCurrentImage.SizeChanged.AddHandler (
 509         fun obj args ->
 510             let deltaX = args.NewSize.Width - args.PreviousSize.Width
 511             let deltaY = args.NewSize.Height - args.PreviousSize.Height
 512             if deltaX > 0.5 || deltaY > 0.5 then
 513                 adjustCurrentImageBorders 0.0 0.0
 514                 // Center the view at the center of the image initialy.
 515                 win.scrollViewCurrentImage.UpdateLayout ()
 516                 win.scrollViewCurrentImage.ScrollToHorizontalOffset (win.borderCurrentImage.ActualWidth / 2. - win.scrollViewCurrentImage.ViewportWidth / 2.)
 517                 win.scrollViewCurrentImage.ScrollToVerticalOffset (win.borderCurrentImage.ActualHeight / 2. - win.scrollViewCurrentImage.ViewportHeight / 2.)
 518     )
 519
 520     win.scrollViewCurrentImage.SizeChanged.AddHandler (
 521         fun obj args ->
 522             let deltaX = args.NewSize.Width - args.PreviousSize.Width
 523             let deltaY = args.NewSize.Height - args.PreviousSize.Height
 524             adjustCurrentImageBorders deltaX deltaY
 525             win.scrollViewCurrentImage.ScrollToHorizontalOffset (win.scrollViewCurrentImage.HorizontalOffset + deltaX / 8.)
 526             win.scrollViewCurrentImage.ScrollToVerticalOffset (win.scrollViewCurrentImage.VerticalOffset + deltaY / 8.)
 527     )
 528
 529     let mutable maxScale = 4.
 530     let mutable minScale = 0.25
 531     let currentImageScaleTransform = ScaleTransform ()
 532     win.canvasCurrentImage.LayoutTransform <- currentImageScaleTransform
 533     win.borderCurrentImage.PreviewMouseWheel.AddHandler (
 534         fun _obj args ->
 535             let scaleFactor = if args.Delta > 0 then 2.0 else 0.5
 536             if scaleFactor > 1. && currentScale < maxScale || scaleFactor < 1. && currentScale > minScale then
 537                 let previousScale = currentScale
 538                 currentScale <-
 539                     let newScale = currentScale * scaleFactor
 540                     if newScale > maxScale then maxScale elif newScale < minScale then minScale else newScale
 541                 let realScaleFactor = currentScale / previousScale
 542
 543                 let centerX = win.scrollViewCurrentImage.HorizontalOffset + win.scrollViewCurrentImage.ViewportWidth / 2. - win.borderCurrentImage.BorderThickness.Left
 544                 let centerY = win.scrollViewCurrentImage.VerticalOffset + win.scrollViewCurrentImage.ViewportHeight / 2. - win.borderCurrentImage.BorderThickness.Top
 545
 546                 currentImageScaleTransform.ScaleX <- currentScale
 547                 currentImageScaleTransform.ScaleY <- currentScale
 548
 549                 win.scrollViewCurrentImage.ScrollToHorizontalOffset (centerX * realScaleFactor - win.scrollViewCurrentImage.ViewportWidth / 2. + win.borderCurrentImage.BorderThickness.Left)
 550                 win.scrollViewCurrentImage.ScrollToVerticalOffset (centerY * realScaleFactor - win.scrollViewCurrentImage.ViewportHeight / 2. + win.borderCurrentImage.BorderThickness.Top)
 551
 552             args.Handled <- true
 553     )
 554
 555     // Pan on the current image.
 556     let mutable scrollStartPosition = Point (0., 0.)
 557     let mutable scrollStartOffsetX = 0.
 558     let mutable scrollStartOffsetY = 0.
 559     win.borderCurrentImage.PreviewMouseLeftButtonDown.AddHandler (
 560         fun _obj args ->
 561             scrollStartPosition <- args.GetPosition win.scrollViewCurrentImage
 562             scrollStartOffsetX <- win.scrollViewCurrentImage.HorizontalOffset
 563             scrollStartOffsetY <- win.scrollViewCurrentImage.VerticalOffset
 564             win.borderCurrentImage.Cursor <- Input.Cursors.ScrollAll
 565             win.borderCurrentImage.CaptureMouse () |> ignore
 566             args.Handled <- true
 567     )
 568
 569     win.borderCurrentImage.PreviewMouseMove.AddHandler (
 570         fun _obj args ->
 571             if win.borderCurrentImage.IsMouseCaptured then
 572                 let position = args.GetPosition win.scrollViewCurrentImage
 573                 let deltaX = scrollStartPosition.X - position.X
 574                 let deltaY = scrollStartPosition.Y - position.Y
 575                 win.scrollViewCurrentImage.ScrollToHorizontalOffset (deltaX + scrollStartOffsetX)
 576                 win.scrollViewCurrentImage.ScrollToVerticalOffset (deltaY + scrollStartOffsetY)
 577
 578                 args.Handled <- true
 579     )
 580
 581     win.borderCurrentImage.PreviewMouseLeftButtonUp.AddHandler (
 582         fun _obj args ->
 583             if win.borderCurrentImage.IsMouseCaptured then
 584                 win.borderCurrentImage.Cursor <- Input.Cursors.Arrow
 585                 win.borderCurrentImage.ReleaseMouseCapture ()
 586                 args.Handled <- true
 587     )
 588
 589     // Shortcuts.
 590     // Save.
 591     win.InputBindings.Add (
 592         Input.KeyBinding (
 593             ViewModule.FunCommand ((fun obj -> saveCurrentDocument ()), (fun obj -> true)),
 594             Input.KeyGesture (Input.Key.S, Input.ModifierKeys.Control)
 595         )
 596     ) |> ignore
 597
 598     // Save as.
 599     win.InputBindings.Add (
 600         Input.KeyBinding (
 601             ViewModule.FunCommand ((fun obj -> saveCurrentDocumentAsNewFile ()), (fun obj -> true)),
 602             Input.KeyGesture (Input.Key.S, Input.ModifierKeys.Control ||| Input.ModifierKeys.Shift)
 603         )
 604     ) |> ignore
 605
 606     // Open.
 607     win.InputBindings.Add (
 608         Input.KeyBinding (
 609             ViewModule.FunCommand ((fun obj -> askLoadFile ()), (fun obj -> true)),
 610             Input.KeyGesture (Input.Key.O, Input.ModifierKeys.Control)
 611         )
 612     ) |> ignore
 613
 614     // New file.
 615     win.InputBindings.Add (
 616         Input.KeyBinding (
 617             ViewModule.FunCommand ((fun obj -> newFile ()), (fun obj -> true)),
 618             Input.KeyGesture (Input.Key.N, Input.ModifierKeys.Control)
 619         )
 620     ) |> ignore
 621
 622     // Export results.
 623     win.InputBindings.Add (
 624         Input.KeyBinding (
 625             ViewModule.FunCommand ((fun obj -> exportResults ()), (fun obj -> true)),
 626             Input.KeyGesture (Input.Key.E, Input.ModifierKeys.Control)
 627         )
 628     ) |> ignore
 629
 630     // Import an image.
 631     win.InputBindings.Add (
 632         Input.KeyBinding (
 633             ViewModule.FunCommand ((fun obj -> importImage ()), (fun obj -> true)),
 634             Input.KeyGesture (Input.Key.A, Input.ModifierKeys.Control)
 635         )
 636     ) |> ignore
 637
 638     // Show analysis dialog.
 639     win.InputBindings.Add (
 640         Input.KeyBinding (
 641             ViewModule.FunCommand ((fun obj -> showAnalysisWindow ()), (fun obj -> state.SourceImages.Count () > 0)),
 642             Input.KeyGesture (Input.Key.Y, Input.ModifierKeys.Control)
 643         )
 644     ) |> ignore
 645
 646     // Toggle RBC highlight.
 647     win.InputBindings.Add (
 648         Input.KeyBinding (
 649             ViewModule.FunCommand (
 650                 (
 651                     fun obj ->
 652                         win.menuHightlightRBC.IsChecked <- not win.menuHightlightRBC.IsChecked
 653                         setHighlightRBC win.menuHightlightRBC.IsChecked
 654                 ),
 655                 (fun obj -> true)
 656             ),
 657             Input.KeyGesture (Input.Key.H, Input.ModifierKeys.Control)
 658         )
 659     ) |> ignore
 660
 661     // Viewport preview.
 662     win.scrollViewCurrentImage.ScrollChanged.AddHandler (fun obj args -> updateViewportPreview ())
 663
 664     updateDocumentStatus ()
 665     win.gridImageInformation.Visibility <- Visibility.Hidden
 666
 667     win.Show ()
 668
 669     match fileToOpen with
 670     | Some filepath -> loadFile filepath
 671     | None -> ()
 672
 673     app.Run ()