77281d3aaaf3e697f78aa7b912a5bcdd7da7ad65
1
module ParasitemiaUI.GUI
7 open System.Windows.Media
8 open System.Windows.Markup
9 open System.Windows.Shapes
10 open System.Windows.Controls
11 open System.Diagnostics
12 open Microsoft.Win32 // For the common dialogs.
18 open ParasitemiaCore.Config
19 open ParasitemiaCore.Utils
22 let run (defaultConfig
: Config) (fileToOpen
: string option) =
23 let app = new Application()
24 let win = Views.MainWindow()
26 let state = State.State(defaultConfig
)
27 let mutable currentScale = 1.
28 let mutable displayHealthy = false
29 let warningBelowNumberOfRBC = 1000
32 let canvasCurrentImageColor = win.canvasCurrentImage
.Background
33 win.menuHightlightRBC
.IsChecked <- displayHealthy
36 let extractRBCPreview (img
: Emgu.CV.Image<Emgu.CV.Structure.Bgr, byte
>) (rbc
: RBC) : Emgu.CV.Image<Emgu.CV.Structure.Bgr, byte
> =
37 let rbcWidth = rbc
.size
.Width
38 let rbcHeight = rbc
.size
.Height
39 let x = rbc
.center
.X - rbcWidth / 2. |> roundInt
40 let y = rbc
.center
.Y - rbcHeight / 2. |> roundInt
41 let w = roundInt
rbcWidth
42 let h = roundInt
rbcHeight
43 img
.GetSubRect(System.Drawing.Rectangle(System.Drawing.Point((if x < 0 then 0 else x), (if y < 0 then 0 else y)),
44 System.Drawing.Size((if x + w >= img
.Width then img
.Width - x else w),
45 (if y + h >= img
.Height then img
.Height - y else h))))
47 let setRBCFrameStyle (srcImg
: SourceImage) (rbc
: RBC) (frame
: Views.RBCFrame) =
48 frame
.Opacity <- if displayHealthy || rbc.setManually
|| rbc.infected
then 1. else 0.
49 let color = if rbc.infected
then srcImg
.InfectedRBCColor else srcImg.HealthyRBCColor
50 frame
.manuallyAdded
.Visibility <- if rbc.setManually
then Visibility.Visible else Visibility.Hidden
51 frame
.manuallyAdded
.Fill <- color
52 frame
.border
.Stroke <- color
54 let RBCFrameFromExisting (srcImg: SourceImage) (rbc: RBC) (frame
: Views.RBCFrame) : Views.RBCFrame =
55 frame
.Visibility <- Visibility.Visible
56 frame
.Height <- rbc.size
.Height
57 frame
.Width <- rbc.size
.Width
59 setRBCFrameStyle srcImg rbc frame
60 frame
.border
.StrokeThickness <- 1.
61 frame
.txtRBCNumber
.Text <- rbc.num
.ToString()
64 let updateDocumentStatus () =
65 win.txtDocumentStatus
.Text <- if state.FilePath = "" then "<New document>" else state.FilePath
67 let statusMessageTimer = Threading.DispatcherTimer()
68 statusMessageTimer.Tick.AddHandler(fun obj args
-> statusMessageTimer.Stop(); win.txtMessageStatus
.Text <- "")
69 statusMessageTimer.Interval <- TimeSpan(0, 0, 2)
70 let displayStatusMessage (message
: string) =
71 win.txtMessageStatus
.Text <- message
72 statusMessageTimer.Stop()
73 statusMessageTimer.Start()
75 let highlightRBCFrame (frame
: Views.RBCFrame) (highlight
: bool) =
76 let rbc = frame
.Tag :?> RBC
79 frame
.border
.StrokeThickness <- 3.
80 if not
rbc.infected
&& not
rbc.setManually
&& not
displayHealthy then frame
.Opacity <- 1.
82 frame
.border
.StrokeThickness <- 1.
83 if not
rbc.infected
&& not
rbc.setManually
&& not
displayHealthy then frame
.Opacity <- 0.
85 let zoomToRBC (rbc: RBC) =
86 win.scrollViewCurrentImage
.ScrollToHorizontalOffset(rbc.center
.X * currentScale - win.scrollViewCurrentImage
.ViewportWidth / 2. + win.borderCurrentImage
.BorderThickness.Left)
87 win.scrollViewCurrentImage
.ScrollToVerticalOffset(rbc.center
.Y * currentScale - win.scrollViewCurrentImage
.ViewportHeight / 2. + win.borderCurrentImage
.BorderThickness.Top)
90 let txtImageName_TextChanged =
91 TextChangedEventHandler(fun obj args
-> state.CurrentImage |> Option.iter
(fun srcImg -> state.SetName srcImg win.txtImageName
.Text))
93 let updateCurrentImageInformation () =
94 win.txtImageName
.TextChanged.RemoveHandler(txtImageName_TextChanged)
95 win.txtImageInformation1
.Inlines.Clear()
96 win.txtImageInformation2
.Inlines.Clear()
97 win.txtImageName
.Text <- ""
99 match state.CurrentImage with
101 win.gridImageInformation
.Visibility <- Visibility.Visible
102 win.txtImageName
.Text <- srcImg.name
103 win.txtImageName
.TextChanged.AddHandler(txtImageName_TextChanged)
106 let parasitemiaStr = Utils.percentText
(state.ImageParasitemia srcImg)
107 win.txtImageInformation1
.Inlines.Add(Documents.Run("Parasitemia: ", FontWeight = FontWeights.Bold))
108 win.txtImageInformation1
.Inlines.Add(parasitemiaStr)
109 win.txtImageInformation1
.Inlines.Add(Documents.LineBreak())
111 win.txtImageInformation1
.Inlines.Add(Documents.Run("Last analysis: ", FontWeight = FontWeights.Bold))
112 win.txtImageInformation1
.Inlines.Add(Documents.Run(if srcImg.dateLastAnalysis
.Ticks = 0L then "<Never>" else srcImg.dateLastAnalysis
.ToLocalTime().ToString()))
114 // The right part part.
115 win.txtImageInformation2
.Inlines.Add(Documents.Run("Added infected erythrocyte: ", FontWeight = FontWeights.Bold))
116 win.txtImageInformation2
.Inlines.Add(Documents.Run((state.ImageNbManuallyChangedRBCStr srcImg true) + " " + (state.ImageManuallyChangedRBCStr srcImg true)))
117 win.txtImageInformation2
.Inlines.Add(Documents.LineBreak())
118 win.txtImageInformation2
.Inlines.Add(Documents.Run("Removed infected erythrocyte: ", FontWeight = FontWeights.Bold))
119 win.txtImageInformation2
.Inlines.Add(Documents.Run((state.ImageNbManuallyChangedRBCStr srcImg false) + " " + (state.ImageManuallyChangedRBCStr srcImg false)))
122 win.gridImageInformation
.Visibility <- Visibility.Hidden
124 let updateGlobalParasitemia () =
125 win.txtGlobalParasitemia
.Inlines.Clear()
126 let total, infected
= state.GlobalParasitemia
127 win.txtGlobalParasitemia
.Inlines.Add(Documents.Run(Utils.percentText
(total, infected
), FontWeight = FontWeights.Bold))
128 if total > 0 && total < warningBelowNumberOfRBC
130 win.txtGlobalParasitemia
.Inlines.Add(
132 sprintf
" Warning: the number of erythrocytes should be above %d" warningBelowNumberOfRBC,
133 FontWeight = FontWeights.Bold,
134 Foreground = Brushes.Red))
136 let updateViewportPreview () =
137 for preview
in win.stackPreviews
.Children |> Seq.cast
<Views.ImageSourcePreview> do
138 let srcImg = preview
.Tag :?> SourceImage
139 if Some srcImg = state.CurrentImage then
140 preview
.viewport
.Visibility <- Visibility.Visible
142 let canvasWidth = win.canvasCurrentImage
.ActualWidth * currentScale
143 let canvasHeight = win.canvasCurrentImage
.ActualHeight * currentScale
144 let previewWidth = (preview
.ActualWidth - preview
.BorderThickness.Left - preview
.BorderThickness.Right)
145 let previewHeight = (preview
.ActualHeight - preview
.BorderThickness.Top - preview
.BorderThickness.Bottom)
147 let marginLeft = previewWidth * (win.scrollViewCurrentImage
.HorizontalOffset - win.borderCurrentImage
.BorderThickness.Left) / canvasWidth - 2.
148 let marginRight = previewWidth * (canvasWidth - (win.scrollViewCurrentImage
.HorizontalOffset - win.borderCurrentImage
.BorderThickness.Right) - win.scrollViewCurrentImage
.ViewportWidth) / canvasWidth - 2.
149 let marginTop = previewHeight * (win.scrollViewCurrentImage
.VerticalOffset - win.borderCurrentImage
.BorderThickness.Top) / canvasHeight - 2.
150 let marginBottom = previewHeight * (canvasHeight - (win.scrollViewCurrentImage
.VerticalOffset - win.borderCurrentImage
.BorderThickness.Bottom) - win.scrollViewCurrentImage
.ViewportHeight) / canvasHeight - 2.
152 preview
.viewport
.Margin <-
159 preview
.viewport
.Visibility <- Visibility.Hidden
161 let rec setAsInfected
(srcImg: SourceImage) (rbc: RBC) (infected
: bool) =
162 state.SetAsInfected rbc infected
163 win.canvasCurrentImage
.Children
164 |> Seq.cast
<Views.RBCFrame>
167 if (frame
.Tag :?> RBC) = rbc
169 setRBCFrameStyle srcImg rbc frame
)
170 updateRBCFramesPreview
()
171 updateCurrentImageInformation ()
172 updateGlobalParasitemia ()
174 and RBCFrame (srcImg: SourceImage) (rbc: RBC) : Views.RBCFrame =
175 let frame = RBCFrameFromExisting srcImg rbc (Views.RBCFrame())
176 frame.SetValue(Panel.ZIndexProperty, Int32.MaxValue - rbc.num
) // To be sure the
177 frame.menuRBCSetAsHealthy
.Click.AddHandler(fun obj args
-> setAsInfected
srcImg (frame.Tag :?> RBC) false)
178 frame.menuRBCSetAsInfected
.Click.AddHandler(fun obj args
-> setAsInfected
srcImg (frame.Tag :?> RBC) true)
179 frame.ContextMenuOpening.AddHandler(
181 if (frame.Tag :?> RBC).infected
183 frame.menuRBCSetAsHealthy
.Visibility <- Visibility.Visible
184 frame.menuRBCSetAsInfected
.Visibility <- Visibility.Collapsed
186 frame.menuRBCSetAsHealthy
.Visibility <- Visibility.Collapsed
187 frame.menuRBCSetAsInfected
.Visibility <- Visibility.Visible)
189 frame.ContextMenuClosing.AddHandler(fun obj args
-> if not
frame.IsMouseOver then highlightRBCFrame frame false )
190 frame.MouseEnter.AddHandler(fun obj args
-> highlightRBCFrame frame true)
191 frame.MouseLeave.AddHandler(fun obj args
-> if not
frame.grid
.ContextMenu.IsOpen then highlightRBCFrame frame false)
194 and updateRBCFramesPreview
() =
195 match state.CurrentImage with
197 let mutable currentPreview = 0
198 for rbc in srcImg.rbcs
|> List.filter
(fun rbc -> displayHealthy || rbc.infected
) do
199 let previewInfected =
200 if currentPreview < win.stackRBC
.Children.Count
202 RBCFrameFromExisting srcImg rbc (win.stackRBC
.Children.[currentPreview] :?> Views.RBCFrame)
204 let f = RBCFrame srcImg rbc
205 f.MouseLeftButtonUp.AddHandler(fun obj args
-> zoomToRBC (f.Tag :?> RBC))
206 win.stackRBC
.Children.Add(f) |> ignore
209 currentPreview <- currentPreview + 1
211 previewInfected.Height <- win.stackRBC
.ActualHeight
212 previewInfected.Width <- win.stackRBC
.ActualHeight * rbc.size
.Width / rbc.size
.Height
213 previewInfected.border
.Fill <- ImageBrush(BitmapSourceConvert.ToBitmapSource(extractRBCPreview srcImg.img
rbc))
215 win.stackRBC
.Children.RemoveRange(currentPreview, win.stackRBC
.Children.Count - currentPreview)
218 updateViewportPreview ()
220 let updateRBCFramesCurrent () =
221 match state.CurrentImage with
223 let mutable currentCanvas = 0
224 for rbc in srcImg.rbcs
do
226 if currentCanvas < win.canvasCurrentImage
.Children.Count
228 RBCFrameFromExisting srcImg rbc (win.canvasCurrentImage
.Children.[currentCanvas] :?> Views.RBCFrame)
230 let f = RBCFrame srcImg rbc
231 f.Root.Opacity <- 0.7
232 win.canvasCurrentImage
.Children.Add(f) |> ignore
235 currentCanvas <- currentCanvas + 1
237 Canvas.SetLeft(frame, rbc.center
.X - rbc.size
.Width / 2.)
238 Canvas.SetTop(frame, rbc.center
.Y - rbc.size
.Height / 2.)
240 for i
in currentCanvas .. win.canvasCurrentImage
.Children.Count - 1 do
241 win.canvasCurrentImage
.Children.[i
].Visibility <- Visibility.Hidden
244 let askDocumentPathToSave () : string option =
245 let dialog = SaveFileDialog(AddExtension = true, DefaultExt = PiaZ.extension
, Filter = PiaZ.filter
)
247 if state.FilePath <> ""
249 dialog.FileName <- FileInfo(state.FilePath).Name
250 elif
state.PatientID <> ""
252 dialog.FileName <- state.PatientID + PiaZ.extension
254 let res = dialog.ShowDialog()
255 if res.HasValue && res.Value then
260 let saveCurrentDocument () =
262 if state.FilePath = ""
264 match askDocumentPathToSave () with
266 state.FilePath <- filepath
271 updateDocumentStatus ()
272 displayStatusMessage "Document saved"
274 | :? IOException as ex ->
275 Log.Error(ex.ToString())
276 MessageBox.Show(sprintf
"The document cannot be save in \"%s\"" state.FilePath, "Error saving the document", MessageBoxButton.OK, MessageBoxImage.Error) |> ignore
278 let saveCurrentDocumentAsNewFile () =
279 match askDocumentPathToSave () with
281 state.FilePath <- filepath
282 saveCurrentDocument ()
285 // Ask the use to save the current document if neccessary.
286 let askSaveCurrent () =
287 if state.AlteredSinceLastSave
289 match MessageBox.Show("Would you like to save the current document?", "Saving the current document", MessageBoxButton.YesNo, MessageBoxImage.Question) with
290 | MessageBoxResult.Yes -> saveCurrentDocument ()
293 let updateCurrentImage () =
294 match state.CurrentImage with
296 win.imgLogos
.Visibility <- Visibility.Collapsed
298 // Highlight the preview.
299 win.stackPreviews
.Children
300 |> Seq.cast
<Views.ImageSourcePreview>
301 |> Seq.iter
(fun preview
-> preview
.border
.BorderThickness <- Thickness(if preview
.Tag = (srcImg :> Object) then 3. else 0.))
303 win.canvasCurrentImage
.Height <- float srcImg.img
.Height
304 win.canvasCurrentImage
.Width <- float srcImg.img
.Width
305 win.canvasCurrentImage
.Background <- ImageBrush(BitmapSourceConvert.ToBitmapSource(srcImg.img
))
307 updateRBCFramesCurrent ()
308 updateRBCFramesPreview
()
311 win.imgLogos
.Visibility <- Visibility.Visible
313 win.stackRBC
.Children.Clear()
314 win.canvasCurrentImage
.Children.Clear()
315 win.canvasCurrentImage
.Background <- canvasCurrentImageColor
317 updateCurrentImageInformation ()
319 let setCurrentImage (srcImg: SourceImage) =
320 if state.CurrentImage.IsNone || state.CurrentImage.Value <> srcImg
322 state.CurrentImage <- Some srcImg
323 updateCurrentImage ()
325 let addPreview (srcImg: SourceImage) =
326 let imgCtrl = Views.ImageSourcePreview(Margin = Thickness(3.))
328 imgCtrl.menuRemoveImage
.Click.AddHandler(fun obj args
->
329 win.stackPreviews
.Children.Remove(imgCtrl)
330 let srcImg = imgCtrl.Tag :?> SourceImage
331 let currentRemoved = Some srcImg = state.CurrentImage
332 state.RemoveSourceImage srcImg
337 updateGlobalParasitemia()
339 // Update image numbers.
340 win.stackPreviews
.Children |> Seq.cast
<Views.ImageSourcePreview> |> Seq.iter
(fun imgPreview
-> imgPreview
.txtImageNumber
.Text <- (imgPreview
.Tag :?> SourceImage).num
.ToString()))
342 imgCtrl.Tag <- srcImg
343 imgCtrl.txtImageNumber
.Text <- srcImg.num
.ToString()
345 let height = srcImg.img
.Height * width / srcImg.img
.Width
346 imgCtrl.imagePreview
.Source <- BitmapSourceConvert.ToBitmapSource(srcImg.img
.Resize(width, height, Emgu.CV.CvEnum.Inter.Cubic))
347 win.stackPreviews
.Children.Add(imgCtrl) |> ignore
349 // Zoom to a mouse position into the control 'imgCtrl'.
350 let zoomTo (mousePos
: Point) =
351 let canvasW = win.canvasCurrentImage
.ActualWidth * currentScale
352 let canvasH = win.canvasCurrentImage
.ActualHeight * currentScale
353 let centerX = (mousePos
.X - imgCtrl.BorderThickness.Left) / (imgCtrl.ActualWidth - imgCtrl.BorderThickness.Left) * canvasW
354 let centerY = (mousePos
.Y - imgCtrl.BorderThickness.Top) / (imgCtrl.ActualHeight - imgCtrl.BorderThickness.Top) * canvasH
355 win.scrollViewCurrentImage
.ScrollToHorizontalOffset(centerX - win.scrollViewCurrentImage
.ViewportWidth / 2. + win.borderCurrentImage
.BorderThickness.Left)
356 win.scrollViewCurrentImage
.ScrollToVerticalOffset(centerY - win.scrollViewCurrentImage
.ViewportHeight / 2. + win.borderCurrentImage
.BorderThickness.Top)
358 imgCtrl.MouseLeftButtonDown.AddHandler(fun obj args
->
359 setCurrentImage (state.SourceImages |> Seq.find
(fun srcImg -> (srcImg :> Object) = imgCtrl.Tag))
360 imgCtrl.UpdateLayout()
361 zoomTo (args
.GetPosition(imgCtrl))
362 imgCtrl.CaptureMouse() |> ignore
)
364 imgCtrl.MouseMove.AddHandler(fun obj args
->
365 if imgCtrl.IsMouseCaptured
367 zoomTo (args
.GetPosition(imgCtrl)))
369 imgCtrl.MouseLeftButtonUp.AddHandler(fun obj args
->
370 if imgCtrl.IsMouseCaptured
372 imgCtrl.ReleaseMouseCapture())
374 let updatePreviews () =
375 win.stackPreviews
.Children.Clear ()
376 for srcImg in state.SourceImages do
378 updateCurrentImage ()
381 win.txtPatient
.Text <- state.PatientID
383 updateGlobalParasitemia ()
384 updateDocumentStatus ()
386 let loadFile (filepath
: string) =
388 let previousFilePath = state.FilePath
390 state.FilePath <- filepath
394 | :? IOException as ex ->
395 Log.Error(ex.ToString())
396 state.FilePath <- previousFilePath
397 MessageBox.Show(sprintf
"The document cannot be loaded from \"%s\"" filepath
, "Error loading the document", MessageBoxButton.OK, MessageBoxImage.Error) |> ignore
400 let dialog = OpenFileDialog(Filter = PiaZ.filter
)
401 let res = dialog.ShowDialog()
402 if res.HasValue && res.Value
403 then loadFile dialog.FileName
410 let exportResults () =
411 let extension = ".txt"
412 let dialog = SaveFileDialog(AddExtension = true, DefaultExt = extension)
414 if state.FilePath <> ""
416 dialog.FileName <- Path.GetFileNameWithoutExtension(state.FilePath) + extension
417 elif
state.PatientID <> ""
419 dialog.FileName <- state.PatientID + extension
421 let res = dialog.ShowDialog()
422 if res.HasValue && res.Value then
424 Export.exportResults state dialog.FileName
426 | :? IOException as ex ->
427 Log.Error(ex.ToString())
428 MessageBox.Show(sprintf
"The results cannot be exported in \"%s\"" state.FilePath, "Error exporting the files", MessageBoxButton.OK, MessageBoxImage.Error) |> ignore
431 let dialog = OpenFileDialog(Filter = "Image Files|*.png;*.jpg;*.tif;*.tiff", Multiselect = true)
432 let res = dialog.ShowDialog()
433 if res.HasValue && res.Value
435 let noSourceImage = state.SourceImages.Count() = 0
437 for filename
in dialog.FileNames do
439 let srcImg = state.AddSourceImage filename defaultConfig
443 Log.Error(ex.ToString())
444 MessageBox.Show(sprintf
"Unable to read the image from \"%s\"" filename, "Error adding an image", MessageBoxButton.OK, MessageBoxImage.Error) |> ignore
446 updateGlobalParasitemia ()
450 updateCurrentImage ()
452 win.txtPatient
.TextChanged.AddHandler(fun obj args
-> state.PatientID <- win.txtPatient
.Text)
454 win.menuExit
.Click.AddHandler(fun obj args
-> win.Root.Close())
455 win.menuSave
.Click.AddHandler(fun obj args
-> saveCurrentDocument ())
456 win.menuSaveAs
.Click.AddHandler(fun obj args
-> saveCurrentDocumentAsNewFile ())
457 win.menuOpen
.Click.AddHandler(fun obj args
-> askLoadFile ())
458 win.menuNew
.Click.AddHandler(fun obj args
-> newFile ())
459 win.menuExportResults
.Click.AddHandler(fun obj args
-> exportResults ())
461 win.menuAddSourceImage
.Click.AddHandler(fun obj args
-> importImage ())
463 win.menuAnalysis
.SubmenuOpened.AddHandler(fun obj args
-> win.menuStartAnalysis
.IsEnabled <- state.SourceImages.Count() > 0)
465 win.menuStartAnalysis
.Click.AddHandler(fun obj args
->
466 if Analysis.showWindow
win.Root state
468 updateGlobalParasitemia ()
469 updateCurrentImage ())
471 win.menuHightlightRBC
.Click.AddHandler(fun obj args
->
472 displayHealthy <- win.menuHightlightRBC
.IsChecked
473 updateRBCFramesPreview
()
474 updateRBCFramesCurrent ())
476 win.menuAbout
.Click.AddHandler(fun obj args
-> About.showWindow
win.Root)
478 win.Root.Closing.AddHandler(fun obj args
-> askSaveCurrent ())
480 // Zoom on the current image.
481 let adjustCurrentImageBorders (deltaX
: float) (deltaY
: float) =
482 win.borderCurrentImage
.BorderThickness <-
484 (win.scrollViewCurrentImage
.ViewportWidth + deltaX
) / 2.,
485 (win.scrollViewCurrentImage
.ViewportHeight + deltaY
) / 2.,
486 (win.scrollViewCurrentImage
.ViewportWidth + deltaX
) / 2.,
487 (win.scrollViewCurrentImage
.ViewportHeight + deltaY
) / 2.)
489 win.canvasCurrentImage
.SizeChanged.AddHandler(fun obj args
->
490 let deltaX = args
.NewSize.Width - args
.PreviousSize.Width
491 let deltaY = args
.NewSize.Height - args
.PreviousSize.Height
492 if deltaX > 0.5 || deltaY > 0.5
494 adjustCurrentImageBorders 0.0
0.0
495 // Center the view at the center of the image initialy.
496 win.scrollViewCurrentImage
.UpdateLayout()
497 win.scrollViewCurrentImage
.ScrollToHorizontalOffset(win.borderCurrentImage
.ActualWidth / 2. - win.scrollViewCurrentImage
.ViewportWidth / 2.)
498 win.scrollViewCurrentImage
.ScrollToVerticalOffset(win.borderCurrentImage
.ActualHeight / 2. - win.scrollViewCurrentImage
.ViewportHeight / 2.))
500 win.scrollViewCurrentImage
.SizeChanged.AddHandler(fun obj args
->
501 let deltaX = args
.NewSize.Width - args
.PreviousSize.Width
502 let deltaY = args
.NewSize.Height - args
.PreviousSize.Height
503 adjustCurrentImageBorders deltaX deltaY
504 win.scrollViewCurrentImage
.ScrollToHorizontalOffset(win.scrollViewCurrentImage
.HorizontalOffset + deltaX / 8.)
505 win.scrollViewCurrentImage
.ScrollToVerticalOffset(win.scrollViewCurrentImage
.VerticalOffset + deltaY / 8.))
507 let mutable maxScale = 4.
508 let mutable minScale = 0.25
509 let currentImageScaleTransform = ScaleTransform()
510 win.canvasCurrentImage
.LayoutTransform <- currentImageScaleTransform
511 win.borderCurrentImage
.PreviewMouseWheel.AddHandler(fun obj args
->
512 let scaleFactor = if args
.Delta > 0 then 2.0 else 0.5
513 if scaleFactor > 1. && currentScale < maxScale || scaleFactor < 1. && currentScale > minScale
515 let previousScale = currentScale
517 let newScale = currentScale * scaleFactor
518 if newScale > maxScale then maxScale elif newScale < minScale then minScale else newScale
519 let realScaleFactor = currentScale / previousScale
521 let centerX = win.scrollViewCurrentImage
.HorizontalOffset + win.scrollViewCurrentImage
.ViewportWidth / 2. - win.borderCurrentImage
.BorderThickness.Left
522 let centerY = win.scrollViewCurrentImage
.VerticalOffset + win.scrollViewCurrentImage
.ViewportHeight / 2. - win.borderCurrentImage
.BorderThickness.Top
524 currentImageScaleTransform.ScaleX <- currentScale
525 currentImageScaleTransform.ScaleY <- currentScale
527 win.scrollViewCurrentImage
.ScrollToHorizontalOffset(centerX * realScaleFactor - win.scrollViewCurrentImage
.ViewportWidth / 2. + win.borderCurrentImage
.BorderThickness.Left)
528 win.scrollViewCurrentImage
.ScrollToVerticalOffset(centerY * realScaleFactor - win.scrollViewCurrentImage
.ViewportHeight / 2. + win.borderCurrentImage
.BorderThickness.Top)
530 args
.Handled <- true)
532 // Pan on the current image.
533 let mutable scrollStartPosition = Point(0., 0.)
534 let mutable scrollStartOffsetX = 0.
535 let mutable scrollStartOffsetY = 0.
536 win.borderCurrentImage
.PreviewMouseLeftButtonDown.AddHandler(fun obj args
->
537 scrollStartPosition <- args
.GetPosition(win.scrollViewCurrentImage
)
538 scrollStartOffsetX <- win.scrollViewCurrentImage
.HorizontalOffset
539 scrollStartOffsetY <- win.scrollViewCurrentImage
.VerticalOffset
540 win.borderCurrentImage
.Cursor <- Input.Cursors.ScrollAll
541 win.borderCurrentImage
.CaptureMouse() |> ignore
542 args
.Handled <- true)
544 win.borderCurrentImage
.PreviewMouseMove.AddHandler(fun obj args
->
545 if win.borderCurrentImage
.IsMouseCaptured
547 let position = args
.GetPosition(win.scrollViewCurrentImage
)
548 let deltaX = scrollStartPosition.X - position.X
549 let deltaY = scrollStartPosition.Y - position.Y
550 win.scrollViewCurrentImage
.ScrollToHorizontalOffset(deltaX + scrollStartOffsetX)
551 win.scrollViewCurrentImage
.ScrollToVerticalOffset(deltaY + scrollStartOffsetY)
553 args
.Handled <- true)
555 win.borderCurrentImage
.PreviewMouseLeftButtonUp.AddHandler(fun obj args
->
556 if win.borderCurrentImage
.IsMouseCaptured
558 win.borderCurrentImage
.Cursor <- Input.Cursors.Arrow
559 win.borderCurrentImage
.ReleaseMouseCapture()
560 args
.Handled <- true)
564 win.Root.InputBindings.Add(
566 FSharp.ViewModule.FunCommand((fun obj
-> saveCurrentDocument ()), (fun obj
-> true)),
567 Input.KeyGesture(Input.Key.S, Input.ModifierKeys.Control))) |> ignore
570 win.Root.InputBindings.Add(
572 FSharp.ViewModule.FunCommand((fun obj
-> saveCurrentDocumentAsNewFile ()), (fun obj
-> true)),
573 Input.KeyGesture(Input.Key.S, Input.ModifierKeys.Control ||| Input.ModifierKeys.Shift))) |> ignore
576 win.Root.InputBindings.Add(
578 FSharp.ViewModule.FunCommand((fun obj
-> askLoadFile ()), (fun obj
-> true)),
579 Input.KeyGesture(Input.Key.O, Input.ModifierKeys.Control))) |> ignore
582 win.Root.InputBindings.Add(
584 FSharp.ViewModule.FunCommand((fun obj
-> newFile ()), (fun obj
-> true)),
585 Input.KeyGesture(Input.Key.N, Input.ModifierKeys.Control))) |> ignore
588 win.Root.InputBindings.Add(
590 FSharp.ViewModule.FunCommand((fun obj
-> exportResults ()), (fun obj
-> true)),
591 Input.KeyGesture(Input.Key.E, Input.ModifierKeys.Control))) |> ignore
594 win.Root.InputBindings.Add(
596 FSharp.ViewModule.FunCommand((fun obj
-> importImage ()), (fun obj
-> true)),
597 Input.KeyGesture(Input.Key.A, Input.ModifierKeys.Control))) |> ignore
600 win.scrollViewCurrentImage
.ScrollChanged.AddHandler(fun obj args
-> updateViewportPreview ())
602 updateDocumentStatus ()
603 win.gridImageInformation
.Visibility <- Visibility.Hidden
607 match fileToOpen
with
608 | Some filepath
-> loadFile filepath