2ff3116245197b634b369b26065563011e63f3fd
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 mainWindow = Views.MainWindow()
25 let ctrl (name
: string): 'a = mainWindow.Root.FindName(name) :?> 'a
27 let state = State.State()
28 let mutable currentScale = 1.
29 let mutable displayHealthy = false
31 let menuExit: MenuItem = ctrl "menuExit"
32 let menuSaveFile: MenuItem = ctrl "menuSave"
33 let menuSaveAsFile: MenuItem = ctrl "menuSaveAs"
34 let menuLoadFile: MenuItem = ctrl "menuOpen"
35 let menuNewFile: MenuItem = ctrl "menuNew"
36 let menuAddSourceImage: MenuItem = ctrl "menuAddSourceImage"
37 let menuAnalysis: MenuItem = ctrl "menuAnalysis"
38 let menuStartAnalysis: MenuItem = ctrl "menuStartAnalysis"
39 let menuView: MenuItem = ctrl "menuView"
40 let menuHightlightRBC: MenuItem = ctrl "menuHightlightRBC"
41 let menuAbout: MenuItem = ctrl "menuAbout"
43 let txtDocumentStatus: TextBlock = ctrl "txtDocumentStatus"
44 let txtMessageStatus: TextBlock = ctrl "txtMessageStatus"
46 let txtPatient: TextBox = ctrl "txtPatient"
47 let txtGlobalParasitemia: TextBox = ctrl "txtGlobalParasitemia"
49 let stackPreviews: StackPanel = ctrl "stackPreviews"
51 let scrollViewCurrentImage: ScrollViewer = ctrl "scrollViewCurrentImage"
52 let borderCurrentImage: Border = ctrl "borderCurrentImage"
53 let canvasCurrentImage: Canvas = ctrl "canvasCurrentImage"
54 let txtImageInformation1: TextBlock = ctrl "txtImageInformation1"
55 let txtImageInformation2: TextBlock = ctrl "txtImageInformation2"
57 let scrollRBC: ScrollViewer = ctrl "scrollRBC"
58 let stackRBC: StackPanel = ctrl "stackRBC"
60 let imgLogos: Border = ctrl "imgLogos"
63 let canvasCurrentImageColor = canvasCurrentImage.Background
64 menuHightlightRBC.IsChecked <- displayHealthy
67 let extractRBCPreview (img
: Emgu.CV.Image<Emgu.CV.Structure.Bgr, byte
>) (rbc
: RBC) : Emgu.CV.Image<Emgu.CV.Structure.Bgr, byte
> =
68 let rbcWidth = rbc
.size
.Width
69 let rbcHeight = rbc
.size
.Height
70 let x = rbc
.center
.X - rbcWidth / 2. |> roundInt
71 let y = rbc
.center
.Y - rbcHeight / 2. |> roundInt
72 let w = roundInt
rbcWidth
73 let h = roundInt
rbcHeight
74 img
.GetSubRect(System.Drawing.Rectangle(System.Drawing.Point((if x < 0 then 0 else x), (if y < 0 then 0 else y)),
75 System.Drawing.Size((if x + w >= img
.Width then img
.Width - x else w),
76 (if y + h >= img
.Height then img
.Height - y else h))))
78 let setRBCFrameStyle (srcImg
: SourceImage) (rbc
: RBC) (frame
: Views.RBCFrame) =
79 frame
.Opacity <- if displayHealthy || rbc.setManually
|| rbc.infected
then 1. else 0.
80 let color = if rbc.infected
then srcImg
.InfectedRBCColor else srcImg.HealthyRBCColor
81 frame
.manuallyAdded
.Visibility <- if rbc.setManually
then Visibility.Visible else Visibility.Hidden
82 frame
.manuallyAdded
.Fill <- color
83 frame
.border
.Stroke <- color
85 let RBCFrameFromExisting (srcImg: SourceImage) (rbc: RBC) (frame
: Views.RBCFrame) : Views.RBCFrame =
86 frame
.Visibility <- Visibility.Visible
87 frame
.Height <- rbc.size
.Height
88 frame
.Width <- rbc.size
.Width
90 setRBCFrameStyle srcImg rbc frame
91 frame
.border
.StrokeThickness <- 1.
92 frame
.txtRBCNumber
.Text <- rbc.num
.ToString()
95 let updateDocumentStatus () =
96 txtDocumentStatus.Text <- if state.FilePath = "" then "<New document>" else state.FilePath
98 let statusMessageTimer = Threading.DispatcherTimer()
99 statusMessageTimer.Tick.AddHandler(fun obj args
-> statusMessageTimer.Stop(); txtMessageStatus.Text <- "")
100 statusMessageTimer.Interval <- TimeSpan(0, 0, 2)
101 let displayStatusMessage (message
: string) =
102 txtMessageStatus.Text <- message
103 statusMessageTimer.Stop()
104 statusMessageTimer.Start()
106 let highlightRBCFrame (frame
: Views.RBCFrame) (highlight
: bool) =
107 let rbc = frame
.Tag :?> RBC
110 frame
.border
.StrokeThickness <- 3.
111 if not
rbc.infected
&& not
rbc.setManually
&& not
displayHealthy then frame
.Opacity <- 1.
113 frame
.border
.StrokeThickness <- 1.
114 if not
rbc.infected
&& not
rbc.setManually
&& not
displayHealthy then frame
.Opacity <- 0.
116 let zoomToRBC (rbc: RBC) =
117 scrollViewCurrentImage.ScrollToHorizontalOffset(rbc.center
.X * currentScale - scrollViewCurrentImage.ViewportWidth / 2. + borderCurrentImage.BorderThickness.Left)
118 scrollViewCurrentImage.ScrollToVerticalOffset(rbc.center
.Y * currentScale - scrollViewCurrentImage.ViewportHeight / 2. + borderCurrentImage.BorderThickness.Top)
120 let percentText (nbTotal
: int, nb
: int) : string =
125 let percent = 100. * (float nb) / (float nbTotal)
126 sprintf
"%.1f %% (%d / %d)" percent nb nbTotal
128 let updateCurrentImageInformation () =
129 txtImageInformation1.Inlines.Clear()
130 txtImageInformation2.Inlines.Clear()
132 match state.CurrentImage with
134 let parasitemiaStr = percentText (state.ImageParasitemia srcImg)
135 txtImageInformation1.Inlines.Add(Documents.Run("Parasitemia: ", FontWeight = FontWeights.Bold))
136 txtImageInformation1.Inlines.Add(parasitemiaStr)
137 txtImageInformation1.Inlines.Add(Documents.LineBreak())
139 txtImageInformation1.Inlines.Add(Documents.Run("Last analysis: ", FontWeight = FontWeights.Bold))
140 txtImageInformation1.Inlines.Add(Documents.Run(if srcImg.dateLastAnalysis
.Ticks = 0L then "<Never>" else srcImg.dateLastAnalysis
.ToLocalTime().ToString()))
142 let alteredStr = percentText (state.ImageNbAltered srcImg)
143 txtImageInformation2.Inlines.Add(Documents.Run("Number of erytrocytes manually altered: ", FontWeight = FontWeights.Bold))
144 txtImageInformation2.Inlines.Add(Documents.Run(alteredStr))
145 txtImageInformation2.Inlines.Add(Documents.LineBreak())
147 txtImageInformation2.Inlines.Add(Documents.Run("Average erytrocyte diameter: ", FontWeight = FontWeights.Bold))
148 txtImageInformation2.Inlines.Add(Documents.Run(srcImg.config
.RBCRadius.ToString()))
151 let updateGlobalParasitemia () =
152 txtGlobalParasitemia.Text <- percentText state.GlobalParasitemia
154 let updateViewportPreview () =
155 for preview
in stackPreviews.Children |> Seq.cast
<Views.ImageSourcePreview> do
156 let srcImg = preview
.Tag :?> SourceImage
157 if Some srcImg = state.CurrentImage then
158 preview
.viewport
.Visibility <- Visibility.Visible
160 let canvasWidth = canvasCurrentImage.ActualWidth * currentScale
161 let canvasHeight = 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)
165 let marginLeft = previewWidth * (scrollViewCurrentImage.HorizontalOffset - borderCurrentImage.BorderThickness.Left) / canvasWidth - 2.
166 let marginRight = previewWidth * (canvasWidth - (scrollViewCurrentImage.HorizontalOffset - borderCurrentImage.BorderThickness.Right) - scrollViewCurrentImage.ViewportWidth) / canvasWidth - 2.
167 let marginTop = previewHeight * (scrollViewCurrentImage.VerticalOffset - borderCurrentImage.BorderThickness.Top) / canvasHeight - 2.
168 let marginBottom = previewHeight * (canvasHeight - (scrollViewCurrentImage.VerticalOffset - borderCurrentImage.BorderThickness.Bottom) - scrollViewCurrentImage.ViewportHeight) / canvasHeight - 2.
170 preview
.viewport
.Margin <-
177 preview
.viewport
.Visibility <- Visibility.Hidden
179 let rec setAsInfected
(srcImg: SourceImage) (rbc: RBC) (infected
: bool) =
180 state.SetAsInfected rbc infected
181 canvasCurrentImage.Children
182 |> Seq.cast
<Views.RBCFrame>
185 if (frame
.Tag :?> RBC) = rbc
187 setRBCFrameStyle srcImg rbc frame
)
188 updateRBCFramesPreview
()
189 updateCurrentImageInformation ()
190 updateGlobalParasitemia ()
192 and RBCFrame (srcImg: SourceImage) (rbc: RBC) : Views.RBCFrame =
193 let frame = RBCFrameFromExisting srcImg rbc (Views.RBCFrame())
194 frame.SetValue(Panel.ZIndexProperty, Int32.MaxValue - rbc.num
) // To be sure the
195 frame.menuRBCSetAsHealthy
.Click.AddHandler(fun obj args
-> setAsInfected
srcImg (frame.Tag :?> RBC) false)
196 frame.menuRBCSetAsInfected
.Click.AddHandler(fun obj args
-> setAsInfected
srcImg (frame.Tag :?> RBC) true)
197 frame.ContextMenuOpening.AddHandler(
199 if (frame.Tag :?> RBC).infected
201 frame.menuRBCSetAsHealthy
.Visibility <- Visibility.Visible
202 frame.menuRBCSetAsInfected
.Visibility <- Visibility.Collapsed
204 frame.menuRBCSetAsHealthy
.Visibility <- Visibility.Collapsed
205 frame.menuRBCSetAsInfected
.Visibility <- Visibility.Visible)
207 frame.ContextMenuClosing.AddHandler(fun obj args
-> if not
frame.IsMouseOver then highlightRBCFrame frame false )
208 frame.MouseEnter.AddHandler(fun obj args
-> highlightRBCFrame frame true)
209 frame.MouseLeave.AddHandler(fun obj args
-> if not
frame.grid
.ContextMenu.IsOpen then highlightRBCFrame frame false)
212 and updateRBCFramesPreview
() =
213 match state.CurrentImage with
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 < stackRBC.Children.Count
220 RBCFrameFromExisting srcImg rbc (stackRBC.Children.[currentPreview] :?> Views.RBCFrame)
222 let f = RBCFrame srcImg rbc
223 f.MouseLeftButtonUp.AddHandler(fun obj args
-> zoomToRBC (f.Tag :?> RBC))
224 stackRBC.Children.Add(f) |> ignore
227 currentPreview <- currentPreview + 1
229 previewInfected.Height <- stackRBC.ActualHeight
230 previewInfected.Width <- stackRBC.ActualHeight * rbc.size
.Width / rbc.size
.Height
231 previewInfected.border
.Fill <- ImageBrush(BitmapSourceConvert.ToBitmapSource(extractRBCPreview srcImg.img
rbc))
233 stackRBC.Children.RemoveRange(currentPreview, stackRBC.Children.Count - currentPreview)
236 updateViewportPreview ()
238 let updateRBCFramesCurrent () =
239 match state.CurrentImage with
241 let mutable currentCanvas = 0
242 for rbc in srcImg.rbcs
do
244 if currentCanvas < canvasCurrentImage.Children.Count
246 RBCFrameFromExisting srcImg rbc (canvasCurrentImage.Children.[currentCanvas] :?> Views.RBCFrame)
248 let f = RBCFrame srcImg rbc
249 f.Root.Opacity <- 0.7
250 canvasCurrentImage.Children.Add(f) |> ignore
253 currentCanvas <- currentCanvas + 1
255 Canvas.SetLeft(frame, rbc.center
.X - rbc.size
.Width / 2.)
256 Canvas.SetTop(frame, rbc.center
.Y - rbc.size
.Height / 2.)
258 for i
in currentCanvas .. canvasCurrentImage.Children.Count - 1 do
259 canvasCurrentImage.Children.[i
].Visibility <- Visibility.Hidden
262 let askDocumentPathToSave () : string option =
263 let dialog = SaveFileDialog(AddExtension = true, DefaultExt = PiaZ.extension
, Filter = PiaZ.filter
)
265 if state.FilePath <> ""
267 dialog.FileName <- FileInfo(state.FilePath).Name
268 elif
state.PatientID <> ""
270 dialog.FileName <- state.PatientID + PiaZ.extension
272 let res = dialog.ShowDialog()
273 if res.HasValue && res.Value then
278 let saveCurrentDocument () =
280 if state.FilePath = ""
282 match askDocumentPathToSave () with
284 state.FilePath <- filepath
289 updateDocumentStatus ()
290 displayStatusMessage "Document saved"
292 | :? IOException as ex ->
293 Log.Error(ex.ToString())
294 MessageBox.Show(sprintf
"The document cannot be save in '%s'" state.FilePath, "Error saving the document", MessageBoxButton.OK, MessageBoxImage.Error) |> ignore
296 let saveCurrentDocumentAsNewFile () =
297 match askDocumentPathToSave () with
299 state.FilePath <- filepath
300 saveCurrentDocument ()
303 // Ask the use to save the current document if neccessary.
304 let askSaveCurrent () =
305 if state.AlteredSinceLastSave
307 match MessageBox.Show("Would you like to save the current document?", "Saving the current document", MessageBoxButton.YesNo, MessageBoxImage.Question) with
308 | MessageBoxResult.Yes -> saveCurrentDocument ()
311 let updateCurrentImage () =
312 match state.CurrentImage with
314 imgLogos.Visibility <- Visibility.Collapsed
316 // Highlight the preview.
317 stackPreviews.Children
318 |> Seq.cast
<Views.ImageSourcePreview>
319 |> Seq.iter
(fun preview
-> preview
.border
.BorderThickness <- Thickness(if preview
.Tag = (srcImg :> Object) then 3. else 0.))
321 canvasCurrentImage.Height <- float srcImg.img
.Height
322 canvasCurrentImage.Width <- float srcImg.img
.Width
323 canvasCurrentImage.Background <- ImageBrush(BitmapSourceConvert.ToBitmapSource(srcImg.img
))
325 updateRBCFramesCurrent ()
326 updateRBCFramesPreview
()
329 imgLogos.Visibility <- Visibility.Visible
331 stackRBC.Children.Clear()
332 canvasCurrentImage.Children.Clear()
333 canvasCurrentImage.Background <- canvasCurrentImageColor
335 updateCurrentImageInformation ()
337 let setCurrentImage (srcImg: SourceImage) =
338 if state.CurrentImage.IsNone || state.CurrentImage.Value <> srcImg
340 state.CurrentImage <- Some srcImg
341 updateCurrentImage ()
343 let addPreview (srcImg: SourceImage) =
344 let imgCtrl = Views.ImageSourcePreview(Margin = Thickness(3.))
346 imgCtrl.menuRemoveImage
.Click.AddHandler(fun obj args
->
347 stackPreviews.Children.Remove(imgCtrl)
348 let srcImg = imgCtrl.Tag :?> SourceImage
349 let currentRemoved = Some srcImg = state.CurrentImage
350 state.RemoveSourceImage srcImg
355 updateGlobalParasitemia()
357 // Update image numbers.
358 stackPreviews.Children |> Seq.cast
<Views.ImageSourcePreview> |> Seq.iter
(fun imgPreview
-> imgPreview
.txtImageNumber
.Text <- (imgPreview
.Tag :?> SourceImage).num
.ToString()))
360 imgCtrl.Tag <- srcImg
361 imgCtrl.txtImageNumber
.Text <- srcImg.num
.ToString()
363 let height = srcImg.img
.Height * width / srcImg.img
.Width
364 imgCtrl.imagePreview
.Source <- BitmapSourceConvert.ToBitmapSource(srcImg.img
.Resize(width, height, Emgu.CV.CvEnum.Inter.Cubic))
365 stackPreviews.Children.Add(imgCtrl) |> ignore
367 // Zoom to a mouse position into the control 'imgCtrl'.
368 let zoomTo (mousePos
: Point) =
369 let canvasW = canvasCurrentImage.ActualWidth * currentScale
370 let canvasH = canvasCurrentImage.ActualHeight * currentScale
371 let centerX = (mousePos
.X - imgCtrl.BorderThickness.Left) / (imgCtrl.ActualWidth - imgCtrl.BorderThickness.Left) * canvasW
372 let centerY = (mousePos
.Y - imgCtrl.BorderThickness.Top) / (imgCtrl.ActualHeight - imgCtrl.BorderThickness.Top) * canvasH
373 scrollViewCurrentImage.ScrollToHorizontalOffset(centerX - scrollViewCurrentImage.ViewportWidth / 2. + borderCurrentImage.BorderThickness.Left)
374 scrollViewCurrentImage.ScrollToVerticalOffset(centerY - scrollViewCurrentImage.ViewportHeight / 2. + borderCurrentImage.BorderThickness.Top)
376 imgCtrl.MouseLeftButtonDown.AddHandler(fun obj args
->
377 setCurrentImage (state.SourceImages |> Seq.find
(fun srcImg -> (srcImg :> Object) = imgCtrl.Tag))
378 imgCtrl.UpdateLayout()
379 zoomTo (args
.GetPosition(imgCtrl))
380 imgCtrl.CaptureMouse() |> ignore
)
382 imgCtrl.MouseMove.AddHandler(fun obj args
->
383 if imgCtrl.IsMouseCaptured
385 zoomTo (args
.GetPosition(imgCtrl)))
387 imgCtrl.MouseLeftButtonUp.AddHandler(fun obj args
->
388 if imgCtrl.IsMouseCaptured
390 imgCtrl.ReleaseMouseCapture())
392 let updatePreviews () =
393 stackPreviews.Children.Clear ()
394 for srcImg in state.SourceImages do
396 updateCurrentImage ()
399 txtPatient.Text <- state.PatientID
401 updateGlobalParasitemia ()
402 updateDocumentStatus ()
404 let loadFile (filepath
: string) =
406 let previousFilePath = state.FilePath
408 state.FilePath <- filepath
412 | :? IOException as ex ->
413 Log.Error(ex.ToString())
414 state.FilePath <- previousFilePath
415 MessageBox.Show(sprintf
"The document cannot be loaded from '%s'" state.FilePath, "Error loading the document", MessageBoxButton.OK, MessageBoxImage.Error) |> ignore
418 let dialog = OpenFileDialog(Filter = PiaZ.filter
)
419 let res = dialog.ShowDialog()
420 if res.HasValue && res.Value
421 then loadFile dialog.FileName
428 txtPatient.TextChanged.AddHandler(fun obj args
-> state.PatientID <- txtPatient.Text)
430 menuExit.Click.AddHandler(fun obj args
-> mainWindow.Root.Close())
431 menuSaveFile.Click.AddHandler(fun obj args
-> saveCurrentDocument ())
432 menuSaveAsFile.Click.AddHandler(fun obj args
-> saveCurrentDocumentAsNewFile ())
433 menuLoadFile.Click.AddHandler(fun obj args
-> askLoadFile ())
434 menuNewFile.Click.AddHandler(fun obj args
-> newFile ())
436 menuAddSourceImage.Click.AddHandler(fun obj args
->
437 let dialog = OpenFileDialog(Filter = "Image Files|*.png;*.jpg;*.tif;*.tiff", Multiselect = true)
438 let res = dialog.ShowDialog()
439 if res.HasValue && res.Value
441 let noSourceImage = state.SourceImages.Count() = 0
443 for filename
in dialog.FileNames do
445 let srcImg = state.AddSourceImage filename defaultConfig
449 Log.Error(ex.ToString())
450 MessageBox.Show(sprintf
"Unable to read the image from '%s'" filename, "Error adding an image", MessageBoxButton.OK, MessageBoxImage.Error) |> ignore
452 updateGlobalParasitemia ()
456 updateCurrentImage ())
458 menuAnalysis.SubmenuOpened.AddHandler(fun obj args
-> menuStartAnalysis.IsEnabled <- state.SourceImages.Count() > 0)
460 menuStartAnalysis.Click.AddHandler(fun obj args
->
461 if Analysis.showWindow
mainWindow.Root state
463 updateGlobalParasitemia ()
464 updateCurrentImage ())
466 menuHightlightRBC.Click.AddHandler(fun obj args
->
467 displayHealthy <- menuHightlightRBC.IsChecked
468 updateRBCFramesPreview
()
469 updateRBCFramesCurrent ())
471 menuAbout.Click.AddHandler(fun obj args
-> About.showWindow
mainWindow.Root)
473 mainWindow.Root.Closing.AddHandler(fun obj args
-> askSaveCurrent ())
475 // Zoom on the current image.
476 let adjustCurrentImageBorders (deltaX
: float) (deltaY
: float) =
477 borderCurrentImage.BorderThickness <-
479 (scrollViewCurrentImage.ViewportWidth + deltaX
) / 2.,
480 (scrollViewCurrentImage.ViewportHeight + deltaY
) / 2.,
481 (scrollViewCurrentImage.ViewportWidth + deltaX
) / 2.,
482 (scrollViewCurrentImage.ViewportHeight + deltaY
) / 2.)
484 canvasCurrentImage.SizeChanged.AddHandler(fun obj args
->
485 let deltaX = args
.NewSize.Width - args
.PreviousSize.Width
486 let deltaY = args
.NewSize.Height - args
.PreviousSize.Height
487 if deltaX > 0.5 || deltaY > 0.5
489 adjustCurrentImageBorders 0.0
0.0
490 // Center the view at the center of the image initialy.
491 scrollViewCurrentImage.UpdateLayout()
492 scrollViewCurrentImage.ScrollToHorizontalOffset(borderCurrentImage.ActualWidth / 2. - scrollViewCurrentImage.ViewportWidth / 2.)
493 scrollViewCurrentImage.ScrollToVerticalOffset(borderCurrentImage.ActualHeight / 2. - scrollViewCurrentImage.ViewportHeight / 2.))
495 scrollViewCurrentImage.SizeChanged.AddHandler(fun obj args
->
496 let deltaX = args
.NewSize.Width - args
.PreviousSize.Width
497 let deltaY = args
.NewSize.Height - args
.PreviousSize.Height
498 adjustCurrentImageBorders deltaX deltaY
499 scrollViewCurrentImage.ScrollToHorizontalOffset(scrollViewCurrentImage.HorizontalOffset + deltaX / 8.)
500 scrollViewCurrentImage.ScrollToVerticalOffset(scrollViewCurrentImage.VerticalOffset + deltaY / 8.))
502 let mutable maxScale = 4.
503 let mutable minScale = 0.25
504 let currentImageScaleTransform = ScaleTransform()
505 canvasCurrentImage.LayoutTransform <- currentImageScaleTransform
506 borderCurrentImage.PreviewMouseWheel.AddHandler(fun obj args
->
507 let scaleFactor = if args
.Delta > 0 then 2.0 else 0.5
508 if scaleFactor > 1. && currentScale < maxScale || scaleFactor < 1. && currentScale > minScale
510 let previousScale = currentScale
512 let newScale = currentScale * scaleFactor
513 if newScale > maxScale then maxScale elif newScale < minScale then minScale else newScale
514 let realScaleFactor = currentScale / previousScale
516 let centerX = scrollViewCurrentImage.HorizontalOffset + scrollViewCurrentImage.ViewportWidth / 2. - borderCurrentImage.BorderThickness.Left
517 let centerY = scrollViewCurrentImage.VerticalOffset + scrollViewCurrentImage.ViewportHeight / 2. - borderCurrentImage.BorderThickness.Top
519 currentImageScaleTransform.ScaleX <- currentScale
520 currentImageScaleTransform.ScaleY <- currentScale
522 scrollViewCurrentImage.ScrollToHorizontalOffset(centerX * realScaleFactor - scrollViewCurrentImage.ViewportWidth / 2. + borderCurrentImage.BorderThickness.Left)
523 scrollViewCurrentImage.ScrollToVerticalOffset(centerY * realScaleFactor - scrollViewCurrentImage.ViewportHeight / 2. + borderCurrentImage.BorderThickness.Top)
525 args
.Handled <- true)
527 // Pan on the current image.
528 let mutable scrollStartPosition = Point(0., 0.)
529 let mutable scrollStartOffsetX = 0.
530 let mutable scrollStartOffsetY = 0.
531 borderCurrentImage.PreviewMouseLeftButtonDown.AddHandler(fun obj args
->
532 scrollStartPosition <- args
.GetPosition(scrollViewCurrentImage)
533 scrollStartOffsetX <- scrollViewCurrentImage.HorizontalOffset
534 scrollStartOffsetY <- scrollViewCurrentImage.VerticalOffset
535 borderCurrentImage.Cursor <- Input.Cursors.ScrollAll
536 borderCurrentImage.CaptureMouse() |> ignore
537 args
.Handled <- true)
539 borderCurrentImage.PreviewMouseMove.AddHandler(fun obj args
->
540 if borderCurrentImage.IsMouseCaptured
542 let position = args
.GetPosition(scrollViewCurrentImage)
543 let deltaX = scrollStartPosition.X - position.X
544 let deltaY = scrollStartPosition.Y - position.Y
545 scrollViewCurrentImage.ScrollToHorizontalOffset(deltaX + scrollStartOffsetX)
546 scrollViewCurrentImage.ScrollToVerticalOffset(deltaY + scrollStartOffsetY)
548 args
.Handled <- true)
550 borderCurrentImage.PreviewMouseLeftButtonUp.AddHandler(fun obj args
->
551 if borderCurrentImage.IsMouseCaptured
553 borderCurrentImage.Cursor <- Input.Cursors.Arrow
554 borderCurrentImage.ReleaseMouseCapture()
555 args
.Handled <- true)
559 mainWindow.Root.InputBindings.Add(
561 FSharp.ViewModule.FunCommand((fun obj
-> saveCurrentDocument ()), (fun obj
-> true)),
562 Input.KeyGesture(Input.Key.S, Input.ModifierKeys.Control))) |> ignore
565 mainWindow.Root.InputBindings.Add(
567 FSharp.ViewModule.FunCommand((fun obj
-> saveCurrentDocumentAsNewFile ()), (fun obj
-> true)),
568 Input.KeyGesture(Input.Key.S, Input.ModifierKeys.Control ||| Input.ModifierKeys.Shift))) |> ignore
571 mainWindow.Root.InputBindings.Add(
573 FSharp.ViewModule.FunCommand((fun obj
-> askLoadFile ()), (fun obj
-> true)),
574 Input.KeyGesture(Input.Key.O, Input.ModifierKeys.Control))) |> ignore
577 mainWindow.Root.InputBindings.Add(
579 FSharp.ViewModule.FunCommand((fun obj
-> newFile ()), (fun obj
-> true)),
580 Input.KeyGesture(Input.Key.N, Input.ModifierKeys.Control))) |> ignore
583 scrollViewCurrentImage.ScrollChanged.AddHandler(fun obj args
-> updateViewportPreview ())
585 updateDocumentStatus ()
587 mainWindow.Root.Show()
589 match fileToOpen
with
590 | Some filepath
-> loadFile filepath