GUI (work in progress..)

[master-thesis.git] / Parasitemia / Parasitemia / GUI / GUI.fs

diff --git a/Parasitemia/Parasitemia/GUI/GUI.fs b/Parasitemia/Parasitemia/GUI/GUI.fs
index 155c1d1..6f11379 100644 (file)
--- a/Parasitemia/Parasitemia/GUI/GUI.fs
+++ b/Parasitemia/Parasitemia/GUI/GUI.fs
@@ -1,12 +1,12 @@
-module Parasitemia.GUI
+module Parasitemia.GUI.Main
 
 open System.IO
+open System.Linq
 open System.Windows
 open System.Windows.Media
 open System.Windows.Markup
 open System.Windows.Shapes
 open System.Windows.Controls
-open System.Drawing
 open System.Diagnostics
 open Microsoft.Win32 // For the common dialogs.
 
@@ -15,6 +15,7 @@ open Microsoft.Win32 // For the common dialogs.
 open Emgu.CV.WPF
 
 open Config
+open Types
 
 let run (defaultConfig: Config) =
     let app = new Application()
@@ -24,6 +25,8 @@ let run (defaultConfig: Config) =
 
     // Utils.log <- (fun m -> log mainWindow m)
 
+    let currentImageMargin = 0.1 // 10 %.
+
     let state = State.State()
 
     let exit: MenuItem = ctrl "menuExit"
@@ -32,25 +35,39 @@ let run (defaultConfig: Config) =
     let newFile: MenuItem = ctrl "menuNew"
 
     let addSourceImage: MenuItem = ctrl "menuAddSourceImage"
-
     let txtPatient: TextBox = ctrl "txtPatient"
-
     let stackPreviews: StackPanel = ctrl "stackPreviews"
-
     let butStartAnalysis: Button = ctrl "butStartAnalysis"
 
+    let scrollViewCurrentImage: ScrollViewer = ctrl "scrollViewCurrentImage"
+    let borderCurrentImage: Border = ctrl "borderCurrentImage"
+    let canvasCurrentImage: Canvas = ctrl "canvasCurrentImage"
+
+    // Initializations.
+
+    // Operations.
     let synchronizeState () =
         state.PatientID <- txtPatient.Text
 
+    let setCurrentImage (srcImg: SourceImage) =
+        canvasCurrentImage.Height <- float srcImg.img.Height
+        canvasCurrentImage.Width <- float srcImg.img.Width
+        canvasCurrentImage.Background <- ImageBrush(BitmapSourceConvert.ToBitmapSource(srcImg.img))
+        (*for rbc in srcImg.rbcs do
+            let rectangle = Rectangle(Height = float rbc.size.Height, Width = float rbc.size.Width, )*)
+
+    let addPreview (srcImg: SourceImage) =
+        let imgCtrl = Views.ImageSourcePreview(Margin = Thickness(3.))
+        imgCtrl.lblImageNumber.Content <- srcImg.num
+        let width = 200
+        let height = srcImg.img.Height * width / srcImg.img.Width
+        imgCtrl.imagePreview.Source <- BitmapSourceConvert.ToBitmapSource(srcImg.img.Resize(width, height, Emgu.CV.CvEnum.Inter.Cubic))
+        stackPreviews.Children.Add(imgCtrl) |> ignore
+
     let updatePreviews () =
         stackPreviews.Children.Clear ()
-        state.ImagesSource |> Seq.iteri (fun i imgSrc ->
-            let imgCtrl = Views.ImageSourcePreview(Margin = Thickness(3.))
-            imgCtrl.lblImageNumber.Content <- i + 1
-            let width = 200
-            let height = imgSrc.img.Height * width / imgSrc.img.Width
-            imgCtrl.imagePreview.Source <- BitmapSourceConvert.ToBitmapSource(imgSrc.img.Resize(width, height, Emgu.CV.CvEnum.Inter.Cubic))
-            stackPreviews.Children.Add(imgCtrl) |> ignore )
+        for srcImg in state.SourceImages do
+            addPreview srcImg
 
     let updateGUI () =
         txtPatient.Text <- state.PatientID
@@ -90,11 +107,78 @@ let run (defaultConfig: Config) =
         let res = dialog.ShowDialog()
         if res.HasValue && res.Value
         then
-            state.AddSourceImage(dialog.FileName)
-            updatePreviews ())
+            let srcImg = state.AddSourceImage(dialog.FileName)
+            addPreview srcImg
+            if state.SourceImages.Count() = 1
+            then
+                setCurrentImage srcImg)
 
     butStartAnalysis.Click.AddHandler(fun obj args -> ())
 
+    // Zoom on the current image.
+    let adjustCurrentImageMargins () =
+        borderCurrentImage.BorderThickness <-
+            Thickness(scrollViewCurrentImage.ViewportWidth / 2., scrollViewCurrentImage.ViewportHeight / 2., scrollViewCurrentImage.ViewportWidth / 2., scrollViewCurrentImage.ViewportHeight / 2.)
+
+    scrollViewCurrentImage.Loaded.AddHandler(fun obj args -> adjustCurrentImageMargins ())
+    scrollViewCurrentImage.SizeChanged.AddHandler(fun obj args -> adjustCurrentImageMargins ())
+
+    let mutable currentScale = 1.
+    let mutable maxScale = 5.
+    let mutable minScale = 0.1
+    let currentImageScaleTransform = ScaleTransform()
+    borderCurrentImage.LayoutTransform <- currentImageScaleTransform
+    borderCurrentImage.PreviewMouseWheel.AddHandler(fun obj args ->
+        let scaleFactor = if args.Delta > 0 then 2.0 else 0.5
+        if scaleFactor > 1. && currentScale < maxScale || scaleFactor < 1. && currentScale > minScale
+        then
+            let previousScale = currentScale
+            currentScale <-
+                let newScale = currentScale * scaleFactor
+                if newScale > maxScale then maxScale elif newScale < minScale then minScale else newScale
+            let realScaleFactor = currentScale / previousScale
+
+            let centerX = scrollViewCurrentImage.HorizontalOffset + scrollViewCurrentImage.ViewportWidth / 2. - canvasCurrentImage.Margin.Left
+            let centerY = scrollViewCurrentImage.VerticalOffset + scrollViewCurrentImage.ViewportHeight / 2. - canvasCurrentImage.Margin.Top
+
+            canvasCurrentImage.Margin <- Thickness(canvasCurrentImage.Margin.Top * realScaleFactor)
+            currentImageScaleTransform.ScaleX <- currentScale
+            currentImageScaleTransform.ScaleY <- currentScale
+
+            scrollViewCurrentImage.ScrollToHorizontalOffset(centerX * realScaleFactor - scrollViewCurrentImage.ViewportWidth / 2. + canvasCurrentImage.Margin.Left)
+            scrollViewCurrentImage.ScrollToVerticalOffset(centerY * realScaleFactor - scrollViewCurrentImage.ViewportHeight / 2. + canvasCurrentImage.Margin.Top)
+        args.Handled <- true)
+
+    // Pan on the current image.
+    let mutable scrollStartPosition = Point(0., 0.)
+    let mutable scrollStartOffsetX = 0.
+    let mutable scrollStartOffsetY = 0.
+    borderCurrentImage.PreviewMouseLeftButtonDown.AddHandler(fun obj args ->
+        scrollStartPosition <- args.GetPosition(scrollViewCurrentImage)
+        scrollStartOffsetX <- scrollViewCurrentImage.HorizontalOffset
+        scrollStartOffsetY <- scrollViewCurrentImage.VerticalOffset
+        borderCurrentImage.Cursor <- Input.Cursors.ScrollAll
+        borderCurrentImage.CaptureMouse() |> ignore
+        args.Handled <- true)
+
+    borderCurrentImage.PreviewMouseMove.AddHandler(fun obj args ->
+        if borderCurrentImage.IsMouseCaptured
+        then
+            let position = args.GetPosition(scrollViewCurrentImage)
+            let deltaX = scrollStartPosition.X - position.X
+            let deltaY = scrollStartPosition.Y - position.Y
+            scrollViewCurrentImage.ScrollToHorizontalOffset(deltaX + scrollStartOffsetX)
+            scrollViewCurrentImage.ScrollToVerticalOffset(deltaY + scrollStartOffsetY)
+            args.Handled <- true)
+
+    borderCurrentImage.PreviewMouseLeftButtonUp.AddHandler(fun obj args ->
+        if borderCurrentImage.IsMouseCaptured
+        then
+            borderCurrentImage.Cursor <- Input.Cursors.Arrow
+            borderCurrentImage.ReleaseMouseCapture()
+            args.Handled <- true)
+
+
     (*let txtPatient: Controls.TextBox = ctrl "txtPatient"
     txtPatient.TextChanged.AddHandler(fun obj args ->
         state.PatientID <- txtPatient.Text)*)