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FrankLWC.fsx
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FrankLWC.fsx
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open System.Windows.Forms
open System.Drawing
open System.Drawing.Drawing2D
type TransformMatrixs() =
let mutable w2v = new Drawing2D.Matrix()
let mutable v2w = new Drawing2D.Matrix()
member this.NTranslate(tx, ty) =
w2v.Translate(tx, ty)
v2w.Translate(-tx, -ty, Drawing2D.MatrixOrder.Append)
member this.NRotate(a) =
w2v.Rotate(a)
v2w.Rotate(-a, Drawing2D.MatrixOrder.Append)
member this.NScale(sx, sy) =
w2v.Scale(sx, sy)
v2w.Scale(1.f/sx, 1.f/sy, Drawing2D.MatrixOrder.Append)
member this.XTranslate(tx, ty) =
w2v.Translate(tx, ty, Drawing2D.MatrixOrder.Append)
v2w.Translate(-tx, -ty)
member this.XRotate(a, p:PointF) =
w2v.RotateAt(a, p)
v2w.RotateAt(-a, p, MatrixOrder.Append)
member this.XScale(sx, sy, p:PointF) =
let xc, yc = p.X, p.Y
w2v.Translate(xc,yc)
v2w.Translate(-xc,-yc,MatrixOrder.Append)
w2v.Scale(sx, sy)
v2w.Scale(1.f/sx, 1.f/sy, Drawing2D.MatrixOrder.Append)
w2v.Translate(-xc,-yc)
v2w.Translate(xc,yc,MatrixOrder.Append)
member this.W2V with get() = w2v.Clone()
member this.V2W with get() = v2w.Clone()
type AbstractLWControl() =
let mutable location = PointF(0.f, 0.f)
let mutable matrixs = TransformMatrixs()
let mutable select = false
let mutable draggable = false
let mutable color = Color.LightGray
let mutable graphicspath = new GraphicsPath()
let mousedownevt = new Event<MouseEventArgs>()
let mousemoveevt = new Event<MouseEventArgs>()
let mouseupevt = new Event<MouseEventArgs>()
let keydownevt = new Event<KeyEventArgs>()
let keyupevt = new Event<KeyEventArgs>()
let keypressevt = new Event<KeyPressEventArgs>()
let resizeevt = new Event<System.EventArgs>()
let paintevt = new Event<PaintEventArgs>()
let invalidevt = new Event<obj>()
member this.BackColor
with get() = color
and set(v:Color) = color <- v
member this.Matrixs
with get() = matrixs
and set(v:TransformMatrixs) = matrixs <- v
member this.Region
with get() = new Region(graphicspath)
member this.GraphicsPath
with get() = graphicspath
and set(v:GraphicsPath) = graphicspath <- v
member this.Select
with get() = select
and set(v:bool) = select <- v
member this.Draggable
with get() = draggable
and set(v:bool) = draggable <- v
member this.Location
with get() = location
and set(v:PointF) = location <- v
abstract OnMouseDown : MouseEventArgs -> unit
abstract OnMouseUp : MouseEventArgs -> unit
abstract OnMouseMove : MouseEventArgs -> unit
abstract OnKeyDown : KeyEventArgs -> unit
abstract OnKeyUp : KeyEventArgs -> unit
abstract OnKeyPress : KeyPressEventArgs -> unit
abstract OnPaint : PaintEventArgs -> unit
abstract OnResize : System.EventArgs -> unit
abstract Invalidate : _ -> unit
member this.MouseDown = mousedownevt.Publish
member this.MouseMove = mousemoveevt.Publish
member this.MouseUp = mouseupevt.Publish
member this.KeyDown = keydownevt.Publish
member this.KeyUp = keyupevt.Publish
member this.KeyPress = keypressevt.Publish
member this.Resize = resizeevt.Publish
member this.Paint = paintevt.Publish
member this.Invalidated = invalidevt.Publish
default this.OnMouseDown e = mousedownevt.Trigger(e)
default this.OnMouseUp e = mouseupevt.Trigger(e)
default this.OnMouseMove e = mousemoveevt.Trigger(e)
default this.OnKeyDown e = keydownevt.Trigger(e)
default this.OnKeyUp e = keyupevt.Trigger(e)
default this.OnKeyPress e = keypressevt.Trigger(e)
default this.OnPaint e = paintevt.Trigger(e)
default this.OnResize e = resizeevt.Trigger(e)
default this.Invalidate _ = invalidevt.Trigger()
type LWArray(lwcontrols : ResizeArray<AbstractLWControl>) =
let addevt = new Event<AbstractLWControl>()
member this.AddE = addevt.Publish
member this.Add (x:AbstractLWControl) =
lwcontrols.Add(x)
addevt.Trigger(x)
member this.Count = lwcontrols.Count
//TODO: aggiungere altri member utili
type LWControl() as this =
inherit AbstractLWControl()
//let mutable parent : LWContainer = Unchecked.defaultof<LWContainer> // non più necessario, lo tengo per ricordo
let mutable dragstate = None
let lwcontrols = ResizeArray<AbstractLWControl>() //ogni LWC è container a sua volta
let publicarray = LWArray(lwcontrols)
let hitTest (p:PointF) (r:Region) =
r.IsVisible(p)
let transformPoint (m:Drawing2D.Matrix) (p:PointF) =
let pts = [| p |]
m.TransformPoints(pts)
pts.[0]
do
publicarray.AddE.Add(fun c -> c.Invalidated.Add(fun _ -> this.Invalidate()))
member this.LWControls with get() = publicarray
override this.OnMouseDown e =
this.Select <- true
for idx in 0 .. (lwcontrols.Count - 1) do
let c = lwcontrols.[idx]
c.Select <- false
let p = PointF(single e.X, single e.Y)
match (lwcontrols |> Seq.tryFind (fun c ->
let mutable pp = PointF(p.X-c.Location.X,p.Y-c.Location.Y)
let r = c.Region
r.Transform(c.Matrixs.W2V)
hitTest pp r
)) with
| Some c ->
let mutable pp = PointF(p.X-c.Location.X,p.Y-c.Location.Y)
pp <- transformPoint c.Matrixs.V2W pp
let ee = MouseEventArgs(MouseButtons.Left,1, int pp.X, int pp.Y,0)
c.OnMouseDown(ee)
| None ->
if this.Draggable then
dragstate <- Some(p)
base.OnMouseDown(e)
override this.OnMouseMove e =
let p = PointF(single e.X, single e.Y)
match (lwcontrols |> Seq.tryFind (fun c ->
let mutable pp = PointF(p.X-c.Location.X,p.Y-c.Location.Y)
let r = c.Region
r.Transform(c.Matrixs.W2V)
hitTest pp r
)) with
| Some c ->
let mutable pp = PointF(p.X-c.Location.X,p.Y-c.Location.Y)
pp <- transformPoint c.Matrixs.V2W pp
let ee = MouseEventArgs(MouseButtons.None,1, int pp.X, int pp.Y,0)
c.OnMouseMove(ee)
| None ->
match dragstate with
| Some c ->
let dx, dy = (p.X - c.X), (p.Y - c.Y)
this.Matrixs.NTranslate(dx,dy)
this.Invalidate()
| None -> ()
base.OnMouseMove(e)
override this.OnMouseUp e =
let p = PointF(single e.X, single e.Y)
for idx in 0 .. (lwcontrols.Count - 1) do
let c = lwcontrols.[idx]
c.OnMouseUp(e)
dragstate <- None
base.OnMouseUp(e)
override this.OnKeyDown e =
match (lwcontrols |> Seq.tryFind (fun c -> c.Select)) with
| Some c -> c.OnKeyDown(e)
| None -> ()
base.OnKeyDown(e)
override this.OnKeyUp e =
match (lwcontrols |> Seq.tryFind (fun c -> c.Select)) with
| Some c -> c.OnKeyUp(e)
| None -> ()
base.OnKeyUp(e)
override this.OnKeyPress e =
match (lwcontrols |> Seq.tryFind (fun c -> c.Select)) with
| Some c -> c.OnKeyPress(e)
| None -> ()
base.OnKeyPress(e)
override this.OnPaint e =
let g = e.Graphics
let br = new SolidBrush(this.BackColor)
g.FillRegion(br, this.Region)
base.OnPaint(e)
let auxm = g.Transform.Clone()
let clip = g.Clip.Clone()
for idx in (lwcontrols.Count - 1) .. -1 .. 0 do
let c = lwcontrols.[idx]
let m = g.Transform
m.Translate(c.Location.X,c.Location.Y)
m.Multiply(c.Matrixs.W2V)
g.Transform <- m
g.SetClip(c.Region, CombineMode.Intersect)
c.OnPaint e
g.Transform <- auxm
g.SetClip(clip,CombineMode.Replace)
done
override this.OnResize e =
for idx in 0 .. (lwcontrols.Count - 1) do
let c = lwcontrols.[idx]
c.OnResize(e)
base.OnResize(e)
override this.Invalidate _ = base.Invalidate()
and LWContainer() as this =
inherit UserControl()
let lwcontrols = ResizeArray<AbstractLWControl>()
let publicarray = LWArray(lwcontrols)
let hitTest (p:PointF) (r:Region) =
r.IsVisible(p)
let transformPoint (m:Drawing2D.Matrix) (p:PointF) =
let pts = [| p |]
m.TransformPoints(pts)
pts.[0]
do
this.SetStyle(ControlStyles.DoubleBuffer, true)
this.SetStyle(ControlStyles.AllPaintingInWmPaint, true)
publicarray.AddE.Add(fun c -> c.Invalidated.Add(fun _ -> this.Invalidate()))
member this.LWControls with get() = publicarray
override this.OnResize e =
for idx in 0 .. (lwcontrols.Count - 1) do
let c = lwcontrols.[idx]
c.OnResize(e)
override this.OnKeyDown e =
match (lwcontrols |> Seq.tryFind (fun c -> c.Select)) with
| Some c -> c.OnKeyDown(e)
| None -> ()
override this.OnKeyUp e =
match (lwcontrols |> Seq.tryFind (fun c -> c.Select)) with
| Some c -> c.OnKeyUp(e)
| None -> ()
override this.OnKeyPress e =
match (lwcontrols |> Seq.tryFind (fun c -> c.Select)) with
| Some c -> c.OnKeyPress(e)
| None -> ()
override this.OnMouseDown e =
for idx in 0 .. (lwcontrols.Count - 1) do
let c = lwcontrols.[idx]
c.Select <- false
let p = PointF(single e.X, single e.Y)
match (lwcontrols |> Seq.tryFind (fun c ->
let pp = PointF(p.X-c.Location.X,p.Y-c.Location.Y)
let r = c.Region
r.Transform(c.Matrixs.W2V)
hitTest pp r
)) with
| Some c ->
let mutable pp = PointF(p.X-c.Location.X,p.Y-c.Location.Y)
pp <- transformPoint c.Matrixs.V2W pp
let ee = MouseEventArgs(MouseButtons.Left,1, int pp.X, int pp.Y,0)
c.OnMouseDown(ee)
| None -> ()
override this.OnMouseUp e =
let p = PointF(single e.X, single e.Y)
for idx in 0 .. (lwcontrols.Count - 1) do
let c = lwcontrols.[idx]
c.OnMouseUp(e)
override this.OnMouseMove e =
let p = PointF(single e.X, single e.Y)
match (lwcontrols |> Seq.tryFind (fun c ->
let mutable pp = PointF(p.X-c.Location.X,p.Y-c.Location.Y)
let r = c.Region
r.Transform(c.Matrixs.W2V)
hitTest pp r
)) with
| Some c ->
let mutable pp = PointF(p.X-c.Location.X,p.Y-c.Location.Y)
pp <- transformPoint c.Matrixs.V2W pp
let ee = MouseEventArgs(MouseButtons.None,1, int pp.X, int pp.Y,0)
c.OnMouseMove(ee)
| None -> ()
override this.OnPaint e =
let g = e.Graphics
g.SmoothingMode <- System.Drawing.Drawing2D.SmoothingMode.AntiAlias
let auxm = g.Transform
for idx in (lwcontrols.Count - 1) .. -1 .. 0 do
let c = lwcontrols.[idx]
let m = g.Transform
m.Translate(c.Location.X,c.Location.Y)
m.Multiply(c.Matrixs.W2V)
g.Transform <- m
g.SetClip(c.Region, CombineMode.Replace)
c.OnPaint e
g.Transform <- auxm
g.ResetClip()
done