GdiplusX effects & operations on images

these 7 codes makes some effects on images with gdiplusX.
1-halo around images folder
2-shadow around images folder
3. extract a roundRectangle on images folder
4.extract a RoundRectangle with shadow on images folder
5.extract thumbnails with any dimensions from an images folder
6.extract a roundRectangle with solid contour from an images folder

and the ymain.prg

Save each code as pointed prg and run the ymain.prg
the code contains 7 prgs.the main prg is a form an can fires any of the 6 others.
any of the 6 last prg's can run as standalone.
must point to system.app and gdiplusX class or better put them in the source folder.
output images are created in thumbnails folder (created in the source if not exists).
You can see some technics to work with imgcanvas class.It can work as standalone (without a form plateform) as object exactly as image with this code with image class

local oImg
oImg=createObject("image")
oImg.picture=getpict()
messagebox("width="+trans(oImg.width)+" Height=" +trans(oImg.height))
oimg=null
release oimg
see some screenshots generated by the application below.

NB:if you have any problem with gdiplmusX object,isuue "clea all" before running code.
 

This page was last updated on : mardi 17 février 2015; 18:28:47

*-1-ymain.prg

*Begin code
Clea All
Do Locfile("system.app")

Publi m.yrep0
m.yrep0=Addbs(Justpath(Sys(16,1)))
Set Defa To (yrep0)

Publi yform
yform=Newobject("yglobal")
yform.Show
Read Events
Retu
*
Define Class yglobal As Form
    BorderStyle = 2
    Height = 257
    Width = 329
    ShowWindow = 2
    AutoCenter = .T.
    BackColor=Rgb(255,255,213)
    Caption = ""
    MaxButton = .F.
    Name = "form1"

    Add Object command1 As CommandButton With ;
        Top = 37, ;
        Left = 24, ;
        Height = 27, ;
        Width = 288, ;
        Caption = "Halo on images", ;
        Name = "Command1"

    Add Object command2 As CommandButton With ;
        Top = 73, ;
        Left = 24, ;
        Height = 27, ;
        Width = 288, ;
        Caption = "Shadow on image", ;
        Name = "Command2"

    Add Object command3 As CommandButton With ;
        Top = 109, ;
        Left = 24, ;
        Height = 27, ;
        Width = 288, ;
        Caption = "Region XOR RoundRectangle on  images", ;
        Name = "Command3"

    Add Object command4 As CommandButton With ;
        Top = 145, ;
        Left = 24, ;
        Height = 27, ;
        Width = 288, ;
        Caption = "Region_xor_roundrect_contour on images", ;
        Name = "Command4"

    Add Object command5 As CommandButton With ;
        Top = 181, ;
        Left = 24, ;
        Height = 27, ;
        Width = 288, ;
        Caption = "Region_xor_roundrect_shadow.prg on images", ;
        Name = "Command5"

    Add Object command6 As CommandButton With ;
        Top = 217, ;
        Left = 24, ;
        Height = 26, ;
        Width = 288, ;
        Caption = "Vignette of images", ;
        Name = "Command6"

    Add Object label1 As Label With ;
        AutoSize = .T., ;
        FontBold = .T., ;
        FontSize = 24, ;
        BackStyle = 0, ;
        Caption = "  Effects on images", ;
        Height = 54, ;
        Left = 0, ;
        Top = 0, ;
        Width = 300, ;
        ForeColor = Rgb(68,68,68), ;
        Name = "Label1"

    Add Object label2 As Label With ;
        AutoSize = .T., ;
        FontBold = .T., ;
        FontSize = 24, ;
        BackStyle = 0, ;
        Caption = "  Effects on images", ;
        Height = 54, ;
        Left = 4, ;
        Top = 2, ;
        Width = 300, ;
        ForeColor = Rgb(255,128,0), ;
        Name = "Label2"

    Procedure Init
        Thisform.SetAll("mousepointer",15,"commandbutton")

    Procedure Destroy
        Set Defa To (yrep0)
        Clea Events
    Endproc

    Procedure command1.Click
        Do yhalo
    Endproc

    Procedure command2.Click
        Do yombreportee
    Endproc

    Procedure command3.Click
        Do yregion_xor_roundrect
    Endproc

    Procedure command4.Click
        Do yregion_xor_roundrect_contour
    Endproc

    Procedure command5.Click
        Do yregion_xor_roundrect_shadow
    Endproc

    Procedure command6.Click
        Do yvignette
    Endproc

Enddefine
*
*end code

---

*-2-yhalo.prg

*Begin Code

If !Vartype(m.yrep0)="C"

  clea all
    m.yrep0=Addbs(Justpath(Sys(16,1)))
Endi

Declare Integer Sleep In kernel32 Integer
Do  Locfile("system.app")
Messagebox("This code makes the jpg images pointed folder with black halo around each image.",0+32,"",1200)

set classlib to

Set Classlib To Locfile["GDIPLUSX.VCX";
,"vcx"]  Additive

If Directory(yrep0+"thumbnails")
    Set Safe Off
    zz=yrep0+"thumbnails\*.*"
    Dele File (zz)
    Set Safe On
Else
    Md (yrep0+"thumbnails")
Endi

Local m.yrep
m.yrep=Addbs(Getdir())
Set Defa To (yrep)
gnbre=Adir(gabase,"*.jpg")  &&png,bmp,gif...
If gnbre=0
    Messagebox(m.yrep+  " dont contains jpg images !",0+16+4096,"Error",1000)
    Return .F.
Endi

with _Screen

.AddObject("ocanvas1","ocanvas")
.AddProperty("ypicture","")

    For i=1 To gnbre
        .ypicture=gabase(i,1)
        .ocanvas1.Draw()
        Sleep(10)
    Endfor
Endwith

Try
    _Screen.ocanvas1=Null
    release_screen. ocanvas1
    Release Classlib "gdiplusX"
Catch
    Set Classlib To
Endtry

aa=(yrep0+"thumbnails\")
Run/N explorer &aa   &&show images with effects
Set Defa To (yrep0)
Return

*create the class
Define Class oCanvas As imgcanvas
    Anchor = 15
    Stretch = 2
    Height = 511
    Left = 9
    Top = 5
    Width = 783
    smoothingmode = 0
    drawWhenInvisible=.T.
    Visible=.F.
    Name = "ocanvas"

    Procedure beforedraw
        This.Picture=_Screen.ypicture  
        This.Stretch=2
        This.smoothingmode=0
        This.interpolationMode=7
        With _Screen.System.Drawing

            Local xcolor0,xcolor

            xcolor0=.Color.white
            xcolor1=.Color.black
            Local x1,x2,x3,x4,x5
            x1=30
            x2=30
            x5=15
            &&thumbnail dimensions
            Local lnWidth,lnHeight
            obmp=.Bitmap.new(_Screen.ypicture)
            lnWidth=obmp.Width      &&here 160  to custom
            lnHeight=obmp.Height    &&here 120  to custom

            Local loFont As xfcFont
            This.Clear()
            * Create a bitmap in a fixed ratio to the original drawing area.
            This.oGfx.Clear(xcolor0 )

            Local loBmp As xfcBitmap
            Local x
            x=x5
            loBmp = .Bitmap.new(This.Width / x, This.Height / x)

            * Create a GraphicsPath object.
            Local loPath As xfcGraphicsPath
            loPath = .Drawing2D.GraphicsPath.new()
            rec0=.rectangle.new(x1,x2,This.Width-2*x1,This.Height-2*x2)
            loPath.addRectangle(rec0)
            * Get the graphics object for the image.
            Local loGfx As xfcGraphics
            loGfx = .Graphics.FromImage(loBmp)
            *    loGfx.clear(.color.fromRgb(thisform.container1.yback.backcolor) )      &&white
            * Create a matrix that shrinks the drawing output by the fixed ratio.
            Local loMatrix As xfcMatrix
            loMatrix = .Drawing2D.Matrix.new(1/x, 0, 0, 1/x, -1/x, -1/x)

            * Choose an appropriate smoothing mode for the halo.
            loGfx.smoothingmode = .Drawing2D.smoothingmode.AntiAlias

            * Transform the graphics object so that the same half may be used for both halo and text output.
            loGfx.Transform = loMatrix

            * Using a suitable pen...
            Local loPen As xfcPen
            loPen = .Pen.new(xcolor1)

            * Draw around the outline of the path
            loGfx.DrawPath(loPen, loPath)

            * and then fill in for good measure.
            loGfx.FillPath( .SolidBrush.new(xcolor1), loPath)

            * setup the smoothing mode for path drawing
            This.oGfx.smoothingmode = .Drawing2D.smoothingmode.AntiAlias

            * and the interpolation mode for the expansion of the halo bitmap
            This.oGfx.interpolationMode = .Drawing2D.interpolationMode.HighQualityBicubic

            * expand the halo making the edges nice and fuzzy.
            This.oGfx.DrawImage(loBmp, This.rectangle, 0, 0,loBmp.Width, loBmp.Height, .GraphicsUnit.Pixel)

            * Redraw the original
            This.oGfx.FillPath(.SolidBrush.new(xcolor1), loPath)

            w=rec0.Width
            h=rec0.Height
            orec=.rectangle.new(x1,x2,This.Width-2*x1,This.Height-2*x1)        &&w,h
            * Get the graphics object for the image.
            This.oGfx.DrawImage(.Bitmap.fromfile(This.Picture),orec)

            * Get the resized version of the image
            Local loResized As xfcBitmap
            loResized = .Bitmap.new(This.obmp, lnWidth, lnHeight)

            * Save the resized image as Png
            Do Case
                Case i<=9
                    ii="000"+Trans(i)
                Case i>9 And i<=99
                    ii="00"+Trans(i)
                Case i>99 And i<=999
                    ii="0"+Trans(i)
                Otherwise
                    ii=Trans(i)
            Endcase
            loResized.Save(yrep0+ ;
"thumbnails\"+Allt(_Screen.ypicture),.Imaging.ImageFormat.JPEG)
            Wait Window("Image: "+Allt(_Screen.ypicture)+"....... "+Trans(i)+"/"+Trans(gnbre)) At Srows()/6,Scols()/6 Nowait
        Endwith
        Return
    Endproc
Enddefine

*
*Endcode

---

*-3-yregion_xor_roundrect.prg

*Begin code

If !Vartype(m.yrep0)="C"
    m.yrep0=Addbs(Justpath(Sys(16,1)))
Endi

Declare Integer Sleep In kernel32 Integer
Do  Locfile("system.app")

Messagebox("This code converts  an images folder to Round Rectangle jpg images in   thumbnail  directory ", 0+32+4096,"",1000)

set classlib to
Set Classlib To Locfile["GDIPLUSX.VCX";
,"vcx"]  Additive

If Directory(m.yrep0+"thumbnails")
    Set Safe Off
    zz=m.yrep0+"thumbnails\*.*"
    Dele File (zz)
    Set Safe On
Else
    Md (m.yrep0+"thumbnails")
Endi

Local m.yrep,gnbre
m.yrep=Addbs(Getdir())
Set Defa To (yrep)
gnbre=Adir(gabase,"*.jpg")
If gnbre=0
    Messagebox(m.yrep+  " have no images jpg  !",0+16+4096,"error",1000)
    Return
Endi

Local m.xcolor
m.xcolor=_Screen.System.Drawing.Color.gold    && contour color
If Messagebox("Change contour color (gold)?",4+32,"")=6
    Local m.xcol
    m.xcol=Getcolor()
    If m.xcol#-1
        m.xcolor=_Screen.System.Drawing.Color.fromRGB(m.xcol)    && contour color
    Endi
Endi

Local m.ypicture
For i=1 To gnbre
    m.ypicture=gabase(i,1)

    With _Screen.System.Drawing
        * Get an image file
        Local loBmp As xfcBitmap
        loBmp = .Bitmap.FromFile(m.ypicture)
        * Create a Gfx object that will allow us to make the transformation
        Local loGfx As xfcGraphics
        loGfx = .Graphics.FromImage(loBmp)
        Local lnWidth, lnHeight
        lnWidth = loBmp.Width
        lnHeight = loBmp.Height

        * Create GraphicsPath object.
        Local loClipPath As xfcGraphicsPath
        loClipPath = .Drawing2D.GraphicsPath.New()

        * LPARAMETERS rc,r
        Local x,Y,xwidth,xheight,xpath
        x=loBmp.Width/10
        Y=loBmp.Height/10
        xwidth=loBmp.Width-2*x
        xheight=loBmp.Height-2*Y
        r=loBmp.Width/5

        loGfx.SmoothingMode = .Drawing2D.SmoothingMode.AntiAlias
        rc = .Rectangle.New(x,Y,xwidth, xheight)

        Local g As Graphics
        Local p As Pen
        x = rc.x
        Y = rc.Y
        xwidth   = rc.Width
        xheight = rc.Height
        With _Screen.System.Drawing
            xpath = .Drawing2D.GraphicsPath.New()
            xpath.AddArc(x, Y, r, r, 180, 90)                        && Upper left corner
            xpath.AddArc(x+xwidth - r, Y, r, r, 270, 90)            && Upper right corner
            xpath.AddArc(x+xwidth - r, Y+xheight - r, r, r, 0, 90)    && Lower right corner
            xpath.AddArc(x, Y+xheight - r, r, r, 90, 90)             &&Lower left corner
            xpath.CloseFigure()
        Endwith

        * An Ellipse shape
        loClipPath.AddPath(xpath)             &&addEllipse(0, 0, lnWidth, lnHeight)

        * Set clipping region to path.
        * CombineMode enumeration
        * http://msdn.microsoft.com/en-us/library/system.drawing.drawing2d.combinemode.aspx
        * CombineMode.Xor - Two clipping regions are combined by taking only the areas
        * enclosed by one or the other region, but not both.
        loGfx.SetClip(loClipPath,_Screen.System.Drawing.Drawing2D.CombineMode.Xor)
        * Fill rectangle to demonstrate clipping region.
        loGfx.FillRectangle( .Brushes.white, 0, 0, loBmp.Width, loBmp.Height)
        * Save the image to the disk and show

        Pen=.Pen.New(xcolor,12)
        loGfx.drawPath(Pen,xpath)
        Pen.dispose()
        * Get the resized version of the image
        Local loResized As xfcBitmap
        &&thumb dimensions
        *local lnWidth,lnHeight
        obmp=.Bitmap.New(ypicture)
        lnWidth=obmp.Width
        lnHeight=obmp.Height

        loResized = .Bitmap.New(loBmp, lnWidth, lnHeight)
     loResized.Save(yrep0+ ;
"thumbnails\"+Allt(_Screen.ypicture),.Imaging.ImageFormat.JPEG)

        Wait Window("Image "+m.ypicture+"....... "+Trans(i)+"/"+Trans(gnbre)) At Srows()/6,Scols()/6 Nowait
    Endwith
Endfor

aa=(m.yrep0+"thumbnails\")
Run/N explorer &aa
Set Defa To (yrep0)
Return

*End code

---

*-4-yregion_xor_contour.prg

*Begin code
If !Vartype(m.yrep0)="C"
    Clea All
    m.yrep0=Addbs(Justpath(Sys(16,1)))
Endi

Declare Integer Sleep In kernel32 Integer
Do  Locfile("system.app")

Messagebox("Ce programme transforme les images jpg d'un répertoire en images Round Rectangle avec contour couleur(à Choisir-xcolor).Pour travailler sur les vignettes changer les dimensions ....",0+32,"",1000)

Set Classlib To Locfile("GDIPLUSX.VCX";
,"vcx")  Additive  &&&

If !Vartype(m.yrep0)="C"
    m.yrep0=Addbs(Justpath(Sys(16,1)))
Endi

If Directory(yrep0+"thumbnails")
    Set Safe Off
    zz=yrep0+"thumbnails\*.*"

    Dele File (zz)
    Set Safe On
Else
    Md (yrep0+"thumbnails")
Endi
Local m.yrep
m.yrep=Addbs(Getdir())
Set Defa To (yrep)
gnbre=Adir(gabase,"*.jpg")
If gnbre=0
    Messagebox(m.yrep+  " est vide !",0+16)
    Return
Endi

xcolor=_Screen.System.Drawing.Color.blue       &&gold    &&couleur contour
If Messagebox("Changer la couleur du contour (blue)?",4+32,"")=6
    xcol=Getcolor()
    If xcol#-1
        xcolor=_Screen.System.Drawing.Color.fromRGB(xcol)    &&couleur contour
    Endi
Endi


Local m.ypicture
For i=1 To gnbre
    m.ypicture=gabase(i,1)

    With _Screen.System.Drawing
        * Get an image file
        Local loBmp As xfcBitmap
        loBmp = .Bitmap.FromFile(ypicture)
        * Create a Gfx object that will allow us to make the transformation
        Local loGfx As xfcGraphics
        loGfx = .Graphics.FromImage(loBmp)
        Local lnWidth, lnHeight
        lnWidth = loBmp.Width
        lnHeight = loBmp.Height

        * Create GraphicsPath object.
        Local loClipPath As xfcGraphicsPath
        loClipPath = .Drawing2D.GraphicsPath.New()

        * LPARAMETERS rc,r
        Local x,Y,xwidth,xheight,xpath
        x=loBmp.Width/10
        Y=loBmp.Height/10
        xwidth=loBmp.Width-2*x
        xheight=loBmp.Height-2*Y
        r=loBmp.Width/5

        loGfx.SmoothingMode = .Drawing2D.SmoothingMode.AntiAlias
        rc = .Rectangle.New(x,Y,xwidth, xheight)

        Local g As Graphics
        Local p As Pen
        x = rc.x
        Y = rc.Y
        xwidth   = rc.Width
        xheight = rc.Height
        With _Screen.System.Drawing
            xpath = .Drawing2D.GraphicsPath.New()
            xpath.AddArc(x, Y, r, r, 180, 90)                        && Upper left corner
            xpath.AddArc(x+xwidth - r, Y, r, r, 270, 90)            && Upper right corner
            xpath.AddArc(x+xwidth - r, Y+xheight - r, r, r, 0, 90)    && Lower right corner
            xpath.AddArc(x, Y+xheight - r, r, r, 90, 90)             &&Lower left corner
            xpath.CloseFigure()
        Endwith


        * An Ellipse shape
        loClipPath.AddPath(xpath)             &&addEllipse(0, 0, lnWidth, lnHeight)

        * Set clipping region to path.
        * CombineMode enumeration
        * http://msdn.microsoft.com/en-us/library/system.drawing.drawing2d.combinemode.aspx
        * CombineMode.Xor - Two clipping regions are combined by taking only the areas
        * enclosed by one or the other region, but not both.
        loGfx.SetClip(loClipPath,_Screen.System.Drawing.Drawing2D.CombineMode.Xor)
        * Fill rectangle to demonstrate clipping region.
        loGfx.FillRectangle( .Brushes.white, 0, 0, loBmp.Width, loBmp.Height)
        * Save the image to the disk and show

        &&contour
        Pen=.Pen.New(xcolor,50)
        loGfx.drawPath(Pen,xpath)
        Pen.dispose()
        * Get the resized version of the image
        Local loResized As xfcBitmap

        *dimensions vignettes
        *local lnWidth,lnHeight
        obmp=.Bitmap.New(ypicture)
        lnWidth=obmp.Width
        lnHeight=obmp.Height

        loResized = .Bitmap.New(loBmp, lnWidth, lnHeight)

        loResized.Save(yrep0+ ;
            "thumbnails\"+Allt(m.ypicture), .Imaging.ImageFormat.JPEG)
        Wait Window("Image "+m.ypicture+"....... "+Trans(i)+"/"+Trans(gnbre)) At Srows()/6,Scols()/6 Nowait
    Endwith
Endfor

aa=(yrep0+"thumbnails\")
Run/N explorer &aa
Set Defa To (yrep0)
Return
*Endcode

---

*-5-yregion_xor_roundrect_shadow.prg

*Begin code

If !Vartype(m.yrep0)="C"
    Clea All
    m.yrep0=Addbs(Justpath(Sys(16,1)))
Endi

Declare Integer Sleep In kernel32 Integer
Do  Locfile("system.app")
Messagebox("this code convert an images folder to shadowed images roundrectangle ....",0+32,"",1000)
Set Classlib To

Set Classlib To Locfile["GDIPLUSX.VCX";
,"vcx"]  Additive

If Directory(m.yrep0+"thumbnails")
    Set Safe Off
    zz=m.yrep0+"thumbnails\*.*"
    Dele File (m.zz)
    Set Safe On
Else
    Md (m.yrep0+"thumbnails")
Endi

Local m.yrep,gnbre
m.yrep=Addbs(Getdir())
Set Defa To (yrep)
gnbre=Adir(gabase,"*.jpg")
If gnbre=0
    Messagebox(m.yrep+  " is empty of images jpg !",0+16+4096,"error",1000)
    Return .F.
Endi

Local m.xcolor
m.xcolor=_Screen.System.Drawing.Color.gold    &&contour color
If Messagebox("Change color of  contour (gold)?",4+32,"")=6
    m.xcol=Getcolor()
    If m.xcol#-1
        m.xcolor=_Screen.System.Drawing.Color.fromRGB(m.xcol)    &&contour color
    Endi
Endi

Local m.ypicture
For i=1 To gnbre
    m.ypicture=gabase(i,1)

    With _Screen.System.Drawing
        * Get an image file
        Local loBmp As xfcBitmap
        loBmp = .Bitmap.FromFile(ypicture)
        * Create a Gfx object that will allow us to make the transformation
        Local loGfx As xfcGraphics
        loGfx = .Graphics.FromImage(loBmp)
        Local lnWidth, lnHeight
        lnWidth = loBmp.Width
        lnHeight = loBmp.Height

        * Create GraphicsPath object.
        Local loClipPath As xfcGraphicsPath
        loClipPath = .Drawing2D.GraphicsPath.New()
        Local loShpath As xfcGraphicsPath
        loShpPath = .Drawing2D.GraphicsPath.New()

        * LPARAMETERS rc,r
        Local x,Y,xwidth,xheight,xpath
        x=loBmp.Width/10
        Y=loBmp.Height/10
        xwidth=loBmp.Width-2*x
        xheight=loBmp.Height-2*Y
        r=loBmp.Width/5

        loGfx.SmoothingMode = .Drawing2D.SmoothingMode.AntiAlias
        rc = .Rectangle.New(x,Y,xwidth, xheight)

        Local g As Graphics
        Local p As Pen
        x = rc.x
        Y = rc.Y
        xwidth   = rc.Width
        xheight = rc.Height
        With _Screen.System.Drawing
            xpath = .Drawing2D.GraphicsPath.New()
            xpath.AddArc(x, Y, r, r, 180, 90)                        && Upper left corner
            xpath.AddArc(x+xwidth - r, Y, r, r, 270, 90)            && Upper right corner
            xpath.AddArc(x+xwidth - r, Y+xheight - r, r, r, 0, 90)    && Lower right corner
            xpath.AddArc(x, Y+xheight - r, r, r, 90, 90)             &&Lower left corner
            xpath.CloseFigure()
        Endwith

        * An Ellipse shape
        loClipPath.AddPath(xpath)             &&addEllipse(0, 0, lnWidth, lnHeight)

        * Set clipping region to path.
        * CombineMode enumeration
        * http://msdn.microsoft.com/en-us/library/system.drawing.drawing2d.combinemode.aspx
        * CombineMode.Xor - Two clipping regions are combined by taking only the areas
        * enclosed by one or the other region, but not both.
        loGfx.SetClip(loClipPath,_Screen.System.Drawing.Drawing2D.CombineMode.Xor)
        * Fill rectangle to demonstrate clipping region.
        loGfx.FillRectangle( .Brushes.white, 0, 0, loBmp.Width, loBmp.Height)

        &&draw contour
        Pen=.Pen.New(xcolor,12)
        loGfx.drawPath(Pen,xpath)
        Pen.dispose()

        *roundrectangle shadow
        Local g As Graphics
        Local p As Pen
        Local delta
        delta=20
        x = rc.x+delta
        Y = rc.Y+delta
        xwidth   = rc.Width
        xheight = rc.Height
        With _Screen.System.Drawing
            ypath = .Drawing2D.GraphicsPath.New()
            ypath.AddArc(x, Y, r, r, 180, 90)                        && Upper left corner
            ypath.AddArc(x+xwidth - r, Y, r, r, 270, 90)            && Upper right corner
            ypath.AddArc(x+xwidth - r, Y+xheight - r, r, r, 0, 90)    && Lower right corner
            ypath.AddArc(x, Y+xheight - r, r, r, 90, 90)             &&Lower left corner
            ypath.CloseFigure()
        Endwith

        br = .SolidBrush.New(.Color.black)
        loGfx.fillpath(br,ypath)
        br.dispose()

        * Get the resized version of the image
        Local loResized As xfcBitmap
        Local lnWidthv,lnHeightv         && thumb dimensions

        &&thumb dimensions
        *local lnWidth,lnHeight
        obmp=.Bitmap.New(ypicture)
        lnWidthv=obmp.Width
        lnHeightv=obmp.Height

        loResized = .Bitmap.New(loBmp, lnWidthv, lnHeightv)

          loResized.Save(yrep0+ ;
"thumbnails\"+Allt (m.ypicture),.Imaging.ImageFormat.JPEG)

        Wait Window("Image :"+m.ypicture+"....... "+Trans(i)+"/"+Trans(gnbre)) At Srows()/6,Scols()/6 Nowait
    Endwith
Endfor

Local m.aa
m.aa=(m.yrep0+"thumbnails\")
Run/N explorer &aa
Set Defa To (yrep0)
Return
*Endcode

---

*-6-yombreportee.prg

*Begin Code
Declare Integer Sleep In kernel32 Integer
Do  Locfile("system.app")
If !Vartype(m.yrep0)="C"
    m.yrep0=Addbs(Justpath(Sys(16,1)))
Endi

Messagebox("this code convert  an images folder  to shadowed .",0+32+4096,"",1000)
set classlib to
Set Classlib To Locfile("gdiplusX")  Additive

If Directory(yrep0+"thumbnails")
    Set Safe Off
    Local m.zz
    m.zz=yrep0+"thumbnails\*.*"
    Dele File (m.zz)
    Set Safe On
Else
    Md (m.yrep0+"thumbnails")
Endi

Local m.yrep
m.yrep=Addbs(Getdir())
Set Defa To (yrep)
gnbre=Adir(gabase,"*.jpg")  &&png,bmp,gif...
If gnbre=0
    Messagebox(m.yrep+  " dont contains jpg images !",0+16+4096,"Error",1000)
    Return .F.
Endi

If Vartype(_Screen.ocanvas1)="O"
    _Screen.ocanvas1=Null
    Release _Screen.ocanvas1
Endi

With _Screen
    .AddObject("ocanvas1","ocanvas")
    .AddProperty("ypicture","")

    For i=1 To gnbre
        .ypicture=gabase(i,1)
        .ocanvas1.Draw()
        Sleep(10)
    Endfor
Endwith

Try
    _Screen.ocanvas1=Null
    Release _Screen. ocanvas1
    Release Classlib "gdiplusX"
Catch
    Set Classlib To
Endtry

aa=(yrep0+"thumbnails\")
Run/N explorer &aa   &&show images with effects
Set Defa To (yrep0)
Return

*create the class
Define Class oCanvas As imgcanvas
    Anchor = 15
    Stretch = 2
    Height = 511
    Left = 9
    Top = 5
    Width = 783
    smoothingmode = 0
    drawWhenInvisible=.T.
    Visible=.F.
    Name = "ocanvas"

    Procedure beforedraw

        This.Picture=_Screen.ypicture
        This.Stretch=2
        This.smoothingmode=0
        This.interpolationMode=7
        With _Screen.System.Drawing
            Local xcolor0,xcolor
            xcolor0=.Color.white
            xcolor1=.Color.black
            Local x1,x2,x3,x4,x5
            x1=15
            x2=15
            x3=5
            x4=5
            x5=5

            &&thumb dimensions
            *local lnWidth,lnHeight
            *lnWidth=160
            *lnHeight=120

            &&dimensions vignettes
            *local lnWidth,lnHeight
            obmp=.Bitmap.new(_Screen.ypicture)
            lnWidth=obmp.Width      &&160
            lnHeight=obmp.Height  &&120

            Local loFont As xfcFont

            This.Clear()
            * Create a bitmap in a fixed ratio to the original drawing area.
            This.oGfx.Clear(xcolor0 )

            Local loBmp As xfcBitmap
            Local x
            x=x5
            loBmp = .Bitmap.new(This.Width / x, This.Height / x)

            * Create a GraphicsPath object.
            Local loPath As xfcGraphicsPath
            loPath = .Drawing2D.GraphicsPath.new()
            rec0=.rectangle.new(x1,x2,This.Width-2*x1,This.Height-2*x2)
            loPath.addRectangle(rec0)
            * Get the graphics object for the image.
            Local loGfx As xfcGraphics
            loGfx = .Graphics.FromImage(loBmp)
          
            * Create a matrix that shrinks the drawing output by the fixed ratio.
            Local loMatrix As xfcMatrix
            loMatrix = .Drawing2D.Matrix.new(1/x, 0, 0, 1/x, -1/x, -1/x)

            * Choose an appropriate smoothing mode for the halo.
            loGfx.smoothingmode = .Drawing2D.smoothingmode.AntiAlias

            * Transform the graphics object so that the same half may be used for both halo and text output.
            loGfx.Transform = loMatrix

            * Using a suitable pen...
            Local loPen As xfcPen
            loPen = .Pen.new(xcolor1)

            * Draw around the outline of the path
            loGfx.DrawPath(loPen, loPath)

            * and then fill in for good measure.
            loGfx.FillPath( .SolidBrush.new(xcolor1), loPath)

            * setup the smoothing mode for path drawing
            This.oGfx.smoothingmode = .Drawing2D.smoothingmode.AntiAlias

            * and the interpolation mode for the expansion of the halo bitmap
            This.oGfx.interpolationMode = .Drawing2D.interpolationMode.HighQualityBicubic

            * expand the halo making the edges nice and fuzzy.
            This.oGfx.DrawImage(loBmp, This.rectangle, 0, 0,loBmp.Width, loBmp.Height, .GraphicsUnit.Pixel)

            * Redraw the original
            This.oGfx.FillPath(.SolidBrush.new(xcolor1), loPath)

            w=rec0.Width
            h=rec0.Height
            orec=.rectangle.new(x3,x4,w,h)
            * Get the graphics object for the image.
            This.oGfx.DrawImage(.Bitmap.fromfile(This.Picture),orec)

            * Get the resized version of the image
            Local loResized As xfcBitmap
            loResized = .Bitmap.new(This.obmp, lnWidth, lnHeight)

            loResized.Save(yrep0+ ;
            "thumbnails\"+Allt(_Screen.ypicture),.Imaging.ImageFormat.JPEG)

            Wait Window("Image "+_Screen.ypicture+"....... "+Trans(i)+"/"+Trans(gnbre)) At Srows()/6,Scols()/6 Nowait
        Endwith

    Endproc

Enddefine
*
*End code

---

*-7-yvignette.prg

*Begin Code
If !Vartype(m.yrep0)="C"

clea all
    m.yrep0=Addbs(Justpath(Sys(16,1)))
Endi

Declare Integer Sleep In kernel32 Integer
Do  Locfile("system.app")
Messagebox("this code convert an images folder to thumbnails 160x120",0+32,"Vignettes simples",1000)

set classlib to

Set Classlib To Locfile["GDIPLUSX.VCX";
,"vcx"]  Additive
If Directory(m.yrep0+"thumbnails")
    Set Safe Off
    Local m.zz
    m.zz=m.yrep0+"thumbnails\*.*"
    Dele File (m.zz)
    Set Safe On
Else
    Md (m.yrep0+"thumbnails")
Endi

Publi gnbre
Local m.yrep
m.yrep=Addbs(Getdir())
Set Defa To (yrep)
gnbre=Adir(gabase,"*.jpg")  &&png,bmp,gif...
If gnbre=0
    Messagebox(m.yrep+  " dont contains jpg images !",0+16+4096,"Error",1000)
    Return .F.
Endi
If Vartype(_Screen.ocanvas1)="O"
    _Screen.ocanvas1=Null
    Release _Screen.ocanvas1
Endi
With _Screen
    .AddObject("ocanvas1","ocanvas")
    .AddProperty("ypicture","")

    For i=1 To gnbre
        .ypicture=gabase(i,1)
        .ocanvas1.Draw()
        Sleep(10)
    Endfor

Endwith

Try
    _Screen.ocanvas1=Null
    Release _Screen. ocanvas1
    Release Classlib "gdiplusX"
Catch
    Set Classlib To
Endtry

aa=(yrep0+"thumbnails\")
Run/N explorer &aa   &&show images with effects
Set Defa To (yrep0)
Return
Define Class oCanvas As imgcanvas
    Anchor = 15
    Stretch = 2
    Height = 511
    Left = 9
    Top = 5
    Width = 783
    smoothingmode = 0
    interpolationMode=7
    drawWhenInvisible=.T.
    Visible=.F.
    Name = "ocanvas"

    Procedure beforedraw
        This.Picture=_Screen.ypicture
        With _Screen.System.drawing
            Local xcolor0,xcolor
            xcolor0=.Color.white

            &&thumb dimensions
            Local lnWidth,lnHeight
            lnWidth=160  &&to adapt
            lnHeight=120 &&to adapt

            This.Clear()
            This.oGfx.Clear(xcolor0 )

            orec=.rectangle.new(0,0,lnWidth,lnHeight)
            * Get the graphics object for the image.
            loBMP=.Bitmap.fromfile(_Screen.ypicture)
            loResized = .Bitmap.new(loBMP, lnWidth, lnHeight)
            loResized.Save(m.yrep0+ ;
            "thumbnails\"+Allt(_Screen.ypicture),.Imaging.ImageFormat.JPEG)  &&jpeg,png,bmp,gif...

            Wait Window("Image "+_Screen.ypicture+"....... "+Trans(i)+"/"+Trans(gnbre)) At Srows()/6,Scols()/6 Nowait

        Endwith

    Endproc

Enddefine
*End code

Can customize many parameters in code as colors,offsets,....

Gditexturebrush()	:created on 04 of february 2017
gdipusX textureBrush is documented in
http://msdn2.microsoft.com/en-us/library/System.Drawing.TextureBrush.TextureBrush%28vs.80%29.aspx
https://msdn.microsoft.com/en-us/library/windows/desktop/ms534407(v=vs.85).aspx

it have many syntaxes documented in vfp9  gdiplusX system.drawing.prg
its available for gradientbrush and texturebrush and is using with filling area technics.

** Method: xfcTextureBrush.TextureBrush : Initializes a new TextureBrush object that uses the specified image.
** Parameters:
	**  Image bitmap
	**  Image image, Rectangle dstRect
	**  Image image, RectangleF dstRect
	**  Image image, WrapMode wrapMode
	**  Image image, Rectangle dstRect, ImageAttributes imageAttr
	**  Image image, RectangleF dstRect, ImageAttributes imageAttr
	**  Image image, WrapMode wrapMode, Rectangle dstRect
	**  Image image, WrapMode wrapMode, RectangleF dstRect

 texturebrush want to say filling all background area  with image (in respect of wrapmode value :
*!*	https://msdn.microsoft.com/en-us/library/system.drawing.drawing2d.wrapmode(v=vs.80).aspx
*!*	    Clamp	The texture or gradient is not tiled.
*!*		Tile	Tiles the gradient or texture.
*!*		TileFlipX	Reverses the texture or gradient horizontally and then tiles the texture or gradient.
*!*		TileFlipXY	Reverses the texture or gradient horizontally and vertically and then tiles the texture or gradient.
*!*		TileFlipY	Reverses the texture or gradient vertically and then tiles the texture or gradient.


to fill the area with one static image dont use textureBrush.

	

Click on code to select [then copy] -click outside to deselect

*8* created on  04 of february 2017
Set Classlib To Locfile("gdiplusX","vcx")
Publi yform
yform=Newobject("asup")
Release Classlib gdiplusX
yform.Show
Read Events
Retu
*
Define Class asup As Form
	BorderStyle = 3
	Height = 419
	Width = 604
	ShowWindow = 2
	AutoCenter = .T.
	Caption = ""
	BackColor=0
	Caption="Texturebrush()"
	Name = "Form1"

	Add Object imgcanvas1 As imgcanvas With ;
		Anchor = 15, ;
		Height = 421, ;
		Left = -1, ;
		Top = -1, ;
		Width = 613, ;
		Name = "Imgcanvas1"

	Add Object combo1 As ComboBox With ;
		FontBold = .T., ;
		Height = 24, ;
		Left = 483, ;
		Top = 12, ;
		Width = 57, ;
		Name = "Combo1"

	Add Object command1 As CommandButton With ;
		FontBold = .T., ;
		Height = 24, ;
		Left = 20, ;
		Top = 12, ;
		Width = 57, ;
		backcolor=Rgb(0,255,0), ;
		caption="Get pict",;
		Name = "Command1"

	Procedure  command1.Click
		Thisform.imgcanvas1.ypict=Getpict()
		Thisform.combo1.Value=1
		Thisform.combo1.InteractiveChange
	Endproc

	Procedure imgcanvas1.Setup
		This.AddProperty("ypict",Home(1)+"GRAPHICS\ICONS\ELEMENTS\SNOW.ICO")
	Endproc

	Procedure imgcanvas1.beforedraw
		*!*wrapmode enumeration
		*!*	#DEFINE WrapModeTile  0
		*!*	#DEFINE WrapModeTileFlipX 1
		*!*	#DEFINE WrapModeTileFlipy 2
		*!*	#DEFINE WrapModeTileFlipXY 3
		*!*	#DEFINE WrapModeClamp  4

		With _Screen.System.drawing
			This.Clear()
			loGfx=This.ogfx
			Local lnwidth,lnHeight,x,Y
			x=100
			Y=50
			lnwidth =400
			lnHeight=300

			Local img As xfcImage
			img = .Image.FromFile(This.ypict)

			Local tiWrapmode As  EnumWrapMode
			tiWrapmode=Thisform.combo1.Value

			Local Rect As xfcRectangle
			Rect=.rectangle.new(x,Y,lnwidth,lnHeight)


			*system.drawing.prg  syntax**>**  Image image, WrapMode wrapMode, Rectangle dstRect
			*syntax can be simple  **>**        Image image
			*LPARAMETERS toImage AS xfcImage,tiWrapMode AS EnumWrapMode,	toDstRect AS xfcRectangle
			br= .TextureBrush.new(img,tiWrapmode,Rect)
			loGfx.FillEllipse(br, Rect)
			loGfx.drawEllipse(.Pen.new(.Color.red,3),Rect)
		Endwith
	Endproc

	Procedure combo1.InteractiveChange
		Thisform.imgcanvas1.Draw
	Endproc

	Procedure combo1.Init
		With This
			.AddItem("0")
			.AddItem("1")
			.AddItem("2")
			.AddItem("3")
			.AddItem("4")
			.ListIndex=1
			.Value=1
			.Style=2
		Endwith
	Endproc

	Procedure Destroy
		Clea Events
	Endproc

Enddefine
*
*-- EndDefine: asup

Click on code to select [then copy] -click outside to deselect

*9*  created on 04 of february 2017
*clip ellipse or circle on any picture.
*for obtaining a circle use lnWidth=lnheight (or squared image)
DO LOCFILE("System.App")
local m.xpict
m.xpict=getpict()
if empty(m.xpict)
return .f.
endi

WITH _SCREEN.SYSTEM.Drawing
	LOCAL loBmp AS xfcBitMap
	loBmp = .BITMAP.FromFile(m.xpict)
	LOCAL loGfx AS xfcGraphics
	loGfx = .Graphics.FromImage(loBmp)
	LOCAL lnWidth, lnHeight
	lnWidth  = loBmp.WIDTH
	lnHeight = loBmp.HEIGHT
	LOCAL loClipPath AS xfcGraphicsPath
	loClipPath = .Drawing2d.GraphicsPath.New()
	loClipPath.AddEllipse(0, 0, lnWidth, lnHeight)
	loGfx.SetClip(m.loClipPath, .Drawing2d.CombineMode.xor)
	loGfx.FillRectangle( .Brushes.White, 0, 0, loBmp.WIDTH, loBmp.HEIGHT)
	loBmp.SAVE("result.png", .imaging.imageformat.PNG)
ENDWITH

*show
RUN /N Explorer.EXE result.png

to obtain a clipped circle make in code lnWidth=LnHeight or use a squared image

Click on code to select [then copy] -click outside to deselect

*10* apply a default transparency to gdiplusX image object in above code.
*!*	can apply the function MakeTransparent() function documented in
*!*	http://msdn2.microsoft.com/en-us/library/System.Drawing.Bitmap.MakeTransparent%28vs.80%29.aspx
*!*	its a system.drawing.prg function
*!*	it apply the default color transparency to image object.
*!*	it can be wthout parameter or with xfccolor parameter (color object).

*!*	Bitmap.MakeTransparent () 	Makes the default transparent color transparent for this Bitmap.
*!*	Bitmap.MakeTransparent (Color) 	Makes the specified color transparent for this Bitmap.

*!* below the adapted code with setting the white color  as default transparncy color
*!*the result image is rsized(as you want) to make it with wanted dimensions (here squared as circular).
*!* the result is shown on a form...change the form backcolor to see the transparncy effect.

Clea All
Clea Resources    && clear the last image retained in vfp cache

Do Locfile("System.App")
Local m.xpict
m.xpict=Getpict()
If Empty(m.xpict)
	Return .F.
Endi
Publi m.yrep
m.yrep= Addbs(Justpath(Sys(16,1)))
Set Defa To (yrep)

With _Screen.System.Drawing
	Local  loBMP1, loBmp As xfcBitMap
	loBmp = .Bitmap.FromFile(m.xpict)

	Local loGfx As xfcGraphics
	loGfx = .Graphics.FromImage(loBmp)
	Local lnWidth, lnHeight
	lnWidth  = loBmp.Width
	lnHeight = loBmp.Height
	Local loClipPath As xfcGraphicsPath
	loClipPath = .Drawing2d.GraphicsPath.New()
	loClipPath.AddEllipse(0, 0, lnWidth, lnHeight)
	loGfx.SetClip(m.loClipPath, .Drawing2d.CombineMode.xor)
	loGfx.FillRectangle( .Brushes.White, 0, 0, lnWidth, lnHeight)

	loBmp.makeTransparent(.Color.White)  && set transparency to white color
	loBMP1=loBmp.getThumbnailImage(150,150)   &&resize  (circle)

	loBMP1.Save("result.png", .imaging.imageformat.PNG)
Endwith

*show to see transparency on a form
Local oform As Form
oform=Newobject("asup")
oform.Show(1)
m.yrep=Null
Release m.yrep
Retu

Define Class asup As Form
	DoCreate = .T.
	Caption = "Test image  transparency"
	BackColor = Rgb(0,0,0)
	BorderStyle=0
	MaxButton=.F.
	AutoCenter=.T.
	Name = "Form1"

	Add Object command1 As CommandButton With ;
		anchor=0,;
		Height = 27, ;
		Left = 10, ;
		Top = 10, ;
		Width = 80, ;
		mousepointer=15,;
		backcolor=Rgb(0,255,0),;
		caption="backcolor...",;
		Name = "command1"

	Add Object image1 As Image With ;
		Anchor=0,;
		Picture = m.yrep+"result.png", ;
		Height = 100, ;
		Left = 132, ;
		Top = 60, ;
		Width = 100, ;
		Name = "Image1"

	Procedure command1.Click
		Thisform.BackColor=Getcolor()
	Endproc

Enddefine

the white square disappear with applying transparency.