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XDCMay2019MiamiUSA

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/Images/PNG/Write Gray image
Function:
Required plugins for this example: MBS Images Plugin, MBS Main Plugin
You find this example project in your Plugins Download as a Xojo project file within the examples folder: /Images/PNG/Write Gray image
This example is the version from Sun, 5th May 2018.
Project "Write Gray image.rbp"
Class App Inherits Application
Const kEditClear = "&Delete"
Const kFileQuit = "&Quit"
Const kFileQuitShortcut = ""
EventHandler Sub Open() // Write a RGBA PNG file dim current as Picture = LogoMBS(500) // needs Main Plugin // create a mask dim g as Graphics = current.Mask.Graphics g.ForeColor = &cFFFFFF g.FillRect 0,0,500,500 g.ForeColor = &c000000 g.FillOval 0,0,500,500 // show in window window1.Backdrop = current // and write to file dim f as FolderItem = SpecialFolder.Desktop.Child("test with alpha.png") dim p as new PNGWriterMBS if p.OpenWriteDestination(f) then // open file if p.SetGrayPicture(current, current.mask) then // set picture to write if p.SetHeader(false, -1) then // setup file header if p.SetGamma(0) then // and default gamma if p.WriteInfo then // write file header if p.WriteRows then // write pixels if p.WriteEnd then // and write file end p = nil // cleanup f.Launch end if end if end if end if end if end if end if f = SpecialFolder.Desktop.Child("test without alpha.png") p = new PNGWriterMBS if p.OpenWriteDestination(f) then // open file if p.SetGrayPicture(current) then // set picture to write if p.SetHeader(false, -1) then // setup file header if p.SetGamma(0) then // and default gamma if p.WriteInfo then // write file header if p.WriteRows then // write pixels if p.WriteEnd then // and write file end p = nil // cleanup f.Launch end if end if end if end if end if end if end if End EventHandler
End Class
MenuBar MenuBar1
MenuItem FileMenu = "&File"
MenuItem FileQuit = "#App.kFileQuit"
MenuItem EditMenu = "&Edit"
MenuItem EditUndo = "&Undo"
MenuItem UntitledMenu1 = "-"
MenuItem EditCut = "Cu&t"
MenuItem EditCopy = "&Copy"
MenuItem EditPaste = "&Paste"
MenuItem EditClear = "#App.kEditClear"
MenuItem UntitledMenu0 = "-"
MenuItem EditSelectAll = "Select &All"
End MenuBar
Class Window1 Inherits Window
End Class
End Project

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The items on this page are in the following plugins: MBS Images Plugin.




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