기타 [vb.net] Create Animated Gif
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Option Strict Off
Imports System
Imports System.Collections.Generic
Imports System.Diagnostics
Imports System.Text
Imports System.IO
Imports System.Collections
Imports System.Collections.Specialized
Imports System.Drawing
Imports System.Drawing.Imaging
Imports System.Drawing.Drawing2D
Imports System.Drawing.Image
Imports System.Threading
Imports System.Runtime.Serialization
Imports System.Windows.Forms
Imports System.Windows
Imports System.Runtime.InteropServices
Module CreateAnimatedGif
Dim environ As String = Environment.UserName
Dim userPath As String = "C:\Users\" & environ & "\Desktop\Animated Gifs\"
Dim Bitmaps As List(Of Bitmap) = New List(Of Bitmap)
Dim width As Integer
Dim height As Integer
Dim windowRect As New NativeMethods.RECT
Sub Main()
'Use WindowCoord subroutine if you want to capture a specific application
'window, or child window within application.
'otherwise, leave commented.
'WindowCoord()
'Screenshots subroutine will need to be looped based on
'the amount of time you want to record on-screen actions
'otherwise it will only take one screenshot.
'If you are carrying out a specific task, maybe you
'can write code to loop the subroutine until the task is completed.
Screenshots()
'assemble screenshots into animated GIF
'Sets certain properties, such as Frame delay and number of times the animation
'will loop
AssembleGIF()
End Sub
Sub WindowCoord()
Dim MainWindow As IntPtr
Dim WindowName As String
Dim count As Integer
Dim Lstring As Integer
Dim Rstring As Integer
'Create a buffer of 256 characters
Dim Caption As New System.Text.StringBuilder(256)
For Each p As Process In Process.GetProcesses()
If p.MainWindowTitle.Contains("Add Window Title Here, or a unique part of it") Then
WindowName = p.MainWindowTitle
MainWindow = p.MainWindowHandle
End If
Next
'The following commented code can be used to parse WindowName
'if you need to get a substring out of the
'window title
'it will loop through and look at each character
'in the string
'For Each c As Char In WindowName
' count += 1
' If c = "[" Then
' Lstring = count
' ElseIf c = "]" Then
' Rstring = count
' End If
'Next
'WindowName = WindowName.Substring(Lstring, WindowName.Length - Lstring - 1)
'Enumerate child windows
For Each child As IntPtr In NativeMethods.GetChildWindows(MainWindow)
NativeMethods.GetWindowText(child, Caption, Caption.Capacity)
If Caption.ToString = WindowName Then
'Get window width, height which will be used in
'Screenshot subroutine
NativeMethods.GetWindowRect(child, windowRect)
width = windowRect.right - windowRect.left
height = windowRect.bottom - windowRect.top
End If
Next
End Sub
Sub Screenshots()
Static count As Integer
'declare variables
Dim bounds As Rectangle
Dim screenshot As System.Drawing.Bitmap
Dim graph As Graphics
'Use the following two lines to get screenshot coordinates, used for full screen (screenshot width and height in ratio to screen)
bounds = Screen.PrimaryScreen.Bounds
screenshot = New System.Drawing.Bitmap(bounds.Width, bounds.Height, System.Drawing.Imaging.PixelFormat.Format32bppRgb)
'If you only want to capture a specific application window, or child window you can use the following line of code
'But you will need to call the WindoCoord Subroutine and enter the specific window title you are looking for
'screenshot = New System.Drawing.Bitmap(width, height, System.Drawing.Imaging.PixelFormat.Format32bppRgb)
'screen shot quality
screenshot.SetResolution(300, 300) 'dpi
graph = Graphics.FromImage(screenshot)
graph.Clear(Color.White)
graph.InterpolationMode = Drawing2D.InterpolationMode.HighQualityBicubic
graph.SmoothingMode = Drawing2D.SmoothingMode.AntiAlias
graph.SmoothingMode = Drawing2D.SmoothingMode.HighQuality
graph.CopyFromScreen(windowRect.left, windowRect.top, 0, 0, New Size(width, height), CopyPixelOperation.SourceCopy)
graph.TextRenderingHint = Drawing.Text.TextRenderingHint.AntiAlias
'Print text on screenshot
Using F As New Font("Arial", 10)
'Create a brush
Using B As New SolidBrush(Color.Black)
'Draw some text
graph.DrawString(Now.ToString("yyyy-MM-dd HH:mm:ss fff"), F, B, 20, 20)
End Using
End Using
'Add screenshot to Bitmaps List for later
'Assembly and animation
Dim Bmp As New Bitmap(screenshot)
Bitmaps.Add(Bmp)
count += 1
If count < 5 Then Screenshots()
End Sub
Sub AssembleGIF()
#Region "Exsample"
'Bitmaps.Clear()
'Bitmaps.Add(New Bitmap("C:\Users\Administrator\OneDrive\문서\카카오톡 받은 파일\요미_0013m.jpg"))
'Bitmaps.Add(New Bitmap("C:\Users\Administrator\OneDrive\문서\카카오톡 받은 파일\요미_0018m.jpg"))
#End Region
'GDI+ constants absent from system.drawing
Const PropertyTagFrameDelay As Integer = &H5100
Const PropertyTagLoopCount As Integer = &H5101
Const PropertyTagTypeLong As Short = 4
Const PropertyTagTypeShort As Short = 3
Const UIntBytes As Integer = 4
Dim gifEncoder As ImageCodecInfo = GetEncoder(ImageFormat.Gif)
Dim myEncoder As System.Drawing.Imaging.Encoder = System.Drawing.Imaging.Encoder.Quality
'Parameters of the first frame
Dim myEncoderParameters1 As New EncoderParameters(1)
myEncoderParameters1.Param(0) = New EncoderParameter(System.Drawing.Imaging.Encoder.SaveFlag, CLng(EncoderValue.MultiFrame))
'Parameters of other frames
Dim myEncoderParametersN = New EncoderParameters(1)
myEncoderParametersN.Param(0) = New EncoderParameter(System.Drawing.Imaging.Encoder.SaveFlag, CLng(EncoderValue.FrameDimensionTime))
Dim myEncoderParametersFlush As New EncoderParameters(1)
myEncoderParametersFlush.Param(0) = New EncoderParameter(System.Drawing.Imaging.Encoder.SaveFlag, CLng(EncoderValue.Flush))
'Property for the frame delay (apparently no other way to create a fresh instance)
Dim frameDelay As PropertyItem = DirectCast(FormatterServices.GetUninitializedObject(GetType(PropertyItem)), PropertyItem)
frameDelay.Id = PropertyTagFrameDelay
frameDelay.Type = PropertyTagTypeLong
'Length of the value in bytes
frameDelay.Len = Bitmaps.Count * UIntBytes
'The value is an array of 4-byte entries: one per frame.
'Every entry is the frame delay in 1/100-s of a second, in little endian.
Dim desiredLength = Bitmaps.Count * UIntBytes
'E.g., here, we're setting the delay of every frame to 1 second.
frameDelay.Len = desiredLength
frameDelay.Value = New Byte(desiredLength - 1) {}
Dim argument As UInteger = 70 '// 딜레이
Dim frameDelayBytes = BitConverter.GetBytes(argument)
Dim J As Integer = 0
For J = LBound(Bitmaps.ToArray) To Bitmaps.Count
If J < Bitmaps.Count Then
Array.Copy(frameDelayBytes, 0, frameDelay.Value, J * UIntBytes, UIntBytes)
Else
Exit For
End If
Next
'Property Item for the number of animation loops
Dim loopPropertyItem As PropertyItem = DirectCast(FormatterServices.GetUninitializedObject(GetType(PropertyItem)), PropertyItem)
loopPropertyItem.Id = PropertyTagLoopCount
loopPropertyItem.Type = PropertyTagTypeShort
loopPropertyItem.Len = 1
'Ensure that the user has a working directory set-up
'to store the Gif
If (Not System.IO.Directory.Exists(userPath)) Then
System.IO.Directory.CreateDirectory(userPath)
End If
'0 means to animate forever
Dim loopArgument As UShort = 0
loopPropertyItem.Value = BitConverter.GetBytes(loopArgument)
'Enter name of Gif in FileStream() below. Maybe user Window Title?
Dim Fstream As FileStream = New FileStream(userPath & "\" & "Enter Name of Gif here" & ".Gif", FileMode.Create)
Using Fstream
Dim first As Boolean = True
Dim firstBitmap As Bitmap = Nothing
'Bitmaps is a collection of Bitmap instances that'll become gif frames
For Each bitmap As Bitmap In Bitmaps
bitmap = ResizeImage(bitmap, New Size(500, 500))
If first = True Then
firstBitmap = bitmap
firstBitmap.SetPropertyItem(frameDelay)
firstBitmap.SetPropertyItem(loopPropertyItem)
firstBitmap.Save(Fstream, gifEncoder, myEncoderParameters1)
first = False
Else
firstBitmap.SaveAdd(bitmap, myEncoderParametersN)
End If
Next
firstBitmap.SaveAdd(myEncoderParametersFlush)
End Using
End Sub
Public Function ResizeImage(ByVal bm_source As Image, ByVal s As Size) As Image
Dim ratioX = CDbl(s.Width) / bm_source.Width
Dim ratioY = CDbl(s.Height) / bm_source.Height
Dim ratio = Math.Min(ratioX, ratioY)
Dim newWidth = CInt((bm_source.Width * ratio))
Dim newHeight = CInt((bm_source.Height * ratio))
Dim newImage = New Bitmap(s.Width, s.Height)
Using g = Graphics.FromImage(newImage)
Dim y As Integer = (s.Height / 2) - newHeight / 2
Dim x As Integer = (s.Width / 2) - newWidth / 2
g.DrawImage(bm_source, x, y, newWidth, newHeight)
End Using
Return newImage
End Function
Private Function GetEncoder(ByVal format As ImageFormat) As ImageCodecInfo
Dim codecs As ImageCodecInfo() = ImageCodecInfo.GetImageDecoders()
Dim codec As ImageCodecInfo
For Each codec In codecs
If codec.FormatID = format.Guid Then
Return codec
End If
Next codec
Return Nothing
End Function
End Module
'Windows 32 API functions used to
'get window properties
Public Class NativeMethods
<DllImport("User32.dll")>
Private Shared Function EnumChildWindows _
(ByVal WindowHandle As IntPtr, ByVal Callback As EnumWindowProcess,
ByVal lParam As IntPtr) As Boolean
End Function
<StructLayout(LayoutKind.Sequential)>
Public Structure RECT
Public left As Integer
Public top As Integer
Public right As Integer
Public bottom As Integer
End Structure 'RECT
Public Delegate Function EnumWindowProcess(ByVal Handle As IntPtr, ByVal Parameter As IntPtr) As Boolean
Declare Function GetWindowRect Lib "user32" (ByVal hwnd As Integer, ByRef lpRect As RECT) As Integer
Public Declare Auto Function GetWindowText Lib "user32" _
(ByVal hWnd As System.IntPtr,
ByVal lpString As System.Text.StringBuilder,
ByVal cch As Integer) As Integer
Public Shared Function GetChildWindows(ByVal ParentHandle As IntPtr) As IntPtr()
Dim ChildrenList As New List(Of IntPtr)
Dim ListHandle As GCHandle = GCHandle.Alloc(ChildrenList)
Try
EnumChildWindows(ParentHandle, AddressOf EnumWindow, GCHandle.ToIntPtr(ListHandle))
Finally
If ListHandle.IsAllocated Then ListHandle.Free()
End Try
Return ChildrenList.ToArray
End Function
Private Shared Function EnumWindow(ByVal Handle As IntPtr, ByVal Parameter As IntPtr) As Boolean
Dim ChildrenList As List(Of IntPtr) = GCHandle.FromIntPtr(Parameter).Target
If ChildrenList Is Nothing Then Throw New Exception("GCHandle Target could not be cast as List(Of IntPtr)")
ChildrenList.Add(Handle)
Return True
End Function
End Class
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