Code : Tout sélectionner
#include <GDIPlus.au3>
#include <WinAPI.au3>
_ImageResize(@ScriptDir & "\spare.gif", @ScriptDir & "\spare.png", 400, 300)
; #FUNCTION# =========================================================================================
; Name...........: _ImageResize
; Description....: Resize an image and optionally convert it to the format you want.
; Syntax.........: _ImageResize($sInImage, $sOutImage, $iW, $iH)
; Parameters ....: $sInImage - Full path to the image to resize / convert.
; In types: *.bmp, *.gif, *.ico, *.jpg, *.jpeg, *.png, *.tif, *.tiff
; $sOutImage - Full path where to save the resized / converted image.
; Out types: *.bmp, *.gif, *.jpg, *.jpeg, *.png, *.tif, *.tiff
; $iW - Width to resize image to.
; $iH - Height to resize image to.
; Return values .: Success - Return 1 and @error 0
; Failure - Return 0 and @error 1~5
; @error 1 = In File does not exist
; @error 2 = In File format not supported
; @error 3 = Out File path does not exist
; @error 4 = Out file format not supported
; @error 5 = Resize Width or Height not an integer
; Author ........: smashly
; ====================================================================================================
Func _ImageResize($sInImage, $sOutImage, $iW, $iH)
Local $sOP, $sOF, $sInExt, $Ext, $hBitmap, $hImage1, $hImage2, $hGraphic, $CLSID, $i = 0
Local $sType = "BMP|GIF|ICO|JPG|JPEG|PNG|TIF|TIFF"
If Not FileExists($sInImage) Then Return SetError(1, 0, 0)
$sInExt = StringUpper(StringTrimLeft($sInImage, StringInStr($sInImage, ".", 0, -1)))
If Not StringRegExp($sInExt, "\A(" & $sType & ")\z", 0) Then Return SetError(2, 0, 0)
;OutFile path, to use later on.
$sOP = StringLeft($sOutImage, StringInStr($sOutImage, "\", 0, -1))
If Not FileExists($sOP) Then Return SetError(3, 0, 0)
;OutFile name, to use later on.
$sOF = StringTrimLeft($sOutImage, StringInStr($sOutImage, "\", 0, -1))
;OutFile extension , to use for the encoder later on.
$Ext = StringUpper(StringTrimLeft($sOutImage, StringInStr($sOutImage, ".", 0, -1)))
If Not StringRegExp($Ext, "\A(" & $sType & ")\z", 0) Or $Ext = "ICO" Then Return SetError(4, 0, 0)
If Not IsInt($iW) And Not IsInt($iH) Then Return SetError(5, 0, 0)
; WinAPI to create blank bitmap at the width and height to put your resized image on.
$hBitmap = _WinAPI_CreateBitmap($iW, $iH, 1, 32)
;Start GDIPlus
_GDIPlus_Startup()
;Get the handle of blank bitmap you created above as an image
$hImage1 = _GDIPlus_BitmapCreateFromHBITMAP($hBitmap)
;Load the image you want to resize.
$hImage2 = _GDIPlus_ImageLoadFromFile($sInImage)
;Get the graphic context of the blank bitmap
$hGraphic = _GDIPlus_ImageGetGraphicsContext($hImage1)
;Draw the loaded image onto the blank bitmap at the size you want
_GDIPlus_GraphicsDrawImageRect($hGraphic, $hImage2, 0, 0, $iW, $iH)
;Get the encoder of to save the resized image in the format you want.
$CLSID = _GDIPlus_EncodersGetCLSID($Ext)
;Generate a number for out file that doesn't already exist, so you don't overwrite an existing image.
;Do
; $i += 1
;Until (Not FileExists($sOP & $i & "_" & $sOF))
;Prefix the number to the begining of the output filename
;$sOutImage = $sOP & $i & "_" & $sOF
$sOutImage = $sOP & $sOF
;Save the new resized image.
_GDIPlus_ImageSaveToFileEx($hImage1, $sOutImage, $CLSID)
;Clean up and shutdown GDIPlus.
_GDIPlus_ImageDispose($hImage1)
_GDIPlus_ImageDispose($hImage2)
_GDIPlus_GraphicsDispose($hGraphic)
_WinAPI_DeleteObject($hBitmap)
_GDIPlus_Shutdown()
Return SetError(0, 0, 1)
EndFunc ;==>_ImageResize
