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Sets whether image supports transparency (matte channel)
Component | Version | macOS | Windows | Linux | Server | iOS SDK |
GraphicsMagick | 2.0 | ✅ Yes | ✅ Yes | ✅ Yes | ✅ Yes | ✅ Yes |
Parameter | Description | Example |
---|---|---|
ImageRef | The image reference number. | 1 |
flag | A boolean value. | 1 |
Returns "OK" on success.
Removes alpha channel:
MBS("GMImage.SetMatte"; $image; 0)
Adds an alpha channel:
MBS("GMImage.SetMatte"; $image; 1)
Create picture with red and 50% alpha:
#Create picture
Set Variable [$img; Value:MBS( "GMImage.New"; "16x16"; "white")]
#Add alpha channel
Set Variable [$r; Value:MBS( "GMImage.SetMatte"; $img; 1)]
#Set background color and fill
Set Variable [$r; Value:MBS( "GMImage.SetBackgroundColor"; $img; "COLOR 65535 0 0 0.5")]
Set Variable [$r; Value:MBS( "GMImage.Erase"; $img)]
#Write to field
Set Variable [$pic; Value:MBS( "GMImage.WriteToPNGContainer"; $img; "test.png" )]
Set Field [test::r; $pic]
#Cleanup
Set Variable [$r; Value:MBS( "GMImage.Release"; $img)]
Remove alpha channel:
# Load from container
Set Variable [ $BigImageRef ; Value: MBS("GMImage.NewFromContainer"; Test::BigImage) ]
# Turn off alpha channel
Set Variable [ $Result ; Value: MBS("GMImage.SetMatte"; $BigImageRef; 0) ]
# Store output and release the image
Set Field [ Test::Result ; MBS( "GMImage.WriteToPNGContainer"; $BigImageRef ) ]
# or JPEG?
// Set Field [ Test::Result ; MBS( "GMImage.WriteToJPEGContainer"; $BigImageRef ) ]
Set Variable [ $Error ; Value: MBS("GMImage.Free";$BigImageRef) ]
This function checks for a license.
Created 18th August 2014, last changed 17th August 2023