Re: [Gimp-developer] Problem deleting mask saved to channel
Hi, Cindy Huyser [EMAIL PROTECTED] writes: I'm in the process of writing a little plug-in that will automate the process of converting a selection to a mask. FYI, GIMP-1.3 finally has this feature builtin. My goal is to add a layer to the image containing the mask made from the selection. The outline of my process is: 1) Save the selection to a channel 2) Duplicate the original layer 3) Add alpha to the original and duplicate layers 4) Add a layer mask (transparent/black) to the duplicate layer 5) Copy the selection mask saved as a channel 6) Paste the copy buffer onto the duplicate layer 7) Anchor the pasted layer 8) Delete the selection mask channel I've been everything except for deleting the selection mask channel. So far, I've tried: 1) calling gimp_channel_delete() on the channel ID, either preceded by gimp_selection_clear() or by itself. The call returns TRUE. 2) calling gimp_drawable_delete() on the channel's drawable, with and without preceding it by a call to gimp_drawable_detach(). From the PDB help of gimp_channel_delete(): This procedure deletes the specified channel. This must not be done if the gimage containing this channel was already deleted or if the channel was already removed from the image. The only case in which this procedure is useful is if you want to get rid of a channel which has not yet been added to an image. The correct way to get rid of the channel is to remove it from the image using gimp_image_remove_channel(). Salut, Sven ___ Gimp-developer mailing list [EMAIL PROTECTED] http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-developer
[Gimp-developer] Problem deleting mask saved to channel
Hello, all, I'm in the process of writing a little plug-in that will automate the process of converting a selection to a mask. My goal is to add a layer to the image containing the mask made from the selection. The outline of my process is: 1) Save the selection to a channel 2) Duplicate the original layer 3) Add alpha to the original and duplicate layers 4) Add a layer mask (transparent/black) to the duplicate layer 5) Copy the selection mask saved as a channel 6) Paste the copy buffer onto the duplicate layer 7) Anchor the pasted layer 8) Delete the selection mask channel I've been everything except for deleting the selection mask channel. So far, I've tried: 1) calling gimp_channel_delete() on the channel ID, either preceded by gimp_selection_clear() or by itself. The call returns TRUE. 2) calling gimp_drawable_delete() on the channel's drawable, with and without preceding it by a call to gimp_drawable_detach(). I flush and update the drawable for the duplicated layer when the routine is finished, as I do the drawable associated with the saved selection mask (except, course, when I call delete() on the selection mask channel). In every case, the selection mask channel remains visible in the Layers dialog. I have been working with a grayscale test image, so the selection channel mask and gray channels are the only channels that appear in the dialog. I'm still pretty much a newbie at doing this, so I'm sure there's something I've overlooked. Any ideas? Thanks, Cindy Huyser ___ Gimp-developer mailing list [EMAIL PROTECTED] http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-developer
