GTK+ Forums

nadavvin · Familiar Face Joined: 06 Dec 2007 Posts: 19

Code: (Plaintext)
1 2 3 4 5 6 7 8 9 10 11 12 13 14	>>> img = gtk.Image() >>> img.get_pixmap() (None, None) >>> img.set_from_file('a.xpm') >>> img.get_pixmap() Traceback (most recent call last): File "<stdin>", line 1, in <module> ValueError: image should be a GdkPixmap or empty >>> img.get_pixmap() Traceback (most recent call last): File "<stdin>", line 1, in <module> ValueError: image should be a GdkPixmap or empty

get_image should return gtk.gdk.image but it gave the same error:

Code: (Plaintext)
1 2 3 4 5 6	img.get_image() Traceback (most recent call last): File "<stdin>", line 1, in <module> ValueError: image should be a GdkImage or empty

tadeboro · Posted: Sun Nov 30, 2008 10:03 pm Post subject:

Hi.

What does the

Code: (Python)
1	img.get_storage_type()

return?

dreblen · Posted: Sun Nov 30, 2008 10:15 pm Post subject:

get_storage_type should return this:

Code: (Plaintext)
1	<enum GTK_IMAGE_PIXBUF of type GtkImageType>

which means that you can't directly get a GdkPixmap, you can only get a GdkPixbuf, see here:
http://library.gnome.org/devel/gtk/stable/GtkImage.html#GtkImageType
You can draw a GdkPixbuf on a GdkPixmap if you need a pixmap though:
C
http://library.gnome.org/devel/gdk/stable/gdk-Drawing-Primitives.html#gdk-draw-pixbuf
PyGTK
http://pygtk.org/docs/pygtk/class-gdkdrawable.html#method-gdkdrawable--draw-pixbuf

nadavvin · Familiar Face Joined: 06 Dec 2007 Posts: 19

thanks (I didn't try yet)

Why is there method "get_pixmap" if we can use it only if the image is empty?

dreblen · Posted: Mon Dec 01, 2008 4:19 pm Post subject:

You could also use it if you created your image with gtk.image_new_from_pixmap
C
http://library.gnome.org/devel/gtk/stable/GtkImage.html#gtk-image-new-from-pixmap
PyGTK
http://pygtk.org/docs/pygtk/class-gtkimage.html#function-gtk--image-new-from-pixmap

nadavvin · Familiar Face Joined: 06 Dec 2007 Posts: 19

I don't understand how to do it.

gtk.gdk.Drawable.draw_pixbuf is on;y render part of the pixbuf.

I guess it render to pixmap, but to where and how do I get it?

Why should I use get_pixmap() if it work only if the image create from pixmap? I can take the orginal pixmap

dreblen · Posted: Wed Dec 03, 2008 12:23 am Post subject:

nadavvin · Familiar Face Joined: 06 Dec 2007 Posts: 19

nadavvin · Familiar Face Joined: 06 Dec 2007 Posts: 19

dreblen · Posted: Wed Dec 03, 2008 6:36 pm Post subject:

nadavvin · Familiar Face Joined: 06 Dec 2007 Posts: 19

nadavvin · Familiar Face Joined: 06 Dec 2007 Posts: 19

I made it :P .

I found the method "render_pixmap_and_mask":
http://www.pygtk.org/docs/pygtk/class-gdkpixbuf.html#method-gdkpixbuf--render-pixmap-and-mask

Thanks for your help.