-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Sun, Dec 10, 2006 at 06:43:07PM -0800, Erik Walter wrote: > I'm trying to do a fairly simple thing and I haven't been able to > find any answers (that work) to my problem. > > I just need to find the mouse (pointer) coordinates relative to a GDK > image's origin (i.e. the pixel that would be set via a > gdk_image_put_pixel() that corresponds to the pointer location). > > the GDK Image I have is in a GtkImage, inside a GtkScrolledWindow > (i.e. via gtk_scrolled_add_with_viewport()) and that's inside a > GtkEventBox and that's inside a GtkWindow. > > So basically.... > > GDKImage > GtkImage > GtkScrolledWindow > GtkEventBox > GtkWindow > > Both gdk_window_get_pointer() and gtk_widget_get_pointer() always > return coordinates relative to the base window. But if you resize > the window to be larger than the image, it centers it in the window > and the coordinates are wrong. > > The only way I can think to deal with this is REALLY hacky, > basically attempting to "predict" where the image is based on the > assumption that it's centered in the main window's dimensions and > doing some guesswork. But that seems like the wrong way to approach > this.
Would this help (warning: untested): GtkImage *img; struct GtkAllocation alloc; gint imgx, imgy; ... imgx = GTK_WIDGET(img)->allocation.x; imgy = GTK_WIDGET(img)->allocation.y; (or whatever equivalent code). I would assume that the GtkImage's size matches the size of the contained GdkImage (at least if you set its padding to zero). Regards - -- tomás -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (GNU/Linux) iD8DBQFFf44+Bcgs9XrR2kYRAhjLAJ9vBRrsGJjHXN6oZv0u8AjfDRj72wCfQNt+ RUu6vvsSuM6Kz4AWcM+rYx8= =+kQF -----END PGP SIGNATURE----- _______________________________________________ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
