GtkHScale: Jump-to-position by left-click instead of middle-click?

[Phong Cao]

Hello everybody,

I am new to GTK. I am trying to develop a small music player using GTK 
GStreamer. I use GtkHScale for the progress bar, which is responsible for
updating the track progress  allow user to move to different time position
in the track.

Everything works fine until now, except that I can not use left-click
button to snap (or jump) to random position in the GtkHScale. Instead, I
have to either drag or right-mouse-click. I have tried to solve this
problem for several days and still can not figure out how to use left-click
to jump to different position in the GtkHScale. I have searched through the
GTK+ mail archive  reference but found no place talking about this.

Does anybody here know how to implement this functionality for GtkHScale?
If so I hope you can give me a hint.

Thank you and have a good day!

-- 
Phong V. Cao
phn...@gmail.com
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Re: GtkHScale: Jump-to-position by left-click instead of middle-click?

[David Nečas]

Was it really necessary to cross-post this question to *four* mailing
lists?

On Sat, Nov 19, 2011 at 07:55:59AM -0500, Phong Cao wrote:
 I use GtkHScale for the progress bar, which is responsible for
 updating the track progress  allow user to move to different time position
 in the track.
 
 Everything works fine until now, except that I can not use left-click
 button to snap (or jump) to random position in the GtkHScale. Instead, I
 have to either drag or right-mouse-click.

The following is a kluge, but I suppose if you want the first button to
invoke the same response as the middle button it should be all right
(written in Python for brevity):

from gi.repository import Gtk

def button1to2(scale, event):
if event.button == 1:
event.button = 2
return False

adj = Gtk.Adjustment.new(0.0, 0.0, 1.0, 0.001, 0.01, 0)
scale = Gtk.Scale.new(Gtk.Orientation.HORIZONTAL, adj)
scale.set_round_digits(3)
scale.connect(button-press-event, button1to2)
scale.connect(button-release-event, button1to2)

window = Gtk.Window()
window.add(scale)
window.set_default_size(400, -1)
window.show_all()
window.connect(destroy, Gtk.main_quit)
Gtk.main()


Yeti

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