Re: [pygtk] Help with box layout
| -vbox.pack_start(self.make_shot_box(), False)
| + vbox.pack_start(self.make_shot_box(), False, False)
Isn't the third parameter to pack_start ignored anyway if the second one
is False?
No! the prototype is :
def pack_start(child, expand=True, fill=True, padding=0)
So to set 'fill' to False you need at least 3 arguments.
I don't understand.
http://www.pygtk.org/pygtk2tutorial/sec-DetailsOfBoxes.html:
The fill argument to the pack methods control whether the extra space
is allocated to the objects themselves (True), or as extra padding in
the box around these objects (False). It only has an effect if the
expand argument is also True.
In the above line you set expand to False, so you don't have to provide
a value for fill, IMO.
| def make_shot_box(self):
| -box = gtk.HBox(True, 10)
| + box = gtk.HBox(False, 10)
This seems to get rid of the spacing between the label and spin
button -- but why?
It doesn't. It just sets the spacing of the widgets.
The code box = gtk.HBox(spacing = 10) would do the same thing.
The spacing is the same in both versions, you changed the 'homogenous'
parameter.
| + box.pack_start(gtk.Label(''), True, True, 0)
What is this for?
It (and its mate further along) are there to use up the available
space in 'box' to make the other widgets as small as possible, and to
thereby cause them to be centralized.
Uh, I think I see. So the only way to center something in a box is to
add an empty element on both sides with expand=True?
As another thing, there is an easier way to create the buttons in the
make_button_box() function.
for (name,number) in [
('INIT',1),
('PULSE ON',2),
('STORE',3),
('ANALYSIS',4)] :
button = gtk.Button(name)
button.connect('clicked', self.blub, number)
box.pack_start(button, True, True)
The buttons of course call different functions in the real code, this
was just to simplify the example.
Best,
-Nikolaus
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Re: [pygtk] Help with box layout
On 15-03-10 15:30, Nikolaus Rath wrote:
| + box.pack_start(gtk.Label(''), True, True, 0)
What is this for?
It (and its mate further along) are there to use up the available
space in 'box' to make the other widgets as small as possible, and to
thereby cause them to be centralized.
Uh, I think I see. So the only way to center something in a box is to
add an empty element on both sides with expand=True?
Try using a gtk.HButtonBox instead (see the reference manual for info).
This is excatly what you need to layout buttons.
Cheers,
Timo
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Re: [pygtk] Help with box layout
Nikolaus Rath wrote:
| -vbox.pack_start(self.make_shot_box(), False)
| + vbox.pack_start(self.make_shot_box(), False, False)
Isn't the third parameter to pack_start ignored anyway if the second one
is False?
No! the prototype is :
def pack_start(child, expand=True, fill=True, padding=0)
So to set 'fill' to False you need at least 3 arguments.
I don't understand.
http://www.pygtk.org/pygtk2tutorial/sec-DetailsOfBoxes.html:
The fill argument to the pack methods control whether the extra space
is allocated to the objects themselves (True), or as extra padding in
the box around these objects (False). It only has an effect if the
expand argument is also True.
In the above line you set expand to False, so you don't have to provide
a value for fill, IMO.
That appears to be the fact. But I still prefer to specify both
'expand' and 'fill'.
| def make_shot_box(self):
| -box = gtk.HBox(True, 10)
| + box = gtk.HBox(False, 10)
This seems to get rid of the spacing between the label and spin
button -- but why?
It doesn't. It just sets the spacing of the widgets.
The code box = gtk.HBox(spacing = 10) would do the same thing.
The spacing is the same in both versions, you changed the 'homogenous'
parameter.
No! The default is for 'homogenous' is False. So technically you
don't need to specify it.
| + box.pack_start(gtk.Label(''), True, True, 0)
What is this for?
It (and its mate further along) are there to use up the available
space in 'box' to make the other widgets as small as possible, and to
thereby cause them to be centralized.
Uh, I think I see. So the only way to center something in a box is to
add an empty element on both sides with expand=True?
It is the only way I have found.
As another thing, there is an easier way to create the buttons in the
make_button_box() function.
for (name,number) in [
('INIT',1),
('PULSE ON',2),
('STORE',3),
('ANALYSIS',4)] :
button = gtk.Button(name)
button.connect('clicked', self.blub, number)
box.pack_start(button, True, True)
The buttons of course call different functions in the real code, this
was just to simplify the example.
Ok! but you could put in a function like.
for (name,function) in [('INIT',self.on_init_clicked),
('PULSE ON',self.on_pulse_clicked)] :
button = gtk.Button(name)
button.connect('clicked', function)
box.pack_start(button, True, True)
Its just a coding preference, instead of have many pieces of code
almost the same.
Best,
-Nikolaus
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Re: [pygtk] Help with box layout
Nikolaus Rath wrote:
Neil Dugan py...@butterflystitches.com.au writes:
Nikolaus Rath wrote:
Hello,
For some reason I'm just not able to figure out how use the packing
parameters in the right way to get the layout that I want.
Can someone help me out? What I want is this:
- In the first row, the label and spin button should be centered and
right next to each other (no space in between).
- In the second row, all buttons should have the same size with 10px
spacing between them. The set of buttons should again be centered.
- In the third line, the one button should be just as large as the 4
buttons in the previous line (and also centered).
- The text area should fill the rest of the window
Here is the code that I am using right now:
I don't know if this is the most effect way of doing what you want.
fixed a couple of minor other problems the lambda for the
'delete_event' need arguments and the Control.blub() function need
some as well.
That already looks almost perfect, thank you so much!
(The only problem left is that the buttons grow when the window is
resized and that the last button is not as wide as the buttons in the
next-to-last line all together).
If you don't want to have the button grow you will need to put another
HBox() around the current HBox() and add some empty labels each side
to center it in the window.
All the widgets are the same size on my layout.
But could you comment on a couple of your changes? I'd very much like to
understand what I was doing wrong, so that next time I don't have to ask
but can create the layout myself...
,
| $ diff -u -w box.py box_new.py
| --- box.py 2010-03-13 14:06:12.020104562 -0500
| +++ blub.py 2010-03-13 10:36:00.940105089 -0500
| @@ -10,70 +10,69 @@
|
| def __init__(self):
| self.window = gtk.Window(gtk.WINDOW_TOPLEVEL)
| -self.window.connect(delete_event, lambda: False)
| + self.window.connect(delete_event, lambda x,y: False)
| self.window.connect(destroy, gtk.main_quit)
| self.window.set_border_width(10)
| self.window.set_title('Dispatch Control')
|
| vbox = gtk.VBox(False, 10)
| -vbox.pack_start(self.make_shot_box(), False)
| + vbox.pack_start(self.make_shot_box(), False, False)
Isn't the third parameter to pack_start ignored anyway if the second one
is False?
No! the prototype is :
def pack_start(child, expand=True, fill=True, padding=0)
So to set 'fill' to False you need at least 3 arguments. I find it
easier to understand the code if I as a rule set at least the first 3
arguments.
| vbox.pack_start(self.make_button_box(), False)
| vbox.pack_start(self.make_textarea(), True, True)
| -vbox.show()
| self.window.add(vbox)
| -self.window.show()
| + self.window.show_all()
|
I guess the removal of the .show() calls in favor of the
window.show_all() call does not have an effect on the layout, right?
Yes! I prefer just using a show_all(), unless I want a particular
widget not to be shown initially.
| def make_shot_box(self):
| -box = gtk.HBox(True, 10)
| + box = gtk.HBox(False, 10)
This seems to get rid of the spacing between the label and spin
button -- but why?
It doesn't. It just sets the spacing of the widgets.
The code box = gtk.HBox(spacing = 10) would do the same thing.
|
| + box.pack_start(gtk.Label(''), True, True, 0)
What is this for?
It (and its mate further along) are there to use up the available
space in 'box' to make the other widgets as small as possible, and to
thereby cause them to be centralized.
| label = gtk.Label(Create shot:)
| label.set_justify(gtk.JUSTIFY_RIGHT)
This line does nothing. The label is minimum sized so justification
is meaningless.
| label.show()
This line also does nothing (now).
| box.pack_start(label, False, False, 0)
This could be replaced by :
box.pack_start(gtk.Label(Create shot:), False, False, 0)
|
| cur_shot = 42
| -self.shotno = gtk.Adjustment(value=cur_shot+1, lower=1,
upper=cur_shot+1,
| + self.shotno = gtk.Adjustment(value=cur_shot+1, lower=1,
| + upper=cur_shot+1,
| step_incr=1)
| button = gtk.SpinButton(adjustment=self.shotno, digits=0)
| button.set_numeric(True)
| -button.show()
| box.pack_start(button, False, False, 0)
| + box.pack_start(gtk.Label(''), True, True, 0)
Again, why the empty label?
See previous note.
Thanks!
-Nikolaus
As another thing, there is an easier way to create the buttons in the
make_button_box() function.
for (name,number) in [
('INIT',1),
('PULSE ON',2),
('STORE',3),
Re: [pygtk] Help with box layout
Neil Dugan py...@butterflystitches.com.au writes:
Nikolaus Rath wrote:
Hello,
For some reason I'm just not able to figure out how use the packing
parameters in the right way to get the layout that I want.
Can someone help me out? What I want is this:
- In the first row, the label and spin button should be centered and
right next to each other (no space in between).
- In the second row, all buttons should have the same size with 10px
spacing between them. The set of buttons should again be centered.
- In the third line, the one button should be just as large as the 4
buttons in the previous line (and also centered).
- The text area should fill the rest of the window
Here is the code that I am using right now:
I don't know if this is the most effect way of doing what you want.
fixed a couple of minor other problems the lambda for the
'delete_event' need arguments and the Control.blub() function need
some as well.
That already looks almost perfect, thank you so much!
(The only problem left is that the buttons grow when the window is
resized and that the last button is not as wide as the buttons in the
next-to-last line all together).
But could you comment on a couple of your changes? I'd very much like to
understand what I was doing wrong, so that next time I don't have to ask
but can create the layout myself...
,
| $ diff -u -w box.py box_new.py
| --- box.py2010-03-13 14:06:12.020104562 -0500
| +++ blub.py 2010-03-13 10:36:00.940105089 -0500
| @@ -10,70 +10,69 @@
|
| def __init__(self):
| self.window = gtk.Window(gtk.WINDOW_TOPLEVEL)
| -self.window.connect(delete_event, lambda: False)
| + self.window.connect(delete_event, lambda x,y: False)
| self.window.connect(destroy, gtk.main_quit)
| self.window.set_border_width(10)
| self.window.set_title('Dispatch Control')
|
| vbox = gtk.VBox(False, 10)
| -vbox.pack_start(self.make_shot_box(), False)
| + vbox.pack_start(self.make_shot_box(), False, False)
Isn't the third parameter to pack_start ignored anyway if the second one
is False?
| vbox.pack_start(self.make_button_box(), False)
| vbox.pack_start(self.make_textarea(), True, True)
| -vbox.show()
| self.window.add(vbox)
| -self.window.show()
| + self.window.show_all()
|
I guess the removal of the .show() calls in favor of the
window.show_all() call does not have an effect on the layout, right?
| def make_shot_box(self):
| -box = gtk.HBox(True, 10)
| + box = gtk.HBox(False, 10)
This seems to get rid of the spacing between the label and spin
button -- but why?
|
| + box.pack_start(gtk.Label(''), True, True, 0)
What is this for?
| label = gtk.Label(Create shot:)
| label.set_justify(gtk.JUSTIFY_RIGHT)
| label.show()
| box.pack_start(label, False, False, 0)
|
| cur_shot = 42
| -self.shotno = gtk.Adjustment(value=cur_shot+1, lower=1,
upper=cur_shot+1,
| + self.shotno = gtk.Adjustment(value=cur_shot+1, lower=1,
| + upper=cur_shot+1,
| step_incr=1)
| button = gtk.SpinButton(adjustment=self.shotno, digits=0)
| button.set_numeric(True)
| -button.show()
| box.pack_start(button, False, False, 0)
| + box.pack_start(gtk.Label(''), True, True, 0)
Again, why the empty label?
Thanks!
-Nikolaus
--
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Re: [pygtk] Help with box layout
On 13/03/10 21:25, Nikolaus Rath wrote:
Neil Dugan py...@butterflystitches.com.au writes:
Nikolaus Rath wrote:
Hello,
For some reason I'm just not able to figure out how use the packing
parameters in the right way to get the layout that I want.
Can someone help me out? What I want is this:
- In the first row, the label and spin button should be centered and
right next to each other (no space in between).
- In the second row, all buttons should have the same size with 10px
spacing between them. The set of buttons should again be centered.
- In the third line, the one button should be just as large as the 4
buttons in the previous line (and also centered).
- The text area should fill the rest of the window
Here is the code that I am using right now:
I don't know if this is the most effect way of doing what you want.
fixed a couple of minor other problems the lambda for the
'delete_event' need arguments and the Control.blub() function need
some as well.
That already looks almost perfect, thank you so much!
(The only problem left is that the buttons grow when the window is
resized and that the last button is not as wide as the buttons in the
next-to-last line all together).
But could you comment on a couple of your changes? I'd very much like to
understand what I was doing wrong, so that next time I don't have to ask
but can create the layout myself...
,
| $ diff -u -w box.py box_new.py
| --- box.py 2010-03-13 14:06:12.020104562 -0500
| +++ blub.py 2010-03-13 10:36:00.940105089 -0500
| @@ -10,70 +10,69 @@
|
| def __init__(self):
| self.window = gtk.Window(gtk.WINDOW_TOPLEVEL)
| -self.window.connect("delete_event", lambda: False)
| + self.window.connect("delete_event", lambda x,y: False)
| self.window.connect("destroy", gtk.main_quit)
| self.window.set_border_width(10)
| self.window.set_title('Dispatch Control')
|
| vbox = gtk.VBox(False, 10)
| -vbox.pack_start(self.make_shot_box(), False)
| + vbox.pack_start(self.make_shot_box(), False, False)
Isn't the third parameter to pack_start ignored anyway if the second one
is False?
| vbox.pack_start(self.make_button_box(), False)
| vbox.pack_start(self.make_textarea(), True, True)
| -vbox.show()
| self.window.add(vbox)
| -self.window.show()
| + self.window.show_all()
|
I guess the removal of the .show() calls in favor of the
window.show_all() call does not have an effect on the layout, right?
| def make_shot_box(self):
| -box = gtk.HBox(True, 10)
| + box = gtk.HBox(False, 10)
This seems to get rid of the spacing between the label and spin
button -- but why?
|
| + box.pack_start(gtk.Label(''), True, True, 0)
What is this for?
| label = gtk.Label("Create shot:")
| label.set_justify(gtk.JUSTIFY_RIGHT)
| label.show()
| box.pack_start(label, False, False, 0)
|
| cur_shot = 42
| -self.shotno = gtk.Adjustment(value=cur_shot+1, lower=1, upper=cur_shot+1,
| + self.shotno = gtk.Adjustment(value=cur_shot+1, lower=1,
| + upper=cur_shot+1,
| step_incr=1)
| button = gtk.SpinButton(adjustment=self.shotno, digits=0)
| button.set_numeric(True)
| -button.show()
| box.pack_start(button, False, False, 0)
| + box.pack_start(gtk.Label(''), True, True, 0)
Again, why the empty label?
Thanks!
-Nikolaus
#box.pack_start(gtk.Label(''), True, True)
button = gtk.Button("Full Cycle")
button.connect('clicked', self.blub, 5)
box.pack_start(button, True, True)
#box.pack_start(gtk.Label(''), True, True)
Should give you what you want :-)
--
Regards
Paul
Malherbe
+27
(0) 21 6711866
+27
(0) 82 9005260
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Re: [pygtk] Help with box layout
Nikolaus Rath wrote:
Hello,
For some reason I'm just not able to figure out how use the packing
parameters in the right way to get the layout that I want.
Can someone help me out? What I want is this:
- In the first row, the label and spin button should be centered and
right next to each other (no space in between).
- In the second row, all buttons should have the same size with 10px
spacing between them. The set of buttons should again be centered.
- In the third line, the one button should be just as large as the 4
buttons in the previous line (and also centered).
- The text area should fill the rest of the window
Here is the code that I am using right now:
I don't know if this is the most effect way of doing what you want.
fixed a couple of minor other problems the lambda for the
'delete_event' need arguments and the Control.blub() function need
some as well.
#!/usr/bin/env python
from __future__ import print_function, absolute_import
import pygtk
pygtk.require('2.0')
import gtk
class Control(object):
def __init__(self):
self.window = gtk.Window(gtk.WINDOW_TOPLEVEL)
self.window.connect(delete_event, lambda x,y: False)
self.window.connect(destroy, gtk.main_quit)
self.window.set_border_width(10)
self.window.set_title('Dispatch Control')
vbox = gtk.VBox(False, 10)
vbox.pack_start(self.make_shot_box(), False, False)
vbox.pack_start(self.make_button_box(), False)
vbox.pack_start(self.make_textarea(), True, True)
self.window.add(vbox)
self.window.show_all()
def make_shot_box(self):
box = gtk.HBox(False, 10)
box.pack_start(gtk.Label(''), True, True, 0)
label = gtk.Label(Create shot:)
label.set_justify(gtk.JUSTIFY_RIGHT)
label.show()
box.pack_start(label, False, False, 0)
cur_shot = 42
self.shotno = gtk.Adjustment(value=cur_shot+1, lower=1,
upper=cur_shot+1,
step_incr=1)
button = gtk.SpinButton(adjustment=self.shotno, digits=0)
button.set_numeric(True)
box.pack_start(button, False, False, 0)
box.pack_start(gtk.Label(''), True, True, 0)
return box
def make_button_box(self):
box = gtk.HBox(True, 10)
button = gtk.Button(INIT)
button.connect('clicked', self.blub, 1)
box.pack_start(button, True, True, 0)
button = gtk.Button(PULSE ON)
button.connect('clicked', self.blub, 2)
box.pack_start(button, True, True, 0)
button = gtk.Button(STORE)
button.connect('clicked', self.blub, 3)
box.pack_start(button, True, True, 0)
button = gtk.Button(ANALYSIS)
button.connect('clicked', self.blub, 4)
box.pack_start(button, True, True, 0)
vbox = gtk.VBox(True, 10)
vbox.pack_start(box, False, False)
box = gtk.HBox()
vbox.pack_start(box, False, False)
box.pack_start(gtk.Label(''), True, True)
button = gtk.Button(Full Cycle)
button.connect('clicked', self.blub, 5)
box.pack_start(button, False, False)
box.pack_start(gtk.Label(''), True, True)
return vbox
def make_textarea(self):
textview = gtk.TextView()
textview.set_editable(True)
textview.set_wrap_mode(gtk.WRAP_WORD)
self.comment = textview.get_buffer()
sw = gtk.ScrolledWindow()
sw.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)
sw.set_border_width(5)
sw.add(textview)
frame = gtk.Frame('Shot Comment')
frame.add(sw)
return frame
def blub(self, widget, number):
print('Click! %d' % (number))
if __name__ == '__main__':
control = Control()
gtk.main()
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