I'm using set_from_file(), and it kind of works. The problem is that the
image is updated only second time event handler that replots and invokes
set_from_file() is triggered. I double checked replot occurs every time
event is caught, when I open the image file manually it contains the
updated plot.
I added queue_redraw() after set_from_file(), but it didn't help.
This is what I have there now:
def apply_equations(self, widget, data):
x_equation = data[0].get_text()
y_equation = data[1].get_text()
image = data[2]
print "Equations: x=%s, y=%s" % (x_equation, y_equation)
expression = x_equation + "," + y_equation
plotter.set_expression(expression)
plotter.plot()
image.set_from_file("test.png")
image.queue_draw()
self.equations_apply.connect("clicked", self.apply_equations,
(self.x_expression, self.y_expression, self.image) )
On 01/28/2013 10:02 PM, Niklas Koep wrote:
If you're updating your gtk.Image contents via its set_from_file()
method you don't need to request an update at all -- it happens
automatically. Generally speaking, however, gtk.Widget implements a
queue_draw() method which can be used to invalidate the entire visible
area of a widget which in turn causes it to be redrawn. For your use
this doesn't seem to be required though. Hope this helps.
2013/1/27 Daniil Baturin <dan...@baturin.org <mailto:dan...@baturin.org>>
Hi,
What is the proper way to reload gtk.Image contents?
I want to make a simple educational gnuplot frontend that would
allow playing with parametric curve coefficients by using spin
buttons, expressions with substituted constants will be passed to
gnuplot and generated png displayed in a gtk.Image. But I'm not
sure how to request update of displayed image if the image has
changed.
--
#!/usr/bin/env perl
@a=split(//, "daniil @ baturin . org" );# Daniil Baturin
@b=split(//,q/Px%!+o0Q6lh*7dp$.@8#%|y{/);while($i<24){$_.=
chr((ord(@b[$i])-ord(@a[$i])+62)%94+32);$i++};print"$_\n"#
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--
#!/usr/bin/env perl
@a=split(//, "daniil @ baturin . org" );# Daniil Baturin
@b=split(//,q/Px%!+o0Q6lh*7dp$.@8#%|y{/);while($i<24){$_.=
chr((ord(@b[$i])-ord(@a[$i])+62)%94+32);$i++};print"$_\n"#
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