<page xmlns="http://projectmallard.org/1.0/" xmlns:its="http://www.w3.org/2005/11/its" xmlns:xi="http://www.w3.org/2001/XInclude" type="guide" style="task" id="grid.py" xml:lang="pt-BR">

  <info>

    <title type="text">Grid (Python)</title>

    <link type="guide" xref="beginner.py#layout"/>

    <link type="seealso" xref="label.py"/>

    <link type="next" xref="separator.py"/>

    <revision version="0.2" date="2012-08-01" status="stub"/>

    <credit type="author copyright">

      <name>Tiffany Antopolski</name>

      <email its:translate="no">tiffany.antopolski@gmail.com</email>

      <years>2012</years>

    </credit>

    <credit type="author copyright">

      <name>Marta Maria Casetti</name>

      <email its:translate="no">mmcasetti@gmail.com</email>

      <years>2012</years>

    </credit>

    <desc>Pack widgets in rows and columns</desc>

    <mal:credit xmlns:mal="http://projectmallard.org/1.0/" type="translator copyright">

      <mal:name>Rafael Ferreira</mal:name>

      <mal:email>rafael.f.f1@gmail.com</mal:email>

      <mal:years>2013</mal:years>

    </mal:credit>

  </info>

  <title>Grid</title>

  <media type="image" mime="image/png" src="media/grid_simple.png"/>

  
Some labels in a grid.

  <links type="section"/>

  <section id="code">

    <title>Code used to generate this example</title>

    from gi.repository import Gtk

import sys

class MyWindow(Gtk.ApplicationWindow):

    def __init__(self, app):

        Gtk.Window.__init__(self, title="Grid Example", application=app)

        # three labels

        label_top_left = Gtk.Label(label="This is Top Left")

        label_top_right = Gtk.Label(label="This is Top Right")

        label_bottom = Gtk.Label(label="This is Bottom")

        # a grid

        grid = Gtk.Grid()

        # some space between the columns of the grid

        grid.set_column_spacing(20)

        # in the grid:

        # attach the first label in the top left corner

        grid.attach(label_top_left, 0, 0, 1, 1)

        # attach the second label

        grid.attach(label_top_right, 1, 0, 1, 1)

        # attach the third label below the first label

        grid.attach_next_to(

            label_bottom, label_top_left, Gtk.PositionType.BOTTOM, 2, 1)

        # add the grid to the window

        self.add(grid)

class MyApplication(Gtk.Application):

    def __init__(self):

        Gtk.Application.__init__(self)

    def do_activate(self):

        win = MyWindow(self)

        win.show_all()

app = MyApplication()

exit_status = app.run(sys.argv)

sys.exit(exit_status)

  </section>

  <section id="methods">

    <title>Useful methods for a Grid widget</title>

    <list>

      <item>
To attach a widget child in position left, top in a slot of given width, height use attach(child, top, left, width, height). If a widget sibling is already in place, we can also use attach_next_to(child, sibling, side, width, height), where side is one of Gtk.PositionType.LEFT, Gtk.PositionType.RIGHT, Gtk.PositionType.TOP, Gtk.PositionType.BOTTOM.
</item>

      <item>
insert_row(position) and insert_column(position) do exactly what they say; children which are attached at or below this position are moved one row down, and children which span across this position are grown to span the new row. insert_next_to(sibling, side) inserts a row or column at the specified position. The new row or column is placed next to sibling, on the side determined by side; if side is Gtk.PositionType.TOP or Gtk.PositionType.BOTTOM, a row is inserted, if side is Gtk.PositionType.LEFT or Gtk.PositionType.RIGHT, a column is inserted.
</item>

      <item>
set_row_homogeneous(True) and set_column_homogeneous(True) ensure that (respectively) every row or every column has the same width or height.
</item>

      <item>
set_row_spacing(spacing) and set_column_spacing(spacing) force a spacing between (respectively) rows or columns. The value of spacing can be between 0, which is the default value, and 32767.
</item>

    </list>

  </section>

  <section id="references">

    <title>API References</title>

    
In this sample we used the following:

    <list>

      <item>
<link href="http://developer.gnome.org/gtk3/unstable/GtkApplication.html">GtkApplication</link>
</item>

      <item>
<link href="http://developer.gnome.org/gtk3/unstable/GtkApplicationWindow.html">GtkApplicationWindow</link>
</item>

      <item>
<link href="http://developer.gnome.org/gtk3/unstable/GtkLabel.html">GtkLabel</link>
</item>

      <item>
<link href="http://developer.gnome.org/gtk3/unstable/GtkImage.html">GtkImage</link>
</item>

      <item>
<link href="http://developer.gnome.org/gtk3/unstable/GtkGrid.html">GtkGrid</link>
</item>

    </list>

  </section>

</page>