Let's take a look at another way of packing - Tables. These can be extremely useful in certain situations.
Using tables, we create a grid that we can place widgets in. The widgets may take up as many spaces as we specify.
The first thing to look at, of course, is the
table = gtk.Table(
The first argument is the number of rows to make in the table, while the second, obviously, is the number of columns.
homogeneous argument has to do with
how the table's boxes are sized. If
True, the table boxes are resized to the size of the
largest widget in the table. If
False, the size of a table boxes is dictated by the
tallest widget in its same row, and the widest widget in its column.
The rows and columns are laid out from 0 to n, where n was the number
specified in the call to
gtk.Table(). So, if you
specify rows = 2 and columns = 2, the layout would look something like
0 1 2 0+----------+----------+ | | | 1+----------+----------+ | | | 2+----------+----------+
Note that the coordinate system starts in the upper left hand corner. To place a widget into a box, use the following method:
The table instance is the table you created with
gtk.Table(). The first parameter ("child") is the
widget you wish to place in the table.
bottom_attach arguments specify where to place the
widget, and how many boxes to use. If you want a button in the lower right
table entry of our 2x2 table, and want it to fill that entry ONLY,
left_attach would be = 1,
right_attach = 2,
bottom_attach = 2.
Now, if you wanted a widget to take up the whole top row of our
2x2 table, you'd use
left_attach = 0,
right_attach = 2,
bottom_attach = 1.
yoptions are used to specify packing options and may
be bitwise OR'ed together to allow multiple options.
These options are:
|If the table cell is larger than the widget, and
|If the table widget was allocated less space then was
requested (usually by the user resizing the window), then the widgets would
normally just be pushed off the bottom of the window and disappear. If
|This will cause the table cell to expand to use up any remaining space allocated to the table.|
Padding is just like in boxes, creating a clear area around the widget specified in pixels.
We also have
set_col_spacing() methods. These add spacing
between the rows at the specified row or column.
Note that for columns, the space goes to the right of the column, and for rows, the space goes below the row.
You can also set a consistent spacing of all rows and/or columns with:
Note that with these calls, the last row and last column do not get any spacing.