A frame that constrains its child to a particular aspect ratio
The <gtk-aspect-frame> is useful when you want pack a widget so that it
can resize but always retains the same aspect ratio. For instance, one might be
drawing a small preview of a larger image. <gtk-aspect-frame> derives
from <gtk-frame>, so it can draw a label and a frame around the child.
The frame will be "shrink-wrapped" to the size of the child.
Derives from
<gtk-frame>.This class defines the following slots:
xalign- X alignment of the child
yalign- Y alignment of the child
ratio- Aspect ratio if obey_child is FALSE
obey-child- Force aspect ratio to match that of the frame's child
mchars) (xalign float) (yalign float) (ratio float) (obey_child bool) ⇒ (ret <gtk-widget>)Create a new
<gtk-aspect-frame>.
- label
- Label text.
- xalign
- Horizontal alignment of the child within the allocation of the
<gtk-aspect-frame>. This ranges from 0.0 (left aligned) to 1.0 (right aligned)- yalign
- Vertical alignment of the child within the allocation of the
<gtk-aspect-frame>. This ranges from 0.0 (left aligned) to 1.0 (right aligned)- ratio
- The desired aspect ratio.
- obey-child
- If ‘
#t’, ratio is ignored, and the aspect ratio is taken from the requistion of the child.- ret
- the new
<gtk-aspect-frame>.
<gtk-aspect-frame>) (xalign float) (yalign float) (ratio float) (obey_child bool)Set parameters for an existing
<gtk-aspect-frame>.
- aspect-frame
- a
<gtk-aspect-frame>- xalign
- Horizontal alignment of the child within the allocation of the
<gtk-aspect-frame>. This ranges from 0.0 (left aligned) to 1.0 (right aligned)- yalign
- Vertical alignment of the child within the allocation of the
<gtk-aspect-frame>. This ranges from 0.0 (left aligned) to 1.0 (right aligned)- ratio
- The desired aspect ratio.
- obey-child
- If ‘
#t’, ratio is ignored, and the aspect ratio is taken from the requistion of the child.