A resize_gesture allows for resizing objects by dragging
the corners or sides (for constrained resize) of the objects. While
dragging, the direction/constraints are indicated by showing an
appropriate cursor.
The resize_gesture only responds to events the happen close the the
edges/corners of the graphical. The class-variables
resize_gesture.margin_fraction and resize_gesture.margin_width
determine these areas: the gesture responds if the down event occurs
between the edge and 1/margin_fraction of the size or margin_width
(whoever is the least).
Bugs: Does not deal properly with negative areas.
- See also
- class resize_outline_gesture
- resize_gesture <->
h_mode: {left,keep,right}
- How the graphical is resized horizontally. Values are:
| left | Drag the left edge |
| keep | Change neither edge |
| right | Drag the right edge |
This value is set by resize_gesture->verify
and used by resize_gesture->initiate
and resize_gesture->drag.
- See also
- resize_gesture
->verify
- resize_gesture <->
max_size: size*
- Size that defines the maximum size the graphical may have. If it depends
on the circumstances, it may be set in resize_gesture
->verify
or resize_gesture->initiate.
If @nil,
there is no maximum size.
Defaults: @nil
- resize_gesture <->
min_size: size*
- Size that defines the minimal size the graphical should have. If it
depends on the circumstances, it may be set in resize_gesture
->verify
or resize_gesture->initiate.
If @nil,
there is no minimum size.
Defaults: Resource defined.
- See also
- resize_gesture
->verify
- resize_gesture <->
v_mode: {top,keep,bottom}
- How the graphical is resized vertically. Values are:
| top | Drag the top edge |
| keep | Change neither edge |
| bottom | Drag the bottom edge |
This value is set by resize_gesture->verify
and used by resize_gesture->initiate
and resize_gesture->drag.
- See also
- resize_gesture
->verify
- resize_gesture ->drag: event
- Resize the graphical according the resize_gesture
<-v_mode
and the resize_gesture<-h_mode
determined upon starting the gesture.
- resize_gesture ->initiate: event
- Set the cursor to indicate which edges are going to be changed and moves
the pointer to be precisely on those sides.
- resize_gesture ->terminate: event
- Equivalent to resize_gesture
->drag.
- resize_gesture ->verify: event
- The resize_gesture
->verify
method determines the resize_gesture<->v_mode
and resize_gesture<->h_mode
attributes. The gesture changes those sides where the caret is closer
that the maximum of
{Width/Height} / margin_factor AND margin_width
Both resize_gesture.margin_factor and resize_gesture.margin_width
are Defauls. resize_gesture->verify
succeeds if at least one of resize_gesture<->v_mode
and
resize_gesture<->h_mode
is not set to keep.
- See also
- - resize_gesture
-min_size
- resize_gesture-v_mode
- resize_gesture-h_mode
