Hello Chris,
In M9 VWP Page Navigation did not include the Grid Dot background. Per
a earlier recommendation, I planned to added it back in and have just
done so. I used FlowScene as my example as well.
Regards,
Joelle
Chris Palmer wrote:
HI David!
Thank you very much for the help. This answered a few more questions...
Chris
David Kaspar wrote:
Hi Chris,
For painting dots grid you can:
1) Use a texture paint that you can use set as a background of your
scene. This is fastest implementation but it does not allow to change
the grid-size. For details, see a first few lines in:
mobility/designer2/flow/src/org/netbeans/modules/vmd/api/flow/visual/FlowScene.java
2) Extend a Scene class you are using and override its paint method and
draw your dots there. Be aware that painting an 2d-array dots could be
very slow when you have over 1000+ dots drawn on the scene.
Regarding MoveStrategies:
Unfortunately I do not have a test for it but here it is how it should work:
private int gridWidth = 32;
private int gridHeight = 32;
WidgetAction moveAction = ActionFactory.createMoveAction (new
MoveStrategy () {
public Point locationSuggested (Widget widget, Point
originalLocation, Point suggestedLocation) {
return new Point (suggestedLocation.x - suggestedLocation.x %
gridWidth, suggestedLocation.y - suggestedLocation.y % gridHeight);
}
}, null);
myWidget.getActions ().addAction (moveAction);
// now the myWidget could be moved on the scene and its position will be
snapped to the grid
If you want to, you can look at the "visualweb" code but I think they
are not using grid-dots feature (I assume your are talking
"web/jsf/navigator" module).
Regards,
David
Chris Palmer wrote:
Hi David!
All this helps a lot thank you! Besides the move strategies outlined.
Visually drawing the dots on the scene is quite important as well. I
was wondering if there was an example or if I should look at the
visual web pack code.....
Chris
David Kaspar wrote:
Hi Chris,
It really depends on what exactly should be the behaviour of
"grid-with-dots" functionality.
1) If you want to have widgets to align to a grid during their movement
then:
a) use a MoveAction created with your own MoveStrategy where you
calculate with your grid-size. For example see:
graph/lib/src/org/netbeans/modules/visual/action/SnapToGridMoveStrategy.java
2) If you want Widgets to be instantly aligned to a grid, then you
should implement an Layout interface and assign it to the scene or layer
widget. This makes the children Widgets to be alligned instantly.
3) If you want to allow users to move Widgets on a scene freely within a
grid then:
a) implement the 1. case,
b) when you add a new Widget to a scene, check/calculate correct
preferred location of the new Widget based on the grid-size,
c) when an user changes the grid height or width, then
change/recalculate new correct preferred locations of all Widgets.
Regards,
David
Chris Palmer wrote:
Hello!
I would like to implement a simple Grid Layout where the user can
change the width and height of the grid and the widgets could snap to
this grid. So a grid 60 X 60 would reflect 60 little grid boxes.
Would the visual web pack be the best example to look at?
Chris
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