Make an HLayout that never leaves the bottom of the screen?

Smart GWT Technical Q&A
1

I’m wondering if I’m asking too much of the layout mechanism but I want to have an hlayout that is always on the screen at the bottom of the browser even when scrolling. So I scroll down this layout is still at the bottom of the screen, then I scroll up this layout can still be seen in full at the bottom of the screen.

Has anybody attempted to do this before or know if it is possible?

2

One thing you can do to simulate this behavior, is creating a window, setting it as a child of the main layout (Canvas.addChild()), and snapping it to bottom:

                Window upw;
                Layout rootLayut;
                rootLayout.addChild(upw);
                upw.setSnapOffsetLeft(-6);
                upw.setSnapOffsetTop(-6 );
                // means Bottom/Right, check docs
                upw.setSnapTo("BR");

also, you can set certain properties on the window (adjust to suit your needs), to make it look just like a regular canvas:

        upw.setHeight(50);
        upw.setWidth100();
        upw.setShowHeader(false);
        upw.setScrollbarSize(0);
        upw.setShowHeaderBackground(false);
        upw.setBackgroundColor("white");
        upw.setCanDrag(false);
        upw.setCanDragReposition(false);
        upw.setShowEdges(false);

hope this helps,
Andrius J.

3

I actually after I posted the message tried this and it seems to work well for what I want. Not sure if it was meant to be used for layout but I used a SectionStack() then put 2 layouts inside of it. the first is my normal page without the header of the section and scrollable and the second is the thing I wanted to stick to the bottom of the page. It’s actually working out better than I anticipated because I can minimize the second section.