I'm trying to display three TextField in a line horizontally, but the components will be displayed in vertical way:
this is the code:
VerticalLayout vertical = new VerticalLayout();
vertical.addComponent(new TextField("Name"));
vertical.addComponent(new TextField("Street address"));
vertical.addComponent(new TextField("Postal code"));
HorizontalLayout horizontal = new HorizontalLayout();
horizontal.addComponent(new TextField("Name"));
horizontal.addComponent(new TextField("Street address"));
horizontal.addComponent(new TextField("Postal code"));
//setWidth("670px");
//setWidth("100%");
addComponents(vertical, horizontal);
when I diplay that I see:
I've tried to increase the width to 100% try to set the width to 900px; But I'm not able to figure out what can be the issue and where to look for?
Related
I want to align the Button on the same line as the Text Fields. The item alignment has been set to Alignment.CENTER, but as you can see from the image, the vertical centers of the TextFields are lower due to the label on top of them.
HorizontalLayout horizontalLayout = new HorizontalLayout();
horizontalLayout.setAlignItems(FlexComponent.Alignment.CENTER);
Div div = new Div(buttonAddPriceRange);
horizontalLayout.add(spanneVon, spanneBis, div);
layout.setAlignItems(Alignment.BASELINE); allows you to align items by the baseline, that is with the bottom.
HorizontalLayout hl = new HorizontalLayout(new TextField("hello"),
new Button("world"));
hl.setAlignItems(Alignment.BASELINE);
add(hl);
Check out the great video Master Vaadin VerticalLayout and HorizontalLayout - layouts in Vaadin Flow to learn more.
Try ...
horizontalLayout.setAlignItems(FlexComponent.Alignment.BASELINE);
Using Vaadin 8 to develop simple application with horizontal menubar on top and grid in the center. I am finding it hard to get a simple Horizontal Menu bar with icon. I am using the default CRUD View example with some modification and here is the snippet below :
public MainScreen(MyUI ui) {
setSpacing(false);
setStyleName("main-screen");
setMargin(false);
setSizeFull();
addComponent(getMenu());
HorizontalLayout menuLayout = new HorizontalLayout();
menuLayout.addStyleName("valo-content");
menuLayout.setWidth("100%");
menuLayout.setSpacing(false);
HorizontalLayout viewContainer = new HorizontalLayout();
viewContainer.addStyleName("valo-content");
viewContainer.setWidth("100%");
final Navigator navigator = new Navigator(ui, viewContainer);
navigator.setErrorView(ErrorView.class);
menu = new Menu(navigator);
menu.addView(new SampleCrudView(), SampleCrudView.VIEW_NAME, SampleCrudView.VIEW_NAME, VaadinIcons.EDIT);
menu.addView(new AboutView(), AboutView.VIEW_NAME, AboutView.VIEW_NAME, VaadinIcons.INFO_CIRCLE);
navigator.addViewChangeListener(viewChangeListener);
Image image = new Image(null, new ThemeResource("img/example.jpg"));
menuLayout.addComponent(image);
menuLayout.addComponent(menu);
menuLayout.setSizeFull();
addComponent(menuLayout);
addComponent(viewContainer);
setExpandRatio(menuLayout, 1);
setSizeFull();
}
Appreciate if any one could help me understand layouts and how to fix this issue.
Here is the snapshot the below with weird spacing and layout
Okay so I am new to the Swift programmming language and IOS platform however I have a strong background in mobile development on other platforms such as Android/WP/Xamarin so I decided to just dive in and learn the layout system starting with Auto Layout.
Here I am trying to center a view horizontally and align it to the bottom of the screen using the Auto Layout API via PureLayout. When I set the view to align to the horizontal axis of it's superview this is result I get.
Code
override func updateViewConstraints() {
if(!didSetupConstraints)
{
blackView.autoPinToBottomLayoutGuideOfViewController(self, withInset: 10)
blackView.autoSetDimensionsToSize(CGSize(width:50,height: 50))
blackView.autoAlignAxisToSuperviewAxis(.Horizontal)
didSetupConstraints=true
}
super.updateViewConstraints()
}
Result
However when I set the view to align to the vertical axis I get the desired end result
Code
override func updateViewConstraints() {
if(!didSetupConstraints)
{
blackView.autoPinToBottomLayoutGuideOfViewController(self, withInset: 10)
blackView.autoSetDimensionsToSize(CGSize(width:50,height: 50))
blackView.autoAlignAxisToSuperviewAxis(.Vertical)
didSetupConstraints=true
}
super.updateViewConstraints()
}
Result
Even though I got the result that I wanted, I did not feel good about proceeding without properly understanding why it got aligned in the center horizontally by setting the view to align to it's superview's vertical axis. So can someone explain to me the whole notion of aligning to axes and how they work in Auto Layout. Thanks in advance.
Being centered horizontally and aligning to the vertical axis are the same thing.
The vertical axis is a imaginary vertical line that is centered between the views left and right edge. So if a view is aligned with it, the view will be positioned anywhere along that vertical line, causing the view to be entered horizontally.
The source for Pure Layout also has a definition and shows how they map to regular auto layout if that helps.
/** A vertical line equidistant from the view's left and right edges. */
ALAxisVertical = NSLayoutAttributeCenterX,
/** A horizontal line equidistant from the view's top and bottom edges. */
ALAxisHorizontal = NSLayoutAttributeCenterY,
If I use following code to create a UI using Vaadin,
#Override
protected void init(VaadinRequest request) {
HorizontalLayout horizontalLayout = new HorizontalLayout();
horizontalLayout.addComponent(new Label("Why am I not shown?"));
Button button = new Button("expanding button");
horizontalLayout.addComponent(button);
horizontalLayout.setExpandRatio(button, 1);
horizontalLayout.setWidth(100, Unit.PERCENTAGE);
setContent(horizontalLayout);
}
The label I added to horizontalLayout is not shown in the created UI. Why is that? What I expect to happen in this case is the label to take its required width and the button to take the rest of the width. But the label is not shown at all.
Please don't ask me why I want to expand the button. This is just a MCVE and my real UI is somewhat more complex.
The Button has undefined size by default. So space will be shared by the 100% sized Label (by default) with expand ratio of 0 and the excess space of the Button cell with expand ratio 1. So all space is given to the excess space of the button.
Set the Label to have a undefined size with label.setSizeUndefined() and will work as you expect.
Note that relative sized components can lost all his space when using a expand ratio.
For example:
HorizontalLayout horizontalLayout = new HorizontalLayout();
Label l1 = new Label("one");
Label l2 = new Label("two");
Label l3 = new Label("three");
horizontalLayout.addComponent(l1);
horizontalLayout.addComponent(l2);
horizontalLayout.addComponent(l3);
horizontalLayout.setExpandRatio(l2, 1);
Will show only label "two".
I'm trying to have a TabSet in a Window. I would like the window to fit the contents so I turned autoSize on like I have done with many other windows. The window have a minimum width and height that I want it to be. My problem is that the TabSet in the Window doesn't fill up the height completely.
Here is my setup:
public MyWindow()
{
setHeight(MIN_HEIGHT);
setWidth(MIN_WIDTH);
setAutoSize(true);
theTabSet = new TabSet();
theTabSet.setTabBarPosition(Side.TOP);
theTabSet.setWidth100();
theTabSet.setHeight100();
// I need to set this for it to at least display the contents
theTabSet.setPaneContainerOverflow(Overflow.VISIBL E);
theTabSet.setOverflow(Overflow.VISIBLE);
//This seems to solve my issue buy I think I shouldn't be doing this.
theTabSet.setMinHeight(WINDOW_HEIGHT);
Tab tab1 = new Tab("first");
tab1.setPane(getFirstTab());
Tab tab2 = new Tab("second");
tab2.setTab(getSecondTab());
addItem(theTabSet);
}
private Layout getFirstTab(){
if(theFirstTab == null){
theFirstTab = new VLayout();
theFirstTab.setWidth100();
theFirstTab().setHeight100();
}
return theFirstTab;
}
Please let me know if I am missing something. According to the Layout API:
Like other Canvas subclasses, Layout and Stack components may have %
width and height values. To create a dynamically-resizing layout that
occupies the entire page (or entire parent component), set width and
height to "100%
theTabSet.setMinHeight(WINDOW_HEIGHT);
Seems to be the way to go. The window is set to fit it contents and the layout is set to fill the canvas. The window knows a minimum height and width but initially the layout doesn't know that. So we need to set it manually.