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Horizontal Layout

Source: TypeScript / Java
Horizontal Layout places components side-by-side in a row.

Horizontal Layout places components side-by-side in a row. By default, it defines its width and height automatically, determined by the components it contains (i.e., it “hugs” the content).

See Vertical Layout for placing components top-to-bottom.

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HorizontalLayout layout = new HorizontalLayout();
layout.setPadding(true);
layout.add(new Button("Button 1"));
layout.add(new Button("Button 2"));
layout.add(new Button("Button 3"));

Components in a Horizontal Layout can be aligned horizontally, as you’d expect, but also vertically.

Vertical Alignment

You can position components at the top, middle, or bottom. You can also stretch items or position them along the text baseline in the layout.

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HorizontalLayout layout = new HorizontalLayout();
layout.setPadding(true);
layout.setAlignItems(FlexComponent.Alignment.CENTER);
layout.add(new TextArea("Text area 1"));
layout.add(new TextArea("Text area 2"));
layout.add(new TextArea("Text area 3"));
Value Description

STRETCH (default)

Vertically stretches items that have undefined height.

START

Positions items at the top of the layout.

CENTER

Centers items, vertically.

END

Positions items at the bottom of the layout.

BASELINE

Positions items along the layout’s text baseline.

It’s also possible to set a different vertical alignment for individual items by overriding the general alignment setting of the layout.

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TextArea textArea1 = new TextArea("Text area 1");
HorizontalLayout layout = new HorizontalLayout();
layout.setPadding(true);
layout.setAlignItems(FlexComponent.Alignment.STRETCH);
layout.add(textArea1);
layout.setAlignSelf(FlexComponent.Alignment.START, textArea1);
layout.add(new TextArea("Text area 2"));
TextArea textArea3 = new TextArea("Text area 3");
layout.add(textArea3);
layout.setAlignSelf(FlexComponent.Alignment.END, textArea3);

Horizontal Alignment

Components in a Horizontal Layout can be left-aligned, centered or right-aligned. You can also position components by specifying how the excess space in a layout is distributed among them.

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HorizontalLayout layout = new HorizontalLayout();
layout.setPadding(true);
layout.setJustifyContentMode(FlexComponent.JustifyContentMode.CENTER);
layout.add(new Button("Button 1"));
layout.add(new Button("Button 2"));
layout.add(new Button("Button 3"));
Value Description

START (default)

Left-aligns for left-to-right language items. For right-to-left languages, right-aligns items.

CENTER

Centers items, horizontally.

END

Right-aligns for left-to-right language items. For right-to-left languages, left-aligns items.

BETWEEN

Available space is distributed evenly between items. No space is added before the first item, or after the last.

AROUND

Available space is distributed evenly around items. The space before the first item and after the last, is half of that between items.

EVENLY

Available space is distributed evenly between items. The space before the first item, between items, and after the last item is the same.

Spacing

Spacing is used to create space among components in the same layout. Spacing can help prevent misclicks and distinguish content areas.

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// HorizontalLayout has spacing enabled by default, use setSpacing to disable it
HorizontalLayout layoutWithoutSpacing = new HorizontalLayout();
layoutWithoutSpacing.setSpacing(false);

Five different spacing theme variants are available:

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@state()
private themeVariant = 'spacing-xl';

protected override render() {
  return html`
    <vaadin-horizontal-layout theme="${this.themeVariant} padding" style="align-items: stretch">
      <vaadin-button>Button 1</vaadin-button>
      <vaadin-button>Button 2</vaadin-button>
      <vaadin-button>Button 3</vaadin-button>
    </vaadin-horizontal-layout>
    <vaadin-radio-group
      label="Spacing variant"
      .value="${this.themeVariant}"
      @value-changed="${(event: RadioGroupValueChangedEvent) => {
        this.themeVariant = event.detail.value;
      }}"
    >
      <vaadin-radio-button value="spacing-xs" label="spacing-xs"></vaadin-radio-button>
      <vaadin-radio-button value="spacing-s" label="spacing-s"></vaadin-radio-button>
      <vaadin-radio-button value="spacing" label="spacing"></vaadin-radio-button>
      <vaadin-radio-button value="spacing-l" label="spacing-l"></vaadin-radio-button>
      <vaadin-radio-button value="spacing-xl" label="spacing-xl"></vaadin-radio-button>
    </vaadin-radio-group>
  `;
}
Theme Variant Usage Recommendation

spacing-xs

Extra-small space between items.

spacing-s

Small space between items.

spacing

Medium space between items.

spacing-l

Large space between items.

spacing-xl

Extra-large space between items.

 
HorizontalLayout layout = new HorizontalLayout();
layout.setSpacing(false);
layout.getThemeList().add("spacing-xs");

Padding

Padding is the space between the outer border and the content in a layout. Padding can help distinguish the content in a layout from its surrounding. Padding is applied using the padding theme variant.

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HorizontalLayout layoutWithPadding = new HorizontalLayout();
layoutWithPadding.setPadding(true);

Margin

Use margin to create space around a layout.

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HorizontalLayout layoutWithMargin = new HorizontalLayout();
layoutWithMargin.setMargin(true);

Expanding Items

Components can be made to expand and take up any excess space a layout may have.

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Button button1 = new Button("Button 1");
HorizontalLayout layout = new HorizontalLayout();
layout.setFlexGrow(1, button1);

When multiple components expand, they do so relative to each other. For example, having two items with expand ratios of 2 and 1 results in the first item taking up twice as much of the available space as the second item.

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