`header_card` won't resize according to window size

[Venkat-Rajgopal]

Wave SDK Version, OS

• Mac OS
• h2o-wave==0.25.2

Actual behavior

At the moment the card is cut towards the end since cards don't seem to resize.

Expected behaviour

It would be nice if the header card resizes when a window is resized. Is this possible to fix somehow with the current version ?

Steps To Reproduce

async def serve(q: Q):
  q.page['header'] = ui.header_card(
          box='1 1 10 1',
          title='Wave App',
          subtitle='',
          icon='FlashAuto',
          color="card",
          items=[ui.menu(image=image, items=[
              ui.command(name='profile', label='Profile', icon='Contact'),
              ui.command(name='preferences', label='Preferences',
                         icon='Settings'),
              ui.command(name='logout', label='Logout', icon='SignOut'),
          ])]
      )
   await q.page.save()

[mturoci]

Hi @Venkat-Rajgopal. The reason your code above is not working is because you have used a fixed grid layout (box='1 1 10 1'). If you want to achieve responsiveness, you need to reach for flex layout instead.

# Layout / Responsive
# How to create a #responsive #layout.
# ---
from h2o_wave import main, app, Q, ui

@app('/')
async def serve(q: Q):
    content = '![Wave University](https://raw.githubusercontent.com/h2oai/wave/master/assets/brand/wave-university-wide.png)'

    # The meta card's 'zones' attribute defines placeholder zones to lay out cards for different viewport sizes.
    # We define three layout schemes here.
    q.page['meta'] = ui.meta_card(box='', layouts=[
        ui.layout(
            # If the viewport width >= 0:
            breakpoint='xs',
            zones=[
                # 80px high header
                ui.zone('header', size='80px'),
                # Use remaining space for content
                ui.zone('content')
            ]
        ),
    ])

    q.page['header'] = ui.header_card(
        # Place card in the header zone, regardless of viewport size.
        box='header',
        title='Lorem Ipsum',
        subtitle='Excepteur sint occaecat cupidatat',
        nav=[
            ui.nav_group('Menu', items=[
                ui.nav_item(name='#menu/spam', label='Spam'),
                ui.nav_item(name='#menu/ham', label='Ham'),
                ui.nav_item(name='#menu/eggs', label='Eggs'),
            ]),
            ui.nav_group('Help', items=[
                ui.nav_item(name='#about', label='About'),
                ui.nav_item(name='#support', label='Support'),
            ])
        ],
    )
    q.page['controls'] = ui.markdown_card(
        # If the viewport width >= 0, place in content zone.
        # If the viewport width >= 768, place in sidebar zone.
        # If the viewport width >= 1200, place in sidebar zone.
        box='content',
        title='Controls',
        content=content,
    )
    await q.page.save()

[Venkat-Rajgopal]

Hi @Venkat-Rajgopal. The reason your code above is not working is because you have used a fixed grid layout (box='1 1 10 1'). If you want to achieve responsiveness, you need to reach for flex layout instead.

# Layout / Responsive
# How to create a #responsive #layout.
# ---
from h2o_wave import main, app, Q, ui

@app('/')
async def serve(q: Q):
    content = '![Wave University](https://raw.githubusercontent.com/h2oai/wave/master/assets/brand/wave-university-wide.png)'

    # The meta card's 'zones' attribute defines placeholder zones to lay out cards for different viewport sizes.
    # We define three layout schemes here.
    q.page['meta'] = ui.meta_card(box='', layouts=[
        ui.layout(
            # If the viewport width >= 0:
            breakpoint='xs',
            zones=[
                # 80px high header
                ui.zone('header', size='80px'),
                # Use remaining space for content
                ui.zone('content')
            ]
        ),
    ])

    q.page['header'] = ui.header_card(
        # Place card in the header zone, regardless of viewport size.
        box='header',
        title='Lorem Ipsum',
        subtitle='Excepteur sint occaecat cupidatat',
        nav=[
            ui.nav_group('Menu', items=[
                ui.nav_item(name='#menu/spam', label='Spam'),
                ui.nav_item(name='#menu/ham', label='Ham'),
                ui.nav_item(name='#menu/eggs', label='Eggs'),
            ]),
            ui.nav_group('Help', items=[
                ui.nav_item(name='#about', label='About'),
                ui.nav_item(name='#support', label='Support'),
            ])
        ],
    )
    q.page['controls'] = ui.markdown_card(
        # If the viewport width >= 0, place in content zone.
        # If the viewport width >= 768, place in sidebar zone.
        # If the viewport width >= 1200, place in sidebar zone.
        box='content',
        title='Controls',
        content=content,
    )
    await q.page.save()

Thanks that would work. Can I resize the cards which are then placed in the content box. ?

For eg this here occupies the whole window.

labels = ['foo', 'bar', 'bla']
q.page['fleet-option'] = ui.form_card(box='content',
                                          items=[
                                              ui.dropdown(name='dropdown',
                                                          label='Fleets',
                                                          choices=[ui.choice(
                                                              name=fleet,
                                                              label=fleet) for
                                                                   fleet in
                                                                   labels],
                                                          )])

[mturoci]

Can I resize the cards which are then placed in the content box. ?

Yes, everything you need is in the docs.