Keep list values clear of the scrollbar

The central option is scrollbarMode="showOnDemandShrink". It shows the scrollbar when needed and enables width adjustment for supported MultiContent drawing operations at the right edge. It is a value of scrollbarMode, not a separate autoWidth or shrink Boolean attribute.

In the screen you are already skinning, adapt its existing config widget:

<widget name="config" position="20,20" size="800,300"
        itemHeight="50" scrollbarMode="showOnDemandShrink"
        scrollbarWidth="12" scrollbarOffset="4"
        entryFont="Regular;24" valueFont="Regular;24" />

This requires the screen’s existing ConfigList component; it is not a standalone screen definition. Its normal configuration-value renderer already calculates available space from the current item width. The explicit shrink flag is relevant to fixed drawing rectangles in MultiContent lists. Similar appearance does not mean ConfigList and every list template share the same resizing mechanism.

A list with a right-aligned value column

This example requires an existing Components.Sources.List called list, with two text fields per tuple: index 0 is the label and index 1 is its value. Place it inside that screen and populate enough entries to exceed six rows.

<widget source="list" render="Listbox" position="20,20" size="800,300"
        scrollbarMode="showOnDemandShrink" scrollbarWidth="12" scrollbarOffset="4">
  <template name="Default" fonts="Regular;24" itemWidth="800" itemHeight="50">
    <text index="0" position="0,0" size="480,50" font="0"
          horizontalAlignment="left" verticalAlignment="center" />
    <text index="1" position="500,0" size="300,50" font="0"
          horizontalAlignment="right" verticalAlignment="center" />
  </template>
</widget>

Scrollbar hidden

SettingValue

Text ends at the full row width.

Scrollbar visible

SettingValue

Right-aligned value moves inward by width + gap.

Conceptual illustration, not an Enigma2 screenshot. Actual font metrics, spacing and rendering depend on the receiver and skin.

For this unscaled geometry, a visible scrollbar occupies 12 + 4 = 16 pixels. The value box ends at 500 + 300 = 800. Reducing its width to 284 moves its right-aligned text edge to 784, leaving the scrollbar and gap free. The field’s x-coordinate stays at 500. Left-aligned text would keep its starting position and gain a smaller drawing area.

Which items change width?

showOnDemandShrink does not mean “always resize the final tuple item”. Native MultiContent checks whether a supported drawing rectangle extends beyond the reduced item width and subtracts the visible scrollbar offset. A small field that already ends before that edge is unaffected. The offset is zero while the scrollbar is hidden.

There is also an automatic path in XmlMultiContent: the parser finds the drawing item with the largest x + width; if that item is text, it marks the width negative internally. The native text painter interprets that marker as “subtract the scrollbar offset for a vertical list”. This can already keep the rightmost text clear with ordinary showOnDemand. Do not add a negative XML size to copy that internal marker. With the full-width geometry above, that automatic adjustment and the overflow check do not require two manual deductions.

autoGrow in a horizontal template panel concerns leftover layout space at parse time. It is a different mechanism and is not the scrollbar visibility option.

Modes and troubleshooting

Value	Behaviour
`showOnDemand`	Show when needed; content-specific sizing still applies
`showOnDemandShrink`	On-demand mode plus the native MultiContent overflow-width adjustment
`showAlways`	Always reserve/show the scrollbar according to native layout
`showNever`	No visible scrollbar
`showLeftOnDemand`, `showLeftAlways`	Left-side variants
`showTopOnDemand`, `showTopAlways`	Top-side variants for appropriate layouts

Use exact case. showLeft is an old value; use showLeftOnDemand in new skins. There is no corresponding showLeftOnDemandShrink token in this snapshot.

If nothing changes, first test with both fewer and more entries than fit. Then check the selected template/mode, the field’s right edge and alignment, and any renderer/converter or screen code overriding scrollbarMode. Avoid combining a manually reduced value width with another reduction unless you intend the extra space. ScrollLabel is a composite component with its own mode handling; do not assume it accepts every native listbox token. Test horizontal/grid layouts separately.

Verification

The XML and behaviour were checked against source revision f4135659cb5ee225efd84db1a944b5f72fa6b2a0; the diagram is illustrative and the new snippets have not been tested on a receiver. Evidence: mode parser, native shrink mode, visible scrollbar offset, MultiContent text width, and automatic rightmost-text marker.

See the scrollbarMode reference and template geometry.