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61 lines
1.4 KiB
Markdown
61 lines
1.4 KiB
Markdown
# Max-height
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The `max-height` rule sets a maximum height for a widget.
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## Syntax
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--8<-- "docs/snippets/syntax_block_start.md"
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max-height: <a href="../css_types/scalar.md"><scalar></a>;
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--8<-- "docs/snippets/syntax_block_end.md"
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The `max-height` rule accepts a [`<scalar>`](../css_types/scalar.md) that defines an upper bound for the [`height`](./height.md) of a widget.
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That is, the height of a widget is never allowed to exceed `max-height`.
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### Values
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--8<-- "docs/snippets/type_syntax/scalar.md"
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## Example
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The example below shows some placeholders that were defined to span vertically from the top edge of the terminal to the bottom edge.
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Then, we set `max-height` individually on each placeholder.
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=== "Output"
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```{.textual path="docs/examples/styles/max_height.py"}
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```
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=== "max_height.py"
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```py
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--8<-- "docs/examples/styles/max_height.py"
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```
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=== "max_height.css"
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```css
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--8<-- "docs/examples/styles/max_height.css"
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```
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1. This won't affect the placeholder because its height is less than the maximum height.
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## CSS
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```sass
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/* Set the maximum height to 10 rows */
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max-height: 10;
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/* Set the maximum height to 25% of the viewport height */
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max-height: 25vh;
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```
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## Python
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```python
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# Set the maximum height to 10 rows
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widget.styles.max_height = 10
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# Set the maximum height to 25% of the viewport height
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widget.styles.max_height = "25vh"
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```
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