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41 lines
1.9 KiB
Markdown
41 lines
1.9 KiB
Markdown
# `tek_layout`
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this crate exposes several layout operators
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which work entirely in unsigned coordinates
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and are generic over `tek_engine::Engine`
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and `tek_engine::Content`. chiefly, they
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are not dependent on rendering framework.
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|operator|description|
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|**`When(x, a)`**|render `a` only when `x == true`|
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|**`Either(x, a, b)`**|render `a` when `x == true`, otherwise render `b`|
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|**`Map(get_iterator, callback)`**|transform items in uniform way|
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|**`Bsp`**|concatenative layout|
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|...|...|
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|**`Align`**|pin content along axis|
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|...|...|
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|**`Fill`**|**make content's dimension equal to container's:**|
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|`Fill::x(a)`|use container's width for content|
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|`Fill::y(a)`|use container's height for content|
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|`Fill::xy(a)`|use container's width and height for content|
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|**`Fixed`**|**assign fixed dimension to content:**|
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|`Fixed::x(w, a)`|use width `w` for content|
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|`Fixed::y(w, a)`|use height `w` for content|
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|`Fixed::xy(w, h, a)`|use width `w` and height `h` for content|
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|**`Expand`/`Shrink`**|**change dimension of content:**|
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|`Expand::x(n, a)`/`Shrink::x(n, a)`|increment/decrement width of content area by `n`|
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|`Expand::y(n, a)`/`Shrink::y(n, a)`|increment/decrement height of content area by `m`|
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|`Expand::xy(n, m, a)`/`Shrink::xy(n, m, a)`|increment/decrement width of content area by `n`, height by `m`|
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|**`Min`/`Max`**|**constrain dimension of content:**|
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|`Min::x(w, a)`/`Max::x(w, a)`|enforce minimum/maximum width `w` for content|
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|`Min::y(h, a)`/`Max::y(h, a)`|enforce minimum/maximum height `h` for content|
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|`Min::xy(w, h, a)`/`Max::xy(w, h, a)`|enforce minimum/maximum width `w` and height `h` for content|
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|**`Push`/`Pull`**|**move content along axis:**|
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|`Push::x(n, a)`/`Pull::x(n, a)`|increment/decrement `x` of content area|
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|`Push::y(n, a)`/`Pull::y(n, a)`|increment/decrement `y` of content area|
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|`Push::xy(n, m, a)`/`Pull::xy(n, m, a)`|increment/decrement `x` and `y` of content area|
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**todo:**
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* sensible `Margin`/`Padding`
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* `Reduce`
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