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[Docs] update BottomAppBar.md #4476

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47 changes: 15 additions & 32 deletions docs/components/BottomAppBar.md
Original file line number Diff line number Diff line change
Expand Up @@ -312,8 +312,6 @@ API and source code:
* `FloatingActionButton`
* [Class definition](https://developer.android.com/reference/com/google/android/material/floatingactionbutton/FloatingActionButton)
* [Class source](https://github.com/material-components/material-components-android/tree/master/lib/java/com/google/android/material/floatingactionbutton/FloatingActionButton.java)
* `BottomAppBarCutCornersTopEdge`:
* [Class source](https://github.com/material-components/material-components-android/tree/master/catalog/java/io/material/catalog/bottomappbar/BottomAppBarCutCornersTopEdge.java)

The following example shows a bottom app bar with Material Theming.

Expand All @@ -327,22 +325,22 @@ bottom app bars and FABs and affects other components:
```xml
<style name="Theme.App" parent="Theme.Material3.*">
...
<item name="colorPrimary">@color/shrine_pink_100</item>
<item name="colorOnPrimary">@color/shrine_pink_900</item>
<item name="colorSecondary">@color/shrine_pink_50</item>
<item name="colorOnSecondary">@color/shrine_pink_900</item>
<item name="colorSurfaceContainer">@color/shrine_pink_100</item>
<item name="colorOnSurface">@color/shrine_pink_900</item>
<item name="colorPrimaryContainer">@color/shrine_pink_50</item>
<item name="colorOnPrimaryContainer">@color/shrine_pink_900</item>
<item name="textAppearanceTitleMedium">@style/TextAppearance.App.Medium</item>
<item name="shapeAppearanceSmallComponent">@style/ShapeAppearance.App.SmallComponent</item>
<item name="shapeAppearanceCornerLarge">@style/ShapeAppearance.App.Corner.Large</item>
</style>

<style name="TextAppearance.App.Medium" parent="TextAppearance.Material3.TitleMedium">
<item name="fontFamily">@font/rubik</item>
<item name="android:fontFamily">@font/rubik</item>
</style>

<style name="ShapeAppearance.App.SmallComponent" parent="ShapeAppearance.Material3.SmallComponent">
<style name="ShapeAppearance.App.Corner.Large" parent="ShapeAppearance.Material3.Corner.Large">
<item name="cornerFamily">cut</item>
<item name="cornerSize">4dp</item>
<item name="cornerSize">50%</item>
</style>
```

Expand All @@ -360,20 +358,20 @@ theme to all bottom app bars and FABs but does not affect other components:
<item name="materialThemeOverlay">@style/ThemeOverlay.App.BottomAppBar</item>
</style>

<style name="Widget.App.FloatingActionButton" parent="Widget.Material3.FloatingActionButton">
<style name="Widget.App.FloatingActionButton" parent="Widget.Material3.FloatingActionButton.Primary">
<item name="materialThemeOverlay">@style/ThemeOverlay.App.FloatingActionButton</item>
</style>

<style name="ThemeOverlay.App.BottomAppBar" parent="">
<item name="colorPrimary">@color/shrine_pink_100</item>
<item name="colorOnPrimary">@color/shrine_pink_900</item>
<style name="ThemeOverlay.App.BottomAppBar" parent="ThemeOverlay.Material3.BottomAppBar">
<item name="colorSurfaceContainer">@color/shrine_pink_100</item>
<item name="colorOnSurface">@color/shrine_pink_900</item>
<item name="textAppearanceTitleMedium">@style/TextAppearance.App.TitleMedium</item>
</style>

<style name="ThemeOverlay.App.FloatingActionButton" parent="">
<item name="colorSecondary">@color/shrine_pink_50</item>
<item name="colorOnSecondary">@color/shrine_pink_900</item>
<item name="shapeAppearanceSmallComponent">@style/ShapeAppearance.App.SmallComponent</item>
<style name="ThemeOverlay.App.FloatingActionButton" parent="ThemeOverlay.Material3.FloatingActionButton.Primary">
<item name="colorPrimaryContainer">@color/shrine_pink_50</item>
<item name="colorOnPrimaryContainer">@color/shrine_pink_900</item>
<item name="shapeAppearanceCornerLarge">@style/ShapeAppearance.App.Corner.Large</item>
</style>
```

Expand All @@ -390,18 +388,3 @@ Use the styles in the layout, which affects only this bottom app bar and FAB:
style="@style/Widget.App.FloatingActionButton"
/>
```

In code:

```kt
val topEdge = BottomAppBarCutCornersTopEdge(
bottomAppBar.fabCradleMargin,
bottomAppBar.fabCradleRoundedCornerRadius,
bottomAppBar.cradleVerticalOffset
)
val background = bottomAppBar.background as MaterialShapeDrawable
background.shapeAppearanceModel = background.shapeAppearanceModel.toBuilder().setTopEdge(topEdge).build()
```

**Note:** Using `BottomAppBarCutCornersTopEdge` is not necessary with rounded
shapeAppearance corners.
Binary file modified docs/components/assets/bottomappbar/bottomappbar_theming.png
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