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Vuetify

Vuetify — App Bar and Scrolling

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Vuetify is a popular UI framework for Vue apps.

In this article, we’ll look at how to work with the Vuetify framework.

Prominent App Bar with Scroll Shrink

We can add the shrink-to-scroll prop to make the app bar shrink on scroll.

For example, we can write:

<template>
  <v-container>
    <v-row class="text-center">
      <v-col col="12">
        <v-card class="overflow-hidden">
          <v-app-bar
            absolute
            color="indigo darken-2"
            dark
            shrink-on-scroll
            prominent
            scroll-target="#scrolling"
          >
            <v-app-bar-nav-icon></v-app-bar-nav-icon>

            <v-toolbar-title>Title</v-toolbar-title>

            <v-spacer></v-spacer>

            <v-btn icon>
              <v-icon>mdi-magnify</v-icon>
            </v-btn>

            <v-btn icon>
              <v-icon>mdi-heart</v-icon>
            </v-btn>

            <v-btn icon>
              <v-icon>mdi-dots-vertical</v-icon>
            </v-btn>
          </v-app-bar>
          <v-sheet id="scrolling" class="overflow-y-auto" max-height="600">
            <v-container style="height: 1000px;"></v-container>
          </v-sheet>
        </v-card>
      </v-col>
    </v-row>
  </v-container>
</template>

<script>
export default {
  name: "HelloWorld",
  data: () => ({}),
};
</script>

We have the v-app-bar with the v-sheet as the scroll target to watch for to determine the height of the app bar.

The app bar will shrink when we scroll the v-sheet component.

Prominent App Bar with Scroll Shrink and Image

We can add a background image to the app bar.

For example, we can write:

<template>
  <v-container>
    <v-row class="text-center">
      <v-col col="12">
        <v-card class="overflow-hidden">
          <v-app-bar
            absolute
            color="#fcb69f"
            dark
            shrink-on-scroll
            src="https://picsum.photos/1920/1080?random"
            scroll-target="#scrolling"
          >
            <template v-slot:img="{ props }">
              <v-img
                v-bind="props"
                gradient="to top right, rgba(19,84,122,.5), rgba(128,208,199,.8)"
              ></v-img>
            </template>

            <v-app-bar-nav-icon></v-app-bar-nav-icon>

            <v-toolbar-title>Title</v-toolbar-title>

            <v-spacer></v-spacer>

            <v-btn icon>
              <v-icon>mdi-magnify</v-icon>
            </v-btn>

            <v-btn icon>
              <v-icon>mdi-heart</v-icon>
            </v-btn>

            <v-btn icon>
              <v-icon>mdi-dots-vertical</v-icon>
            </v-btn>
          </v-app-bar>
          <v-sheet id="scrolling" class="overflow-y-auto" max-height="600">
            <v-container style="height: 1000px;"></v-container>
          </v-sheet>
        </v-card>
      </v-col>
    </v-row>
  </v-container>
</template>

<script>
export default {
  name: "HelloWorld",
  data: () => ({}),
};
</script>

to add a background image with the src prop.

Also, we add a gradient with the v-img component to add a gradient background.

Hiding on Scroll

We can also hide the app bar with the hide-on-scroll prop.

For instance, we can write:

<template>
  <v-container>
    <v-row class="text-center">
      <v-col col="12">
        <v-card class="overflow-hidden">
          <v-app-bar
            absolute
            color="teal lighten-3"
            dark
            hide-on-scroll
            prominent
            scroll-target="#scrolling"
          >
            <v-app-bar-nav-icon></v-app-bar-nav-icon>

            <v-toolbar-title>Title</v-toolbar-title>

            <v-spacer></v-spacer>

            <v-btn icon>
              <v-icon>mdi-magnify</v-icon>
            </v-btn>

            <v-btn icon>
              <v-icon>mdi-heart</v-icon>
            </v-btn>

            <v-btn icon>
              <v-icon>mdi-dots-vertical</v-icon>
            </v-btn>
          </v-app-bar>
          <v-sheet id="scrolling" class="overflow-y-auto" max-height="600">
            <v-container style="height: 1000px;"></v-container>
          </v-sheet>
        </v-card>
      </v-col>
    </v-row>
  </v-container>
</template>

<script>
export default {
  name: "HelloWorld",
  data: () => ({}),
};
</script>

We just add the hide-on-scroll prop with the scroll-target to hide the app bar when the scroll target is being scrolled.

Conclusion

We can change the app bar our way on scroll with Vuetify.

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