42 lines
1.3 KiB
Kotlin
42 lines
1.3 KiB
Kotlin
package com.keylesspalace.tusky.view
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import android.content.Context
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import android.util.AttributeSet
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import android.view.ViewGroup
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import com.google.android.material.tabs.TabLayout
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/**
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* Workaround for "auto" mode not behaving as expected.
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*
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* Switches the tab display mode depending on available size: start out with "scrollable" but
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* if there is enough room switch to "fixed" (and re-measure).
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*
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* Idea taken from https://stackoverflow.com/a/44894143
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*/
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class AdaptiveTabLayout @JvmOverloads constructor(
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context: Context,
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attrs: AttributeSet? = null,
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defStyleAttr: Int = 0
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) : TabLayout(context, attrs, defStyleAttr) {
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override fun onMeasure(widthMeasureSpec: Int, heightMeasureSpec: Int) {
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tabMode = MODE_SCROLLABLE // make sure to only measure the "minimum width"
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super.onMeasure(widthMeasureSpec, heightMeasureSpec)
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if (tabCount < 2) {
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return
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}
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val tabLayout = getChildAt(0) as ViewGroup
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var widthOfAllTabs = 0
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for (i in 0 until tabLayout.childCount) {
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widthOfAllTabs += tabLayout.getChildAt(i).measuredWidth
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}
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if (widthOfAllTabs <= measuredWidth) {
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// fill all space if there is enough room
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tabMode = MODE_FIXED
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super.onMeasure(widthMeasureSpec, heightMeasureSpec)
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}
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}
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}
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