55 lines
1.9 KiB
Kotlin
55 lines
1.9 KiB
Kotlin
/*
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* Twidere - Twitter client for Android
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*
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* Copyright (C) 2012-2017 Mariotaku Lee <mariotaku.lee@gmail.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package org.mariotaku.twidere.view
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import android.content.Context
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import android.util.AttributeSet
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import android.view.View
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import android.widget.ScrollView
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import org.mariotaku.twidere.R
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import kotlin.math.min
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class MaxHeightScrollView(context: Context, attrs: AttributeSet? = null) : ScrollView(context, attrs) {
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private var maxHeight: Int = -1
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init {
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val styledAttrs = context.obtainStyledAttributes(attrs, R.styleable.MaxHeightScrollView)
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// 200 is a default value
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maxHeight = styledAttrs.getDimensionPixelSize(R.styleable.MaxHeightScrollView_android_maxHeight, -1)
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styledAttrs.recycle()
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}
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override fun onMeasure(widthMeasureSpec: Int, heightMeasureSpec: Int) {
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val hSpec = if (maxHeight >= 0) {
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val measuredHeight = MeasureSpec.getSize(heightMeasureSpec)
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if (measuredHeight > 0) {
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MeasureSpec.makeMeasureSpec(
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min(measuredHeight, maxHeight),
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MeasureSpec.AT_MOST)
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} else {
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maxHeight
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}
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} else {
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heightMeasureSpec
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}
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super.onMeasure(widthMeasureSpec, hSpec)
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}
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} |