114 lines
4.2 KiB
Kotlin
114 lines
4.2 KiB
Kotlin
package com.lagradost.cloudstream3.widget
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import android.annotation.SuppressLint
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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 androidx.core.view.marginEnd
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import com.lagradost.cloudstream3.R
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import kotlin.math.max
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class FlowLayout : ViewGroup {
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var itemSpacing: Int = 0
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constructor(context: Context?) : super(context)
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//@JvmOverloads
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//constructor(context: Context?, attrs: AttributeSet?, defStyleAttr: Int = 0) : super(context, attrs, defStyleAttr)
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@SuppressLint("CustomViewStyleable")
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internal constructor(c: Context, attrs: AttributeSet?) : super(c, attrs) {
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val t = c.obtainStyledAttributes(attrs, R.styleable.FlowLayout_Layout)
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itemSpacing = t.getDimensionPixelSize(R.styleable.FlowLayout_Layout_itemSpacing, 0);
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t.recycle()
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}
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override fun onMeasure(widthMeasureSpec: Int, heightMeasureSpec: Int) {
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val realWidth = MeasureSpec.getSize(widthMeasureSpec)
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var currentHeight = 0
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var currentWidth = 0
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var currentChildHookPointx = 0
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var currentChildHookPointy = 0
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val childCount = this.childCount
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for (i in 0 until childCount) {
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val child = getChildAt(i)
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measureChild(child, widthMeasureSpec, heightMeasureSpec)
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val childWidth = child.measuredWidth
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val childHeight = child.measuredHeight
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currentHeight = max(currentHeight, currentChildHookPointy + childHeight)
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//check if child can be placed in the current row, else go to next line
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if (currentChildHookPointx + childWidth - child.marginEnd - child.paddingEnd > realWidth) {
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//new line
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currentWidth = max(currentWidth, currentChildHookPointx)
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//reset for new line
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currentChildHookPointx = 0
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currentChildHookPointy += childHeight
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}
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val nextChildHookPointx =
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currentChildHookPointx + childWidth + if (childWidth == 0) 0 else itemSpacing
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val nextChildHookPointy = currentChildHookPointy
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val lp = child.layoutParams as LayoutParams
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lp.x = currentChildHookPointx
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lp.y = currentChildHookPointy
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currentChildHookPointx = nextChildHookPointx
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currentChildHookPointy = nextChildHookPointy
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}
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currentWidth = max(currentChildHookPointx, currentWidth)
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setMeasuredDimension(
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resolveSize(currentWidth, widthMeasureSpec),
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resolveSize(currentHeight, heightMeasureSpec)
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)
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}
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override fun onLayout(b: Boolean, left: Int, top: Int, right: Int, bottom: Int) {
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//call layout on children
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val childCount = this.childCount
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for (i in 0 until childCount) {
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val child = getChildAt(i)
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val lp = child.layoutParams as LayoutParams
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child.layout(lp.x, lp.y, lp.x + child.measuredWidth, lp.y + child.measuredHeight)
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}
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}
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override fun generateLayoutParams(attrs: AttributeSet): LayoutParams {
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return LayoutParams(context, attrs)
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}
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override fun generateDefaultLayoutParams(): LayoutParams {
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return LayoutParams(
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ViewGroup.LayoutParams.WRAP_CONTENT,
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ViewGroup.LayoutParams.WRAP_CONTENT
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)
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}
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override fun generateLayoutParams(p: ViewGroup.LayoutParams): LayoutParams {
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return LayoutParams(p)
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}
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override fun checkLayoutParams(p: ViewGroup.LayoutParams): Boolean {
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return p is LayoutParams
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}
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class LayoutParams : MarginLayoutParams {
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var spacing = -1
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var x = 0
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var y = 0
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@SuppressLint("CustomViewStyleable")
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internal constructor(c: Context, attrs: AttributeSet?) : super(c, attrs) {
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val t = c.obtainStyledAttributes(attrs, R.styleable.FlowLayout_Layout)
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spacing = 0//t.getDimensionPixelSize(R.styleable.FlowLayout_Layout_itemSpacing, 0);
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t.recycle()
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}
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internal constructor(width: Int, height: Int) : super(width, height) {
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spacing = 0
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}
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constructor(source: MarginLayoutParams?) : super(source)
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internal constructor(source: ViewGroup.LayoutParams?) : super(source)
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}
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} |