wbrawner/Simple-Commons
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

make first child of the BreadCrumbs sticky

Browse source
This commit is contained in:
Paul Akhamiogu 2021-08-26 04:14:43 +01:00
parent 5d01963b73
commit 2fd45be05e
1 changed files with 52 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

55
commons/src/main/kotlin/com/simplemobiletools/commons/views/Breadcrumbs.kt
View file

@ -2,13 +2,14 @@ package com.simplemobiletools.commons.views
import android.content.Context
import android.content.res.ColorStateList
import android.graphics.drawable.GradientDrawable
import android.util.AttributeSet
import android.util.TypedValue
import android.view.LayoutInflater
import android.view.View
import android.widget.HorizontalScrollView
import android.widget.LinearLayout
import androidx.core.content.ContextCompat
import androidx.core.view.ViewCompat
import com.simplemobiletools.commons.R
import com.simplemobiletools.commons.extensions.*
import com.simplemobiletools.commons.models.FileDirItem
@ -23,6 +24,7 @@ class Breadcrumbs(context: Context, attrs: AttributeSet) : HorizontalScrollView(
private var isLayoutDirty = true
private var isScrollToSelectedItemPending = false
private var isFirstScroll = true
private var stickyRootInitialLeft = 0
private val textColorStateList: ColorStateList
get() = ColorStateList(
@ -44,6 +46,45 @@ class Breadcrumbs(context: Context, attrs: AttributeSet) : HorizontalScrollView(
itemsLayout.setPaddingRelative(paddingStart, paddingTop, paddingEnd, paddingBottom)
setPaddingRelative(0, 0, 0, 0)
addView(itemsLayout, LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.MATCH_PARENT))
onGlobalLayout {
stickyRootInitialLeft = if (itemsLayout.childCount > 0) {
itemsLayout.getChildAt(0).left
} else {
0
}
}
}
private fun recomputeStickyRootLocation(left: Int) {
stickyRootInitialLeft = left
handleRootStickiness(scrollX)
}
private fun handleRootStickiness(scrollX: Int) {
if (scrollX > stickyRootInitialLeft) {
stickRoot(scrollX - stickyRootInitialLeft)
} else {
freeRoot()
}
}
private fun freeRoot() {
if (itemsLayout.childCount > 0) {
itemsLayout.getChildAt(0).translationX = 0f
}
}
private fun stickRoot(translationX: Int) {
if (itemsLayout.childCount > 0) {
val root = itemsLayout.getChildAt(0)
root.translationX = translationX.toFloat()
ViewCompat.setTranslationZ(root, translationZ)
}
}
override fun onScrollChanged(scrollX: Int, scrollY: Int, oldScrollX: Int, oldScrollY: Int) {
super.onScrollChanged(scrollX, scrollY, oldScrollX, oldScrollY)
handleRootStickiness(scrollX)
}
override fun onLayout(changed: Boolean, left: Int, top: Int, right: Int, bottom: Int) {
@ -54,6 +95,8 @@ class Breadcrumbs(context: Context, attrs: AttributeSet) : HorizontalScrollView(
scrollToSelectedItem()
isScrollToSelectedItemPending = false
}
recomputeStickyRootLocation(left)
}
override fun onMeasure(widthMeasureSpec: Int, heightMeasureSpec: Int) {
@ -139,8 +182,14 @@ class Breadcrumbs(context: Context, attrs: AttributeSet) : HorizontalScrollView(
if (itemsLayout.childCount == 0) {
resources.apply {
background = ContextCompat.getDrawable(context, R.drawable.button_background)
background.applyColorFilter(textColor)
val shapeDrawable = GradientDrawable()
shapeDrawable.shape = GradientDrawable.RECTANGLE
shapeDrawable.cornerRadius = getDimension(R.dimen.medium_margin)
shapeDrawable.mutate()
shapeDrawable.setColor(context.baseConfig.backgroundColor)
shapeDrawable.setStroke(getDimensionPixelOffset(R.dimen.tiny_margin), textColorStateList)
background = shapeDrawable
elevation = getDimension(R.dimen.medium_margin)
val medium = getDimension(R.dimen.medium_margin).toInt()
setPadding(medium, medium, medium, medium)
}