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added background dim functionality for CascadePopup #45

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added background dim functionality for CascadePopup #45

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47bf194
added background dim functionality for CascadePopup
gsrathoreniks Oct 18, 2023
170bef2
Optimized imports
gsrathoreniks Oct 18, 2023
d029e93
added dimAmount property to show method
gsrathoreniks Feb 24, 2024
fd3ac3b
removed extra param and using anchor.rootView
gsrathoreniks Feb 24, 2024
c710080
default dimAmount set to null and added nullcheck so it wont be calle…
gsrathoreniks Feb 24, 2024
bf242e0
Added animation for adding and removing background dim.
gsrathoreniks Feb 24, 2024
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39 changes: 37 additions & 2 deletions cascade/src/main/java/me/saket/cascade/CascadePopupMenu.kt
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Original file line number Diff line number Diff line change
Expand Up @@ -3,8 +3,13 @@

package me.saket.cascade

import android.animation.Animator
import android.animation.AnimatorListenerAdapter
import android.animation.ObjectAnimator
import android.annotation.SuppressLint
import android.content.Context
import android.graphics.Color
import android.graphics.drawable.ColorDrawable
import android.graphics.drawable.Drawable
import android.view.Gravity
import android.view.Menu
Expand All @@ -15,6 +20,7 @@ import android.view.View.SCROLLBARS_INSIDE_OVERLAY
import android.view.ViewGroup.LayoutParams
import android.view.ViewGroup.LayoutParams.MATCH_PARENT
import android.view.ViewGroup.LayoutParams.WRAP_CONTENT
import androidx.annotation.IntRange
import androidx.annotation.MenuRes
import androidx.appcompat.view.SupportMenuInflater
import androidx.appcompat.view.menu.MenuBuilder
Expand Down Expand Up @@ -68,7 +74,7 @@ open class CascadePopupMenu @JvmOverloads constructor(
}
}

fun show() {
fun show(@IntRange(from = 0, to = 255) dimAmount: Int? = null) {
// PopupWindow moves the popup to align with the anchor if a fixed width
// is known before hand. Note to self: If fixedWidth ever needs to be
// removed, copy over MenuPopup.measureIndividualMenuWidth().
Expand All @@ -83,7 +89,9 @@ open class CascadePopupMenu @JvmOverloads constructor(
styler.background()?.let {
popup.contentView.background = it
}

dimAmount?.let {
applyBackgroundDim(dimAmount)
}
showMenu(menuBuilder, goingForward = true)
popup.showAsDropDown(anchor, 0, 0, gravity)
}
Expand Down Expand Up @@ -150,6 +158,33 @@ open class CascadePopupMenu @JvmOverloads constructor(
fun dismiss() =
popup.dismiss()

private fun applyBackgroundDim(@IntRange(from = 0, to = 255) dimAmount: Int) {
val dim: Drawable = ColorDrawable(Color.BLACK)
dim.setBounds(0, 0, anchor.rootView.width, anchor.rootView.height)
dim.alpha = 0
val overlay = anchor.rootView.overlay
overlay.add(dim)
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can the showing and hiding of this overlay be animated?

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Added animation for applying dim and removing.


/* FADE IN: Animating dim from 0 to dimAmount */
ObjectAnimator.ofInt(dim, "alpha", dimAmount).apply {
duration = 300
start()
}

popup.setOnDismissListener {
/* FADE OUT: Animating dim from dimAbout to 0 */
ObjectAnimator.ofInt(dim, "alpha", 0).apply {
duration = 300
addListener(object : AnimatorListenerAdapter() {
override fun onAnimationEnd(animation: Animator) {
overlay.clear()
}
})
start()
}
}
}

@get:JvmName("getDragToOpenListener")
@Deprecated("CascadeMenu doesn't support drag-to-open.", level = ERROR)
val dragToOpenListener: View.OnTouchListener
Expand Down