feat(creator): 본인 홈 FAB를 추가한다

app/src/main/java/kr/co/vividnext/sodalive/v2/creator/channel/CreatorChannelActivity.kt

@@ -53,6 +53,7 @@ class CreatorChannelActivity :
     private var statusBarHeight: Int = 0
     private var tabLayoutMediator: TabLayoutMediator? = null
     private var pageChangeCallback: ViewPager2.OnPageChangeCallback? = null
+    private var isOwnerFabExpanded: Boolean = false
     private val baseTitleBarHeight: Int by lazy { 60.dpToPx().toInt() }
 
     override val shouldApplySystemBarTopInset: Boolean = false
@@ -76,6 +77,9 @@ class CreatorChannelActivity :
         binding.ivMore.setOnClickListener { onMoreClicked() }
         binding.layoutFollowCapsule.setOnClickListener { onFollowCapsuleClicked() }
         binding.ivBell.setOnClickListener { onBellClicked() }
+        binding.ownerFabButton.setOnClickListener { expandOwnerFab() }
+        binding.ownerFabDim.setOnClickListener { collapseOwnerFab() }
+        binding.ownerFabCloseButton.setOnClickListener { collapseOwnerFab() }
         binding.tvChatButton.setOnClickListener {
             currentHeader?.characterId?.let { characterId -> homeActionDelegate?.createChatRoom(characterId) }
         }
@@ -266,6 +270,10 @@ class CreatorChannelActivity :
         }
         val callback = object : ViewPager2.OnPageChangeCallback() {
             override fun onPageSelected(position: Int) {
+                if (position != CreatorChannelTab.Home.ordinal) {
+                    isOwnerFabExpanded = false
+                }
+                updateOwnerFabVisibility()
                 updateViewPagerHeight()
             }
         }
@@ -277,6 +285,7 @@ class CreatorChannelActivity :
         currentHeader = header
         bindHeader(header)
         bindTitleBar(header)
+        updateOwnerFabVisibility()
     }
 
     override fun onCreatorChannelFollowProgressChanged(inProgress: Boolean) {
@@ -310,6 +319,24 @@ class CreatorChannelActivity :
         updateViewPagerHeight()
     }
 
+    private fun expandOwnerFab() {
+        isOwnerFabExpanded = true
+        updateOwnerFabVisibility()
+    }
+
+    private fun collapseOwnerFab() {
+        isOwnerFabExpanded = false
+        updateOwnerFabVisibility()
+    }
+
+    private fun updateOwnerFabVisibility() {
+        val shouldShowOwnerFab =
+            currentHeader?.isOwner == true && binding.viewPager.currentItem == CreatorChannelTab.Home.ordinal
+        binding.ownerFabDim.isVisible = shouldShowOwnerFab && isOwnerFabExpanded
+        binding.ownerFabExpandedContainer.isVisible = shouldShowOwnerFab && isOwnerFabExpanded
+        binding.ownerFabButton.isVisible = shouldShowOwnerFab && !isOwnerFabExpanded
+    }
+
     override fun onCreatorChannelDonationClicked() {
         val header = currentHeader ?: return
         if (header.isOwner) return