HaikuDepot: Let BScrollView handle resizing the scrollbar bounds.

This way, it will also resize the views properly when the scrollbars
are larger.

Fixes part of #16408.

src/apps/haikudepot/ui/FeaturedPackagesView.cpp

@@ -619,7 +619,7 @@ FeaturedPackagesView::FeaturedPackagesView()
 	fPackagesView = new StackedFeaturedPackagesView();
 
 	fScrollView = new BScrollView("featured packages scroll view",
-		fPackagesView, B_FOLLOW_ALL_SIDES, 0, false, true, B_FANCY_BORDER);
+		fPackagesView, 0, false, true, B_FANCY_BORDER);
 
 	BLayoutBuilder::Group<>(this)
 		.Add(fScrollView, 1.0f);
@@ -682,37 +682,11 @@ FeaturedPackagesView::DoLayout()
 }
 
 
-void
-FeaturedPackagesView::FrameResized(float width, float height)
-{
-	BView::FrameResized(width, height);
-	_AdjustViews();
-}
-
-
 void
 FeaturedPackagesView::_AdjustViews()
 {
-	BScrollBar* scrollBar = fScrollView->ScrollBar(B_VERTICAL);
+	fScrollView->FrameResized(fScrollView->Frame().Width(),
-	BSize scrollViewSize = fScrollView->Frame().Size();
+		fScrollView->Frame().Height());
-	float width = scrollViewSize.Width() - (B_V_SCROLL_BAR_WIDTH + 4.0f);
-		// +2 for border; both sides
-	float height = scrollViewSize.Height() - 4.0;
-		// +2 for border; top and bottom
-
-	fPackagesView->ResizeTo(width, height);
-
-	if (fPackagesView->IsEmpty()) {
-		scrollBar->SetRange(0, 0);
-		scrollBar->SetProportion(1);
-	}
-	else {
-		float packagesHeight = fPackagesView->PreferredSize().Height();
-		float packagesActualHeight = fmaxf(packagesHeight, height);
-		scrollBar->SetRange(0, packagesActualHeight - scrollViewSize.Height());
-		scrollBar->SetProportion(
-			scrollViewSize.Height() / packagesActualHeight);
-	}
 }
 
 

src/apps/haikudepot/ui/FeaturedPackagesView.h

@@ -21,7 +21,6 @@ public:
 								FeaturedPackagesView();
 	virtual						~FeaturedPackagesView();
 
-	virtual	void				FrameResized(float width, float height);
 	virtual	void				DoLayout();
 
 			void				AddPackage(const PackageInfoRef& package);