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Removing unused background padding from base recycler view

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Change-Id: I36f68a143df8f3668074b3539aa9af170a91e511
This commit is contained in:
Sunny Goyal
2016-10-18 14:23:46 +01:00
parent d2959b9ee7
commit 00e106880d
5 changed files with 18 additions and 71 deletions
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32
src/com/android/launcher3/BaseRecyclerView.java
View File

@@ -18,7 +18,6 @@ package com.android.launcher3;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Rect;
import android.support.v7.widget.RecyclerView;
import android.util.AttributeSet;
import android.view.MotionEvent;
@@ -48,7 +47,6 @@ public abstract class BaseRecyclerView extends RecyclerView
private int mDownX;
private int mDownY;
private int mLastY;
protected Rect mBackgroundPadding = new Rect();
public BaseRecyclerView(Context context) {
this(context, null);
@@ -164,21 +162,11 @@ public abstract class BaseRecyclerView extends RecyclerView
return false;
}
public void updateBackgroundPadding(Rect padding) {
mBackgroundPadding.set(padding);
}
public Rect getBackgroundPadding() {
return mBackgroundPadding;
}
/**
* Returns the visible height of the recycler view:
* VisibleHeight = View height - top padding - bottom padding
* Returns the height of the fast scroll bar
*/
protected int getVisibleHeight() {
int visibleHeight = getHeight() - mBackgroundPadding.top - mBackgroundPadding.bottom;
return visibleHeight;
protected int getScrollbarTrackHeight() {
return getHeight();
}
/**
@@ -192,7 +180,7 @@ public abstract class BaseRecyclerView extends RecyclerView
* AvailableScrollBarHeight = Total height of the visible view - thumb height
*/
protected int getAvailableScrollBarHeight() {
int availableScrollBarHeight = getVisibleHeight() - mScrollbar.getThumbHeight();
int availableScrollBarHeight = getScrollbarTrackHeight() - mScrollbar.getThumbHeight();
return availableScrollBarHeight;
}
@@ -203,13 +191,6 @@ public abstract class BaseRecyclerView extends RecyclerView
return defaultTrackColor;
}
/**
* Returns the inactive thumb color, can be overridden by each subclass.
*/
public int getFastScrollerThumbInactiveColor(int defaultInactiveThumbColor) {
return defaultInactiveThumbColor;
}
/**
* Returns the scrollbar for this recycler view.
*/
@@ -234,7 +215,6 @@ public abstract class BaseRecyclerView extends RecyclerView
protected void synchronizeScrollBarThumbOffsetToViewScroll(int scrollY,
int availableScrollHeight) {
// Only show the scrollbar if there is height to be scrolled
int availableScrollBarHeight = getAvailableScrollBarHeight();
if (availableScrollHeight <= 0) {
mScrollbar.setThumbOffsetY(-1);
return;
@@ -243,8 +223,8 @@ public abstract class BaseRecyclerView extends RecyclerView
// Calculate the current scroll position, the scrollY of the recycler view accounts for the
// view padding, while the scrollBarY is drawn right up to the background padding (ignoring
// padding)
int scrollBarY = mBackgroundPadding.top +
(int) (((float) scrollY / availableScrollHeight) * availableScrollBarHeight);
int scrollBarY =
(int) (((float) scrollY / availableScrollHeight) * getAvailableScrollBarHeight());
// Calculate the position and size of the scroll bar
mScrollbar.setThumbOffsetY(scrollBarY);