package io.hefuyi.listener.widget;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Rect;
import android.graphics.drawable.Drawable;
import android.support.v4.content.ContextCompat;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.View;
import io.hefuyi.listener.R;
import io.hefuyi.listener.util.ATEUtil;
import io.hefuyi.listener.util.DensityUtil;
public class DividerItemDecoration extends RecyclerView.ItemDecoration {
private static final int HORIZONTAL_LIST = LinearLayoutManager.HORIZONTAL;
public static final int VERTICAL_LIST = LinearLayoutManager.VERTICAL;
private static final int[] ATTRS = new int[]{
android.R.attr.listDivider
};
private Drawable mDivider;
private int mOrientation;
private boolean withHeader;
public DividerItemDecoration(Context context, int orientation, boolean withHeader) {
final TypedArray a = context.obtainStyledAttributes(ATTRS);
if (ATEUtil.getATEKey(context).equals("light_theme")) {
mDivider = ContextCompat.getDrawable(context, R.drawable.item_divider_black);
} else {
mDivider = ContextCompat.getDrawable(context, R.drawable.item_divider_white);
}
this.withHeader = withHeader;
a.recycle();
setOrientation(orientation);
}
public DividerItemDecoration(Context context, int orientation, int resId) {
mDivider = ContextCompat.getDrawable(context, resId);
setOrientation(orientation);
}
private void setOrientation(int orientation) {
if (orientation != HORIZONTAL_LIST && orientation != VERTICAL_LIST) {
throw new IllegalArgumentException("invalid orientation");
}
mOrientation = orientation;
}
@Override
public void onDraw(Canvas c, RecyclerView parent) {
if (mOrientation == VERTICAL_LIST) {
drawVertical(c, parent);
} else {
drawHorizontal(c, parent);
}
}
private void drawVertical(Canvas c, RecyclerView parent) {
int left = parent.getPaddingLeft();
final int right = parent.getWidth() - parent.getPaddingRight();
final int childCount = parent.getChildCount();
for (int i = 0; i < childCount-1; i++) {
final View child = parent.getChildAt(i);
final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child
.getLayoutParams();
final int top = child.getBottom() + params.bottomMargin;
final int bottom = top + mDivider.getIntrinsicHeight();
if (i != 0||(!withHeader)) {
left = parent.getPaddingLeft() + DensityUtil.dip2px(parent.getContext(), 72);
}
mDivider.setBounds(left, top, right, bottom);
mDivider.draw(c);
}
}
private void drawHorizontal(Canvas c, RecyclerView parent) {
final int top = parent.getPaddingTop();
final int bottom = parent.getHeight() - parent.getPaddingBottom();
final int childCount = parent.getChildCount();
for (int i = 0; i < childCount; i++) {
final View child = parent.getChildAt(i);
final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child
.getLayoutParams();
final int left = child.getRight() + params.rightMargin;
final int right = left + mDivider.getIntrinsicHeight();
mDivider.setBounds(left, top, right, bottom);
mDivider.draw(c);
}
}
@Override
public void getItemOffsets(Rect outRect, int itemPosition, RecyclerView parent) {
if (mOrientation == VERTICAL_LIST) {
outRect.set(0, 0, 0, mDivider.getIntrinsicHeight());
} else {
outRect.set(0, 0, mDivider.getIntrinsicWidth(), 0);
}
}
}