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42 lines
1.6 KiB
42 lines
1.6 KiB
7 years ago
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package com.keylesspalace.tusky;
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import android.content.Context;
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import android.content.res.Resources;
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import android.graphics.Canvas;
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import android.graphics.drawable.Drawable;
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import android.support.v7.widget.RecyclerView;
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import android.util.TypedValue;
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import android.view.View;
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import static android.util.TypedValue.COMPLEX_UNIT_DIP;
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class ConversationLineItemDecoration extends RecyclerView.ItemDecoration {
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private final Context mContext;
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private final Drawable mDivider;
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public ConversationLineItemDecoration(Context context, Drawable divider) {
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mContext = context;
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mDivider = divider;
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}
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@Override
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public void onDraw(Canvas c, RecyclerView parent, RecyclerView.State state) {
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// Fun fact: this method draws in pixels, but all layouts are in DP, so I'm using the divider's
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// own 2dp width to calculate what I want
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int dividerLeft = parent.getPaddingLeft() + mContext.getResources().getDimensionPixelSize(R.dimen.status_left_line_margin);
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int dividerRight = dividerLeft + mDivider.getIntrinsicWidth();
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int childCount = parent.getChildCount();
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for (int i = 0; i < childCount - 1; i++) {
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View child = parent.getChildAt(i);
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int dividerTop = child.getTop() + (i == 0 ? mContext.getResources().getDimensionPixelSize(R.dimen.account_avatar_margin) : 0);
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int dividerBottom = (i == childCount - 2 ? dividerTop + mContext.getResources().getDimensionPixelSize(R.dimen.account_avatar_margin) : child.getBottom());
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mDivider.setBounds(dividerLeft, dividerTop, dividerRight, dividerBottom);
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mDivider.draw(c);
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}
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}
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}
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