1 files changed, 130 insertions, 0 deletions
diff --git a/src/android/app/src/main/java/org/yuzu/yuzu_emu/ui/DividerItemDecoration.java b/src/android/app/src/main/java/org/yuzu/yuzu_emu/ui/DividerItemDecoration.java
new file mode 100644
index 000000000..f725382e6
--- /dev/null
+++ b/src/android/app/src/main/java/org/yuzu/yuzu_emu/ui/DividerItemDecoration.java
@@ -0,0 +1,130 @@
+package org.yuzu.yuzu_emu.ui;
+
+import android.content.Context;
+import android.content.res.TypedArray;
+import android.graphics.Canvas;
+import android.graphics.Rect;
+import android.graphics.drawable.Drawable;
+import android.util.AttributeSet;
+import android.view.View;
+
+import androidx.annotation.NonNull;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
+
+/**
+ * Implementation from:
+ * https://gist.github.com/lapastillaroja/858caf1a82791b6c1a36
+ */
+public class DividerItemDecoration extends RecyclerView.ItemDecoration {
+
+    private Drawable mDivider;
+    private boolean mShowFirstDivider = false;
+    private boolean mShowLastDivider = false;
+
+    public DividerItemDecoration(Context context, AttributeSet attrs) {
+        final TypedArray a = context
+                .obtainStyledAttributes(attrs, new int[]{android.R.attr.listDivider});
+        mDivider = a.getDrawable(0);
+        a.recycle();
+    }
+
+    public DividerItemDecoration(Context context, AttributeSet attrs, boolean showFirstDivider,
+                                 boolean showLastDivider) {
+        this(context, attrs);
+        mShowFirstDivider = showFirstDivider;
+        mShowLastDivider = showLastDivider;
+    }
+
+    public DividerItemDecoration(Drawable divider) {
+        mDivider = divider;
+    }
+
+    public DividerItemDecoration(Drawable divider, boolean showFirstDivider,
+                                 boolean showLastDivider) {
+        this(divider);
+        mShowFirstDivider = showFirstDivider;
+        mShowLastDivider = showLastDivider;
+    }
+
+    @Override
+    public void getItemOffsets(@NonNull Rect outRect, @NonNull View view, @NonNull RecyclerView parent,
+                               @NonNull RecyclerView.State state) {
+        super.getItemOffsets(outRect, view, parent, state);
+        if (mDivider == null) {
+            return;
+        }
+        if (parent.getChildAdapterPosition(view) < 1) {
+            return;
+        }
+
+        if (getOrientation(parent) == LinearLayoutManager.VERTICAL) {
+            outRect.top = mDivider.getIntrinsicHeight();
+        } else {
+            outRect.left = mDivider.getIntrinsicWidth();
+        }
+    }
+
+    @Override
+    public void onDrawOver(@NonNull Canvas c, @NonNull RecyclerView parent, @NonNull RecyclerView.State state) {
+        if (mDivider == null) {
+            super.onDrawOver(c, parent, state);
+            return;
+        }
+
+        // Initialization needed to avoid compiler warning
+        int left = 0, right = 0, top = 0, bottom = 0, size;
+        int orientation = getOrientation(parent);
+        int childCount = parent.getChildCount();
+
+        if (orientation == LinearLayoutManager.VERTICAL) {
+            size = mDivider.getIntrinsicHeight();
+            left = parent.getPaddingLeft();
+            right = parent.getWidth() - parent.getPaddingRight();
+        } else { //horizontal
+            size = mDivider.getIntrinsicWidth();
+            top = parent.getPaddingTop();
+            bottom = parent.getHeight() - parent.getPaddingBottom();
+        }
+
+        for (int i = mShowFirstDivider ? 0 : 1; i < childCount; i++) {
+            View child = parent.getChildAt(i);
+            RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child.getLayoutParams();
+
+            if (orientation == LinearLayoutManager.VERTICAL) {
+                top = child.getTop() - params.topMargin;
+                bottom = top + size;
+            } else { //horizontal
+                left = child.getLeft() - params.leftMargin;
+                right = left + size;
+            }
+            mDivider.setBounds(left, top, right, bottom);
+            mDivider.draw(c);
+        }
+
+        // show last divider
+        if (mShowLastDivider && childCount > 0) {
+            View child = parent.getChildAt(childCount - 1);
+            RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child.getLayoutParams();
+            if (orientation == LinearLayoutManager.VERTICAL) {
+                top = child.getBottom() + params.bottomMargin;
+                bottom = top + size;
+            } else { // horizontal
+                left = child.getRight() + params.rightMargin;
+                right = left + size;
+            }
+            mDivider.setBounds(left, top, right, bottom);
+            mDivider.draw(c);
+        }
+    }
+
+    private int getOrientation(RecyclerView parent) {
+        if (parent.getLayoutManager() instanceof LinearLayoutManager) {
+            LinearLayoutManager layoutManager = (LinearLayoutManager) parent.getLayoutManager();
+            return layoutManager.getOrientation();
+        } else {
+            throw new IllegalStateException(
+                    "DividerItemDecoration can only be used with a LinearLayoutManager.");
+        }
+    }
+}