Add Preference

app/src/main/java/com/hippo/widget/IndicatingListView.java

@@ -0,0 +1,77 @@
+package com.hippo.widget;
+
+import android.content.Context;
+import android.graphics.Canvas;
+import android.graphics.Paint;
+import android.graphics.Rect;
+import android.support.annotation.NonNull;
+import android.util.AttributeSet;
+import android.widget.ListView;
+
+import com.hippo.ehviewer.R;
+
+public class IndicatingListView extends ListView {
+
+    private int mIndicatorHeight;
+
+    private Paint mPaint = new Paint();
+    private Rect mTemp = new Rect();
+
+    public IndicatingListView(Context context) {
+        super(context);
+        init(context);
+    }
+
+    public IndicatingListView(Context context, AttributeSet attrs) {
+        super(context, attrs);
+        init(context);
+    }
+
+    public IndicatingListView(Context context, AttributeSet attrs, int defStyleAttr) {
+        super(context, attrs, defStyleAttr);
+        init(context);
+    }
+
+    private void init(Context context) {
+        mIndicatorHeight = context.getResources().getDimensionPixelOffset(R.dimen.scroll_view_indicator_height);
+        mPaint.setColor(context.getResources().getColor(R.color.scroll_view_indicator));
+        mPaint.setStyle(Paint.Style.FILL);
+    }
+
+    private void fillTopIndicatorDrawRect() {
+        mTemp.set(0, 0, getWidth(), mIndicatorHeight);
+    }
+
+    private void fillBottomIndicatorDrawRect() {
+        mTemp.set(0, getHeight() - mIndicatorHeight, getWidth(), getHeight());
+    }
+
+    private boolean needShowTopIndicator() {
+        return canScrollVertically(-1);
+    }
+
+    private boolean needShowBottomIndicator() {
+        return canScrollVertically(1);
+    }
+
+    @Override
+    public void draw(@NonNull Canvas canvas) {
+        super.draw(canvas);
+
+        final int restoreCount = canvas.save();
+        canvas.translate(getScrollX(), getScrollY());
+
+        // Draw top indicator
+        if (needShowTopIndicator()) {
+            fillTopIndicatorDrawRect();
+            canvas.drawRect(mTemp, mPaint);
+        }
+        // Draw bottom indicator
+        if (needShowBottomIndicator()) {
+            fillBottomIndicatorDrawRect();
+            canvas.drawRect(mTemp, mPaint);
+        }
+
+        canvas.restoreToCount(restoreCount);
+    }
+}

app/src/main/java/com/hippo/widget/SimpleImageView.java

@@ -51,6 +51,7 @@ public class SimpleImageView extends View implements Drawable.Callback {
         setWillNotCacheDrawing(true);
     }
 
+    @SuppressWarnings("deprecation")
     public void setDrawable(@DrawableRes int resId) {
         setDrawable(getContext().getResources().getDrawable(resId));
     }

app/src/main/java/com/hippo/widget/SolidLinearLayout.java

@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2015 Hippo Seven
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.hippo.widget;
+
+import android.content.Context;
+import android.util.AttributeSet;
+import android.view.MotionEvent;
+import android.widget.LinearLayout;
+
+public class SolidLinearLayout extends LinearLayout {
+
+    public SolidLinearLayout(Context context) {
+        super(context);
+    }
+
+    public SolidLinearLayout(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    public SolidLinearLayout(Context context, AttributeSet attrs, int defStyleAttr) {
+        super(context, attrs, defStyleAttr);
+    }
+
+    @Override
+    public boolean onInterceptTouchEvent(MotionEvent ev) {
+        return true;
+    }
+}

app/src/main/java/com/hippo/widget/recyclerview/EasyRecyclerView.java

@@ -166,6 +166,7 @@ public class EasyRecyclerView extends RecyclerView {
      */
     int mSelectionBottomPadding = 0;
 
+    private OnDrawSelectorListener mOnDrawSelectorListener;
 
     public EasyRecyclerView(Context context) {
         super(context);
@@ -278,14 +279,20 @@ public class EasyRecyclerView extends RecyclerView {
             mGroupFlags &= ~CLIP_TO_PADDING_MASK;
         }
 
+        // TODO disable selector drawable state change when need not to draw selector
+        boolean drawSelector = mOnDrawSelectorListener == null ||
+                mSelectorPosition < 0 ||
+                mSelectorPosition >= mAdapter.getItemCount() ||
+                mOnDrawSelectorListener.beforeDrawSelector(mSelectorPosition);
         final boolean drawSelectorOnTop = mDrawSelectorOnTop;
-        if (!drawSelectorOnTop) {
+
+        if (drawSelector && !drawSelectorOnTop) {
             drawSelector(canvas);
         }
 
         super.dispatchDraw(canvas);
 
-        if (drawSelectorOnTop) {
+        if (drawSelector && drawSelectorOnTop) {
             drawSelector(canvas);
         }
 
@@ -314,6 +321,10 @@ public class EasyRecyclerView extends RecyclerView {
         }
     }
 
+    public void setOnDrawSelectorListener(OnDrawSelectorListener listener) {
+        mOnDrawSelectorListener = listener;
+    }
+
     /**
      * Controls whether the selection highlight drawable should be drawn on top of the item or
      * behind it.
@@ -351,6 +362,14 @@ public class EasyRecyclerView extends RecyclerView {
         return mSelector;
     }
 
+    private void cancelDrawingSelector() {
+        Rect rect = mSelectorRect;
+        rect.left = 0;
+        rect.top = 0;
+        rect.right = 0;
+        rect.bottom = 0;
+    }
+
     void updateSelectorState() {
         if (mSelector != null) {
             if (shouldShowSelector()) {
@@ -656,6 +675,14 @@ public class EasyRecyclerView extends RecyclerView {
         }
     }
 
+    public float getTouchStartX() {
+        return mStartX;
+    }
+
+    public float getTouchStartY() {
+        return mStartY;
+    }
+
     @Override
     public boolean onTouchEvent(MotionEvent ev) {
         if (!isEnabled()) {
@@ -733,6 +760,7 @@ public class EasyRecyclerView extends RecyclerView {
                 setPressed(false);
             }
             updateSelectorState();
+            cancelDrawingSelector();
         }
     }
 
@@ -1215,6 +1243,19 @@ public class EasyRecyclerView extends RecyclerView {
         boolean onItemLongClick(EasyRecyclerView parent, View view, int position, long id);
     }
 
+    /**
+     * Interface definition for a callback to be invoked when draw selector.
+     */
+    public interface OnDrawSelectorListener {
+        /**
+         * Callback method to be invoked before selector draw.
+         *
+         * @param position The EasyRecyclerView where the click happened
+         * @return true if need draw selector, false otherwise
+         */
+        boolean beforeDrawSelector(int position);
+    }
+
     /**
      * A MultiChoiceModeListener receives events for {@link android.widget.AbsListView#CHOICE_MODE_MULTIPLE_MODAL}.
      * It acts as the {@link android.support.v7.view.ActionMode.Callback} for the selection mode and also receives

app/src/main/java/com/hippo/widget/recyclerview/SimpleHolder.java

@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2015 Hippo Seven
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.hippo.widget.recyclerview;
+
+import android.support.v7.widget.RecyclerView;
+import android.view.View;
+
+public class SimpleHolder extends RecyclerView.ViewHolder {
+
+    public SimpleHolder(View itemView) {
+        super(itemView);
+    }
+}