add some ripple magic to flavor image

org.fox.ttrss/src/main/java/org/fox/ttrss/util/EnlargingImageView.java

@@ -34,7 +34,7 @@ import android.view.View;
  * @author Tomáš Procházka &lt;<a href="mailto:tomas.prochazka@inmite.eu">tomas.prochazka@gmail.com</a>&gt;
  * @version $Revision: 0$ ($Date: 6.6.2011 18:16:52$)
  */
-public class EnlargingImageView extends android.widget.ImageView {
+public class EnlargingImageView extends ForegroundImageView {
 
 	private int mDrawableWidth;
 	private int mDrawableHeight;

org.fox.ttrss/src/main/java/org/fox/ttrss/util/ForegroundImageView.java

@@ -0,0 +1,121 @@
+package org.fox.ttrss.util;
+
+// https://gist.github.com/JakeWharton/0a251d67649305d84e8a
+
+import android.content.Context;
+import android.content.res.TypedArray;
+import android.graphics.Canvas;
+import android.graphics.drawable.Drawable;
+import android.os.Build;
+import android.util.AttributeSet;
+import android.widget.ImageView;
+
+import org.fox.ttrss.R;
+
+public class ForegroundImageView extends ImageView {
+    private Drawable foreground;
+
+    public ForegroundImageView(Context context) {
+        this(context, null);
+    }
+
+    public ForegroundImageView(Context context, AttributeSet attrs) {
+        this(context, attrs, 0);
+    }
+
+    public ForegroundImageView(Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+
+        TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.ForegroundImageView);
+        Drawable foreground = a.getDrawable(R.styleable.ForegroundImageView_android_foreground);
+        if (foreground != null) {
+            setForeground(foreground);
+        }
+        a.recycle();
+    }
+
+    /**
+     * Supply a drawable resource that is to be rendered on top of all of the child
+     * views in the frame layout.
+     *
+     * @param drawableResId The drawable resource to be drawn on top of the children.
+     */
+    public void setForegroundResource(int drawableResId) {
+        setForeground(getContext().getResources().getDrawable(drawableResId));
+    }
+
+    /**
+     * Supply a Drawable that is to be rendered on top of all of the child
+     * views in the frame layout.
+     *
+     * @param drawable The Drawable to be drawn on top of the children.
+     */
+    public void setForeground(Drawable drawable) {
+        if (foreground == drawable) {
+            return;
+        }
+        if (foreground != null) {
+            foreground.setCallback(null);
+            unscheduleDrawable(foreground);
+        }
+
+        foreground = drawable;
+
+        if (drawable != null) {
+            drawable.setCallback(this);
+            if (drawable.isStateful()) {
+                drawable.setState(getDrawableState());
+            }
+        }
+        requestLayout();
+        invalidate();
+    }
+
+    @Override protected boolean verifyDrawable(Drawable who) {
+        return super.verifyDrawable(who) || who == foreground;
+    }
+
+    @Override public void jumpDrawablesToCurrentState() {
+        super.jumpDrawablesToCurrentState();
+        if (foreground != null) foreground.jumpToCurrentState();
+    }
+
+    @Override protected void drawableStateChanged() {
+        super.drawableStateChanged();
+        if (foreground != null && foreground.isStateful()) {
+            foreground.setState(getDrawableState());
+        }
+    }
+
+    @Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
+        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
+        if (foreground != null) {
+            foreground.setBounds(0, 0, getMeasuredWidth(), getMeasuredHeight());
+            invalidate();
+        }
+    }
+
+    @Override protected void onSizeChanged(int w, int h, int oldw, int oldh) {
+        super.onSizeChanged(w, h, oldw, oldh);
+        if (foreground != null) {
+            foreground.setBounds(0, 0, w, h);
+            invalidate();
+        }
+    }
+
+    @Override public void draw(Canvas canvas) {
+        super.draw(canvas);
+
+        if (foreground != null) {
+            foreground.draw(canvas);
+        }
+    }
+
+    @Override public void drawableHotspotChanged(float x, float y) {
+        super.drawableHotspotChanged(x, y);
+
+        if (foreground != null && android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
+            foreground.setHotspot(x, y);
+        }
+    }
+}

org.fox.ttrss/src/main/res/layout/headlines_row.xml

@@ -44,6 +44,7 @@
 
                     <org.fox.ttrss.util.EnlargingImageView
                         android:id="@+id/flavor_image"
+                        android:foreground="@drawable/ripple"
                         android:layout_width="match_parent"
                         android:layout_height="wrap_content"
                         android:layout_centerHorizontal="true"

org.fox.ttrss/src/main/res/layout/headlines_row_unread.xml

@@ -45,6 +45,7 @@
 
                     <org.fox.ttrss.util.EnlargingImageView
                         android:id="@+id/flavor_image"
+                        android:foreground="@drawable/ripple"
                         android:layout_width="match_parent"
                         android:layout_height="wrap_content"
                         android:layout_centerHorizontal="true"

org.fox.ttrss/src/main/res/values/attrs.xml

@@ -49,4 +49,7 @@
         <attr format="reference|color" name="insetForeground">
         </attr></declare-styleable>
     <attr name="drawer_header" format="reference" />
+    <declare-styleable name="ForegroundImageView">
+        <attr name="android:foreground"/>
+    </declare-styleable>
 </resources>