plugins: Move VolumeToolTipView into common lib

Change-Id: I83a36610bbce1d0892953b45a16970edb788d85c

VolumePluginCommon/res/layout/volume_tool_tip_view.xml

@@ -16,7 +16,7 @@
   ~ limitations under the License
   -->
 
-<com.android.systemui.volume.VolumeToolTipView
+<co.potatoproject.plugin.volume.common.VolumeToolTipView
     xmlns:android="http://schemas.android.com/apk/res/android"
     android:id="@+id/tooltip_view"
     android:layout_height="wrap_content"
@@ -61,4 +61,4 @@
         android:layout_marginLeft="-2dp"
         android:layout_gravity="center_vertical"/>
 
-</com.android.systemui.volume.VolumeToolTipView>
+</co.potatoproject.plugin.volume.common.VolumeToolTipView>

VolumePluginCommon/src/co/potatoproject/plugin/volume/common/TriangleShape.java

@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * 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
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * 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 co.potatoproject.plugin.volume.common;
+
+import android.graphics.Outline;
+import android.graphics.Path;
+import android.graphics.drawable.shapes.PathShape;
+
+/**
+ * Wrapper around {@link android.graphics.drawable.shapes.PathShape}
+ * that creates a shape with a triangular path (pointing up or down).
+ */
+public class TriangleShape extends PathShape {
+    private Path mTriangularPath;
+
+    public TriangleShape(Path path, float stdWidth, float stdHeight) {
+        super(path, stdWidth, stdHeight);
+        mTriangularPath = path;
+    }
+
+    public static TriangleShape create(float width, float height, boolean isPointingUp) {
+        Path triangularPath = new Path();
+        if (isPointingUp) {
+            triangularPath.moveTo(0, height);
+            triangularPath.lineTo(width, height);
+            triangularPath.lineTo(width / 2, 0);
+            triangularPath.close();
+        } else {
+            triangularPath.moveTo(0, 0);
+            triangularPath.lineTo(width / 2, height);
+            triangularPath.lineTo(width, 0);
+            triangularPath.close();
+        }
+        return new TriangleShape(triangularPath, width, height);
+    }
+
+    /** Create an arrow TriangleShape that points to the left or the right */
+    public static TriangleShape createHorizontal(
+            float width, float height, boolean isPointingLeft) {
+        Path triangularPath = new Path();
+        if (isPointingLeft) {
+            triangularPath.moveTo(0, height / 2);
+            triangularPath.lineTo(width, height);
+            triangularPath.lineTo(width, 0);
+            triangularPath.close();
+        } else {
+            triangularPath.moveTo(0, height);
+            triangularPath.lineTo(width, height / 2);
+            triangularPath.lineTo(0, 0);
+            triangularPath.close();
+        }
+        return new TriangleShape(triangularPath, width, height);
+    }
+
+    @Override
+    public void getOutline(Outline outline) {
+        outline.setConvexPath(mTriangularPath);
+    }
+}

VolumePluginCommon/src/co/potatoproject/plugin/volume/common/VolumeToolTipView.java

@@ -0,0 +1,85 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ * Copyright (C) 2020 The Potato Open Sauce Project
+ *
+ * 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
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * 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 co.potatoproject.plugin.volume.common;
+
+import android.content.Context;
+import android.content.pm.PackageManager.NameNotFoundException;
+import android.content.res.Resources;
+import android.graphics.CornerPathEffect;
+import android.graphics.Paint;
+import android.graphics.drawable.ShapeDrawable;
+import android.util.AttributeSet;
+import android.util.TypedValue;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.LinearLayout;
+
+import androidx.core.content.ContextCompat;
+
+/**
+ * Tool tip view that draws an arrow that points to the volume dialog.
+ */
+public class VolumeToolTipView extends LinearLayout {
+    private SysUIR mSysUIR;
+
+    public VolumeToolTipView(Context context) {
+        this(context, null);
+    }
+
+    public VolumeToolTipView(Context context, AttributeSet attrs) {
+        this(context, attrs, 0);
+    }
+
+    public VolumeToolTipView(Context context, AttributeSet attrs, int defStyleAttr) {
+        this(context, attrs, defStyleAttr, 0);
+    }
+
+    public VolumeToolTipView(Context context, AttributeSet attrs, int defStyleAttr,
+            int defStyleRes) {
+        super(context, attrs, defStyleAttr, defStyleRes);
+        mSysUIR = new SysUIR(context);
+    }
+
+    @Override
+    protected void onFinishInflate() {
+        super.onFinishInflate();
+        drawArrow();
+    }
+
+    private void drawArrow() {
+        Resources res;
+        try {
+            res = getContext().getPackageManager().getResourcesForApplication("com.android.systemui");
+        } catch (NameNotFoundException e) {
+            res = getContext().getResources();
+        }
+        View arrowView = findViewById(R.id.arrow);
+        ViewGroup.LayoutParams arrowLp = arrowView.getLayoutParams();
+        ShapeDrawable arrowDrawable = new ShapeDrawable(TriangleShape.createHorizontal(
+                arrowLp.width, arrowLp.height, false));
+        Paint arrowPaint = arrowDrawable.getPaint();
+        TypedValue typedValue = new TypedValue();
+        getContext().getTheme().resolveAttribute(android.R.attr.colorAccent, typedValue, true);
+        arrowPaint.setColor(ContextCompat.getColor(getContext(), typedValue.resourceId));
+        // The corner path effect won't be reflected in the shadow, but shouldn't be noticeable.
+        arrowPaint.setPathEffect(new CornerPathEffect(
+                res.getDimension(mSysUIR.dimen("volume_tool_tip_arrow_corner_radius"))));
+        arrowView.setBackground(arrowDrawable);
+
+    }
+}