"Show taps" cosmetic skin for the "Pointer location" Android 14 developer mode widget

pointerlocationisshowtapsclone.patch

diff --git a/core/java/com/android/internal/widget/PointerLocationView.java b/core/java/com/android/internal/widget/PointerLocationView.java
index e65b4b65..6e6a9517 100644
--- a/core/java/com/android/internal/widget/PointerLocationView.java
+++ b/core/java/com/android/internal/widget/PointerLocationView.java
@@ -18,7 +18,10 @@ package com.android.internal.widget;
 
 import android.compat.annotation.UnsupportedAppUsage;
 import android.content.Context;
+import android.content.res.Resources;
+import android.content.res.TypedArray;
 import android.content.res.Configuration;
+import android.content.res.XmlResourceParser;
 import android.graphics.Canvas;
 import android.graphics.Insets;
 import android.graphics.Paint;
@@ -26,6 +29,8 @@ import android.graphics.Paint.FontMetricsInt;
 import android.graphics.Path;
 import android.graphics.RectF;
 import android.graphics.Region;
+import android.graphics.drawable.AnimationDrawable;
+import android.graphics.drawable.Drawable;
 import android.hardware.input.InputManager;
 import android.hardware.input.InputManager.InputDeviceListener;
 import android.os.Handler;
@@ -47,6 +52,9 @@ import android.view.WindowInsets;
 import android.view.WindowManagerGlobal;
 import android.view.WindowManagerPolicyConstants.PointerEventListener;
 
+import com.android.internal.R;
+import com.android.internal.util.XmlUtils;
+
 public class PointerLocationView extends View implements InputDeviceListener,
         PointerEventListener {
     private static final String TAG = "Pointer";
@@ -165,6 +173,10 @@ public class PointerLocationView extends View implements InputDeviceListener,
 
     private float mDensity;
 
+    private Drawable mPointerTexture;
+    private int mPointerRadius;
+    private boolean mShowPointerLocationIsShowTapsClone = true;
+
     public PointerLocationView(Context c) {
         super(c);
         setFocusableInTouchMode(true);
@@ -218,6 +230,40 @@ public class PointerLocationView extends View implements InputDeviceListener,
         } else {
             mAltVelocity = null;
         }
+
+        // This code is based on getSystemIcon() and loadResource() from frameworks/base/core/java/android/view/PointerIcon.java,
+        // which is the boilerplate that spawns the desirable dot-shaped cursor texture used by the "Show Taps" mode.
+        final TypedArray pointerStyledAttributes = c.obtainStyledAttributes(null, R.styleable.Pointer, 0, R.style.Pointer);
+        final int resourceId = pointerStyledAttributes.getResourceId(R.styleable.Pointer_pointerIconSpotTouch, -1);
+        pointerStyledAttributes.recycle();
+        if (resourceId == -1) {
+            Log.w(TAG, "Missing theme resources for pointer icon TYPE_SPOT_TOUCH");
+            mShowPointerLocationIsShowTapsClone = false;
+        }
+        final Resources resources = c.getResources();
+        final XmlResourceParser parser = resources.getXml(resourceId);
+        int bitmapRes = 0;
+        try {
+            XmlUtils.beginDocument(parser, "pointer-icon");
+            final TypedArray pointerIconAttributes = resources.obtainAttributes(parser, R.styleable.PointerIcon);
+            bitmapRes = pointerIconAttributes.getResourceId(R.styleable.PointerIcon_bitmap, 0);
+            pointerIconAttributes.recycle();
+        } catch (Exception ex) {
+            Log.w(TAG, "Exception parsing pointer icon resource.");
+            mShowPointerLocationIsShowTapsClone = false;
+        } finally {
+            parser.close();
+        }
+        if (bitmapRes == 0) {
+            Log.w(TAG, "<pointer-icon> is missing bitmap attribute.");
+            mShowPointerLocationIsShowTapsClone = false;
+        }
+        mPointerTexture = c.getDrawable(bitmapRes);
+        if (mPointerTexture instanceof AnimationDrawable) {
+            final AnimationDrawable animationDrawable = (AnimationDrawable)mPointerTexture;
+            mPointerTexture = animationDrawable.getFrame(0);
+        }
+        mPointerRadius = mPointerTexture.getIntrinsicWidth() / 2;
     }
 
     public void setPrintCoords(boolean state) {
@@ -285,6 +331,24 @@ public class PointerLocationView extends View implements InputDeviceListener,
     protected void onDraw(Canvas canvas) {
         final int NP = mPointers.size();
 
+        if (mShowPointerLocationIsShowTapsClone) {
+            // draw the same texture that is used by the "Show Taps" mode
+            for (int p = 0; p < NP; p++) {
+                final PointerState ps = mPointers.valueAt(p);
+                if (mCurDown && ps.mCurDown) {
+                    mPointerTexture.setBounds((int)ps.mCoords.x - mPointerRadius,
+                                              (int)ps.mCoords.y - mPointerRadius,
+                                              (int)ps.mCoords.x + mPointerRadius,
+                                              (int)ps.mCoords.y + mPointerRadius);
+                    mPointerTexture.draw(canvas);
+                }
+            }
+            // finish frame for this view without rendering any of the undesired lines
+            return;
+        }
+
+        // below this point is the original renderer for the "Show Pointer Location" mode
+
         if (!mSystemGestureExclusion.isEmpty()) {
             mSystemGestureExclusionPath.reset();
             mSystemGestureExclusion.getBoundaryPath(mSystemGestureExclusionPath);