StrictMode visual notification support.
Change-Id: I64a5adb683060d9649f1132414547bb3c346a2a8
diff --git a/services/java/com/android/server/StrictModeFlash.java b/services/java/com/android/server/StrictModeFlash.java
new file mode 100644
index 0000000..0a6c625
--- /dev/null
+++ b/services/java/com/android/server/StrictModeFlash.java
@@ -0,0 +1,114 @@
+/*
+ * Copyright (C) 2010 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 com.android.server; // TODO: use com.android.server.wm, once things move there
+
+import android.graphics.Canvas;
+import android.graphics.Color;
+import android.graphics.PixelFormat;
+import android.graphics.PorterDuff;
+import android.graphics.Rect;
+import android.graphics.Region;
+import android.util.DisplayMetrics;
+import android.util.Slog;
+import android.view.Display;
+import android.view.Surface;
+import android.view.SurfaceSession;
+
+class StrictModeFlash {
+ private static final String TAG = "StrictModeFlash";
+
+ Surface mSurface;
+ int mLastDW;
+ int mLastDH;
+ boolean mDrawNeeded;
+ final int mThickness = 20;
+
+ public StrictModeFlash(Display display, SurfaceSession session) {
+ final DisplayMetrics dm = new DisplayMetrics();
+ display.getMetrics(dm);
+
+ try {
+ mSurface = new Surface(session, 0, "StrictModeFlash", -1, 1, 1, PixelFormat.TRANSLUCENT, 0);
+ } catch (Surface.OutOfResourcesException e) {
+ return;
+ }
+
+ mSurface.setLayer(WindowManagerService.TYPE_LAYER_MULTIPLIER * 101); // one more than Watermark? arbitrary.
+ mSurface.setPosition(0, 0);
+ mDrawNeeded = true;
+ }
+
+ private void drawIfNeeded() {
+ if (!mDrawNeeded) {
+ return;
+ }
+ mDrawNeeded = false;
+ final int dw = mLastDW;
+ final int dh = mLastDH;
+
+ Rect dirty = new Rect(0, 0, dw, dh);
+ Canvas c = null;
+ try {
+ c = mSurface.lockCanvas(dirty);
+ } catch (IllegalArgumentException e) {
+ } catch (Surface.OutOfResourcesException e) {
+ }
+ if (c == null) {
+ return;
+ }
+
+ // Top
+ c.clipRect(new Rect(0, 0, dw, mThickness), Region.Op.REPLACE);
+ c.drawColor(Color.RED);
+ // Left
+ c.clipRect(new Rect(0, 0, mThickness, dh), Region.Op.REPLACE);
+ c.drawColor(Color.RED);
+ // Right
+ c.clipRect(new Rect(dw - mThickness, 0, dw, dh), Region.Op.REPLACE);
+ c.drawColor(Color.RED);
+ // Bottom
+ c.clipRect(new Rect(0, dh - mThickness, dw, dh), Region.Op.REPLACE);
+ c.drawColor(Color.RED);
+
+ mSurface.unlockCanvasAndPost(c);
+ }
+
+ // Note: caller responsible for being inside
+ // Surface.openTransaction() / closeTransaction()
+ public void setVisibility(boolean on) {
+ if (mSurface == null) {
+ return;
+ }
+ drawIfNeeded();
+ if (on) {
+ mSurface.show();
+ } else {
+ mSurface.hide();
+ }
+ }
+
+ void positionSurface(int dw, int dh) {
+ if (mLastDW == dw && mLastDH == dh) {
+ return;
+ }
+ mLastDW = dw;
+ mLastDH = dh;
+ mSurface.setSize(dw, dh);
+ mDrawNeeded = true;
+ }
+
+}