Partial screenshot (6ca619fe) · Commits · e / os / android_frameworks_base

core/java/android/view/WindowManager.java

+20 −0

Original line number	Diff line number	Diff line
		@@ -134,6 +134,18 @@ public interface WindowManager extends ViewManager {
		void onKeyboardShortcutsReceived(List<KeyboardShortcutGroup> result);
		}

		/**
		* Message for taking fullscreen screenshot
		* @hide
		*/
		final int TAKE_SCREENSHOT_FULLSCREEN = 1;

		/**
		* Message for taking screenshot of selected region.
		* @hide
		*/
		final int TAKE_SCREENSHOT_SELECTED_REGION = 2;

		/**
		* @hide
		*/
		@@ -269,6 +281,7 @@ public interface WindowManager extends ViewManager {
		@ViewDebug.IntToString(from = TYPE_VOICE_INTERACTION_STARTING, to = "TYPE_VOICE_INTERACTION_STARTING"),
		@ViewDebug.IntToString(from = TYPE_DOCK_DIVIDER, to = "TYPE_DOCK_DIVIDER"),
		@ViewDebug.IntToString(from = TYPE_QS_DIALOG, to = "TYPE_QS_DIALOG"),
		@ViewDebug.IntToString(from = TYPE_SCREENSHOT, to = "TYPE_SCREENSHOT")
		})
		public int type;

		@@ -621,6 +634,13 @@ public interface WindowManager extends ViewManager {
		*/
		public static final int TYPE_QS_DIALOG = FIRST_SYSTEM_WINDOW+35;

		/**
		* Window type: shares similar characteristics with {@link #TYPE_DREAM}. The layer is
		* reserved for screenshot region selection.
		* @hide
		*/
		public static final int TYPE_SCREENSHOT = FIRST_SYSTEM_WINDOW + 36;

		/**
		* End of types of system windows.
		*/

packages/SystemUI/res/layout/global_screenshot.xml

+6 −0

Original line number	Diff line number	Diff line
		@@ -33,4 +33,10 @@
		android:layout_height="match_parent"
		android:src="@android:color/white"
		android:visibility="gone" />
		<com.android.systemui.screenshot.ScreenshotSelectorView
		android:id="@+id/global_screenshot_selector"
		android:layout_width="match_parent"
		android:layout_height="match_parent"
		android:visibility="gone"
		android:pointerShape="crosshair"/>
		</FrameLayout>

packages/SystemUI/src/com/android/systemui/screenshot/GlobalScreenshot.java

+81 −2

Original line number	Diff line number	Diff line
		@@ -39,6 +39,7 @@ import android.graphics.Matrix;
		import android.graphics.Paint;
		import android.graphics.PixelFormat;
		import android.graphics.PointF;
		import android.graphics.Rect;
		import android.media.MediaActionSound;
		import android.net.Uri;
		import android.os.AsyncTask;
		@@ -407,6 +408,7 @@ class GlobalScreenshot {

		private Bitmap mScreenBitmap;
		private View mScreenshotLayout;
		private ScreenshotSelectorView mScreenshotSelectorView;
		private ImageView mBackgroundView;
		private ImageView mScreenshotView;
		private ImageView mScreenshotFlash;
		@@ -437,7 +439,11 @@ class GlobalScreenshot {
		mBackgroundView = (ImageView) mScreenshotLayout.findViewById(R.id.global_screenshot_background);
		mScreenshotView = (ImageView) mScreenshotLayout.findViewById(R.id.global_screenshot);
		mScreenshotFlash = (ImageView) mScreenshotLayout.findViewById(R.id.global_screenshot_flash);
		mScreenshotSelectorView = (ScreenshotSelectorView) mScreenshotLayout.findViewById(
		R.id.global_screenshot_selector);
		mScreenshotLayout.setFocusable(true);
		mScreenshotSelectorView.setFocusable(true);
		mScreenshotSelectorView.setFocusableInTouchMode(true);
		mScreenshotLayout.setOnTouchListener(new View.OnTouchListener() {
		@Override
		public boolean onTouch(View v, MotionEvent event) {
		@@ -449,7 +455,7 @@ class GlobalScreenshot {
		// Setup the window that we are going to use
		mWindowLayoutParams = new WindowManager.LayoutParams(
		ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT, 0, 0,
		WindowManager.LayoutParams.TYPE_SECURE_SYSTEM_OVERLAY,
		WindowManager.LayoutParams.TYPE_SCREENSHOT,
		WindowManager.LayoutParams.FLAG_FULLSCREEN
		\| WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED
		\| WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN
		@@ -525,7 +531,8 @@ class GlobalScreenshot {
		/**
		* Takes a screenshot of the current display and shows an animation.
		*/
		void takeScreenshot(Runnable finisher, boolean statusBarVisible, boolean navBarVisible) {
		void takeScreenshot(Runnable finisher, boolean statusBarVisible, boolean navBarVisible,
		int x, int y, int width, int height) {
		// We need to orient the screenshot correctly (and the Surface api seems to take screenshots
		// only in the natural orientation of the device :!)
		mDisplay.getRealMetrics(mDisplayMetrics);
		@@ -565,6 +572,13 @@ class GlobalScreenshot {
		mScreenBitmap = ss;
		}

		if (width != mDisplayMetrics.widthPixels \|\| height != mDisplayMetrics.heightPixels) {
		// Crop the screenshot to selected region
		Bitmap cropped = Bitmap.createBitmap(mScreenBitmap, x, y, width, height);
		mScreenBitmap.recycle();
		mScreenBitmap = cropped;
		}

		// Optimizations
		mScreenBitmap.setHasAlpha(false);
		mScreenBitmap.prepareToDraw();
		@@ -574,6 +588,71 @@ class GlobalScreenshot {
		statusBarVisible, navBarVisible);
		}

		void takeScreenshot(Runnable finisher, boolean statusBarVisible, boolean navBarVisible) {
		mDisplay.getRealMetrics(mDisplayMetrics);
		takeScreenshot(finisher, statusBarVisible, navBarVisible, 0, 0, mDisplayMetrics.widthPixels,
		mDisplayMetrics.heightPixels);
		}

		/**
		* Displays a screenshot selector
		*/
		void takeScreenshotPartial(final Runnable finisher, final boolean statusBarVisible,
		final boolean navBarVisible) {
		mWindowManager.addView(mScreenshotLayout, mWindowLayoutParams);
		mScreenshotSelectorView.setOnTouchListener(new View.OnTouchListener() {
		@Override
		public boolean onTouch(View v, MotionEvent event) {
		ScreenshotSelectorView view = (ScreenshotSelectorView) v;
		switch (event.getAction()) {
		case MotionEvent.ACTION_DOWN:
		view.startSelection((int) event.getX(), (int) event.getY());
		return true;
		case MotionEvent.ACTION_MOVE:
		view.updateSelection((int) event.getX(), (int) event.getY());
		return true;
		case MotionEvent.ACTION_UP:
		view.setVisibility(View.GONE);
		mWindowManager.removeView(mScreenshotLayout);
		final Rect rect = view.getSelectionRect();
		if (rect != null) {
		if (rect.width() != 0 && rect.height() != 0) {
		// Need mScreenshotLayout to handle it after the view disappears
		mScreenshotLayout.post(new Runnable() {
		public void run() {
		takeScreenshot(finisher, statusBarVisible, navBarVisible,
		rect.left, rect.top, rect.width(), rect.height());
		}
		});
		}
		}

		view.stopSelection();
		return true;
		}

		return false;
		}
		});
		mScreenshotLayout.post(new Runnable() {
		@Override
		public void run() {
		mScreenshotSelectorView.setVisibility(View.VISIBLE);
		mScreenshotSelectorView.requestFocus();
		}
		});
		}

		/**
		* Cancels screenshot request
		*/
		void stopScreenshot() {
		// If the selector layer still presents on screen, we remove it and resets its state.
		if (mScreenshotSelectorView.getSelectionRect() != null) {
		mWindowManager.removeView(mScreenshotLayout);
		mScreenshotSelectorView.stopSelection();
		}
		}

		/**
		* Starts the animation after taking the screenshot

packages/SystemUI/src/com/android/systemui/screenshot/ScreenshotSelectorView.java

0 → 100644

+82 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2016 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.systemui.screenshot;

		import android.annotation.Nullable;
		import android.content.Context;
		import android.graphics.Canvas;
		import android.graphics.Color;
		import android.graphics.Paint;
		import android.graphics.Point;
		import android.graphics.PorterDuff;
		import android.graphics.PorterDuffXfermode;
		import android.graphics.Rect;
		import android.util.AttributeSet;
		import android.view.View;

		/**
		* Draws a selection rectangle while taking screenshot
		*/
		public class ScreenshotSelectorView extends View {
		private Point mStartPoint;
		private Rect mSelectionRect;
		private final Paint mPaintSelection, mPaintBackground;

		public ScreenshotSelectorView(Context context) {
		this(context, null);
		}

		public ScreenshotSelectorView(Context context, @Nullable AttributeSet attrs) {
		super(context, attrs);
		mPaintBackground = new Paint(Color.BLACK);
		mPaintBackground.setAlpha(160);
		mPaintSelection = new Paint(Color.TRANSPARENT);
		mPaintSelection.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.CLEAR));
		}

		public void startSelection(int x, int y) {
		mStartPoint = new Point(x, y);
		mSelectionRect = new Rect(x, y, x, y);
		}

		public void updateSelection(int x, int y) {
		if (mSelectionRect != null) {
		mSelectionRect.left = Math.min(mStartPoint.x, x);
		mSelectionRect.right = Math.max(mStartPoint.x, x);
		mSelectionRect.top = Math.min(mStartPoint.y, y);
		mSelectionRect.bottom = Math.max(mStartPoint.y, y);
		invalidate();
		}
		}

		public Rect getSelectionRect() {
		return mSelectionRect;
		}

		public void stopSelection() {
		mStartPoint = null;
		mSelectionRect = null;
		}

		@Override
		public void draw(Canvas canvas) {
		canvas.drawRect(mLeft, mTop, mRight, mBottom, mPaintBackground);
		if (mSelectionRect != null) {
		canvas.drawRect(mSelectionRect, mPaintSelection);
		}
		}
		}

packages/SystemUI/src/com/android/systemui/screenshot/TakeScreenshotService.java

+28 −14

Original line number	Diff line number	Diff line
		@@ -23,6 +23,7 @@ import android.os.IBinder;
		import android.os.Message;
		import android.os.Messenger;
		import android.os.RemoteException;
		import android.view.WindowManager;

		public class TakeScreenshotService extends Service {
		private static final String TAG = "TakeScreenshotService";
		@@ -32,21 +33,28 @@ public class TakeScreenshotService extends Service {
		private Handler mHandler = new Handler() {
		@Override
		public void handleMessage(Message msg) {
		switch (msg.what) {
		case 1:
		final Messenger callback = msg.replyTo;
		if (mScreenshot == null) {
		mScreenshot = new GlobalScreenshot(TakeScreenshotService.this);
		}
		mScreenshot.takeScreenshot(new Runnable() {
		@Override public void run() {
		Runnable finisher = new Runnable() {
		@Override
		public void run() {
		Message reply = Message.obtain(null, 1);
		try {
		callback.send(reply);
		} catch (RemoteException e) {
		}
		}
		}, msg.arg1 > 0, msg.arg2 > 0);
		};
		if (mScreenshot == null) {
		mScreenshot = new GlobalScreenshot(TakeScreenshotService.this);
		}

		switch (msg.what) {
		case WindowManager.TAKE_SCREENSHOT_FULLSCREEN:
		mScreenshot.takeScreenshot(finisher, msg.arg1 > 0, msg.arg2 > 0);
		break;
		case WindowManager.TAKE_SCREENSHOT_SELECTED_REGION:
		mScreenshot.takeScreenshotPartial(finisher, msg.arg1 > 0, msg.arg2 > 0);
		break;
		}
		}
		};
		@@ -55,4 +63,10 @@ public class TakeScreenshotService extends Service {
		public IBinder onBind(Intent intent) {
		return new Messenger(mHandler).getBinder();
		}

		@Override
		public boolean onUnbind(Intent intent) {
		if (mScreenshot != null) mScreenshot.stopScreenshot();
		return true;
		}
		}