| /* |
| * Copyright (C) 2011 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.animation.Animator; |
| import android.animation.AnimatorListenerAdapter; |
| import android.animation.AnimatorSet; |
| import android.animation.ObjectAnimator; |
| import android.animation.TimeInterpolator; |
| import android.animation.ValueAnimator; |
| import android.animation.ValueAnimator.AnimatorUpdateListener; |
| import android.app.Activity; |
| import android.content.ContentValues; |
| import android.content.Context; |
| import android.graphics.Bitmap; |
| import android.graphics.Canvas; |
| import android.graphics.Matrix; |
| import android.graphics.PixelFormat; |
| import android.media.MediaScannerConnection; |
| import android.net.Uri; |
| import android.os.AsyncTask; |
| import android.os.Binder; |
| import android.os.Environment; |
| import android.os.ServiceManager; |
| import android.provider.MediaStore; |
| import android.util.DisplayMetrics; |
| import android.util.Log; |
| import android.view.Display; |
| import android.view.IWindowManager; |
| import android.view.LayoutInflater; |
| import android.view.MotionEvent; |
| import android.view.Surface; |
| import android.view.View; |
| import android.view.ViewGroup; |
| import android.view.WindowManager; |
| import android.widget.FrameLayout; |
| import android.widget.ImageView; |
| import android.widget.TextView; |
| import android.widget.Toast; |
| |
| import com.android.systemui.R; |
| |
| import java.io.File; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.io.OutputStream; |
| import java.lang.Thread; |
| import java.text.SimpleDateFormat; |
| import java.util.Date; |
| |
| /** |
| * POD used in the AsyncTask which saves an image in the background. |
| */ |
| class SaveImageInBackgroundData { |
| Context context; |
| Bitmap image; |
| int result; |
| } |
| |
| /** |
| * An AsyncTask that saves an image to the media store in the background. |
| */ |
| class SaveImageInBackgroundTask extends AsyncTask<SaveImageInBackgroundData, Void, |
| SaveImageInBackgroundData> { |
| private static final String TAG = "SaveImageInBackgroundTask"; |
| private static final String SCREENSHOTS_DIR_NAME = "Screenshots"; |
| private static final String SCREENSHOT_FILE_PATH_TEMPLATE = "%s/%s/Screenshot_%s-%d.png"; |
| |
| @Override |
| protected SaveImageInBackgroundData doInBackground(SaveImageInBackgroundData... params) { |
| if (params.length != 1) return null; |
| |
| Context context = params[0].context; |
| Bitmap image = params[0].image; |
| |
| try{ |
| long currentTime = System.currentTimeMillis(); |
| String date = new SimpleDateFormat("MM-dd-yy-kk-mm-ss").format(new Date(currentTime)); |
| String imageDir = Environment.getExternalStoragePublicDirectory( |
| Environment.DIRECTORY_PICTURES).getAbsolutePath(); |
| String imageFilePath = String.format(SCREENSHOT_FILE_PATH_TEMPLATE, |
| imageDir, SCREENSHOTS_DIR_NAME, |
| date, currentTime % 1000); |
| |
| // Save the screenshot to the MediaStore |
| ContentValues values = new ContentValues(); |
| values.put(MediaStore.Images.ImageColumns.DATA, imageFilePath); |
| values.put(MediaStore.Images.ImageColumns.TITLE, "Screenshot"); |
| values.put(MediaStore.Images.ImageColumns.DISPLAY_NAME, "Screenshot"); |
| values.put(MediaStore.Images.ImageColumns.DATE_TAKEN, currentTime); |
| values.put(MediaStore.Images.ImageColumns.DATE_ADDED, currentTime); |
| values.put(MediaStore.Images.ImageColumns.DATE_MODIFIED, currentTime); |
| values.put(MediaStore.Images.ImageColumns.MIME_TYPE, "image/png"); |
| Uri uri = context.getContentResolver().insert( |
| MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values); |
| |
| OutputStream out = context.getContentResolver().openOutputStream(uri); |
| image.compress(Bitmap.CompressFormat.PNG, 100, out); |
| out.flush(); |
| out.close(); |
| |
| params[0].result = 0; |
| }catch(IOException e){ |
| params[0].result = 1; |
| } |
| |
| return params[0]; |
| }; |
| |
| @Override |
| protected void onPostExecute(SaveImageInBackgroundData params) { |
| if (params.result > 0) { |
| // Show a message that we've failed to save the image to disk |
| Toast.makeText(params.context, R.string.screenshot_failed_toast, |
| Toast.LENGTH_SHORT).show(); |
| } else { |
| // Show a message that we've saved the screenshot to disk |
| Toast.makeText(params.context, R.string.screenshot_saving_toast, |
| Toast.LENGTH_SHORT).show(); |
| } |
| }; |
| } |
| |
| /** |
| * TODO: |
| * - Performance when over gl surfaces? Ie. Gallery |
| * - what do we say in the Toast? Which icon do we get if the user uses another |
| * type of gallery? |
| */ |
| class GlobalScreenshot { |
| private static final String TAG = "GlobalScreenshot"; |
| private static final int SCREENSHOT_FADE_IN_DURATION = 900; |
| private static final int SCREENSHOT_FADE_OUT_DELAY = 1000; |
| private static final int SCREENSHOT_FADE_OUT_DURATION = 450; |
| private static final int TOAST_FADE_IN_DURATION = 500; |
| private static final int TOAST_FADE_OUT_DELAY = 1000; |
| private static final int TOAST_FADE_OUT_DURATION = 500; |
| private static final float BACKGROUND_ALPHA = 0.65f; |
| private static final float SCREENSHOT_SCALE = 0.85f; |
| private static final float SCREENSHOT_MIN_SCALE = 0.7f; |
| private static final float SCREENSHOT_ROTATION = -6.75f; // -12.5f; |
| |
| private Context mContext; |
| private LayoutInflater mLayoutInflater; |
| private IWindowManager mIWindowManager; |
| private WindowManager mWindowManager; |
| private WindowManager.LayoutParams mWindowLayoutParams; |
| private Display mDisplay; |
| private DisplayMetrics mDisplayMetrics; |
| private Matrix mDisplayMatrix; |
| |
| private Bitmap mScreenBitmap; |
| private View mScreenshotLayout; |
| private ImageView mBackgroundView; |
| private FrameLayout mScreenshotContainerView; |
| private ImageView mScreenshotView; |
| |
| private AnimatorSet mScreenshotAnimation; |
| |
| // General use cubic interpolator |
| final TimeInterpolator mCubicInterpolator = new TimeInterpolator() { |
| public float getInterpolation(float t) { |
| return t*t*t; |
| } |
| }; |
| // The interpolator used to control the background alpha at the start of the animation |
| final TimeInterpolator mBackgroundViewAlphaInterpolator = new TimeInterpolator() { |
| public float getInterpolation(float t) { |
| float tStep = 0.35f; |
| if (t < tStep) { |
| return t * (1f / tStep); |
| } else { |
| return 1f; |
| } |
| } |
| }; |
| |
| /** |
| * @param context everything needs a context :( |
| */ |
| public GlobalScreenshot(Context context) { |
| mContext = context; |
| mLayoutInflater = (LayoutInflater) |
| context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); |
| |
| // Inflate the screenshot layout |
| mDisplayMetrics = new DisplayMetrics(); |
| mDisplayMatrix = new Matrix(); |
| mScreenshotLayout = mLayoutInflater.inflate(R.layout.global_screenshot, null); |
| mBackgroundView = (ImageView) mScreenshotLayout.findViewById(R.id.global_screenshot_background); |
| mScreenshotContainerView = (FrameLayout) mScreenshotLayout.findViewById(R.id.global_screenshot_container); |
| mScreenshotView = (ImageView) mScreenshotLayout.findViewById(R.id.global_screenshot); |
| mScreenshotLayout.setFocusable(true); |
| mScreenshotLayout.setOnTouchListener(new View.OnTouchListener() { |
| @Override |
| public boolean onTouch(View v, MotionEvent event) { |
| // Intercept and ignore all touch events |
| return true; |
| } |
| }); |
| |
| // Setup the window that we are going to use |
| mIWindowManager = IWindowManager.Stub.asInterface( |
| ServiceManager.getService(Context.WINDOW_SERVICE)); |
| mWindowLayoutParams = new WindowManager.LayoutParams( |
| ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT, 0, 0, |
| WindowManager.LayoutParams.TYPE_SECURE_SYSTEM_OVERLAY, |
| WindowManager.LayoutParams.FLAG_FULLSCREEN |
| | WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED |
| | WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED_SYSTEM |
| | WindowManager.LayoutParams.FLAG_KEEP_SURFACE_WHILE_ANIMATING |
| | WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN |
| | WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED, |
| PixelFormat.TRANSLUCENT); |
| mWindowLayoutParams.token = new Binder(); |
| mWindowLayoutParams.setTitle("ScreenshotAnimation"); |
| mWindowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE); |
| mDisplay = mWindowManager.getDefaultDisplay(); |
| } |
| |
| /** |
| * Creates a new worker thread and saves the screenshot to the media store. |
| */ |
| private void saveScreenshotInWorkerThread() { |
| SaveImageInBackgroundData data = new SaveImageInBackgroundData(); |
| data.context = mContext; |
| data.image = mScreenBitmap; |
| new SaveImageInBackgroundTask().execute(data); |
| } |
| |
| /** |
| * @return the current display rotation in degrees |
| */ |
| private float getDegreesForRotation(int value) { |
| switch (value) { |
| case Surface.ROTATION_90: |
| return 90f; |
| case Surface.ROTATION_180: |
| return 180f; |
| case Surface.ROTATION_270: |
| return 270f; |
| } |
| return 0f; |
| } |
| |
| /** |
| * Takes a screenshot of the current display and shows an animation. |
| */ |
| void takeScreenshot() { |
| // 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); |
| float[] dims = {mDisplayMetrics.widthPixels, mDisplayMetrics.heightPixels}; |
| float degrees = getDegreesForRotation(mDisplay.getRotation()); |
| boolean requiresRotation = (degrees > 0); |
| if (requiresRotation) { |
| // Get the dimensions of the device in its native orientation |
| mDisplayMatrix.reset(); |
| mDisplayMatrix.preRotate(-degrees); |
| mDisplayMatrix.mapPoints(dims); |
| dims[0] = Math.abs(dims[0]); |
| dims[1] = Math.abs(dims[1]); |
| } |
| mScreenBitmap = Surface.screenshot((int) dims[0], (int) dims[1]); |
| if (requiresRotation) { |
| // Rotate the screenshot to the current orientation |
| Bitmap ss = Bitmap.createBitmap(mDisplayMetrics.widthPixels, |
| mDisplayMetrics.heightPixels, Bitmap.Config.ARGB_8888); |
| Canvas c = new Canvas(ss); |
| c.translate(ss.getWidth() / 2, ss.getHeight() / 2); |
| c.rotate(360f - degrees); |
| c.translate(-dims[0] / 2, -dims[1] / 2); |
| c.drawBitmap(mScreenBitmap, 0, 0, null); |
| mScreenBitmap = ss; |
| } |
| |
| // If we couldn't take the screenshot, notify the user |
| if (mScreenBitmap == null) { |
| Toast.makeText(mContext, R.string.screenshot_failed_toast, |
| Toast.LENGTH_SHORT).show(); |
| return; |
| } |
| |
| // Start the post-screenshot animation |
| startAnimation(); |
| } |
| |
| |
| /** |
| * Starts the animation after taking the screenshot |
| */ |
| private void startAnimation() { |
| // Add the view for the animation |
| mScreenshotView.setImageBitmap(mScreenBitmap); |
| mScreenshotLayout.requestFocus(); |
| |
| // Setup the animation with the screenshot just taken |
| if (mScreenshotAnimation != null) { |
| mScreenshotAnimation.end(); |
| } |
| |
| mWindowManager.addView(mScreenshotLayout, mWindowLayoutParams); |
| ValueAnimator screenshotFadeInAnim = createScreenshotFadeInAnimation(); |
| ValueAnimator screenshotFadeOutAnim = createScreenshotFadeOutAnimation(); |
| mScreenshotAnimation = new AnimatorSet(); |
| mScreenshotAnimation.play(screenshotFadeInAnim).before(screenshotFadeOutAnim); |
| mScreenshotAnimation.addListener(new AnimatorListenerAdapter() { |
| @Override |
| public void onAnimationEnd(Animator animation) { |
| // Save the screenshot once we have a bit of time now |
| saveScreenshotInWorkerThread(); |
| |
| mWindowManager.removeView(mScreenshotLayout); |
| } |
| }); |
| mScreenshotAnimation.start(); |
| } |
| private ValueAnimator createScreenshotFadeInAnimation() { |
| ValueAnimator anim = ValueAnimator.ofFloat(0f, 1f); |
| anim.setInterpolator(mCubicInterpolator); |
| anim.setDuration(SCREENSHOT_FADE_IN_DURATION); |
| anim.addListener(new AnimatorListenerAdapter() { |
| @Override |
| public void onAnimationStart(Animator animation) { |
| mBackgroundView.setVisibility(View.VISIBLE); |
| mScreenshotContainerView.setVisibility(View.VISIBLE); |
| } |
| }); |
| anim.addUpdateListener(new AnimatorUpdateListener() { |
| @Override |
| public void onAnimationUpdate(ValueAnimator animation) { |
| float t = ((Float) animation.getAnimatedValue()).floatValue(); |
| mBackgroundView.setAlpha(mBackgroundViewAlphaInterpolator.getInterpolation(t) * |
| BACKGROUND_ALPHA); |
| float scaleT = SCREENSHOT_SCALE + (1f - t) * SCREENSHOT_SCALE; |
| mScreenshotContainerView.setAlpha(t*t*t*t); |
| mScreenshotContainerView.setScaleX(scaleT); |
| mScreenshotContainerView.setScaleY(scaleT); |
| mScreenshotContainerView.setRotation(t * SCREENSHOT_ROTATION); |
| } |
| }); |
| return anim; |
| } |
| private ValueAnimator createScreenshotFadeOutAnimation() { |
| ValueAnimator anim = ValueAnimator.ofFloat(1f, 0f); |
| anim.setInterpolator(mCubicInterpolator); |
| anim.setStartDelay(SCREENSHOT_FADE_OUT_DELAY); |
| anim.setDuration(SCREENSHOT_FADE_OUT_DURATION); |
| anim.addListener(new AnimatorListenerAdapter() { |
| @Override |
| public void onAnimationEnd(Animator animation) { |
| mBackgroundView.setVisibility(View.GONE); |
| mScreenshotContainerView.setVisibility(View.GONE); |
| } |
| }); |
| anim.addUpdateListener(new AnimatorUpdateListener() { |
| @Override |
| public void onAnimationUpdate(ValueAnimator animation) { |
| float t = ((Float) animation.getAnimatedValue()).floatValue(); |
| float scaleT = SCREENSHOT_MIN_SCALE + |
| t*(SCREENSHOT_SCALE - SCREENSHOT_MIN_SCALE); |
| mScreenshotContainerView.setAlpha(t); |
| mScreenshotContainerView.setScaleX(scaleT); |
| mScreenshotContainerView.setScaleY(scaleT); |
| mBackgroundView.setAlpha(t * t * BACKGROUND_ALPHA); |
| } |
| }); |
| return anim; |
| } |
| } |