/** Takes a screenshot of the current display and shows an animation. */
void takeScreenshot(Runnable finisher, boolean statusBarVisible, boolean navBarVisible) {
// 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());
int value = mDisplay.getRotation();
String hwRotation = SystemProperties.get("ro.sf.hwrotation", "0");
if (hwRotation.equals("270") || hwRotation.equals("90")) {
value = (value + 3) % 4;
}
float degrees = getDegreesForRotation(value);
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]);
}
// Take the screenshot
mScreenBitmap = Surface.screenshot((int) dims[0], (int) dims[1]);
if (mScreenBitmap == null) {
notifyScreenshotError(mContext, mNotificationManager);
finisher.run();
return;
}
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(degrees);
c.translate(-dims[0] / 2, -dims[1] / 2);
c.drawBitmap(mScreenBitmap, 0, 0, null);
c.setBitmap(null);
mScreenBitmap = ss;
}
// Optimizations
mScreenBitmap.setHasAlpha(false);
mScreenBitmap.prepareToDraw();
// Start the post-screenshot animation
startAnimation(
finisher,
mDisplayMetrics.widthPixels,
mDisplayMetrics.heightPixels,
statusBarVisible,
navBarVisible);
}
/** Returns a screenshot of the current display contents. */
Bitmap createScreenshot() {
// 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);
boolean hasNavBar =
mContext.getResources().getBoolean(com.android.internal.R.bool.config_showNavigationBar);
float[] dims = {mDisplayMetrics.widthPixels, mDisplayMetrics.heightPixels};
float degrees = getDegreesForRotation(mDisplay.getRotation());
final int statusBarHeight =
mContext
.getResources()
.getDimensionPixelSize(com.android.internal.R.dimen.status_bar_height);
// Navbar has different sizes, depending on orientation
final int navBarHeight =
hasNavBar
? mContext
.getResources()
.getDimensionPixelSize(com.android.internal.R.dimen.navigation_bar_height)
: 0;
final int navBarWidth =
hasNavBar
? mContext
.getResources()
.getDimensionPixelSize(com.android.internal.R.dimen.navigation_bar_width)
: 0;
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]);
}
Bitmap bitmap = Surface.screenshot((int) dims[0], (int) dims[1]);
// Bail if we couldn't take the screenshot
if (bitmap == null) {
return null;
}
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(bitmap, 0, 0, null);
bitmap = ss;
}
// TODO this is somewhat device-specific; need generic solution.
// Crop off the status bar and the nav bar
// Portrait: 0, statusBarHeight, width, height - status - nav
// Landscape: 0, statusBarHeight, width - navBar, height - status
int newLeft = 0;
int newTop = statusBarHeight;
int newWidth = bitmap.getWidth();
int newHeight = bitmap.getHeight();
if (bitmap.getWidth() < bitmap.getHeight()) {
// Portrait mode: status bar is at the top, navbar bottom, width unchanged
newHeight = bitmap.getHeight() - statusBarHeight - navBarHeight;
} else {
// Landscape mode: status bar is at the top, navbar right
newHeight = bitmap.getHeight() - statusBarHeight;
newWidth = bitmap.getWidth() - navBarWidth;
}
bitmap = Bitmap.createBitmap(bitmap, newLeft, newTop, newWidth, newHeight);
return bitmap;
}
