@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (mViewImage.mPaused) return false;
// Don't respond to arrow keys if trackball scrolling is not enabled
if (!mEnableTrackballScroll) {
if ((keyCode >= KeyEvent.KEYCODE_DPAD_UP)
&& (keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT)) {
return super.onKeyDown(keyCode, event);
}
}
int current = mViewImage.mCurrentPosition;
int nextImagePos = -2; // default no next image
try {
switch (keyCode) {
case KeyEvent.KEYCODE_DPAD_CENTER: {
if (mViewImage.isPickIntent()) {
IImage img = mViewImage.mAllImages
.getImageAt(mViewImage.mCurrentPosition);
mViewImage.setResult(ReviewImage.RESULT_OK,
new Intent().setData(img.fullSizeImageUri()));
mViewImage.finish();
}
break;
}
case KeyEvent.KEYCODE_DPAD_LEFT: {
if (getScale() <= 1F && event.getEventTime()
>= mNextChangePositionTime) {
nextImagePos = current - 1;
mNextChangePositionTime = event.getEventTime() + 500;
} else {
panBy(PAN_RATE, 0);
center(true, false);
}
return true;
}
case KeyEvent.KEYCODE_DPAD_RIGHT: {
if (getScale() <= 1F && event.getEventTime()
>= mNextChangePositionTime) {
nextImagePos = current + 1;
mNextChangePositionTime = event.getEventTime() + 500;
} else {
panBy(-PAN_RATE, 0);
center(true, false);
}
return true;
}
case KeyEvent.KEYCODE_DPAD_UP: {
panBy(0, PAN_RATE);
center(false, true);
return true;
}
case KeyEvent.KEYCODE_DPAD_DOWN: {
panBy(0, -PAN_RATE);
center(false, true);
return true;
}
case KeyEvent.KEYCODE_DEL:
MenuHelper.deletePhoto(
mViewImage, mViewImage.mDeletePhotoRunnable);
break;
}
} finally {
if (nextImagePos >= 0
&& nextImagePos < mViewImage.mAllImages.getCount()) {
synchronized (mViewImage) {
mViewImage.setImage(nextImagePos, true);
}
} else if (nextImagePos != -2) {
center(true, true);
}
}
return super.onKeyDown(keyCode, event);
}
