public void flipCamera(View view) {
stopCamera();
camera.flip();
viewfinder.invalidate();
startCamera();
updateMenu();
}
protected void updateMenu() {
Button flipCameraButton = (Button) findViewById(R.id.flipCameraButton);
if (camera.getCameraCount() > 1) {
flipCameraButton.setVisibility(View.VISIBLE);
if (camera.isFront()) {
flipCameraButton.setCompoundDrawablesWithIntrinsicBounds(
R.drawable.ic_camera_front_white_24dp, 0, 0, 0);
flipCameraButton.setText(getString(R.string.camera_front));
} else {
flipCameraButton.setCompoundDrawablesWithIntrinsicBounds(
R.drawable.ic_camera_rear_white_24dp, 0, 0, 0);
flipCameraButton.setText(getString(R.string.camera_rear));
}
} else {
flipCameraButton.setVisibility(View.GONE);
}
Button thresholdDisplayButton = (Button) findViewById(R.id.thresholdDisplayButton);
if (detector.shouldDrawThreshold()) {
thresholdDisplayButton.setText(getString(R.string.threshold_on));
thresholdDisplayButton.setCompoundDrawablesWithIntrinsicBounds(
R.drawable.ic_filter_b_and_w_white_24dp, 0, 0, 0);
} else {
thresholdDisplayButton.setText(getString(R.string.threshold_off));
thresholdDisplayButton.setCompoundDrawablesWithIntrinsicBounds(
R.drawable.ic_filter_b_and_w_off_white_24dp, 0, 0, 0);
}
Button markerDisplayButton = (Button) findViewById(R.id.markerDisplayButton);
if (detector.getMarkerDrawMode() == MarkerDetector.MarkerDrawMode.off) {
markerDisplayButton.setCompoundDrawablesWithIntrinsicBounds(
R.drawable.ic_border_clear_white_24dp, 0, 0, 0);
markerDisplayButton.setText(getString(R.string.marker_off));
} else if (detector.getMarkerDrawMode() == MarkerDetector.MarkerDrawMode.outline) {
markerDisplayButton.setCompoundDrawablesWithIntrinsicBounds(
R.drawable.ic_border_outer_white_24dp, 0, 0, 0);
markerDisplayButton.setText(getString(R.string.marker_outline));
} else {
markerDisplayButton.setCompoundDrawablesWithIntrinsicBounds(
R.drawable.ic_border_all_white_24dp, 0, 0, 0);
markerDisplayButton.setText(getString(R.string.marker_on));
}
// private ImageView autoOpenIcon;
// private TextView autoOpenLabel;
}
private void startCamera() {
if (camera != null) {
try {
camera.start(holder);
detector.start();
layout();
} catch (Exception e) {
Log.e(TAG, e.getMessage(), e);
}
}
}
private void layout() {
Rect frame = camera.getFrame(viewfinder.getWidth(), viewfinder.getHeight());
if (frame == null) {
return;
}
Log.i(TAG, "Frame = " + frame + ", " + viewfinder.getWidth());
ViewGroup.LayoutParams p = bottomView.getLayoutParams();
SurfaceView surfaceView = (SurfaceView) findViewById(R.id.preview);
p.height = surfaceView.getHeight() - frame.bottom;
p.width = frame.width();
bottomView.setLayoutParams(p);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT && hasNavBar(this)) {
// Don't draw over nav bar
bottomView.setPadding(0, 0, 0, getNavBarHeight());
}
bottomView.requestLayout();
viewfinder.invalidate();
}
private void stopCamera() {
if (camera != null) {
detector.stop();
camera.release();
}
}