Example usage for android.widget ScrollView getDrawingRect

Introduction

In this page you can find the example usage for android.widget ScrollView getDrawingRect.

Prototype

public void getDrawingRect(Rect outRect) 

Source Link

Document

Return the visible drawing bounds of your view.

Usage

From source file:com.bq.robotic.robopad_plusplus.fragments.ScheduleRobotMovementsFragment.java

/**
 * Set the listeners to the views that need them. It must be done here in the fragment in order
 * to get the callback here and not in the FragmentActivity, that would be a mess with all the 
 * callbacks of all the possible fragments
 *//* w  w  w .  j ava  2 s. com*/
private void setUiListeners() {

    gridView.setOnRearrangeListener(new OnRearrangeListener() {
        public void onRearrange(int oldIndex, int newIndex) {
            if (scheduledControls.isEmpty()) {
                return;
            }

            String scheduledControl = scheduledControls.remove(oldIndex);
            if (oldIndex < newIndex)
                scheduledControls.add(newIndex, scheduledControl);
            else
                scheduledControls.add(newIndex, scheduledControl);
        }

        public void onRearrange(boolean isDraggedDeleted, int draggedDeletedIndex) {
            if (scheduledControls.isEmpty()) {
                return;
            }

            if (isDraggedDeleted) {
                scheduledControls.remove(draggedDeletedIndex);
            }
        }
    });

    GridLayout movementsViews = (GridLayout) getActivity().findViewById(R.id.type_of_movements_container);
    for (int i = 0; i < movementsViews.getChildCount(); i++) {
        movementsViews.getChildAt(i).setOnClickListener(onMovementsButtonClick);
    }

    LinearLayout optionsLayout = (LinearLayout) getActivity().findViewById(R.id.menu_options_container);
    for (int i = 0; i < optionsLayout.getChildCount(); i++) {
        optionsLayout.getChildAt(i).setOnClickListener(onOptionsButtonClick);
    }

    // Resize the GridLayout depending on the number of icons (depending on the current robot
    // selected). In order not to get too much number of columns in little screen, it is limited
    // to two and scroll the  screen if there are more icons. If scroll is not needed the icons
    // are centered in the layout
    final GridLayout typeOfMovementsContainer = (GridLayout) getActivity()
            .findViewById(R.id.type_of_movements_container);
    final ViewTreeObserver vto = typeOfMovementsContainer.getViewTreeObserver();
    final ViewTreeObserver.OnPreDrawListener preDrawListener = new ViewTreeObserver.OnPreDrawListener() {
        public boolean onPreDraw() {
            Rect scrollBounds = new Rect();
            ScrollView scroll = (ScrollView) getActivity().findViewById(R.id.scroll_container);
            scroll.getDrawingRect(scrollBounds);
            //                int finalHeight = scrollBounds.bottom - getActivity().getResources().getDimensionPixelSize(R.dimen.scheduler_grid_margin);
            int finalHeight = scrollBounds.bottom;
            int childCount = typeOfMovementsContainer.getChildCount();

            if (childCount > 1) {
                for (int i = 0; i < childCount; i++) {

                    if (typeOfMovementsContainer.getChildAt(i).getBottom() > finalHeight) {
                        typeOfMovementsContainer.setColumnCount(2);
                        break;
                    }
                }
            }

            scroll.invalidate();

            final ViewTreeObserver vto = typeOfMovementsContainer.getViewTreeObserver();
            vto.removeOnPreDrawListener(this);

            return true;
        }
    };

    vto.addOnPreDrawListener(preDrawListener);

}

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