Method scheduleScrolling

src/org/albite/albite/BookCanvas.java:1332–1383

(final int scrollMode)

    }

    private void scheduleScrolling(final int scrollMode) {
        /*
         * Invalidate holding time. It's important for the situtations when 
         * the canvas can't respond to pointerReleased eventes (e.g. when
         * loading pictures) and it may interpret the time wrongly.
         */
        holdingValid = false;

        if (scrollingTimerTask == null) {
            scrollingTimerTask = new TimerTask() {
                private int dx;
                private boolean fullPage;

                public void run() {
                    switch(scrollMode) {
                        case SCROLL_PREV:
                            dx = scrollNextPagePixels;
                            fullPage = true;
                            break;
                        case SCROLL_NEXT:
                            dx = -scrollNextPagePixels;
                            fullPage = true;
                            break;
                        case SCROLL_SAME_NEXT:
                            dx = scrollSamePagePixels;
                            fullPage = false;
                            break;
                        case SCROLL_SAME_PREV:
                            dx = -scrollSamePagePixels;
                            fullPage = false;
                            break;
                        case SCROLL_BOOK_END:
                            dx = scrollStartBookPixels;
                            fullPage = false;
                            break;
                        case SCROLL_BOOK_START:
                            dx = -scrollStartBookPixels;
                            fullPage = false;
                            break;
                        default:
                            dx = 0;
                            fullPage = false;
                            break;
                    }

                    scrollPages(dx, fullPage);
                }
            };

            timer.schedule(scrollingTimerTask, frameTime, frameTime);
        }
    }

    private synchronized void stopScrolling() {
        if (scrollingTimerTask != null) {