private void moveCursor(int step) {
int top = getTopOffset();
int visible = getContentHeight();
// #sijapp cond.if modules_TOUCH is "true"#
if (touchUsed) {
touchUsed = false;
int curr = getCurrItem();
int current = getOffset(curr);
if ((current + getItemHeight(curr) < top) || (top + visible < current)) {
int offset = (step < 0) ? (top + visible - 1) : (top + 1);
setCurrentItemIndex(getItemByOffset(offset));
return;
}
}
// #sijapp cond.end#
int next = getCurrItem() + step;
if (VirtualList.MP_SELECTABLE_ONLY == getMovingPolicy()) {
while (!isItemSelectable(next)) {
next += step;
if ((next < 0) || (getSize() <= next)) {
break;
}
}
}
next = Math.max(-1, Math.min(next, getSize()));
if (0 < step) {
if (getSize() == next) {
int end = getFullSize() - visible;
if (top < end) {
setTopByOffset(Math.min(end, top + visible / 3));
return;
}
} else {
int nextOffset = getOffset(next);
if (top + visible < nextOffset) {
setTopByOffset(top + visible / 3);
return;
}
}
} else {
if (-1 == next) {
if (0 < top) {
setTopByOffset(Math.max(0, top - visible / 3));
return;
}
} else {
if (getOffset(next) + getItemHeight(next) < top) {
setTopByOffset(top - visible / 3);
return;
}
}
}
if ((next < 0) || (getSize() <= next)) {
return;
}
setCurrentItemIndex(next);
}
private void setOptimalTopItem() {
int size = getSize();
if (0 == size) {
setTopByOffset(0);
return;
}
int current = Math.max(0, getCurrItem());
int top = get_Top();
int topOffset = get_TopOffset();
if (current <= top) {
top = current;
final int contentHeight = getContentHeight();
int maxTopHeight = getOffset(size) - contentHeight;
top = Math.min(top, getItemByOffset(maxTopHeight));
setTop(top, Math.max(0, getItemHeight(top) - contentHeight));
} else {
top = Math.min(top, size - 1);
int height;
int offset = getContentHeight();
for (int item = current; top <= item; --item) {
height = getItemHeight(item);
offset -= height;
if (offset <= 0) {
offset = -offset;
if (item == current) {
offset = 0;
}
if (item < top) {
} else if ((item == top) && (offset < topOffset)) {
} else {
setTop(item, offset);
}
return;
}
}
}
}
private int getBottomVisibleItem() {
int size = getSize();
int cur = size;
int offset = getContentHeight() + get_TopOffset();
for (int i = get_Top(); i < size; ++i) {
int height = getItemHeight(i);
if (offset < height) {
cur = i;
break;
}
offset -= height;
}
cur = (size == cur) ? size - 1 : Math.max(get_Top(), cur - 1);
return cur;
}
private void drawBack(GraphicsEx g, int top, int width, int height) {
// Fill background
g.setThemeColor(CanvasEx.THEME_BACKGROUND);
g.fillRect(0, top, width, height);
g.setClip(0, top, width, height);
if (null != Scheme.backImage) {
int offset = 0;
if (0 < getSize()) {
offset =
Math.max(0, Scheme.backImage.getHeight() - height) * getTopOffset() / getFullSize();
}
g.drawImage(Scheme.backImage, 0, top - offset, Graphics.LEFT | Graphics.TOP);
}
}
private void setCurrItem(int cItem) {
currItem = Math.max(0, Math.min(cItem, getSize() - 1));
}
public final void setTopByOffset(int offset) {
offset = Math.max(0, Math.min(offset, getFullSize() - getContentHeight()));
int top = getItemByOffset(offset);
setTop(top, offset - getOffset(top));
}