private void invalidateRecursive() {
invalidateFlag = true;
if (treeNodes != null) {
for (PageTreeNode child : treeNodes) {
child.invalidateRecursive();
}
}
stopDecodingThisNode();
}
void invalidateNodeBounds() {
targetRect = null;
targetRectF = null;
if (treeNodes != null) {
for (PageTreeNode child : treeNodes) {
child.invalidateNodeBounds();
}
}
}
private void recycle() {
stopDecodingThisNode();
setBitmap(null);
if (treeNodes != null) {
for (PageTreeNode child : treeNodes) {
child.recycle();
}
}
}
private boolean childrenContainBitmaps() {
if (treeNodes == null) {
return false;
}
for (PageTreeNode child : treeNodes) {
if (child.containsBitmaps()) {
return true;
}
}
return false;
}
private void recycleChildren() {
if (treeNodes == null) {
return;
}
for (PageTreeNode child : treeNodes) {
child.recycle();
}
if (!childrenContainBitmaps()) {
treeNodes = null;
}
}
private boolean isHiddenByChildren() {
if (treeNodes == null) {
return false;
}
for (PageTreeNode child : treeNodes) {
if (child.getBitmap() == null) {
return false;
}
}
return true;
}
void draw(Canvas canvas) {
if (getBitmap() != null) {
canvas.drawBitmap(
getBitmap(),
new Rect(0, 0, getBitmap().getWidth(), getBitmap().getHeight()),
getTargetRect(),
bitmapPaint);
}
if (treeNodes == null) {
return;
}
for (PageTreeNode child : treeNodes) {
child.draw(canvas);
}
}
public void updateVisibility() {
invalidateChildren();
if (treeNodes != null) {
for (PageTreeNode child : treeNodes) {
child.updateVisibility();
}
}
if (isVisible()) {
if (!thresholdHit()) {
if (getBitmap() != null && !invalidateFlag) {
restoreBitmapReference();
} else {
decodePageTreeNode();
}
}
}
if (!isVisibleAndNotHiddenByChildren()) {
stopDecodingThisNode();
setBitmap(null);
}
}