/**
* Copy dirty layer references to array for further painting. The copying is needed to not keep
* lock on layers list when layers painting will happen. Dirty states of the layers are cleaned
* after the copying. Layers painting can change layers state again, but it will be served on next
* repaint only.
*/
private void copyAndCleanDirtyLayers() {
if (CGraphicsQ.DEBUG) {
System.err.println("[Copy dirty layers]");
}
CLayer l;
dirtyCount = 0;
int layersCount = layers.size();
// Heuristics to increase array for copied dirty layers
if (layersCount > dirtyMaxCount) {
dirtyMaxCount += layersCount;
dirtyLayers = new CLayer[dirtyMaxCount];
}
// Copy dirty layer references and reset dirty layer states
for (CLayerElement le = layers.getBottom(); le != null; le = le.getUpper()) {
l = le.getLayer();
if (l.visible && l.isDirty()) {
l.copyAndCleanDirtyState();
dirtyLayers[dirtyCount++] = l;
} else { // !(visible && dirty)
if (CGraphicsQ.DEBUG) {
System.err.println("Skip Layer: " + l);
}
} // if
} // for
}
