133 lines
3.9 KiB
C++
133 lines
3.9 KiB
C++
#include "fl/engine_events.h"
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#include "fl/namespace.h"
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using namespace fl;
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FASTLED_NAMESPACE_BEGIN
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EngineEvents::Listener::Listener() {
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}
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EngineEvents::Listener::~Listener() {
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#if FASTLED_HAS_ENGINE_EVENTS
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EngineEvents* ptr = EngineEvents::getInstance();
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const bool has_listener = ptr && ptr->_hasListener(this);
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if (has_listener) {
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// Warning, the listener should be removed by the subclass. If we are here
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// then the subclass did not remove the listener and we are now in a partial
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// state of destruction and the results may be undefined for multithreaded
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// applications. However, for single threaded (the only option as of 2024, October)
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// this will be ok.
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ptr->_removeListener(this);
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}
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#endif
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}
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EngineEvents* EngineEvents::getInstance() {
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#if FASTLED_HAS_ENGINE_EVENTS
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return &Singleton<EngineEvents>::instance();
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#else
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return nullptr; // strip out when engine events are disabled.
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#endif
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}
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#if FASTLED_HAS_ENGINE_EVENTS
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void EngineEvents::_onPlatformPreLoop() {
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for (auto& item : mListeners) {
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auto listener = item.listener;
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listener->onPlatformPreLoop();
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}
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for (auto& item : mListeners) {
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auto listener = item.listener;
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listener->onPlatformPreLoop2();
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}
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}
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bool EngineEvents::_hasListener(Listener* listener) {
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auto predicate = [listener](const Pair& pair) {
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return pair.listener == listener;
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};
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return mListeners.find_if(predicate) != mListeners.end();
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}
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void EngineEvents::_addListener(Listener* listener, int priority) {
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if (_hasListener(listener)) {
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return;
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}
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for (auto it = mListeners.begin(); it != mListeners.end(); ++it) {
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if (it->priority < priority) {
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// this is now the highest priority in this spot.
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EngineEvents::Pair pair = EngineEvents::Pair(listener, priority);
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mListeners.insert(it, pair);
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return;
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}
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}
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EngineEvents::Pair pair = EngineEvents::Pair(listener, priority);
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mListeners.push_back(pair);
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}
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void EngineEvents::_removeListener(Listener* listener) {
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auto predicate = [listener](const Pair& pair) {
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return pair.listener == listener;
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};
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auto it = mListeners.find_if(predicate);
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if (it != mListeners.end()) {
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mListeners.erase(it);
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}
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}
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void EngineEvents::_onBeginFrame() {
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// Make the copy of the listener list to avoid issues with listeners being added or removed during the loop.
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ListenerList copy = mListeners;
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for (auto& item : copy) {
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auto listener = item.listener;
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listener->onBeginFrame();
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}
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}
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void EngineEvents::_onEndShowLeds() {
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// Make the copy of the listener list to avoid issues with listeners being added or removed during the loop.
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ListenerList copy = mListeners;
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for (auto& item : copy) {
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auto listener = item.listener;
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listener->onEndShowLeds();
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}
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}
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void EngineEvents::_onEndFrame() {
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// Make the copy of the listener list to avoid issues with listeners being added or removed during the loop.
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ListenerList copy = mListeners;
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for (auto& item : copy) {
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auto listener = item.listener;
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listener->onEndFrame();
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}
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}
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void EngineEvents::_onStripAdded(CLEDController* strip, uint32_t num_leds) {
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// Make the copy of the listener list to avoid issues with listeners being added or removed during the loop.
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ListenerList copy = mListeners;
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for (auto& item : copy) {
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auto listener = item.listener;
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listener->onStripAdded(strip, num_leds);
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}
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}
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void EngineEvents::_onCanvasUiSet(CLEDController *strip, const ScreenMap& screenmap) {
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// Make the copy of the listener list to avoid issues with listeners being added or removed during the loop.
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ListenerList copy = mListeners;
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for (auto& item : copy) {
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auto listener = item.listener;
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listener->onCanvasUiSet(strip, screenmap);
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}
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}
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#endif // FASTLED_HAS_ENGINE_EVENTS
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FASTLED_NAMESPACE_END
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