comparison layer/SpectrogramLayer.cpp @ 29:9f55af9676b4

* Add ffwd/rewind
* Abstract out MultiSelection

     m_pixmapCache(0),
     m_pixmapCacheInvalid(true),
     m_fillThread(0),
     m_updateTimer(0),
     m_lastFillExtent(0),
+    m_dormant(false),
     m_exiting(false)
 {
     if (config == MelodicRange) {
 	setWindowSize(8192);
 	setWindowOverlap(90);

 
 SpectrogramLayer::FrequencyScale
 SpectrogramLayer::getFrequencyScale() const
 {
     return m_frequencyScale;
+}
+
+void
+SpectrogramLayer::setLayerDormant()
+{
+    m_mutex.lock();
+    m_dormant = true;
+    delete m_cache;
+    m_cache = 0;
+    m_pixmapCacheInvalid = true;
+    delete m_pixmapCache;
+    m_pixmapCache = 0;
+    m_mutex.unlock();
 }
 
 void
 SpectrogramLayer::cacheInvalid()
 {

 
 	bool interrupted = false;
 
 //	std::cerr << "SpectrogramLayer::CacheFillThread::run in loop" << std::endl;
 
-	if (m_layer.m_model && m_layer.m_cacheInvalid) {
+	if (m_layer.m_model && m_layer.m_cacheInvalid && !m_layer.m_dormant) {
 
 //	    std::cerr << "SpectrogramLayer::CacheFillThread::run: something to do" << std::endl;
 
 	    while (!m_layer.m_model->isReady()) {
 		m_layer.m_condition.wait(&m_layer.m_mutex, 100);

 #ifdef DEBUG_SPECTROGRAM_REPAINT
     std::cerr << "SpectrogramLayer::paint(): m_model is " << m_model << ", zoom level is " << m_view->getZoomLevel() << ", m_updateTimer " << m_updateTimer << ", pixmap cache invalid " << m_pixmapCacheInvalid << std::endl;
 #endif
 
     if (!m_model || !m_model->isOK() || !m_model->isReady()) {
+	return;
+    }
+
+    if (m_dormant) {
+	std::cerr << "SpectrogramLayer::paint(): Layer is dormant, de-hibernating" << std::endl;
+	m_dormant = false;
+	((SpectrogramLayer *)this)->fillCache();
 	return;
     }
 
 #ifdef DEBUG_SPECTROGRAM_REPAINT
     std::cerr << "SpectrogramLayer::paint(): About to lock" << std::endl;