Let nyanalyzer cat nap inbetween songs

src/analyzers/analyzerbase.cpp

@@ -49,6 +49,7 @@ Analyzer::Base::Base( QWidget *parent, uint scopeSize )
         , m_engine(NULL)
         , m_lastScope(512)
         , new_frame_(false)
+        , is_playing_(false)
 {
 }
 
@@ -81,16 +82,14 @@ void Analyzer::Base::transform( Scope &scope ) //virtual
 
 void Analyzer::Base::paintEvent(QPaintEvent * e)
 {
-    EngineBase *engine = m_engine;
-
     QPainter p(this);
     p.fillRect(e->rect(), palette().color(QPalette::Window));
 
-    switch( engine->state() )
+    switch( m_engine->state() )
     {
     case Engine::Playing:
     {
-        const Engine::Scope &thescope = engine->scope();
+        const Engine::Scope &thescope = m_engine->scope();
         int i = 0;
 
         // convert to mono here - our built in analyzers need mono, but we the engines provide interleaved pcm
@@ -100,6 +99,7 @@ void Analyzer::Base::paintEvent(QPaintEvent * e)
            i += 2;
         }
 
+        is_playing_ = true;
         transform( m_lastScope );
         analyze( p, m_lastScope, new_frame_ );
 
@@ -108,13 +108,16 @@ void Analyzer::Base::paintEvent(QPaintEvent * e)
         break;
     }
     case Engine::Paused:
+        is_playing_ = false;
         analyze(p, m_lastScope, new_frame_);
         break;
 
     default:
+        is_playing_ = false;
         demo(p);
     }
 
+
     new_frame_ = false;
 }
 
@@ -152,9 +155,6 @@ int Analyzer::Base::resizeForBands( int bands )
     return m_fht->size() / 2;
 }
 
-void Analyzer::Base::paused(QPainter&) //virtual
-{}
-
 void Analyzer::Base::demo(QPainter& p) //virtual
 {
     static int t = 201; //FIXME make static to namespace perhaps

src/analyzers/analyzerbase.h

@@ -68,7 +68,6 @@ protected:
     virtual void init() {}
     virtual void transform( Scope& );
     virtual void analyze( QPainter& p, const Scope&, bool new_frame) = 0;
-    virtual void paused(QPainter& p);
     virtual void demo(QPainter& p);
 
 protected:
@@ -79,6 +78,7 @@ protected:
     Scope m_lastScope;
 
     bool new_frame_;
+    bool is_playing_;
 };
 
 

src/analyzers/nyancatanalyzer.cpp

@@ -78,7 +78,8 @@ void NyanCatAnalyzer::analyze(QPainter& p, const Analyzer::Scope& s, bool new_fr
   // Discard the second half of the transform
   const int scope_size = s.size() / 2;
 
-  if (new_frame) {
+  if ((new_frame && is_playing_) ||
+      (buffer_[0].isNull() && buffer_[1].isNull())) {
     // Transform the music into rainbows!
     for (int band=0 ; band<kRainbowBands ; ++band) {
       float* band_start = history_ + band * kHistorySize;
@@ -161,7 +162,10 @@ void NyanCatAnalyzer::analyze(QPainter& p, const Analyzer::Scope& s, bool new_fr
 
   // Draw nyan cat (he's been waiting for this for 75 lines).
   // Nyan nyan nyan nyan.
-  QRect cat_dest(width() - kCatWidth, (height() - kCatHeight) / 2,
-                 kCatWidth, kCatHeight);
-  p.drawPixmap(cat_dest, cat_, CatSourceRect());
+  if (!is_playing_) {
+    // Ssshhh!
+    p.drawPixmap(SleepingCatDestRect(), cat_, SleepingCatSourceRect());
+  } else {
+    p.drawPixmap(CatDestRect(), cat_, CatSourceRect());
+  }
 }

src/analyzers/nyancatanalyzer.h

@@ -40,8 +40,9 @@ protected:
 private:
   static const int kCatHeight = 21;
   static const int kCatWidth = 34;
-  static const int kCatFrameCount = 5;
+  static const int kCatFrameCount = 6;
   static const int kRainbowOverlap = 13;
+  static const int kSleepingCatHeight = 24;
 
   static const int kHistorySize = 128;
   static const int kRainbowBands = 6;
@@ -54,6 +55,20 @@ private:
     return QRect(0, kCatHeight * frame_, kCatWidth, kCatHeight);
   }
 
+  inline QRect SleepingCatSourceRect() const {
+    return QRect(0, kCatHeight * kCatFrameCount, kCatWidth, kSleepingCatHeight);
+  }
+
+  inline QRect CatDestRect() const {
+    return QRect(width() - kCatWidth, (height() - kCatHeight) / 2,
+                 kCatWidth, kCatHeight);
+  }
+
+  inline QRect SleepingCatDestRect() const {
+    return QRect(width() - kCatWidth, (height() - kSleepingCatHeight) / 2,
+                 kCatWidth, kSleepingCatHeight);
+  }
+
 private:
   // "constants" that get initialised in the constructor
   float band_scale_[kRainbowBands];