X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=libs%2Fcanvas%2Fcanvas%2Fwave_view.h;h=f26c3a5c104dfeb8c1ee6d31d973406b303943ad;hb=c4c7598adbc9e5eca5fe04a23bb7e88fc0989f34;hp=fc39d7e555484f413de73f0bf165b553f7e6f2af;hpb=5e0e41e068a04603198a4e50464d794156f42c47;p=ardour.git

diff --git a/libs/canvas/canvas/wave_view.h b/libs/canvas/canvas/wave_view.h
index fc39d7e555..f26c3a5c10 100644
--- a/libs/canvas/canvas/wave_view.h
+++ b/libs/canvas/canvas/wave_view.h
@@ -28,6 +28,7 @@
 
 #include <glibmm/refptr.h>
 
+#include "canvas/visibility.h"
 #include "canvas/item.h"
 #include "canvas/fill.h"
 #include "canvas/outline.h"
@@ -44,14 +45,33 @@ class WaveViewTest;
 	
 namespace ArdourCanvas {
 
-class WaveView : virtual public Item, public Outline, public Fill
+class LIBCANVAS_API WaveView : public Item
 {
 public:
+
         enum Shape { 
 		Normal,
-		Rectified,
+		Rectified
         };
 
+	struct CacheEntry {
+		int channel;
+		Coord height;
+		float amplitude;
+		Color fill_color;
+		framepos_t start;
+		framepos_t end;
+		Cairo::RefPtr<Cairo::ImageSurface> image;
+
+	CacheEntry(int chan, Coord hght, float amp, Color fcl, framepos_t strt, framepos_t ed, Cairo::RefPtr<Cairo::ImageSurface> img)  :
+		
+		channel (chan), height (hght), amplitude (amp), fill_color (fcl), 
+			start (strt), end (ed), image (img) {} 
+	};
+
+	/* final ImageSurface rendered with colours */
+	Cairo::RefPtr<Cairo::ImageSurface> _image;
+	
     /* Displays a single channel of waveform data for the given Region.
 
        x = 0 in the waveview corresponds to the first waveform datum taken
@@ -71,7 +91,8 @@ public:
     */
 
 
-	WaveView (Group *, boost::shared_ptr<ARDOUR::AudioRegion>);
+	WaveView (Canvas *, boost::shared_ptr<ARDOUR::AudioRegion>);
+	WaveView (Item*, boost::shared_ptr<ARDOUR::AudioRegion>);
        ~WaveView ();
 
 	void render (Rect const & area, Cairo::RefPtr<Cairo::Context>) const;
@@ -97,7 +118,6 @@ public:
         double gradient_depth() const { return _gradient_depth; }
         void set_shape (Shape);
 
-        
         /* currently missing because we don't need them (yet):
 	   set_shape_independent();
 	   set_logscaled_independent()
@@ -115,6 +135,9 @@ public:
         void set_amplitude_above_axis (double v);
         double amplitude_above_axis () const { return _amplitude_above_axis; }
 
+	static void set_clip_level (double dB);
+	static PBD::Signal0<void> ClipLevelChanged;
+
 #ifdef CANVAS_COMPATIBILITY	
 	void*& property_gain_src () {
 		return _foo_void;
@@ -129,13 +152,14 @@ private:
 
         friend class ::WaveViewTest;
 
-	void invalidate_image ();
+	static std::map <boost::shared_ptr<ARDOUR::AudioSource>, std::vector <CacheEntry> > _image_cache;
+	void consolidate_image_cache () const;
+	void invalidate_image_cache ();
 
 	boost::shared_ptr<ARDOUR::AudioRegion> _region;
 	int    _channel;
 	double _samples_per_pixel;
 	Coord  _height;
-	Color  _wave_color;
         bool   _show_zero;
         Color  _zero_color;
         Color  _clip_color;
@@ -146,31 +170,30 @@ private:
         bool   _logscaled_independent;
         bool   _gradient_depth_independent;
         double _amplitude_above_axis;
+	float  _region_amplitude;
 
 	/** The `start' value to use for the region; we can't use the region's
 	 *  value as the crossfade editor needs to alter it.
 	 */
 	ARDOUR::frameoffset_t _region_start;
-    
-    
-        mutable ARDOUR::framepos_t _sample_start; 
-        mutable ARDOUR::framepos_t _sample_end; 
-        mutable Cairo::RefPtr<Cairo::ImageSurface> _image;
 
-        PBD::ScopedConnection invalidation_connection;
+        PBD::ScopedConnectionList invalidation_connection;
 
         static double _global_gradient_depth;
         static bool   _global_logscaled;
         static Shape  _global_shape;
         static bool   _global_show_waveform_clipping;
+	static double _clip_level;
 
         static PBD::Signal0<void> VisualPropertiesChanged;
 
         void handle_visual_property_change ();
+        void handle_clip_level_change ();
+
+	void get_image (Cairo::RefPtr<Cairo::ImageSurface>& image, framepos_t start, framepos_t end, double& image_offset) const;
 
-        void ensure_cache (ARDOUR::framepos_t sample_start, ARDOUR::framepos_t sample_end) const;
-        ArdourCanvas::Coord position (double) const;
-        void draw_image (ARDOUR::PeakData*, int npeaks) const;
+        ArdourCanvas::Coord y_extent (double, bool) const;
+	void draw_image (Cairo::RefPtr<Cairo::ImageSurface>&, ARDOUR::PeakData*, int) const;
 };
 
 }