Panda3D

pStatPianoRoll.h

00001 // Filename: pStatPianoRoll.h
00002 // Created by:  drose (18Jul00)
00003 //
00004 ////////////////////////////////////////////////////////////////////
00005 //
00006 // PANDA 3D SOFTWARE
00007 // Copyright (c) Carnegie Mellon University.  All rights reserved.
00008 //
00009 // All use of this software is subject to the terms of the revised BSD
00010 // license.  You should have received a copy of this license along
00011 // with this source code in a file named "LICENSE."
00012 //
00013 ////////////////////////////////////////////////////////////////////
00014 
00015 #ifndef PSTATPIANOROLL_H
00016 #define PSTATPIANOROLL_H
00017 
00018 #include "pandatoolbase.h"
00019 
00020 #include "pStatGraph.h"
00021 #include "pStatMonitor.h"
00022 #include "pStatClientData.h"
00023 
00024 #include "luse.h"
00025 #include "vector_int.h"
00026 
00027 #include "pmap.h"
00028 
00029 class PStatFrameData;
00030 
00031 ////////////////////////////////////////////////////////////////////
00032 //       Class : PStatPianoRoll
00033 // Description : This is an abstract class that presents the interface
00034 //               for drawing a piano-roll type chart: it shows the
00035 //               time spent in each of a number of collectors as a
00036 //               horizontal bar of color, with time as the horizontal
00037 //               axis.
00038 //
00039 //               This class just manages all the piano-roll logic; the
00040 //               actual nuts and bolts of drawing pixels is left to a
00041 //               user-derived class.
00042 ////////////////////////////////////////////////////////////////////
00043 class PStatPianoRoll : public PStatGraph {
00044 public:
00045   PStatPianoRoll(PStatMonitor *monitor, int thread_index,
00046                  int xsize, int ysize);
00047   virtual ~PStatPianoRoll();
00048 
00049   void update();
00050 
00051   INLINE void set_horizontal_scale(double time_width);
00052   INLINE double get_horizontal_scale() const;
00053 
00054   INLINE int timestamp_to_pixel(double time) const;
00055   INLINE double pixel_to_timestamp(int x) const;
00056   INLINE int height_to_pixel(double value) const;
00057   INLINE double pixel_to_height(int y) const;
00058 
00059 protected:
00060   void changed_size(int xsize, int ysize);
00061   void force_redraw();
00062   virtual void normal_guide_bars();
00063 
00064   virtual void begin_draw();
00065   virtual void begin_row(int row);
00066   virtual void draw_bar(int row, int from_x, int to_x);
00067   virtual void end_row(int row);
00068   virtual void end_draw();
00069   virtual void idle();
00070 
00071 private:
00072   void compute_page(const PStatFrameData &frame_data);
00073 
00074 protected:
00075   int _thread_index;
00076 
00077 private:
00078   double _time_width;
00079   double _start_time;
00080 
00081   class ColorBar {
00082   public:
00083     double _start;
00084     double _end;
00085   };
00086   typedef pvector<ColorBar> ColorBars;
00087 
00088   class BarBuilder {
00089   public:
00090     BarBuilder();
00091     void clear();
00092     void add_data_point(double time, bool is_start);
00093     void finish(double time);
00094 
00095     bool _is_new;
00096     ColorBars _color_bars;
00097   };
00098 
00099   typedef pmap<int, BarBuilder> PageData;
00100   PageData _page_data;
00101   int _current_frame;
00102 };
00103 
00104 #include "pStatPianoRoll.I"
00105 
00106 #endif
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