src/Renderer/TrailRenderer.hpp

   1 /*
   2 Copyright_License {
   3
   4   XCSoar Glide Computer - http://www.xcsoar.org/
   5   Copyright (C) 2000-2013 The XCSoar Project
   6   A detailed list of copyright holders can be found in the file "AUTHORS".
   7
   8   This program is free software; you can redistribute it and/or
   9   modify it under the terms of the GNU General Public License
  10   as published by the Free Software Foundation; either version 2
  11   of the License, or (at your option) any later version.
  12
  13   This program is distributed in the hope that it will be useful,
  14   but WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16   GNU General Public License for more details.
  17
  18   You should have received a copy of the GNU General Public License
  19   along with this program; if not, write to the Free Software
  20   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  21 }
  22 */
  23
  24 #ifndef XCSOAR_TRAIL_RENDERER_HPP
  25 #define XCSOAR_TRAIL_RENDERER_HPP
  26
  27 #include "Util/AllocatedArray.hpp"
  28 #include "Engine/Trace/Point.hpp"
  29 #include "Engine/Trace/Vector.hpp"
  30
  31 struct RasterPoint;
  32 class Canvas;
  33 class TraceComputer;
  34 class Projection;
  35 class WindowProjection;
  36 class ContestTraceVector;
  37 struct TrailLook;
  38 struct NMEAInfo;
  39 struct DerivedInfo;
  40 struct TrailSettings;
  41
  42 class TrailRenderer {
  43   const TrailLook &look;
  44
  45   TracePointVector trace;
  46   AllocatedArray<RasterPoint> points;
  47
  48 public:
  49   TrailRenderer(const TrailLook &_look):look(_look) {}
  50
  51   /**
  52    * Load the full trace into this object.
  53    */
  54   bool LoadTrace(const TraceComputer &trace_computer);
  55
  56   /**
  57    * Load a filtered trace into this object.
  58    */
  59   bool LoadTrace(const TraceComputer &trace_computer, unsigned min_time,
  60                  const WindowProjection &projection);
  61
  62   gcc_pure
  63   TaskProjection GetBounds(const GeoPoint fallback_location) const;
  64
  65   void Draw(Canvas &canvas, const TraceComputer &trace_computer,
  66             const WindowProjection &projection, unsigned min_time,
  67             bool enable_traildrift, const RasterPoint pos, const NMEAInfo &basic,
  68             const DerivedInfo &calculated, const TrailSettings &settings);
  69
  70   /**
  71    * Draw the trace that was obtained by LoadTrace() with the trace pen.
  72    */
  73   void Draw(Canvas &canvas, const WindowProjection &projection);
  74
  75   void Draw(Canvas &canvas, const TraceComputer &trace_computer,
  76             const WindowProjection &projection, unsigned min_time);
  77
  78   /**
  79    * Draw a ContestTraceVector.  The caller must select a Pen.
  80    */
  81   void DrawTraceVector(Canvas &canvas, const WindowProjection &projection,
  82                        const ContestTraceVector &trace);
  83
  84 private:
  85   void DrawTraceVector(Canvas &canvas, const Projection &projection,
  86                        const TracePointVector &trace);
  87 };
  88
  89 #endif