nux-1.16.0
CurveControl.h
00001 /*
00002  * Copyright 2010 Inalogic® Inc.
00003  *
00004  * This program is free software: you can redistribute it and/or modify it
00005  * under the terms of the GNU Lesser General Public License, as
00006  * published by the  Free Software Foundation; either version 2.1 or 3.0
00007  * of the License.
00008  *
00009  * This program is distributed in the hope that it will be useful, but
00010  * WITHOUT ANY WARRANTY; without even the implied warranties of
00011  * MERCHANTABILITY, SATISFACTORY QUALITY or FITNESS FOR A PARTICULAR
00012  * PURPOSE.  See the applicable version of the GNU Lesser General Public
00013  * License for more details.
00014  *
00015  * You should have received a copy of both the GNU Lesser General Public
00016  * License along with this program. If not, see <http://www.gnu.org/licenses/>
00017  *
00018  * Authored by: Jay Taoko <jaytaoko@inalogic.com>
00019  *
00020  */
00021 
00022 
00023 #ifndef CURVECONTROL_H
00024 #define CURVECONTROL_H
00025 
00026 namespace nux
00027 {
00028 
00029   typedef float (*FunctionCallback) (float);
00030 
00031   class CurveControl : public View
00032   {
00033   public:
00034     CurveControl (NUX_FILE_LINE_PROTO);
00035     ~CurveControl();
00036     virtual long ProcessEvent (IEvent &ievent, long TraverseInfo, long ProcessEventInfo);
00037     virtual void Draw (GraphicsEngine &GfxContext, bool force_draw);
00038     virtual void DrawContent (GraphicsEngine &GfxContext, bool force_draw);
00039     virtual void PostDraw (GraphicsEngine &GfxContext, bool force_draw);
00040 
00041 
00042   private:
00043     void SetXAxisBounds (float minX, float maxX);
00044     void SetYAxisBounds (float minY, float maxY);
00045     void SetFunctionCallback (FunctionCallback f);
00046     float EvalFunction (float x);
00047     void UpdateGraph();
00048 
00049     float m_minX, m_minY, m_maxX, m_maxY;
00050     FunctionCallback m_FunctionCallback;
00051 
00052   };
00053 
00054 
00055 }
00056 
00057 #endif // CURVECONTROL_H
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