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FXColorWheel.h

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00001 /********************************************************************************
00002 *                                                                               *
00003 *                        C o l o r W h e e l   W i d g e t                      *
00004 *                                                                               *
00005 *********************************************************************************
00006 * Copyright (C) 2001,2009 by Jeroen van der Zijp.   All Rights Reserved.        *
00007 *********************************************************************************
00008 * This library is free software; you can redistribute it and/or modify          *
00009 * it under the terms of the GNU Lesser General Public License as published by   *
00010 * the Free Software Foundation; either version 3 of the License, or             *
00011 * (at your option) any later version.                                           *
00012 *                                                                               *
00013 * This library is distributed in the hope that it will be useful,               *
00014 * but WITHOUT ANY WARRANTY; without even the implied warranty of                *
00015 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the                 *
00016 * GNU Lesser General Public License for more details.                           *
00017 *                                                                               *
00018 * You should have received a copy of the GNU Lesser General Public License      *
00019 * along with this program.  If not, see <http://www.gnu.org/licenses/>          *
00020 *********************************************************************************
00021 * $Id: FXColorWheel.h,v 1.37 2009/01/06 13:07:22 fox Exp $                      *
00022 ********************************************************************************/
00023 #ifndef FXCOLORWHEEL_H
00024 #define FXCOLORWHEEL_H
00025 
00026 #ifndef FXFRAME_H
00027 #include "FXFrame.h"
00028 #endif
00029 
00030 namespace FX {
00031 
00032 
00033 class FXImage;
00034 
00035 
00036 /**
00037 * A ColorWheel is a widget which controls the hue and saturation values of a
00038 * color.  It is most often used together with a Color Bar which controls the
00039 * brighness.
00040 */
00041 class FXAPI FXColorWheel : public FXFrame {
00042   FXDECLARE(FXColorWheel)
00043 protected:
00044   FXImage  *dial;         // HSV dial image
00045   FXfloat   hsv[3];       // Hue, saturation, value
00046   FXint     dialx;        // Dial x location
00047   FXint     dialy;        // Dial Y location
00048   FXint     spotx;        // Spot x location
00049   FXint     spoty;        // Spot Y location
00050   FXString  tip;          // Tooltip value
00051   FXString  help;         // Help value
00052 protected:
00053   FXColorWheel();
00054   void updatedial();
00055   void movespot(FXint x,FXint y);
00056   FXbool hstoxy(FXint& x,FXint& y,FXfloat h,FXfloat s) const;
00057   FXbool xytohs(FXfloat& h,FXfloat& s,FXint x,FXint y) const;
00058 private:
00059   FXColorWheel(const FXColorWheel&);
00060   FXColorWheel &operator=(const FXColorWheel&);
00061 public:
00062   long onPaint(FXObject*,FXSelector,void*);
00063   long onLeftBtnPress(FXObject*,FXSelector,void*);
00064   long onLeftBtnRelease(FXObject*,FXSelector,void*);
00065   long onMotion(FXObject*,FXSelector,void*);
00066   long onMouseWheel(FXObject*,FXSelector,void*);
00067   long onCmdSetHelp(FXObject*,FXSelector,void*);
00068   long onCmdGetHelp(FXObject*,FXSelector,void*);
00069   long onCmdSetTip(FXObject*,FXSelector,void*);
00070   long onCmdGetTip(FXObject*,FXSelector,void*);
00071   long onQueryHelp(FXObject*,FXSelector,void*);
00072   long onQueryTip(FXObject*,FXSelector,void*);
00073 public:
00074 
00075   /// Construct color wheel with initial color clr
00076   FXColorWheel(FXComposite* p,FXObject* tgt=NULL,FXSelector sel=0,FXuint opts=FRAME_NORMAL,FXint x=0,FXint y=0,FXint w=0,FXint h=0,FXint pl=DEFAULT_PAD,FXint pr=DEFAULT_PAD,FXint pt=DEFAULT_PAD,FXint pb=DEFAULT_PAD);
00077 
00078   /// Create server-side resources
00079   virtual void create();
00080 
00081   /// Detach server-side resources
00082   virtual void detach();
00083 
00084   /// Perform layout
00085   virtual void layout();
00086 
00087   /// Return default width
00088   virtual FXint getDefaultWidth();
00089 
00090   /// Return default height
00091   virtual FXint getDefaultHeight();
00092 
00093   /// Change hue
00094   void setHue(FXfloat h);
00095 
00096   /// Return hue
00097   FXfloat getHue() const { return hsv[0]; }
00098 
00099   /// Change saturation
00100   void setSat(FXfloat s);
00101 
00102   /// Return saturation
00103   FXfloat getSat() const { return hsv[1]; }
00104 
00105   /// Change value
00106   void setVal(FXfloat v);
00107 
00108   /// Return value
00109   FXfloat getVal() const { return hsv[2]; }
00110 
00111   /// Set hue, saturation, value
00112   void setHueSatVal(FXfloat h,FXfloat s,FXfloat v);
00113 
00114   /// Set status line help text for this color well
00115   void setHelpText(const FXString& text){ help=text; }
00116 
00117   /// Get status line help text for this color well
00118   const FXString& getHelpText() const { return help; }
00119 
00120   /// Set tool tip message for this color well
00121   void setTipText(const FXString& text){ tip=text; }
00122 
00123   /// Get tool tip message for this color well
00124   const FXString& getTipText() const { return tip; }
00125 
00126   /// Save color well to a stream
00127   virtual void save(FXStream& store) const;
00128 
00129   /// Load color well from a stream
00130   virtual void load(FXStream& store);
00131 
00132   /// Destructor
00133   virtual ~FXColorWheel();
00134   };
00135 
00136 }
00137 
00138 #endif

Copyright © 1997-2009 Jeroen van der Zijp