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/********************************************************************************
* *
* C o l o r R i n g W i d g e t *
* *
*********************************************************************************
* Copyright (C) 2005,2022 by Jeroen van der Zijp. All Rights Reserved. *
*********************************************************************************
* This library is free software; you can redistribute it and/or modify *
* it under the terms of the GNU Lesser General Public License as published by *
* the Free Software Foundation; either version 3 of the License, or *
* (at your option) any later version. *
* *
* This library is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU Lesser General Public License for more details. *
* *
* You should have received a copy of the GNU Lesser General Public License *
* along with this program. If not, see <http://www.gnu.org/licenses/> *
********************************************************************************/
#ifndef FXCOLORRING_H
#define FXCOLORRING_H
#ifndef FXFRAME_H
#include "FXFrame.h"
#endif
namespace FX {
class FXImage;
/**
* A ColorRing widget provides an intuitive way to specify a color.
* The outer ring of the widget is rotated to control the hue of the color
* being specified, while the inner triangle varies the color saturation
* and the brightness of the color. The color saturation axis of the
* triangle goes from a fully saturated "pure" color to "pastel" color;
* the brightness goes from black to a bright color.
* ColorRing supports justify options to allow control of the placement of
* the ring inside the rectangular space of the widget.
*/
class FXAPI FXColorRing : public FXFrame {
FXDECLARE(FXColorRing)
protected:
FXImage *dial; // HSV dial image
FXfloat hsv[3]; // Hue, saturation, value
FXint ringwidth; // Width of hue ring
FXint ringouter; // Outer radius
FXint ringinner; // Inner radius
FXint dialx; // Dial x location
FXint dialy; // Dial y location
FXint satvalx; // Saturation value x
FXint satvaly; // Saturation value y
FXint huex; // Hue x
FXint huey; // Hue y
FXint clrx; // Color corner of triangle
FXint clry;
FXint blkx; // Black corner of triangle
FXint blky;
FXint whtx; // White corner of triangle
FXint whty;
FXString tip; // Tooltip value
FXString help; // Help value
FXuchar mode; // Mode widget is in
protected:
FXColorRing();
void updatering();
FXfloat hueFromXY(FXint x,FXint y) const;
void hueToXY(FXint& x,FXint& y,FXfloat hue) const;
void satValToXY(FXint& x,FXint& y,FXfloat s,FXfloat v) const;
void satValFromXY(FXfloat& s,FXfloat& v,FXint x,FXint y) const;
FXbool inCorner(FXint x,FXint y) const;
FXbool inHueRing(FXint x,FXint y) const;
FXbool inTriangle(FXint x,FXint y) const;
protected:
enum {
MOUSE_NONE, // No mouse operation
MOUSE_HUE, // Moving in hue-ring
MOUSE_SATVAL // Moving in saturation/value triangle
};
private:
FXColorRing(const FXColorRing&);
FXColorRing &operator=(const FXColorRing&);
public:
long onPaint(FXObject*,FXSelector,void*);
long onLeftBtnPress(FXObject*,FXSelector,void*);
long onLeftBtnRelease(FXObject*,FXSelector,void*);
long onMotion(FXObject*,FXSelector,void*);
long onMouseWheel(FXObject*,FXSelector,void*);
long onCmdSetHelp(FXObject*,FXSelector,void*);
long onCmdGetHelp(FXObject*,FXSelector,void*);
long onCmdSetTip(FXObject*,FXSelector,void*);
long onCmdGetTip(FXObject*,FXSelector,void*);
long onQueryHelp(FXObject*,FXSelector,void*);
long onQueryTip(FXObject*,FXSelector,void*);
public:
/// Construct color ring with initial color clr
FXColorRing(FXComposite* p,FXObject* tgt=nullptr,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);
/// Create server-side resources
virtual void create();
/// Detach server-side resources
virtual void detach();
/// Perform layout
virtual void layout();
/// Return default width
virtual FXint getDefaultWidth();
/// Return default height
virtual FXint getDefaultHeight();
/// Change hue
void setHue(FXfloat h);
/// Return hue
FXfloat getHue() const { return hsv[0]; }
/// Change saturation
void setSat(FXfloat s);
/// Return saturation
FXfloat getSat() const { return hsv[1]; }
/// Change value
void setVal(FXfloat v);
/// Return value
FXfloat getVal() const { return hsv[2]; }
/// Set hue, saturation, value
void setHueSatVal(FXfloat h,FXfloat s,FXfloat v);
/// Change width of hue ring
void setRingWidth(FXint rw);
/// Return width of hue ring
FXint getRingWidth() const { return ringwidth; }
/// Set the current justification mode
void setJustify(FXuint style);
/// Get the current justification mode
FXuint getJustify() const;
/// Set status line help text for this color well
void setHelpText(const FXString& text){ help=text; }
/// Get status line help text for this color well
const FXString& getHelpText() const { return help; }
/// Set tool tip message for this color well
void setTipText(const FXString& text){ tip=text; }
/// Get tool tip message for this color well
const FXString& getTipText() const { return tip; }
/// Save color well to a stream
virtual void save(FXStream& store) const;
/// Load color well from a stream
virtual void load(FXStream& store);
/// Destructor
virtual ~FXColorRing();
};
}
#endif
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