SGI Developer Toolbox 6.1/SGI Developer Toolbox 6.1 - Disc 4.iso/src/exampleCode/inventor/SpaceballViewer/MyColorSlider.h

C/C++ Source or Header | 1994-08-02 | 5.0 KB | 160 lines

/*
 * Copyright (c) 1990-1992, 1994 Silicon Graphics, Inc.
 *
 * Permission to use, copy, modify, distribute, and sell this software and
 * its documentation for any purpose is hereby granted without fee, provided
 * that the name of Silicon Graphics may not be used in any advertising or
 * publicity relating to the software without the specific, prior written
 * permission of Silicon Graphics.
 *
 * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
 * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
 *
 * IN NO EVENT SHALL SILICON GRAPHICS BE LIABLE FOR ANY SPECIAL, INCIDENTAL,
 * INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, OR ANY DAMAGES WHATSOEVER
 * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER OR NOT ADVISED OF THE
 * POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF LIABILITY, ARISING OUT OF OR IN
 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */
//  -*- C++ -*-

/*
 * Copyright (C) 1990,91,92   Silicon Graphics, Inc.
 *
 _______________________________________________________________________
 ______________  S I L I C O N   G R A P H I C S   I N C .  ____________
 |
 |   $Revision: 1.1008 $
 |
 |   Description:
 |    This file contains the MyColorSlider class which is an MySlider
 |  (GL slider within an GLX widget) with build in policies. You can only
 |  build a set of pre-defined color sliders (see Type enum below).
 |
 |   Classes:
 |    MyColorSlider
 |
 |   Author(s)    : Alain Dumesny
 |
 ______________  S I L I C O N   G R A P H I C S   I N C .  ____________
 _______________________________________________________________________
 */

#ifndef  _SO_XT_COLOR_SLIDER_
#define  _SO_XT_COLOR_SLIDER_

#include "MySlider.h"

class SbColor;
class SbVec2f;


//////////////////////////////////////////////////////////////////////////////
//
//  Class: MyColorSlider
//
//    This class defines the color slider which is a set of predefined
//  sliders (R, G, B, H, S, V,..) with special behaviors.
//
//////////////////////////////////////////////////////////////////////////////

// C-api: prefix=SoXtColSldr
class MyColorSlider : public MySlider {

 public:

    //
    // list of color sliders types
    //
    enum Type {
    RED_SLIDER,
    GREEN_SLIDER,
    BLUE_SLIDER,
    HUE_SLIDER,
    SATURATION_SLIDER,
    VALUE_SLIDER,
    INTENSITY_SLIDER, // independent of the slider value
    };

    // Constructor/Destructor
    MyColorSlider(
    Widget parent = NULL,
    const char *name = NULL,
    SbBool buildInsideParent = TRUE,
    MyColorSlider::Type type = INTENSITY_SLIDER);
    ~MyColorSlider();

    //
    // Routine used to specify the slider value and also the top region
    // color (WYSIWYGmode in most cases). Users should call this routine
    // instead of the base class setValue() routine if they want the color
    // slider top region to correctly reflect the current color.
    // (code is optimized for WYSIWYGmode off)
    //
    // NOTE: routine expects
    //        an rgb color for R, G or B slider type
    //        an hsv color for H, S, or V slider type
    //        an rgb color for Intensity slider type
    //
    // NOTE: if calling setBaseColor() changes the thumb position the
    // valueChanged callbacks will be called with the new value.
    //
    // C-api: name=setBaseCol
    void    setBaseColor(const float rgbOrHsv[3]);
    // C-api: name=getBaseCol
    const float *getBaseColor()         { return color; }

    //
    // This routine sets the WYSIWYG (What You See Is What You Get) mode
    // to be true or false (default FALSE). Immediate mode.
    // This has no effect on monochrome sliders.
    //
    void    setWYSIWYG(SbBool trueOrFalse);    // default FALSE
    SbBool      isWYSIWYG()             { return WYSIWYGmode; }

    // returns the type of the slider
    MyColorSlider::Type getType()    { return type; }

  protected:

    // This constructor takes a boolean whether to build the widget now.
    // Subclasses can pass FALSE, then call MySlider::buildWidget()
    // when they are ready for it to be built.
    SoEXTENDER
    MyColorSlider(
    Widget parent,
    const char *name,
    SbBool buildInsideParent,
    MyColorSlider::Type type,
    SbBool buildNow);

    // redefine this routine to cache slider top geometry
    virtual void    sizeChanged(const SbVec2s &newSize);

    // redefine this routine to do the actual slider top region drawing.
    // This routine is automatically called by the MySlider::redraw() routine.
    virtual void    drawSliderTopRegion();

  private:

    // local vars
    Boolean        WYSIWYGmode;
    Type        type;
    float        color[3];
    SbColor        *defaultColors, *colors;
    SbVec2f        *geometry;

    // routine that make the default and WYSIWYG colors
    void    makeDefaultColors();
    void    makeWYSIWYGcolors();

    static void        sliderChangedCB(void *, float val);

    // this is called by both constructors
    void constructorCommon(MyColorSlider::Type type, SbBool buildNow);
};


#endif  /* _SO_XT_COLOR_SLIDER_ */