coColorBar.h

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/* This file is part of COVISE.
 
   You can use it under the terms of the GNU Lesser General Public License
   version 2.1 or later, see lgpl-2.1.txt.
 
 * License: LGPL 2+ */
 
// +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
// class coColorBar
//
// derived from coMenuItem
// colorbar is a window containing a texture and labels
//
// Initial version: 2002-01, dr
// +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
// (C) 2002 by Vircinity IT Consulting
// +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 
#ifndef _CO_COLOR_BAR_H_
#define _CO_COLOR_BAR_H_
 
#define MAX_LABELS 18
 
#include <OpenVRUI/coMenuItem.h>
#include <util/coTypes.h>
#include <vector>
 
namespace vrui
{
class coLabel;
class coRowContainer;
class coTexturedBackground;
class coColoredBackground;
}
 
namespace opencover
{
 
class PLUGIN_UTILEXPORT coColorBar : public vrui::coMenuItem
{
private:
    vrui::coColoredBackground *background_;
 
    // topspacer and texture in vertical row container
    vrui::coColoredBackground *vspace_;
    vrui::coTexturedBackground *texture_;
    vrui::coRowContainer *textureAndVspace_;
 
    // hspacers and labels in horiz containers, all labels in vert container
    vrui::coLabel *labels_[MAX_LABELS];
    vrui::coLabel *speciesLabel_ = nullptr;
    vrui::coTexturedBackground *hspaces_[MAX_LABELS];
    vrui::coRowContainer *labelAndHspaces_[MAX_LABELS];
    vrui::coColoredBackground *vspaces_[MAX_LABELS];
    vrui::coRowContainer *allLabels_;
 
    // horiz container around textureAndVspacer and all labels
    vrui::coRowContainer *textureAndLabels_;
    // vert container around textureAndLabels_ and species label
    vrui::coRowContainer *everything_ = nullptr;
 
    int numLabels_; // number of labels, max
    float labelValues_[MAX_LABELS]; // numerical values of labels
    char format_str_[32]; // precision of float values
 
    int numColors_;
    float min_, max_;
    std::vector<unsigned char> image_, tickImage_;
    std::string name_; // the name of the colors module for example Colors_1
    std::string species_;
 
    void makeImage(int numColors, const float *r, const float *g, const float *b, const float *a);
    void makeTickImage();
    void makeLabelValues();
 
public:
    coColorBar(const std::string &name, const std::string &species, float min, float max, int numColors, const float *r, const float *g, const float *b, const float *a, bool inMenu=true);
 
    ~coColorBar();
 
    void update(float min, float max, int numColors, const float *r, const float *g, const float *b, const float *a);
 
    const char *getName() const override;
 
    virtual vrui::coUIElement *getUIElement() override;
 
    virtual const char *getClassName() const override;
    virtual bool isOfClassName(const char *) const override;
};
}
 
#endif