vistext.h

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#pragma once

/*+
________________________________________________________________________

 (C) dGB Beheer B.V.; (LICENSE) http://opendtect.org/OpendTect_license.txt
 Author:        Kristofer Tingdahl
 Date:          4-22-2002
________________________________________________________________________


-*/

#include "visosg.h"
#include "visobject.h"
#include "fontdata.h"
#include "position.h"
#include "uistring.h"


namespace osgText { class Font; }

namespace osgGeo { class Text; }

namespace osg { class Drawable; class Vec3f; class Geode; }

namespace visBase
{

mExpClass(visBase) Text
{
public:
                                Text();
                                ~Text();

    enum Justification          { Left, Right, Center, Top, Bottom,
                                  TopLeft, TopRight, BottomLeft, BottomRight };

    enum CharacterSizeMode      { Object, Screen, ObjectWithScreenMaximum };

    enum AxisAlignment          { XY, ReversedXY, XZ, ReversedXZ,
                                  YZ, ReversedYZ, OnScreen, User };

    void                        setPosition(const osg::Vec3f&);
    void                        setPosition(const Coord3&,
                                            bool scenespace = false);
    Coord3                      getPosition() const;

    void                        setFontData(const FontData&, float pixeldens);
    const FontData&             getFontData() const     { return fontdata_; }

    void                        updateFontSize(float pixeldensity);

    void                        setText(const uiString&);
    const uiString&             getText() const { return text_; }

    void                        setColor(const Color&);
    Color                       getColor() const;

    void                        setJustification(Justification);
    int                         getJustification() const;

    osg::Drawable&              getDrawable();
    const osg::Drawable&        getDrawable() const;

    void                        setDisplayTransformation( const mVisTrans*);
    void                        setCharacterSizeMode( CharacterSizeMode );
    void                        setAxisAlignment( AxisAlignment );

    void                        useRotateToScreenElevation(bool);
    bool                        isRotateToScreenElevationUsed() const;
    void                        setRotateToScreenElevationAngle(float);
    float                       getRotateToScreenElevationAngle() const;
    void                        setRotateToScreenElevationPlane(
                                                const Coord3& refPlaneNormal);
    Coord3                      getRotateToScreenElevationPlane() const;

protected:
    const mVisTrans*            displaytrans_;
    osgGeo::Text*               osgtext_;
    uiString                    text_;

    FontData                    fontdata_;
};


mExpClass(visBase) OsgFontCreator
{
public:
    virtual                     ~OsgFontCreator()                       {}
    static osgText::Font*       create(const FontData&);
protected:
    static void                 setCreator(OsgFontCreator*);
    virtual osgText::Font*      createFont(const FontData&)             = 0;
};


mExpClass(visBase) Text2 : public VisualObjectImpl
{
public:
    static Text2*               create()
                                mCreateDataObj(Text2);

    int                         nrTexts() const         {return texts_.size();}
    int                         addText();
    void                        removeText(const Text*);
    void                        removeAll();

    void                        setFontData(const FontData&);

    const Text*                 text(int idx=0) const;
    Text*                       text(int idx=0);

    void                        setDisplayTransformation(const mVisTrans*);
    void                        setPixelDensity(float);
    float                       getPixelDensity() const { return pixeldensity_;}

protected:
    void                        translationChangeCB(CallBacker*);
                                ~Text2();
    osg::Geode*                 geode_;
    ManagedObjectSet<Text>      texts_;
    float                       pixeldensity_;
    const mVisTrans*            displaytransform_;
};


}; // Namespace