SLText.h

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/**
 * \file      SLText.h
 * \authors   Marcus Hudritsch
 * \date      July 2014
 * \authors   Marcus Hudritsch
 * \copyright http://opensource.org/licenses/GPL-3.0
 * \remarks   Please use clangformat to format the code. See more code style on
 *            https://github.com/cpvrlab/SLProject4/wiki/SLProject-Coding-Style
*/
 
#ifndef SLTEXT_H
#define SLTEXT_H
 
#include <SLGLVertexArray.h>
#include <SLNode.h>
#include <SLTexFont.h>
 
class SLSceneView;
class SLRay;
class SLAABBox;
 
//-----------------------------------------------------------------------------
//! SLText creates a mesh using a textured font from SLTexFont
/*!
The text is passed as standard string that can contain line breaks (\\n).
Line breaks are only inserted if a maxWidth is defined. If the lineHeightFactor
is 1.0 the minimal line spacing is used.
*/
class SLText : public SLNode
{
public:
    SLText(SLstring   text,
           SLTexFont* font, // = SLTexFont::font09,
           SLCol4f    txtCol           = SLCol4f::WHITE,
           SLfloat    maxWidth         = 0.0f,
           SLfloat    lineHeightFactor = 1.3f);
 
    ~SLText() { ; }
 
    void      drawText(SLSceneView* sv);
    void      statsRec(SLNodeStats& stats) override;
    SLAABBox& updateAABBRec(SLbool updateAlsoAABBinOS) override;
    SLbool    hitRec(SLRay* ray) override { return false; }
    void      drawMesh(SLSceneView* sv) override { drawText(sv); };
    void      preShade(SLRay* ray) { ; }
 
    // Getters
    SLstring text() { return _text; }
    SLCol4f  color() { return _color; }
    SLVec2f  size() { return _font->calcTextSize(_text,
                                                _maxW,
                                                _lineH); }
    SLfloat  fontHeightPX() { return (SLfloat)_font->charsHeight; }
    SLint    length() { return (SLint)_text.length(); }
 
protected:
    SLstring        _text;  //!< Text of the button
    SLTexFont*      _font;  //!< Font pointer of the preloaded font
    SLCol4f         _color; //!< RGBA-Color of the text
    SLfloat         _maxW;  //!< Max. width in pix. for wrapped text
    SLfloat         _lineH; //!< Line height factor for wrapped text
    SLGLVertexArray _vao;   //!< Vertex array for rendering
};
//-----------------------------------------------------------------------------
#endif