/usr/include/oce/OpenGl_TextFormatter.hxx is in liboce-visualization-dev 0.15-5.
This file is owned by root:root, with mode 0o644.
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// Created by: Kirill GAVRILOV
// Copyright (c) 2013 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and / or modify it
// under the terms of the GNU Lesser General Public version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.
#ifndef _OpenGl_TextFormatter_H__
#define _OpenGl_TextFormatter_H__
#include <OpenGl_Font.hxx>
#include <OpenGl_VertexBufferEditor.hxx>
#include <Graphic3d_HorizontalTextAlignment.hxx>
#include <Graphic3d_VerticalTextAlignment.hxx>
#include <NCollection_String.hxx>
typedef NCollection_Array1<OpenGl_Vec2> OpenGl_Vec2Array;
typedef NCollection_Handle<OpenGl_Vec2Array> Handle(OpenGl_Vec2Array);
//! This class intended to prepare formatted text.
class OpenGl_TextFormatter : public Standard_Transient
{
public:
//! Default constructor.
Standard_EXPORT OpenGl_TextFormatter();
//! Setup alignment style.
Standard_EXPORT void SetupAlignment (const Graphic3d_HorizontalTextAlignment theAlignX,
const Graphic3d_VerticalTextAlignment theAlignY);
//! Reset current progress.
Standard_EXPORT void Reset();
//! Render specified text to inner buffer.
Standard_EXPORT void Append (const Handle(OpenGl_Context)& theCtx,
const NCollection_String& theString,
OpenGl_Font& theFont);
//! Perform formatting on the buffered text.
//! Should not be called more than once after initialization!
Standard_EXPORT void Format();
//! Retrieve formatting results.
Standard_EXPORT void Result (NCollection_Vector<GLuint>& theTextures,
NCollection_Vector< NCollection_Handle <NCollection_Vector <OpenGl_Vec2> > >& theVertsPerTexture,
NCollection_Vector< NCollection_Handle <NCollection_Vector <OpenGl_Vec2> > >& theTCrdsPerTexture) const;
//! Retrieve formatting results.
Standard_EXPORT void Result (const Handle(OpenGl_Context)& theCtx,
NCollection_Vector<GLuint>& theTextures,
NCollection_Vector<Handle(OpenGl_VertexBuffer)>& theVertsPerTexture,
NCollection_Vector<Handle(OpenGl_VertexBuffer)>& theTCrdsPerTexture) const;
//! Retrieve formatting results.
Standard_EXPORT void Result (const Handle(OpenGl_Context)& theCtx,
NCollection_Vector<GLuint>& theTextures,
NCollection_Vector<Handle(OpenGl_Vec2Array)>& theVertsPerTexture,
NCollection_Vector<Handle(OpenGl_Vec2Array)>& theTCrdsPerTexture) const;
//! @return width of formatted text.
inline Standard_ShortReal ResultWidth() const
{
return myBndWidth;
}
//! @return height of formatted text.
inline Standard_ShortReal ResultHeight() const
{
return myLineSpacing * Standard_ShortReal(myLinesNb);
}
//! @param bounding box.
inline void BndBox (Font_FTFont::Rect& theBndBox) const
{
theBndBox.Left = 0.0f;
switch (myAlignX)
{
default:
case Graphic3d_HTA_LEFT: theBndBox.Right = myBndWidth; break;
case Graphic3d_HTA_RIGHT: theBndBox.Right = -myBndWidth; break;
case Graphic3d_HTA_CENTER:
{
theBndBox.Left = -0.5f * myBndWidth;
theBndBox.Right = 0.5f * myBndWidth;
break;
}
}
theBndBox.Top = myBndTop;
theBndBox.Bottom = theBndBox.Top - myLineSpacing * Standard_ShortReal(myLinesNb);
}
protected: //! @name class auxiliary methods
//! Move glyphs on the current line to correct position.
Standard_EXPORT void newLine (const Standard_Integer theLastRect);
protected: //! @name configuration
Graphic3d_HorizontalTextAlignment myAlignX; //!< horizontal alignment style
Graphic3d_VerticalTextAlignment myAlignY; //!< vertical alignment style
Standard_Integer myTabSize; //!< horizontal tabulation width (number of space symbols)
protected: //! @name input data
NCollection_String myString; //!< currently rendered text
OpenGl_Vec2 myPen; //!< current pen position
NCollection_Vector<OpenGl_Font::Tile>
myRects; //!< glyphs rectangles
Standard_Integer myRectsNb; //!< rectangles number
NCollection_Vector<Standard_ShortReal>
myNewLines; //!< position at LF
Standard_ShortReal myLineSpacing; //!< line spacing (computed as maximum of all fonts involved in text formatting)
Standard_ShortReal myAscender; //!<
bool myIsFormatted; //!< formatting state
protected:
mutable OpenGl_VertexBufferEditor<OpenGl_Vec2> myVboEditor;
protected: //! @name temporary variables for formatting routines
Standard_Integer myLinesNb; //!< overall (new)lines number (including splitting by width limit)
Standard_Integer myRectLineStart; //!< id of first rectangle on the current line
Standard_Integer myRectWordStart; //!< id of first rectangle in the current word
Standard_Integer myNewLineNb;
Standard_ShortReal myPenCurrLine; //!< current baseline position
Standard_ShortReal myLineLeft; //!< left x position of first glyph on line before formatting applied
Standard_ShortReal myLineTail;
Standard_ShortReal myBndTop;
Standard_ShortReal myBndWidth;
OpenGl_Vec2 myMoveVec; //!< local variable
public:
DEFINE_STANDARD_RTTI(OpenGl_TextFormatter) // Type definition
};
DEFINE_STANDARD_HANDLE(OpenGl_TextFormatter, Standard_Transient)
#endif // _OpenGl_TextFormatter_H__
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