0030537: Visualization - wrapping text in font text formatter
[occt.git] / src / OpenGl / OpenGl_TextBuilder.hxx
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317d68c9 1// Created on: 2015-06-18
2// Created by: Ilya SEVRIKOV
3// Copyright (c) 2015 OPEN CASCADE SAS
4//
5// This file is part of Open CASCADE Technology software library.
6//
7// This library is free software; you can redistribute it and/or modify it under
8// the terms of the GNU Lesser General Public License version 2.1 as published
9// by the Free Software Foundation, with special exception defined in the file
10// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
11// distribution for complete text of the license and disclaimer of any warranty.
12//
13// Alternatively, this file may be used under the terms of Open CASCADE
14// commercial license or contractual agreement.
15
16#ifndef OpenGl_TextBuilder_Header
17#define OpenGl_TextBuilder_Header
18
317d68c9 19#include <OpenGl_Context.hxx>
20#include <OpenGl_Font.hxx>
21#include <OpenGl_VertexBuffer.hxx>
22#include <OpenGl_VertexBufferEditor.hxx>
23#include <OpenGl_Vec.hxx>
24
25#include <NCollection_Vector.hxx>
26#include <NCollection_Handle.hxx>
27
60f7b225 28class Font_TextFormatter;
317d68c9 29
30//! This class generates primitive array required for rendering textured text using OpenGl_Font instance.
31class OpenGl_TextBuilder
32{
33public:
34
35 //! Creates empty object.
978ca537 36 Standard_EXPORT OpenGl_TextBuilder();
317d68c9 37
38 //! Creates texture quads for the given text.
60f7b225 39 Standard_EXPORT void Perform (const Handle(Font_TextFormatter)& theFormatter,
317d68c9 40 const Handle(OpenGl_Context)& theContext,
41 OpenGl_Font& theFont,
42 NCollection_Vector<GLuint>& theTextures,
43 NCollection_Vector<Handle(OpenGl_VertexBuffer)>& theVertsPerTexture,
44 NCollection_Vector<Handle(OpenGl_VertexBuffer)>& theTCrdsPerTexture);
45
46protected: //! @name class auxillary methods
47
60f7b225 48 Standard_EXPORT void createGlyphs (const Handle(Font_TextFormatter)& theFormatter,
317d68c9 49 const Handle(OpenGl_Context)& theCtx,
50 OpenGl_Font& theFont,
51 NCollection_Vector<GLuint>& theTextures,
52 NCollection_Vector< NCollection_Handle < NCollection_Vector <OpenGl_Vec2> > >& theVertsPerTexture,
53 NCollection_Vector< NCollection_Handle < NCollection_Vector <OpenGl_Vec2> > >& theTCrdsPerTexture);
54
55protected: //! @name class auxillary fields
56
57 NCollection_Vector<OpenGl_Font::Tile> myTileRects;
58 OpenGl_VertexBufferEditor<OpenGl_Vec2> myVboEditor;
59};
60
61#endif // OpenGl_TextBuilder_Header