0012121: Optimization of existing selection classes
[occt.git] / src / OpenGl / OpenGl_FontMgr.hxx
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7fd59977 1#ifndef OPENGL_FONT_MGR_H
2#define OPENGL_FONT_MGR_H
3
7fd59977 4#ifdef WNT
5# include <windows.h>
6# include <stdlib.h>
7#endif
8
9#include <FTFont.h>
10
11#include <InterfaceGraphic.hxx>
12#include <TCollection_HAsciiString.hxx>
13#include <NCollection_List.hxx>
14#include <NCollection_DataMap.hxx>
15#include <Graphic3d_NListOfHAsciiString.hxx>
16#include <OSD_FontMgr.hxx>
17
18void dump_texture();
19
20class OpenGl_FontMgr
21{
13a22457 22 public:
7fd59977 23 static OpenGl_FontMgr* instance();
24
25 int request_font( const Handle(TCollection_HAsciiString)& fontName,
13a22457
S
26 const OSD_FontAspect fontAspect,
27 const Standard_Integer fontHeight );
7fd59977 28
29 void render_text( const Standard_Integer id,
13a22457
S
30 const wchar_t* text,
31 const Standard_Boolean is2d = Standard_False );
7fd59977 32
33 //render text by last requested font
13a22457
S
34 void render_text( const wchar_t* text,
35 const Standard_Boolean is2d = Standard_False );
7fd59977 36
37 //returns direct access to FTGL font
38 //Warning: don't change font pointer.
39 const FTFont* fontById( const Standard_Integer id );
40
41 //returns width of string
13a22457 42 Standard_ShortReal computeWidth( const Standard_Integer id, const wchar_t *str );
7fd59977 43
44 bool requestFontList( Graphic3d_NListOfHAsciiString& );
45
46 void setCurrentScale( const Standard_ShortReal xScale = 1.f,
47 const Standard_ShortReal yScale = 1.f);
48
49private:
50 OpenGl_FontMgr();
51 OpenGl_FontMgr( const OpenGl_FontMgr& ){};
52 OpenGl_FontMgr& operator = ( const OpenGl_FontMgr&){ return *this;};
53 ~OpenGl_FontMgr(){};
54
55 void _initializeFontDB();
56
57 typedef NCollection_List<Standard_Integer> IDList;
58
59 struct OGLFont_SysInfo {
60 Handle(OSD_SystemFont) SysFont;
61 IDList GeneratedFonts;
62 };
63
64 struct OGLFont_Cache {
65 FTFont* Font;
66 Standard_Integer FontHeight;
67 GLCONTEXT GlContext;
68 };
69
70 typedef NCollection_List<OGLFont_SysInfo*> FontDataBase;
71 typedef FontDataBase::Iterator FontDBIt;
72 typedef NCollection_DataMap<Standard_Integer,OGLFont_Cache> FontCache;
73 typedef FontCache::Iterator FCacheIt;
74
75 FontDataBase _FontDB;
76 FontCache _FontCache;
77
78 Standard_Integer _CurrentFontId;
79
80 Standard_ShortReal _XCurrentScale,
81 _YCurrentScale;
82};
83
84#endif //OPENGL_FONT_MGR_H