projects / occt.git / blame
| Commit | Line | Data |
|---|---|---|
| b311480e | 1 | // Created on: 2011-07-13 |
| 2 | // Created by: Sergey ZERCHANINOV | |
| a174a3c5 | 3 | // Copyright (c) 2011-2013 OPEN CASCADE SAS |
| b311480e | 4 | // |
| 973c2be1 | 5 | // This file is part of Open CASCADE Technology software library. |
| b311480e | 6 | // |
| d5f74e42 | 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 | |
| 973c2be1 | 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. | |
| b311480e | 12 | // |
| 973c2be1 | 13 | // Alternatively, this file may be used under the terms of Open CASCADE |
| 14 | // commercial license or contractual agreement. | |
| b311480e | 15 | |
| 2166f0fa SK |
16 | #ifndef OpenGl_Text_Header |
| 17 | #define OpenGl_Text_Header | |
| 18 | ||
| 19 | #include <OpenGl_Element.hxx> | |
| 20 | ||
| a174a3c5 | 21 | #include <OpenGl_AspectText.hxx> |
| 2166f0fa | 22 | #include <OpenGl_TextParam.hxx> |
| a174a3c5 | 23 | #include <OpenGl_TextFormatter.hxx> |
| 2166f0fa SK |
24 | |
| 25 | #include <TCollection_ExtendedString.hxx> | |
| 26 | #include <Graphic3d_Vertex.hxx> | |
| 27 | #include <Graphic3d_HorizontalTextAlignment.hxx> | |
| 28 | #include <Graphic3d_VerticalTextAlignment.hxx> | |
| 29 | ||
| a174a3c5 | 30 | class Handle(OpenGl_PrinterContext); |
| 31 | ||
| 32 | //! Text rendering | |
| 2166f0fa SK |
33 | class OpenGl_Text : public OpenGl_Element |
| 34 | { | |
| 5e27df78 | 35 | |
| 36 | public: | |
| 2166f0fa | 37 | |
| a174a3c5 | 38 | //! Main constructor |
| b64d84be | 39 | Standard_EXPORT OpenGl_Text (const Standard_Utf8Char* theText, |
| 40 | const OpenGl_Vec3& thePoint, | |
| 41 | const OpenGl_TextParam& theParams); | |
| a174a3c5 | 42 | |
| 43 | //! Setup new string and position | |
| 44 | Standard_EXPORT void Init (const Handle(OpenGl_Context)& theCtx, | |
| 45 | const Standard_Utf8Char* theText, | |
| 46 | const OpenGl_Vec3& thePoint); | |
| 47 | ||
| 48 | //! Setup new string and parameters | |
| 49 | Standard_EXPORT void Init (const Handle(OpenGl_Context)& theCtx, | |
| 50 | const Standard_Utf8Char* theText, | |
| 51 | const OpenGl_Vec3& thePoint, | |
| 52 | const OpenGl_TextParam& theParams); | |
| 53 | ||
| 54 | //! Setup new position | |
| 55 | Standard_EXPORT void SetPosition (const OpenGl_Vec3& thePoint); | |
| 56 | ||
| 57 | //! Setup new font size | |
| 58 | Standard_EXPORT void SetFontSize (const Handle(OpenGl_Context)& theContext, | |
| 59 | const Standard_Integer theFontSize); | |
| 60 | ||
| 61 | Standard_EXPORT virtual void Render (const Handle(OpenGl_Workspace)& theWorkspace) const; | |
| 62 | Standard_EXPORT virtual void Release (const Handle(OpenGl_Context)& theContext); | |
| 63 | ||
| 64 | public: //! @name methods for compatibility with layers | |
| 65 | ||
| 66 | //! Empty constructor | |
| 6a240ff8 | 67 | Standard_EXPORT OpenGl_Text(); |
| a174a3c5 | 68 | |
| 69 | //! Create key for shared resource | |
| 6a240ff8 | 70 | Standard_EXPORT static TCollection_AsciiString FontKey (const OpenGl_AspectText& theAspect, |
| 71 | const Standard_Integer theHeight); | |
| a174a3c5 | 72 | |
| 73 | //! Find shared resource for specified font or initialize new one | |
| 6a240ff8 | 74 | Standard_EXPORT static Handle(OpenGl_Font) FindFont (const Handle(OpenGl_Context)& theCtx, |
| 75 | const OpenGl_AspectText& theAspect, | |
| 76 | const Standard_Integer theHeight, | |
| 77 | const TCollection_AsciiString theKey); | |
| a174a3c5 | 78 | |
| 79 | //! Compute text width | |
| 6a240ff8 | 80 | Standard_EXPORT static void StringSize (const Handle(OpenGl_Context)& theCtx, |
| 81 | const NCollection_String& theText, | |
| 82 | const OpenGl_AspectText& theTextAspect, | |
| 83 | const OpenGl_TextParam& theParams, | |
| 84 | Standard_ShortReal& theWidth, | |
| 85 | Standard_ShortReal& theAscent, | |
| 86 | Standard_ShortReal& theDescent); | |
| a174a3c5 | 87 | |
| 88 | //! Setup new string and parameters | |
| 6a240ff8 | 89 | Standard_EXPORT void Init (const Handle(OpenGl_Context)& theCtx, |
| 90 | const TCollection_ExtendedString& theText, | |
| 91 | const OpenGl_Vec2& thePoint, | |
| 92 | const OpenGl_TextParam& theParams); | |
| a174a3c5 | 93 | |
| 94 | //! Perform rendering | |
| 6a240ff8 | 95 | Standard_EXPORT void Render (const Handle(OpenGl_PrinterContext)& thePrintCtx, |
| 96 | const Handle(OpenGl_Context)& theCtx, | |
| 97 | const OpenGl_AspectText& theTextAspect) const; | |
| a174a3c5 | 98 | |
| 99 | protected: | |
| 100 | ||
| 101 | //! Destructor | |
| 102 | Standard_EXPORT virtual ~OpenGl_Text(); | |
| 103 | ||
| 104 | friend class OpenGl_Trihedron; | |
| 105 | friend class OpenGl_GraduatedTrihedron; | |
| 106 | ||
| 107 | private: | |
| 108 | ||
| 109 | //! Release cached VBO resources | |
| 110 | void releaseVbos (const Handle(OpenGl_Context)& theCtx); | |
| 111 | ||
| 112 | //! Setup matrix. | |
| 113 | void setupMatrix (const Handle(OpenGl_PrinterContext)& thePrintCtx, | |
| 114 | const Handle(OpenGl_Context)& theCtx, | |
| 115 | const OpenGl_AspectText& theTextAspect, | |
| 116 | const OpenGl_Vec3 theDVec) const; | |
| 117 | ||
| 118 | //! Draw arrays of vertices. | |
| 119 | void drawText (const Handle(OpenGl_PrinterContext)& thePrintCtx, | |
| 120 | const Handle(OpenGl_Context)& theCtx, | |
| 121 | const OpenGl_AspectText& theTextAspect) const; | |
| 122 | ||
| 123 | //! Main rendering code | |
| 124 | void render (const Handle(OpenGl_PrinterContext)& thePrintCtx, | |
| 125 | const Handle(OpenGl_Context)& theCtx, | |
| 126 | const OpenGl_AspectText& theTextAspect, | |
| 127 | const TEL_COLOUR& theColorText, | |
| 128 | const TEL_COLOUR& theColorSubs) const; | |
| 129 | ||
| 130 | protected: | |
| 2166f0fa | 131 | |
| a174a3c5 | 132 | mutable Handle(OpenGl_Font) myFont; |
| 133 | mutable NCollection_Vector<GLuint> myTextures; //!< textures' IDs | |
| 134 | mutable NCollection_Vector<Handle(OpenGl_VertexBuffer)> myVertsVbo; //!< VBOs of vertices | |
| 135 | mutable NCollection_Vector<Handle(OpenGl_VertexBuffer)> myTCrdsVbo; //!< VBOs of texture coordinates | |
| 136 | mutable NCollection_Vector<Handle(OpenGl_Vec2Array)> myVertsArray; //!< arrays of vertices (for compatibility mode) | |
| 137 | mutable NCollection_Vector<Handle(OpenGl_Vec2Array)> myTCrdsArray; //!< arrays of vertices (for compatibility mode) | |
| 138 | mutable Font_FTFont::Rect myBndBox; | |
| 5e27df78 | 139 | |
| 140 | protected: | |
| 141 | ||
| a174a3c5 | 142 | mutable GLdouble myProjMatrix[16]; |
| 143 | mutable GLdouble myModelMatrix[16]; | |
| 144 | mutable GLint myViewport[4]; | |
| 145 | mutable GLdouble myWinX; | |
| 146 | mutable GLdouble myWinY; | |
| 147 | mutable GLdouble myWinZ; | |
| 148 | mutable GLdouble myScaleHeight; | |
| 149 | mutable GLdouble myExportHeight; | |
| 2166f0fa | 150 | |
| 5e27df78 | 151 | protected: |
| 2166f0fa | 152 | |
| a174a3c5 | 153 | OpenGl_TextParam myParams; |
| 154 | NCollection_String myString; | |
| 155 | OpenGl_Vec3 myPoint; | |
| 156 | bool myIs2d; | |
| 2166f0fa | 157 | |
| 5e27df78 | 158 | public: |
| 159 | ||
| 1c35b92f | 160 | DEFINE_STANDARD_ALLOC |
| 5e27df78 | 161 | |
| 2166f0fa SK |
162 | }; |
| 163 | ||
| 164 | #endif //OpenGl_Text_Header |