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1 | // File: OpenGl_Window.hxx |
2 | // Created: 20 September 2011 | |
3 | // Author: Sergey ZERCHANINOV | |
4 | // Copyright: OPEN CASCADE 2011 | |
5 | ||
6 | #ifndef _OpenGl_Window_Header | |
7 | #define _OpenGl_Window_Header | |
8 | ||
9 | #include <Handle_OpenGl_Window.hxx> | |
10 | #include <MMgt_TShared.hxx> | |
11 | ||
12 | #include <InterfaceGraphic.hxx> | |
13 | #include <InterfaceGraphic_Aspect.hxx> | |
14 | #include <InterfaceGraphic_telem.hxx> | |
15 | ||
16 | #include <Handle_OpenGl_Display.hxx> | |
17 | #include <Handle_OpenGl_Context.hxx> | |
18 | ||
19 | //! This class represents low-level wrapper over window with GL context. | |
20 | //! The window itself should be provided to constructor. | |
21 | class OpenGl_Window : public MMgt_TShared | |
22 | { | |
23 | public: | |
24 | ||
25 | //! Main constructor - prepare GL context for specified window. | |
26 | OpenGl_Window (const Handle(OpenGl_Display)& theDisplay, | |
27 | const CALL_DEF_WINDOW& theCWindow, | |
28 | Aspect_RenderingContext theGContext); | |
29 | ||
30 | //! Destructor | |
31 | virtual ~OpenGl_Window(); | |
32 | ||
33 | //! Resizes the window. | |
34 | void Resize (const CALL_DEF_WINDOW& theCWindow); | |
35 | ||
36 | //! Reads depth component for current scene into specified buffer. | |
37 | void ReadDepths (const Standard_Integer theX, const Standard_Integer theY, | |
38 | const Standard_Integer theWidth, const Standard_Integer theHeight, | |
39 | float* theDepths); | |
40 | ||
41 | void SetBackgroundColor (const Standard_ShortReal theR, | |
42 | const Standard_ShortReal theG, | |
43 | const Standard_ShortReal theB); | |
44 | ||
45 | void EnablePolygonOffset() const; | |
46 | void DisablePolygonOffset() const; | |
47 | ||
48 | Standard_Integer Width() const { return myWidth; } | |
49 | Standard_Integer Height() const { return myHeight; } | |
50 | const TEL_COLOUR& BackgroundColor() const { return myBgColor; } | |
51 | Standard_Boolean Dither() const { return myDither; } | |
52 | Standard_Boolean BackDither() const { return myBackDither; } | |
53 | ||
54 | const Handle(OpenGl_Display)& GetDisplay() const { return myDisplay; } | |
55 | ||
56 | const Handle(OpenGl_Context)& GetGlContext() const { return myGlContext; } | |
57 | ||
58 | WINDOW GetWindow() const { return myWindow; } | |
59 | GLCONTEXT GetGContext() const { return myGContext; } | |
60 | ||
61 | protected: | |
62 | ||
63 | //! Activates GL context and setup viewport. | |
64 | void Init(); | |
65 | ||
66 | //! Makes GL context for this window active in current thread | |
67 | virtual Standard_Boolean Activate(); | |
68 | ||
69 | void EnableFeatures() const; | |
70 | void DisableFeatures() const; | |
71 | ||
72 | //! Draw directly to the FRONT buffer. Can cause artifacts on the screen. | |
73 | void MakeFrontBufCurrent() const; | |
74 | ||
75 | //! Draw to BACK buffer. Normal and default state. | |
76 | void MakeBackBufCurrent() const; | |
77 | ||
78 | //! Draw simultaneously to BACK and FRONT buffers. Abnormal usage. | |
79 | void MakeFrontAndBackBufCurrent() const; | |
80 | ||
81 | protected: | |
82 | ||
83 | Handle(OpenGl_Display) myDisplay; | |
84 | WINDOW myWindow; //!< native window handle, system-specific | |
85 | Handle(OpenGl_Context) myGlContext; | |
86 | GLCONTEXT myGContext; //!< native GL context bound to this window, system-specific | |
87 | Standard_Boolean myOwnGContext; //!< set to TRUE if GL context was not created by this class | |
88 | #if (defined(_WIN32) || defined(__WIN32__)) | |
89 | HDC myWindowDC; | |
90 | BOOL mySysPalInUse; | |
91 | #endif | |
92 | ||
93 | Standard_Integer myWidth; // WSWidth | |
94 | Standard_Integer myHeight; // WSHeight | |
95 | TEL_COLOUR myBgColor; // WSBackground | |
96 | Standard_Boolean myDither; | |
97 | Standard_Boolean myBackDither; | |
98 | ||
99 | public: | |
100 | ||
101 | DEFINE_STANDARD_RTTI(OpenGl_Window) // Type definition | |
1c35b92f | 102 | DEFINE_STANDARD_ALLOC |
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103 | |
104 | }; | |
105 | ||
106 | #endif //_OpenGl_Window_Header |