projects / wxWidgets.git / blame
| Commit | Line | Data |
|---|---|---|
| f0244295 VZ |
1 | /////////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: common/rendcmn.cpp | |
| 3 | // Purpose: wxRendererNative common functions | |
| 4 | // Author: Vadim Zeitlin | |
| 5 | // Modified by: | |
| 6 | // Created: 28.07.03 | |
| 7 | // RCS-ID: $Id$ | |
| 8 | // Copyright: (c) 2003 Vadim Zeitlin <vadim@wxwindows.org> | |
| 9 | // License: wxWindows license | |
| 10 | /////////////////////////////////////////////////////////////////////////////// | |
| 11 | ||
| 12 | // ============================================================================ | |
| 13 | // declarations | |
| 14 | // ============================================================================ | |
| 15 | ||
| 16 | // ---------------------------------------------------------------------------- | |
| 17 | // headers | |
| 18 | // ---------------------------------------------------------------------------- | |
| 19 | ||
| 20 | #include "wx/wxprec.h" | |
| 21 | ||
| 22 | #ifdef __BORLANDC__ | |
| 23 | #pragma hdrstop | |
| 24 | #endif | |
| 25 | ||
| 26 | #ifndef WX_PRECOMP | |
| 3d3a4a25 | 27 | #include "wx/app.h" |
| f0244295 VZ |
28 | #endif //WX_PRECOMP |
| 29 | ||
| 30 | #include "wx/apptrait.h" | |
| 31 | #include "wx/renderer.h" | |
| 32 | ||
| 33 | #include "wx/ptr_scpd.h" | |
| 34 | ||
| 35 | // ---------------------------------------------------------------------------- | |
| 36 | // wxRendererPtr: auto pointer holding the global renderer | |
| 37 | // ---------------------------------------------------------------------------- | |
| 38 | ||
| 39 | wxDECLARE_SCOPED_PTR(wxRendererNative, wxRendererPtrBase); | |
| 40 | wxDEFINE_SCOPED_PTR(wxRendererNative, wxRendererPtrBase); | |
| 41 | ||
| 42 | class wxRendererPtr : public wxRendererPtrBase | |
| 43 | { | |
| 44 | public: | |
| 45 | wxRendererPtr() : wxRendererPtrBase(NULL) { m_initialized = false; } | |
| 46 | ||
| 47 | // return true if we have a renderer, false otherwise | |
| 48 | bool IsOk() | |
| 49 | { | |
| 50 | if ( !m_initialized ) | |
| 51 | { | |
| 52 | // only try to create the renderer once | |
| 53 | m_initialized = true; | |
| 54 | ||
| 55 | DoInit(); | |
| 56 | } | |
| 57 | ||
| 58 | return get() != NULL; | |
| 59 | } | |
| 60 | ||
| 61 | private: | |
| 62 | void DoInit() | |
| 63 | { | |
| 64 | wxAppTraits *traits = wxTheApp ? wxTheApp->GetTraits() : NULL; | |
| 65 | if ( traits ) | |
| 66 | { | |
| 67 | // ask the traits object to create a renderer for us | |
| 68 | reset(traits->CreateRenderer()); | |
| 69 | } | |
| 70 | } | |
| 71 | ||
| 72 | bool m_initialized; | |
| 73 | ||
| 74 | DECLARE_NO_COPY_CLASS(wxRendererPtr) | |
| 75 | }; | |
| 76 | ||
| 77 | // ============================================================================ | |
| 78 | // wxRendererNative implementation | |
| 79 | // ============================================================================ | |
| 80 | ||
| 81 | /* static */ | |
| 82 | wxRendererNative& wxRendererNative::Get() | |
| 83 | { | |
| 84 | static wxRendererPtr s_renderer; | |
| 85 | ||
| 86 | return s_renderer.IsOk() ? *s_renderer.get() : GetDefault(); | |
| 87 | } | |
| 88 |