projects / wxWidgets.git / blame
| Commit | Line | Data |
|---|---|---|
| 30c841c8 VS |
1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: src/dfb/overlay.cpp | |
| 3 | // Purpose: wxOverlay implementation for wxDFB | |
| 4 | // Author: Vaclav Slavik | |
| 5 | // Created: 2006-10-20 | |
| 6 | // RCS-ID: $Id$ | |
| 7 | // Copyright: (c) wxWidgets team | |
| 8 | // Licence: wxWindows licence | |
| 9 | ///////////////////////////////////////////////////////////////////////////// | |
| 10 | ||
| 11 | // ============================================================================ | |
| 12 | // declarations | |
| 13 | // ============================================================================ | |
| 14 | ||
| 15 | // ---------------------------------------------------------------------------- | |
| 16 | // headers | |
| 17 | // ---------------------------------------------------------------------------- | |
| 18 | ||
| 19 | // For compilers that support precompilation, includes "wx.h". | |
| 20 | #include "wx/wxprec.h" | |
| 21 | ||
| 22 | #ifdef __BORLANDC__ | |
| 23 | #pragma hdrstop | |
| 24 | #endif | |
| 25 | ||
| 26 | #include "wx/private/overlay.h" | |
| 27 | #include "wx/dfb/private.h" | |
| 28 | ||
| 29 | // ============================================================================ | |
| 30 | // implementation | |
| 31 | // ============================================================================ | |
| 32 | ||
| 33 | // ---------------------------------------------------------------------------- | |
| 34 | // wxOverlay | |
| 35 | // ---------------------------------------------------------------------------- | |
| 36 | ||
| 37 | wxOverlayImpl::wxOverlayImpl() | |
| 38 | { | |
| 39 | m_window = NULL; | |
| 40 | m_isEmpty = true; | |
| 41 | } | |
| 42 | ||
| 43 | wxOverlayImpl::~wxOverlayImpl() | |
| 44 | { | |
| 45 | Reset(); | |
| 46 | } | |
| 47 | ||
| 48 | bool wxOverlayImpl::IsOk() | |
| 49 | { | |
| 50 | return m_window != NULL; | |
| 51 | } | |
| 52 | ||
| 53 | void wxOverlayImpl::Init(wxWindowDC *dc, int x, int y, int width, int height) | |
| 54 | { | |
| 55 | wxASSERT_MSG( !IsOk() , _("You cannot Init an overlay twice") ); | |
| 56 | ||
| 57 | m_window = dc->GetWindow(); | |
| 58 | ||
| 59 | m_rect = wxRect(x, y, width, height); | |
| 60 | m_rect.Offset(m_window->GetClientAreaOrigin()); | |
| 61 | ||
| 62 | // FIXME: create surface with transparency or key color (?) | |
| 63 | m_surface = | |
| 64 | dc->GetDirectFBSurface()->CreateCompatible | |
| 65 | ( | |
| 66 | m_rect.GetSize(), | |
| 67 | wxIDirectFBSurface::CreateCompatible_NoBackBuffer | |
| 68 | ); | |
| 69 | ||
| 70 | m_window->AddOverlay(this); | |
| 71 | } | |
| 72 | ||
| 73 | void wxOverlayImpl::BeginDrawing(wxWindowDC *dc) | |
| 74 | { | |
| 75 | wxPoint origin(m_rect.GetPosition() - m_window->GetClientAreaOrigin()); | |
| 76 | ||
| 77 | // drawing on overlay "hijacks" existing wxWindowDC rather then using | |
| 78 | // another DC, so we have to change the DC to draw on the overlay's surface. | |
| 79 | // Setting m_shouldFlip is done to avoid flipping and drawing of overlays | |
| 80 | // in ~wxWindowDC (we do it EndDrawing). | |
| 81 | dc->Init(m_surface); | |
| 82 | dc->SetDeviceOrigin(-origin.x, -origin.y); | |
| 83 | dc->m_shouldFlip = false; | |
| 84 | ||
| 85 | m_isEmpty = false; | |
| 86 | } | |
| 87 | ||
| 88 | void wxOverlayImpl::EndDrawing(wxWindowDC *dc) | |
| 89 | { | |
| 90 | m_window->RefreshWindowRect(m_rect); | |
| 91 | } | |
| 92 | ||
| 93 | void wxOverlayImpl::Clear(wxWindowDC *dc) | |
| 94 | { | |
| 95 | wxASSERT_MSG( IsOk(), | |
| 96 | _T("You cannot Clear an overlay that is not initialized") ); | |
| 97 | ||
| 98 | m_isEmpty = true; | |
| 99 | } | |
| 100 | ||
| 101 | void wxOverlayImpl::Reset() | |
| 102 | { | |
| 103 | if ( m_window ) | |
| 104 | { | |
| 105 | m_window->RemoveOverlay(this); | |
| 106 | m_window = NULL; | |
| 107 | m_surface.Reset(); | |
| 108 | } | |
| 109 | } |