| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: src/common/overlaycmn.cpp |
| 3 | // Purpose: common wxOverlay code |
| 4 | // Author: Stefan Csomor |
| 5 | // Modified by: |
| 6 | // Created: 2006-10-20 |
| 7 | // RCS-ID: $Id$ |
| 8 | // Copyright: (c) wxWidgets team |
| 9 | // Licence: wxWindows licence |
| 10 | ///////////////////////////////////////////////////////////////////////////// |
| 11 | |
| 12 | // ============================================================================ |
| 13 | // declarations |
| 14 | // ============================================================================ |
| 15 | |
| 16 | // ---------------------------------------------------------------------------- |
| 17 | // headers |
| 18 | // ---------------------------------------------------------------------------- |
| 19 | |
| 20 | // For compilers that support precompilation, includes "wx.h". |
| 21 | #include "wx/wxprec.h" |
| 22 | |
| 23 | #ifdef __BORLANDC__ |
| 24 | #pragma hdrstop |
| 25 | #endif |
| 26 | |
| 27 | #include "wx/overlay.h" |
| 28 | #include "wx/private/overlay.h" |
| 29 | #include "wx/dcclient.h" |
| 30 | #include "wx/dcmemory.h" |
| 31 | |
| 32 | // ============================================================================ |
| 33 | // implementation |
| 34 | // ============================================================================ |
| 35 | |
| 36 | // ---------------------------------------------------------------------------- |
| 37 | // wxOverlay |
| 38 | // ---------------------------------------------------------------------------- |
| 39 | |
| 40 | wxOverlay::wxOverlay() |
| 41 | { |
| 42 | m_impl = new wxOverlayImpl(); |
| 43 | m_inDrawing = false; |
| 44 | } |
| 45 | |
| 46 | wxOverlay::~wxOverlay() |
| 47 | { |
| 48 | delete m_impl; |
| 49 | } |
| 50 | |
| 51 | bool wxOverlay::IsOk() |
| 52 | { |
| 53 | return m_impl->IsOk(); |
| 54 | } |
| 55 | |
| 56 | void wxOverlay::Init( wxDC* dc, int x , int y , int width , int height ) |
| 57 | { |
| 58 | m_impl->Init(dc, x, y, width, height); |
| 59 | } |
| 60 | |
| 61 | void wxOverlay::BeginDrawing( wxDC* dc) |
| 62 | { |
| 63 | m_impl->BeginDrawing(dc); |
| 64 | m_inDrawing = true ; |
| 65 | } |
| 66 | |
| 67 | void wxOverlay::EndDrawing( wxDC* dc) |
| 68 | { |
| 69 | m_impl->EndDrawing(dc); |
| 70 | m_inDrawing = false ; |
| 71 | } |
| 72 | |
| 73 | void wxOverlay::Clear( wxDC* dc) |
| 74 | { |
| 75 | m_impl->Clear(dc); |
| 76 | } |
| 77 | |
| 78 | void wxOverlay::Reset() |
| 79 | { |
| 80 | wxASSERT_MSG(m_inDrawing==false,wxT("cannot reset overlay during drawing")); |
| 81 | m_impl->Reset(); |
| 82 | } |
| 83 | |
| 84 | |
| 85 | // ---------------------------------------------------------------------------- |
| 86 | // wxDCOverlay |
| 87 | // ---------------------------------------------------------------------------- |
| 88 | |
| 89 | wxDCOverlay::wxDCOverlay(wxOverlay &overlay, wxDC *dc, int x , int y , int width , int height) : |
| 90 | m_overlay(overlay) |
| 91 | { |
| 92 | Init(dc, x, y, width, height); |
| 93 | } |
| 94 | |
| 95 | wxDCOverlay::wxDCOverlay(wxOverlay &overlay, wxDC *dc) : |
| 96 | m_overlay(overlay) |
| 97 | { |
| 98 | int width; |
| 99 | int height; |
| 100 | dc->GetSize(&width,&height); |
| 101 | Init(dc, 0, 0, width, height); |
| 102 | } |
| 103 | |
| 104 | wxDCOverlay::~wxDCOverlay() |
| 105 | { |
| 106 | m_overlay.EndDrawing(m_dc); |
| 107 | } |
| 108 | |
| 109 | void wxDCOverlay::Init(wxDC *dc, int x , int y , int width , int height ) |
| 110 | { |
| 111 | m_dc = dc ; |
| 112 | if ( !m_overlay.IsOk() ) |
| 113 | { |
| 114 | m_overlay.Init(dc,x,y,width,height); |
| 115 | } |
| 116 | m_overlay.BeginDrawing(dc); |
| 117 | } |
| 118 | |
| 119 | void wxDCOverlay::Clear() |
| 120 | { |
| 121 | m_overlay.Clear(m_dc); |
| 122 | } |
| 123 | |
| 124 | // ---------------------------------------------------------------------------- |
| 125 | // generic implementation of wxOverlayImpl |
| 126 | // ---------------------------------------------------------------------------- |
| 127 | |
| 128 | #ifndef wxHAS_NATIVE_OVERLAY |
| 129 | |
| 130 | wxOverlayImpl::wxOverlayImpl() |
| 131 | { |
| 132 | m_window = NULL ; |
| 133 | m_x = m_y = m_width = m_height = 0 ; |
| 134 | } |
| 135 | |
| 136 | wxOverlayImpl::~wxOverlayImpl() |
| 137 | { |
| 138 | } |
| 139 | |
| 140 | bool wxOverlayImpl::IsOk() |
| 141 | { |
| 142 | return m_bmpSaved.Ok() ; |
| 143 | } |
| 144 | |
| 145 | void wxOverlayImpl::Init( wxDC* dc, int x , int y , int width , int height ) |
| 146 | { |
| 147 | m_window = dc->GetWindow(); |
| 148 | wxMemoryDC dcMem ; |
| 149 | m_bmpSaved.Create( width, height ); |
| 150 | dcMem.SelectObject( m_bmpSaved ); |
| 151 | m_x = x ; |
| 152 | m_y = y ; |
| 153 | m_width = width ; |
| 154 | m_height = height ; |
| 155 | #if defined(__WXGTK__) && !defined(__WX_DC_BLIT_FIXED__) |
| 156 | wxPoint pt = dc->GetDeviceOrigin(); |
| 157 | x += pt.x; |
| 158 | y += pt.y; |
| 159 | #endif // broken wxGTK wxDC::Blit |
| 160 | dcMem.Blit(0, 0, m_width, m_height, |
| 161 | dc, x, y); |
| 162 | dcMem.SelectObject( wxNullBitmap ); |
| 163 | } |
| 164 | |
| 165 | void wxOverlayImpl::Clear(wxDC* dc) |
| 166 | { |
| 167 | wxMemoryDC dcMem ; |
| 168 | dcMem.SelectObject( m_bmpSaved ); |
| 169 | dc->Blit( m_x, m_y, m_width, m_height , &dcMem , 0 , 0 ); |
| 170 | dcMem.SelectObject( wxNullBitmap ); |
| 171 | } |
| 172 | |
| 173 | void wxOverlayImpl::Reset() |
| 174 | { |
| 175 | m_bmpSaved = wxBitmap(); |
| 176 | } |
| 177 | |
| 178 | void wxOverlayImpl::BeginDrawing(wxDC* WXUNUSED(dc)) |
| 179 | { |
| 180 | } |
| 181 | |
| 182 | void wxOverlayImpl::EndDrawing(wxDC* WXUNUSED(dc)) |
| 183 | { |
| 184 | } |
| 185 | |
| 186 | #endif // !wxHAS_NATIVE_OVERLAY |
| 187 | |
| 188 | |