src/common/dpycmn.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/dpycmn.cpp
   3 // Purpose:     wxDisplay and wxDisplayImplSingle implementation
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     01.03.03
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2003-2006 Vadim Zeitlin <vadim@wxwindows.org>
   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 #ifndef WX_PRECOMP
  28     #include "wx/gdicmn.h"
  29     #include "wx/window.h"
  30     #include "wx/module.h"
  31 #endif //WX_PRECOMP
  32
  33 #include "wx/display.h"
  34 #include "wx/display_impl.h"
  35
  36 #if wxUSE_DISPLAY
  37
  38 #include "wx/arrimpl.cpp"
  39 WX_DEFINE_OBJARRAY(wxArrayVideoModes)
  40
  41 const wxVideoMode wxDefaultVideoMode;
  42
  43 #endif // wxUSE_DISPLAY
  44
  45 // ----------------------------------------------------------------------------
  46 // globals
  47 // ----------------------------------------------------------------------------
  48
  49 // the factory object used by wxDisplay
  50 //
  51 // created on demand and destroyed by wxDisplayModule
  52 static wxDisplayFactory *gs_factory = NULL;
  53
  54 // ----------------------------------------------------------------------------
  55 // wxDisplayImplSingle: trivial implementation working for main display only
  56 // ----------------------------------------------------------------------------
  57
  58 class WXDLLEXPORT wxDisplayImplSingle : public wxDisplayImpl
  59 {
  60 public:
  61     wxDisplayImplSingle() : wxDisplayImpl(0) { }
  62
  63     virtual wxRect GetGeometry() const
  64     {
  65         wxRect r;
  66         wxDisplaySize(&r.width, &r.height);
  67         return r;
  68     }
  69
  70     virtual wxRect GetClientArea() const { return wxGetClientDisplayRect(); }
  71
  72     virtual wxString GetName() const { return wxString(); }
  73
  74 #if wxUSE_DISPLAY
  75     // no video modes support for us, provide just the stubs
  76
  77     virtual wxArrayVideoModes GetModes(const wxVideoMode& WXUNUSED(mode)) const
  78     {
  79         return wxArrayVideoModes();
  80     }
  81
  82     virtual wxVideoMode GetCurrentMode() const { return wxVideoMode(); }
  83
  84     virtual bool ChangeMode(const wxVideoMode& WXUNUSED(mode)) { return false; }
  85 #endif // wxUSE_DISPLAY
  86
  87
  88     wxDECLARE_NO_COPY_CLASS(wxDisplayImplSingle);
  89 };
  90
  91 // ----------------------------------------------------------------------------
  92 // wxDisplayModule is used to cleanup gs_factory
  93 // ----------------------------------------------------------------------------
  94
  95 class wxDisplayModule : public wxModule
  96 {
  97 public:
  98     virtual bool OnInit() { return true; }
  99     virtual void OnExit()
 100     {
 101         wxDELETE(gs_factory);
 102     }
 103
 104     DECLARE_DYNAMIC_CLASS(wxDisplayModule)
 105 };
 106
 107 IMPLEMENT_DYNAMIC_CLASS(wxDisplayModule, wxModule)
 108
 109 // ============================================================================
 110 // wxDisplay implementation
 111 // ============================================================================
 112
 113 // ----------------------------------------------------------------------------
 114 // ctor/dtor
 115 // ----------------------------------------------------------------------------
 116
 117 wxDisplay::wxDisplay(unsigned n)
 118 {
 119     wxASSERT_MSG( n < GetCount(),
 120                     wxT("An invalid index was passed to wxDisplay") );
 121
 122     m_impl = Factory().CreateDisplay(n);
 123 }
 124
 125 wxDisplay::~wxDisplay()
 126 {
 127     delete m_impl;
 128 }
 129
 130 // ----------------------------------------------------------------------------
 131 // static functions forwarded to wxDisplayFactory
 132 // ----------------------------------------------------------------------------
 133
 134 /* static */ unsigned wxDisplay::GetCount()
 135 {
 136     return Factory().GetCount();
 137 }
 138
 139 /* static */ int wxDisplay::GetFromPoint(const wxPoint& pt)
 140 {
 141     return Factory().GetFromPoint(pt);
 142 }
 143
 144 /* static */ int wxDisplay::GetFromWindow(const wxWindow *window)
 145 {
 146     wxCHECK_MSG( window, wxNOT_FOUND, wxT("invalid window") );
 147
 148     return Factory().GetFromWindow(window);
 149 }
 150
 151 // ----------------------------------------------------------------------------
 152 // functions forwarded to wxDisplayImpl
 153 // ----------------------------------------------------------------------------
 154
 155 wxRect wxDisplay::GetGeometry() const
 156 {
 157     wxCHECK_MSG( IsOk(), wxRect(), wxT("invalid wxDisplay object") );
 158
 159     return m_impl->GetGeometry();
 160 }
 161
 162 wxRect wxDisplay::GetClientArea() const
 163 {
 164     wxCHECK_MSG( IsOk(), wxRect(), wxT("invalid wxDisplay object") );
 165
 166     return m_impl->GetClientArea();
 167 }
 168
 169 wxString wxDisplay::GetName() const
 170 {
 171     wxCHECK_MSG( IsOk(), wxString(), wxT("invalid wxDisplay object") );
 172
 173     return m_impl->GetName();
 174 }
 175
 176 bool wxDisplay::IsPrimary() const
 177 {
 178     return m_impl && m_impl->GetIndex() == 0;
 179 }
 180
 181 #if wxUSE_DISPLAY
 182
 183 wxArrayVideoModes wxDisplay::GetModes(const wxVideoMode& mode) const
 184 {
 185     wxCHECK_MSG( IsOk(), wxArrayVideoModes(), wxT("invalid wxDisplay object") );
 186
 187     return m_impl->GetModes(mode);
 188 }
 189
 190 wxVideoMode wxDisplay::GetCurrentMode() const
 191 {
 192     wxCHECK_MSG( IsOk(), wxVideoMode(), wxT("invalid wxDisplay object") );
 193
 194     return m_impl->GetCurrentMode();
 195 }
 196
 197 bool wxDisplay::ChangeMode(const wxVideoMode& mode)
 198 {
 199     wxCHECK_MSG( IsOk(), false, wxT("invalid wxDisplay object") );
 200
 201     return m_impl->ChangeMode(mode);
 202 }
 203
 204 #endif // wxUSE_DISPLAY
 205
 206 // ----------------------------------------------------------------------------
 207 // static functions implementation
 208 // ----------------------------------------------------------------------------
 209
 210 // if wxUSE_DISPLAY == 1 this is implemented in port-specific code
 211 #if !wxUSE_DISPLAY
 212
 213 /* static */ wxDisplayFactory *wxDisplay::CreateFactory()
 214 {
 215     return new wxDisplayFactorySingle;
 216 }
 217
 218 #endif // !wxUSE_DISPLAY
 219
 220 /* static */ wxDisplayFactory& wxDisplay::Factory()
 221 {
 222     if ( !gs_factory )
 223     {
 224         gs_factory = CreateFactory();
 225     }
 226
 227     return *gs_factory;
 228 }
 229
 230 // ============================================================================
 231 // wxDisplayFactory implementation
 232 // ============================================================================
 233
 234 int wxDisplayFactory::GetFromWindow(const wxWindow *window)
 235 {
 236     // consider that the window belongs to the display containing its centre
 237     const wxRect r(window->GetScreenRect());
 238     return GetFromPoint(wxPoint(r.x + r.width/2, r.y + r.height/2));
 239 }
 240
 241 // ============================================================================
 242 // wxDisplayFactorySingle implementation
 243 // ============================================================================
 244
 245 /* static */
 246 wxDisplayImpl *wxDisplayFactorySingle::CreateDisplay(unsigned n)
 247 {
 248     // we recognize the main display only
 249     return n != 0 ? NULL : new wxDisplayImplSingle;
 250 }
 251
 252 int wxDisplayFactorySingle::GetFromPoint(const wxPoint& pt)
 253 {
 254     if ( pt.x >= 0 && pt.y >= 0 )
 255     {
 256         int w, h;
 257         wxDisplaySize(&w, &h);
 258
 259         if ( pt.x < w && pt.y < h )
 260             return 0;
 261     }
 262
 263     // the point is outside of the screen
 264     return wxNOT_FOUND;
 265 }