src/generic/splash.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        splash.cpp
   3 // Purpose:     wxSplashScreen class
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     28/6/2000
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "splash.h"
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx/wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #ifdef __BORLANDC__
  20 #pragma hdrstop
  21 #endif
  22
  23 #if wxUSE_SPLASH
  24
  25 #ifndef WX_PRECOMP
  26 #include "wx/dcmemory.h"
  27 #endif
  28
  29 #include "wx/splash.h"
  30
  31 /*
  32  * wxSplashScreen
  33  */
  34
  35 #define wxSPLASH_TIMER_ID 9999
  36
  37 BEGIN_EVENT_TABLE(wxSplashScreen, wxFrame)
  38     EVT_TIMER(wxSPLASH_TIMER_ID, wxSplashScreen::OnNotify)
  39     EVT_CLOSE(wxSplashScreen::OnCloseWindow)
  40 END_EVENT_TABLE()
  41
  42 /* Note that unless we pass a non-default size to the frame, SetClientSize
  43  * won't work properly under Windows, and the splash screen frame is sized
  44  * slightly too small.
  45  */
  46
  47 wxSplashScreen::wxSplashScreen(const wxBitmap& bitmap, long splashStyle, int milliseconds, wxWindow* parent, wxWindowID id, const wxPoint& pos, const wxSize& size, long style):
  48     wxFrame(parent, id, wxEmptyString, wxPoint(0, 0), wxSize(100, 100), style)
  49 {
  50     m_window = NULL;
  51     m_splashStyle = splashStyle;
  52     m_milliseconds = milliseconds;
  53
  54     m_window = new wxSplashScreenWindow(bitmap, this, -1, pos, size, wxNO_BORDER);
  55
  56     SetClientSize(bitmap.GetWidth(), bitmap.GetHeight());
  57
  58     if (m_splashStyle & wxSPLASH_CENTRE_ON_PARENT)
  59         CentreOnParent();
  60     else if (m_splashStyle & wxSPLASH_CENTRE_ON_SCREEN)
  61         CentreOnScreen();
  62
  63     if (m_splashStyle & wxSPLASH_TIMEOUT)
  64     {
  65         m_timer.SetOwner(this, wxSPLASH_TIMER_ID);
  66         m_timer.Start(milliseconds, TRUE);
  67     }
  68
  69     Show(TRUE);
  70     m_window->SetFocus();
  71 #ifdef __WXMSW__
  72     Update(); // Without this, you see a blank screen for an instant
  73 #else
  74     wxYieldIfNeeded(); // Should eliminate this
  75 #endif
  76 }
  77
  78 wxSplashScreen::~wxSplashScreen()
  79 {
  80     m_timer.Stop();
  81 }
  82
  83 void wxSplashScreen::OnNotify(wxTimerEvent& WXUNUSED(event))
  84 {
  85     Close(TRUE);
  86 }
  87
  88 void wxSplashScreen::OnCloseWindow(wxCloseEvent& WXUNUSED(event))
  89 {
  90     m_timer.Stop();
  91     this->Destroy();
  92 }
  93
  94 /*
  95  * wxSplashScreenWindow
  96  */
  97
  98 BEGIN_EVENT_TABLE(wxSplashScreenWindow, wxWindow)
  99     //EVT_PAINT(wxSplashScreenWindow::OnPaint)
 100     EVT_ERASE_BACKGROUND(wxSplashScreenWindow::OnEraseBackground)
 101     EVT_CHAR(wxSplashScreenWindow::OnChar)
 102     EVT_MOUSE_EVENTS(wxSplashScreenWindow::OnMouseEvent)
 103 END_EVENT_TABLE()
 104
 105 wxSplashScreenWindow::wxSplashScreenWindow(const wxBitmap& bitmap, wxWindow* parent, wxWindowID id, const wxPoint& pos, const wxSize& size, long style):
 106     wxWindow(parent, id, pos, size, style)
 107 {
 108     m_bitmap = bitmap;
 109 }
 110
 111 void wxSplashScreenWindow::OnPaint(wxPaintEvent& WXUNUSED(event))
 112 {
 113     wxPaintDC dc(this);
 114     if (m_bitmap.Ok())
 115         dc.DrawBitmap(m_bitmap, 0, 0);
 116 }
 117
 118 static void wxDrawSplashBitmap(wxDC& dc, const wxBitmap& bitmap, int WXUNUSED(x), int WXUNUSED(y))
 119 {
 120     wxMemoryDC dcMem;
 121
 122 #ifndef __WXGTK__
 123     bool hiColour = (wxDisplayDepth() >= 16) ;
 124
 125     if (bitmap.GetPalette() && !hiColour)
 126     {
 127         dc.SetPalette(* bitmap.GetPalette());
 128         dcMem.SetPalette(* bitmap.GetPalette());
 129     }
 130 #endif
 131
 132     dcMem.SelectObject(bitmap);
 133     dc.Blit(0, 0, bitmap.GetWidth(), bitmap.GetHeight(), & dcMem, 0, 0);
 134     dcMem.SelectObject(wxNullBitmap);
 135
 136 #ifndef __WXGTK__
 137     if (bitmap.GetPalette() && !hiColour)
 138     {
 139         dc.SetPalette(wxNullPalette);
 140         dcMem.SetPalette(wxNullPalette);
 141     }
 142 #endif
 143 }
 144
 145 void wxSplashScreenWindow::OnEraseBackground(wxEraseEvent& event)
 146 {
 147     if (event.GetDC())
 148     {
 149         if (m_bitmap.Ok())
 150         {
 151             wxDrawSplashBitmap(* event.GetDC(), m_bitmap, 0, 0);
 152         }
 153     }
 154     else
 155     {
 156         wxClientDC dc(this);
 157         if (m_bitmap.Ok())
 158         {
 159             wxDrawSplashBitmap(dc, m_bitmap, 0, 0);
 160         }
 161     }
 162 }
 163
 164 void wxSplashScreenWindow::OnMouseEvent(wxMouseEvent& event)
 165 {
 166     if (event.LeftDown() || event.RightDown())
 167         GetParent()->Close(TRUE);
 168 }
 169
 170 void wxSplashScreenWindow::OnChar(wxKeyEvent& WXUNUSED(event))
 171 {
 172     GetParent()->Close(TRUE);
 173 }
 174
 175 #endif // wxUSE_SPLASH