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 wxSplashScreen::wxSplashScreen(const wxBitmap& bitmap, long splashStyle, int milliseconds, wxWindow* parent, wxWindowID id, const wxPoint& pos, const wxSize& size, long style):
  43     wxFrame(parent, id, wxEmptyString, pos, size, style)
  44 {
  45     m_window = NULL;
  46     m_splashStyle = splashStyle;
  47     m_milliseconds = milliseconds;
  48
  49     m_window = new wxSplashScreenWindow(bitmap, this, -1, pos, size, wxNO_BORDER);
  50
  51     // For some reason, we need to make the client size a couple of pixels
  52     // bigger for all of the bitmap to show.
  53     // Or do we?
  54 #ifdef __WXMSW__
  55     int fudge = 0;
  56 #else
  57     int fudge = 0;
  58 #endif
  59     SetClientSize(bitmap.GetWidth()+fudge, bitmap.GetHeight()+fudge);
  60
  61     if (m_splashStyle & wxSPLASH_CENTRE_ON_PARENT)
  62         CentreOnParent();
  63     else if (m_splashStyle & wxSPLASH_CENTRE_ON_SCREEN)
  64         CentreOnScreen();
  65
  66     if (m_splashStyle & wxSPLASH_TIMEOUT)
  67     {
  68         m_timer.SetOwner(this, wxSPLASH_TIMER_ID);
  69         m_timer.Start(milliseconds, TRUE);
  70     }
  71
  72     Show(TRUE);
  73     m_window->SetFocus();
  74     wxYield(); // Without this, you see a blank screen for an instant
  75 }
  76
  77 wxSplashScreen::~wxSplashScreen()
  78 {
  79     m_timer.Stop();
  80 }
  81
  82 void wxSplashScreen::OnNotify(wxTimerEvent& WXUNUSED(event))
  83 {
  84     Close(TRUE);
  85 }
  86
  87 void wxSplashScreen::OnCloseWindow(wxCloseEvent& WXUNUSED(event))
  88 {
  89     m_timer.Stop();
  90     this->Destroy();
  91 }
  92
  93 /*
  94  * wxSplashScreenWindow
  95  */
  96
  97 BEGIN_EVENT_TABLE(wxSplashScreenWindow, wxWindow)
  98     //EVT_PAINT(wxSplashScreenWindow::OnPaint)
  99     EVT_ERASE_BACKGROUND(wxSplashScreenWindow::OnEraseBackground)
 100     EVT_CHAR(wxSplashScreenWindow::OnChar)
 101     EVT_MOUSE_EVENTS(wxSplashScreenWindow::OnMouseEvent)
 102 END_EVENT_TABLE()
 103
 104 wxSplashScreenWindow::wxSplashScreenWindow(const wxBitmap& bitmap, wxWindow* parent, wxWindowID id, const wxPoint& pos, const wxSize& size, long style):
 105     wxWindow(parent, id, pos, size, style)
 106 {
 107     m_bitmap = bitmap;
 108 }
 109
 110 void wxSplashScreenWindow::OnPaint(wxPaintEvent& WXUNUSED(event))
 111 {
 112     wxPaintDC dc(this);
 113     if (m_bitmap.Ok())
 114         dc.DrawBitmap(m_bitmap, 0, 0);
 115 }
 116
 117 static void wxDrawSplashBitmap(wxDC& dc, const wxBitmap& bitmap, int WXUNUSED(x), int WXUNUSED(y))
 118 {
 119     wxMemoryDC dcMem;
 120
 121 #ifndef __WXGTK__
 122     bool hiColour = (wxDisplayDepth() >= 16) ;
 123
 124     if (bitmap.GetPalette() && !hiColour)
 125     {
 126         dc.SetPalette(* bitmap.GetPalette());
 127         dcMem.SetPalette(* bitmap.GetPalette());
 128     }
 129 #endif
 130
 131     dcMem.SelectObject(bitmap);
 132     dc.Blit(0, 0, bitmap.GetWidth(), bitmap.GetHeight(), & dcMem, 0, 0);
 133     dcMem.SelectObject(wxNullBitmap);
 134
 135 #ifndef __WXGTK__
 136     if (bitmap.GetPalette() && !hiColour)
 137     {
 138         dc.SetPalette(wxNullPalette);
 139         dcMem.SetPalette(wxNullPalette);
 140     }
 141 #endif
 142 }
 143
 144 void wxSplashScreenWindow::OnEraseBackground(wxEraseEvent& event)
 145 {
 146     if (event.GetDC())
 147     {
 148         if (m_bitmap.Ok())
 149         {
 150             wxDrawSplashBitmap(* event.GetDC(), m_bitmap, 0, 0);
 151         }
 152     }
 153     else
 154     {
 155         wxClientDC dc(this);
 156         if (m_bitmap.Ok())
 157         {
 158             wxDrawSplashBitmap(dc, m_bitmap, 0, 0);
 159         }
 160     }
 161 }
 162
 163 void wxSplashScreenWindow::OnMouseEvent(wxMouseEvent& event)
 164 {
 165     if (event.LeftDown() || event.RightDown())
 166         GetParent()->Close(TRUE);
 167 }
 168
 169 void wxSplashScreenWindow::OnChar(wxKeyEvent& WXUNUSED(event))
 170 {
 171     GetParent()->Close(TRUE);
 172 }
 173
 174 #endif // wxUSE_SPLASH