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 IMPLEMENT_DYNAMIC_CLASS(wxSplashScreen, wxFrame);
  38
  39 BEGIN_EVENT_TABLE(wxSplashScreen, wxFrame)
  40     EVT_TIMER(wxSPLASH_TIMER_ID, wxSplashScreen::OnNotify)
  41     EVT_CLOSE(wxSplashScreen::OnCloseWindow)
  42 END_EVENT_TABLE()
  43
  44 /* Note that unless we pass a non-default size to the frame, SetClientSize
  45  * won't work properly under Windows, and the splash screen frame is sized
  46  * slightly too small.
  47  */
  48
  49 wxSplashScreen::wxSplashScreen(const wxBitmap& bitmap, long splashStyle, int milliseconds, wxWindow* parent, wxWindowID id, const wxPoint& pos, const wxSize& size, long style):
  50     wxFrame(parent, id, wxEmptyString, wxPoint(0, 0), wxSize(100, 100), style)
  51 {
  52     m_window = NULL;
  53     m_splashStyle = splashStyle;
  54     m_milliseconds = milliseconds;
  55
  56     m_window = new wxSplashScreenWindow(bitmap, this, -1, pos, size, wxNO_BORDER);
  57
  58     SetClientSize(bitmap.GetWidth(), bitmap.GetHeight());
  59
  60     if (m_splashStyle & wxSPLASH_CENTRE_ON_PARENT)
  61         CentreOnParent();
  62     else if (m_splashStyle & wxSPLASH_CENTRE_ON_SCREEN)
  63         CentreOnScreen();
  64
  65     if (m_splashStyle & wxSPLASH_TIMEOUT)
  66     {
  67         m_timer.SetOwner(this, wxSPLASH_TIMER_ID);
  68         m_timer.Start(milliseconds, TRUE);
  69     }
  70
  71     Show(TRUE);
  72     m_window->SetFocus();
  73 #ifdef __WXMSW__
  74     Update(); // Without this, you see a blank screen for an instant
  75 #else
  76     wxYieldIfNeeded(); // Should eliminate this
  77 #endif
  78 }
  79
  80 wxSplashScreen::~wxSplashScreen()
  81 {
  82     m_timer.Stop();
  83 }
  84
  85 void wxSplashScreen::OnNotify(wxTimerEvent& WXUNUSED(event))
  86 {
  87     Close(TRUE);
  88 }
  89
  90 void wxSplashScreen::OnCloseWindow(wxCloseEvent& WXUNUSED(event))
  91 {
  92     m_timer.Stop();
  93     this->Destroy();
  94 }
  95
  96 /*
  97  * wxSplashScreenWindow
  98  */
  99
 100 BEGIN_EVENT_TABLE(wxSplashScreenWindow, wxWindow)
 101     //EVT_PAINT(wxSplashScreenWindow::OnPaint)
 102     EVT_ERASE_BACKGROUND(wxSplashScreenWindow::OnEraseBackground)
 103     EVT_CHAR(wxSplashScreenWindow::OnChar)
 104     EVT_MOUSE_EVENTS(wxSplashScreenWindow::OnMouseEvent)
 105 END_EVENT_TABLE()
 106
 107 wxSplashScreenWindow::wxSplashScreenWindow(const wxBitmap& bitmap, wxWindow* parent, wxWindowID id, const wxPoint& pos, const wxSize& size, long style):
 108     wxWindow(parent, id, pos, size, style)
 109 {
 110     m_bitmap = bitmap;
 111 }
 112
 113 void wxSplashScreenWindow::OnPaint(wxPaintEvent& WXUNUSED(event))
 114 {
 115     wxPaintDC dc(this);
 116     if (m_bitmap.Ok())
 117         dc.DrawBitmap(m_bitmap, 0, 0);
 118 }
 119
 120 // VZ: why don't we do it under wxGTK?
 121 #if !defined(__WXGTK__) && wxUSE_PALETTE
 122     #define USE_PALETTE_IN_SPLASH
 123 #endif
 124
 125 static void wxDrawSplashBitmap(wxDC& dc, const wxBitmap& bitmap, int WXUNUSED(x), int WXUNUSED(y))
 126 {
 127     wxMemoryDC dcMem;
 128
 129 #ifdef USE_PALETTE_IN_SPLASH
 130     bool hiColour = (wxDisplayDepth() >= 16) ;
 131
 132     if (bitmap.GetPalette() && !hiColour)
 133     {
 134         dc.SetPalette(* bitmap.GetPalette());
 135         dcMem.SetPalette(* bitmap.GetPalette());
 136     }
 137 #endif // USE_PALETTE_IN_SPLASH
 138
 139     dcMem.SelectObject(bitmap);
 140     dc.Blit(0, 0, bitmap.GetWidth(), bitmap.GetHeight(), & dcMem, 0, 0);
 141     dcMem.SelectObject(wxNullBitmap);
 142
 143 #ifdef USE_PALETTE_IN_SPLASH
 144     if (bitmap.GetPalette() && !hiColour)
 145     {
 146         dc.SetPalette(wxNullPalette);
 147         dcMem.SetPalette(wxNullPalette);
 148     }
 149 #endif // USE_PALETTE_IN_SPLASH
 150 }
 151
 152 void wxSplashScreenWindow::OnEraseBackground(wxEraseEvent& event)
 153 {
 154     if (event.GetDC())
 155     {
 156         if (m_bitmap.Ok())
 157         {
 158             wxDrawSplashBitmap(* event.GetDC(), m_bitmap, 0, 0);
 159         }
 160     }
 161     else
 162     {
 163         wxClientDC dc(this);
 164         if (m_bitmap.Ok())
 165         {
 166             wxDrawSplashBitmap(dc, m_bitmap, 0, 0);
 167         }
 168     }
 169 }
 170
 171 void wxSplashScreenWindow::OnMouseEvent(wxMouseEvent& event)
 172 {
 173     if (event.LeftDown() || event.RightDown())
 174         GetParent()->Close(TRUE);
 175 }
 176
 177 void wxSplashScreenWindow::OnChar(wxKeyEvent& WXUNUSED(event))
 178 {
 179     GetParent()->Close(TRUE);
 180 }
 181
 182 #endif // wxUSE_SPLASH