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 #include "wx/dcclient.h"
  28 #endif
  29
  30 #include "wx/splash.h"
  31
  32 /*
  33  * wxSplashScreen
  34  */
  35
  36 #define wxSPLASH_TIMER_ID 9999
  37
  38 IMPLEMENT_DYNAMIC_CLASS(wxSplashScreen, wxFrame);
  39
  40 BEGIN_EVENT_TABLE(wxSplashScreen, wxFrame)
  41     EVT_TIMER(wxSPLASH_TIMER_ID, wxSplashScreen::OnNotify)
  42     EVT_CLOSE(wxSplashScreen::OnCloseWindow)
  43 END_EVENT_TABLE()
  44
  45 /* Note that unless we pass a non-default size to the frame, SetClientSize
  46  * won't work properly under Windows, and the splash screen frame is sized
  47  * slightly too small.
  48  */
  49
  50 wxSplashScreen::wxSplashScreen(const wxBitmap& bitmap, long splashStyle, int milliseconds, wxWindow* parent, wxWindowID id, const wxPoint& pos, const wxSize& size, long style):
  51     wxFrame(parent, id, wxEmptyString, wxPoint(0, 0), wxSize(100, 100), style)
  52 {
  53     m_window = NULL;
  54     m_splashStyle = splashStyle;
  55     m_milliseconds = milliseconds;
  56
  57     m_window = new wxSplashScreenWindow(bitmap, this, -1, pos, size, wxNO_BORDER);
  58
  59     SetClientSize(bitmap.GetWidth(), bitmap.GetHeight());
  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 #if defined( __WXMSW__ ) || defined(__WXMAC__)
  75     Update(); // Without this, you see a blank screen for an instant
  76 #else
  77     wxYieldIfNeeded(); // Should eliminate this
  78 #endif
  79 }
  80
  81 wxSplashScreen::~wxSplashScreen()
  82 {
  83     m_timer.Stop();
  84 }
  85
  86 void wxSplashScreen::OnNotify(wxTimerEvent& WXUNUSED(event))
  87 {
  88     Close(TRUE);
  89 }
  90
  91 void wxSplashScreen::OnCloseWindow(wxCloseEvent& WXUNUSED(event))
  92 {
  93     m_timer.Stop();
  94     this->Destroy();
  95 }
  96
  97 /*
  98  * wxSplashScreenWindow
  99  */
 100
 101 BEGIN_EVENT_TABLE(wxSplashScreenWindow, wxWindow)
 102 #ifdef __WXGTK__
 103     EVT_PAINT(wxSplashScreenWindow::OnPaint)
 104 #endif
 105     EVT_ERASE_BACKGROUND(wxSplashScreenWindow::OnEraseBackground)
 106     EVT_CHAR(wxSplashScreenWindow::OnChar)
 107     EVT_MOUSE_EVENTS(wxSplashScreenWindow::OnMouseEvent)
 108 END_EVENT_TABLE()
 109
 110 wxSplashScreenWindow::wxSplashScreenWindow(const wxBitmap& bitmap, wxWindow* parent, wxWindowID id, const wxPoint& pos, const wxSize& size, long style):
 111     wxWindow(parent, id, pos, size, style)
 112 {
 113     m_bitmap = bitmap;
 114
 115 #if !defined(__WXGTK__) && wxUSE_PALETTE
 116     bool hiColour = (wxDisplayDepth() >= 16) ;
 117
 118     if (bitmap.GetPalette() && !hiColour)
 119     {
 120         SetPalette(* bitmap.GetPalette());
 121     }
 122 #endif
 123
 124 }
 125
 126 // VZ: why don't we do it under wxGTK?
 127 #if !defined(__WXGTK__) && wxUSE_PALETTE
 128     #define USE_PALETTE_IN_SPLASH
 129 #endif
 130
 131 static void wxDrawSplashBitmap(wxDC& dc, const wxBitmap& bitmap, int WXUNUSED(x), int WXUNUSED(y))
 132 {
 133     wxMemoryDC dcMem;
 134
 135 #ifdef USE_PALETTE_IN_SPLASH
 136     bool hiColour = (wxDisplayDepth() >= 16) ;
 137
 138     if (bitmap.GetPalette() && !hiColour)
 139     {
 140         dcMem.SetPalette(* bitmap.GetPalette());
 141     }
 142 #endif // USE_PALETTE_IN_SPLASH
 143
 144     dcMem.SelectObject(bitmap);
 145     dc.Blit(0, 0, bitmap.GetWidth(), bitmap.GetHeight(), & dcMem, 0, 0);
 146     dcMem.SelectObject(wxNullBitmap);
 147
 148 #ifdef USE_PALETTE_IN_SPLASH
 149     if (bitmap.GetPalette() && !hiColour)
 150     {
 151         dcMem.SetPalette(wxNullPalette);
 152     }
 153 #endif // USE_PALETTE_IN_SPLASH
 154 }
 155
 156 void wxSplashScreenWindow::OnPaint(wxPaintEvent& WXUNUSED(event))
 157 {
 158     wxPaintDC dc(this);
 159     if (m_bitmap.Ok())
 160         wxDrawSplashBitmap(dc, m_bitmap, 0, 0);
 161 }
 162
 163 void wxSplashScreenWindow::OnEraseBackground(wxEraseEvent& event)
 164 {
 165     if (event.GetDC())
 166     {
 167         if (m_bitmap.Ok())
 168         {
 169             wxDrawSplashBitmap(* event.GetDC(), m_bitmap, 0, 0);
 170         }
 171     }
 172     else
 173     {
 174         wxClientDC dc(this);
 175         if (m_bitmap.Ok())
 176         {
 177             wxDrawSplashBitmap(dc, m_bitmap, 0, 0);
 178         }
 179     }
 180 }
 181
 182 void wxSplashScreenWindow::OnMouseEvent(wxMouseEvent& event)
 183 {
 184     if (event.LeftDown() || event.RightDown())
 185         GetParent()->Close(TRUE);
 186 }
 187
 188 void wxSplashScreenWindow::OnChar(wxKeyEvent& WXUNUSED(event))
 189 {
 190     GetParent()->Close(TRUE);
 191 }
 192
 193 #endif // wxUSE_SPLASH