src/generic/splash.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/generic/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 // For compilers that support precompilation, includes "wx/wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #ifdef __BORLANDC__
  16     #pragma hdrstop
  17 #endif
  18
  19 #if wxUSE_SPLASH
  20
  21 #ifdef __WXGTK20__
  22     #include <gtk/gtk.h>
  23 #endif
  24
  25 #include "wx/splash.h"
  26
  27 #ifndef WX_PRECOMP
  28     #include "wx/dcmemory.h"
  29     #include "wx/dcclient.h"
  30 #endif
  31
  32
  33 // ----------------------------------------------------------------------------
  34 // wxSplashScreen
  35 // ----------------------------------------------------------------------------
  36
  37 #define wxSPLASH_TIMER_ID       9999
  38
  39 IMPLEMENT_DYNAMIC_CLASS(wxSplashScreen, wxFrame)
  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,
  51                                wxWindow* parent, wxWindowID id, const wxPoint& pos,
  52                                const wxSize& size, long style)
  53     : wxFrame(parent, id, wxEmptyString, wxPoint(0,0), wxSize(100, 100), style)
  54 {
  55     // At least for GTK+ 2.0, this hint is not available.
  56 #if defined(__WXGTK20__)
  57 #if GTK_CHECK_VERSION(2,2,0)
  58     gtk_window_set_type_hint(GTK_WINDOW(m_widget),
  59                              GDK_WINDOW_TYPE_HINT_SPLASHSCREEN);
  60 #endif
  61 #endif
  62
  63     m_window = NULL;
  64     m_splashStyle = splashStyle;
  65     m_milliseconds = milliseconds;
  66
  67     m_window = new wxSplashScreenWindow(bitmap, this, wxID_ANY, pos, size, wxNO_BORDER);
  68
  69     SetClientSize(bitmap.GetWidth(), bitmap.GetHeight());
  70
  71     if (m_splashStyle & wxSPLASH_CENTRE_ON_PARENT)
  72         CentreOnParent();
  73     else if (m_splashStyle & wxSPLASH_CENTRE_ON_SCREEN)
  74         CentreOnScreen();
  75
  76     if (m_splashStyle & wxSPLASH_TIMEOUT)
  77     {
  78         m_timer.SetOwner(this, wxSPLASH_TIMER_ID);
  79         m_timer.Start(milliseconds, true);
  80     }
  81
  82     Show(true);
  83     m_window->SetFocus();
  84 #if defined( __WXMSW__ ) || defined(__WXMAC__)
  85     Update(); // Without this, you see a blank screen for an instant
  86 #elif defined(__WXGTK20__)
  87     // we don't need to do anything at least on wxGTK with GTK+ 2.12.9
  88 #else
  89     wxYieldIfNeeded(); // Should eliminate this
  90 #endif
  91 }
  92
  93 wxSplashScreen::~wxSplashScreen()
  94 {
  95     m_timer.Stop();
  96 }
  97
  98 void wxSplashScreen::OnNotify(wxTimerEvent& WXUNUSED(event))
  99 {
 100     Close(true);
 101 }
 102
 103 void wxSplashScreen::OnCloseWindow(wxCloseEvent& WXUNUSED(event))
 104 {
 105     m_timer.Stop();
 106     this->Destroy();
 107 }
 108
 109 // ----------------------------------------------------------------------------
 110 // wxSplashScreenWindow
 111 // ----------------------------------------------------------------------------
 112
 113 BEGIN_EVENT_TABLE(wxSplashScreenWindow, wxWindow)
 114 #ifdef __WXGTK__
 115     EVT_PAINT(wxSplashScreenWindow::OnPaint)
 116 #endif
 117     EVT_ERASE_BACKGROUND(wxSplashScreenWindow::OnEraseBackground)
 118     EVT_CHAR(wxSplashScreenWindow::OnChar)
 119     EVT_MOUSE_EVENTS(wxSplashScreenWindow::OnMouseEvent)
 120 END_EVENT_TABLE()
 121
 122 wxSplashScreenWindow::wxSplashScreenWindow(const wxBitmap& bitmap, wxWindow* parent,
 123                                            wxWindowID id, const wxPoint& pos,
 124                                            const wxSize& size, long style)
 125     : wxWindow(parent, id, pos, size, style)
 126 {
 127     m_bitmap = bitmap;
 128
 129 #if !defined(__WXGTK__) && wxUSE_PALETTE
 130     bool hiColour = (wxDisplayDepth() >= 16) ;
 131
 132     if (bitmap.GetPalette() && !hiColour)
 133     {
 134         SetPalette(* bitmap.GetPalette());
 135     }
 136 #endif
 137 }
 138
 139 // VZ: why don't we do it under wxGTK?
 140 #if !defined(__WXGTK__) && wxUSE_PALETTE
 141     #define USE_PALETTE_IN_SPLASH
 142 #endif
 143
 144 static void wxDrawSplashBitmap(wxDC& dc, const wxBitmap& bitmap, int WXUNUSED(x), int WXUNUSED(y))
 145 {
 146     wxMemoryDC dcMem;
 147
 148 #ifdef USE_PALETTE_IN_SPLASH
 149     bool hiColour = (wxDisplayDepth() >= 16) ;
 150
 151     if (bitmap.GetPalette() && !hiColour)
 152     {
 153         dcMem.SetPalette(* bitmap.GetPalette());
 154     }
 155 #endif // USE_PALETTE_IN_SPLASH
 156
 157     dcMem.SelectObjectAsSource(bitmap);
 158     dc.Blit(0, 0, bitmap.GetWidth(), bitmap.GetHeight(), &dcMem, 0, 0, wxCOPY,
 159             true /* use mask */);
 160     dcMem.SelectObject(wxNullBitmap);
 161
 162 #ifdef USE_PALETTE_IN_SPLASH
 163     if (bitmap.GetPalette() && !hiColour)
 164     {
 165         dcMem.SetPalette(wxNullPalette);
 166     }
 167 #endif // USE_PALETTE_IN_SPLASH
 168 }
 169
 170 void wxSplashScreenWindow::OnPaint(wxPaintEvent& WXUNUSED(event))
 171 {
 172     wxPaintDC dc(this);
 173     if (m_bitmap.Ok())
 174         wxDrawSplashBitmap(dc, m_bitmap, 0, 0);
 175 }
 176
 177 void wxSplashScreenWindow::OnEraseBackground(wxEraseEvent& event)
 178 {
 179     if (event.GetDC() && m_bitmap.Ok())
 180     {
 181         wxDrawSplashBitmap(* event.GetDC(), m_bitmap, 0, 0);
 182     }
 183     else
 184     {
 185         wxClientDC dc(this);
 186         if (m_bitmap.Ok())
 187             wxDrawSplashBitmap(dc, m_bitmap, 0, 0);
 188     }
 189 }
 190
 191 void wxSplashScreenWindow::OnMouseEvent(wxMouseEvent& event)
 192 {
 193     if (event.LeftDown() || event.RightDown())
 194         GetParent()->Close(true);
 195     else
 196         event.Skip();
 197 }
 198
 199 void wxSplashScreenWindow::OnChar(wxKeyEvent& WXUNUSED(event))
 200 {
 201     GetParent()->Close(true);
 202 }
 203
 204 #endif // wxUSE_SPLASH