mingw compilation fix

[wxWidgets.git] / samples / image / image.cpp

diff --git a/samples/image/image.cpp b/samples/image/image.cpp
index 7b17838bd525c529a2afa16b04103564669444ed..71540921bce3b10538ca3d302d9ec3c99d88f24f 100644 (file)
--- a/samples/image/image.cpp
+++ b/samples/image/image.cpp
@@ -19,6 +19,14 @@
 #endif
 
 #include "wx/image.h"
 #endif
 
 #include "wx/image.h"

+#include "wx/file.h"
+#include "wx/mstream.h"
+#include "wx/wfstream.h"
+#include "wx/quantize.h"
+
+#include "smile.xbm"
+#include "smile.xpm"
+

 
 // derived classes
 
 
 // derived classes
 


@@ -36,10 +44,24 @@ public:
     void OnPaint( wxPaintEvent &event );
     void CreateAntiAliasedBitmap();
 
     void OnPaint( wxPaintEvent &event );
     void CreateAntiAliasedBitmap();
 

-    wxBitmap  *my_horse;
+    wxBitmap  *my_horse_png;
+    wxBitmap  *my_horse_jpeg;
+    wxBitmap  *my_horse_gif;
+    wxBitmap  *my_horse_bmp;
+    wxBitmap  *my_horse_pcx;
+    wxBitmap  *my_horse_pnm;
+    wxBitmap  *my_horse_tiff;
+    wxBitmap  *my_horse_xpm;
+
+    wxBitmap  *my_smile_xbm;

     wxBitmap  *my_square;
     wxBitmap  *my_anti;
 
     wxBitmap  *my_square;
     wxBitmap  *my_anti;
 

+protected:
+    wxBitmap m_bmpSmileXpm;
+    wxIcon   m_iconSmileXpm;
+
+private:

     DECLARE_DYNAMIC_CLASS(MyCanvas)
     DECLARE_EVENT_TABLE()
 };
     DECLARE_DYNAMIC_CLASS(MyCanvas)
     DECLARE_EVENT_TABLE()
 };


@@ -52,14 +74,131 @@ public:
     MyFrame();
 
     void OnAbout( wxCommandEvent &event );
     MyFrame();
 
     void OnAbout( wxCommandEvent &event );

+    void OnNewFrame( wxCommandEvent &event );

     void OnQuit( wxCommandEvent &event );
 
     MyCanvas         *m_canvas;
 
     void OnQuit( wxCommandEvent &event );
 
     MyCanvas         *m_canvas;
 

+private:

     DECLARE_DYNAMIC_CLASS(MyFrame)
     DECLARE_EVENT_TABLE()
 };
 
     DECLARE_DYNAMIC_CLASS(MyFrame)
     DECLARE_EVENT_TABLE()
 };
 

+class MyImageFrame : public wxFrame
+{
+public:
+    MyImageFrame(wxFrame *parent, const wxBitmap& bitmap)
+        : wxFrame(parent, -1, _T("Double click to save"),
+                  wxDefaultPosition, wxDefaultSize,
+                  wxCAPTION | wxSYSTEM_MENU),
+                  m_bitmap(bitmap)
+    {
+        SetClientSize(bitmap.GetWidth(), bitmap.GetHeight());
+    }
+
+    void OnPaint(wxPaintEvent& WXUNUSED(event))
+    {
+        wxPaintDC dc( this );
+        dc.DrawBitmap( m_bitmap, 0, 0 );
+    }
+
+    void OnSave(wxCommandEvent& WXUNUSED(event))
+    {
+        wxImage image(m_bitmap);
+
+        static const wxString bppchoices[8] =
+        {
+            "1 bpp color",
+            "1 bpp B&W",
+            "4 bpp color",
+            "8 bpp color",
+            "8 bpp greyscale",
+            "8 bpp red",
+            "8 bpp own palette",
+            "24 bpp"
+        };
+
+        static const int bppvalues[WXSIZEOF(bppchoices)] =
+        {
+            wxBMP_1BPP,
+            wxBMP_1BPP_BW,
+            wxBMP_4BPP,
+            wxBMP_8BPP,
+            wxBMP_8BPP_GREY,
+            wxBMP_8BPP_RED,
+            wxBMP_8BPP_PALETTE,
+            wxBMP_24BPP
+        };
+
+        int bppselection = wxGetSingleChoiceIndex("Set BMP BPP",
+                                                  "Set BMP BPP",
+                                                  WXSIZEOF(bppchoices),
+                                                  bppchoices,
+                                                  this);
+        if ( bppselection == -1 )
+        {
+            // cancelled
+            return;
+        }
+
+        image.SetOption(wxBMP_FORMAT, bppvalues[bppselection]);
+
+        wxString deffilename = bppchoices[bppselection];
+        deffilename.Replace(wxT(" "), wxT("_"));
+        deffilename += wxT(".bmp");
+        wxString savefilename = wxFileSelector( wxT("Save Image"),
+                                                wxT(""),
+                                                deffilename,
+                                                (const wxChar *)NULL,
+                                            wxT("BMP files (*.bmp)|*.bmp|")
+                                            wxT("PNG files (*.png)|*.png|")
+                                            wxT("JPEG files (*.jpg)|*.jpg|")
+                                            wxT("GIF files (*.gif)|*.gif|")
+                                            wxT("TIFF files (*.tif)|*.tif|")
+                                            wxT("PCX files (*.pcx)|*.pcx"),
+                                                wxSAVE);
+
+        if ( savefilename.empty() )
+            return;
+
+        if ( image.GetOptionInt(wxBMP_FORMAT) == wxBMP_8BPP_PALETTE )
+        {
+            unsigned char *cmap = new unsigned char [256];
+            for ( int i = 0; i < 256; i++ )
+                cmap[i] = i;
+            image.SetPalette(wxPalette(256, cmap, cmap, cmap));
+
+            delete cmap;
+        }
+
+        bool saved = FALSE;
+
+        wxString extension = savefilename.AfterLast('.').Lower();
+
+        if (extension == "bmp")
+            saved=image.SaveFile(savefilename, wxBITMAP_TYPE_BMP);
+        else if (extension == "png")
+            saved=image.SaveFile(savefilename, wxBITMAP_TYPE_PNG);
+        else if (extension == "pcx")
+            saved=image.SaveFile(savefilename, wxBITMAP_TYPE_PCX);
+        else if ((extension == "tif") || (extension == "tiff"))
+            saved=image.SaveFile(savefilename, wxBITMAP_TYPE_TIF);
+        else if (extension == "jpg")
+            saved=image.SaveFile(savefilename, wxBITMAP_TYPE_JPEG);
+        else if (extension == "pnm")
+            saved=image.SaveFile(savefilename, wxBITMAP_TYPE_PNM);
+        else
+            wxMessageBox("Unknown file type, see options in file selector.",
+                         "Unknown file type",
+                         wxOK|wxCENTRE, this);
+    }
+
+private:
+    wxBitmap m_bitmap;
+
+    DECLARE_EVENT_TABLE()
+};
+

 // MyApp
 
 class MyApp: public wxApp
 // MyApp
 
 class MyApp: public wxApp


@@ -76,6 +215,11 @@ IMPLEMENT_APP(MyApp)
 
 IMPLEMENT_DYNAMIC_CLASS(MyCanvas, wxScrolledWindow)
 
 
 IMPLEMENT_DYNAMIC_CLASS(MyCanvas, wxScrolledWindow)
 

+BEGIN_EVENT_TABLE(MyImageFrame, wxFrame)
+  EVT_PAINT(MyImageFrame::OnPaint)
+  EVT_LEFT_DCLICK(MyImageFrame::OnSave)
+END_EVENT_TABLE()
+

 BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
   EVT_PAINT(MyCanvas::OnPaint)
 END_EVENT_TABLE()
 BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
   EVT_PAINT(MyCanvas::OnPaint)
 END_EVENT_TABLE()


@@ -83,63 +227,281 @@ END_EVENT_TABLE()
 MyCanvas::MyCanvas( wxWindow *parent, wxWindowID id,
                     const wxPoint &pos, const wxSize &size )
         : wxScrolledWindow( parent, id, pos, size, wxSUNKEN_BORDER )
 MyCanvas::MyCanvas( wxWindow *parent, wxWindowID id,
                     const wxPoint &pos, const wxSize &size )
         : wxScrolledWindow( parent, id, pos, size, wxSUNKEN_BORDER )

+#if !defined(__WINDOWS__) || wxUSE_XPM_IN_MSW
+          , m_bmpSmileXpm((const char **) smile_xpm)
+          , m_iconSmileXpm((const char **) smile_xpm)
+#endif

 {
 {

-  my_horse = (wxBitmap*) NULL;
-  my_square = (wxBitmap*) NULL;
-  my_anti = (wxBitmap*) NULL;
+    my_horse_png = (wxBitmap*) NULL;
+    my_horse_jpeg = (wxBitmap*) NULL;
+    my_horse_gif = (wxBitmap*) NULL;
+    my_horse_bmp = (wxBitmap*) NULL;
+    my_horse_pcx = (wxBitmap*) NULL;
+    my_horse_pnm = (wxBitmap*) NULL;
+    my_horse_tiff = (wxBitmap*) NULL;
+    my_horse_xpm = (wxBitmap*) NULL;
+    my_smile_xbm = (wxBitmap*) NULL;
+    my_square = (wxBitmap*) NULL;
+    my_anti = (wxBitmap*) NULL;
+
+    SetBackgroundColour(* wxWHITE);
+
+    wxBitmap bitmap( 100, 100 );
+
+    wxMemoryDC dc;
+    dc.SelectObject( bitmap );
+    dc.SetBrush( wxBrush( "orange", wxSOLID ) );
+    dc.SetPen( *wxBLACK_PEN );
+    dc.DrawRectangle( 0, 0, 100, 100 );
+    dc.SetBrush( *wxWHITE_BRUSH );
+    dc.DrawRectangle( 20, 20, 60, 60 );
+    dc.SelectObject( wxNullBitmap );
+
+    // try to find the directory with our images
+    wxString dir;
+    if ( wxFile::Exists(wxT("./horse.png")) )
+        dir = "./";
+    else if ( wxFile::Exists(wxT("../horse.png")) )
+        dir = "../";
+    else
+        wxLogWarning(wxT("Can't find image files in either '.' or '..'!"));
+
+    wxImage image = bitmap.ConvertToImage();
+
+#if wxUSE_LIBPNG
+    if ( !image.SaveFile( dir + wxString("test.png"), wxBITMAP_TYPE_PNG ))
+        wxLogError(wxT("Can't save file"));
+
+    image.Destroy();
+
+    image.LoadFile( dir + wxString("test.png") );
+    my_square = new wxBitmap( image );
+
+    image.Destroy();
+
+    if ( !image.LoadFile( dir + wxString("horse.png")) )
+        wxLogError(wxT("Can't load PNG image"));
+    else
+        my_horse_png = new wxBitmap( image );
+#endif // wxUSE_LIBPNG
+
+#if wxUSE_LIBJPEG
+    image.Destroy();
+
+    if ( !image.LoadFile( dir + wxString("horse.jpg")) )
+        wxLogError(wxT("Can't load JPG image"));
+    else
+        my_horse_jpeg = new wxBitmap( image );
+#endif // wxUSE_LIBJPEG
+
+#if wxUSE_GIF
+    image.Destroy();
+
+    if ( !image.LoadFile( dir + wxString("horse.gif")) )
+        wxLogError(wxT("Can't load GIF image"));
+    else
+        my_horse_gif = new wxBitmap( image );
+#endif

 
 

-  SetBackgroundColour(* wxWHITE);
+#if wxUSE_PCX
+    image.Destroy();

 
 

-  wxBitmap bitmap( 100, 100 );
+    if ( !image.LoadFile( dir + wxString("horse.pcx"), wxBITMAP_TYPE_PCX ) )
+        wxLogError(wxT("Can't load PCX image"));
+    else
+        my_horse_pcx = new wxBitmap( image );
+#endif

 
 

-  wxMemoryDC dc;
-  dc.SelectObject( bitmap );
-  dc.SetBrush( wxBrush( "orange", wxSOLID ) );
-  dc.SetPen( *wxWHITE_PEN );
-  dc.DrawRectangle( 0, 0, 100, 100 );
-  dc.SelectObject( wxNullBitmap );
+    image.Destroy();
+
+    if ( !image.LoadFile( dir + wxString("horse.bmp"), wxBITMAP_TYPE_BMP ) )
+        wxLogError(wxT("Can't load BMP image"));
+    else
+        my_horse_bmp = new wxBitmap( image );
+
+#if wxUSE_XPM
+    image.Destroy();
+
+    if ( !image.LoadFile( dir + wxString("horse.xpm"), wxBITMAP_TYPE_XPM ) )
+        wxLogError(wxT("Can't load XPM image"));
+    else
+        my_horse_xpm = new wxBitmap( image );
+
+    if ( !image.SaveFile( dir + wxString("test.xpm"), wxBITMAP_TYPE_XPM ))
+        wxLogError(wxT("Can't save file"));
+#endif
+
+#if wxUSE_PNM
+    image.Destroy();
+
+    if ( !image.LoadFile( dir + wxString("horse.pnm"), wxBITMAP_TYPE_PNM ) )
+        wxLogError(wxT("Can't load PNM image"));
+    else
+        my_horse_pnm = new wxBitmap( image );
+#endif

 
 

-  wxString dir("");
+#if wxUSE_LIBTIFF
+    image.Destroy();

 
 

-#ifdef __WXGTK__
-  dir = wxString("../");
+    if ( !image.LoadFile( dir + wxString("horse.tif"), wxBITMAP_TYPE_TIF ) )
+        wxLogError(wxT("Can't load TIFF image"));
+    else
+        my_horse_tiff = new wxBitmap( image );

 #endif
 
 #endif
 

-  wxImage image( bitmap );
-  image.SaveFile( dir + wxString("test.png"), wxBITMAP_TYPE_PNG );
-  
-  image.LoadFile( dir + wxString("horse.png"), wxBITMAP_TYPE_PNG );
-  my_horse = new wxBitmap( image.ConvertToBitmap() );
-  
-  image.LoadFile( dir + wxString("test.png"), wxBITMAP_TYPE_PNG );
-  my_square = new wxBitmap( image.ConvertToBitmap() );
+    CreateAntiAliasedBitmap();
+
+    my_smile_xbm = new wxBitmap( (const char*)smile_bits, smile_width,
+                                 smile_height, 1 );

 
 

-  CreateAntiAliasedBitmap();
+#if !defined(__WINDOWS__) || wxUSE_XPM_IN_MSW
+    // demonstrates XPM automatically using the mask when saving
+    if ( m_bmpSmileXpm.Ok() )
+        m_bmpSmileXpm.SaveFile("saved.xpm", wxBITMAP_TYPE_XPM);
+#endif

 }
 
 MyCanvas::~MyCanvas()
 {
 }
 
 MyCanvas::~MyCanvas()
 {

-  delete my_horse;
-  delete my_square;
-  delete my_anti;
+    delete my_horse_pnm;
+    delete my_horse_png;
+    delete my_horse_jpeg;
+    delete my_horse_gif;
+    delete my_horse_bmp;
+    delete my_horse_pcx;
+    delete my_horse_tiff;
+    delete my_horse_xpm;
+    delete my_smile_xbm;
+    delete my_square;
+    delete my_anti;

 }
 
 void MyCanvas::OnPaint( wxPaintEvent &WXUNUSED(event) )
 {
 }
 
 void MyCanvas::OnPaint( wxPaintEvent &WXUNUSED(event) )
 {

-  wxPaintDC dc( this );
-  PrepareDC( dc );
+    wxPaintDC dc( this );
+    PrepareDC( dc );
+
+    dc.DrawText( "Loaded image", 30, 10 );
+    if (my_square && my_square->Ok()) dc.DrawBitmap( *my_square, 30, 30 );
+
+    dc.DrawText( "Drawn directly", 150, 10 );
+    dc.SetBrush( wxBrush( "orange", wxSOLID ) );
+    dc.SetPen( *wxBLACK_PEN );
+    dc.DrawRectangle( 150, 30, 100, 100 );
+    dc.SetBrush( *wxWHITE_BRUSH );
+    dc.DrawRectangle( 170, 50, 60, 60 );
+
+    if (my_anti && my_anti->Ok())
+        dc.DrawBitmap( *my_anti, 280, 30 );
+
+    dc.DrawText( "PNG handler", 30, 135 );
+    if (my_horse_png && my_horse_png->Ok())
+    {
+        dc.DrawBitmap( *my_horse_png, 30, 150 );
+        wxRect rect(0,0,100,100);
+        wxBitmap sub( my_horse_png->GetSubBitmap(rect) );
+        dc.DrawText( "GetSubBitmap()", 280, 190 );
+        dc.DrawBitmap( sub, 280, 210 );
+    }
+
+    dc.DrawText( "JPEG handler", 30, 365 );
+    if (my_horse_jpeg && my_horse_jpeg->Ok())
+        dc.DrawBitmap( *my_horse_jpeg, 30, 380 );
+
+    dc.DrawText( "GIF handler", 30, 595 );
+    if (my_horse_gif && my_horse_gif->Ok())
+        dc.DrawBitmap( *my_horse_gif, 30, 610 );

 
 

-  dc.DrawText( "Loaded image", 30, 10 );
-  if (my_square && my_square->Ok()) dc.DrawBitmap( *my_square, 30, 30 );
+    dc.DrawText( "PCX handler", 30, 825 );
+    if (my_horse_pcx && my_horse_pcx->Ok())
+        dc.DrawBitmap( *my_horse_pcx, 30, 840 );

 
 

-  dc.DrawText( "Drawn directly", 150, 10 );
-  dc.SetBrush( wxBrush( "orange", wxSOLID ) );
-  dc.SetPen( *wxWHITE_PEN );
-  dc.DrawRectangle( 150, 30, 100, 100 );
+    dc.DrawText( "BMP handler", 30, 1055 );
+    if (my_horse_bmp && my_horse_bmp->Ok())
+        dc.DrawBitmap( *my_horse_bmp, 30, 1070 );

 
 

-  if (my_anti && my_anti->Ok()) dc.DrawBitmap( *my_anti, 250, 140 );
-  
-  if (my_horse && my_horse->Ok()) dc.DrawBitmap( *my_horse, 30, 140 );
+    dc.DrawText( "PNM handler", 30, 1285 );
+    if (my_horse_pnm && my_horse_pnm->Ok())
+        dc.DrawBitmap( *my_horse_pnm, 30, 1300 );
+
+    dc.DrawText( "TIFF handler", 30, 1515 );
+    if (my_horse_tiff && my_horse_tiff->Ok())
+        dc.DrawBitmap( *my_horse_tiff, 30, 1530 );
+
+    dc.DrawText( "XPM handler", 30, 1745 );
+    if (my_horse_xpm && my_horse_xpm->Ok())
+        dc.DrawBitmap( *my_horse_xpm, 30, 1760 );
+
+    if (my_smile_xbm && my_smile_xbm->Ok())
+    {
+        dc.DrawText( "XBM bitmap", 30, 1975 );
+        dc.DrawText( "(green on red)", 30, 1990 );
+        dc.SetTextForeground( "GREEN" );
+        dc.SetTextBackground( "RED" );
+        dc.DrawBitmap( *my_smile_xbm, 30, 2010 );
+
+        dc.SetTextForeground( "BLACK" );
+        dc.DrawText( "After wxImage conversion", 150, 1975 );
+        dc.DrawText( "(red on white)", 150, 1990 );
+        dc.SetTextForeground( "RED" );
+        wxImage i = my_smile_xbm->ConvertToImage();
+        i.SetMaskColour( 255, 255, 255 );
+        i.Replace( 0, 0, 0,
+               wxRED_PEN->GetColour().Red(),
+               wxRED_PEN->GetColour().Green(),
+               wxRED_PEN->GetColour().Blue() );
+        dc.DrawBitmap( i.ConvertToBitmap(), 150, 2010, TRUE );
+        dc.SetTextForeground( "BLACK" );
+    }
+
+
+    wxBitmap mono( 60,50,1 );
+    wxMemoryDC memdc;
+    memdc.SelectObject( mono );
+    memdc.SetPen( *wxBLACK_PEN );
+    memdc.SetBrush( *wxWHITE_BRUSH );
+    memdc.DrawRectangle( 0,0,60,50 );
+    memdc.SetTextForeground( *wxBLACK );
+    memdc.DrawText( "Hi!", 5, 5 );
+    memdc.SetBrush( *wxBLACK_BRUSH );
+    memdc.DrawRectangle( 33,5,20,20 );
+    memdc.SetPen( *wxRED_PEN );
+    memdc.DrawLine( 5, 42, 50, 42 );
+    memdc.SelectObject( wxNullBitmap );
+
+    if (mono.Ok())
+    {
+        dc.DrawText( "Mono bitmap", 30, 2095 );
+        dc.DrawText( "(red on green)", 30, 2110 );
+        dc.SetTextForeground( "RED" );
+        dc.SetTextBackground( "GREEN" );
+        dc.DrawBitmap( mono, 30, 2130 );
+
+        dc.SetTextForeground( "BLACK" );
+        dc.DrawText( "After wxImage conversion", 150, 2095 );
+        dc.DrawText( "(red on white)", 150, 2110 );
+        dc.SetTextForeground( "RED" );
+        wxImage i = mono.ConvertToImage();
+        i.SetMaskColour( 255,255,255 );
+        i.Replace( 0,0,0,
+               wxRED_PEN->GetColour().Red(),
+               wxRED_PEN->GetColour().Green(),
+               wxRED_PEN->GetColour().Blue() );
+        dc.DrawBitmap( i.ConvertToBitmap(), 150, 2130, TRUE );
+        dc.SetTextForeground( "BLACK" );
+    }
+
+    dc.DrawText("XPM bitmap", 30, 2230);
+    if ( m_bmpSmileXpm.Ok() )
+    {
+        dc.DrawBitmap(m_bmpSmileXpm, 30, 2250, TRUE);
+    }
+
+    dc.DrawText("XPM icon", 150, 2230);
+    if ( m_iconSmileXpm.Ok() )
+    {
+        dc.DrawIcon(m_iconSmileXpm, 150, 2250);
+    }

 }
 
 void MyCanvas::CreateAntiAliasedBitmap()
 }
 
 void MyCanvas::CreateAntiAliasedBitmap()


@@ -151,40 +513,41 @@ void MyCanvas::CreateAntiAliasedBitmap()
   dc.SelectObject( bitmap );
 
   dc.Clear();
   dc.SelectObject( bitmap );
 
   dc.Clear();

-  
-  dc.SetFont( wxFont( 24, wxDECORATIVE, wxDEFAULT, wxDEFAULT ) );
+
+  dc.SetFont( wxFont( 24, wxDECORATIVE, wxNORMAL, wxNORMAL) );

   dc.SetTextForeground( "RED" );
   dc.DrawText( "This is anti-aliased Text.", 20, 20 );
   dc.DrawText( "And a Rectangle.", 20, 60 );
   dc.SetTextForeground( "RED" );
   dc.DrawText( "This is anti-aliased Text.", 20, 20 );
   dc.DrawText( "And a Rectangle.", 20, 60 );

-  
+

   dc.SetBrush( *wxRED_BRUSH );
   dc.SetBrush( *wxRED_BRUSH );

+  dc.SetPen( *wxTRANSPARENT_PEN );

   dc.DrawRoundedRectangle( 20, 100, 200, 180, 20 );
   dc.DrawRoundedRectangle( 20, 100, 200, 180, 20 );

-  
-  wxImage original( bitmap );
+
+  wxImage original= bitmap.ConvertToImage();

   wxImage anti( 150, 150 );
 
   /* This is quite slow, but safe. Use wxImage::GetData() for speed instead. */
   wxImage anti( 150, 150 );
 
   /* This is quite slow, but safe. Use wxImage::GetData() for speed instead. */

-  
+

   for (int y = 1; y < 149; y++)
     for (int x = 1; x < 149; x++)
     {
        int red = original.GetRed( x*2, y*2 ) +
   for (int y = 1; y < 149; y++)
     for (int x = 1; x < 149; x++)
     {
        int red = original.GetRed( x*2, y*2 ) +

-                 original.GetRed( x*2-1, y*2 ) + 
-                 original.GetRed( x*2, y*2+1 ) + 
+                 original.GetRed( x*2-1, y*2 ) +
+                 original.GetRed( x*2, y*2+1 ) +

                  original.GetRed( x*2+1, y*2+1 );
                  original.GetRed( x*2+1, y*2+1 );

-       red = red/4; 
-       
+       red = red/4;
+

        int green = original.GetGreen( x*2, y*2 ) +
        int green = original.GetGreen( x*2, y*2 ) +

-                   original.GetGreen( x*2-1, y*2 ) + 
-                   original.GetGreen( x*2, y*2+1 ) + 
+                   original.GetGreen( x*2-1, y*2 ) +
+                   original.GetGreen( x*2, y*2+1 ) +

                    original.GetGreen( x*2+1, y*2+1 );
                    original.GetGreen( x*2+1, y*2+1 );

-       green = green/4; 
-       
+       green = green/4;
+

        int blue = original.GetBlue( x*2, y*2 ) +
        int blue = original.GetBlue( x*2, y*2 ) +

-                  original.GetBlue( x*2-1, y*2 ) + 
-                  original.GetBlue( x*2, y*2+1 ) + 
+                  original.GetBlue( x*2-1, y*2 ) +
+                  original.GetBlue( x*2, y*2+1 ) +

                   original.GetBlue( x*2+1, y*2+1 );
                   original.GetBlue( x*2+1, y*2+1 );

-       blue = blue/4; 
+       blue = blue/4;

        anti.SetRGB( x, y, red, green, blue );
     }
   my_anti = new wxBitmap( anti.ConvertToBitmap() );
        anti.SetRGB( x, y, red, green, blue );
     }
   my_anti = new wxBitmap( anti.ConvertToBitmap() );


@@ -194,12 +557,14 @@ void MyCanvas::CreateAntiAliasedBitmap()
 
 const int ID_QUIT  = 108;
 const int ID_ABOUT = 109;
 
 const int ID_QUIT  = 108;
 const int ID_ABOUT = 109;

+const int ID_NEW = 110;

 
 IMPLEMENT_DYNAMIC_CLASS( MyFrame, wxFrame )
 
 BEGIN_EVENT_TABLE(MyFrame,wxFrame)
   EVT_MENU    (ID_ABOUT, MyFrame::OnAbout)
   EVT_MENU    (ID_QUIT,  MyFrame::OnQuit)
 
 IMPLEMENT_DYNAMIC_CLASS( MyFrame, wxFrame )
 
 BEGIN_EVENT_TABLE(MyFrame,wxFrame)
   EVT_MENU    (ID_ABOUT, MyFrame::OnAbout)
   EVT_MENU    (ID_QUIT,  MyFrame::OnQuit)

+  EVT_MENU    (ID_NEW,  MyFrame::OnNewFrame)

 END_EVENT_TABLE()
 
 MyFrame::MyFrame()
 END_EVENT_TABLE()
 
 MyFrame::MyFrame()


@@ -207,11 +572,14 @@ MyFrame::MyFrame()
                   wxPoint(20,20), wxSize(470,360) )
 {
   wxMenu *file_menu = new wxMenu();
                   wxPoint(20,20), wxSize(470,360) )
 {
   wxMenu *file_menu = new wxMenu();

-  file_menu->Append( ID_ABOUT, "About..");
-  file_menu->Append( ID_QUIT, "Exit");
+  file_menu->Append( ID_NEW, "&Show image...");
+  file_menu->AppendSeparator();
+  file_menu->Append( ID_ABOUT, "&About...");
+  file_menu->AppendSeparator();
+  file_menu->Append( ID_QUIT, "E&xit");

 
   wxMenuBar *menu_bar = new wxMenuBar();
 
   wxMenuBar *menu_bar = new wxMenuBar();

-  menu_bar->Append(file_menu, "File");
+  menu_bar->Append(file_menu, "&File");

 
   SetMenuBar( menu_bar );
 
 
   SetMenuBar( menu_bar );
 


@@ -220,7 +588,9 @@ MyFrame::MyFrame()
   SetStatusWidths( 2, widths );
 
   m_canvas = new MyCanvas( this, -1, wxPoint(0,0), wxSize(10,10) );
   SetStatusWidths( 2, widths );
 
   m_canvas = new MyCanvas( this, -1, wxPoint(0,0), wxSize(10,10) );

-  m_canvas->SetScrollbars( 10, 10, 50, 50 );
+
+  // 500 width * 2100 height
+  m_canvas->SetScrollbars( 10, 10, 50, 220 );

 }
 
 void MyFrame::OnQuit( wxCommandEvent &WXUNUSED(event) )
 }
 
 void MyFrame::OnQuit( wxCommandEvent &WXUNUSED(event) )


@@ -231,16 +601,61 @@ void MyFrame::OnQuit( wxCommandEvent &WXUNUSED(event) )
 void MyFrame::OnAbout( wxCommandEvent &WXUNUSED(event) )
 {
   (void)wxMessageBox( "wxImage demo\n"
 void MyFrame::OnAbout( wxCommandEvent &WXUNUSED(event) )
 {
   (void)wxMessageBox( "wxImage demo\n"

-                      "Robert Roebling (c) 1998",
+                      "Robert Roebling (c) 1998,2000",

                       "About wxImage Demo", wxICON_INFORMATION | wxOK );
 }
 
                       "About wxImage Demo", wxICON_INFORMATION | wxOK );
 }
 

+void MyFrame::OnNewFrame( wxCommandEvent &WXUNUSED(event) )
+{
+    wxString filename = wxFileSelector(_T("Select image file"));
+    if ( !filename )
+        return;
+
+    wxImage image;
+    if ( !image.LoadFile(filename) )
+    {
+        wxLogError(_T("Couldn't load image from '%s'."), filename.c_str());
+
+        return;
+    }
+
+    (new MyImageFrame(this, image.ConvertToBitmap()))->Show();
+}
+

 //-----------------------------------------------------------------------------
 // MyApp
 //-----------------------------------------------------------------------------
 
 bool MyApp::OnInit()
 {
 //-----------------------------------------------------------------------------
 // MyApp
 //-----------------------------------------------------------------------------
 
 bool MyApp::OnInit()
 {

+#if wxUSE_LIBPNG
+  wxImage::AddHandler( new wxPNGHandler );
+#endif
+
+#if wxUSE_LIBJPEG
+  wxImage::AddHandler( new wxJPEGHandler );
+#endif
+
+#if wxUSE_LIBTIFF
+  wxImage::AddHandler( new wxTIFFHandler );
+#endif
+
+#if wxUSE_GIF
+  wxImage::AddHandler( new wxGIFHandler );
+#endif
+
+#if wxUSE_PCX
+  wxImage::AddHandler( new wxPCXHandler );
+#endif
+
+#if wxUSE_PNM
+  wxImage::AddHandler( new wxPNMHandler );
+#endif
+
+#if wxUSE_XPM
+  wxImage::AddHandler( new wxXPMHandler );
+#endif
+

   wxFrame *frame = new MyFrame();
   frame->Show( TRUE );
 
   wxFrame *frame = new MyFrame();
   frame->Show( TRUE );