/* * Program: image * * Author: Robert Roebling * * Copyright: (C) 1998, Robert Roebling * */ // For compilers that support precompilation, includes "wx/wx.h". #include "wx/wxprec.h" #ifdef __BORLANDC__ #pragma hdrstop #endif #ifndef WX_PRECOMP #include "wx/wx.h" #endif #include "wx/image.h" #include "wx/file.h" #include "wx/mstream.h" #include "wx/wfstream.h" #include "wx/quantize.h" #if wxUSE_CLIPBOARD #include "wx/dataobj.h" #include "wx/clipbrd.h" #endif // wxUSE_CLIPBOARD #include "smile.xbm" #if !defined(__WINDOWS__) || wxUSE_XPM_IN_MSW #include "smile.xpm" #endif #if defined(__WXMSW__) #define wxHAVE_RAW_BITMAP #endif // derived classes class MyFrame; class MyApp; // MyCanvas class MyCanvas: public wxScrolledWindow { public: MyCanvas() {} MyCanvas( wxWindow *parent, wxWindowID, const wxPoint &pos, const wxSize &size ); ~MyCanvas(); void OnPaint( wxPaintEvent &event ); void CreateAntiAliasedBitmap(); wxBitmap *my_horse_png; wxBitmap *my_horse_jpeg; wxBitmap *my_horse_gif; wxBitmap *my_horse_bmp; wxBitmap *my_horse_bmp2; wxBitmap *my_horse_pcx; wxBitmap *my_horse_pnm; wxBitmap *my_horse_tiff; wxBitmap *my_horse_xpm; wxBitmap *my_horse_ico32; wxBitmap *my_horse_ico16; wxBitmap *my_horse_ico; wxBitmap *my_horse_cur; wxBitmap *my_horse_ani; wxBitmap *my_smile_xbm; wxBitmap *my_square; wxBitmap *my_anti; int xH, yH ; int m_ani_images ; protected: wxBitmap m_bmpSmileXpm; wxIcon m_iconSmileXpm; private: DECLARE_DYNAMIC_CLASS(MyCanvas) DECLARE_EVENT_TABLE() }; const int nChoices = 8 ; static const wxString bppchoices[nChoices] = { _T("1 bpp color"), _T("1 bpp B&W"), _T("4 bpp color"), _T("8 bpp color"), _T("8 bpp greyscale"), _T("8 bpp red"), _T("8 bpp own palette"), _T("24 bpp") }; static const int bppvalues[nChoices] = { wxBMP_1BPP, wxBMP_1BPP_BW, wxBMP_4BPP, wxBMP_8BPP, wxBMP_8BPP_GREY, wxBMP_8BPP_RED, wxBMP_8BPP_PALETTE, wxBMP_24BPP }; // MyFrame class MyFrame: public wxFrame { public: MyFrame(); void OnAbout( wxCommandEvent &event ); void OnNewFrame( wxCommandEvent &event ); #ifdef wxHAVE_RAW_BITMAP void OnTestRawBitmap( wxCommandEvent &event ); #endif // wxHAVE_RAW_BITMAP void OnQuit( wxCommandEvent &event ); #if wxUSE_CLIPBOARD void OnCopy(wxCommandEvent& event); void OnPaste(wxCommandEvent& event); #endif // wxUSE_CLIPBOARD MyCanvas *m_canvas; private: 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 | wxCLOSE_BOX), m_bitmap(bitmap) { SetClientSize(bitmap.GetWidth(), bitmap.GetHeight()); } void OnEraseBackground(wxEraseEvent& WXUNUSED(event)) { // do nothing here to be able to see how transparent images are shown } void OnPaint(wxPaintEvent& WXUNUSED(event)) { wxPaintDC dc( this ); dc.DrawBitmap( m_bitmap, 0, 0, TRUE /* use mask */ ); } void OnSave(wxMouseEvent& WXUNUSED(event)) { wxImage image = m_bitmap.ConvertToImage(); int bppselection = wxGetSingleChoiceIndex(_T("Set BMP BPP"), _T("Set BMP BPP"), nChoices, bppchoices, this); if ( bppselection == -1 ) { // cancelled return; } image.SetOption(wxIMAGE_OPTION_BMP_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|") wxT("ICO files (*.ico)|*.ico|") wxT("CUR files (*.cur)|*.cur"), wxSAVE); if ( savefilename.empty() ) return; if ( image.GetOptionInt(wxIMAGE_OPTION_BMP_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 loaded; wxString extension = savefilename.AfterLast('.').Lower(); if (extension == _T("cur")) { image.Rescale(32,32); image.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_X, 0); image.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_Y, 0); // This shows how you can save an image with explicitly // specified image format: loaded = image.SaveFile(savefilename, wxBITMAP_TYPE_CUR); } else { // This one guesses image format from filename extension // (it may fail if the extension is not recognized): loaded = image.SaveFile(savefilename); } if ( !loaded ) wxMessageBox(_T("No handler for this file type."), _T("File was not saved"), wxOK|wxCENTRE, this); } private: wxBitmap m_bitmap; DECLARE_EVENT_TABLE() }; #ifdef wxHAVE_RAW_BITMAP #include "wx/rawbmp.h" class MyRawBitmapFrame : public wxFrame { public: enum { BORDER = 15, SIZE = 150, REAL_SIZE = SIZE - 2*BORDER }; MyRawBitmapFrame(wxFrame *parent) : wxFrame(parent, -1, _T("Raw bitmaps (how exciting)")), m_bitmap(SIZE, SIZE, 32) { SetClientSize(SIZE, SIZE); wxRawBitmapData data(m_bitmap); if ( !data ) { wxLogError(_T("Failed to gain raw access to bitmap data")); return; } wxRawBitmapIterator p(data); p.Offset(BORDER, BORDER); for ( int y = 0; y < REAL_SIZE; ++y ) { wxRawBitmapIterator rowStart = p; int r = y < REAL_SIZE/3 ? 255 : 0, g = (REAL_SIZE/3 <= y) && (y < 2*(REAL_SIZE/3)) ? 255 : 0, b = 2*(REAL_SIZE/3) <= y ? 255 : 0; for ( int x = 0; x < REAL_SIZE; ++x ) { p.Red() = r; p.Green() = g; p.Blue() = b; p.Alpha() = x; ++p; // same as p.OffsetX(1) } p = rowStart; p.OffsetY(1); } } void OnPaint(wxPaintEvent& WXUNUSED(event)) { wxPaintDC dc( this ); dc.DrawText(_T("This is alpha and raw bitmap test"), 0, BORDER); dc.DrawText(_T("This is alpha and raw bitmap test"), 0, SIZE/2 - BORDER); dc.DrawText(_T("This is alpha and raw bitmap test"), 0, SIZE - 2*BORDER); dc.DrawBitmap( m_bitmap, 0, 0, TRUE /* use mask */ ); } private: wxBitmap m_bitmap; DECLARE_EVENT_TABLE() }; #endif // wxHAVE_RAW_BITMAP // MyApp class MyApp: public wxApp { public: virtual bool OnInit(); }; // main program IMPLEMENT_APP(MyApp) // MyCanvas IMPLEMENT_DYNAMIC_CLASS(MyCanvas, wxScrolledWindow) BEGIN_EVENT_TABLE(MyImageFrame, wxFrame) EVT_ERASE_BACKGROUND(MyImageFrame::OnEraseBackground) EVT_PAINT(MyImageFrame::OnPaint) EVT_LEFT_DCLICK(MyImageFrame::OnSave) END_EVENT_TABLE() #ifdef wxHAVE_RAW_BITMAP BEGIN_EVENT_TABLE(MyRawBitmapFrame, wxFrame) EVT_PAINT(MyRawBitmapFrame::OnPaint) END_EVENT_TABLE() #endif // wxHAVE_RAW_BITMAP BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow) EVT_PAINT(MyCanvas::OnPaint) END_EVENT_TABLE() 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_png = (wxBitmap*) NULL; my_horse_jpeg = (wxBitmap*) NULL; my_horse_gif = (wxBitmap*) NULL; my_horse_bmp = (wxBitmap*) NULL; my_horse_bmp2 = (wxBitmap*) NULL; my_horse_pcx = (wxBitmap*) NULL; my_horse_pnm = (wxBitmap*) NULL; my_horse_tiff = (wxBitmap*) NULL; my_horse_xpm = (wxBitmap*) NULL; my_horse_ico32 = (wxBitmap*) NULL; my_horse_ico16 = (wxBitmap*) NULL; my_horse_ico = (wxBitmap*) NULL; my_horse_cur = (wxBitmap*) NULL; my_horse_ani = (wxBitmap*) NULL; my_smile_xbm = (wxBitmap*) NULL; my_square = (wxBitmap*) NULL; my_anti = (wxBitmap*) NULL; m_ani_images = 0 ; SetBackgroundColour(* wxWHITE); wxBitmap bitmap( 100, 100 ); wxMemoryDC dc; dc.SelectObject( bitmap ); dc.SetBrush( wxBrush( wxT("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 = wxT("./"); else if ( wxFile::Exists(wxT("../horse.png")) ) dir = wxT("../"); else wxLogWarning(wxT("Can't find image files in either '.' or '..'!")); wxImage image = bitmap.ConvertToImage(); #if wxUSE_LIBPNG if ( !image.SaveFile( dir + _T("test.png"), wxBITMAP_TYPE_PNG )) wxLogError(wxT("Can't save file")); image.Destroy(); image.LoadFile( dir + _T("test.png") ); my_square = new wxBitmap( image ); image.Destroy(); if ( !image.LoadFile( dir + _T("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 + _T("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 + _T("horse.gif" )) ) wxLogError(wxT("Can't load GIF image")); else my_horse_gif = new wxBitmap( image ); #endif #if wxUSE_PCX image.Destroy(); if ( !image.LoadFile( dir + _T("horse.pcx"), wxBITMAP_TYPE_PCX ) ) wxLogError(wxT("Can't load PCX image")); else my_horse_pcx = new wxBitmap( image ); #endif image.Destroy(); if ( !image.LoadFile( dir + _T("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 + _T("horse.xpm"), wxBITMAP_TYPE_XPM ) ) wxLogError(wxT("Can't load XPM image")); else my_horse_xpm = new wxBitmap( image ); if ( !image.SaveFile( dir + _T("test.xpm"), wxBITMAP_TYPE_XPM )) wxLogError(wxT("Can't save file")); #endif #if wxUSE_PNM image.Destroy(); if ( !image.LoadFile( dir + _T("horse.pnm"), wxBITMAP_TYPE_PNM ) ) wxLogError(wxT("Can't load PNM image")); else my_horse_pnm = new wxBitmap( image ); #endif #if wxUSE_LIBTIFF image.Destroy(); if ( !image.LoadFile( dir + _T("horse.tif"), wxBITMAP_TYPE_TIF ) ) wxLogError(wxT("Can't load TIFF image")); else my_horse_tiff = new wxBitmap( image ); #endif CreateAntiAliasedBitmap(); my_smile_xbm = new wxBitmap( (const char*)smile_bits, smile_width, smile_height, 1 ); #if !defined(__WINDOWS__) || wxUSE_XPM_IN_MSW // demonstrates XPM automatically using the mask when saving if ( m_bmpSmileXpm.Ok() ) m_bmpSmileXpm.SaveFile(_T("saved.xpm"), wxBITMAP_TYPE_XPM); #endif #if wxUSE_ICO_CUR image.Destroy(); if ( !image.LoadFile( dir + _T("horse.ico"), wxBITMAP_TYPE_ICO, 0 ) ) wxLogError(wxT("Can't load first ICO image")); else my_horse_ico32 = new wxBitmap( image ); image.Destroy(); if ( !image.LoadFile( dir + _T("horse.ico"), wxBITMAP_TYPE_ICO, 1 ) ) wxLogError(wxT("Can't load second ICO image")); else my_horse_ico16 = new wxBitmap( image ); image.Destroy(); if ( !image.LoadFile( dir + _T("horse.ico") ) ) wxLogError(wxT("Can't load best ICO image")); else my_horse_ico = new wxBitmap( image ); image.Destroy(); if ( !image.LoadFile( dir + _T("horse.cur"), wxBITMAP_TYPE_CUR ) ) wxLogError(wxT("Can't load best ICO image")); else { my_horse_cur = new wxBitmap( image ); xH = 30 + image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_X) ; yH = 2420 + image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_Y) ; } m_ani_images = wxImage::GetImageCount ( dir + _T("horse3.ani"), wxBITMAP_TYPE_ANI ); if (m_ani_images==0) wxLogError(wxT("No ANI-format images found")); else my_horse_ani = new wxBitmap [m_ani_images]; int i ; for (i=0; i < m_ani_images; i++) { image.Destroy(); if (!image.LoadFile( dir + _T("horse3.ani"), wxBITMAP_TYPE_ANI, i )) { wxString tmp = wxT("Can't load image number "); tmp << i ; wxLogError(tmp); } else my_horse_ani [i] = wxBitmap( image ); } #endif // wxUSE_ICO_CUR image.Destroy(); // test image loading from stream wxFile file(dir + _T("horse.bmp")); off_t len = file.Length(); void *data = malloc(len); if ( file.Read(data, len) != len ) wxLogError(_T("Reading bitmap file failed")); else { wxMemoryInputStream mis(data, len); if ( !image.LoadFile(mis) ) wxLogError(wxT("Can't load BMP image from stream")); else my_horse_bmp2 = new wxBitmap( image ); } free(data); } MyCanvas::~MyCanvas() { delete my_horse_pnm; delete my_horse_png; delete my_horse_jpeg; delete my_horse_gif; delete my_horse_bmp; delete my_horse_bmp2; delete my_horse_pcx; delete my_horse_tiff; delete my_horse_xpm; delete my_horse_ico32; delete my_horse_ico16; delete my_horse_ico; delete my_horse_cur; delete [] my_horse_ani; delete my_smile_xbm; delete my_square; delete my_anti; } void MyCanvas::OnPaint( wxPaintEvent &WXUNUSED(event) ) { wxPaintDC dc( this ); PrepareDC( dc ); dc.DrawText( _T("Loaded image"), 30, 10 ); if (my_square && my_square->Ok()) dc.DrawBitmap( *my_square, 30, 30 ); dc.DrawText( _T("Drawn directly"), 150, 10 ); dc.SetBrush( wxBrush( wxT("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( _T("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( _T("GetSubBitmap()"), 280, 190 ); dc.DrawBitmap( sub, 280, 210 ); } dc.DrawText( _T("JPEG handler"), 30, 365 ); if (my_horse_jpeg && my_horse_jpeg->Ok()) dc.DrawBitmap( *my_horse_jpeg, 30, 380 ); dc.DrawText( _T("GIF handler"), 30, 595 ); if (my_horse_gif && my_horse_gif->Ok()) dc.DrawBitmap( *my_horse_gif, 30, 610 ); dc.DrawText( _T("PCX handler"), 30, 825 ); if (my_horse_pcx && my_horse_pcx->Ok()) dc.DrawBitmap( *my_horse_pcx, 30, 840 ); dc.DrawText( _T("BMP handler"), 30, 1055 ); if (my_horse_bmp && my_horse_bmp->Ok()) dc.DrawBitmap( *my_horse_bmp, 30, 1070 ); dc.DrawText( _T("BMP read from memory"), 280, 1055 ); if (my_horse_bmp2 && my_horse_bmp2->Ok()) dc.DrawBitmap( *my_horse_bmp2, 280, 1070 ); dc.DrawText( _T("PNM handler"), 30, 1285 ); if (my_horse_pnm && my_horse_pnm->Ok()) dc.DrawBitmap( *my_horse_pnm, 30, 1300 ); dc.DrawText( _T("TIFF handler"), 30, 1515 ); if (my_horse_tiff && my_horse_tiff->Ok()) dc.DrawBitmap( *my_horse_tiff, 30, 1530 ); dc.DrawText( _T("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( _T("XBM bitmap"), 30, 1975 ); dc.DrawText( _T("(green on red)"), 30, 1990 ); dc.SetTextForeground( _T("GREEN") ); dc.SetTextBackground( _T("RED") ); dc.DrawBitmap( *my_smile_xbm, 30, 2010 ); dc.SetTextForeground( wxT("BLACK") ); dc.DrawText( _T("After wxImage conversion"), 150, 1975 ); dc.DrawText( _T("(red on white)"), 150, 1990 ); dc.SetTextForeground( wxT("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( wxBitmap(i), 150, 2010, TRUE ); dc.SetTextForeground( wxT("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( _T("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( _T("Mono bitmap"), 30, 2095 ); dc.DrawText( _T("(red on green)"), 30, 2110 ); dc.SetTextForeground( wxT("RED") ); dc.SetTextBackground( wxT("GREEN") ); dc.DrawBitmap( mono, 30, 2130 ); dc.SetTextForeground( wxT("BLACK") ); dc.DrawText( _T("After wxImage conversion"), 150, 2095 ); dc.DrawText( _T("(red on white)"), 150, 2110 ); dc.SetTextForeground( wxT("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( wxBitmap(i), 150, 2130, TRUE ); dc.SetTextForeground( wxT("BLACK") ); } dc.DrawText(_T("XPM bitmap"), 30, 2230); if ( m_bmpSmileXpm.Ok() ) { dc.DrawBitmap(m_bmpSmileXpm, 30, 2250, TRUE); } dc.DrawText(_T("XPM icon"), 150, 2230); if ( m_iconSmileXpm.Ok() ) { dc.DrawIcon(m_iconSmileXpm, 150, 2250); } dc.DrawText( _T("ICO handler (1st image)"), 30, 2290 ); if (my_horse_ico32 && my_horse_ico32->Ok()) dc.DrawBitmap( *my_horse_ico32, 30, 2330, TRUE ); dc.DrawText( _T("ICO handler (2nd image)"), 230, 2290 ); if (my_horse_ico16 && my_horse_ico16->Ok()) dc.DrawBitmap( *my_horse_ico16, 230, 2330, TRUE ); dc.DrawText( _T("ICO handler (best image)"), 430, 2290 ); if (my_horse_ico && my_horse_ico->Ok()) dc.DrawBitmap( *my_horse_ico, 430, 2330, TRUE ); dc.DrawText( _T("CUR handler"), 30, 2390 ); if (my_horse_cur && my_horse_cur->Ok()) { dc.DrawBitmap( *my_horse_cur, 30, 2420, TRUE ); dc.SetPen (*wxRED_PEN); dc.DrawLine (xH-10,yH,xH+10,yH); dc.DrawLine (xH,yH-10,xH,yH+10); } dc.DrawText( _T("ANI handler"), 230, 2390 ); int i ; for (i=0; i < m_ani_images; i ++) if (my_horse_ani[i].Ok()) { dc.DrawBitmap( my_horse_ani[i], 230 + i * 2 * my_horse_ani[i].GetWidth() , 2420, TRUE ); } } void MyCanvas::CreateAntiAliasedBitmap() { wxBitmap bitmap( 300, 300 ); wxMemoryDC dc; dc.SelectObject( bitmap ); dc.Clear(); dc.SetFont( wxFont( 24, wxDECORATIVE, wxNORMAL, wxNORMAL) ); dc.SetTextForeground( wxT("RED") ); dc.DrawText( _T("This is anti-aliased Text."), 20, 20 ); dc.DrawText( _T("And a Rectangle."), 20, 60 ); dc.SetBrush( *wxRED_BRUSH ); dc.SetPen( *wxTRANSPARENT_PEN ); dc.DrawRoundedRectangle( 20, 100, 200, 180, 20 ); wxImage original= bitmap.ConvertToImage(); 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 ) + original.GetRed( x*2-1, y*2 ) + original.GetRed( x*2, y*2+1 ) + original.GetRed( x*2+1, y*2+1 ); red = red/4; 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+1 ); green = green/4; 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+1 ); blue = blue/4; anti.SetRGB( x, y, red, green, blue ); } my_anti = new wxBitmap(anti); } // MyFrame enum { ID_QUIT = 108, ID_ABOUT, ID_NEW, ID_SHOWRAW }; 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) #ifdef wxHAVE_RAW_BITMAP EVT_MENU (ID_SHOWRAW, MyFrame::OnTestRawBitmap) #endif #if wxUSE_CLIPBOARD EVT_MENU(wxID_COPY, MyFrame::OnCopy) EVT_MENU(wxID_PASTE, MyFrame::OnPaste) #endif // wxUSE_CLIPBOARD END_EVENT_TABLE() MyFrame::MyFrame() : wxFrame( (wxFrame *)NULL, -1, _T("wxImage sample"), wxPoint(20,20), wxSize(470,360) ) { wxMenuBar *menu_bar = new wxMenuBar(); wxMenu *menuImage = new wxMenu; menuImage->Append( ID_NEW, _T("&Show any image...\tCtrl-O")); #ifdef wxHAVE_RAW_BITMAP menuImage->Append( ID_SHOWRAW, _T("Test &raw bitmap...\tCtrl-R")); #endif menuImage->AppendSeparator(); menuImage->Append( ID_ABOUT, _T("&About...")); menuImage->AppendSeparator(); menuImage->Append( ID_QUIT, _T("E&xit\tCtrl-Q")); menu_bar->Append(menuImage, _T("&Image")); #if wxUSE_CLIPBOARD wxMenu *menuClipboard = new wxMenu; menuClipboard->Append(wxID_COPY, _T("&Copy test image\tCtrl-C")); menuClipboard->Append(wxID_PASTE, _T("&Paste image\tCtrl-V")); menu_bar->Append(menuClipboard, _T("&Clipboard")); #endif // wxUSE_CLIPBOARD SetMenuBar( menu_bar ); CreateStatusBar(2); int widths[] = { -1, 100 }; SetStatusWidths( 2, widths ); m_canvas = new MyCanvas( this, -1, wxPoint(0,0), wxSize(10,10) ); // 500 width * 2500 height m_canvas->SetScrollbars( 10, 10, 50, 250 ); } void MyFrame::OnQuit( wxCommandEvent &WXUNUSED(event) ) { Close( TRUE ); } void MyFrame::OnAbout( wxCommandEvent &WXUNUSED(event) ) { (void)wxMessageBox( _T("wxImage demo\n") _T("Robert Roebling (c) 1998,2000"), _T("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, wxBitmap(image)))->Show(); } #ifdef wxHAVE_RAW_BITMAP void MyFrame::OnTestRawBitmap( wxCommandEvent &event ) { (new MyRawBitmapFrame(this))->Show(); } #endif // wxHAVE_RAW_BITMAP #if wxUSE_CLIPBOARD void MyFrame::OnCopy(wxCommandEvent& WXUNUSED(event)) { wxBitmapDataObject *dobjBmp = new wxBitmapDataObject; dobjBmp->SetBitmap(*m_canvas->my_horse_png); if ( !wxTheClipboard->SetData(dobjBmp) ) { wxLogError(_T("Failed to copy bitmap to clipboard")); } } void MyFrame::OnPaste(wxCommandEvent& WXUNUSED(event)) { wxBitmapDataObject dobjBmp; if ( !wxTheClipboard->GetData(dobjBmp) ) { wxLogMessage(_T("No bitmap data in the clipboard")); } else { (new MyImageFrame(this, dobjBmp.GetBitmap()))->Show(); } } #endif // wxUSE_CLIPBOARD //----------------------------------------------------------------------------- // 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 #if wxUSE_ICO_CUR wxImage::AddHandler( new wxICOHandler ); wxImage::AddHandler( new wxCURHandler ); wxImage::AddHandler( new wxANIHandler ); #endif wxFrame *frame = new MyFrame(); frame->Show( TRUE ); return TRUE; }