X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/ab0f03868e5fcc9d5a9dfe9573cc11d73ea7fb20..d7cff34d1f6a2088edcfce3ea5934cdfc6658eb4:/samples/image/image.cpp diff --git a/samples/image/image.cpp b/samples/image/image.cpp index 7898661a03..c03daca077 100644 --- a/samples/image/image.cpp +++ b/samples/image/image.cpp @@ -20,10 +20,14 @@ #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 class MyFrame; @@ -47,6 +51,8 @@ public: 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; @@ -60,8 +66,35 @@ private: DECLARE_EVENT_TABLE() }; + +const int nChoices = 8 ; +static const wxString bppchoices[nChoices] = +{ + "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[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: @@ -82,10 +115,10 @@ class MyImageFrame : public wxFrame { public: MyImageFrame(wxFrame *parent, const wxBitmap& bitmap) - : wxFrame(parent, -1, _T("Frame with image"), + : wxFrame(parent, -1, _T("Double click to save"), wxDefaultPosition, wxDefaultSize, - wxCAPTION), - m_bitmap(bitmap) + wxCAPTION | wxSYSTEM_MENU), + m_bitmap(bitmap) { SetClientSize(bitmap.GetWidth(), bitmap.GetHeight()); } @@ -96,6 +129,73 @@ public: dc.DrawBitmap( m_bitmap, 0, 0 ); } + void OnSave(wxCommandEvent& WXUNUSED(event)) + { + wxImage image(m_bitmap); + + int bppselection = wxGetSingleChoiceIndex("Set BMP BPP", + "Set BMP BPP", + nChoices, + 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; @@ -119,7 +219,8 @@ IMPLEMENT_APP(MyApp) IMPLEMENT_DYNAMIC_CLASS(MyCanvas, wxScrolledWindow) BEGIN_EVENT_TABLE(MyImageFrame, wxFrame) - EVT_PAINT(MyImageFrame::OnPaint) + EVT_PAINT(MyImageFrame::OnPaint) + EVT_LEFT_DCLICK(MyImageFrame::OnSave) END_EVENT_TABLE() BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow) @@ -141,6 +242,7 @@ MyCanvas::MyCanvas( wxWindow *parent, wxWindowID id, 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; @@ -151,7 +253,7 @@ MyCanvas::MyCanvas( wxWindow *parent, wxWindowID id, wxMemoryDC dc; dc.SelectObject( bitmap ); - dc.SetBrush( wxBrush( "orange", wxSOLID ) ); + dc.SetBrush( wxBrush( wxT("orange"), wxSOLID ) ); dc.SetPen( *wxBLACK_PEN ); dc.DrawRectangle( 0, 0, 100, 100 ); dc.SetBrush( *wxWHITE_BRUSH ); @@ -160,82 +262,94 @@ MyCanvas::MyCanvas( wxWindow *parent, wxWindowID id, // try to find the directory with our images wxString dir; - if ( wxFile::Exists("./horse.png") ) + if ( wxFile::Exists(wxT("./horse.png")) ) dir = "./"; - else if ( wxFile::Exists("../horse.png") ) + else if ( wxFile::Exists(wxT("../horse.png")) ) dir = "../"; else - wxLogWarning("Can't find image files in either '.' or '..'!"); + wxLogWarning(wxT("Can't find image files in either '.' or '..'!")); - wxImage image( bitmap ); + wxImage image = bitmap.ConvertToImage(); #if wxUSE_LIBPNG if ( !image.SaveFile( dir + wxString("test.png"), wxBITMAP_TYPE_PNG )) - wxLogError("Can't save file"); - + wxLogError(wxT("Can't save file")); + image.Destroy(); image.LoadFile( dir + wxString("test.png") ); - my_square = new wxBitmap( image.ConvertToBitmap() ); - + my_square = new wxBitmap( image ); + image.Destroy(); if ( !image.LoadFile( dir + wxString("horse.png")) ) - wxLogError("Can't load PNG image"); + wxLogError(wxT("Can't load PNG image")); else - my_horse_png = new wxBitmap( image.ConvertToBitmap() ); + my_horse_png = new wxBitmap( image ); #endif // wxUSE_LIBPNG #if wxUSE_LIBJPEG image.Destroy(); if ( !image.LoadFile( dir + wxString("horse.jpg")) ) - wxLogError("Can't load JPG image"); + wxLogError(wxT("Can't load JPG image")); else - my_horse_jpeg = new wxBitmap( image.ConvertToBitmap() ); + my_horse_jpeg = new wxBitmap( image ); #endif // wxUSE_LIBJPEG #if wxUSE_GIF image.Destroy(); if ( !image.LoadFile( dir + wxString("horse.gif")) ) - wxLogError("Can't load GIF image"); + wxLogError(wxT("Can't load GIF image")); else - my_horse_gif = new wxBitmap( image.ConvertToBitmap() ); + my_horse_gif = new wxBitmap( image ); #endif #if wxUSE_PCX image.Destroy(); if ( !image.LoadFile( dir + wxString("horse.pcx"), wxBITMAP_TYPE_PCX ) ) - wxLogError("Can't load PCX image"); + wxLogError(wxT("Can't load PCX image")); else - my_horse_pcx = new wxBitmap( image.ConvertToBitmap() ); + my_horse_pcx = new wxBitmap( image ); #endif image.Destroy(); if ( !image.LoadFile( dir + wxString("horse.bmp"), wxBITMAP_TYPE_BMP ) ) - wxLogError("Can't load BMP image"); + wxLogError(wxT("Can't load BMP image")); else - my_horse_bmp = new wxBitmap( image.ConvertToBitmap() ); + 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("Can't load PNM image"); + wxLogError(wxT("Can't load PNM image")); else - my_horse_pnm = new wxBitmap( image.ConvertToBitmap() ); + my_horse_pnm = new wxBitmap( image ); #endif #if wxUSE_LIBTIFF image.Destroy(); if ( !image.LoadFile( dir + wxString("horse.tif"), wxBITMAP_TYPE_TIF ) ) - wxLogError("Can't load TIFF image"); + wxLogError(wxT("Can't load TIFF image")); else - my_horse_tiff = new wxBitmap( image.ConvertToBitmap() ); + my_horse_tiff = new wxBitmap( image ); #endif CreateAntiAliasedBitmap(); @@ -243,13 +357,11 @@ MyCanvas::MyCanvas( wxWindow *parent, wxWindowID id, my_smile_xbm = new wxBitmap( (const char*)smile_bits, smile_width, smile_height, 1 ); -#ifndef __WXGTK__ #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 -#endif } MyCanvas::~MyCanvas() @@ -261,6 +373,7 @@ MyCanvas::~MyCanvas() 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; @@ -275,7 +388,7 @@ void MyCanvas::OnPaint( wxPaintEvent &WXUNUSED(event) ) if (my_square && my_square->Ok()) dc.DrawBitmap( *my_square, 30, 30 ); dc.DrawText( "Drawn directly", 150, 10 ); - dc.SetBrush( wxBrush( "orange", wxSOLID ) ); + dc.SetBrush( wxBrush( wxT("orange"), wxSOLID ) ); dc.SetPen( *wxBLACK_PEN ); dc.DrawRectangle( 150, 30, 100, 100 ); dc.SetBrush( *wxWHITE_BRUSH ); @@ -318,26 +431,30 @@ void MyCanvas::OnPaint( wxPaintEvent &WXUNUSED(event) ) 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, 1745 ); - dc.DrawText( "(green on red)", 30, 1760 ); - dc.SetTextForeground( "GREEN" ); - dc.SetTextBackground( "RED" ); - dc.DrawBitmap( *my_smile_xbm, 30, 1780 ); - - dc.SetTextForeground( "BLACK" ); - dc.DrawText( "After wxImage conversion", 150, 1745 ); - dc.DrawText( "(red on white)", 150, 1760 ); - dc.SetTextForeground( "RED" ); - wxImage i( *my_smile_xbm ); + dc.DrawText( "XBM bitmap", 30, 1975 ); + dc.DrawText( "(green on red)", 30, 1990 ); + dc.SetTextForeground( wxT("GREEN") ); + dc.SetTextBackground( wxT("RED") ); + dc.DrawBitmap( *my_smile_xbm, 30, 2010 ); + + dc.SetTextForeground( wxT("BLACK") ); + dc.DrawText( "After wxImage conversion", 150, 1975 ); + dc.DrawText( "(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( i.ConvertToBitmap(), 150, 1780, TRUE ); - dc.SetTextForeground( "BLACK" ); + dc.DrawBitmap( i.ConvertToBitmap(), 150, 2010, TRUE ); + dc.SetTextForeground( wxT("BLACK") ); } @@ -357,36 +474,36 @@ void MyCanvas::OnPaint( wxPaintEvent &WXUNUSED(event) ) if (mono.Ok()) { - dc.DrawText( "Mono bitmap", 30, 1865 ); - dc.DrawText( "(red on green)", 30, 1880 ); - dc.SetTextForeground( "RED" ); - dc.SetTextBackground( "GREEN" ); - dc.DrawBitmap( mono, 30, 1900 ); - - dc.SetTextForeground( "BLACK" ); - dc.DrawText( "After wxImage conversion", 150, 1865 ); - dc.DrawText( "(red on white)", 150, 1880 ); - dc.SetTextForeground( "RED" ); - wxImage i( mono ); + dc.DrawText( "Mono bitmap", 30, 2095 ); + dc.DrawText( "(red on green)", 30, 2110 ); + dc.SetTextForeground( wxT("RED") ); + dc.SetTextBackground( wxT("GREEN") ); + dc.DrawBitmap( mono, 30, 2130 ); + + dc.SetTextForeground( wxT("BLACK") ); + dc.DrawText( "After wxImage conversion", 150, 2095 ); + dc.DrawText( "(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( i.ConvertToBitmap(), 150, 1900, TRUE ); - dc.SetTextForeground( "BLACK" ); + dc.DrawBitmap( i.ConvertToBitmap(), 150, 2130, TRUE ); + dc.SetTextForeground( wxT("BLACK") ); } - dc.DrawText("XPM bitmap", 30, 2000); + dc.DrawText("XPM bitmap", 30, 2230); if ( m_bmpSmileXpm.Ok() ) { - dc.DrawBitmap(m_bmpSmileXpm, 30, 2020, TRUE); + dc.DrawBitmap(m_bmpSmileXpm, 30, 2250, TRUE); } - dc.DrawText("XPM icon", 150, 2000); + dc.DrawText("XPM icon", 150, 2230); if ( m_iconSmileXpm.Ok() ) { - dc.DrawIcon(m_iconSmileXpm, 150, 2020); + dc.DrawIcon(m_iconSmileXpm, 150, 2250); } } @@ -401,7 +518,7 @@ void MyCanvas::CreateAntiAliasedBitmap() dc.Clear(); dc.SetFont( wxFont( 24, wxDECORATIVE, wxNORMAL, wxNORMAL) ); - dc.SetTextForeground( "RED" ); + dc.SetTextForeground( wxT("RED") ); dc.DrawText( "This is anti-aliased Text.", 20, 20 ); dc.DrawText( "And a Rectangle.", 20, 60 ); @@ -409,7 +526,7 @@ void MyCanvas::CreateAntiAliasedBitmap() dc.SetPen( *wxTRANSPARENT_PEN ); 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. */ @@ -458,7 +575,7 @@ MyFrame::MyFrame() wxPoint(20,20), wxSize(470,360) ) { wxMenu *file_menu = new wxMenu(); - file_menu->Append( ID_NEW, "&New frame"); + file_menu->Append( ID_NEW, "&Show image..."); file_menu->AppendSeparator(); file_menu->Append( ID_ABOUT, "&About..."); file_menu->AppendSeparator(); @@ -493,7 +610,19 @@ void MyFrame::OnAbout( wxCommandEvent &WXUNUSED(event) ) void MyFrame::OnNewFrame( wxCommandEvent &WXUNUSED(event) ) { - (new MyImageFrame(this, *m_canvas->my_horse_bmp))->Show(); + 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(); } //----------------------------------------------------------------------------- @@ -526,6 +655,10 @@ bool MyApp::OnInit() wxImage::AddHandler( new wxPNMHandler ); #endif +#if wxUSE_XPM + wxImage::AddHandler( new wxXPMHandler ); +#endif + wxFrame *frame = new MyFrame(); frame->Show( TRUE );