X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/e8fdc26406cd8bd822955c9d1f12be86781ad379..790ba06b28f232abc42c4ed784df4b86bfbfe5e6:/samples/image/image.cpp diff --git a/samples/image/image.cpp b/samples/image/image.cpp index fac7bf1a87..625b8dc375 100644 --- a/samples/image/image.cpp +++ b/samples/image/image.cpp @@ -1,14 +1,31 @@ /* * 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 "smile.xbm" +#include "smile.xpm" + // derived classes @@ -19,47 +36,83 @@ class MyApp; class MyCanvas: public wxScrolledWindow { - DECLARE_DYNAMIC_CLASS(MyCanvas) - - public: - - MyCanvas(void) {}; +public: + MyCanvas() {}; MyCanvas( wxWindow *parent, wxWindowID, const wxPoint &pos, const wxSize &size ); - ~MyCanvas(void); + ~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_pcx; + wxBitmap *my_horse_pnm; + wxBitmap *my_horse_tiff; + wxBitmap *my_horse_xpm; - wxBitmap *my_horse; + wxBitmap *my_smile_xbm; wxBitmap *my_square; - - DECLARE_EVENT_TABLE() + wxBitmap *my_anti; + +protected: + wxBitmap m_bmpSmileXpm; + wxIcon m_iconSmileXpm; + +private: + DECLARE_DYNAMIC_CLASS(MyCanvas) + DECLARE_EVENT_TABLE() }; // MyFrame class MyFrame: public wxFrame { - DECLARE_DYNAMIC_CLASS(MyFrame) +public: + MyFrame(); - public: - - MyFrame(void); - void OnSize( wxSizeEvent &event ); void OnAbout( wxCommandEvent &event ); + void OnNewFrame( wxCommandEvent &event ); void OnQuit( wxCommandEvent &event ); - + MyCanvas *m_canvas; - - DECLARE_EVENT_TABLE() + +private: + DECLARE_DYNAMIC_CLASS(MyFrame) + DECLARE_EVENT_TABLE() +}; + +class MyImageFrame : public wxFrame +{ +public: + MyImageFrame(wxFrame *parent, const wxBitmap& bitmap) + : wxFrame(parent, -1, _T("Frame with image"), + 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 ); + } + +private: + wxBitmap m_bitmap; + + DECLARE_EVENT_TABLE() }; // MyApp class MyApp: public wxApp { - public: - - MyApp(void); - virtual bool OnInit(void); +public: + virtual bool OnInit(); }; // main program @@ -70,83 +123,381 @@ IMPLEMENT_APP(MyApp) IMPLEMENT_DYNAMIC_CLASS(MyCanvas, wxScrolledWindow) -BEGIN_EVENT_TABLE(MyCanvas,wxScrolledWindow) - EVT_PAINT (MyCanvas::OnPaint) +BEGIN_EVENT_TABLE(MyImageFrame, wxFrame) + EVT_PAINT(MyImageFrame::OnPaint) END_EVENT_TABLE() -MyCanvas::MyCanvas( wxWindow *parent, const wxWindowID id, const wxPoint &pos, const wxSize &size ) - : wxScrolledWindow( parent, id, pos, size, wxSUNKEN_BORDER ) -{ - wxImage image; +BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow) + EVT_PAINT(MyCanvas::OnPaint) +END_EVENT_TABLE() - wxBitmap bitmap( 100, 100 ); - - wxMemoryDC dc; - dc.SelectObject( bitmap ); - dc.SetBrush( wxBrush( "orange", wxSOLID ) ); - dc.SetPen( *wxWHITE_PEN ); - dc.DrawRectangle( 0, 0, 100, 100 ); - dc.SelectObject( wxNullBitmap ); - - image = bitmap.ConvertToImage(); - image.SaveFile( "../test.png", wxBITMAP_TYPE_PNG ); - - image.LoadFile( "../horse.png", wxBITMAP_TYPE_PNG ); - my_horse = new wxBitmap( image ); - - image.LoadFile( "../test.png", wxBITMAP_TYPE_PNG ); - my_square = new wxBitmap( image ); +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_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("./horse.png") ) + dir = "./"; + else if ( wxFile::Exists("../horse.png") ) + dir = "../"; + else + wxLogWarning("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("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("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("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("Can't load GIF image"); + else + 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"); + else + 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"); + else + my_horse_bmp = new wxBitmap( image ); + +#if wxUSE_XPM + image.Destroy(); + + if ( !image.LoadFile( dir + wxString("horse.xpm"), wxBITMAP_TYPE_XPM ) ) + wxLogError("Can't load XPM image"); + else + my_horse_xpm = new wxBitmap( image ); + + if ( !image.SaveFile( dir + wxString("test.xpm"), wxBITMAP_TYPE_XPM )) + wxLogError("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"); + else + 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"); + 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("saved.xpm", wxBITMAP_TYPE_XPM); +#endif } -MyCanvas::~MyCanvas(void) +MyCanvas::~MyCanvas() { - delete my_horse; - delete my_square; + 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) ) { - wxPaintDC dc( this ); - PrepareDC( dc ); - - dc.DrawText( "Loaded image", 30, 100 ); - if (my_square->Ok()) dc.DrawBitmap( *my_square, 30, 120 ); - - dc.DrawText( "Drawn directly", 150, 100 ); - dc.SetBrush( wxBrush( "orange", wxSOLID ) ); - dc.SetPen( *wxWHITE_PEN ); - dc.DrawRectangle( 150, 120, 100, 100 ); - - if (my_horse->Ok()) dc.DrawBitmap( *my_horse, 30, 240 ); + 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( "PCX handler", 30, 825 ); + if (my_horse_pcx && my_horse_pcx->Ok()) + dc.DrawBitmap( *my_horse_pcx, 30, 840 ); + + dc.DrawText( "BMP handler", 30, 1055 ); + if (my_horse_bmp && my_horse_bmp->Ok()) + dc.DrawBitmap( *my_horse_bmp, 30, 1070 ); + + 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() +{ + wxBitmap bitmap( 300, 300 ); + + wxMemoryDC dc; + + dc.SelectObject( bitmap ); + + dc.Clear(); + + 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.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.ConvertToBitmap() ); } // MyFrame -const ID_QUIT = 108; -const 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) + EVT_MENU (ID_NEW, MyFrame::OnNewFrame) END_EVENT_TABLE() -MyFrame::MyFrame(void) : - wxFrame( (wxFrame *) NULL, -1, "wxImage sample", wxPoint(20,20), wxSize(470,360) ) +MyFrame::MyFrame() + : wxFrame( (wxFrame *)NULL, -1, "wxImage sample", + 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(); - menu_bar->Append(file_menu, "File"); - menu_bar->Show( TRUE ); - + menu_bar->Append(file_menu, "&File"); + SetMenuBar( menu_bar ); - - m_canvas = new MyCanvas( this, -1, wxPoint(2,62), wxSize(300-4,120-4) ); - m_canvas->SetScrollbars( 10, 10, 50, 50 ); + + CreateStatusBar(2); + int widths[] = { -1, 100 }; + SetStatusWidths( 2, widths ); + + m_canvas = new MyCanvas( this, -1, wxPoint(0,0), wxSize(10,10) ); + + // 500 width * 2100 height + m_canvas->SetScrollbars( 10, 10, 50, 220 ); } void MyFrame::OnQuit( wxCommandEvent &WXUNUSED(event) ) @@ -156,29 +507,65 @@ void MyFrame::OnQuit( wxCommandEvent &WXUNUSED(event) ) void MyFrame::OnAbout( wxCommandEvent &WXUNUSED(event) ) { - (void) wxMessageBox( "wxImage demo\nRobert Roebling (c) 1998", "About wxImage Demo", wxOK ); + (void)wxMessageBox( "wxImage demo\n" + "Robert Roebling (c) 1998,2000", + "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 //----------------------------------------------------------------------------- -MyApp::MyApp(void) : - wxApp( ) -{ -} - -bool MyApp::OnInit(void) +bool MyApp::OnInit() { +#if wxUSE_LIBPNG wxImage::AddHandler( new wxPNGHandler ); - - wxFrame *frame = new MyFrame(); - frame->Show( TRUE ); - - return TRUE; -} +#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 ); + + return TRUE; +}