X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/8b53e5a2261d192bce49d40f0019f52f73b1557a..cae5359f186e755ca52b8e69e311b4ec6c0a1836:/samples/image/image.cpp diff --git a/samples/image/image.cpp b/samples/image/image.cpp index 1c64b7aedc..30bb7eb986 100644 --- a/samples/image/image.cpp +++ b/samples/image/image.cpp @@ -1,15 +1,27 @@ /* * 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" + // derived classes class MyFrame; @@ -19,47 +31,46 @@ 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 ); - - wxBitmap *my_horse; + void CreateAntiAliasedBitmap(); + + wxBitmap *my_horse_png; + wxBitmap *my_horse_jpeg; + wxBitmap *my_horse_gif; + wxBitmap *my_horse_bmp; wxBitmap *my_square; - - DECLARE_EVENT_TABLE() + wxBitmap *my_anti; + + 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 OnQuit( wxCommandEvent &event ); - + MyCanvas *m_canvas; - - DECLARE_EVENT_TABLE() + + DECLARE_DYNAMIC_CLASS(MyFrame) + DECLARE_EVENT_TABLE() }; // MyApp class MyApp: public wxApp { - public: - - MyApp(void); - virtual bool OnInit(void); +public: + virtual bool OnInit(); }; // main program @@ -70,36 +81,80 @@ IMPLEMENT_APP(MyApp) IMPLEMENT_DYNAMIC_CLASS(MyCanvas, wxScrolledWindow) -BEGIN_EVENT_TABLE(MyCanvas,wxScrolledWindow) - EVT_PAINT (MyCanvas::OnPaint) +BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow) + EVT_PAINT(MyCanvas::OnPaint) END_EVENT_TABLE() -MyCanvas::MyCanvas( wxWindow *parent, const 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 ) { + my_horse_png = (wxBitmap*) NULL; + my_horse_jpeg = (wxBitmap*) NULL; + my_horse_gif = (wxBitmap*) NULL; + my_horse_bmp = (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( *wxWHITE_PEN ); dc.DrawRectangle( 0, 0, 100, 100 ); 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 ); - image.SaveFile( "../test.png", wxBITMAP_TYPE_PNG ); - image.LoadFile( "../horse.png", wxBITMAP_TYPE_PNG ); - my_horse = new wxBitmap( image.ConvertToBitmap() ); + if ( !image.SaveFile( dir + wxString("test.png"), wxBITMAP_TYPE_PNG ) ) + wxLogError("Can't save file"); + + if ( !image.LoadFile( dir + wxString("horse.png"), wxBITMAP_TYPE_PNG ) ) + wxLogError("Can't load PNG image"); + else + my_horse_png = new wxBitmap( image.ConvertToBitmap() ); - image.LoadFile( "../test.png", wxBITMAP_TYPE_PNG ); + if ( !image.LoadFile( dir + wxString("horse.jpg"), wxBITMAP_TYPE_JPEG ) ) + wxLogError("Can't load JPG image"); + else + my_horse_jpeg = new wxBitmap( image.ConvertToBitmap() ); + + if ( !image.LoadFile( dir + wxString("horse.gif"), wxBITMAP_TYPE_GIF ) ) + wxLogError("Can't load GIF image"); + else + my_horse_gif = new wxBitmap( image.ConvertToBitmap() ); + + if ( !image.LoadFile( dir + wxString("horse.bmp"), wxBITMAP_TYPE_BMP ) ) + wxLogError("Can't load BMP image"); + else + my_horse_bmp = new wxBitmap( image.ConvertToBitmap() ); + + image.LoadFile( dir + wxString("test.png"), wxBITMAP_TYPE_PNG ); my_square = new wxBitmap( image.ConvertToBitmap() ); + + CreateAntiAliasedBitmap(); } -MyCanvas::~MyCanvas(void) +MyCanvas::~MyCanvas() { - delete my_horse; + delete my_horse_png; + delete my_horse_jpeg; + delete my_horse_gif; + delete my_horse_bmp; delete my_square; + delete my_anti; } void MyCanvas::OnPaint( wxPaintEvent &WXUNUSED(event) ) @@ -107,15 +162,76 @@ 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( "Loaded image", 30, 10 ); + if (my_square && my_square->Ok()) dc.DrawBitmap( *my_square, 30, 30 ); - dc.DrawText( "Drawn directly", 150, 100 ); + dc.DrawText( "Drawn directly", 150, 10 ); dc.SetBrush( wxBrush( "orange", wxSOLID ) ); dc.SetPen( *wxWHITE_PEN ); - dc.DrawRectangle( 150, 120, 100, 100 ); + dc.DrawRectangle( 150, 30, 100, 100 ); + + if (my_anti && my_anti->Ok()) dc.DrawBitmap( *my_anti, 250, 140 ); + + dc.DrawText( "PNG handler", 30, 135 ); + if (my_horse_png && my_horse_png->Ok()) dc.DrawBitmap( *my_horse_png, 30, 150 ); + + 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( "BMP handler", 30, 815 ); + if (my_horse_bmp && my_horse_bmp->Ok()) dc.DrawBitmap( *my_horse_bmp, 30, 830 ); +} + +void MyCanvas::CreateAntiAliasedBitmap() +{ + wxBitmap bitmap( 300, 300 ); + + wxMemoryDC dc; + + dc.SelectObject( bitmap ); + + dc.Clear(); + + dc.SetFont( wxFont( 24, wxDECORATIVE, wxDEFAULT, wxDEFAULT ) ); + 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 ); + wxImage anti( 150, 150 ); + + /* This is quite slow, but safe. Use wxImage::GetData() for speed instead. */ - if (my_horse->Ok()) dc.DrawBitmap( *my_horse, 30, 240 ); + 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 @@ -128,28 +244,27 @@ IMPLEMENT_DYNAMIC_CLASS( MyFrame, wxFrame ) BEGIN_EVENT_TABLE(MyFrame,wxFrame) EVT_MENU (ID_ABOUT, MyFrame::OnAbout) EVT_MENU (ID_QUIT, MyFrame::OnQuit) - EVT_SIZE (MyFrame::OnSize) 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_ABOUT, "&About.."); + 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 ); - + CreateStatusBar(2); int widths[] = { -1, 100 }; SetStatusWidths( 2, widths ); - + m_canvas = new MyCanvas( this, -1, wxPoint(0,0), wxSize(10,10) ); - m_canvas->SetScrollbars( 10, 10, 50, 50 ); + m_canvas->SetScrollbars( 10, 10, 50, 100 ); } void MyFrame::OnQuit( wxCommandEvent &WXUNUSED(event) ) @@ -159,36 +274,31 @@ 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 MyFrame::OnSize( wxSizeEvent &WXUNUSED(event) ) -{ - int w,h; - GetClientSize( &w, &h ); - m_canvas->SetSize( w, h ); + (void)wxMessageBox( "wxImage demo\n" + "\n" + "Robert Roebling (c) 1998", + "About wxImage Demo", wxICON_INFORMATION | wxOK ); } //----------------------------------------------------------------------------- // 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 + wxImage::AddHandler( new wxGIFHandler ); + wxFrame *frame = new MyFrame(); + frame->Show( TRUE ); + return TRUE; +}