Fix a crash in wxExecute() in wxMSW too.

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

diff --git a/samples/image/image.cpp b/samples/image/image.cpp
index 3db24946fa49a06b6a0c636adbba159386fd8872..e9de0eecc743c5c21025daae76689ffb22ce532c 100644 (file)
--- a/samples/image/image.cpp
+++ b/samples/image/image.cpp
@@ -1,11 +1,14 @@
-/*
- * Program: image
- *
- * Author: Robert Roebling
- *
- * Copyright: (C) 1998, Robert Roebling
- *
- */
+///////////////////////////////////////////////////////////////////////////////
+// Name:        samples/image/image.cpp
+// Purpose:     sample showing operations with wxImage
+// Author:      Robert Roebling
+// Modified by: Francesco Montorsi
+// Created:     1998
+// RCS-ID:      $Id$
+// Copyright:   (c) 1998-2005 Robert Roebling
+//              (c) 2005-2009 Vadim Zeitlin
+// Licence:     wxWindows licence
+///////////////////////////////////////////////////////////////////////////////

 
 // For compilers that support precompilation, includes "wx/wx.h".
 #include "wx/wxprec.h"
 
 // For compilers that support precompilation, includes "wx/wx.h".
 #include "wx/wxprec.h"


@@ -15,52 +18,59 @@
 #endif
 
 #ifndef WX_PRECOMP
 #endif
 
 #ifndef WX_PRECOMP

-#include "wx/wx.h"
+    #include "wx/wx.h"

 #endif
 
 #include "wx/image.h"
 #include "wx/file.h"
 #endif
 
 #include "wx/image.h"
 #include "wx/file.h"

+#include "wx/filename.h"
+#include "wx/graphics.h"
+#include "wx/mstream.h"
+#include "wx/wfstream.h"
+#include "wx/quantize.h"
+#include "wx/scopedptr.h"
+#include "wx/stopwatch.h"
+#include "wx/versioninfo.h"
+
+#if wxUSE_CLIPBOARD
+    #include "wx/dataobj.h"
+    #include "wx/clipbrd.h"
+#endif // wxUSE_CLIPBOARD
+
+#if defined(__WXMSW__)
+    #ifdef wxHAVE_RAW_BITMAP
+    #include "wx/rawbmp.h"
+    #endif
+#endif
+
+#if defined(__WXMAC__) || defined(__WXGTK__)
+    #define wxHAVE_RAW_BITMAP
+    #include "wx/rawbmp.h"
+#endif

 
 

-#include "smile.xbm"
-#include "smile.xpm"
+#include "canvas.h"

 
 

-// derived classes
+#ifndef wxHAS_IMAGES_IN_RESOURCES
+    #include "../sample.xpm"
+#endif

 
 

-class MyFrame;
-class MyApp;
+// ============================================================================
+// declarations
+// ============================================================================

 
 

-// MyCanvas
+//-----------------------------------------------------------------------------
+// MyApp
+//-----------------------------------------------------------------------------

 
 

-class MyCanvas: public wxScrolledWindow
+class MyApp: public wxApp

 {
 public:
 {
 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_pcx;
-    wxBitmap  *my_horse_pnm;
-    wxBitmap  *my_horse_tiff;
-    wxBitmap  *my_smile_xbm;
-    wxBitmap  *my_square;
-    wxBitmap  *my_anti;
-
-protected:
-    wxBitmap m_bmpSmileXpm;
-    wxIcon   m_iconSmileXpm;
-
-private:
-    DECLARE_DYNAMIC_CLASS(MyCanvas)
-    DECLARE_EVENT_TABLE()
+    virtual bool OnInit();

 };
 
 };
 

+// ----------------------------------------------------------------------------

 // MyFrame
 // MyFrame

+// ----------------------------------------------------------------------------

 
 class MyFrame: public wxFrame
 {
 
 class MyFrame: public wxFrame
 {


@@ -68,428 +78,904 @@ public:
     MyFrame();
 
     void OnAbout( wxCommandEvent &event );
     MyFrame();
 
     void OnAbout( wxCommandEvent &event );

+    void OnNewFrame( wxCommandEvent &event );
+    void OnImageInfo( wxCommandEvent &event );
+    void OnThumbnail( wxCommandEvent &event );
+
+#ifdef wxHAVE_RAW_BITMAP
+    void OnTestRawBitmap( wxCommandEvent &event );
+#endif // wxHAVE_RAW_BITMAP
+#if wxUSE_GRAPHICS_CONTEXT
+    void OnTestGraphics(wxCommandEvent& event);
+#endif // wxUSE_GRAPHICS_CONTEXT

     void OnQuit( wxCommandEvent &event );
 
     void OnQuit( wxCommandEvent &event );
 

+#if wxUSE_CLIPBOARD
+    void OnCopy(wxCommandEvent& event);
+    void OnPaste(wxCommandEvent& event);
+#endif // wxUSE_CLIPBOARD
+

     MyCanvas         *m_canvas;
 
 private:
     MyCanvas         *m_canvas;
 
 private:

+    // ask user for the file name and try to load an image from it
+    //
+    // return the file path on success, empty string if we failed to load the
+    // image or were cancelled by user
+    static wxString LoadUserImage(wxImage& image);
+
+

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

-// MyApp
+// ----------------------------------------------------------------------------
+// Frame used for showing a standalone image
+// ----------------------------------------------------------------------------

 
 

-class MyApp: public wxApp
+enum

 {
 {

-public:
-    virtual bool OnInit();
+    ID_ROTATE_LEFT = wxID_HIGHEST+1,
+    ID_ROTATE_RIGHT,
+    ID_RESIZE,
+    ID_PAINT_BG

 };
 
 };
 

-// main program
+class MyImageFrame : public wxFrame
+{
+public:
+    MyImageFrame(wxFrame *parent, const wxString& desc, const wxImage& image)
+    {
+        Create(parent, desc, wxBitmap(image), image.GetImageCount(desc));
+    }

 
 

-IMPLEMENT_APP(MyApp)
+    MyImageFrame(wxFrame *parent, const wxString& desc, const wxBitmap& bitmap)
+    {
+        Create(parent, desc, bitmap);
+    }

 
 

-// MyCanvas
+private:
+    bool Create(wxFrame *parent,
+                const wxString& desc,
+                const wxBitmap& bitmap,
+                int numImages = 1)
+    {
+        if ( !wxFrame::Create(parent, wxID_ANY,
+                              wxString::Format(wxT("Image from %s"), desc),
+                              wxDefaultPosition, wxDefaultSize,
+                              wxDEFAULT_FRAME_STYLE | wxFULL_REPAINT_ON_RESIZE) )
+            return false;
+
+        m_bitmap = bitmap;
+        m_zoom = 1.;
+
+        wxMenu *menu = new wxMenu;
+        menu->Append(wxID_SAVEAS);
+        menu->AppendSeparator();
+        menu->AppendCheckItem(ID_PAINT_BG, wxT("&Paint background"),
+                              "Uncheck this for transparent images");
+        menu->AppendSeparator();
+        menu->Append(ID_RESIZE, wxT("&Fit to window\tCtrl-F"));
+        menu->Append(wxID_ZOOM_IN, "Zoom &in\tCtrl-+");
+        menu->Append(wxID_ZOOM_OUT, "Zoom &out\tCtrl--");
+        menu->Append(wxID_ZOOM_100, "Reset zoom to &100%\tCtrl-1");
+        menu->AppendSeparator();
+        menu->Append(ID_ROTATE_LEFT, wxT("Rotate &left\tCtrl-L"));
+        menu->Append(ID_ROTATE_RIGHT, wxT("Rotate &right\tCtrl-R"));
+
+        wxMenuBar *mbar = new wxMenuBar;
+        mbar->Append(menu, wxT("&Image"));
+        SetMenuBar(mbar);
+
+        mbar->Check(ID_PAINT_BG, true);
+
+        CreateStatusBar(2);
+        if ( numImages != 1 )
+            SetStatusText(wxString::Format("%d images", numImages), 1);
+
+        SetClientSize(bitmap.GetWidth(), bitmap.GetHeight());
+
+        UpdateStatusBar();
+
+        Show();
+
+        return true;
+    }

 
 

-IMPLEMENT_DYNAMIC_CLASS(MyCanvas, wxScrolledWindow)
+    void OnEraseBackground(wxEraseEvent& WXUNUSED(event))
+    {
+        // do nothing here to be able to see how transparent images are shown
+    }

 
 

-BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
-  EVT_PAINT(MyCanvas::OnPaint)
-END_EVENT_TABLE()
+    void OnPaint(wxPaintEvent& WXUNUSED(event))
+    {
+        wxPaintDC dc(this);

 
 

-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_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 '..'!");
+        if ( GetMenuBar()->IsChecked(ID_PAINT_BG) )
+            dc.Clear();

 
 

-    wxImage image( bitmap );
+        dc.SetUserScale(m_zoom, m_zoom);

 
 

+        const wxSize size = GetClientSize();
+        dc.DrawBitmap
+           (
+                m_bitmap,
+                dc.DeviceToLogicalX((size.x - m_zoom*m_bitmap.GetWidth())/2),
+                dc.DeviceToLogicalY((size.y - m_zoom*m_bitmap.GetHeight())/2),
+                true /* use mask */
+           );
+    }
+
+    void OnSave(wxCommandEvent& WXUNUSED(event))
+    {
+#if wxUSE_FILEDLG
+        wxImage image = m_bitmap.ConvertToImage();
+
+        wxString savefilename = wxFileSelector( wxT("Save Image"),
+                                                wxEmptyString,
+                                                wxEmptyString,
+                                                wxEmptyString,
+                                                wxT("BMP files (*.bmp)|*.bmp|")

 #if wxUSE_LIBPNG
 #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.ConvertToBitmap() );
-    
-    image.Destroy();
-
-    if ( !image.LoadFile( dir + wxString("horse.png")) )
-        wxLogError("Can't load PNG image");
-    else
-        my_horse_png = new wxBitmap( image.ConvertToBitmap() );
+                                                wxT("PNG files (*.png)|*.png|")
+#endif
+#if wxUSE_LIBJPEG
+                                                wxT("JPEG files (*.jpg)|*.jpg|")
+#endif
+#if wxUSE_GIF
+                                                wxT("GIF files (*.gif)|*.gif|")
+#endif
+#if wxUSE_LIBTIFF
+                                                wxT("TIFF files (*.tif)|*.tif|")
+#endif
+#if wxUSE_PCX
+                                                wxT("PCX files (*.pcx)|*.pcx|")
+#endif
+#if wxUSE_XPM
+                                                wxT("X PixMap files (*.xpm)|*.xpm|")
+#endif
+                                                wxT("ICO files (*.ico)|*.ico|")
+                                                wxT("CUR files (*.cur)|*.cur"),
+                                                wxFD_SAVE | wxFD_OVERWRITE_PROMPT,
+                                                this);
+
+        if ( savefilename.empty() )
+            return;
+
+        wxString extension;
+        wxFileName::SplitPath(savefilename, NULL, NULL, &extension);
+
+        bool saved = false;
+        if ( extension == wxT("bmp") )
+        {
+            static const int bppvalues[] =
+            {
+                wxBMP_1BPP,
+                wxBMP_1BPP_BW,
+                wxBMP_4BPP,
+                wxBMP_8BPP,
+                wxBMP_8BPP_GREY,
+                wxBMP_8BPP_RED,
+                wxBMP_8BPP_PALETTE,
+                wxBMP_24BPP
+            };
+
+            const wxString bppchoices[] =
+            {
+                wxT("1 bpp color"),
+                wxT("1 bpp B&W"),
+                wxT("4 bpp color"),
+                wxT("8 bpp color"),
+                wxT("8 bpp greyscale"),
+                wxT("8 bpp red"),
+                wxT("8 bpp own palette"),
+                wxT("24 bpp")
+            };
+
+            int bppselection = wxGetSingleChoiceIndex(wxT("Set BMP BPP"),
+                                                    wxT("Image sample: save file"),
+                                                    WXSIZEOF(bppchoices),
+                                                    bppchoices,
+                                                    this);
+            if ( bppselection != -1 )
+            {
+                int format = bppvalues[bppselection];
+                image.SetOption(wxIMAGE_OPTION_BMP_FORMAT, format);
+
+                if ( format == wxBMP_8BPP_PALETTE )
+                {
+                    unsigned char *cmap = new unsigned char [256];
+                    for ( int i = 0; i < 256; i++ )
+                        cmap[i] = (unsigned char)i;
+                    image.SetPalette(wxPalette(256, cmap, cmap, cmap));
+
+                    delete[] cmap;
+                }
+            }
+        }
+#if wxUSE_LIBPNG
+        else if ( extension == wxT("png") )
+        {
+            static const int pngvalues[] =
+            {
+                wxPNG_TYPE_COLOUR,
+                wxPNG_TYPE_COLOUR,
+                wxPNG_TYPE_GREY,
+                wxPNG_TYPE_GREY,
+                wxPNG_TYPE_GREY_RED,
+                wxPNG_TYPE_GREY_RED,
+            };
+
+            const wxString pngchoices[] =
+            {
+                wxT("Colour 8bpp"),
+                wxT("Colour 16bpp"),
+                wxT("Grey 8bpp"),
+                wxT("Grey 16bpp"),
+                wxT("Grey red 8bpp"),
+                wxT("Grey red 16bpp"),
+            };
+
+            int sel = wxGetSingleChoiceIndex(wxT("Set PNG format"),
+                                            wxT("Image sample: save file"),
+                                            WXSIZEOF(pngchoices),
+                                            pngchoices,
+                                            this);
+            if ( sel != -1 )
+            {
+                image.SetOption(wxIMAGE_OPTION_PNG_FORMAT, pngvalues[sel]);
+                image.SetOption(wxIMAGE_OPTION_PNG_BITDEPTH, sel % 2 ? 16 : 8);
+
+                // these values are taken from OptiPNG with -o3 switch
+                const wxString compressionChoices[] =
+                {
+                    wxT("compression = 9, memory = 8, strategy = 0, filter = 0"),
+                    wxT("compression = 9, memory = 9, strategy = 0, filter = 0"),
+                    wxT("compression = 9, memory = 8, strategy = 1, filter = 0"),
+                    wxT("compression = 9, memory = 9, strategy = 1, filter = 0"),
+                    wxT("compression = 1, memory = 8, strategy = 2, filter = 0"),
+                    wxT("compression = 1, memory = 9, strategy = 2, filter = 0"),
+                    wxT("compression = 9, memory = 8, strategy = 0, filter = 5"),
+                    wxT("compression = 9, memory = 9, strategy = 0, filter = 5"),
+                    wxT("compression = 9, memory = 8, strategy = 1, filter = 5"),
+                    wxT("compression = 9, memory = 9, strategy = 1, filter = 5"),
+                    wxT("compression = 1, memory = 8, strategy = 2, filter = 5"),
+                    wxT("compression = 1, memory = 9, strategy = 2, filter = 5"),
+                };
+
+                int sel = wxGetSingleChoiceIndex(wxT("Select compression option (Cancel to use default)\n"),
+                                                 wxT("PNG Compression Options"),
+                                                 WXSIZEOF(compressionChoices),
+                                                 compressionChoices,
+                                                 this);
+                if (sel != -1)
+                {
+                    const int zc[] = {9, 9, 9, 9, 1, 1, 9, 9, 9, 9, 1, 1};
+                    const int zm[] = {8, 9, 8, 9, 8, 9, 8, 9, 8, 9, 8, 9};
+                    const int zs[] = {0, 0, 1, 1, 2, 2, 0, 0, 1, 1, 2, 2};
+                    const int f[]  = {0x08, 0x08, 0x08, 0x08, 0x08, 0x08,
+                                      0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8};
+
+                    image.SetOption(wxIMAGE_OPTION_PNG_COMPRESSION_LEVEL      , zc[sel]);
+                    image.SetOption(wxIMAGE_OPTION_PNG_COMPRESSION_MEM_LEVEL  , zm[sel]);
+                    image.SetOption(wxIMAGE_OPTION_PNG_COMPRESSION_STRATEGY   , zs[sel]);
+                    image.SetOption(wxIMAGE_OPTION_PNG_FILTER                 , f[sel]);
+                    image.SetOption(wxIMAGE_OPTION_PNG_COMPRESSION_BUFFER_SIZE, 1048576); // 1 MB
+                }
+            }
+        }

 #endif // wxUSE_LIBPNG
 #endif // wxUSE_LIBPNG

+        else if ( extension == wxT("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:
+            saved = image.SaveFile(savefilename, wxBITMAP_TYPE_CUR);
+        }
+
+        if ( !saved )
+        {
+            // This one guesses image format from filename extension
+            // (it may fail if the extension is not recognized):
+            image.SaveFile(savefilename);
+        }
+#endif // wxUSE_FILEDLG
+    }

 
 

-#if wxUSE_LIBJPEG
-    image.Destroy();
+    void OnResize(wxCommandEvent& WXUNUSED(event))
+    {
+        wxImage img(m_bitmap.ConvertToImage());

 
 

-    if ( !image.LoadFile( dir + wxString("horse.jpg")) )
-        wxLogError("Can't load JPG image");
-    else
-        my_horse_jpeg = new wxBitmap( image.ConvertToBitmap() );
-#endif // wxUSE_LIBJPEG
+        const wxSize size = GetClientSize();
+        img.Rescale(size.x, size.y, wxIMAGE_QUALITY_HIGH);
+        m_bitmap = wxBitmap(img);

 
 

-#if wxUSE_GIF
-    image.Destroy();
+        UpdateStatusBar();
+    }

 
 

-    if ( !image.LoadFile( dir + wxString("horse.gif")) )
-        wxLogError("Can't load GIF image");
-    else
-        my_horse_gif = new wxBitmap( image.ConvertToBitmap() );
-#endif
+    void OnZoom(wxCommandEvent& event)
+    {
+        if ( event.GetId() == wxID_ZOOM_IN )
+            m_zoom *= 1.2;
+        else if ( event.GetId() == wxID_ZOOM_OUT )
+            m_zoom /= 1.2;
+        else // wxID_ZOOM_100
+            m_zoom = 1.;
+
+        UpdateStatusBar();
+    }

 
 

-#if wxUSE_PCX
-    image.Destroy();
+    void OnRotate(wxCommandEvent& event)
+    {
+        double angle = 5;
+        if ( event.GetId() == ID_ROTATE_LEFT )
+            angle = -angle;

 
 

-    if ( !image.LoadFile( dir + wxString("horse.pcx"), wxBITMAP_TYPE_PCX ) )
-        wxLogError("Can't load PCX image");
-    else
-        my_horse_pcx = new wxBitmap( image.ConvertToBitmap() );
-#endif
+        wxImage img(m_bitmap.ConvertToImage());
+        img = img.Rotate(angle, wxPoint(img.GetWidth() / 2, img.GetHeight() / 2));
+        if ( !img.IsOk() )
+        {
+            wxLogWarning(wxT("Rotation failed"));
+            return;
+        }

 
 

-    image.Destroy();
+        m_bitmap = wxBitmap(img);

 
 

-    if ( !image.LoadFile( dir + wxString("horse.bmp"), wxBITMAP_TYPE_BMP ) )
-        wxLogError("Can't load BMP image");
-    else
-        my_horse_bmp = new wxBitmap( image.ConvertToBitmap() );
+        UpdateStatusBar();
+    }

 
 

-#if wxUSE_PNM
-    image.Destroy();
+    void UpdateStatusBar()
+    {
+        wxLogStatus(this, wxT("Image size: (%d, %d), zoom %.2f"),
+                    m_bitmap.GetWidth(),
+                    m_bitmap.GetHeight(),
+                    m_zoom);
+        Refresh();
+    }

 
 

-    if ( !image.LoadFile( dir + wxString("horse.pnm"), wxBITMAP_TYPE_PNM ) )
-        wxLogError("Can't load PNM image");
-    else
-        my_horse_pnm = new wxBitmap( image.ConvertToBitmap() );
-#endif
+    wxBitmap m_bitmap;
+    double m_zoom;

 
 

-#if wxUSE_LIBTIFF
-    image.Destroy();
+    DECLARE_EVENT_TABLE()
+};

 
 

-    if ( !image.LoadFile( dir + wxString("horse.tif"), wxBITMAP_TYPE_TIF ) )
-        wxLogError("Can't load TIFF image");
-    else
-        my_horse_tiff = new wxBitmap( image.ConvertToBitmap() );
-#endif
+#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, wxID_ANY, wxT("Raw bitmaps (how exciting)")),
+        m_bitmap(SIZE, SIZE, 24),
+        m_alphaBitmap(SIZE, SIZE, 32)
+    {
+        SetClientSize(SIZE, SIZE*2+25);
+
+        InitAlphaBitmap();
+        InitBitmap();
+
+    }
+
+    void InitAlphaBitmap()
+    {
+        // First, clear the whole bitmap by making it alpha
+        {
+            wxAlphaPixelData data( m_alphaBitmap, wxPoint(0,0), wxSize(SIZE, SIZE) );
+            if ( !data )
+            {
+                wxLogError(wxT("Failed to gain raw access to bitmap data"));
+                return;
+            }
+            wxAlphaPixelData::Iterator p(data);
+            for ( int y = 0; y < SIZE; ++y )
+            {
+                wxAlphaPixelData::Iterator rowStart = p;
+                for ( int x = 0; x < SIZE; ++x )
+                {
+                    p.Alpha() = 0;
+                    ++p; // same as p.OffsetX(1)
+                }
+                p = rowStart;
+                p.OffsetY(data, 1);
+            }
+        }
+
+        // Then, draw colourful alpha-blended stripes
+        wxAlphaPixelData data(m_alphaBitmap, wxPoint(BORDER, BORDER),
+                            wxSize(REAL_SIZE, REAL_SIZE));
+        if ( !data )
+        {
+            wxLogError(wxT("Failed to gain raw access to bitmap data"));
+            return;
+        }
+
+        wxAlphaPixelData::Iterator p(data);
+
+        for ( int y = 0; y < REAL_SIZE; ++y )
+        {
+            wxAlphaPixelData::Iterator 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 )
+            {
+                // note that RGB must be premultiplied by alpha
+                unsigned a = (wxAlphaPixelData::Iterator::ChannelType)((x*255.)/REAL_SIZE);
+                p.Red() = r * a / 256;
+                p.Green() = g * a / 256;
+                p.Blue() = b * a / 256;
+                p.Alpha() = a;
+
+                ++p; // same as p.OffsetX(1)
+            }
+
+            p = rowStart;
+            p.OffsetY(data, 1);
+        }
+    }
+
+    void InitBitmap()
+    {
+        // draw some colourful stripes without alpha
+        wxNativePixelData data(m_bitmap);
+        if ( !data )
+        {
+            wxLogError(wxT("Failed to gain raw access to bitmap data"));
+            return;
+        }
+
+        wxNativePixelData::Iterator p(data);
+        for ( int y = 0; y < SIZE; ++y )
+        {
+            wxNativePixelData::Iterator rowStart = p;
+
+            int r = y < SIZE/3 ? 255 : 0,
+                g = (SIZE/3 <= y) && (y < 2*(SIZE/3)) ? 255 : 0,
+                b = 2*(SIZE/3) <= y ? 255 : 0;
+
+            for ( int x = 0; x < SIZE; ++x )
+            {
+                p.Red() = r;
+                p.Green() = g;
+                p.Blue() = b;
+                ++p; // same as p.OffsetX(1)
+            }
+
+            p = rowStart;
+            p.OffsetY(data, 1);
+        }
+    }
+
+    void OnPaint(wxPaintEvent& WXUNUSED(event))
+    {
+        wxPaintDC dc( this );
+        dc.DrawText(wxT("This is alpha and raw bitmap test"), 0, BORDER);
+        dc.DrawText(wxT("This is alpha and raw bitmap test"), 0, SIZE/2 - BORDER);
+        dc.DrawText(wxT("This is alpha and raw bitmap test"), 0, SIZE - 2*BORDER);
+        dc.DrawBitmap( m_alphaBitmap, 0, 0, true /* use mask */ );
+
+        dc.DrawText(wxT("Raw bitmap access without alpha"), 0, SIZE+5);
+        dc.DrawBitmap( m_bitmap, 0, SIZE+5+dc.GetCharHeight());
+    }
+
+private:
+    wxBitmap m_bitmap;
+    wxBitmap m_alphaBitmap;
+
+    DECLARE_EVENT_TABLE()
+};
+
+#endif // wxHAVE_RAW_BITMAP
+
+
+// ============================================================================
+// implementations
+// ============================================================================
+
+//-----------------------------------------------------------------------------
+// MyImageFrame
+//-----------------------------------------------------------------------------
+
+BEGIN_EVENT_TABLE(MyImageFrame, wxFrame)
+    EVT_ERASE_BACKGROUND(MyImageFrame::OnEraseBackground)
+    EVT_PAINT(MyImageFrame::OnPaint)
+
+    EVT_MENU(wxID_SAVEAS, MyImageFrame::OnSave)
+    EVT_MENU_RANGE(ID_ROTATE_LEFT, ID_ROTATE_RIGHT, MyImageFrame::OnRotate)
+    EVT_MENU(ID_RESIZE, MyImageFrame::OnResize)
+
+    EVT_MENU(wxID_ZOOM_IN, MyImageFrame::OnZoom)
+    EVT_MENU(wxID_ZOOM_OUT, MyImageFrame::OnZoom)
+    EVT_MENU(wxID_ZOOM_100, MyImageFrame::OnZoom)
+END_EVENT_TABLE()
+
+//-----------------------------------------------------------------------------
+// MyRawBitmapFrame
+//-----------------------------------------------------------------------------
+
+#ifdef wxHAVE_RAW_BITMAP
+
+BEGIN_EVENT_TABLE(MyRawBitmapFrame, wxFrame)
+    EVT_PAINT(MyRawBitmapFrame::OnPaint)
+END_EVENT_TABLE()
+
+#endif // wxHAVE_RAW_BITMAP

 
 

-    CreateAntiAliasedBitmap();
+//-----------------------------------------------------------------------------
+// MyFrame
+//-----------------------------------------------------------------------------

 
 

-    my_smile_xbm = new wxBitmap( (const char*)smile_bits, smile_width,
-                                 smile_height, 1 );
+enum
+{
+    ID_QUIT  = wxID_EXIT,
+    ID_ABOUT = wxID_ABOUT,
+    ID_NEW = 100,
+    ID_INFO,
+    ID_SHOWRAW,
+    ID_GRAPHICS,
+    ID_SHOWTHUMBNAIL
+};

 
 

-#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);
+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)
+    EVT_MENU    (ID_INFO,  MyFrame::OnImageInfo)
+    EVT_MENU    (ID_SHOWTHUMBNAIL, MyFrame::OnThumbnail)
+#ifdef wxHAVE_RAW_BITMAP
+    EVT_MENU    (ID_SHOWRAW, MyFrame::OnTestRawBitmap)

 #endif
 #endif

+#if wxUSE_GRAPHICS_CONTEXT
+    EVT_MENU    (ID_GRAPHICS, MyFrame::OnTestGraphics)
+#endif // wxUSE_GRAPHICS_CONTEXT
+#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, wxID_ANY, wxT("wxImage sample"),
+                wxPoint(20, 20), wxSize(950, 700) )
+{
+    SetIcon(wxICON(sample));
+
+    wxMenuBar *menu_bar = new wxMenuBar();
+
+    wxMenu *menuImage = new wxMenu;
+    menuImage->Append( ID_NEW, wxT("&Show any image...\tCtrl-O"));
+    menuImage->Append( ID_INFO, wxT("Show image &information...\tCtrl-I"));
+#ifdef wxHAVE_RAW_BITMAP
+    menuImage->AppendSeparator();
+    menuImage->Append( ID_SHOWRAW, wxT("Test &raw bitmap...\tCtrl-R"));

 #endif
 #endif

+#if wxUSE_GRAPHICS_CONTEXT
+    menuImage->AppendSeparator();
+    menuImage->Append(ID_GRAPHICS, "Test &graphics context...\tCtrl-G");
+#endif // wxUSE_GRAPHICS_CONTEXT
+    menuImage->AppendSeparator();
+    menuImage->Append( ID_SHOWTHUMBNAIL, wxT("Test &thumbnail...\tCtrl-T"),
+                        "Test scaling the image during load (try with JPEG)");
+    menuImage->AppendSeparator();
+    menuImage->Append( ID_ABOUT, wxT("&About\tF1"));
+    menuImage->AppendSeparator();
+    menuImage->Append( ID_QUIT, wxT("E&xit\tCtrl-Q"));
+    menu_bar->Append(menuImage, wxT("&Image"));
+
+#if wxUSE_CLIPBOARD
+    wxMenu *menuClipboard = new wxMenu;
+    menuClipboard->Append(wxID_COPY, wxT("&Copy test image\tCtrl-C"));
+    menuClipboard->Append(wxID_PASTE, wxT("&Paste image\tCtrl-V"));
+    menu_bar->Append(menuClipboard, wxT("&Clipboard"));
+#endif // wxUSE_CLIPBOARD
+
+    SetMenuBar( menu_bar );
+
+#if wxUSE_STATUSBAR
+    CreateStatusBar(2);
+    int widths[] = { -1, 100 };
+    SetStatusWidths( 2, widths );
+#endif // wxUSE_STATUSBAR
+
+    m_canvas = new MyCanvas( this, wxID_ANY, wxPoint(0,0), wxSize(10,10) );
+
+    // 500 width * 2750 height
+    m_canvas->SetScrollbars( 10, 10, 50, 275 );
+    m_canvas->SetCursor(wxImage("cursor.png"));

 }
 
 }
 

-MyCanvas::~MyCanvas()
+void MyFrame::OnQuit( wxCommandEvent &WXUNUSED(event) )

 {
 {

-    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_smile_xbm;
-    delete my_square;
-    delete my_anti;
+    Close( true );

 }
 
 }
 

-void MyCanvas::OnPaint( wxPaintEvent &WXUNUSED(event) )
+#if wxUSE_ZLIB && wxUSE_STREAMS
+#include "wx/zstream.h"
+#endif
+
+void MyFrame::OnAbout( wxCommandEvent &WXUNUSED(event) )

 {
 {

-    wxPaintDC dc( this );
-    PrepareDC( dc );
+    wxArrayString array;

 
 

-    dc.DrawText( "Loaded image", 30, 10 );
-    if (my_square && my_square->Ok()) dc.DrawBitmap( *my_square, 30, 30 );
+    array.Add("wxImage demo");
+    array.Add("(c) Robert Roebling 1998-2005");
+    array.Add("(c) Vadim Zeitlin 2005-2009");

 
 

-    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 );
+    array.Add(wxEmptyString);
+    array.Add("Version of the libraries used:");

 
 

-    if (my_anti && my_anti->Ok())
-        dc.DrawBitmap( *my_anti, 280, 30 );
+#if wxUSE_LIBPNG
+    array.Add(wxPNGHandler::GetLibraryVersionInfo().ToString());
+#endif
+#if wxUSE_LIBJPEG
+    array.Add(wxJPEGHandler::GetLibraryVersionInfo().ToString());
+#endif
+#if wxUSE_LIBTIFF
+    array.Add(wxTIFFHandler::GetLibraryVersionInfo().ToString());
+#endif
+#if wxUSE_ZLIB && wxUSE_STREAMS
+    // zlib is used by libpng
+    array.Add(wxGetZlibVersionInfo().ToString());
+#endif
+    (void)wxMessageBox( wxJoin(array, '\n'),
+                        "About wxImage Demo",
+                        wxICON_INFORMATION | wxOK );
+}
+
+wxString MyFrame::LoadUserImage(wxImage& image)
+{
+    wxString filename;

 
 

-    dc.DrawText( "PNG handler", 30, 135 );
-    if (my_horse_png && my_horse_png->Ok())
+#if wxUSE_FILEDLG
+    filename = wxLoadFileSelector(wxT("image"), wxEmptyString);
+    if ( !filename.empty() )

     {
     {

-        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 );
-    }
+        if ( !image.LoadFile(filename) )
+        {
+            wxLogError(wxT("Couldn't load image from '%s'."), filename.c_str());

 
 

-    dc.DrawText( "JPEG handler", 30, 365 );
-    if (my_horse_jpeg && my_horse_jpeg->Ok())
-        dc.DrawBitmap( *my_horse_jpeg, 30, 380 );
+            return wxEmptyString;
+        }
+    }
+#endif // wxUSE_FILEDLG

 
 

-    dc.DrawText( "GIF handler", 30, 595 );
-    if (my_horse_gif && my_horse_gif->Ok())
-        dc.DrawBitmap( *my_horse_gif, 30, 610 );
+    return filename;
+}

 
 

-    dc.DrawText( "PCX handler", 30, 825 );
-    if (my_horse_pcx && my_horse_pcx->Ok())
-        dc.DrawBitmap( *my_horse_pcx, 30, 840 );
+void MyFrame::OnNewFrame( wxCommandEvent &WXUNUSED(event) )
+{
+    wxImage image;
+    wxString filename = LoadUserImage(image);
+    if ( !filename.empty() )
+        new MyImageFrame(this, filename, image);
+}

 
 

-    dc.DrawText( "BMP handler", 30, 1055 );
-    if (my_horse_bmp && my_horse_bmp->Ok())
-        dc.DrawBitmap( *my_horse_bmp, 30, 1070 );
+void MyFrame::OnImageInfo( wxCommandEvent &WXUNUSED(event) )
+{
+    wxImage image;
+    if ( !LoadUserImage(image).empty() )
+    {
+        // TODO: show more information about the file
+        wxString info = wxString::Format("Image size: %dx%d",
+                                        image.GetWidth(),
+                                        image.GetHeight());
+
+        int xres = image.GetOptionInt(wxIMAGE_OPTION_RESOLUTIONX),
+            yres = image.GetOptionInt(wxIMAGE_OPTION_RESOLUTIONY);
+        if ( xres || yres )
+        {
+            info += wxString::Format("\nResolution: %dx%d", xres, yres);
+            switch ( image.GetOptionInt(wxIMAGE_OPTION_RESOLUTIONUNIT) )
+            {
+                default:
+                    wxFAIL_MSG( "unknown image resolution units" );
+                    // fall through
+
+                case wxIMAGE_RESOLUTION_NONE:
+                    info += " in default units";
+                    break;
+
+                case wxIMAGE_RESOLUTION_INCHES:
+                    info += " in";
+                    break;
+
+                case wxIMAGE_RESOLUTION_CM:
+                    info += " cm";
+                    break;
+            }
+        }
+
+        wxLogMessage("%s", info);
+    }
+}

 
 

-    dc.DrawText( "PNM handler", 30, 1285 );
-    if (my_horse_pnm && my_horse_pnm->Ok())
-        dc.DrawBitmap( *my_horse_pnm, 30, 1300 );
+#ifdef wxHAVE_RAW_BITMAP

 
 

-    dc.DrawText( "TIFF handler", 30, 1515 );
-    if (my_horse_tiff && my_horse_tiff->Ok())
-        dc.DrawBitmap( *my_horse_tiff, 30, 1530 );
+void MyFrame::OnTestRawBitmap( wxCommandEvent &WXUNUSED(event) )
+{
+    (new MyRawBitmapFrame(this))->Show();
+}

 
 

-    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 );
-        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" );
-    }
+#endif // wxHAVE_RAW_BITMAP

 
 

+#if wxUSE_GRAPHICS_CONTEXT

 
 

-    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())
+class MyGraphicsFrame : public wxFrame
+{
+public:
+    enum

     {
     {

-        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 );
-        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" );
-    }
+        WIDTH = 256,
+        HEIGHT = 90
+    };

 
 

-    dc.DrawText("XPM bitmap", 30, 2000);
-    if ( m_bmpSmileXpm.Ok() )
+    MyGraphicsFrame(wxWindow* parent) :
+        wxFrame(parent, wxID_ANY, "Graphics context test"),
+        m_image(WIDTH, HEIGHT, false)

     {
     {

-        dc.DrawBitmap(m_bmpSmileXpm, 30, 2020, TRUE);
+        // Create a test image: it has 3 horizontal primary colour bands with
+        // alpha increasing from left to right.
+        m_image.SetAlpha();
+        unsigned char* alpha = m_image.GetAlpha();
+        unsigned char* data = m_image.GetData();
+
+        for ( int y = 0; y < HEIGHT; y++ )
+        {
+            unsigned char r = 0,
+                          g = 0,
+                          b = 0;
+            if ( y < HEIGHT/3 )
+                r = 0xff;
+            else if ( y < (2*HEIGHT)/3 )
+                g = 0xff;
+            else
+                b = 0xff;
+
+            for ( int x = 0; x < WIDTH; x++ )
+            {
+                *alpha++ = x;
+                *data++ = r;
+                *data++ = g;
+                *data++ = b;
+            }
+        }
+
+        m_bitmap = wxBitmap(m_image);
+
+        Connect(wxEVT_PAINT, wxPaintEventHandler(MyGraphicsFrame::OnPaint));
+
+        Show();

     }
 
     }
 

-    dc.DrawText("XPM icon", 150, 2000);
-    if ( m_iconSmileXpm.Ok() )
+private:
+    void OnPaint(wxPaintEvent& WXUNUSED(event))

     {
     {

-        dc.DrawIcon(m_iconSmileXpm, 150, 2020);
+        wxPaintDC dc(this);
+        wxScopedPtr<wxGraphicsContext> gc(wxGraphicsContext::Create(dc));
+        wxGraphicsBitmap gb(gc->CreateBitmapFromImage(m_image));
+
+        gc->SetFont(*wxNORMAL_FONT, *wxBLACK);
+        gc->DrawText("Bitmap", 0, HEIGHT/2);
+        gc->DrawBitmap(m_bitmap, 0, 0, WIDTH, HEIGHT);
+
+        wxGraphicsFont gf = gc->CreateFont(wxNORMAL_FONT->GetPixelSize().y, "");
+        gc->SetFont(gf);
+        gc->DrawText("Graphics bitmap", 0, (3*HEIGHT)/2);
+        gc->DrawBitmap(gb, 0, HEIGHT, WIDTH, HEIGHT);

     }
     }

-}
-
-void MyCanvas::CreateAntiAliasedBitmap()
-{
-  wxBitmap bitmap( 300, 300 );

 
 

-  wxMemoryDC dc;
+    wxImage m_image;
+    wxBitmap m_bitmap;

 
 

-  dc.SelectObject( bitmap );
+    wxDECLARE_NO_COPY_CLASS(MyGraphicsFrame);
+};

 
 

-  dc.Clear();
+void MyFrame::OnTestGraphics(wxCommandEvent& WXUNUSED(event))
+{
+    new MyGraphicsFrame(this);
+}

 
 

-  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 );
+#endif // wxUSE_GRAPHICS_CONTEXT

 
 

-  dc.SetBrush( *wxRED_BRUSH );
-  dc.SetPen( *wxTRANSPARENT_PEN );
-  dc.DrawRoundedRectangle( 20, 100, 200, 180, 20 );
+#if wxUSE_CLIPBOARD

 
 

-  wxImage original( bitmap );
-  wxImage anti( 150, 150 );
+void MyFrame::OnCopy(wxCommandEvent& WXUNUSED(event))
+{
+    wxBitmapDataObject *dobjBmp = new wxBitmapDataObject;
+    dobjBmp->SetBitmap(m_canvas->my_horse_png);

 
 

-  /* This is quite slow, but safe. Use wxImage::GetData() for speed instead. */
+    wxTheClipboard->Open();

 
 

-  for (int y = 1; y < 149; y++)
-    for (int x = 1; x < 149; x++)
+    if ( !wxTheClipboard->SetData(dobjBmp) )

     {
     {

-       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 );
+        wxLogError(wxT("Failed to copy bitmap to clipboard"));

     }
     }

-  my_anti = new wxBitmap( anti.ConvertToBitmap() );
-}

 
 

-// MyFrame
+    wxTheClipboard->Close();
+}

 
 

-const int ID_QUIT  = 108;
-const int ID_ABOUT = 109;
+void MyFrame::OnPaste(wxCommandEvent& WXUNUSED(event))
+{
+    wxBitmapDataObject dobjBmp;

 
 

-IMPLEMENT_DYNAMIC_CLASS( MyFrame, wxFrame )
+    wxTheClipboard->Open();
+    if ( !wxTheClipboard->GetData(dobjBmp) )
+    {
+        wxLogMessage(wxT("No bitmap data in the clipboard"));
+    }
+    else
+    {
+        new MyImageFrame(this, wxT("Clipboard"), dobjBmp.GetBitmap());
+    }
+    wxTheClipboard->Close();
+}

 
 

-BEGIN_EVENT_TABLE(MyFrame,wxFrame)
-  EVT_MENU    (ID_ABOUT, MyFrame::OnAbout)
-  EVT_MENU    (ID_QUIT,  MyFrame::OnQuit)
-END_EVENT_TABLE()
+#endif // wxUSE_CLIPBOARD

 
 

-MyFrame::MyFrame()
-       : wxFrame( (wxFrame *)NULL, -1, "wxImage sample",
-                  wxPoint(20,20), wxSize(470,360) )
+void MyFrame::OnThumbnail( wxCommandEvent &WXUNUSED(event) )

 {
 {

-  wxMenu *file_menu = new wxMenu();
-  file_menu->Append( ID_ABOUT, "&About...");
-  file_menu->Append( ID_QUIT, "E&xit");
-
-  wxMenuBar *menu_bar = new wxMenuBar();
-  menu_bar->Append(file_menu, "&File");
+#if wxUSE_FILEDLG
+    wxString filename = wxLoadFileSelector(wxT("image"), wxEmptyString, wxEmptyString, this);
+    if ( filename.empty() )
+        return;

 
 

-  SetMenuBar( menu_bar );
+    static const int THUMBNAIL_WIDTH = 320;
+    static const int THUMBNAIL_HEIGHT = 240;

 
 

-  CreateStatusBar(2);
-  int widths[] = { -1, 100 };
-  SetStatusWidths( 2, widths );
+    wxImage image;
+    image.SetOption(wxIMAGE_OPTION_MAX_WIDTH, THUMBNAIL_WIDTH);
+    image.SetOption(wxIMAGE_OPTION_MAX_HEIGHT, THUMBNAIL_HEIGHT);

 
 

-  m_canvas = new MyCanvas( this, -1, wxPoint(0,0), wxSize(10,10) );
+    wxStopWatch sw;
+    if ( !image.LoadFile(filename) )
+    {
+        wxLogError(wxT("Couldn't load image from '%s'."), filename.c_str());
+        return;
+    }

 
 

-  // 500 width * 2100 height
-  m_canvas->SetScrollbars( 10, 10, 50, 220 );
-}
+    int origWidth = image.GetOptionInt( wxIMAGE_OPTION_ORIGINAL_WIDTH );
+    int origHeight = image.GetOptionInt( wxIMAGE_OPTION_ORIGINAL_HEIGHT );

 
 

-void MyFrame::OnQuit( wxCommandEvent &WXUNUSED(event) )
-{
-  Close( TRUE );
-}
+    const long loadTime = sw.Time();

 
 

-void MyFrame::OnAbout( wxCommandEvent &WXUNUSED(event) )
-{
-  (void)wxMessageBox( "wxImage demo\n"
-                      "Robert Roebling (c) 1998,2000",
-                      "About wxImage Demo", wxICON_INFORMATION | wxOK );
+    MyImageFrame * const frame = new MyImageFrame(this, filename, image);
+    wxLogStatus(frame, "Loaded \"%s\" in %ldms; original size was (%d, %d)",
+                filename, loadTime, origWidth, origHeight);
+#else
+    wxLogError( wxT("Couldn't create file selector dialog") );
+    return;
+#endif // wxUSE_FILEDLG

 }
 
 //-----------------------------------------------------------------------------
 // MyApp
 //-----------------------------------------------------------------------------
 
 }
 
 //-----------------------------------------------------------------------------
 // MyApp
 //-----------------------------------------------------------------------------
 

+IMPLEMENT_APP(MyApp)
+

 bool MyApp::OnInit()
 {
 bool MyApp::OnInit()
 {

-#if wxUSE_LIBPNG
-  wxImage::AddHandler( new wxPNGHandler );
-#endif
+    if ( !wxApp::OnInit() )
+        return false;

 
 

-#if wxUSE_LIBJPEG
-  wxImage::AddHandler( new wxJPEGHandler );
-#endif
+    wxInitAllImageHandlers();

 
 

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

 
 

-  return TRUE;
+    return true;

 }
 }

-