X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/408b4168c84f8af6931010e1fb5c7b7aebed43e6..d0a0c6e36aeebdd7a43b1374af8ea63d24217512:/samples/image/image.cpp diff --git a/samples/image/image.cpp b/samples/image/image.cpp index 0684031d57..63b414cd6e 100644 --- a/samples/image/image.cpp +++ b/samples/image/image.cpp @@ -1,11 +1,13 @@ -/* - * 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 +// License: wxWindows licence +/////////////////////////////////////////////////////////////////////////////// // For compilers that support precompilation, includes "wx/wx.h". #include "wx/wxprec.h" @@ -15,48 +17,53 @@ #endif #ifndef WX_PRECOMP -#include "wx/wx.h" + #include "wx/wx.h" #endif #include "wx/image.h" - #include "wx/file.h" +#include "wx/filename.h" +#include "wx/mstream.h" +#include "wx/wfstream.h" +#include "wx/quantize.h" +#include "wx/stopwatch.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 -#include "smile.xbm" +#if defined(__WXMAC__) || defined(__WXGTK__) + #define wxHAVE_RAW_BITMAP + #include "wx/rawbmp.h" +#endif -// derived classes +#include "canvas.h" -class MyFrame; -class MyApp; -// MyCanvas +// ============================================================================ +// declarations +// ============================================================================ + +//----------------------------------------------------------------------------- +// MyApp +//----------------------------------------------------------------------------- -class MyCanvas: public wxScrolledWindow +class MyApp: public wxApp { 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; - -private: - DECLARE_DYNAMIC_CLASS(MyCanvas) - DECLARE_EVENT_TABLE() + virtual bool OnInit(); }; +// ---------------------------------------------------------------------------- // MyFrame +// ---------------------------------------------------------------------------- class MyFrame: public wxFrame { @@ -64,370 +71,720 @@ public: 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 void OnQuit( wxCommandEvent &event ); +#if wxUSE_CLIPBOARD + void OnCopy(wxCommandEvent& event); + void OnPaste(wxCommandEvent& event); +#endif // wxUSE_CLIPBOARD + 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() }; -// 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 wxBitmap& bitmap) + : wxFrame(parent, wxID_ANY, + wxString::Format(_T("Image from %s"), desc.c_str()), + wxDefaultPosition, wxDefaultSize, + wxDEFAULT_FRAME_STYLE | wxFULL_REPAINT_ON_RESIZE), + m_bitmap(bitmap) + { + wxMenu *menu = new wxMenu; + menu->Append(wxID_SAVE); + menu->AppendSeparator(); + m_pClearBgMenu = menu->AppendCheckItem(ID_PAINT_BG, _T("&Paint background")); + menu->AppendSeparator(); + menu->Append(ID_RESIZE, _T("&Fit to window\tCtrl-F")); + menu->AppendSeparator(); + menu->Append(ID_ROTATE_LEFT, _T("Rotate &left\tCtrl-L")); + menu->Append(ID_ROTATE_RIGHT, _T("Rotate &right\tCtrl-R")); -IMPLEMENT_APP(MyApp) + wxMenuBar *mbar = new wxMenuBar; + mbar->Append(menu, _T("&Image")); + SetMenuBar(mbar); -// MyCanvas + CreateStatusBar(); -IMPLEMENT_DYNAMIC_CLASS(MyCanvas, wxScrolledWindow) + SetClientSize(bitmap.GetWidth(), bitmap.GetHeight()); -BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow) - EVT_PAINT(MyCanvas::OnPaint) -END_EVENT_TABLE() + UpdateStatusBar(); -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_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 '..'!"); +// SetBackgroundColour(*wxWHITE); + } - wxImage image( bitmap ); + void OnEraseBackground(wxEraseEvent& WXUNUSED(event)) + { + // do nothing here to be able to see how transparent images are shown + } - if ( !image.SaveFile( dir + wxString("test.png"), wxBITMAP_TYPE_PNG ) ) - wxLogError("Can't save file"); + void OnPaint(wxPaintEvent& WXUNUSED(event)) + { + wxPaintDC dc(this); - if ( !image.LoadFile( dir + wxString("horse.png"), wxBITMAP_TYPE_PNG ) ) - wxLogError("Can't load PNG image"); - else - my_horse_png = new wxBitmap( image.ConvertToBitmap() ); + if (m_pClearBgMenu->IsChecked()) + ClearBackground(); - if ( !image.LoadFile( dir + wxString("horse.jpg") ) ) - wxLogError("Can't load JPG image"); - else - my_horse_jpeg = new wxBitmap( image.ConvertToBitmap() ); + const wxSize size = GetClientSize(); + dc.DrawBitmap(m_bitmap, + (size.x - m_bitmap.GetWidth())/2, + (size.y - m_bitmap.GetHeight())/2, + true /* use mask */); + } -#if wxUSE_GIF - if ( !image.LoadFile( dir + wxString("horse.gif") ) ) - wxLogError("Can't load GIF image"); - else - my_horse_gif = new wxBitmap( image.ConvertToBitmap() ); -#endif + void OnSave(wxCommandEvent& WXUNUSED(event)) + { +#if wxUSE_FILEDLG + wxImage image = m_bitmap.ConvertToImage(); + + wxString savefilename = wxFileSelector( wxT("Save Image"), + wxEmptyString, + wxEmptyString, + (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"), + wxFD_SAVE, + this); + + if ( savefilename.empty() ) + return; + + wxString extension; + wxFileName::SplitPath(savefilename, NULL, NULL, &extension); + + bool saved = false; + if ( extension == _T("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[] = + { + _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") + }; + + int bppselection = wxGetSingleChoiceIndex(_T("Set BMP BPP"), + _T("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; + } + } + } + else if ( extension == _T("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[] = + { + _T("Colour 8bpp"), + _T("Colour 16bpp"), + _T("Grey 8bpp"), + _T("Grey 16bpp"), + _T("Grey red 8bpp"), + _T("Grey red 16bpp"), + }; + + int sel = wxGetSingleChoiceIndex(_T("Set PNG format"), + _T("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[] = + { + _T("compression = 9, memory = 8, strategy = 0, filter = 0"), + _T("compression = 9, memory = 9, strategy = 0, filter = 0"), + _T("compression = 9, memory = 8, strategy = 1, filter = 0"), + _T("compression = 9, memory = 9, strategy = 1, filter = 0"), + _T("compression = 1, memory = 8, strategy = 2, filter = 0"), + _T("compression = 1, memory = 9, strategy = 2, filter = 0"), + _T("compression = 9, memory = 8, strategy = 0, filter = 5"), + _T("compression = 9, memory = 9, strategy = 0, filter = 5"), + _T("compression = 9, memory = 8, strategy = 1, filter = 5"), + _T("compression = 9, memory = 9, strategy = 1, filter = 5"), + _T("compression = 1, memory = 8, strategy = 2, filter = 5"), + _T("compression = 1, memory = 9, strategy = 2, filter = 5"), + }; + + int sel = wxGetSingleChoiceIndex(_T("Select compression option (Cancel to use default)\n"), + _T("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 + } + } + } + else 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: + 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_PCX - 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 + void OnResize(wxCommandEvent& WXUNUSED(event)) + { + wxImage img(m_bitmap.ConvertToImage()); - if ( !image.LoadFile( dir + wxString("horse.bmp"), wxBITMAP_TYPE_BMP ) ) - wxLogError("Can't load BMP image"); - else - my_horse_bmp = new wxBitmap( image.ConvertToBitmap() ); + const wxSize size = GetClientSize(); + img.Rescale(size.x, size.y, wxIMAGE_QUALITY_HIGH); + m_bitmap = wxBitmap(img); -#if wxUSE_PNM - 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 + UpdateStatusBar(); + Refresh(); + } -#if wxUSE_LIBTIFF - 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 + void OnRotate(wxCommandEvent& event) + { + double angle = 5; + if ( event.GetId() == ID_ROTATE_LEFT ) + angle = -angle; + + wxImage img(m_bitmap.ConvertToImage()); + img = img.Rotate(angle, wxPoint(img.GetWidth() / 2, img.GetHeight() / 2)); + if ( !img.Ok() ) + { + wxLogWarning(_T("Rotation failed")); + return; + } + + m_bitmap = wxBitmap(img); + + UpdateStatusBar(); + Refresh(); + } - image.LoadFile( dir + wxString("test.png") ); - my_square = new wxBitmap( image.ConvertToBitmap() ); +private: + void UpdateStatusBar() + { + wxLogStatus(this, _T("Image size: (%d, %d)"), + m_bitmap.GetWidth(), + m_bitmap.GetHeight()); + } - CreateAntiAliasedBitmap(); + wxBitmap m_bitmap; + wxMenuItem* m_pClearBgMenu; - my_smile_xbm = new wxBitmap( (const char*)smile_bits, smile_width, - smile_height, 1 ); -} + DECLARE_EVENT_TABLE() +}; -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_pcx; - delete my_horse_tiff; - delete my_smile_xbm; - delete my_square; - delete my_anti; -} +#ifdef wxHAVE_RAW_BITMAP -void MyCanvas::OnPaint( wxPaintEvent &WXUNUSED(event) ) +#include "wx/rawbmp.h" + +class MyRawBitmapFrame : public wxFrame { - wxPaintDC dc( this ); - PrepareDC( dc ); +public: + enum + { + BORDER = 15, + SIZE = 150, + REAL_SIZE = SIZE - 2*BORDER + }; + + MyRawBitmapFrame(wxFrame *parent) + : wxFrame(parent, wxID_ANY, _T("Raw bitmaps (how exciting)")), + m_bitmap(SIZE, SIZE, 24), + m_alphaBitmap(SIZE, SIZE, 32) + { + SetClientSize(SIZE, SIZE*2+25); - dc.DrawText( "Loaded image", 30, 10 ); - if (my_square && my_square->Ok()) dc.DrawBitmap( *my_square, 30, 30 ); + InitAlphaBitmap(); + InitBitmap(); - 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 ); + void InitAlphaBitmap() + { + // First, clear the whole bitmap by making it alpha + { + wxAlphaPixelData data( m_alphaBitmap, wxPoint(0,0), wxSize(SIZE, SIZE) ); + if ( !data ) + { + wxLogError(_T("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(_T("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); + } + } - dc.DrawText( "PNG handler", 30, 135 ); - if (my_horse_png && my_horse_png->Ok()) + void InitBitmap() { - 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 ); + // draw some colourful stripes without alpha + wxNativePixelData data(m_bitmap); + if ( !data ) + { + wxLogError(_T("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); + } } - dc.DrawText( "JPEG handler", 30, 365 ); - if (my_horse_jpeg && my_horse_jpeg->Ok()) - dc.DrawBitmap( *my_horse_jpeg, 30, 380 ); + 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_alphaBitmap, 0, 0, true /* use mask */ ); + + dc.DrawText(_T("Raw bitmap access without alpha"), 0, SIZE+5); + dc.DrawBitmap( m_bitmap, 0, SIZE+5+dc.GetCharHeight()); + } - dc.DrawText( "GIF handler", 30, 595 ); - if (my_horse_gif && my_horse_gif->Ok()) - dc.DrawBitmap( *my_horse_gif, 30, 610 ); +private: + wxBitmap m_bitmap; + wxBitmap m_alphaBitmap; - dc.DrawText( "PCX handler", 30, 825 ); - if (my_horse_pcx && my_horse_pcx->Ok()) - dc.DrawBitmap( *my_horse_pcx, 30, 840 ); + DECLARE_EVENT_TABLE() +}; - dc.DrawText( "BMP handler", 30, 1055 ); - if (my_horse_bmp && my_horse_bmp->Ok()) - dc.DrawBitmap( *my_horse_bmp, 30, 1070 ); +#endif // wxHAVE_RAW_BITMAP - 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 ); +// ============================================================================ +// implementations +// ============================================================================ - if (my_smile_xbm && my_smile_xbm->Ok()) - { - dc.DrawText( "XBM bitmap", 30, 1745 ); - dc.SetTextForeground( "RED" ); - dc.SetTextBackground( "GREEN" ); - dc.DrawBitmap( *my_smile_xbm, 30, 1760 ); - - dc.DrawText( "After wxImage conversion", 150, 1745 ); - wxImage i( *my_smile_xbm ); - i.SetMaskColour( 0,0,0 ); - i.Replace( 255,255,255, - wxRED_PEN->GetColour().Red(), - wxRED_PEN->GetColour().Green(), - wxRED_PEN->GetColour().Blue() ); - dc.DrawBitmap( i.ConvertToBitmap(), 150, 1760, TRUE ); - } - dc.SetTextForeground( "BLACK" ); - - wxBitmap mono( 30,30,1 ); - wxMemoryDC memdc; - memdc.SelectObject( mono ); - memdc.SetPen( *wxTRANSPARENT_PEN ); - memdc.SetBrush( *wxBLACK_BRUSH ); - memdc.DrawRectangle( 0,0,30,30 ); - memdc.SetBrush( *wxWHITE_BRUSH ); - memdc.DrawRectangle( 5,5,20,20 ); - memdc.SelectObject( wxNullBitmap ); - if (mono.Ok()) - { - dc.DrawText( "Mono bitmap", 30, 1845 ); - dc.SetTextForeground( "RED" ); - dc.SetTextBackground( "GREEN" ); - dc.DrawBitmap( mono, 30, 1860 ); - - dc.DrawText( "After wxImage conversion", 150, 1845 ); - 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, 1860, TRUE ); - } -} +//----------------------------------------------------------------------------- +// MyImageFrame +//----------------------------------------------------------------------------- -void MyCanvas::CreateAntiAliasedBitmap() -{ - wxBitmap bitmap( 300, 300 ); +BEGIN_EVENT_TABLE(MyImageFrame, wxFrame) + EVT_ERASE_BACKGROUND(MyImageFrame::OnEraseBackground) + EVT_PAINT(MyImageFrame::OnPaint) + + EVT_MENU(wxID_SAVE, MyImageFrame::OnSave) + EVT_MENU_RANGE(ID_ROTATE_LEFT, ID_ROTATE_RIGHT, MyImageFrame::OnRotate) + EVT_MENU(ID_RESIZE, MyImageFrame::OnResize) +END_EVENT_TABLE() + +//----------------------------------------------------------------------------- +// MyRawBitmapFrame +//----------------------------------------------------------------------------- - wxMemoryDC dc; +#ifdef wxHAVE_RAW_BITMAP - dc.SelectObject( bitmap ); +BEGIN_EVENT_TABLE(MyRawBitmapFrame, wxFrame) + EVT_PAINT(MyRawBitmapFrame::OnPaint) +END_EVENT_TABLE() - dc.Clear(); +#endif // wxHAVE_RAW_BITMAP - 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 ); +//----------------------------------------------------------------------------- +// MyFrame +//----------------------------------------------------------------------------- + +enum +{ + ID_QUIT = wxID_EXIT, + ID_ABOUT = wxID_ABOUT, + ID_NEW = 100, + ID_INFO, + ID_SHOWRAW, + ID_SHOWTHUMBNAIL +}; + +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 +#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, _T("wxImage sample"), + wxPoint(20, 20), wxSize(950, 700) ) +{ + wxMenuBar *menu_bar = new wxMenuBar(); + + wxMenu *menuImage = new wxMenu; + menuImage->Append( ID_NEW, _T("&Show any image...\tCtrl-O")); + menuImage->Append( ID_INFO, _T("Show image &information...\tCtrl-I")); +#ifdef wxHAVE_RAW_BITMAP + menuImage->AppendSeparator(); + menuImage->Append( ID_SHOWRAW, _T("Test &raw bitmap...\tCtrl-R")); +#endif + menuImage->AppendSeparator(); + menuImage->Append( ID_SHOWTHUMBNAIL, _T("Test &thumbnail...\tCtrl-T"), + "Test scaling the image during load (try with JPEG)"); + 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 ); + +#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 ); +} - dc.SetBrush( *wxRED_BRUSH ); - dc.SetPen( *wxTRANSPARENT_PEN ); - dc.DrawRoundedRectangle( 20, 100, 200, 180, 20 ); +void MyFrame::OnQuit( wxCommandEvent &WXUNUSED(event) ) +{ + Close( true ); +} - wxImage original( bitmap ); - wxImage anti( 150, 150 ); +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 ); +} - /* This is quite slow, but safe. Use wxImage::GetData() for speed instead. */ +wxString MyFrame::LoadUserImage(wxImage& image) +{ + wxString filename; - for (int y = 1; y < 149; y++) - for (int x = 1; x < 149; x++) +#if wxUSE_FILEDLG + filename = wxFileSelector(_T("Select image file")); + if ( !filename.empty() ) { - 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 ); + if ( !image.LoadFile(filename) ) + { + wxLogError(_T("Couldn't load image from '%s'."), filename.c_str()); + + return wxEmptyString; + } } - my_anti = new wxBitmap( anti.ConvertToBitmap() ); -} +#endif // wxUSE_FILEDLG -// MyFrame + return filename; +} -const int ID_QUIT = 108; -const int ID_ABOUT = 109; +void MyFrame::OnNewFrame( wxCommandEvent &WXUNUSED(event) ) +{ + wxImage image; + wxString filename = LoadUserImage(image); + if ( !filename.empty() ) + (new MyImageFrame(this, filename, wxBitmap(image)))->Show(); +} -IMPLEMENT_DYNAMIC_CLASS( MyFrame, wxFrame ) +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); + } +} -BEGIN_EVENT_TABLE(MyFrame,wxFrame) - EVT_MENU (ID_ABOUT, MyFrame::OnAbout) - EVT_MENU (ID_QUIT, MyFrame::OnQuit) -END_EVENT_TABLE() +#ifdef wxHAVE_RAW_BITMAP -MyFrame::MyFrame() - : wxFrame( (wxFrame *)NULL, -1, "wxImage sample", - wxPoint(20,20), wxSize(470,360) ) +void MyFrame::OnTestRawBitmap( wxCommandEvent &WXUNUSED(event) ) { - wxMenu *file_menu = new wxMenu(); - file_menu->Append( ID_ABOUT, "&About.."); - file_menu->Append( ID_QUIT, "E&xit"); + (new MyRawBitmapFrame(this))->Show(); +} - wxMenuBar *menu_bar = new wxMenuBar(); - menu_bar->Append(file_menu, "&File"); +#endif // wxHAVE_RAW_BITMAP - SetMenuBar( menu_bar ); +#if wxUSE_CLIPBOARD - CreateStatusBar(2); - int widths[] = { -1, 100 }; - SetStatusWidths( 2, widths ); +void MyFrame::OnCopy(wxCommandEvent& WXUNUSED(event)) +{ + wxBitmapDataObject *dobjBmp = new wxBitmapDataObject; + dobjBmp->SetBitmap(m_canvas->my_horse_png); - m_canvas = new MyCanvas( this, -1, wxPoint(0,0), wxSize(10,10) ); + wxTheClipboard->Open(); - // 500 width * 1900 height - m_canvas->SetScrollbars( 10, 10, 50, 200 ); + if ( !wxTheClipboard->SetData(dobjBmp) ) + { + wxLogError(_T("Failed to copy bitmap to clipboard")); + } + + wxTheClipboard->Close(); } -void MyFrame::OnQuit( wxCommandEvent &WXUNUSED(event) ) +void MyFrame::OnPaste(wxCommandEvent& WXUNUSED(event)) { - Close( TRUE ); + wxBitmapDataObject dobjBmp; + + wxTheClipboard->Open(); + if ( !wxTheClipboard->GetData(dobjBmp) ) + { + wxLogMessage(_T("No bitmap data in the clipboard")); + } + else + { + (new MyImageFrame(this, _T("Clipboard"), dobjBmp.GetBitmap()))->Show(); + } + wxTheClipboard->Close(); } -void MyFrame::OnAbout( wxCommandEvent &WXUNUSED(event) ) +#endif // wxUSE_CLIPBOARD + +void MyFrame::OnThumbnail( wxCommandEvent &WXUNUSED(event) ) { - (void)wxMessageBox( "wxImage demo\n" - "\n" - "Robert Roebling (c) 1998", - "About wxImage Demo", wxICON_INFORMATION | wxOK ); +#if wxUSE_FILEDLG + wxString filename = wxFileSelector(_T("Select image file")); + if ( filename.empty() ) + return; + + static const int THUMBNAIL_WIDTH = 320; + static const int THUMBNAIL_HEIGHT = 240; + + wxImage image; + image.SetOption(wxIMAGE_OPTION_MAX_WIDTH, THUMBNAIL_WIDTH); + image.SetOption(wxIMAGE_OPTION_MAX_HEIGHT, THUMBNAIL_HEIGHT); + + wxStopWatch sw; + if ( !image.LoadFile(filename) ) + { + wxLogError(_T("Couldn't load image from '%s'."), filename.c_str()); + return; + } + + const long loadTime = sw.Time(); + + MyImageFrame * const + frame = new MyImageFrame(this, filename, wxBitmap(image)); + frame->Show(); + wxLogStatus(frame, "Loaded \"%s\" in %ldms", filename, loadTime); +#else + wxLogError( _T("Couldn't create file selector dialog") ); + return; +#endif // wxUSE_FILEDLG } //----------------------------------------------------------------------------- // MyApp //----------------------------------------------------------------------------- +IMPLEMENT_APP(MyApp) + 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 + wxFrame *frame = new MyFrame(); + frame->Show( true ); -#if wxUSE_PNM - wxImage::AddHandler( new wxPNMHandler ); -#endif - - wxFrame *frame = new MyFrame(); - frame->Show( TRUE ); - - return TRUE; + return true; } -