X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/9386cb75e34acb49cd9fac945e09cf002f22db2d..15d06954409b3f50342b35354b642396a4779b84:/samples/image/image.cpp diff --git a/samples/image/image.cpp b/samples/image/image.cpp index 4d8d51e527..ee7ad0de60 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: +// 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" @@ -20,6 +22,7 @@ #include "wx/image.h" #include "wx/file.h" +#include "wx/filename.h" #include "wx/mstream.h" #include "wx/wfstream.h" #include "wx/quantize.h" @@ -32,12 +35,17 @@ #include "smile.xbm" #include "smile.xpm" -#if defined(__WXMSW__) || defined(__WXMAC__) +#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 + // derived classes class MyFrame; @@ -73,6 +81,9 @@ public: wxBitmap *my_square; wxBitmap *my_anti; + wxBitmap *my_horse_asciigrey_pnm; + wxBitmap *my_horse_rawgrey_pnm; + int xH, yH ; int m_ani_images ; @@ -86,31 +97,6 @@ private: }; -const int nChoices = 8 ; -static const wxString bppchoices[nChoices] = -{ - _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") -}; - -static const int bppvalues[nChoices] = -{ - wxBMP_1BPP, - wxBMP_1BPP_BW, - wxBMP_4BPP, - wxBMP_8BPP, - wxBMP_8BPP_GREY, - wxBMP_8BPP_RED, - wxBMP_8BPP_PALETTE, - wxBMP_24BPP -}; - // MyFrame @@ -165,25 +151,9 @@ public: { wxImage image = m_bitmap.ConvertToImage(); - int bppselection = wxGetSingleChoiceIndex(_T("Set BMP BPP"), - _T("Set BMP BPP"), - nChoices, - bppchoices, - this); - if ( bppselection == -1 ) - { - // cancelled - return; - } - - image.SetOption(wxIMAGE_OPTION_BMP_FORMAT, bppvalues[bppselection]); - - wxString deffilename = bppchoices[bppselection]; - deffilename.Replace(wxT(" "), wxT("_")); - deffilename += wxT(".bmp"); wxString savefilename = wxFileSelector( wxT("Save Image"), wxT(""), - deffilename, + wxT(""), (const wxChar *)NULL, wxT("BMP files (*.bmp)|*.bmp|") wxT("PNG files (*.png)|*.png|") @@ -199,39 +169,106 @@ public: if ( savefilename.empty() ) return; - if ( image.GetOptionInt(wxIMAGE_OPTION_BMP_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)); + wxString extension; + wxFileName::SplitPath(savefilename, NULL, NULL, &extension); - delete cmap; + bool saved = false; + if ( extension == _T("bpp") ) + { + 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; + } + } } - - bool loaded; - wxString extension = savefilename.AfterLast('.').Lower(); - - if (extension == _T("cur")) + 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); + } + } + 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: - loaded = image.SaveFile(savefilename, wxBITMAP_TYPE_CUR); + saved = image.SaveFile(savefilename, wxBITMAP_TYPE_CUR); } - else + + if ( !saved ) { // This one guesses image format from filename extension // (it may fail if the extension is not recognized): - loaded = image.SaveFile(savefilename); + image.SaveFile(savefilename); } - - if ( !loaded ) - wxMessageBox(_T("No handler for this file type."), - _T("File was not saved"), - wxOK|wxCENTRE, this); } private: @@ -285,10 +322,12 @@ public: for ( int x = 0; x < REAL_SIZE; ++x ) { - p.Red() = r; - p.Green() = g; - p.Blue() = b; - p.Alpha() = (Data::Iterator::ChannelType)((x*255.)/REAL_SIZE); + // note that RGB must be premultiplied by alpha + unsigned a = (Data::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) } @@ -374,6 +413,9 @@ MyCanvas::MyCanvas( wxWindow *parent, wxWindowID id, my_square = (wxBitmap*) NULL; my_anti = (wxBitmap*) NULL; + my_horse_asciigrey_pnm = (wxBitmap*) NULL; + my_horse_rawgrey_pnm = (wxBitmap*) NULL; + m_ani_images = 0 ; SetBackgroundColour(* wxWHITE); @@ -470,6 +512,20 @@ MyCanvas::MyCanvas( wxWindow *parent, wxWindowID id, wxLogError(wxT("Can't load PNM image")); else my_horse_pnm = new wxBitmap( image ); + + image.Destroy(); + + if ( !image.LoadFile( dir + _T("horse_ag.pnm"), wxBITMAP_TYPE_PNM ) ) + wxLogError(wxT("Can't load PNM image")); + else + my_horse_asciigrey_pnm = new wxBitmap( image ); + + image.Destroy(); + + if ( !image.LoadFile( dir + _T("horse_rg.pnm"), wxBITMAP_TYPE_PNM ) ) + wxLogError(wxT("Can't load PNM image")); + else + my_horse_rawgrey_pnm = new wxBitmap( image ); #endif #if wxUSE_LIBTIFF @@ -586,6 +642,8 @@ MyCanvas::~MyCanvas() delete my_smile_xbm; delete my_square; delete my_anti; + delete my_horse_asciigrey_pnm; + delete my_horse_rawgrey_pnm; } void MyCanvas::OnPaint( wxPaintEvent &WXUNUSED(event) ) @@ -639,6 +697,14 @@ void MyCanvas::OnPaint( wxPaintEvent &WXUNUSED(event) ) dc.DrawText( _T("PNM handler"), 30, 1285 ); if (my_horse_pnm && my_horse_pnm->Ok()) dc.DrawBitmap( *my_horse_pnm, 30, 1300 ); + + dc.DrawText( _T("PNM handler (ascii grey)"), 280, 1285 ); + if (my_horse_asciigrey_pnm && my_horse_asciigrey_pnm->Ok()) + dc.DrawBitmap( *my_horse_asciigrey_pnm, 280, 1300 ); + + dc.DrawText( _T("PNM handler (raw grey)"), 530, 1285 ); + if (my_horse_rawgrey_pnm && my_horse_rawgrey_pnm->Ok()) + dc.DrawBitmap( *my_horse_rawgrey_pnm, 530, 1300 ); dc.DrawText( _T("TIFF handler"), 30, 1515 ); if (my_horse_tiff && my_horse_tiff->Ok())