git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@14751 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
		
			
				
	
	
		
			753 lines
		
	
	
		
			20 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			753 lines
		
	
	
		
			20 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
| /*
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|  * Program: image
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|  *
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|  * Author: Robert Roebling
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|  *
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|  * Copyright: (C) 1998, Robert Roebling
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|  *
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|  */
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| 
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| // For compilers that support precompilation, includes "wx/wx.h".
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| #include "wx/wxprec.h"
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| 
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| #ifdef __BORLANDC__
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| #pragma hdrstop
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| #endif
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| 
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| #ifndef WX_PRECOMP
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| #include "wx/wx.h"
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| #endif
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| 
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| #include "wx/image.h"
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| #include "wx/file.h"
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| #include "wx/mstream.h"
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| #include "wx/wfstream.h"
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| #include "wx/quantize.h"
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| 
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| #include "smile.xbm"
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| #include "smile.xpm"
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| 
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| 
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| // derived classes
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| 
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| class MyFrame;
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| class MyApp;
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| 
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| // MyCanvas
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| 
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| class MyCanvas: public wxScrolledWindow
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| {
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| public:
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|     MyCanvas() {};
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|     MyCanvas( wxWindow *parent, wxWindowID, const wxPoint &pos, const wxSize &size );
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|     ~MyCanvas();
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|     void OnPaint( wxPaintEvent &event );
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|     void CreateAntiAliasedBitmap();
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| 
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|     wxBitmap  *my_horse_png;
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|     wxBitmap  *my_horse_jpeg;
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|     wxBitmap  *my_horse_gif;
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|     wxBitmap  *my_horse_bmp;
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|     wxBitmap  *my_horse_pcx;
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|     wxBitmap  *my_horse_pnm;
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|     wxBitmap  *my_horse_tiff;
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|     wxBitmap  *my_horse_xpm;
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|     wxBitmap  *my_horse_ico32;
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|     wxBitmap  *my_horse_ico16;
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|     wxBitmap  *my_horse_ico;
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|     wxBitmap  *my_horse_cur;
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|     
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|     wxBitmap  *my_smile_xbm;
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|     wxBitmap  *my_square;
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|     wxBitmap  *my_anti;
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| 
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|     int xH, yH ;
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| 
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| protected:
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|     wxBitmap m_bmpSmileXpm;
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|     wxIcon   m_iconSmileXpm;
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| 
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| private:
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|     DECLARE_DYNAMIC_CLASS(MyCanvas)
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|     DECLARE_EVENT_TABLE()
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| };
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| 
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| 
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| const int nChoices = 8 ;
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| static const wxString bppchoices[nChoices] =
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| {
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|     "1 bpp color",
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|     "1 bpp B&W",
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|     "4 bpp color",
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|     "8 bpp color",
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|     "8 bpp greyscale",
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|     "8 bpp red",
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|     "8 bpp own palette",
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|     "24 bpp"
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| };
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| 
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| static const int bppvalues[nChoices] =
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| {
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|     wxBMP_1BPP,
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|     wxBMP_1BPP_BW,
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|     wxBMP_4BPP,
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|     wxBMP_8BPP,
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|     wxBMP_8BPP_GREY,
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|     wxBMP_8BPP_RED,
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|     wxBMP_8BPP_PALETTE,
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|     wxBMP_24BPP
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| };
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| 
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| // MyFrame
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| 
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| 
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| class MyFrame: public wxFrame
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| {
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| public:
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|     MyFrame();
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| 
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|     void OnAbout( wxCommandEvent &event );
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|     void OnNewFrame( wxCommandEvent &event );
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|     void OnQuit( wxCommandEvent &event );
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| 
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|     MyCanvas         *m_canvas;
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| 
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| private:
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|     DECLARE_DYNAMIC_CLASS(MyFrame)
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|     DECLARE_EVENT_TABLE()
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| };
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| 
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| class MyImageFrame : public wxFrame
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| {
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| public:
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|     MyImageFrame(wxFrame *parent, const wxBitmap& bitmap)
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|         : wxFrame(parent, -1, _T("Double click to save"),
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|                   wxDefaultPosition, wxDefaultSize,
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|                   wxCAPTION | wxSYSTEM_MENU),
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|                   m_bitmap(bitmap)
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|     {
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|         SetClientSize(bitmap.GetWidth(), bitmap.GetHeight());
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|     }
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| 
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|     void OnPaint(wxPaintEvent& WXUNUSED(event))
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|     {
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|         wxPaintDC dc( this );
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|         //TRUE for masked images
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|         dc.DrawBitmap( m_bitmap, 0, 0, TRUE );
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|     }
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| 
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|     void OnSave(wxCommandEvent& WXUNUSED(event))
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|     {
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|         wxImage image = m_bitmap.ConvertToImage();
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| 
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|         int bppselection = wxGetSingleChoiceIndex("Set BMP BPP",
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|                                                   "Set BMP BPP",
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|                                                   nChoices,
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|                                                   bppchoices,
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|                                                   this);
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|         if ( bppselection == -1 )
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|         {
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|             // cancelled
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|             return;
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|         }
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| 
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|         image.SetOption(wxIMAGE_OPTION_BMP_FORMAT, bppvalues[bppselection]);
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| 
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|         wxString deffilename = bppchoices[bppselection];
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|         deffilename.Replace(wxT(" "), wxT("_"));
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|         deffilename += wxT(".bmp");
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|         wxString savefilename = wxFileSelector( wxT("Save Image"),
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|                                                 wxT(""),
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|                                                 deffilename,
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|                                                 (const wxChar *)NULL,
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|                                             wxT("BMP files (*.bmp)|*.bmp|")
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|                                             wxT("PNG files (*.png)|*.png|")
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|                                             wxT("JPEG files (*.jpg)|*.jpg|")
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|                                             wxT("GIF files (*.gif)|*.gif|")
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|                                             wxT("TIFF files (*.tif)|*.tif|")
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|                                             wxT("PCX files (*.pcx)|*.pcx|")
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|                                             wxT("ICO files (*.ico)|*.ico|")
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|                                             wxT("CUR files (*.cur)|*.cur"),
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|                                                 wxSAVE);
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| 
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|         if ( savefilename.empty() )
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|             return;
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| 
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|         if ( image.GetOptionInt(wxIMAGE_OPTION_BMP_FORMAT) == wxBMP_8BPP_PALETTE )
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|         {
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|             unsigned char *cmap = new unsigned char [256];
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|             for ( int i = 0; i < 256; i++ )
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|                 cmap[i] = i;
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|             image.SetPalette(wxPalette(256, cmap, cmap, cmap));
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| 
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|             delete cmap;
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|         }
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| 
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|         bool loaded;
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|         wxString extension = savefilename.AfterLast('.').Lower();
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| 
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|         if (extension == "cur")
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|         {
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|             image.Rescale(32,32);    
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|             image.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_X, 0);    
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|             image.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_Y, 0);
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|             // This shows how you can save an image with explicitly
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|             // specified image format:
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|             loaded = image.SaveFile(savefilename, wxBITMAP_TYPE_CUR);
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|         }
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|         else 
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|         {
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|             // This one guesses image format from filename extension
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|             // (it may fail if the extension is not recognized):
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|             loaded = image.SaveFile(savefilename);
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|         }
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|         
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|         if ( !loaded )
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|             wxMessageBox("No handler for this file type.",
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|                          "File was not saved",
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|                          wxOK|wxCENTRE, this);
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|     }
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| 
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| private:
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|     wxBitmap m_bitmap;
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| 
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|     DECLARE_EVENT_TABLE()
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| };
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| 
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| // MyApp
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| 
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| class MyApp: public wxApp
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| {
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| public:
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|     virtual bool OnInit();
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| };
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| 
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| // main program
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| 
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| IMPLEMENT_APP(MyApp)
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| 
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| // MyCanvas
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| 
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| IMPLEMENT_DYNAMIC_CLASS(MyCanvas, wxScrolledWindow)
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| 
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| BEGIN_EVENT_TABLE(MyImageFrame, wxFrame)
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|   EVT_PAINT(MyImageFrame::OnPaint)
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|   EVT_LEFT_DCLICK(MyImageFrame::OnSave)
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| END_EVENT_TABLE()
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| 
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| BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
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|   EVT_PAINT(MyCanvas::OnPaint)
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| END_EVENT_TABLE()
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| 
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| MyCanvas::MyCanvas( wxWindow *parent, wxWindowID id,
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|                     const wxPoint &pos, const wxSize &size )
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|         : wxScrolledWindow( parent, id, pos, size, wxSUNKEN_BORDER )
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| #if !defined(__WINDOWS__) || wxUSE_XPM_IN_MSW
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|           , m_bmpSmileXpm((const char **) smile_xpm)
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|           , m_iconSmileXpm((const char **) smile_xpm)
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| #endif
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| {
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|     my_horse_png = (wxBitmap*) NULL;
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|     my_horse_jpeg = (wxBitmap*) NULL;
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|     my_horse_gif = (wxBitmap*) NULL;
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|     my_horse_bmp = (wxBitmap*) NULL;
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|     my_horse_pcx = (wxBitmap*) NULL;
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|     my_horse_pnm = (wxBitmap*) NULL;
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|     my_horse_tiff = (wxBitmap*) NULL;
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|     my_horse_xpm = (wxBitmap*) NULL;
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|     my_horse_ico32 = (wxBitmap*) NULL;
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|     my_horse_ico16 = (wxBitmap*) NULL;
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|     my_horse_ico = (wxBitmap*) NULL;
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|     my_horse_cur = (wxBitmap*) NULL;
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| 
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|     my_smile_xbm = (wxBitmap*) NULL;
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|     my_square = (wxBitmap*) NULL;
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|     my_anti = (wxBitmap*) NULL;
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| 
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|     SetBackgroundColour(* wxWHITE);
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| 
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|     wxBitmap bitmap( 100, 100 );
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| 
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|     wxMemoryDC dc;
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|     dc.SelectObject( bitmap );
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|     dc.SetBrush( wxBrush( wxT("orange"), wxSOLID ) );
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|     dc.SetPen( *wxBLACK_PEN );
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|     dc.DrawRectangle( 0, 0, 100, 100 );
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|     dc.SetBrush( *wxWHITE_BRUSH );
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|     dc.DrawRectangle( 20, 20, 60, 60 );
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|     dc.SelectObject( wxNullBitmap );
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| 
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|     // try to find the directory with our images
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|     wxString dir;
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|     if ( wxFile::Exists(wxT("./horse.png")) )
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|         dir = "./";
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|     else if ( wxFile::Exists(wxT("../horse.png")) )
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|         dir = "../";
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|     else
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|         wxLogWarning(wxT("Can't find image files in either '.' or '..'!"));
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| 
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|     wxImage image = bitmap.ConvertToImage();
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| 
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| #if wxUSE_LIBPNG
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|     if ( !image.SaveFile( dir + wxString("test.png"), wxBITMAP_TYPE_PNG ))
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|         wxLogError(wxT("Can't save file"));
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| 
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|     image.Destroy();
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| 
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|     image.LoadFile( dir + wxString("test.png") );
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|     my_square = new wxBitmap( image );
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| 
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|     image.Destroy();
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| 
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|     if ( !image.LoadFile( dir + wxString("horse.png")) )
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|         wxLogError(wxT("Can't load PNG image"));
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|     else
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|         my_horse_png = new wxBitmap( image );
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| #endif // wxUSE_LIBPNG
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| 
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| #if wxUSE_LIBJPEG
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|     image.Destroy();
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| 
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|     if ( !image.LoadFile( dir + wxString("horse.jpg")) )
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|         wxLogError(wxT("Can't load JPG image"));
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|     else
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|         my_horse_jpeg = new wxBitmap( image );
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| #endif // wxUSE_LIBJPEG
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| 
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| #if wxUSE_GIF
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|     image.Destroy();
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| 
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|     if ( !image.LoadFile( dir + wxString("horse.gif")))
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|     //if ( !image.LoadFile( wxString("\\slidbar.gif"), wxBITMAP_TYPE_GIF, -2) )
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|         wxLogError(wxT("Can't load GIF image"));
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|     else
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|         my_horse_gif = new wxBitmap( image );
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| #endif
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| 
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| #if wxUSE_PCX
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|     image.Destroy();
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| 
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|     if ( !image.LoadFile( dir + wxString("horse.pcx"), wxBITMAP_TYPE_PCX ) )
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|         wxLogError(wxT("Can't load PCX image"));
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|     else
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|         my_horse_pcx = new wxBitmap( image );
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| #endif
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| 
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|     image.Destroy();
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| 
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|     if ( !image.LoadFile( dir + wxString("horse.bmp"), wxBITMAP_TYPE_BMP ) )
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|         wxLogError(wxT("Can't load BMP image"));
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|     else
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|         my_horse_bmp = new wxBitmap( image );
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| 
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| #if wxUSE_XPM
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|     image.Destroy();
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| 
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|     if ( !image.LoadFile( dir + wxString("horse.xpm"), wxBITMAP_TYPE_XPM ) )
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|         wxLogError(wxT("Can't load XPM image"));
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|     else
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|         my_horse_xpm = new wxBitmap( image );
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| 
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|     if ( !image.SaveFile( dir + wxString("test.xpm"), wxBITMAP_TYPE_XPM ))
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|         wxLogError(wxT("Can't save file"));
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| #endif
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| 
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| #if wxUSE_PNM
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|     image.Destroy();
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| 
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|     if ( !image.LoadFile( dir + wxString("horse.pnm"), wxBITMAP_TYPE_PNM ) )
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|         wxLogError(wxT("Can't load PNM image"));
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|     else
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|         my_horse_pnm = new wxBitmap( image );
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| #endif
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| 
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| #if wxUSE_LIBTIFF
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|     image.Destroy();
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| 
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|     if ( !image.LoadFile( dir + wxString("horse.tif"), wxBITMAP_TYPE_TIF ) )
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|         wxLogError(wxT("Can't load TIFF image"));
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|     else
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|         my_horse_tiff = new wxBitmap( image );
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| #endif
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| 
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|     CreateAntiAliasedBitmap();
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| 
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|     my_smile_xbm = new wxBitmap( (const char*)smile_bits, smile_width,
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|                                  smile_height, 1 );
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| 
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| #if !defined(__WINDOWS__) || wxUSE_XPM_IN_MSW
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|     // demonstrates XPM automatically using the mask when saving
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|     if ( m_bmpSmileXpm.Ok() )
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|         m_bmpSmileXpm.SaveFile("saved.xpm", wxBITMAP_TYPE_XPM);
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| #endif
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| 
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| #if wxUSE_ICO_CUR
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|     image.Destroy();
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| 
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|     if ( !image.LoadFile( dir + wxString("horse.ico"), wxBITMAP_TYPE_ICO, 0 ) )
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|         wxLogError(wxT("Can't load first ICO image"));
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|     else
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|         my_horse_ico32 = new wxBitmap( image );
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|         
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|     image.Destroy();
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| 
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|     if ( !image.LoadFile( dir + wxString("horse.ico"), wxBITMAP_TYPE_ICO, 1 ) )
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|         wxLogError(wxT("Can't load second ICO image"));
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|     else
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|         my_horse_ico16 = new wxBitmap( image );
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| 
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|     image.Destroy();
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| 
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|     if ( !image.LoadFile( dir + wxString("horse.ico") ) )
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|         wxLogError(wxT("Can't load best ICO image"));
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|     else
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|         my_horse_ico = new wxBitmap( image );
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| 
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|     image.Destroy();
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| 
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|     if ( !image.LoadFile( dir + wxString("horse.cur"), wxBITMAP_TYPE_CUR ) )
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|         wxLogError(wxT("Can't load best ICO image"));
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|     else
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|         {
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|         my_horse_cur = new wxBitmap( image );
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|         xH = 30 + image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_X) ;
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|         yH = 2420 + image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_Y) ;
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|         }
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|     
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| #endif
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| 
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| }
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| 
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| MyCanvas::~MyCanvas()
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| {
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|     delete my_horse_pnm;
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|     delete my_horse_png;
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|     delete my_horse_jpeg;
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|     delete my_horse_gif;
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|     delete my_horse_bmp;
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|     delete my_horse_pcx;
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|     delete my_horse_tiff;
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|     delete my_horse_xpm;
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|     delete my_horse_ico32;
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|     delete my_horse_ico16;
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|     delete my_horse_ico;
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|     delete my_horse_cur;
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|     delete my_smile_xbm;
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|     delete my_square;
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|     delete my_anti;
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| }
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| 
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| void MyCanvas::OnPaint( wxPaintEvent &WXUNUSED(event) )
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| {
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|     wxPaintDC dc( this );
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|     PrepareDC( dc );
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| 
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|     dc.DrawText( "Loaded image", 30, 10 );
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|     if (my_square && my_square->Ok()) dc.DrawBitmap( *my_square, 30, 30 );
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| 
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|     dc.DrawText( "Drawn directly", 150, 10 );
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|     dc.SetBrush( wxBrush( wxT("orange"), wxSOLID ) );
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|     dc.SetPen( *wxBLACK_PEN );
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|     dc.DrawRectangle( 150, 30, 100, 100 );
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|     dc.SetBrush( *wxWHITE_BRUSH );
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|     dc.DrawRectangle( 170, 50, 60, 60 );
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| 
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|     if (my_anti && my_anti->Ok())
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|         dc.DrawBitmap( *my_anti, 280, 30 );
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| 
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|     dc.DrawText( "PNG handler", 30, 135 );
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|     if (my_horse_png && my_horse_png->Ok())
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|     {
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|         dc.DrawBitmap( *my_horse_png, 30, 150 );
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|         wxRect rect(0,0,100,100);
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|         wxBitmap sub( my_horse_png->GetSubBitmap(rect) );
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|         dc.DrawText( "GetSubBitmap()", 280, 190 );
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|         dc.DrawBitmap( sub, 280, 210 );
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|     }
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| 
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|     dc.DrawText( "JPEG handler", 30, 365 );
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|     if (my_horse_jpeg && my_horse_jpeg->Ok())
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|         dc.DrawBitmap( *my_horse_jpeg, 30, 380 );
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| 
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|     dc.DrawText( "GIF handler", 30, 595 );
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|     if (my_horse_gif && my_horse_gif->Ok())
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|         dc.DrawBitmap( *my_horse_gif, 30, 610 );
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| 
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|     dc.DrawText( "PCX handler", 30, 825 );
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|     if (my_horse_pcx && my_horse_pcx->Ok())
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|         dc.DrawBitmap( *my_horse_pcx, 30, 840 );
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| 
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|     dc.DrawText( "BMP handler", 30, 1055 );
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|     if (my_horse_bmp && my_horse_bmp->Ok())
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|         dc.DrawBitmap( *my_horse_bmp, 30, 1070 );
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| 
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|     dc.DrawText( "PNM handler", 30, 1285 );
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|     if (my_horse_pnm && my_horse_pnm->Ok())
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|         dc.DrawBitmap( *my_horse_pnm, 30, 1300 );
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| 
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|     dc.DrawText( "TIFF handler", 30, 1515 );
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|     if (my_horse_tiff && my_horse_tiff->Ok())
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|         dc.DrawBitmap( *my_horse_tiff, 30, 1530 );
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| 
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|     dc.DrawText( "XPM handler", 30, 1745 );
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|     if (my_horse_xpm && my_horse_xpm->Ok())
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|         dc.DrawBitmap( *my_horse_xpm, 30, 1760 );
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| 
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| 
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|     if (my_smile_xbm && my_smile_xbm->Ok())
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|     {
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|         dc.DrawText( "XBM bitmap", 30, 1975 );
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|         dc.DrawText( "(green on red)", 30, 1990 );
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|         dc.SetTextForeground( wxT("GREEN") );
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|         dc.SetTextBackground( wxT("RED") );
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|         dc.DrawBitmap( *my_smile_xbm, 30, 2010 );
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| 
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|         dc.SetTextForeground( wxT("BLACK") );
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|         dc.DrawText( "After wxImage conversion", 150, 1975 );
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|         dc.DrawText( "(red on white)", 150, 1990 );
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|         dc.SetTextForeground( wxT("RED") );
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|         wxImage i = my_smile_xbm->ConvertToImage();
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|         i.SetMaskColour( 255, 255, 255 );
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|         i.Replace( 0, 0, 0,
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|                wxRED_PEN->GetColour().Red(),
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|                wxRED_PEN->GetColour().Green(),
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|                wxRED_PEN->GetColour().Blue() );
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|         dc.DrawBitmap( wxBitmap(i), 150, 2010, TRUE );
 | |
|         dc.SetTextForeground( wxT("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( wxT("RED") );
 | |
|         dc.SetTextBackground( wxT("GREEN") );
 | |
|         dc.DrawBitmap( mono, 30, 2130 );
 | |
| 
 | |
|         dc.SetTextForeground( wxT("BLACK") );
 | |
|         dc.DrawText( "After wxImage conversion", 150, 2095 );
 | |
|         dc.DrawText( "(red on white)", 150, 2110 );
 | |
|         dc.SetTextForeground( wxT("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( wxBitmap(i), 150, 2130, TRUE );
 | |
|         dc.SetTextForeground( wxT("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);
 | |
|     }
 | |
| 
 | |
|     dc.DrawText( "ICO handler (1st image)", 30, 2290 );
 | |
|     if (my_horse_ico32 && my_horse_ico32->Ok())
 | |
|         dc.DrawBitmap( *my_horse_ico32, 30, 2330, TRUE );
 | |
| 
 | |
|     dc.DrawText( "ICO handler (2nd image)", 230, 2290 );
 | |
|     if (my_horse_ico16 && my_horse_ico16->Ok())
 | |
|         dc.DrawBitmap( *my_horse_ico16, 230, 2330, TRUE );
 | |
|         
 | |
|     dc.DrawText( "ICO handler (best image)", 430, 2290 );
 | |
|     if (my_horse_ico && my_horse_ico->Ok())
 | |
|         dc.DrawBitmap( *my_horse_ico, 430, 2330, TRUE );
 | |
| 
 | |
|     dc.DrawText( "CUR handler", 30, 2390 );
 | |
|     if (my_horse_cur && my_horse_cur->Ok())
 | |
|         {
 | |
|         dc.DrawBitmap( *my_horse_cur, 30, 2420, TRUE );
 | |
|         dc.SetPen (*wxRED_PEN);
 | |
|         dc.DrawLine (xH-10,yH,xH+10,yH);
 | |
|         dc.DrawLine (xH,yH-10,xH,yH+10);
 | |
|         }
 | |
| }
 | |
| 
 | |
| void MyCanvas::CreateAntiAliasedBitmap()
 | |
| {
 | |
|   wxBitmap bitmap( 300, 300 );
 | |
| 
 | |
|   wxMemoryDC dc;
 | |
| 
 | |
|   dc.SelectObject( bitmap );
 | |
| 
 | |
|   dc.Clear();
 | |
| 
 | |
|   dc.SetFont( wxFont( 24, wxDECORATIVE, wxNORMAL, wxNORMAL) );
 | |
|   dc.SetTextForeground( wxT("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);
 | |
| }
 | |
| 
 | |
| // MyFrame
 | |
| 
 | |
| 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()
 | |
|        : wxFrame( (wxFrame *)NULL, -1, "wxImage sample",
 | |
|                   wxPoint(20,20), wxSize(470,360) )
 | |
| {
 | |
|   wxMenu *file_menu = new wxMenu();
 | |
|   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");
 | |
| 
 | |
|   SetMenuBar( menu_bar );
 | |
| 
 | |
|   CreateStatusBar(2);
 | |
|   int widths[] = { -1, 100 };
 | |
|   SetStatusWidths( 2, widths );
 | |
| 
 | |
|   m_canvas = new MyCanvas( this, -1, wxPoint(0,0), wxSize(10,10) );
 | |
| 
 | |
|   // 500 width * 2500 height
 | |
|   m_canvas->SetScrollbars( 10, 10, 50, 250 );
 | |
| }
 | |
| 
 | |
| void MyFrame::OnQuit( wxCommandEvent &WXUNUSED(event) )
 | |
| {
 | |
|   Close( TRUE );
 | |
| }
 | |
| 
 | |
| void MyFrame::OnAbout( wxCommandEvent &WXUNUSED(event) )
 | |
| {
 | |
|   (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, wxBitmap(image)))->Show();
 | |
| }
 | |
| 
 | |
| //-----------------------------------------------------------------------------
 | |
| // MyApp
 | |
| //-----------------------------------------------------------------------------
 | |
| 
 | |
| bool MyApp::OnInit()
 | |
| {
 | |
| #if wxUSE_LIBPNG
 | |
|   wxImage::AddHandler( new wxPNGHandler );
 | |
| #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
 | |
| 
 | |
| #if wxUSE_ICO_CUR
 | |
|   wxImage::AddHandler( new wxICOHandler );
 | |
|   wxImage::AddHandler( new wxCURHandler );
 | |
| #endif
 | |
| 
 | |
|   wxFrame *frame = new MyFrame();
 | |
|   frame->Show( TRUE );
 | |
| 
 | |
|   return TRUE;
 | |
| }
 | |
| 
 |