c66972ccc2
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@43832 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
1178 lines
34 KiB
C++
1178 lines
34 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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// Name: samples/image/image.cpp
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// Purpose: sample showing operations with wxImage
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// Author: Robert Roebling
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// Modified by:
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// Created: 1998
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// RCS-ID: $Id$
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// Copyright: (c) 1998-2005 Robert Roebling
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// License: wxWindows licence
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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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#ifdef __BORLANDC__
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#pragma hdrstop
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#endif
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#ifndef WX_PRECOMP
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#include "wx/wx.h"
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#endif
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#include "wx/image.h"
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#include "wx/file.h"
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#include "wx/filename.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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#if wxUSE_CLIPBOARD
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#include "wx/dataobj.h"
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#include "wx/clipbrd.h"
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#endif // wxUSE_CLIPBOARD
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#include "smile.xbm"
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#include "smile.xpm"
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#if defined(__WXMSW__)
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#ifdef wxHAVE_RAW_BITMAP
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#include "wx/rawbmp.h"
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#endif
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#endif
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#if defined(__WXMAC__) || defined(__WXGTK__)
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#define wxHAVE_RAW_BITMAP
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#include "wx/rawbmp.h"
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#endif
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// derived classes
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class MyFrame;
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class MyApp;
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// MyCanvas
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class MyCanvas: public wxScrolledWindow
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{
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public:
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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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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_bmp2;
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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_tga;
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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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wxBitmap my_smile_xbm;
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wxBitmap my_square;
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wxBitmap my_anti;
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wxBitmap my_horse_asciigrey_pnm;
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wxBitmap my_horse_rawgrey_pnm;
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wxBitmap colorized_horse_jpeg;
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wxBitmap my_cmyk_jpeg;
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wxBitmap my_toucan;
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wxBitmap my_toucan_flipped_horiz;
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wxBitmap my_toucan_flipped_vert;
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wxBitmap my_toucan_flipped_both;
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wxBitmap my_toucan_grey;
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wxBitmap my_toucan_head;
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wxBitmap my_toucan_scaled_normal;
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wxBitmap my_toucan_scaled_high;
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wxBitmap my_toucan_blur;
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int xH, yH ;
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int m_ani_images;
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wxBitmap *my_horse_ani;
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private:
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wxBitmap m_bmpSmileXpm;
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wxIcon m_iconSmileXpm;
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DECLARE_EVENT_TABLE()
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};
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// MyFrame
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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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void OnAbout( wxCommandEvent &event );
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void OnNewFrame( wxCommandEvent &event );
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#ifdef wxHAVE_RAW_BITMAP
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void OnTestRawBitmap( wxCommandEvent &event );
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#endif // wxHAVE_RAW_BITMAP
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void OnQuit( wxCommandEvent &event );
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#if wxUSE_CLIPBOARD
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void OnCopy(wxCommandEvent& event);
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void OnPaste(wxCommandEvent& event);
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#endif // wxUSE_CLIPBOARD
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MyCanvas *m_canvas;
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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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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, wxID_ANY, _T("Double click to save"),
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wxDefaultPosition, wxDefaultSize,
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wxCAPTION | wxSYSTEM_MENU | wxCLOSE_BOX),
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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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void OnEraseBackground(wxEraseEvent& WXUNUSED(event))
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{
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// do nothing here to be able to see how transparent images are shown
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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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dc.DrawBitmap( m_bitmap, 0, 0, true /* use mask */ );
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}
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void OnSave(wxMouseEvent& WXUNUSED(event))
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{
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#if wxUSE_FILEDLG
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wxImage image = m_bitmap.ConvertToImage();
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wxString savefilename = wxFileSelector( wxT("Save Image"),
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wxEmptyString,
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wxEmptyString,
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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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wxFD_SAVE,
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this);
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if ( savefilename.empty() )
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return;
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wxString extension;
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wxFileName::SplitPath(savefilename, NULL, NULL, &extension);
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bool saved = false;
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if ( extension == _T("bmp") )
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{
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static const int bppvalues[] =
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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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const wxString bppchoices[] =
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{
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_T("1 bpp color"),
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_T("1 bpp B&W"),
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_T("4 bpp color"),
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_T("8 bpp color"),
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_T("8 bpp greyscale"),
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_T("8 bpp red"),
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_T("8 bpp own palette"),
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_T("24 bpp")
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};
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int bppselection = wxGetSingleChoiceIndex(_T("Set BMP BPP"),
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_T("Image sample: save file"),
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WXSIZEOF(bppchoices),
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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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int format = bppvalues[bppselection];
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image.SetOption(wxIMAGE_OPTION_BMP_FORMAT, format);
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if ( 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] = (unsigned char)i;
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image.SetPalette(wxPalette(256, cmap, cmap, cmap));
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delete[] cmap;
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}
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}
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}
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else if ( extension == _T("png") )
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{
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static const int pngvalues[] =
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{
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wxPNG_TYPE_COLOUR,
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wxPNG_TYPE_COLOUR,
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wxPNG_TYPE_GREY,
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wxPNG_TYPE_GREY,
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wxPNG_TYPE_GREY_RED,
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wxPNG_TYPE_GREY_RED,
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};
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const wxString pngchoices[] =
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{
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_T("Colour 8bpp"),
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_T("Colour 16bpp"),
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_T("Grey 8bpp"),
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_T("Grey 16bpp"),
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_T("Grey red 8bpp"),
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_T("Grey red 16bpp"),
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};
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int sel = wxGetSingleChoiceIndex(_T("Set PNG format"),
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_T("Image sample: save file"),
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WXSIZEOF(pngchoices),
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pngchoices,
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this);
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if ( sel != -1 )
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{
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image.SetOption(wxIMAGE_OPTION_PNG_FORMAT, pngvalues[sel]);
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image.SetOption(wxIMAGE_OPTION_PNG_BITDEPTH, sel % 2 ? 16 : 8);
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}
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}
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else if ( extension == _T("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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saved = image.SaveFile(savefilename, wxBITMAP_TYPE_CUR);
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}
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if ( !saved )
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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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image.SaveFile(savefilename);
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}
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#endif // wxUSE_FILEDLG
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}
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private:
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wxBitmap m_bitmap;
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DECLARE_EVENT_TABLE()
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};
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#ifdef wxHAVE_RAW_BITMAP
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#include "wx/rawbmp.h"
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class MyRawBitmapFrame : public wxFrame
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{
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public:
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enum
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{
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BORDER = 15,
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SIZE = 150,
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REAL_SIZE = SIZE - 2*BORDER
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};
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MyRawBitmapFrame(wxFrame *parent)
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: wxFrame(parent, wxID_ANY, _T("Raw bitmaps (how exciting)")),
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m_bitmap(SIZE, SIZE, 24),
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m_alphaBitmap(SIZE, SIZE, 32)
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{
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SetClientSize(SIZE, SIZE*2+25);
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InitAlphaBitmap();
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InitBitmap();
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}
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void InitAlphaBitmap()
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{
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// First, clear the whole bitmap by making it alpha
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{
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wxAlphaPixelData data( m_alphaBitmap, wxPoint(0,0), wxSize(SIZE, SIZE) );
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if ( !data )
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{
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wxLogError(_T("Failed to gain raw access to bitmap data"));
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return;
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}
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data.UseAlpha();
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wxAlphaPixelData::Iterator p(data);
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for ( int y = 0; y < SIZE; ++y )
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{
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wxAlphaPixelData::Iterator rowStart = p;
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for ( int x = 0; x < SIZE; ++x )
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{
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p.Alpha() = 0;
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++p; // same as p.OffsetX(1)
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}
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p = rowStart;
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p.OffsetY(data, 1);
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}
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}
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// Then, draw colourful alpha-blended stripes
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wxAlphaPixelData data(m_alphaBitmap, wxPoint(BORDER, BORDER),
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wxSize(REAL_SIZE, REAL_SIZE));
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if ( !data )
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{
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wxLogError(_T("Failed to gain raw access to bitmap data"));
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return;
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}
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data.UseAlpha();
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wxAlphaPixelData::Iterator p(data);
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for ( int y = 0; y < REAL_SIZE; ++y )
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{
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wxAlphaPixelData::Iterator rowStart = p;
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int r = y < REAL_SIZE/3 ? 255 : 0,
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g = (REAL_SIZE/3 <= y) && (y < 2*(REAL_SIZE/3)) ? 255 : 0,
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b = 2*(REAL_SIZE/3) <= y ? 255 : 0;
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for ( int x = 0; x < REAL_SIZE; ++x )
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{
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// note that RGB must be premultiplied by alpha
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unsigned a = (wxAlphaPixelData::Iterator::ChannelType)((x*255.)/REAL_SIZE);
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p.Red() = r * a / 256;
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p.Green() = g * a / 256;
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p.Blue() = b * a / 256;
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p.Alpha() = a;
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++p; // same as p.OffsetX(1)
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}
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p = rowStart;
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p.OffsetY(data, 1);
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}
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}
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void InitBitmap()
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{
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// draw some colourful stripes without alpha
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wxNativePixelData data(m_bitmap);
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if ( !data )
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{
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wxLogError(_T("Failed to gain raw access to bitmap data"));
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return;
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}
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wxNativePixelData::Iterator p(data);
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for ( int y = 0; y < SIZE; ++y )
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{
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wxNativePixelData::Iterator rowStart = p;
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int r = y < SIZE/3 ? 255 : 0,
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g = (SIZE/3 <= y) && (y < 2*(SIZE/3)) ? 255 : 0,
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b = 2*(SIZE/3) <= y ? 255 : 0;
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for ( int x = 0; x < SIZE; ++x )
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{
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p.Red() = r;
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p.Green() = g;
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p.Blue() = b;
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++p; // same as p.OffsetX(1)
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}
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p = rowStart;
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p.OffsetY(data, 1);
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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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dc.DrawText(_T("This is alpha and raw bitmap test"), 0, BORDER);
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dc.DrawText(_T("This is alpha and raw bitmap test"), 0, SIZE/2 - BORDER);
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dc.DrawText(_T("This is alpha and raw bitmap test"), 0, SIZE - 2*BORDER);
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dc.DrawBitmap( m_alphaBitmap, 0, 0, true /* use mask */ );
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dc.DrawText(_T("Raw bitmap access without alpha"), 0, SIZE+5);
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dc.DrawBitmap( m_bitmap, 0, SIZE+5+dc.GetCharHeight());
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}
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private:
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wxBitmap m_bitmap;
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wxBitmap m_alphaBitmap;
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DECLARE_EVENT_TABLE()
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};
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#endif // wxHAVE_RAW_BITMAP
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// MyApp
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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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// main program
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IMPLEMENT_APP(MyApp)
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// MyCanvas
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BEGIN_EVENT_TABLE(MyImageFrame, wxFrame)
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EVT_ERASE_BACKGROUND(MyImageFrame::OnEraseBackground)
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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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#ifdef wxHAVE_RAW_BITMAP
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BEGIN_EVENT_TABLE(MyRawBitmapFrame, wxFrame)
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EVT_PAINT(MyRawBitmapFrame::OnPaint)
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END_EVENT_TABLE()
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#endif // wxHAVE_RAW_BITMAP
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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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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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, m_bmpSmileXpm(smile_xpm)
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, m_iconSmileXpm(smile_xpm)
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{
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my_horse_ani = NULL;
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m_ani_images = 0 ;
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SetBackgroundColour(* wxWHITE);
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wxBitmap bitmap( 100, 100 );
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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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// 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 = wxT("./");
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else if ( wxFile::Exists(wxT("../horse.png")) )
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dir = wxT("../");
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else
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wxLogWarning(wxT("Can't find image files in either '.' or '..'!"));
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wxImage image = bitmap.ConvertToImage();
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#if wxUSE_LIBPNG
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if ( !image.SaveFile( dir + _T("test.png"), wxBITMAP_TYPE_PNG ))
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wxLogError(wxT("Can't save file"));
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image.Destroy();
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if ( image.LoadFile( dir + _T("test.png") ) )
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my_square = wxBitmap( image );
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image.Destroy();
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if ( !image.LoadFile( dir + _T("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 = wxBitmap( image );
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if ( !image.LoadFile( dir + _T("toucan.png")) )
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wxLogError(wxT("Can't load PNG image"));
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else
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my_toucan = wxBitmap(image);
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my_toucan_flipped_horiz = wxBitmap(image.Mirror(true));
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my_toucan_flipped_vert = wxBitmap(image.Mirror(false));
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my_toucan_flipped_both = wxBitmap(image.Mirror(true).Mirror(false));
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my_toucan_grey = wxBitmap(image.ConvertToGreyscale());
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my_toucan_head = wxBitmap(image.GetSubImage(wxRect(40, 7, 80, 60)));
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my_toucan_scaled_normal = wxBitmap(image.Scale(110,90,wxIMAGE_QUALITY_NORMAL));
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my_toucan_scaled_high = wxBitmap(image.Scale(110,90,wxIMAGE_QUALITY_HIGH));
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my_toucan_blur = wxBitmap(image.Blur(10));
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#endif // wxUSE_LIBPNG
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#if wxUSE_LIBJPEG
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image.Destroy();
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if ( !image.LoadFile( dir + _T("horse.jpg")) )
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wxLogError(wxT("Can't load JPG image"));
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else
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{
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my_horse_jpeg = wxBitmap( image );
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// Colorize by rotating green hue to red
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wxImage::HSVValue greenHSV = wxImage::RGBtoHSV(wxImage::RGBValue(0, 255, 0));
|
|
wxImage::HSVValue redHSV = wxImage::RGBtoHSV(wxImage::RGBValue(255, 0, 0));
|
|
image.RotateHue(redHSV.hue - greenHSV.hue);
|
|
colorized_horse_jpeg = wxBitmap( image );
|
|
}
|
|
|
|
if ( !image.LoadFile( dir + _T("cmyk.jpg")) )
|
|
wxLogError(_T("Can't load CMYK JPG image"));
|
|
else
|
|
my_cmyk_jpeg = wxBitmap(image);
|
|
#endif // wxUSE_LIBJPEG
|
|
|
|
#if wxUSE_GIF
|
|
image.Destroy();
|
|
|
|
if ( !image.LoadFile( dir + _T("horse.gif" )) )
|
|
wxLogError(wxT("Can't load GIF image"));
|
|
else
|
|
my_horse_gif = wxBitmap( image );
|
|
#endif
|
|
|
|
#if wxUSE_PCX
|
|
image.Destroy();
|
|
|
|
if ( !image.LoadFile( dir + _T("horse.pcx"), wxBITMAP_TYPE_PCX ) )
|
|
wxLogError(wxT("Can't load PCX image"));
|
|
else
|
|
my_horse_pcx = wxBitmap( image );
|
|
#endif
|
|
|
|
image.Destroy();
|
|
|
|
if ( !image.LoadFile( dir + _T("horse.bmp"), wxBITMAP_TYPE_BMP ) )
|
|
wxLogError(wxT("Can't load BMP image"));
|
|
else
|
|
my_horse_bmp = wxBitmap( image );
|
|
|
|
#if wxUSE_XPM
|
|
image.Destroy();
|
|
|
|
if ( !image.LoadFile( dir + _T("horse.xpm"), wxBITMAP_TYPE_XPM ) )
|
|
wxLogError(wxT("Can't load XPM image"));
|
|
else
|
|
my_horse_xpm = wxBitmap( image );
|
|
|
|
if ( !image.SaveFile( dir + _T("test.xpm"), wxBITMAP_TYPE_XPM ))
|
|
wxLogError(wxT("Can't save file"));
|
|
#endif
|
|
|
|
#if wxUSE_PNM
|
|
image.Destroy();
|
|
|
|
if ( !image.LoadFile( dir + _T("horse.pnm"), wxBITMAP_TYPE_PNM ) )
|
|
wxLogError(wxT("Can't load PNM image"));
|
|
else
|
|
my_horse_pnm = 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 = 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 = wxBitmap( image );
|
|
#endif
|
|
|
|
#if wxUSE_LIBTIFF
|
|
image.Destroy();
|
|
|
|
if ( !image.LoadFile( dir + _T("horse.tif"), wxBITMAP_TYPE_TIF ) )
|
|
wxLogError(wxT("Can't load TIFF image"));
|
|
else
|
|
my_horse_tiff = wxBitmap( image );
|
|
#endif
|
|
|
|
#if wxUSE_LIBTIFF
|
|
image.Destroy();
|
|
|
|
if ( !image.LoadFile( dir + _T("horse.tga"), wxBITMAP_TYPE_TGA ) )
|
|
wxLogError(wxT("Can't load TGA image"));
|
|
else
|
|
my_horse_tga = wxBitmap( image );
|
|
#endif
|
|
|
|
CreateAntiAliasedBitmap();
|
|
|
|
my_smile_xbm = wxBitmap( (const char*)smile_bits, smile_width,
|
|
smile_height, 1 );
|
|
|
|
// demonstrates XPM automatically using the mask when saving
|
|
if ( m_bmpSmileXpm.Ok() )
|
|
m_bmpSmileXpm.SaveFile(_T("saved.xpm"), wxBITMAP_TYPE_XPM);
|
|
|
|
#if wxUSE_ICO_CUR
|
|
image.Destroy();
|
|
|
|
if ( !image.LoadFile( dir + _T("horse.ico"), wxBITMAP_TYPE_ICO, 0 ) )
|
|
wxLogError(wxT("Can't load first ICO image"));
|
|
else
|
|
my_horse_ico32 = wxBitmap( image );
|
|
|
|
image.Destroy();
|
|
|
|
if ( !image.LoadFile( dir + _T("horse.ico"), wxBITMAP_TYPE_ICO, 1 ) )
|
|
wxLogError(wxT("Can't load second ICO image"));
|
|
else
|
|
my_horse_ico16 = wxBitmap( image );
|
|
|
|
image.Destroy();
|
|
|
|
if ( !image.LoadFile( dir + _T("horse.ico") ) )
|
|
wxLogError(wxT("Can't load best ICO image"));
|
|
else
|
|
my_horse_ico = wxBitmap( image );
|
|
|
|
image.Destroy();
|
|
|
|
if ( !image.LoadFile( dir + _T("horse.cur"), wxBITMAP_TYPE_CUR ) )
|
|
wxLogError(wxT("Can't load best ICO image"));
|
|
else
|
|
{
|
|
my_horse_cur = wxBitmap( image );
|
|
xH = 30 + image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_X) ;
|
|
yH = 2420 + image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_Y) ;
|
|
}
|
|
|
|
m_ani_images = wxImage::GetImageCount ( dir + _T("horse3.ani"), wxBITMAP_TYPE_ANI );
|
|
if (m_ani_images==0)
|
|
wxLogError(wxT("No ANI-format images found"));
|
|
else
|
|
my_horse_ani = new wxBitmap [m_ani_images];
|
|
int i ;
|
|
for (i=0; i < m_ani_images; i++)
|
|
{
|
|
image.Destroy();
|
|
if (!image.LoadFile( dir + _T("horse3.ani"), wxBITMAP_TYPE_ANI, i ))
|
|
{
|
|
wxString tmp = wxT("Can't load image number ");
|
|
tmp << i ;
|
|
wxLogError(tmp);
|
|
}
|
|
else
|
|
my_horse_ani [i] = wxBitmap( image );
|
|
}
|
|
#endif // wxUSE_ICO_CUR
|
|
|
|
image.Destroy();
|
|
|
|
// test image loading from stream
|
|
wxFile file(dir + _T("horse.bmp"));
|
|
if ( file.IsOpened() )
|
|
{
|
|
wxFileOffset len = file.Length();
|
|
size_t dataSize = (size_t)len;
|
|
void *data = malloc(dataSize);
|
|
if ( file.Read(data, dataSize) != len )
|
|
wxLogError(_T("Reading bitmap file failed"));
|
|
else
|
|
{
|
|
wxMemoryInputStream mis(data, dataSize);
|
|
if ( !image.LoadFile(mis) )
|
|
wxLogError(wxT("Can't load BMP image from stream"));
|
|
else
|
|
my_horse_bmp2 = wxBitmap( image );
|
|
}
|
|
|
|
free(data);
|
|
}
|
|
}
|
|
|
|
MyCanvas::~MyCanvas()
|
|
{
|
|
delete [] my_horse_ani;
|
|
}
|
|
|
|
void MyCanvas::OnPaint( wxPaintEvent &WXUNUSED(event) )
|
|
{
|
|
wxPaintDC dc( this );
|
|
PrepareDC( dc );
|
|
|
|
dc.DrawText( _T("Loaded image"), 30, 10 );
|
|
if (my_square.Ok())
|
|
dc.DrawBitmap( my_square, 30, 30 );
|
|
|
|
dc.DrawText( _T("Drawn directly"), 150, 10 );
|
|
dc.SetBrush( wxBrush( wxT("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.Ok())
|
|
dc.DrawBitmap( my_anti, 280, 30 );
|
|
|
|
dc.DrawText( _T("PNG handler"), 30, 135 );
|
|
if (my_horse_png.Ok())
|
|
{
|
|
dc.DrawBitmap( my_horse_png, 30, 150 );
|
|
wxRect rect(0,0,100,100);
|
|
wxBitmap sub( my_horse_png.GetSubBitmap(rect) );
|
|
dc.DrawText( _T("GetSubBitmap()"), 280, 175 );
|
|
dc.DrawBitmap( sub, 280, 195 );
|
|
}
|
|
|
|
dc.DrawText( _T("JPEG handler"), 30, 365 );
|
|
if (my_horse_jpeg.Ok())
|
|
dc.DrawBitmap( my_horse_jpeg, 30, 380 );
|
|
|
|
dc.DrawText( _T("Green rotated to red"), 280, 365 );
|
|
if (colorized_horse_jpeg.Ok())
|
|
dc.DrawBitmap( colorized_horse_jpeg, 280, 380 );
|
|
|
|
dc.DrawText( _T("CMYK JPEG image"), 530, 365 );
|
|
if (my_cmyk_jpeg.Ok())
|
|
dc.DrawBitmap( my_cmyk_jpeg, 530, 380 );
|
|
|
|
dc.DrawText( _T("GIF handler"), 30, 595 );
|
|
if (my_horse_gif.Ok())
|
|
dc.DrawBitmap( my_horse_gif, 30, 610 );
|
|
|
|
dc.DrawText( _T("PCX handler"), 30, 825 );
|
|
if (my_horse_pcx.Ok())
|
|
dc.DrawBitmap( my_horse_pcx, 30, 840 );
|
|
|
|
dc.DrawText( _T("BMP handler"), 30, 1055 );
|
|
if (my_horse_bmp.Ok())
|
|
dc.DrawBitmap( my_horse_bmp, 30, 1070 );
|
|
|
|
dc.DrawText( _T("BMP read from memory"), 280, 1055 );
|
|
if (my_horse_bmp2.Ok())
|
|
dc.DrawBitmap( my_horse_bmp2, 280, 1070 );
|
|
|
|
dc.DrawText( _T("PNM handler"), 30, 1285 );
|
|
if (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.Ok())
|
|
dc.DrawBitmap( my_horse_asciigrey_pnm, 280, 1300 );
|
|
|
|
dc.DrawText( _T("PNM handler (raw grey)"), 530, 1285 );
|
|
if (my_horse_rawgrey_pnm.Ok())
|
|
dc.DrawBitmap( my_horse_rawgrey_pnm, 530, 1300 );
|
|
|
|
dc.DrawText( _T("TIFF handler"), 30, 1515 );
|
|
if (my_horse_tiff.Ok())
|
|
dc.DrawBitmap( my_horse_tiff, 30, 1530 );
|
|
|
|
dc.DrawText( _T("TGA handler"), 30, 1745 );
|
|
if (my_horse_tga.Ok())
|
|
dc.DrawBitmap( my_horse_tga, 30, 1760 );
|
|
|
|
dc.DrawText( _T("XPM handler"), 30, 1975 );
|
|
if (my_horse_xpm.Ok())
|
|
dc.DrawBitmap( my_horse_xpm, 30, 2000 );
|
|
|
|
// toucans
|
|
{
|
|
int x = 750, y = 10, yy = 170;
|
|
|
|
dc.DrawText(wxT("Original toucan"), x+50, y);
|
|
dc.DrawBitmap(my_toucan, x, y+15, true);
|
|
y += yy;
|
|
dc.DrawText(wxT("Flipped horizontally"), x+50, y);
|
|
dc.DrawBitmap(my_toucan_flipped_horiz, x, y+15, true);
|
|
y += yy;
|
|
dc.DrawText(wxT("Flipped vertically"), x+50, y);
|
|
dc.DrawBitmap(my_toucan_flipped_vert, x, y+15, true);
|
|
y += yy;
|
|
dc.DrawText(wxT("Flipped both h&v"), x+50, y);
|
|
dc.DrawBitmap(my_toucan_flipped_both, x, y+15, true);
|
|
|
|
y += yy;
|
|
dc.DrawText(wxT("In greyscale"), x+50, y);
|
|
dc.DrawBitmap(my_toucan_grey, x, y+15, true);
|
|
|
|
y += yy;
|
|
dc.DrawText(wxT("Toucan's head"), x+50, y);
|
|
dc.DrawBitmap(my_toucan_head, x, y+15, true);
|
|
|
|
y += yy;
|
|
dc.DrawText(wxT("Scaled with normal quality"), x+50, y);
|
|
dc.DrawBitmap(my_toucan_scaled_normal, x, y+15, true);
|
|
|
|
y += yy;
|
|
dc.DrawText(wxT("Scaled with high quality"), x+50, y);
|
|
dc.DrawBitmap(my_toucan_scaled_high, x, y+15, true);
|
|
|
|
y += yy;
|
|
dc.DrawText(wxT("Blured"), x+50, y);
|
|
dc.DrawBitmap(my_toucan_blur, x, y+15, true);
|
|
}
|
|
|
|
if (my_smile_xbm.Ok())
|
|
{
|
|
int x = 300, y = 1800;
|
|
|
|
dc.DrawText( _T("XBM bitmap"), x, y );
|
|
dc.DrawText( _T("(green on red)"), x, y + 15 );
|
|
dc.SetTextForeground( _T("GREEN") );
|
|
dc.SetTextBackground( _T("RED") );
|
|
dc.DrawBitmap( my_smile_xbm, x, y + 30 );
|
|
|
|
dc.SetTextForeground( *wxBLACK );
|
|
dc.DrawText( _T("After wxImage conversion"), x + 120, y );
|
|
dc.DrawText( _T("(red on white)"), x + 120, y + 15 );
|
|
dc.SetTextForeground( wxT("RED") );
|
|
wxImage i = my_smile_xbm.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), x + 120, y + 30, true );
|
|
dc.SetTextForeground( *wxBLACK );
|
|
}
|
|
|
|
|
|
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 );
|
|
#ifndef __WXGTK20__
|
|
// I cannot convince GTK2 to draw into mono bitmaps
|
|
memdc.DrawText( _T("Hi!"), 5, 5 );
|
|
#endif
|
|
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())
|
|
{
|
|
int x = 300, y = 1900;
|
|
|
|
dc.DrawText( _T("Mono bitmap"), x, y );
|
|
dc.DrawText( _T("(red on green)"), x, y + 15 );
|
|
dc.SetTextForeground( wxT("RED") );
|
|
dc.SetTextBackground( wxT("GREEN") );
|
|
dc.DrawBitmap( mono, x, y + 30 );
|
|
|
|
dc.SetTextForeground( *wxBLACK );
|
|
dc.DrawText( _T("After wxImage conversion"), x + 120, y );
|
|
dc.DrawText( _T("(red on white)"), x + 120, y + 15 );
|
|
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), x + 120, y + 30, true );
|
|
dc.SetTextForeground( *wxBLACK );
|
|
}
|
|
|
|
// For testing transparency
|
|
dc.SetBrush( *wxRED_BRUSH );
|
|
dc.DrawRectangle( 20, 2220, 560, 68 );
|
|
|
|
dc.DrawText(_T("XPM bitmap"), 30, 2230 );
|
|
if ( m_bmpSmileXpm.Ok() )
|
|
dc.DrawBitmap(m_bmpSmileXpm, 30, 2250, true);
|
|
|
|
dc.DrawText(_T("XPM icon"), 110, 2230 );
|
|
if ( m_iconSmileXpm.Ok() )
|
|
dc.DrawIcon(m_iconSmileXpm, 110, 2250);
|
|
|
|
// testing icon -> bitmap conversion
|
|
wxBitmap to_blit( m_iconSmileXpm );
|
|
if (to_blit.Ok())
|
|
{
|
|
dc.DrawText( _T("SubBitmap"), 170, 2230 );
|
|
wxBitmap sub = to_blit.GetSubBitmap( wxRect(0,0,15,15) );
|
|
if (sub.Ok())
|
|
dc.DrawBitmap( sub, 170, 2250, true );
|
|
|
|
dc.DrawText( _T("Enlarged"), 250, 2230 );
|
|
dc.SetUserScale( 1.5, 1.5 );
|
|
dc.DrawBitmap( to_blit, (int)(250/1.5), (int)(2250/1.5), true );
|
|
dc.SetUserScale( 2, 2 );
|
|
dc.DrawBitmap( to_blit, (int)(300/2), (int)(2250/2), true );
|
|
dc.SetUserScale( 1.0, 1.0 );
|
|
|
|
dc.DrawText( _T("Blit"), 400, 2230);
|
|
wxMemoryDC blit_dc;
|
|
blit_dc.SelectObject( to_blit );
|
|
dc.Blit( 400, 2250, to_blit.GetWidth(), to_blit.GetHeight(), &blit_dc, 0, 0, wxCOPY, true );
|
|
dc.SetUserScale( 1.5, 1.5 );
|
|
dc.Blit( (int)(450/1.5), (int)(2250/1.5), to_blit.GetWidth(), to_blit.GetHeight(), &blit_dc, 0, 0, wxCOPY, true );
|
|
dc.SetUserScale( 2, 2 );
|
|
dc.Blit( (int)(500/2), (int)(2250/2), to_blit.GetWidth(), to_blit.GetHeight(), &blit_dc, 0, 0, wxCOPY, true );
|
|
dc.SetUserScale( 1.0, 1.0 );
|
|
}
|
|
|
|
dc.DrawText( _T("ICO handler (1st image)"), 30, 2290 );
|
|
if (my_horse_ico32.Ok())
|
|
dc.DrawBitmap( my_horse_ico32, 30, 2330, true );
|
|
|
|
dc.DrawText( _T("ICO handler (2nd image)"), 230, 2290 );
|
|
if (my_horse_ico16.Ok())
|
|
dc.DrawBitmap( my_horse_ico16, 230, 2330, true );
|
|
|
|
dc.DrawText( _T("ICO handler (best image)"), 430, 2290 );
|
|
if (my_horse_ico.Ok())
|
|
dc.DrawBitmap( my_horse_ico, 430, 2330, true );
|
|
|
|
dc.DrawText( _T("CUR handler"), 30, 2390 );
|
|
if (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);
|
|
}
|
|
|
|
dc.DrawText( _T("ANI handler"), 230, 2390 );
|
|
for ( int i=0; i < m_ani_images; i++ )
|
|
{
|
|
if (my_horse_ani[i].Ok())
|
|
{
|
|
dc.DrawBitmap( my_horse_ani[i], 230 + i * 2 * my_horse_ani[i].GetWidth() , 2420, true );
|
|
}
|
|
}
|
|
}
|
|
|
|
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( _T("This is anti-aliased Text."), 20, 5 );
|
|
dc.DrawText( _T("And a Rectangle."), 20, 45 );
|
|
|
|
dc.SetBrush( *wxRED_BRUSH );
|
|
dc.SetPen( *wxTRANSPARENT_PEN );
|
|
dc.DrawRoundedRectangle( 20, 85, 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, (unsigned char)red, (unsigned char)green, (unsigned char)blue );
|
|
}
|
|
my_anti = wxBitmap(anti);
|
|
}
|
|
|
|
// MyFrame
|
|
|
|
enum
|
|
{
|
|
ID_QUIT = wxID_EXIT,
|
|
ID_ABOUT = wxID_ABOUT,
|
|
ID_NEW = 100,
|
|
ID_SHOWRAW = 101
|
|
};
|
|
|
|
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)
|
|
#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"));
|
|
|
|
#ifdef wxHAVE_RAW_BITMAP
|
|
menuImage->Append( ID_SHOWRAW, _T("Test &raw bitmap...\tCtrl-R"));
|
|
#endif
|
|
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 );
|
|
}
|
|
|
|
void MyFrame::OnQuit( wxCommandEvent &WXUNUSED(event) )
|
|
{
|
|
Close( true );
|
|
}
|
|
|
|
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 );
|
|
}
|
|
|
|
void MyFrame::OnNewFrame( wxCommandEvent &WXUNUSED(event) )
|
|
{
|
|
#if wxUSE_FILEDLG
|
|
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();
|
|
#endif // wxUSE_FILEDLG
|
|
}
|
|
|
|
#ifdef wxHAVE_RAW_BITMAP
|
|
|
|
void MyFrame::OnTestRawBitmap( wxCommandEvent &WXUNUSED(event) )
|
|
{
|
|
(new MyRawBitmapFrame(this))->Show();
|
|
}
|
|
|
|
#endif // wxHAVE_RAW_BITMAP
|
|
|
|
#if wxUSE_CLIPBOARD
|
|
|
|
void MyFrame::OnCopy(wxCommandEvent& WXUNUSED(event))
|
|
{
|
|
wxBitmapDataObject *dobjBmp = new wxBitmapDataObject;
|
|
dobjBmp->SetBitmap(m_canvas->my_horse_png);
|
|
|
|
wxTheClipboard->Open();
|
|
|
|
if ( !wxTheClipboard->SetData(dobjBmp) )
|
|
{
|
|
wxLogError(_T("Failed to copy bitmap to clipboard"));
|
|
}
|
|
|
|
wxTheClipboard->Close();
|
|
}
|
|
|
|
void MyFrame::OnPaste(wxCommandEvent& WXUNUSED(event))
|
|
{
|
|
wxBitmapDataObject dobjBmp;
|
|
|
|
wxTheClipboard->Open();
|
|
if ( !wxTheClipboard->GetData(dobjBmp) )
|
|
{
|
|
wxLogMessage(_T("No bitmap data in the clipboard"));
|
|
}
|
|
else
|
|
{
|
|
(new MyImageFrame(this, dobjBmp.GetBitmap()))->Show();
|
|
}
|
|
wxTheClipboard->Close();
|
|
}
|
|
|
|
#endif // wxUSE_CLIPBOARD
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// MyApp
|
|
//-----------------------------------------------------------------------------
|
|
|
|
bool MyApp::OnInit()
|
|
{
|
|
wxInitAllImageHandlers();
|
|
|
|
wxFrame *frame = new MyFrame();
|
|
frame->Show( true );
|
|
|
|
return true;
|
|
}
|