/*
* Program: image
- *
+ *
* Author: Robert Roebling
*
* Copyright: (C) 1998, Robert Roebling
*
*/
+// For compilers that support precompilation, includes "wx/wx.h".
+#include "wx/wxprec.h"
+
+#ifdef __BORLANDC__
+#pragma hdrstop
+#endif
+
+#ifndef WX_PRECOMP
#include "wx/wx.h"
+#endif
+
#include "wx/image.h"
+#include "wx/file.h"
+#include "wx/mstream.h"
+#include "wx/wfstream.h"
+#include "wx/quantize.h"
+
+#include "smile.xbm"
+#include "smile.xpm"
+
// derived classes
class MyCanvas: public wxScrolledWindow
{
- DECLARE_DYNAMIC_CLASS(MyCanvas)
-
- public:
-
- MyCanvas(void) {};
+public:
+ MyCanvas() {};
MyCanvas( wxWindow *parent, wxWindowID, const wxPoint &pos, const wxSize &size );
- ~MyCanvas(void);
+ ~MyCanvas();
void OnPaint( wxPaintEvent &event );
+ void CreateAntiAliasedBitmap();
+
+ wxBitmap *my_horse_png;
+ wxBitmap *my_horse_jpeg;
+ wxBitmap *my_horse_gif;
+ wxBitmap *my_horse_bmp;
+ wxBitmap *my_horse_pcx;
+ wxBitmap *my_horse_pnm;
+ wxBitmap *my_horse_tiff;
+ wxBitmap *my_horse_xpm;
+ wxBitmap *my_horse_ico32;
+ wxBitmap *my_horse_ico16;
+ wxBitmap *my_horse_ico;
+ wxBitmap *my_horse_cur;
- wxBitmap *my_horse;
+ wxBitmap *my_smile_xbm;
wxBitmap *my_square;
-
- DECLARE_EVENT_TABLE()
+ wxBitmap *my_anti;
+
+ int xH, yH ;
+
+protected:
+ wxBitmap m_bmpSmileXpm;
+ wxIcon m_iconSmileXpm;
+
+private:
+ DECLARE_DYNAMIC_CLASS(MyCanvas)
+ DECLARE_EVENT_TABLE()
+};
+
+
+const int nChoices = 8 ;
+static const wxString bppchoices[nChoices] =
+{
+ "1 bpp color",
+ "1 bpp B&W",
+ "4 bpp color",
+ "8 bpp color",
+ "8 bpp greyscale",
+ "8 bpp red",
+ "8 bpp own palette",
+ "24 bpp"
+};
+
+static const int bppvalues[nChoices] =
+{
+ wxBMP_1BPP,
+ wxBMP_1BPP_BW,
+ wxBMP_4BPP,
+ wxBMP_8BPP,
+ wxBMP_8BPP_GREY,
+ wxBMP_8BPP_RED,
+ wxBMP_8BPP_PALETTE,
+ wxBMP_24BPP
};
// MyFrame
+
class MyFrame: public wxFrame
{
- DECLARE_DYNAMIC_CLASS(MyFrame)
+public:
+ MyFrame();
- public:
-
- MyFrame(void);
- void OnSize( wxSizeEvent &event );
void OnAbout( wxCommandEvent &event );
+ void OnNewFrame( wxCommandEvent &event );
void OnQuit( wxCommandEvent &event );
-
+
MyCanvas *m_canvas;
-
- DECLARE_EVENT_TABLE()
+
+private:
+ DECLARE_DYNAMIC_CLASS(MyFrame)
+ DECLARE_EVENT_TABLE()
+};
+
+class MyImageFrame : public wxFrame
+{
+public:
+ MyImageFrame(wxFrame *parent, const wxBitmap& bitmap)
+ : wxFrame(parent, -1, _T("Double click to save"),
+ wxDefaultPosition, wxDefaultSize,
+ wxCAPTION | wxSYSTEM_MENU),
+ m_bitmap(bitmap)
+ {
+ SetClientSize(bitmap.GetWidth(), bitmap.GetHeight());
+ }
+
+ void OnPaint(wxPaintEvent& WXUNUSED(event))
+ {
+ wxPaintDC dc( this );
+ //TRUE for masked images
+ dc.DrawBitmap( m_bitmap, 0, 0, TRUE );
+ }
+
+ void OnSave(wxCommandEvent& WXUNUSED(event))
+ {
+ wxImage image(m_bitmap);
+
+ int bppselection = wxGetSingleChoiceIndex("Set BMP BPP",
+ "Set BMP BPP",
+ nChoices,
+ bppchoices,
+ this);
+ if ( bppselection == -1 )
+ {
+ // cancelled
+ return;
+ }
+
+ image.SetOption(wxIMAGE_OPTION_BMP_FORMAT, bppvalues[bppselection]);
+
+ wxString deffilename = bppchoices[bppselection];
+ deffilename.Replace(wxT(" "), wxT("_"));
+ deffilename += wxT(".bmp");
+ wxString savefilename = wxFileSelector( wxT("Save Image"),
+ wxT(""),
+ deffilename,
+ (const wxChar *)NULL,
+ wxT("BMP files (*.bmp)|*.bmp|")
+ wxT("PNG files (*.png)|*.png|")
+ wxT("JPEG files (*.jpg)|*.jpg|")
+ wxT("GIF files (*.gif)|*.gif|")
+ wxT("TIFF files (*.tif)|*.tif|")
+ wxT("PCX files (*.pcx)|*.pcx|")
+ wxT("ICO files (*.ico)|*.ico|")
+ wxT("CUR files (*.cur)|*.cur"),
+ wxSAVE);
+
+ if ( savefilename.empty() )
+ return;
+
+ if ( image.GetOptionInt(wxIMAGE_OPTION_BMP_FORMAT) == wxBMP_8BPP_PALETTE )
+ {
+ unsigned char *cmap = new unsigned char [256];
+ for ( int i = 0; i < 256; i++ )
+ cmap[i] = i;
+ image.SetPalette(wxPalette(256, cmap, cmap, cmap));
+
+ delete cmap;
+ }
+
+ bool saved = FALSE;
+
+ wxString extension = savefilename.AfterLast('.').Lower();
+
+ if (extension == "bmp")
+ saved=image.SaveFile(savefilename, wxBITMAP_TYPE_BMP);
+ else if (extension == "png")
+ saved=image.SaveFile(savefilename, wxBITMAP_TYPE_PNG);
+ else if (extension == "pcx")
+ saved=image.SaveFile(savefilename, wxBITMAP_TYPE_PCX);
+ else if ((extension == "tif") || (extension == "tiff"))
+ saved=image.SaveFile(savefilename, wxBITMAP_TYPE_TIF);
+ else if (extension == "jpg")
+ saved=image.SaveFile(savefilename, wxBITMAP_TYPE_JPEG);
+ else if (extension == "pnm")
+ saved=image.SaveFile(savefilename, wxBITMAP_TYPE_PNM);
+ else if (extension == "ico")
+ saved=image.SaveFile(savefilename, wxBITMAP_TYPE_ICO);
+ else if (extension == "cur")
+ {
+ image.Rescale(32,32);
+ image.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_X, 0);
+ image.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_Y, 0);
+ saved=image.SaveFile(savefilename, wxBITMAP_TYPE_CUR);
+ }
+ else
+ wxMessageBox("Unknown file type, see options in file selector.",
+ "Unknown file type",
+ wxOK|wxCENTRE, this);
+ }
+
+private:
+ wxBitmap m_bitmap;
+
+ DECLARE_EVENT_TABLE()
};
// MyApp
class MyApp: public wxApp
{
- public:
-
- MyApp(void);
- virtual bool OnInit(void);
+public:
+ virtual bool OnInit();
};
// main program
IMPLEMENT_DYNAMIC_CLASS(MyCanvas, wxScrolledWindow)
-BEGIN_EVENT_TABLE(MyCanvas,wxScrolledWindow)
- EVT_PAINT (MyCanvas::OnPaint)
+BEGIN_EVENT_TABLE(MyImageFrame, wxFrame)
+ EVT_PAINT(MyImageFrame::OnPaint)
+ EVT_LEFT_DCLICK(MyImageFrame::OnSave)
+END_EVENT_TABLE()
+
+BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
+ EVT_PAINT(MyCanvas::OnPaint)
END_EVENT_TABLE()
-MyCanvas::MyCanvas( wxWindow *parent, const wxWindowID id, const wxPoint &pos, const wxSize &size )
- : wxScrolledWindow( parent, id, pos, size, wxSUNKEN_BORDER )
+MyCanvas::MyCanvas( wxWindow *parent, wxWindowID id,
+ const wxPoint &pos, const wxSize &size )
+ : wxScrolledWindow( parent, id, pos, size, wxSUNKEN_BORDER )
+#if !defined(__WINDOWS__) || wxUSE_XPM_IN_MSW
+ , m_bmpSmileXpm((const char **) smile_xpm)
+ , m_iconSmileXpm((const char **) smile_xpm)
+#endif
{
- wxImage image;
+ my_horse_png = (wxBitmap*) NULL;
+ my_horse_jpeg = (wxBitmap*) NULL;
+ my_horse_gif = (wxBitmap*) NULL;
+ my_horse_bmp = (wxBitmap*) NULL;
+ my_horse_pcx = (wxBitmap*) NULL;
+ my_horse_pnm = (wxBitmap*) NULL;
+ my_horse_tiff = (wxBitmap*) NULL;
+ my_horse_xpm = (wxBitmap*) NULL;
+ my_horse_ico32 = (wxBitmap*) NULL;
+ my_horse_ico16 = (wxBitmap*) NULL;
+ my_horse_ico = (wxBitmap*) NULL;
+ my_horse_cur = (wxBitmap*) NULL;
+
+ my_smile_xbm = (wxBitmap*) NULL;
+ my_square = (wxBitmap*) NULL;
+ my_anti = (wxBitmap*) NULL;
+
+ SetBackgroundColour(* wxWHITE);
+
+ wxBitmap bitmap( 100, 100 );
+
+ wxMemoryDC dc;
+ dc.SelectObject( bitmap );
+ dc.SetBrush( wxBrush( wxT("orange"), wxSOLID ) );
+ dc.SetPen( *wxBLACK_PEN );
+ dc.DrawRectangle( 0, 0, 100, 100 );
+ dc.SetBrush( *wxWHITE_BRUSH );
+ dc.DrawRectangle( 20, 20, 60, 60 );
+ dc.SelectObject( wxNullBitmap );
+
+ // try to find the directory with our images
+ wxString dir;
+ if ( wxFile::Exists(wxT("./horse.png")) )
+ dir = "./";
+ else if ( wxFile::Exists(wxT("../horse.png")) )
+ dir = "../";
+ else
+ wxLogWarning(wxT("Can't find image files in either '.' or '..'!"));
+
+ wxImage image = bitmap.ConvertToImage();
+
+#if wxUSE_LIBPNG
+ if ( !image.SaveFile( dir + wxString("test.png"), wxBITMAP_TYPE_PNG ))
+ wxLogError(wxT("Can't save file"));
+
+ image.Destroy();
+
+ image.LoadFile( dir + wxString("test.png") );
+ my_square = new wxBitmap( image );
+
+ image.Destroy();
+
+ if ( !image.LoadFile( dir + wxString("horse.png")) )
+ wxLogError(wxT("Can't load PNG image"));
+ else
+ my_horse_png = new wxBitmap( image );
+#endif // wxUSE_LIBPNG
+
+#if wxUSE_LIBJPEG
+ image.Destroy();
+
+ if ( !image.LoadFile( dir + wxString("horse.jpg")) )
+ wxLogError(wxT("Can't load JPG image"));
+ else
+ my_horse_jpeg = new wxBitmap( image );
+#endif // wxUSE_LIBJPEG
+
+#if wxUSE_GIF
+ image.Destroy();
+
+ if ( !image.LoadFile( dir + wxString("horse.gif")) )
+ wxLogError(wxT("Can't load GIF image"));
+ else
+ my_horse_gif = new wxBitmap( image );
+#endif
+
+#if wxUSE_PCX
+ image.Destroy();
+
+ if ( !image.LoadFile( dir + wxString("horse.pcx"), wxBITMAP_TYPE_PCX ) )
+ wxLogError(wxT("Can't load PCX image"));
+ else
+ my_horse_pcx = new wxBitmap( image );
+#endif
+
+ image.Destroy();
+
+ if ( !image.LoadFile( dir + wxString("horse.bmp"), wxBITMAP_TYPE_BMP ) )
+ wxLogError(wxT("Can't load BMP image"));
+ else
+ my_horse_bmp = new wxBitmap( image );
+
+#if wxUSE_XPM
+ image.Destroy();
+
+ if ( !image.LoadFile( dir + wxString("horse.xpm"), wxBITMAP_TYPE_XPM ) )
+ wxLogError(wxT("Can't load XPM image"));
+ else
+ my_horse_xpm = new wxBitmap( image );
+
+ if ( !image.SaveFile( dir + wxString("test.xpm"), wxBITMAP_TYPE_XPM ))
+ wxLogError(wxT("Can't save file"));
+#endif
+
+#if wxUSE_PNM
+ image.Destroy();
+
+ if ( !image.LoadFile( dir + wxString("horse.pnm"), wxBITMAP_TYPE_PNM ) )
+ wxLogError(wxT("Can't load PNM image"));
+ else
+ my_horse_pnm = new wxBitmap( image );
+#endif
+
+#if wxUSE_LIBTIFF
+ image.Destroy();
+
+ if ( !image.LoadFile( dir + wxString("horse.tif"), wxBITMAP_TYPE_TIF ) )
+ wxLogError(wxT("Can't load TIFF image"));
+ else
+ my_horse_tiff = new wxBitmap( image );
+#endif
+
+ CreateAntiAliasedBitmap();
+
+ my_smile_xbm = new wxBitmap( (const char*)smile_bits, smile_width,
+ smile_height, 1 );
+
+#if !defined(__WINDOWS__) || wxUSE_XPM_IN_MSW
+ // demonstrates XPM automatically using the mask when saving
+ if ( m_bmpSmileXpm.Ok() )
+ m_bmpSmileXpm.SaveFile("saved.xpm", wxBITMAP_TYPE_XPM);
+#endif
+
+#if wxUSE_ICO_CUR
+ image.Destroy();
+
+ if ( !image.LoadFile( dir + wxString("horse.ico"), wxBITMAP_TYPE_ICO, 0 ) )
+ wxLogError(wxT("Can't load first ICO image"));
+ else
+ my_horse_ico32 = new wxBitmap( image );
+
+ image.Destroy();
+
+ if ( !image.LoadFile( dir + wxString("horse.ico"), wxBITMAP_TYPE_ICO, 1 ) )
+ wxLogError(wxT("Can't load second ICO image"));
+ else
+ my_horse_ico16 = new wxBitmap( image );
+
+ image.Destroy();
+
+ if ( !image.LoadFile( dir + wxString("horse.ico") ) )
+ wxLogError(wxT("Can't load best ICO image"));
+ else
+ my_horse_ico = new wxBitmap( image );
+
+ image.Destroy();
+
+ if ( !image.LoadFile( dir + wxString("horse.cur"), wxBITMAP_TYPE_CUR ) )
+ wxLogError(wxT("Can't load best ICO image"));
+ else
+ {
+ my_horse_cur = new wxBitmap( image );
+ xH = 30 + image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_X) ;
+ yH = 2420 + image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_Y) ;
+ }
+
+#endif
- wxBitmap bitmap( 100, 100 );
-
- wxMemoryDC dc;
- dc.SelectObject( bitmap );
- dc.SetBrush( wxBrush( "orange", wxSOLID ) );
- dc.SetPen( *wxWHITE_PEN );
- dc.DrawRectangle( 0, 0, 100, 100 );
- dc.SelectObject( wxNullBitmap );
-
- image = bitmap.ConvertToImage();
- image.SaveFile( "../test.png", wxBITMAP_TYPE_PNG );
-
- image.LoadFile( "../horse.png", wxBITMAP_TYPE_PNG );
- my_horse = new wxBitmap( image );
-
- image.LoadFile( "../test.png", wxBITMAP_TYPE_PNG );
- my_square = new wxBitmap( image );
}
-MyCanvas::~MyCanvas(void)
+MyCanvas::~MyCanvas()
{
- delete my_horse;
- delete my_square;
+ delete my_horse_pnm;
+ delete my_horse_png;
+ delete my_horse_jpeg;
+ delete my_horse_gif;
+ delete my_horse_bmp;
+ delete my_horse_pcx;
+ delete my_horse_tiff;
+ delete my_horse_xpm;
+ delete my_horse_ico32;
+ delete my_horse_ico16;
+ delete my_horse_ico;
+ delete my_smile_xbm;
+ delete my_square;
+ delete my_anti;
}
void MyCanvas::OnPaint( wxPaintEvent &WXUNUSED(event) )
{
- wxPaintDC dc( this );
- PrepareDC( dc );
-
- dc.DrawText( "Loaded image", 30, 100 );
- if (my_square->Ok()) dc.DrawBitmap( *my_square, 30, 120 );
-
- dc.DrawText( "Drawn directly", 150, 100 );
- dc.SetBrush( wxBrush( "orange", wxSOLID ) );
- dc.SetPen( *wxWHITE_PEN );
- dc.DrawRectangle( 150, 120, 100, 100 );
-
- if (my_horse->Ok()) dc.DrawBitmap( *my_horse, 30, 240 );
+ wxPaintDC dc( this );
+ PrepareDC( dc );
+
+ dc.DrawText( "Loaded image", 30, 10 );
+ if (my_square && my_square->Ok()) dc.DrawBitmap( *my_square, 30, 30 );
+
+ dc.DrawText( "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 && my_anti->Ok())
+ dc.DrawBitmap( *my_anti, 280, 30 );
+
+ dc.DrawText( "PNG handler", 30, 135 );
+ if (my_horse_png && 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( "GetSubBitmap()", 280, 190 );
+ dc.DrawBitmap( sub, 280, 210 );
+ }
+
+ dc.DrawText( "JPEG handler", 30, 365 );
+ if (my_horse_jpeg && my_horse_jpeg->Ok())
+ dc.DrawBitmap( *my_horse_jpeg, 30, 380 );
+
+ dc.DrawText( "GIF handler", 30, 595 );
+ if (my_horse_gif && my_horse_gif->Ok())
+ dc.DrawBitmap( *my_horse_gif, 30, 610 );
+
+ dc.DrawText( "PCX handler", 30, 825 );
+ if (my_horse_pcx && my_horse_pcx->Ok())
+ dc.DrawBitmap( *my_horse_pcx, 30, 840 );
+
+ dc.DrawText( "BMP handler", 30, 1055 );
+ if (my_horse_bmp && my_horse_bmp->Ok())
+ dc.DrawBitmap( *my_horse_bmp, 30, 1070 );
+
+ dc.DrawText( "PNM handler", 30, 1285 );
+ if (my_horse_pnm && my_horse_pnm->Ok())
+ dc.DrawBitmap( *my_horse_pnm, 30, 1300 );
+
+ dc.DrawText( "TIFF handler", 30, 1515 );
+ if (my_horse_tiff && my_horse_tiff->Ok())
+ dc.DrawBitmap( *my_horse_tiff, 30, 1530 );
+
+ dc.DrawText( "XPM handler", 30, 1745 );
+ if (my_horse_xpm && my_horse_xpm->Ok())
+ dc.DrawBitmap( *my_horse_xpm, 30, 1760 );
+
+
+ if (my_smile_xbm && my_smile_xbm->Ok())
+ {
+ dc.DrawText( "XBM bitmap", 30, 1975 );
+ dc.DrawText( "(green on red)", 30, 1990 );
+ dc.SetTextForeground( wxT("GREEN") );
+ dc.SetTextBackground( wxT("RED") );
+ dc.DrawBitmap( *my_smile_xbm, 30, 2010 );
+
+ dc.SetTextForeground( wxT("BLACK") );
+ dc.DrawText( "After wxImage conversion", 150, 1975 );
+ dc.DrawText( "(red on white)", 150, 1990 );
+ 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( i.ConvertToBitmap(), 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( i.ConvertToBitmap(), 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.ConvertToBitmap() );
}
// 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_SIZE (MyFrame::OnSize)
+ EVT_MENU (ID_NEW, MyFrame::OnNewFrame)
END_EVENT_TABLE()
-MyFrame::MyFrame(void) :
- wxFrame( (wxFrame *) NULL, -1, "wxImage sample", wxPoint(20,20), wxSize(470,360) )
+MyFrame::MyFrame()
+ : wxFrame( (wxFrame *)NULL, -1, "wxImage sample",
+ wxPoint(20,20), wxSize(470,360) )
{
wxMenu *file_menu = new wxMenu();
- file_menu->Append( ID_ABOUT, "About..");
- file_menu->Append( ID_QUIT, "Exit");
-
+ 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");
- menu_bar->Show( TRUE );
-
+ 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) );
- m_canvas->SetScrollbars( 10, 10, 50, 50 );
+
+ // 500 width * 2500 height
+ m_canvas->SetScrollbars( 10, 10, 50, 250 );
}
void MyFrame::OnQuit( wxCommandEvent &WXUNUSED(event) )
void MyFrame::OnAbout( wxCommandEvent &WXUNUSED(event) )
{
- (void) wxMessageBox( "wxImage demo\nRobert Roebling (c) 1998", "About wxImage Demo", wxOK );
+ (void)wxMessageBox( "wxImage demo\n"
+ "Robert Roebling (c) 1998,2000",
+ "About wxImage Demo", wxICON_INFORMATION | wxOK );
}
-void MyFrame::OnSize( wxSizeEvent &WXUNUSED(event) )
+void MyFrame::OnNewFrame( wxCommandEvent &WXUNUSED(event) )
{
- int w,h;
- GetClientSize( &w, &h );
- m_canvas->SetSize( w, h );
+ 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, image.ConvertToBitmap()))->Show();
}
//-----------------------------------------------------------------------------
// MyApp
//-----------------------------------------------------------------------------
-MyApp::MyApp(void) :
- wxApp( )
-{
-}
-
-bool MyApp::OnInit(void)
+bool MyApp::OnInit()
{
+#if wxUSE_LIBPNG
wxImage::AddHandler( new wxPNGHandler );
-
- wxFrame *frame = new MyFrame();
- frame->Show( TRUE );
-
- return TRUE;
-}
+#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;
+}
projects / wxWidgets.git / blobdiff