81278df2b1
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@5865 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
471 lines
12 KiB
C++
471 lines
12 KiB
C++
/*
|
|
* 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 "smile.xbm"
|
|
#include "smile.xpm"
|
|
|
|
// derived classes
|
|
|
|
class MyFrame;
|
|
class MyApp;
|
|
|
|
// MyCanvas
|
|
|
|
class MyCanvas: public wxScrolledWindow
|
|
{
|
|
public:
|
|
MyCanvas() {};
|
|
MyCanvas( wxWindow *parent, wxWindowID, const wxPoint &pos, const wxSize &size );
|
|
~MyCanvas();
|
|
void OnPaint( wxPaintEvent &event );
|
|
void CreateAntiAliasedBitmap();
|
|
|
|
wxBitmap *my_horse_png;
|
|
wxBitmap *my_horse_jpeg;
|
|
wxBitmap *my_horse_gif;
|
|
wxBitmap *my_horse_bmp;
|
|
wxBitmap *my_horse_pcx;
|
|
wxBitmap *my_horse_pnm;
|
|
wxBitmap *my_horse_tiff;
|
|
wxBitmap *my_smile_xbm;
|
|
wxBitmap *my_square;
|
|
wxBitmap *my_anti;
|
|
|
|
protected:
|
|
wxBitmap m_bmpSmileXpm;
|
|
wxIcon m_iconSmileXpm;
|
|
|
|
private:
|
|
DECLARE_DYNAMIC_CLASS(MyCanvas)
|
|
DECLARE_EVENT_TABLE()
|
|
};
|
|
|
|
// MyFrame
|
|
|
|
class MyFrame: public wxFrame
|
|
{
|
|
public:
|
|
MyFrame();
|
|
|
|
void OnAbout( wxCommandEvent &event );
|
|
void OnQuit( wxCommandEvent &event );
|
|
|
|
MyCanvas *m_canvas;
|
|
|
|
private:
|
|
DECLARE_DYNAMIC_CLASS(MyFrame)
|
|
DECLARE_EVENT_TABLE()
|
|
};
|
|
|
|
// MyApp
|
|
|
|
class MyApp: public wxApp
|
|
{
|
|
public:
|
|
virtual bool OnInit();
|
|
};
|
|
|
|
// main program
|
|
|
|
IMPLEMENT_APP(MyApp)
|
|
|
|
// MyCanvas
|
|
|
|
IMPLEMENT_DYNAMIC_CLASS(MyCanvas, wxScrolledWindow)
|
|
|
|
BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
|
|
EVT_PAINT(MyCanvas::OnPaint)
|
|
END_EVENT_TABLE()
|
|
|
|
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
|
|
{
|
|
my_horse_png = (wxBitmap*) NULL;
|
|
my_horse_jpeg = (wxBitmap*) NULL;
|
|
my_horse_gif = (wxBitmap*) NULL;
|
|
my_horse_bmp = (wxBitmap*) NULL;
|
|
my_horse_pcx = (wxBitmap*) NULL;
|
|
my_horse_pnm = (wxBitmap*) NULL;
|
|
my_horse_tiff = (wxBitmap*) NULL;
|
|
my_smile_xbm = (wxBitmap*) NULL;
|
|
my_square = (wxBitmap*) NULL;
|
|
my_anti = (wxBitmap*) NULL;
|
|
|
|
SetBackgroundColour(* wxWHITE);
|
|
|
|
wxBitmap bitmap( 100, 100 );
|
|
|
|
wxMemoryDC dc;
|
|
dc.SelectObject( bitmap );
|
|
dc.SetBrush( wxBrush( "orange", wxSOLID ) );
|
|
dc.SetPen( *wxBLACK_PEN );
|
|
dc.DrawRectangle( 0, 0, 100, 100 );
|
|
dc.SetBrush( *wxWHITE_BRUSH );
|
|
dc.DrawRectangle( 20, 20, 60, 60 );
|
|
dc.SelectObject( wxNullBitmap );
|
|
|
|
// try to find the directory with our images
|
|
wxString dir;
|
|
if ( wxFile::Exists("./horse.png") )
|
|
dir = "./";
|
|
else if ( wxFile::Exists("../horse.png") )
|
|
dir = "../";
|
|
else
|
|
wxLogWarning("Can't find image files in either '.' or '..'!");
|
|
|
|
wxImage image( bitmap );
|
|
|
|
#if wxUSE_LIBPNG
|
|
if ( !image.SaveFile( dir + wxString("test.png"), wxBITMAP_TYPE_PNG ) )
|
|
wxLogError("Can't save file");
|
|
|
|
if ( !image.LoadFile( dir + wxString("horse.png"), wxBITMAP_TYPE_PNG ) )
|
|
wxLogError("Can't load PNG image");
|
|
else
|
|
my_horse_png = new wxBitmap( image.ConvertToBitmap() );
|
|
#endif // wxUSE_LIBPNG
|
|
|
|
#if wxUSE_LIBJPEG
|
|
if ( !image.LoadFile( dir + wxString("horse.jpg") ) )
|
|
wxLogError("Can't load JPG image");
|
|
else
|
|
my_horse_jpeg = new wxBitmap( image.ConvertToBitmap() );
|
|
#endif // wxUSE_LIBJPEG
|
|
|
|
#if wxUSE_GIF
|
|
if ( !image.LoadFile( dir + wxString("horse.gif") ) )
|
|
wxLogError("Can't load GIF image");
|
|
else
|
|
my_horse_gif = new wxBitmap( image.ConvertToBitmap() );
|
|
#endif
|
|
|
|
#if wxUSE_PCX
|
|
if ( !image.LoadFile( dir + wxString("horse.pcx"), wxBITMAP_TYPE_PCX ) )
|
|
wxLogError("Can't load PCX image");
|
|
else
|
|
my_horse_pcx = new wxBitmap( image.ConvertToBitmap() );
|
|
|
|
image.LoadFile( dir + wxString("test.pcx") );
|
|
my_square = new wxBitmap( image.ConvertToBitmap() );
|
|
#endif
|
|
|
|
if ( !image.LoadFile( dir + wxString("horse.bmp"), wxBITMAP_TYPE_BMP ) )
|
|
wxLogError("Can't load BMP image");
|
|
else
|
|
my_horse_bmp = new wxBitmap( image.ConvertToBitmap() );
|
|
|
|
#if wxUSE_PNM
|
|
if ( !image.LoadFile( dir + wxString("horse.pnm"), wxBITMAP_TYPE_PNM ) )
|
|
wxLogError("Can't load PNM image");
|
|
else
|
|
my_horse_pnm = new wxBitmap( image.ConvertToBitmap() );
|
|
#endif
|
|
|
|
#if wxUSE_LIBTIFF
|
|
if ( !image.LoadFile( dir + wxString("horse.tif"), wxBITMAP_TYPE_TIF ) )
|
|
wxLogError("Can't load TIFF image");
|
|
else
|
|
my_horse_tiff = new wxBitmap( image.ConvertToBitmap() );
|
|
#endif
|
|
|
|
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
|
|
}
|
|
|
|
MyCanvas::~MyCanvas()
|
|
{
|
|
delete my_horse_pnm;
|
|
delete my_horse_png;
|
|
delete my_horse_jpeg;
|
|
delete my_horse_gif;
|
|
delete my_horse_bmp;
|
|
delete my_horse_pcx;
|
|
delete my_horse_tiff;
|
|
delete my_smile_xbm;
|
|
delete my_square;
|
|
delete my_anti;
|
|
}
|
|
|
|
void MyCanvas::OnPaint( wxPaintEvent &WXUNUSED(event) )
|
|
{
|
|
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( "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 );
|
|
|
|
if (my_smile_xbm && my_smile_xbm->Ok())
|
|
{
|
|
dc.DrawText( "XBM bitmap", 30, 1745 );
|
|
dc.SetTextForeground( "RED" );
|
|
dc.SetTextBackground( "GREEN" );
|
|
dc.DrawBitmap( *my_smile_xbm, 30, 1760 );
|
|
|
|
dc.DrawText( "After wxImage conversion", 150, 1745 );
|
|
wxImage i( *my_smile_xbm );
|
|
i.SetMaskColour( 0,0,0 );
|
|
i.Replace( 255,255,255,
|
|
wxRED_PEN->GetColour().Red(),
|
|
wxRED_PEN->GetColour().Green(),
|
|
wxRED_PEN->GetColour().Blue() );
|
|
dc.DrawBitmap( i.ConvertToBitmap(), 150, 1760, TRUE );
|
|
}
|
|
dc.SetTextForeground( "BLACK" );
|
|
|
|
wxBitmap mono( 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, 1845 );
|
|
dc.SetTextForeground( "RED" );
|
|
dc.SetTextBackground( "GREEN" );
|
|
dc.DrawBitmap( mono, 30, 1860 );
|
|
|
|
dc.SetTextForeground( "BLACK" );
|
|
dc.DrawText( "After wxImage conversion", 150, 1845 );
|
|
dc.SetTextForeground( "RED" );
|
|
wxImage i( mono );
|
|
i.SetMaskColour( 255,255,255 );
|
|
i.Replace( 0,0,0,
|
|
wxRED_PEN->GetColour().Red(),
|
|
wxRED_PEN->GetColour().Green(),
|
|
wxRED_PEN->GetColour().Blue() );
|
|
dc.DrawBitmap( i.ConvertToBitmap(), 150, 1860, TRUE );
|
|
dc.SetTextForeground( "BLACK" );
|
|
}
|
|
|
|
dc.DrawText("XPM bitmap", 30, 1950);
|
|
if ( m_bmpSmileXpm.Ok() )
|
|
{
|
|
dc.DrawBitmap(m_bmpSmileXpm, 30, 1975, TRUE);
|
|
}
|
|
|
|
dc.DrawText("XPM icon", 150, 1950);
|
|
if ( m_iconSmileXpm.Ok() )
|
|
{
|
|
dc.DrawIcon(m_iconSmileXpm, 150, 1975);
|
|
}
|
|
}
|
|
|
|
void MyCanvas::CreateAntiAliasedBitmap()
|
|
{
|
|
wxBitmap bitmap( 300, 300 );
|
|
|
|
wxMemoryDC dc;
|
|
|
|
dc.SelectObject( bitmap );
|
|
|
|
dc.Clear();
|
|
|
|
dc.SetFont( wxFont( 24, wxDECORATIVE, wxNORMAL, wxNORMAL) );
|
|
dc.SetTextForeground( "RED" );
|
|
dc.DrawText( "This is anti-aliased Text.", 20, 20 );
|
|
dc.DrawText( "And a Rectangle.", 20, 60 );
|
|
|
|
dc.SetBrush( *wxRED_BRUSH );
|
|
dc.SetPen( *wxTRANSPARENT_PEN );
|
|
dc.DrawRoundedRectangle( 20, 100, 200, 180, 20 );
|
|
|
|
wxImage original( bitmap );
|
|
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;
|
|
|
|
IMPLEMENT_DYNAMIC_CLASS( MyFrame, wxFrame )
|
|
|
|
BEGIN_EVENT_TABLE(MyFrame,wxFrame)
|
|
EVT_MENU (ID_ABOUT, MyFrame::OnAbout)
|
|
EVT_MENU (ID_QUIT, MyFrame::OnQuit)
|
|
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_ABOUT, "&About...");
|
|
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 * 2100 height
|
|
m_canvas->SetScrollbars( 10, 10, 50, 210 );
|
|
}
|
|
|
|
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 );
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// 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
|
|
|
|
wxFrame *frame = new MyFrame();
|
|
frame->Show( TRUE );
|
|
|
|
return TRUE;
|
|
}
|
|
|