#include "wx/image.h"
+#include "wx/file.h"
+
// derived classes
class MyFrame;
void OnPaint( wxPaintEvent &event );
void CreateAntiAliasedBitmap();
- wxBitmap *my_horse;
+ wxBitmap *my_horse_png;
+ wxBitmap *my_horse_jpeg;
+ wxBitmap *my_horse_gif;
+ wxBitmap *my_horse_bmp;
wxBitmap *my_square;
wxBitmap *my_anti;
EVT_PAINT(MyCanvas::OnPaint)
END_EVENT_TABLE()
-MyCanvas::MyCanvas( wxWindow *parent, const wxWindowID id,
+MyCanvas::MyCanvas( wxWindow *parent, wxWindowID id,
const wxPoint &pos, const wxSize &size )
: wxScrolledWindow( parent, id, pos, size, wxSUNKEN_BORDER )
{
+ my_horse_png = (wxBitmap*) NULL;
+ my_horse_jpeg = (wxBitmap*) NULL;
+ my_horse_gif = (wxBitmap*) NULL;
+ my_horse_bmp = (wxBitmap*) NULL;
+ my_square = (wxBitmap*) NULL;
+ my_anti = (wxBitmap*) NULL;
+
SetBackgroundColour(* wxWHITE);
wxBitmap bitmap( 100, 100 );
dc.DrawRectangle( 0, 0, 100, 100 );
dc.SelectObject( wxNullBitmap );
- wxString dir("");
-
-#ifdef __WXGTK__
- dir = wxString("../");
-#endif
+ // 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 );
- image.SaveFile( dir + wxString("test.png"), wxBITMAP_TYPE_PNG );
- image.LoadFile( dir + wxString("horse.png"), wxBITMAP_TYPE_PNG );
- my_horse = new wxBitmap( image.ConvertToBitmap() );
+ 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() );
+
+ if ( !image.LoadFile( dir + wxString("horse.jpg"), wxBITMAP_TYPE_JPEG ) )
+ wxLogError("Can't load JPG image");
+ else
+ my_horse_jpeg = new wxBitmap( image.ConvertToBitmap() );
+
+ if ( !image.LoadFile( dir + wxString("horse.gif"), wxBITMAP_TYPE_GIF ) )
+ wxLogError("Can't load GIF image");
+ else
+ my_horse_gif = new wxBitmap( image.ConvertToBitmap() );
+
+ if ( !image.LoadFile( dir + wxString("horse.bmp"), wxBITMAP_TYPE_BMP ) )
+ wxLogError("Can't load BMP image");
+ else
+ my_horse_bmp = new wxBitmap( image.ConvertToBitmap() );
image.LoadFile( dir + wxString("test.png"), wxBITMAP_TYPE_PNG );
my_square = new wxBitmap( image.ConvertToBitmap() );
MyCanvas::~MyCanvas()
{
- delete my_horse;
+ delete my_horse_png;
+ delete my_horse_jpeg;
+ delete my_horse_gif;
+ delete my_horse_bmp;
delete my_square;
delete my_anti;
}
PrepareDC( dc );
dc.DrawText( "Loaded image", 30, 10 );
- if (my_square->Ok()) dc.DrawBitmap( *my_square, 30, 30 );
-
+ 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( *wxWHITE_PEN );
dc.DrawRectangle( 150, 30, 100, 100 );
- if (my_horse->Ok()) dc.DrawBitmap( *my_horse, 30, 140 );
+ if (my_anti && my_anti->Ok()) dc.DrawBitmap( *my_anti, 250, 140 );
+
+ dc.DrawText( "PNG handler", 30, 135 );
+ if (my_horse_png && my_horse_png->Ok()) dc.DrawBitmap( *my_horse_png, 30, 150 );
+
+ 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 );
- if (my_anti->Ok()) dc.DrawBitmap( *my_anti, 250, 140 );
+ dc.DrawText( "BMP handler", 30, 815 );
+ if (my_horse_bmp && my_horse_bmp->Ok()) dc.DrawBitmap( *my_horse_bmp, 30, 830 );
}
void MyCanvas::CreateAntiAliasedBitmap()
{
wxBitmap bitmap( 300, 300 );
+
wxMemoryDC dc;
+
dc.SelectObject( bitmap );
-
- dc.SetPen( *wxTRANSPARENT_PEN );
-
+
dc.Clear();
dc.SetFont( wxFont( 24, wxDECORATIVE, wxDEFAULT, wxDEFAULT ) );
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++)
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_ABOUT, "&About..");
+ file_menu->Append( ID_QUIT, "E&xit");
wxMenuBar *menu_bar = new wxMenuBar();
- menu_bar->Append(file_menu, "File");
+ menu_bar->Append(file_menu, "&File");
SetMenuBar( menu_bar );
SetStatusWidths( 2, widths );
m_canvas = new MyCanvas( this, -1, wxPoint(0,0), wxSize(10,10) );
- m_canvas->SetScrollbars( 10, 10, 50, 50 );
+ m_canvas->SetScrollbars( 10, 10, 50, 100 );
}
void MyFrame::OnQuit( wxCommandEvent &WXUNUSED(event) )
void MyFrame::OnAbout( wxCommandEvent &WXUNUSED(event) )
{
(void)wxMessageBox( "wxImage demo\n"
+ "\n"
"Robert Roebling (c) 1998",
"About wxImage Demo", wxICON_INFORMATION | wxOK );
}
bool MyApp::OnInit()
{
+#if wxUSE_LIBPNG
wxImage::AddHandler( new wxPNGHandler );
+#endif
+
+#if wxUSE_LIBJPEG
+ wxImage::AddHandler( new wxJPEGHandler );
+#endif
+
+ wxImage::AddHandler( new wxGIFHandler );
wxFrame *frame = new MyFrame();
frame->Show( TRUE );
projects / wxWidgets.git / blobdiff