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git.saurik.com Git - wxWidgets.git/blob - samples/image/image.cpp
4 * Author: Robert Roebling
6 * Copyright: (C) 1998, Robert Roebling
10 // For compilers that support precompilation, includes "wx/wx.h".
11 #include "wx/wxprec.h"
30 class MyCanvas
: public wxScrolledWindow
34 MyCanvas( wxWindow
*parent
, wxWindowID
, const wxPoint
&pos
, const wxSize
&size
);
36 void OnPaint( wxPaintEvent
&event
);
37 void CreateAntiAliasedBitmap();
43 DECLARE_DYNAMIC_CLASS(MyCanvas
)
49 class MyFrame
: public wxFrame
54 void OnAbout( wxCommandEvent
&event
);
55 void OnQuit( wxCommandEvent
&event
);
59 DECLARE_DYNAMIC_CLASS(MyFrame
)
65 class MyApp
: public wxApp
68 virtual bool OnInit();
77 IMPLEMENT_DYNAMIC_CLASS(MyCanvas
, wxScrolledWindow
)
79 BEGIN_EVENT_TABLE(MyCanvas
, wxScrolledWindow
)
80 EVT_PAINT(MyCanvas::OnPaint
)
83 MyCanvas::MyCanvas( wxWindow
*parent
, wxWindowID id
,
84 const wxPoint
&pos
, const wxSize
&size
)
85 : wxScrolledWindow( parent
, id
, pos
, size
, wxSUNKEN_BORDER
)
87 my_horse
= (wxBitmap
*) NULL
;
88 my_square
= (wxBitmap
*) NULL
;
89 my_anti
= (wxBitmap
*) NULL
;
91 SetBackgroundColour(* wxWHITE
);
93 wxBitmap
bitmap( 100, 100 );
96 dc
.SelectObject( bitmap
);
97 dc
.SetBrush( wxBrush( "orange", wxSOLID
) );
98 dc
.SetPen( *wxWHITE_PEN
);
99 dc
.DrawRectangle( 0, 0, 100, 100 );
100 dc
.SelectObject( wxNullBitmap
);
105 dir
= wxString("../");
108 wxImage
image( bitmap
);
109 image
.SaveFile( dir
+ wxString("test.png"), wxBITMAP_TYPE_PNG
);
111 image
.LoadFile( dir
+ wxString("horse.png"), wxBITMAP_TYPE_PNG
);
112 my_horse
= new wxBitmap( image
.ConvertToBitmap() );
114 image
.LoadFile( dir
+ wxString("test.png"), wxBITMAP_TYPE_PNG
);
115 my_square
= new wxBitmap( image
.ConvertToBitmap() );
117 CreateAntiAliasedBitmap();
120 MyCanvas::~MyCanvas()
127 void MyCanvas::OnPaint( wxPaintEvent
&WXUNUSED(event
) )
129 wxPaintDC
dc( this );
132 dc
.DrawText( "Loaded image", 30, 10 );
133 if (my_square
&& my_square
->Ok()) dc
.DrawBitmap( *my_square
, 30, 30 );
135 dc
.DrawText( "Drawn directly", 150, 10 );
136 dc
.SetBrush( wxBrush( "orange", wxSOLID
) );
137 dc
.SetPen( *wxWHITE_PEN
);
138 dc
.DrawRectangle( 150, 30, 100, 100 );
140 if (my_anti
&& my_anti
->Ok()) dc
.DrawBitmap( *my_anti
, 250, 140 );
142 if (my_horse
&& my_horse
->Ok()) dc
.DrawBitmap( *my_horse
, 30, 140 );
145 void MyCanvas::CreateAntiAliasedBitmap()
147 wxBitmap
bitmap( 300, 300 );
151 dc
.SelectObject( bitmap
);
155 dc
.SetFont( wxFont( 24, wxDECORATIVE
, wxDEFAULT
, wxDEFAULT
) );
156 dc
.SetTextForeground( "RED" );
157 dc
.DrawText( "This is anti-aliased Text.", 20, 20 );
158 dc
.DrawText( "And a Rectangle.", 20, 60 );
160 dc
.SetBrush( *wxRED_BRUSH
);
161 dc
.DrawRoundedRectangle( 20, 100, 200, 180, 20 );
163 wxImage
original( bitmap
);
164 wxImage
anti( 150, 150 );
166 /* This is quite slow, but safe. Use wxImage::GetData() for speed instead. */
168 for (int y
= 1; y
< 149; y
++)
169 for (int x
= 1; x
< 149; x
++)
171 int red
= original
.GetRed( x
*2, y
*2 ) +
172 original
.GetRed( x
*2-1, y
*2 ) +
173 original
.GetRed( x
*2, y
*2+1 ) +
174 original
.GetRed( x
*2+1, y
*2+1 );
177 int green
= original
.GetGreen( x
*2, y
*2 ) +
178 original
.GetGreen( x
*2-1, y
*2 ) +
179 original
.GetGreen( x
*2, y
*2+1 ) +
180 original
.GetGreen( x
*2+1, y
*2+1 );
183 int blue
= original
.GetBlue( x
*2, y
*2 ) +
184 original
.GetBlue( x
*2-1, y
*2 ) +
185 original
.GetBlue( x
*2, y
*2+1 ) +
186 original
.GetBlue( x
*2+1, y
*2+1 );
188 anti
.SetRGB( x
, y
, red
, green
, blue
);
190 my_anti
= new wxBitmap( anti
.ConvertToBitmap() );
195 const int ID_QUIT
= 108;
196 const int ID_ABOUT
= 109;
198 IMPLEMENT_DYNAMIC_CLASS( MyFrame
, wxFrame
)
200 BEGIN_EVENT_TABLE(MyFrame
,wxFrame
)
201 EVT_MENU (ID_ABOUT
, MyFrame::OnAbout
)
202 EVT_MENU (ID_QUIT
, MyFrame::OnQuit
)
206 : wxFrame( (wxFrame
*)NULL
, -1, "wxImage sample",
207 wxPoint(20,20), wxSize(470,360) )
209 wxMenu
*file_menu
= new wxMenu();
210 file_menu
->Append( ID_ABOUT
, "About..");
211 file_menu
->Append( ID_QUIT
, "Exit");
213 wxMenuBar
*menu_bar
= new wxMenuBar();
214 menu_bar
->Append(file_menu
, "File");
216 SetMenuBar( menu_bar
);
219 int widths
[] = { -1, 100 };
220 SetStatusWidths( 2, widths
);
222 m_canvas
= new MyCanvas( this, -1, wxPoint(0,0), wxSize(10,10) );
223 m_canvas
->SetScrollbars( 10, 10, 50, 50 );
226 void MyFrame::OnQuit( wxCommandEvent
&WXUNUSED(event
) )
231 void MyFrame::OnAbout( wxCommandEvent
&WXUNUSED(event
) )
233 (void)wxMessageBox( "wxImage demo\n"
234 "Robert Roebling (c) 1998",
235 "About wxImage Demo", wxICON_INFORMATION
| wxOK
);
238 //-----------------------------------------------------------------------------
240 //-----------------------------------------------------------------------------
244 wxFrame
*frame
= new MyFrame();