]> git.saurik.com Git - wxWidgets.git/blob - samples/image/image.cpp
Minor tweek for WXPM
[wxWidgets.git] / samples / image / image.cpp
1 /*
2 * Program: image
3 *
4 * Author: Robert Roebling
5 *
6 * Copyright: (C) 1998, Robert Roebling
7 *
8 */
9
10 // For compilers that support precompilation, includes "wx/wx.h".
11 #include "wx/wxprec.h"
12
13 #ifdef __BORLANDC__
14 #pragma hdrstop
15 #endif
16
17 #ifndef WX_PRECOMP
18 #include "wx/wx.h"
19 #endif
20
21 #include "wx/image.h"
22
23 #include "wx/file.h"
24
25 // derived classes
26
27 class MyFrame;
28 class MyApp;
29
30 // MyCanvas
31
32 class MyCanvas: public wxScrolledWindow
33 {
34 public:
35 MyCanvas() {};
36 MyCanvas( wxWindow *parent, wxWindowID, const wxPoint &pos, const wxSize &size );
37 ~MyCanvas();
38 void OnPaint( wxPaintEvent &event );
39 void CreateAntiAliasedBitmap();
40
41 wxBitmap *my_horse_png;
42 wxBitmap *my_horse_jpeg;
43 wxBitmap *my_horse_gif;
44 wxBitmap *my_horse_bmp;
45 wxBitmap *my_horse_pcx;
46 wxBitmap *my_horse_pnm;
47 wxBitmap *my_square;
48 wxBitmap *my_anti;
49
50 DECLARE_DYNAMIC_CLASS(MyCanvas)
51 DECLARE_EVENT_TABLE()
52 };
53
54 // MyFrame
55
56 class MyFrame: public wxFrame
57 {
58 public:
59 MyFrame();
60
61 void OnAbout( wxCommandEvent &event );
62 void OnQuit( wxCommandEvent &event );
63
64 MyCanvas *m_canvas;
65
66 DECLARE_DYNAMIC_CLASS(MyFrame)
67 DECLARE_EVENT_TABLE()
68 };
69
70 // MyApp
71
72 class MyApp: public wxApp
73 {
74 public:
75 virtual bool OnInit();
76 };
77
78 // main program
79
80 IMPLEMENT_APP(MyApp)
81
82 // MyCanvas
83
84 IMPLEMENT_DYNAMIC_CLASS(MyCanvas, wxScrolledWindow)
85
86 BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
87 EVT_PAINT(MyCanvas::OnPaint)
88 END_EVENT_TABLE()
89
90 MyCanvas::MyCanvas( wxWindow *parent, wxWindowID id,
91 const wxPoint &pos, const wxSize &size )
92 : wxScrolledWindow( parent, id, pos, size, wxSUNKEN_BORDER )
93 {
94 my_horse_png = (wxBitmap*) NULL;
95 my_horse_jpeg = (wxBitmap*) NULL;
96 my_horse_gif = (wxBitmap*) NULL;
97 my_horse_bmp = (wxBitmap*) NULL;
98 my_horse_pcx = (wxBitmap*) NULL;
99 my_horse_pnm = (wxBitmap*) NULL;
100 my_square = (wxBitmap*) NULL;
101 my_anti = (wxBitmap*) NULL;
102
103 SetBackgroundColour(* wxWHITE);
104
105 wxBitmap bitmap( 100, 100 );
106
107 wxMemoryDC dc;
108 dc.SelectObject( bitmap );
109 dc.SetBrush( wxBrush( "orange", wxSOLID ) );
110 dc.SetPen( *wxWHITE_PEN );
111 dc.DrawRectangle( 0, 0, 100, 100 );
112 dc.SelectObject( wxNullBitmap );
113
114 // try to find the directory with our images
115 wxString dir;
116 if ( wxFile::Exists("./horse.png") )
117 dir = "./";
118 else if ( wxFile::Exists("../horse.png") )
119 dir = "../";
120 else
121 wxLogWarning("Can't find image files in either '.' or '..'!");
122
123 wxImage image( bitmap );
124
125 if ( !image.SaveFile( dir + wxString("test.png"), wxBITMAP_TYPE_PNG ) )
126 wxLogError("Can't save file");
127
128 if ( !image.LoadFile( dir + wxString("horse.png"), wxBITMAP_TYPE_PNG ) )
129 wxLogError("Can't load PNG image");
130 else
131 my_horse_png = new wxBitmap( image.ConvertToBitmap() );
132
133 if ( !image.LoadFile( dir + wxString("horse.jpg") ) )
134 wxLogError("Can't load JPG image");
135 else
136 my_horse_jpeg = new wxBitmap( image.ConvertToBitmap() );
137
138 #if wxUSE_GIF
139 if ( !image.LoadFile( dir + wxString("horse.gif") ) )
140 wxLogError("Can't load GIF image");
141 else
142 my_horse_gif = new wxBitmap( image.ConvertToBitmap() );
143 #endif
144
145 #if wxUSE_PCX
146 if ( !image.LoadFile( dir + wxString("horse.pcx"), wxBITMAP_TYPE_PCX ) )
147 wxLogError("Can't load PCX image");
148 else
149 my_horse_pcx = new wxBitmap( image.ConvertToBitmap() );
150 #endif
151
152 if ( !image.LoadFile( dir + wxString("horse.bmp"), wxBITMAP_TYPE_BMP ) )
153 wxLogError("Can't load BMP image");
154 else
155 my_horse_bmp = new wxBitmap( image.ConvertToBitmap() );
156
157 #if wxUSE_PNM
158 if ( !image.LoadFile( dir + wxString("horse.pnm"), wxBITMAP_TYPE_PNM ) )
159 wxLogError("Can't load PNM image");
160 else
161 my_horse_pnm = new wxBitmap( image.ConvertToBitmap() );
162 #endif
163
164 image.LoadFile( dir + wxString("test.png") );
165 my_square = new wxBitmap( image.ConvertToBitmap() );
166
167 CreateAntiAliasedBitmap();
168 }
169
170 MyCanvas::~MyCanvas()
171 {
172 delete my_horse_pnm;
173 delete my_horse_png;
174 delete my_horse_jpeg;
175 delete my_horse_gif;
176 delete my_horse_bmp;
177 delete my_horse_pcx;
178 delete my_square;
179 delete my_anti;
180 }
181
182 void MyCanvas::OnPaint( wxPaintEvent &WXUNUSED(event) )
183 {
184 wxPaintDC dc( this );
185 PrepareDC( dc );
186
187 dc.DrawText( "Loaded image", 30, 10 );
188 if (my_square && my_square->Ok()) dc.DrawBitmap( *my_square, 30, 30 );
189
190 dc.DrawText( "Drawn directly", 150, 10 );
191 dc.SetBrush( wxBrush( "orange", wxSOLID ) );
192 dc.SetPen( *wxWHITE_PEN );
193 dc.DrawRectangle( 150, 30, 100, 100 );
194
195 if (my_anti && my_anti->Ok()) dc.DrawBitmap( *my_anti, 250, 140 );
196
197 dc.DrawText( "PNG handler", 30, 135 );
198 if (my_horse_png && my_horse_png->Ok()) dc.DrawBitmap( *my_horse_png, 30, 150 );
199
200 dc.DrawText( "JPEG handler", 30, 365 );
201 if (my_horse_jpeg && my_horse_jpeg->Ok()) dc.DrawBitmap( *my_horse_jpeg, 30, 380 );
202
203 dc.DrawText( "GIF handler", 30, 595 );
204 if (my_horse_gif && my_horse_gif->Ok()) dc.DrawBitmap( *my_horse_gif, 30, 610 );
205
206 dc.DrawText( "PCX handler", 30, 825 );
207 if (my_horse_pcx && my_horse_pcx->Ok()) dc.DrawBitmap( *my_horse_pcx, 30, 840 );
208
209 dc.DrawText( "BMP handler", 30, 1055 );
210 if (my_horse_bmp && my_horse_bmp->Ok()) dc.DrawBitmap( *my_horse_bmp, 30, 1070 );
211
212 dc.DrawText( "PNM handler", 30, 1285 );
213 if (my_horse_pnm && my_horse_pnm->Ok()) dc.DrawBitmap( *my_horse_pnm, 30, 1300 );
214 }
215
216 void MyCanvas::CreateAntiAliasedBitmap()
217 {
218 wxBitmap bitmap( 300, 300 );
219
220 wxMemoryDC dc;
221
222 dc.SelectObject( bitmap );
223
224 dc.Clear();
225
226 dc.SetFont( wxFont( 24, wxDECORATIVE, wxNORMAL, wxNORMAL) );
227 dc.SetTextForeground( "RED" );
228 dc.DrawText( "This is anti-aliased Text.", 20, 20 );
229 dc.DrawText( "And a Rectangle.", 20, 60 );
230
231 dc.SetBrush( *wxRED_BRUSH );
232 dc.SetPen( *wxTRANSPARENT_PEN );
233 dc.DrawRoundedRectangle( 20, 100, 200, 180, 20 );
234
235 wxImage original( bitmap );
236 wxImage anti( 150, 150 );
237
238 /* This is quite slow, but safe. Use wxImage::GetData() for speed instead. */
239
240 for (int y = 1; y < 149; y++)
241 for (int x = 1; x < 149; x++)
242 {
243 int red = original.GetRed( x*2, y*2 ) +
244 original.GetRed( x*2-1, y*2 ) +
245 original.GetRed( x*2, y*2+1 ) +
246 original.GetRed( x*2+1, y*2+1 );
247 red = red/4;
248
249 int green = original.GetGreen( x*2, y*2 ) +
250 original.GetGreen( x*2-1, y*2 ) +
251 original.GetGreen( x*2, y*2+1 ) +
252 original.GetGreen( x*2+1, y*2+1 );
253 green = green/4;
254
255 int blue = original.GetBlue( x*2, y*2 ) +
256 original.GetBlue( x*2-1, y*2 ) +
257 original.GetBlue( x*2, y*2+1 ) +
258 original.GetBlue( x*2+1, y*2+1 );
259 blue = blue/4;
260 anti.SetRGB( x, y, red, green, blue );
261 }
262 my_anti = new wxBitmap( anti.ConvertToBitmap() );
263 }
264
265 // MyFrame
266
267 const int ID_QUIT = 108;
268 const int ID_ABOUT = 109;
269
270 IMPLEMENT_DYNAMIC_CLASS( MyFrame, wxFrame )
271
272 BEGIN_EVENT_TABLE(MyFrame,wxFrame)
273 EVT_MENU (ID_ABOUT, MyFrame::OnAbout)
274 EVT_MENU (ID_QUIT, MyFrame::OnQuit)
275 END_EVENT_TABLE()
276
277 MyFrame::MyFrame()
278 : wxFrame( (wxFrame *)NULL, -1, "wxImage sample",
279 wxPoint(20,20), wxSize(470,360) )
280 {
281 wxMenu *file_menu = new wxMenu();
282 file_menu->Append( ID_ABOUT, "&About..");
283 file_menu->Append( ID_QUIT, "E&xit");
284
285 wxMenuBar *menu_bar = new wxMenuBar();
286 menu_bar->Append(file_menu, "&File");
287
288 SetMenuBar( menu_bar );
289
290 CreateStatusBar(2);
291 int widths[] = { -1, 100 };
292 SetStatusWidths( 2, widths );
293
294 m_canvas = new MyCanvas( this, -1, wxPoint(0,0), wxSize(10,10) );
295
296 // 500 width * 1300 height
297 m_canvas->SetScrollbars( 10, 10, 50, 152 );
298 }
299
300 void MyFrame::OnQuit( wxCommandEvent &WXUNUSED(event) )
301 {
302 Close( TRUE );
303 }
304
305 void MyFrame::OnAbout( wxCommandEvent &WXUNUSED(event) )
306 {
307 (void)wxMessageBox( "wxImage demo\n"
308 "\n"
309 "Robert Roebling (c) 1998",
310 "About wxImage Demo", wxICON_INFORMATION | wxOK );
311 }
312
313 //-----------------------------------------------------------------------------
314 // MyApp
315 //-----------------------------------------------------------------------------
316
317 bool MyApp::OnInit()
318 {
319 #if wxUSE_LIBPNG
320 wxImage::AddHandler( new wxPNGHandler );
321 #endif
322
323 #if wxUSE_LIBJPEG
324 wxImage::AddHandler( new wxJPEGHandler );
325 #endif
326
327 #if wxUSE_GIF
328 wxImage::AddHandler( new wxGIFHandler );
329 #endif
330
331 #if wxUSE_PCX
332 wxImage::AddHandler( new wxPCXHandler );
333 #endif
334
335 #if wxUSE_PNM
336 wxImage::AddHandler( new wxPNMHandler );
337 #endif
338
339 wxFrame *frame = new MyFrame();
340 frame->Show( TRUE );
341
342 return TRUE;
343 }
344