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The rounded corners look really dumb at this size.
[wxWidgets.git] / demos / life / life.cpp
1 /////////////////////////////////////////////////////////////////////////////
2 // Name: life.cpp
3 // Purpose: The game of Life, created by J. H. Conway
4 // Author: Guillermo Rodriguez Garcia, <guille@iies.es>
5 // Modified by:
6 // Created: Jan/2000
7 // Copyright: (c) 2000, Guillermo Rodriguez Garcia
8 // Licence: wxWindows licence
9 /////////////////////////////////////////////////////////////////////////////
10
11 // ==========================================================================
12 // headers, declarations, constants
13 // ==========================================================================
14
15 // For compilers that support precompilation, includes "wx/wx.h".
16 #include "wx/wxprec.h"
17
18 #ifdef __BORLANDC__
19 #pragma hdrstop
20 #endif
21
22 #ifndef WX_PRECOMP
23 #include "wx/wx.h"
24 #endif
25
26 #include "wx/statline.h"
27 #include "wx/wfstream.h"
28 #include "wx/filedlg.h"
29 #include "wx/stockitem.h"
30
31 #include "life.h"
32 #include "game.h"
33 #include "dialogs.h"
34 #include "reader.h"
35
36 // --------------------------------------------------------------------------
37 // resources
38 // --------------------------------------------------------------------------
39
40 #ifndef wxHAS_IMAGES_IN_RESOURCES
41 // application icon
42 #include "mondrian.xpm"
43
44 // bitmap buttons for the toolbar
45 #include "bitmaps/reset.xpm"
46 #include "bitmaps/open.xpm"
47 #include "bitmaps/play.xpm"
48 #include "bitmaps/stop.xpm"
49 #include "bitmaps/zoomin.xpm"
50 #include "bitmaps/zoomout.xpm"
51 #include "bitmaps/info.xpm"
52
53 // navigator
54 #include "bitmaps/north.xpm"
55 #include "bitmaps/south.xpm"
56 #include "bitmaps/east.xpm"
57 #include "bitmaps/west.xpm"
58 #include "bitmaps/center.xpm"
59 #endif
60
61 // --------------------------------------------------------------------------
62 // constants
63 // --------------------------------------------------------------------------
64
65 // IDs for the controls and the menu commands. Exluding those already defined
66 // by wxWidgets, such as wxID_NEW.
67 enum
68 {
69 // timer
70 ID_TIMER = wxID_HIGHEST,
71
72 // file menu
73 ID_SAMPLES,
74
75 // view menu
76 ID_SHOWNAV,
77 ID_ORIGIN,
78 ID_CENTER,
79 ID_NORTH,
80 ID_SOUTH,
81 ID_EAST,
82 ID_WEST,
83 ID_INFO,
84
85 // game menu
86 ID_START,
87 ID_STEP,
88 ID_TOPSPEED,
89
90 // speed selection slider
91 ID_SLIDER
92 };
93
94 // --------------------------------------------------------------------------
95 // event tables and other macros for wxWidgets
96 // --------------------------------------------------------------------------
97
98 // Event tables
99 BEGIN_EVENT_TABLE(LifeFrame, wxFrame)
100 EVT_MENU (wxID_NEW, LifeFrame::OnMenu)
101 #if wxUSE_FILEDLG
102 EVT_MENU (wxID_OPEN, LifeFrame::OnOpen)
103 #endif
104 EVT_MENU (ID_SAMPLES, LifeFrame::OnSamples)
105 EVT_MENU (wxID_ABOUT, LifeFrame::OnMenu)
106 EVT_MENU (wxID_EXIT, LifeFrame::OnMenu)
107 EVT_MENU (ID_SHOWNAV, LifeFrame::OnMenu)
108 EVT_MENU (ID_ORIGIN, LifeFrame::OnNavigate)
109 EVT_BUTTON (ID_CENTER, LifeFrame::OnNavigate)
110 EVT_BUTTON (ID_NORTH, LifeFrame::OnNavigate)
111 EVT_BUTTON (ID_SOUTH, LifeFrame::OnNavigate)
112 EVT_BUTTON (ID_EAST, LifeFrame::OnNavigate)
113 EVT_BUTTON (ID_WEST, LifeFrame::OnNavigate)
114 EVT_MENU (wxID_ZOOM_IN, LifeFrame::OnZoom)
115 EVT_MENU (wxID_ZOOM_OUT,LifeFrame::OnZoom)
116 EVT_MENU (ID_INFO, LifeFrame::OnMenu)
117 EVT_MENU (ID_START, LifeFrame::OnMenu)
118 EVT_MENU (ID_STEP, LifeFrame::OnMenu)
119 EVT_MENU (wxID_STOP, LifeFrame::OnMenu)
120 EVT_MENU (ID_TOPSPEED, LifeFrame::OnMenu)
121 EVT_COMMAND_SCROLL (ID_SLIDER, LifeFrame::OnSlider)
122 EVT_TIMER (ID_TIMER, LifeFrame::OnTimer)
123 EVT_CLOSE ( LifeFrame::OnClose)
124 END_EVENT_TABLE()
125
126 BEGIN_EVENT_TABLE(LifeNavigator, wxMiniFrame)
127 EVT_CLOSE ( LifeNavigator::OnClose)
128 END_EVENT_TABLE()
129
130 BEGIN_EVENT_TABLE(LifeCanvas, wxWindow)
131 EVT_PAINT ( LifeCanvas::OnPaint)
132 EVT_SCROLLWIN ( LifeCanvas::OnScroll)
133 EVT_SIZE ( LifeCanvas::OnSize)
134 EVT_MOTION ( LifeCanvas::OnMouse)
135 EVT_LEFT_DOWN ( LifeCanvas::OnMouse)
136 EVT_LEFT_UP ( LifeCanvas::OnMouse)
137 EVT_LEFT_DCLICK ( LifeCanvas::OnMouse)
138 EVT_ERASE_BACKGROUND( LifeCanvas::OnEraseBackground)
139 END_EVENT_TABLE()
140
141
142 // Create a new application object
143 IMPLEMENT_APP(LifeApp)
144
145
146 // ==========================================================================
147 // implementation
148 // ==========================================================================
149
150 // some shortcuts
151 #define ADD_TOOL(id, bmp, tooltip, help) \
152 toolBar->AddTool(id, wxEmptyString, bmp, wxNullBitmap, wxITEM_NORMAL, tooltip, help)
153
154
155 // --------------------------------------------------------------------------
156 // LifeApp
157 // --------------------------------------------------------------------------
158
159 // 'Main program' equivalent: the program execution "starts" here
160 bool LifeApp::OnInit()
161 {
162 // create the main application window
163 LifeFrame *frame = new LifeFrame();
164
165 // show it
166 frame->Show(true);
167
168 // just for Motif
169 #ifdef __WXMOTIF__
170 frame->UpdateInfoText();
171 #endif
172
173 // enter the main message loop and run the app
174 return true;
175 }
176
177 // --------------------------------------------------------------------------
178 // LifeFrame
179 // --------------------------------------------------------------------------
180
181 // frame constructor
182 LifeFrame::LifeFrame() :
183 wxFrame( (wxFrame *) NULL, wxID_ANY, _("Life!"), wxDefaultPosition ),
184 m_navigator(NULL)
185 {
186 // frame icon
187 SetIcon(wxICON(mondrian));
188
189 // menu bar
190 wxMenu *menuFile = new wxMenu(wxMENU_TEAROFF);
191 wxMenu *menuView = new wxMenu(wxMENU_TEAROFF);
192 wxMenu *menuGame = new wxMenu(wxMENU_TEAROFF);
193 wxMenu *menuHelp = new wxMenu(wxMENU_TEAROFF);
194
195 menuFile->Append(wxID_NEW, wxEmptyString, _("Start a new game"));
196 #if wxUSE_FILEDLG
197 menuFile->Append(wxID_OPEN, wxEmptyString, _("Open an existing Life pattern"));
198 #endif
199 menuFile->Append(ID_SAMPLES, _("&Sample game..."), _("Select a sample configuration"));
200 #if ! (defined(__SMARTPHONE__) || defined(__POCKETPC__))
201 menuFile->AppendSeparator();
202 menuFile->Append(wxID_EXIT);
203
204 menuView->Append(ID_SHOWNAV, _("Navigation &toolbox"), _("Show or hide toolbox"), wxITEM_CHECK);
205 menuView->Check(ID_SHOWNAV, true);
206 menuView->AppendSeparator();
207 #endif
208
209 menuView->Append(ID_ORIGIN, _("&Absolute origin"), _("Go to (0, 0)"));
210 menuView->Append(ID_CENTER, _("&Center of mass"), _("Find center of mass"));
211 menuView->Append(ID_NORTH, _("&North"), _("Find northernmost cell"));
212 menuView->Append(ID_SOUTH, _("&South"), _("Find southernmost cell"));
213 menuView->Append(ID_EAST, _("&East"), _("Find easternmost cell"));
214 menuView->Append(ID_WEST, _("&West"), _("Find westernmost cell"));
215 menuView->AppendSeparator();
216 menuView->Append(wxID_ZOOM_IN, wxEmptyString, _("Zoom in"));
217 menuView->Append(wxID_ZOOM_OUT, wxEmptyString, _("Zoom out"));
218 menuView->Append(ID_INFO, _("&Description\tCtrl-D"), _("View pattern description"));
219
220 menuGame->Append(ID_START, _("&Start\tCtrl-S"), _("Start"));
221 menuGame->Append(ID_STEP, _("&Next\tCtrl-N"), _("Single step"));
222 menuGame->Append(wxID_STOP, wxEmptyString, _("Stop"));
223 menuGame->Enable(wxID_STOP, false);
224 menuGame->AppendSeparator();
225 menuGame->Append(ID_TOPSPEED, _("T&op speed!"), _("Go as fast as possible"));
226
227 menuHelp->Append(wxID_ABOUT, _("&About\tCtrl-A"), _("Show about dialog"));
228
229 wxMenuBar *menuBar = new wxMenuBar();
230 menuBar->Append(menuFile, _("&File"));
231 menuBar->Append(menuView, _("&View"));
232 menuBar->Append(menuGame, _("&Game"));
233 menuBar->Append(menuHelp, _("&Help"));
234 SetMenuBar(menuBar);
235
236 // tool bar
237 wxBitmap tbBitmaps[7];
238
239 tbBitmaps[0] = wxBITMAP(reset);
240 tbBitmaps[1] = wxBITMAP(open);
241 tbBitmaps[2] = wxBITMAP(zoomin);
242 tbBitmaps[3] = wxBITMAP(zoomout);
243 tbBitmaps[4] = wxBITMAP(info);
244 tbBitmaps[5] = wxBITMAP(play);
245 tbBitmaps[6] = wxBITMAP(stop);
246
247 wxToolBar *toolBar = CreateToolBar();
248 toolBar->SetMargins(5, 5);
249 toolBar->SetToolBitmapSize(wxSize(16, 16));
250
251 ADD_TOOL(wxID_NEW, tbBitmaps[0], wxGetStockLabel(wxID_NEW, wxSTOCK_NOFLAGS), _("Start a new game"));
252 #ifndef __POCKETPC__
253 #if wxUSE_FILEDLG
254 ADD_TOOL(wxID_OPEN, tbBitmaps[1], wxGetStockLabel(wxID_OPEN, wxSTOCK_NOFLAGS), _("Open an existing Life pattern"));
255 #endif // wxUSE_FILEDLG
256
257 toolBar->AddSeparator();
258 ADD_TOOL(wxID_ZOOM_IN, tbBitmaps[2], wxGetStockLabel(wxID_ZOOM_IN, wxSTOCK_NOFLAGS), _("Zoom in"));
259 ADD_TOOL(wxID_ZOOM_OUT, tbBitmaps[3], wxGetStockLabel(wxID_ZOOM_OUT, wxSTOCK_NOFLAGS), _("Zoom out"));
260 ADD_TOOL(ID_INFO, tbBitmaps[4], _("Description"), _("Show description"));
261 toolBar->AddSeparator();
262 #endif // __POCKETPC__
263 ADD_TOOL(ID_START, tbBitmaps[5], _("Start"), _("Start"));
264 ADD_TOOL(wxID_STOP, tbBitmaps[6], _("Stop"), _("Stop"));
265
266 toolBar->Realize();
267 toolBar->EnableTool(wxID_STOP, false); // must be after Realize() !
268
269 #if wxUSE_STATUSBAR
270 // status bar
271 CreateStatusBar(2);
272 SetStatusText(_("Welcome to Life!"));
273 #endif // wxUSE_STATUSBAR
274
275 // game and timer
276 m_life = new Life();
277 m_timer = new wxTimer(this, ID_TIMER);
278 m_running = false;
279 m_topspeed = false;
280 m_interval = 500;
281 m_tics = 0;
282
283 // We use two different panels to reduce flicker in wxGTK, because
284 // some widgets (like wxStaticText) don't have their own X11 window,
285 // and thus updating the text would result in a refresh of the canvas
286 // if they belong to the same parent.
287
288 wxPanel *panel1 = new wxPanel(this, wxID_ANY);
289 wxPanel *panel2 = new wxPanel(this, wxID_ANY);
290
291 // canvas
292 m_canvas = new LifeCanvas(panel1, m_life);
293
294 // info panel
295 m_text = new wxStaticText(panel2, wxID_ANY,
296 wxEmptyString,
297 wxDefaultPosition,
298 wxDefaultSize,
299 wxALIGN_CENTER | wxST_NO_AUTORESIZE);
300
301 wxSlider *slider = new wxSlider(panel2, ID_SLIDER,
302 5, 1, 10,
303 wxDefaultPosition,
304 wxSize(200, wxDefaultCoord),
305 wxSL_HORIZONTAL | wxSL_AUTOTICKS);
306
307 UpdateInfoText();
308
309 // component layout
310 wxBoxSizer *sizer1 = new wxBoxSizer(wxVERTICAL);
311 wxBoxSizer *sizer2 = new wxBoxSizer(wxVERTICAL);
312 wxBoxSizer *sizer3 = new wxBoxSizer(wxVERTICAL);
313
314 #if wxUSE_STATLINE
315 sizer1->Add( new wxStaticLine(panel1, wxID_ANY), 0, wxGROW );
316 #endif // wxUSE_STATLINE
317 sizer1->Add( m_canvas, 1, wxGROW | wxALL, 2 );
318 #if wxUSE_STATLINE
319 sizer1->Add( new wxStaticLine(panel1, wxID_ANY), 0, wxGROW );
320 #endif // wxUSE_STATLINE
321 panel1->SetSizer( sizer1 );
322 sizer1->Fit( panel1 );
323
324 sizer2->Add( m_text, 0, wxGROW | wxTOP, 4 );
325 sizer2->Add( slider, 0, wxCENTRE | wxALL, 4 );
326
327 panel2->SetSizer( sizer2 );
328 sizer2->Fit( panel2 );
329
330 sizer3->Add( panel1, 1, wxGROW );
331 sizer3->Add( panel2, 0, wxGROW );
332 SetSizer( sizer3 );
333
334 #ifndef __WXWINCE__
335 sizer3->Fit( this );
336
337 // set minimum frame size
338 sizer3->SetSizeHints( this );
339
340 // navigator frame - not appropriate for small devices
341 m_navigator = new LifeNavigator(this);
342 #endif
343
344 }
345
346 LifeFrame::~LifeFrame()
347 {
348 delete m_timer;
349 }
350
351 void LifeFrame::UpdateInfoText()
352 {
353 wxString msg;
354
355 msg.Printf(_(" Generation: %lu (T: %lu ms), Population: %lu "),
356 m_tics,
357 m_topspeed? 0 : m_interval,
358 static_cast<unsigned long>(m_life->GetNumCells()));
359 m_text->SetLabel(msg);
360 }
361
362 // Enable or disable tools and menu entries according to the current
363 // state. See also wxEVT_UPDATE_UI events for a slightly different
364 // way to do this.
365 void LifeFrame::UpdateUI()
366 {
367 // start / stop
368 GetToolBar()->EnableTool(ID_START, !m_running);
369 GetToolBar()->EnableTool(wxID_STOP, m_running);
370 GetMenuBar()->Enable(ID_START, !m_running);
371 GetMenuBar()->Enable(ID_STEP, !m_running);
372 GetMenuBar()->Enable(wxID_STOP, m_running);
373 GetMenuBar()->Enable(ID_TOPSPEED, !m_topspeed);
374
375 // zooming
376 int cellsize = m_canvas->GetCellSize();
377 GetToolBar()->EnableTool(wxID_ZOOM_IN, cellsize < 32);
378 GetToolBar()->EnableTool(wxID_ZOOM_OUT, cellsize > 1);
379 GetMenuBar()->Enable(wxID_ZOOM_IN, cellsize < 32);
380 GetMenuBar()->Enable(wxID_ZOOM_OUT, cellsize > 1);
381 }
382
383 // Event handlers -----------------------------------------------------------
384
385 // OnMenu handles all events which don't have their own event handler
386 void LifeFrame::OnMenu(wxCommandEvent& event)
387 {
388 switch (event.GetId())
389 {
390 case wxID_NEW:
391 {
392 // stop if it was running
393 OnStop();
394 m_life->Clear();
395 m_canvas->Recenter(0, 0);
396 m_tics = 0;
397 UpdateInfoText();
398 break;
399 }
400 case wxID_ABOUT:
401 {
402 LifeAboutDialog dialog(this);
403 dialog.ShowModal();
404 break;
405 }
406 case wxID_EXIT:
407 {
408 // true is to force the frame to close
409 Close(true);
410 break;
411 }
412 case ID_SHOWNAV:
413 {
414 bool checked = GetMenuBar()->GetMenu(1)->IsChecked(ID_SHOWNAV);
415 if (m_navigator)
416 m_navigator->Show(checked);
417 break;
418 }
419 case ID_INFO:
420 {
421 wxString desc = m_life->GetDescription();
422
423 if ( desc.empty() )
424 desc = _("Not available");
425
426 // should we make the description editable here?
427 wxMessageBox(desc, _("Description"), wxOK | wxICON_INFORMATION);
428
429 break;
430 }
431 case ID_START : OnStart(); break;
432 case ID_STEP : OnStep(); break;
433 case wxID_STOP : OnStop(); break;
434 case ID_TOPSPEED:
435 {
436 m_running = true;
437 m_topspeed = true;
438 UpdateUI();
439 while (m_running && m_topspeed)
440 {
441 OnStep();
442 wxYield();
443 }
444 break;
445 }
446 }
447 }
448
449 #if wxUSE_FILEDLG
450 void LifeFrame::OnOpen(wxCommandEvent& WXUNUSED(event))
451 {
452 wxFileDialog filedlg(this,
453 _("Choose a file to open"),
454 wxEmptyString,
455 wxEmptyString,
456 _("Life patterns (*.lif)|*.lif|All files (*.*)|*.*"),
457 wxFD_OPEN | wxFD_FILE_MUST_EXIST);
458
459 if (filedlg.ShowModal() == wxID_OK)
460 {
461 wxFileInputStream stream(filedlg.GetPath());
462 LifeReader reader(stream);
463
464 // the reader handles errors itself, no need to do anything here
465 if (reader.IsOk())
466 {
467 // stop if running and put the pattern
468 OnStop();
469 m_life->Clear();
470 m_life->SetPattern(reader.GetPattern());
471
472 // recenter canvas
473 m_canvas->Recenter(0, 0);
474 m_tics = 0;
475 UpdateInfoText();
476 }
477 }
478 }
479 #endif
480
481 void LifeFrame::OnSamples(wxCommandEvent& WXUNUSED(event))
482 {
483 // stop if it was running
484 OnStop();
485
486 // dialog box
487 LifeSamplesDialog dialog(this);
488
489 if (dialog.ShowModal() == wxID_OK)
490 {
491 const LifePattern pattern = dialog.GetPattern();
492
493 // put the pattern
494 m_life->Clear();
495 m_life->SetPattern(pattern);
496
497 // recenter canvas
498 m_canvas->Recenter(0, 0);
499 m_tics = 0;
500 UpdateInfoText();
501 }
502 }
503
504 void LifeFrame::OnZoom(wxCommandEvent& event)
505 {
506 int cellsize = m_canvas->GetCellSize();
507
508 if ((event.GetId() == wxID_ZOOM_IN) && cellsize < 32)
509 {
510 m_canvas->SetCellSize(cellsize * 2);
511 UpdateUI();
512 }
513 else if ((event.GetId() == wxID_ZOOM_OUT) && cellsize > 1)
514 {
515 m_canvas->SetCellSize(cellsize / 2);
516 UpdateUI();
517 }
518 }
519
520 void LifeFrame::OnNavigate(wxCommandEvent& event)
521 {
522 LifeCell c;
523
524 switch (event.GetId())
525 {
526 case ID_NORTH: c = m_life->FindNorth(); break;
527 case ID_SOUTH: c = m_life->FindSouth(); break;
528 case ID_WEST: c = m_life->FindWest(); break;
529 case ID_EAST: c = m_life->FindEast(); break;
530 case ID_CENTER: c = m_life->FindCenter(); break;
531 default :
532 wxFAIL;
533 // Fall through!
534 case ID_ORIGIN: c.i = c.j = 0; break;
535 }
536
537 m_canvas->Recenter(c.i, c.j);
538 }
539
540 void LifeFrame::OnSlider(wxScrollEvent& event)
541 {
542 m_interval = event.GetPosition() * 100;
543
544 if (m_running)
545 {
546 OnStop();
547 OnStart();
548 }
549
550 UpdateInfoText();
551 }
552
553 void LifeFrame::OnTimer(wxTimerEvent& WXUNUSED(event))
554 {
555 OnStep();
556 }
557
558 void LifeFrame::OnClose(wxCloseEvent& WXUNUSED(event))
559 {
560 // Stop if it was running; this is absolutely needed because
561 // the frame won't be actually destroyed until there are no
562 // more pending events, and this in turn won't ever happen
563 // if the timer is running faster than the window can redraw.
564 OnStop();
565 Destroy();
566 }
567
568 void LifeFrame::OnStart()
569 {
570 if (!m_running)
571 {
572 m_timer->Start(m_interval);
573 m_running = true;
574 UpdateUI();
575 }
576 }
577
578 void LifeFrame::OnStop()
579 {
580 if (m_running)
581 {
582 m_timer->Stop();
583 m_running = false;
584 m_topspeed = false;
585 UpdateUI();
586 }
587 }
588
589 void LifeFrame::OnStep()
590 {
591 if (m_life->NextTic())
592 m_tics++;
593 else
594 OnStop();
595
596 m_canvas->DrawChanged();
597 UpdateInfoText();
598 }
599
600
601 // --------------------------------------------------------------------------
602 // LifeNavigator miniframe
603 // --------------------------------------------------------------------------
604
605 LifeNavigator::LifeNavigator(wxWindow *parent)
606 : wxMiniFrame(parent, wxID_ANY,
607 _("Navigation"),
608 wxDefaultPosition,
609 wxDefaultSize,
610 wxCAPTION | wxSIMPLE_BORDER)
611 {
612 wxPanel *panel = new wxPanel(this, wxID_ANY);
613 wxBoxSizer *sizer1 = new wxBoxSizer(wxVERTICAL);
614 wxBoxSizer *sizer2 = new wxBoxSizer(wxHORIZONTAL);
615
616 // create bitmaps and masks for the buttons
617 wxBitmap
618 bmpn = wxBITMAP(north),
619 bmpw = wxBITMAP(west),
620 bmpc = wxBITMAP(center),
621 bmpe = wxBITMAP(east),
622 bmps = wxBITMAP(south);
623
624 #if !defined(__WXGTK__) && !defined(__WXMOTIF__) && !defined(__WXMAC__)
625 bmpn.SetMask(new wxMask(bmpn, *wxLIGHT_GREY));
626 bmpw.SetMask(new wxMask(bmpw, *wxLIGHT_GREY));
627 bmpc.SetMask(new wxMask(bmpc, *wxLIGHT_GREY));
628 bmpe.SetMask(new wxMask(bmpe, *wxLIGHT_GREY));
629 bmps.SetMask(new wxMask(bmps, *wxLIGHT_GREY));
630 #endif
631
632 // create the buttons and attach tooltips to them
633 wxBitmapButton
634 *bn = new wxBitmapButton(panel, ID_NORTH, bmpn),
635 *bw = new wxBitmapButton(panel, ID_WEST , bmpw),
636 *bc = new wxBitmapButton(panel, ID_CENTER, bmpc),
637 *be = new wxBitmapButton(panel, ID_EAST , bmpe),
638 *bs = new wxBitmapButton(panel, ID_SOUTH, bmps);
639
640 #if wxUSE_TOOLTIPS
641 bn->SetToolTip(_("Find northernmost cell"));
642 bw->SetToolTip(_("Find westernmost cell"));
643 bc->SetToolTip(_("Find center of mass"));
644 be->SetToolTip(_("Find easternmost cell"));
645 bs->SetToolTip(_("Find southernmost cell"));
646 #endif
647
648 // add buttons to sizers
649 sizer2->Add( bw, 0, wxCENTRE | wxWEST, 4 );
650 sizer2->Add( bc, 0, wxCENTRE);
651 sizer2->Add( be, 0, wxCENTRE | wxEAST, 4 );
652 sizer1->Add( bn, 0, wxCENTRE | wxNORTH, 4 );
653 sizer1->Add( sizer2 );
654 sizer1->Add( bs, 0, wxCENTRE | wxSOUTH, 4 );
655
656 // set the panel and miniframe size
657 panel->SetSizer(sizer1);
658
659 sizer1->Fit(panel);
660 SetClientSize(panel->GetSize());
661 wxSize sz = GetSize();
662 SetSizeHints(sz.x, sz.y, sz.x, sz.y);
663
664 // move it to a sensible position
665 wxRect parentRect = parent->GetRect();
666 wxSize childSize = GetSize();
667 int x = parentRect.GetX() +
668 parentRect.GetWidth();
669 int y = parentRect.GetY() +
670 (parentRect.GetHeight() - childSize.GetHeight()) / 4;
671 Move(x, y);
672
673 // done
674 Show(true);
675 }
676
677 void LifeNavigator::OnClose(wxCloseEvent& event)
678 {
679 // avoid if we can
680 if (event.CanVeto())
681 event.Veto();
682 else
683 Destroy();
684 }
685
686
687 // --------------------------------------------------------------------------
688 // LifeCanvas
689 // --------------------------------------------------------------------------
690
691 // canvas constructor
692 LifeCanvas::LifeCanvas(wxWindow *parent, Life *life, bool interactive)
693 : wxWindow(parent, wxID_ANY, wxDefaultPosition, wxSize(100, 100),
694 wxFULL_REPAINT_ON_RESIZE | wxHSCROLL | wxVSCROLL
695 #if !defined(__SMARTPHONE__) && !defined(__POCKETPC__)
696 |wxSUNKEN_BORDER
697 #else
698 |wxSIMPLE_BORDER
699 #endif
700 )
701 {
702 m_life = life;
703 m_interactive = interactive;
704 m_cellsize = 8;
705 m_status = MOUSE_NOACTION;
706 m_viewportX = 0;
707 m_viewportY = 0;
708 m_viewportH = 0;
709 m_viewportW = 0;
710
711 if (m_interactive)
712 SetCursor(*wxCROSS_CURSOR);
713
714 // reduce flicker if wxEVT_ERASE_BACKGROUND is not available
715 SetBackgroundColour(*wxWHITE);
716 }
717
718 LifeCanvas::~LifeCanvas()
719 {
720 delete m_life;
721 }
722
723 // recenter at the given position
724 void LifeCanvas::Recenter(wxInt32 i, wxInt32 j)
725 {
726 m_viewportX = i - m_viewportW / 2;
727 m_viewportY = j - m_viewportH / 2;
728
729 // redraw everything
730 Refresh(false);
731 }
732
733 // set the cell size and refresh display
734 void LifeCanvas::SetCellSize(int cellsize)
735 {
736 m_cellsize = cellsize;
737
738 // find current center
739 wxInt32 cx = m_viewportX + m_viewportW / 2;
740 wxInt32 cy = m_viewportY + m_viewportH / 2;
741
742 // get current canvas size and adjust viewport accordingly
743 int w, h;
744 GetClientSize(&w, &h);
745 m_viewportW = (w + m_cellsize - 1) / m_cellsize;
746 m_viewportH = (h + m_cellsize - 1) / m_cellsize;
747
748 // recenter
749 m_viewportX = cx - m_viewportW / 2;
750 m_viewportY = cy - m_viewportH / 2;
751
752 // adjust scrollbars
753 if (m_interactive)
754 {
755 SetScrollbar(wxHORIZONTAL, m_viewportW, m_viewportW, 3 * m_viewportW);
756 SetScrollbar(wxVERTICAL, m_viewportH, m_viewportH, 3 * m_viewportH);
757 m_thumbX = m_viewportW;
758 m_thumbY = m_viewportH;
759 }
760
761 Refresh(false);
762 }
763
764 // draw a cell
765 void LifeCanvas::DrawCell(wxInt32 i, wxInt32 j, bool alive)
766 {
767 wxClientDC dc(this);
768
769 dc.SetPen(alive? *wxBLACK_PEN : *wxWHITE_PEN);
770 dc.SetBrush(alive? *wxBLACK_BRUSH : *wxWHITE_BRUSH);
771
772 DrawCell(i, j, dc);
773 }
774
775 void LifeCanvas::DrawCell(wxInt32 i, wxInt32 j, wxDC &dc)
776 {
777 wxCoord x = CellToX(i);
778 wxCoord y = CellToY(j);
779
780 // if cellsize is 1 or 2, there will be no grid
781 switch (m_cellsize)
782 {
783 case 1:
784 dc.DrawPoint(x, y);
785 break;
786 case 2:
787 dc.DrawRectangle(x, y, 2, 2);
788 break;
789 default:
790 dc.DrawRectangle(x + 1, y + 1, m_cellsize - 1, m_cellsize - 1);
791 }
792 }
793
794 // draw all changed cells
795 void LifeCanvas::DrawChanged()
796 {
797 wxClientDC dc(this);
798
799 size_t ncells;
800 LifeCell *cells;
801 bool done = false;
802
803 m_life->BeginFind(m_viewportX,
804 m_viewportY,
805 m_viewportX + m_viewportW,
806 m_viewportY + m_viewportH,
807 true);
808
809 if (m_cellsize == 1)
810 {
811 dc.SetPen(*wxBLACK_PEN);
812 }
813 else
814 {
815 dc.SetPen(*wxTRANSPARENT_PEN);
816 dc.SetBrush(*wxBLACK_BRUSH);
817 }
818 dc.SetLogicalFunction(wxINVERT);
819
820 while (!done)
821 {
822 done = m_life->FindMore(&cells, &ncells);
823
824 for (size_t m = 0; m < ncells; m++)
825 DrawCell(cells[m].i, cells[m].j, dc);
826 }
827 }
828
829 // event handlers
830 void LifeCanvas::OnPaint(wxPaintEvent& WXUNUSED(event))
831 {
832 wxPaintDC dc(this);
833 wxRect rect = GetUpdateRegion().GetBox();
834 wxCoord x, y, w, h;
835 wxInt32 i0, j0, i1, j1;
836
837 // find damaged area
838 x = rect.GetX();
839 y = rect.GetY();
840 w = rect.GetWidth();
841 h = rect.GetHeight();
842
843 i0 = XToCell(x);
844 j0 = YToCell(y);
845 i1 = XToCell(x + w - 1);
846 j1 = YToCell(y + h - 1);
847
848 size_t ncells;
849 LifeCell *cells;
850
851 m_life->BeginFind(i0, j0, i1, j1, false);
852 bool done = m_life->FindMore(&cells, &ncells);
853
854 // erase all damaged cells and draw the grid
855 dc.SetBrush(*wxWHITE_BRUSH);
856
857 if (m_cellsize <= 2)
858 {
859 // no grid
860 dc.SetPen(*wxWHITE_PEN);
861 dc.DrawRectangle(x, y, w, h);
862 }
863 else
864 {
865 x = CellToX(i0);
866 y = CellToY(j0);
867 w = CellToX(i1 + 1) - x + 1;
868 h = CellToY(j1 + 1) - y + 1;
869
870 dc.SetPen(*wxLIGHT_GREY_PEN);
871 for (wxInt32 yy = y; yy <= (y + h - m_cellsize); yy += m_cellsize)
872 dc.DrawRectangle(x, yy, w, m_cellsize + 1);
873 for (wxInt32 xx = x; xx <= (x + w - m_cellsize); xx += m_cellsize)
874 dc.DrawLine(xx, y, xx, y + h);
875 }
876
877 // draw all alive cells
878 dc.SetPen(*wxBLACK_PEN);
879 dc.SetBrush(*wxBLACK_BRUSH);
880
881 while (!done)
882 {
883 for (size_t m = 0; m < ncells; m++)
884 DrawCell(cells[m].i, cells[m].j, dc);
885
886 done = m_life->FindMore(&cells, &ncells);
887 }
888
889 // last set
890 for (size_t m = 0; m < ncells; m++)
891 DrawCell(cells[m].i, cells[m].j, dc);
892 }
893
894 void LifeCanvas::OnMouse(wxMouseEvent& event)
895 {
896 if (!m_interactive)
897 return;
898
899 // which cell are we pointing at?
900 wxInt32 i = XToCell( event.GetX() );
901 wxInt32 j = YToCell( event.GetY() );
902
903 #if wxUSE_STATUSBAR
904 // set statusbar text
905 wxString msg;
906 msg.Printf(_("Cell: (%d, %d)"), i, j);
907 ((LifeFrame *) wxGetApp().GetTopWindow())->SetStatusText(msg, 1);
908 #endif // wxUSE_STATUSBAR
909
910 // NOTE that wxMouseEvent::LeftDown() and wxMouseEvent::LeftIsDown()
911 // have different semantics. The first one is used to signal that the
912 // button was just pressed (i.e., in "button down" events); the second
913 // one just describes the current status of the button, independently
914 // of the mouse event type. LeftIsDown is typically used in "mouse
915 // move" events, to test if the button is _still_ pressed.
916
917 // is the button down?
918 if (!event.LeftIsDown())
919 {
920 m_status = MOUSE_NOACTION;
921 return;
922 }
923
924 // was it pressed just now?
925 if (event.LeftDown())
926 {
927 // yes: start a new action and toggle this cell
928 m_status = (m_life->IsAlive(i, j)? MOUSE_ERASING : MOUSE_DRAWING);
929
930 m_mi = i;
931 m_mj = j;
932 m_life->SetCell(i, j, m_status == MOUSE_DRAWING);
933 DrawCell(i, j, m_status == MOUSE_DRAWING);
934 }
935 else if ((m_mi != i) || (m_mj != j))
936 {
937 // no: continue ongoing action
938 bool alive = (m_status == MOUSE_DRAWING);
939
940 // prepare DC and pen + brush to optimize drawing
941 wxClientDC dc(this);
942 dc.SetPen(alive? *wxBLACK_PEN : *wxWHITE_PEN);
943 dc.SetBrush(alive? *wxBLACK_BRUSH : *wxWHITE_BRUSH);
944
945 // draw a line of cells using Bresenham's algorithm
946 wxInt32 d, ii, jj, di, ai, si, dj, aj, sj;
947 di = i - m_mi;
948 ai = abs(di) << 1;
949 si = (di < 0)? -1 : 1;
950 dj = j - m_mj;
951 aj = abs(dj) << 1;
952 sj = (dj < 0)? -1 : 1;
953
954 ii = m_mi;
955 jj = m_mj;
956
957 if (ai > aj)
958 {
959 // iterate over i
960 d = aj - (ai >> 1);
961
962 while (ii != i)
963 {
964 m_life->SetCell(ii, jj, alive);
965 DrawCell(ii, jj, dc);
966 if (d >= 0)
967 {
968 jj += sj;
969 d -= ai;
970 }
971 ii += si;
972 d += aj;
973 }
974 }
975 else
976 {
977 // iterate over j
978 d = ai - (aj >> 1);
979
980 while (jj != j)
981 {
982 m_life->SetCell(ii, jj, alive);
983 DrawCell(ii, jj, dc);
984 if (d >= 0)
985 {
986 ii += si;
987 d -= aj;
988 }
989 jj += sj;
990 d += ai;
991 }
992 }
993
994 // last cell
995 m_life->SetCell(ii, jj, alive);
996 DrawCell(ii, jj, dc);
997 m_mi = ii;
998 m_mj = jj;
999 }
1000
1001 ((LifeFrame *) wxGetApp().GetTopWindow())->UpdateInfoText();
1002 }
1003
1004 void LifeCanvas::OnSize(wxSizeEvent& event)
1005 {
1006 // find center
1007 wxInt32 cx = m_viewportX + m_viewportW / 2;
1008 wxInt32 cy = m_viewportY + m_viewportH / 2;
1009
1010 // get new size
1011 wxCoord w = event.GetSize().GetX();
1012 wxCoord h = event.GetSize().GetY();
1013 m_viewportW = (w + m_cellsize - 1) / m_cellsize;
1014 m_viewportH = (h + m_cellsize - 1) / m_cellsize;
1015
1016 // recenter
1017 m_viewportX = cx - m_viewportW / 2;
1018 m_viewportY = cy - m_viewportH / 2;
1019
1020 // scrollbars
1021 if (m_interactive)
1022 {
1023 SetScrollbar(wxHORIZONTAL, m_viewportW, m_viewportW, 3 * m_viewportW);
1024 SetScrollbar(wxVERTICAL, m_viewportH, m_viewportH, 3 * m_viewportH);
1025 m_thumbX = m_viewportW;
1026 m_thumbY = m_viewportH;
1027 }
1028
1029 // allow default processing
1030 event.Skip();
1031 }
1032
1033 void LifeCanvas::OnScroll(wxScrollWinEvent& event)
1034 {
1035 WXTYPE type = (WXTYPE)event.GetEventType();
1036 int pos = event.GetPosition();
1037 int orient = event.GetOrientation();
1038
1039 // calculate scroll increment
1040 int scrollinc = 0;
1041 if (type == wxEVT_SCROLLWIN_TOP)
1042 {
1043 if (orient == wxHORIZONTAL)
1044 scrollinc = -m_viewportW;
1045 else
1046 scrollinc = -m_viewportH;
1047 }
1048 else
1049 if (type == wxEVT_SCROLLWIN_BOTTOM)
1050 {
1051 if (orient == wxHORIZONTAL)
1052 scrollinc = m_viewportW;
1053 else
1054 scrollinc = m_viewportH;
1055 }
1056 else
1057 if (type == wxEVT_SCROLLWIN_LINEUP)
1058 {
1059 scrollinc = -1;
1060 }
1061 else
1062 if (type == wxEVT_SCROLLWIN_LINEDOWN)
1063 {
1064 scrollinc = +1;
1065 }
1066 else
1067 if (type == wxEVT_SCROLLWIN_PAGEUP)
1068 {
1069 scrollinc = -10;
1070 }
1071 else
1072 if (type == wxEVT_SCROLLWIN_PAGEDOWN)
1073 {
1074 scrollinc = +10;
1075 }
1076 else
1077 if (type == wxEVT_SCROLLWIN_THUMBTRACK)
1078 {
1079 if (orient == wxHORIZONTAL)
1080 {
1081 scrollinc = pos - m_thumbX;
1082 m_thumbX = pos;
1083 }
1084 else
1085 {
1086 scrollinc = pos - m_thumbY;
1087 m_thumbY = pos;
1088 }
1089 }
1090 else
1091 if (type == wxEVT_SCROLLWIN_THUMBRELEASE)
1092 {
1093 m_thumbX = m_viewportW;
1094 m_thumbY = m_viewportH;
1095 }
1096
1097 #if defined(__WXGTK__) || defined(__WXMOTIF__)
1098 // wxGTK and wxMotif update the thumb automatically (wxMSW doesn't);
1099 // so reset it back as we always want it to be in the same position.
1100 if (type != wxEVT_SCROLLWIN_THUMBTRACK)
1101 {
1102 SetScrollbar(wxHORIZONTAL, m_viewportW, m_viewportW, 3 * m_viewportW);
1103 SetScrollbar(wxVERTICAL, m_viewportH, m_viewportH, 3 * m_viewportH);
1104 }
1105 #endif
1106
1107 if (scrollinc == 0) return;
1108
1109 // scroll the window and adjust the viewport
1110 if (orient == wxHORIZONTAL)
1111 {
1112 m_viewportX += scrollinc;
1113 ScrollWindow( -m_cellsize * scrollinc, 0, (const wxRect *) NULL);
1114 }
1115 else
1116 {
1117 m_viewportY += scrollinc;
1118 ScrollWindow( 0, -m_cellsize * scrollinc, (const wxRect *) NULL);
1119 }
1120 }
1121
1122 void LifeCanvas::OnEraseBackground(wxEraseEvent& WXUNUSED(event))
1123 {
1124 // do nothing. I just don't want the background to be erased, you know.
1125 }
wxWidgets (Impactor)