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Enhanced stock labels usage. Source cleaning.
[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 // RCS-ID: $Id$
8 // Copyright: (c) 2000, Guillermo Rodriguez Garcia
9 // Licence: wxWindows licence
10 /////////////////////////////////////////////////////////////////////////////
11
12 // ==========================================================================
13 // headers, declarations, constants
14 // ==========================================================================
15
16 #ifdef __GNUG__
17 #pragma implementation "life.h"
18 #endif
19
20 // For compilers that support precompilation, includes "wx/wx.h".
21 #include "wx/wxprec.h"
22
23 #ifdef __BORLANDC__
24 #pragma hdrstop
25 #endif
26
27 #ifndef WX_PRECOMP
28 #include "wx/wx.h"
29 #endif
30
31 #include "wx/statline.h"
32 #include "wx/wfstream.h"
33 #include "wx/filedlg.h"
34 #include "wx/stockitem.h"
35
36 #include "life.h"
37 #include "game.h"
38 #include "dialogs.h"
39 #include "reader.h"
40
41 // --------------------------------------------------------------------------
42 // resources
43 // --------------------------------------------------------------------------
44
45 #if defined(__WXGTK__) || defined(__WXMOTIF__) || defined(__WXMAC__) || defined(__WXMGL__) || defined(__WXX11__)
46 // application icon
47 #include "mondrian.xpm"
48
49 // bitmap buttons for the toolbar
50 #include "bitmaps/reset.xpm"
51 #include "bitmaps/open.xpm"
52 #include "bitmaps/play.xpm"
53 #include "bitmaps/stop.xpm"
54 #include "bitmaps/zoomin.xpm"
55 #include "bitmaps/zoomout.xpm"
56 #include "bitmaps/info.xpm"
57
58 // navigator
59 #include "bitmaps/north.xpm"
60 #include "bitmaps/south.xpm"
61 #include "bitmaps/east.xpm"
62 #include "bitmaps/west.xpm"
63 #include "bitmaps/center.xpm"
64 #endif
65
66 // --------------------------------------------------------------------------
67 // constants
68 // --------------------------------------------------------------------------
69
70 // IDs for the controls and the menu commands. Exluding those already defined
71 // by wxWidgets, such as wxID_NEW.
72 enum
73 {
74 // timer
75 ID_TIMER = wxID_HIGHEST,
76
77 // file menu
78 ID_SAMPLES,
79
80 // view menu
81 ID_SHOWNAV,
82 ID_ORIGIN,
83 ID_CENTER,
84 ID_NORTH,
85 ID_SOUTH,
86 ID_EAST,
87 ID_WEST,
88 ID_INFO,
89
90 // game menu
91 ID_START,
92 ID_STEP,
93 ID_TOPSPEED,
94
95 // speed selection slider
96 ID_SLIDER
97 };
98
99 // --------------------------------------------------------------------------
100 // event tables and other macros for wxWidgets
101 // --------------------------------------------------------------------------
102
103 // Event tables
104 BEGIN_EVENT_TABLE(LifeFrame, wxFrame)
105 EVT_MENU (wxID_NEW, LifeFrame::OnMenu)
106 EVT_MENU (wxID_OPEN, LifeFrame::OnOpen)
107 EVT_MENU (ID_SAMPLES, LifeFrame::OnSamples)
108 EVT_MENU (wxID_ABOUT, LifeFrame::OnMenu)
109 EVT_MENU (wxID_EXIT, LifeFrame::OnMenu)
110 EVT_MENU (ID_SHOWNAV, LifeFrame::OnMenu)
111 EVT_MENU (ID_ORIGIN, LifeFrame::OnNavigate)
112 EVT_BUTTON (ID_CENTER, LifeFrame::OnNavigate)
113 EVT_BUTTON (ID_NORTH, LifeFrame::OnNavigate)
114 EVT_BUTTON (ID_SOUTH, LifeFrame::OnNavigate)
115 EVT_BUTTON (ID_EAST, LifeFrame::OnNavigate)
116 EVT_BUTTON (ID_WEST, LifeFrame::OnNavigate)
117 EVT_MENU (wxID_ZOOM_IN, LifeFrame::OnZoom)
118 EVT_MENU (wxID_ZOOM_OUT,LifeFrame::OnZoom)
119 EVT_MENU (ID_INFO, LifeFrame::OnMenu)
120 EVT_MENU (ID_START, LifeFrame::OnMenu)
121 EVT_MENU (ID_STEP, LifeFrame::OnMenu)
122 EVT_MENU (wxID_STOP, LifeFrame::OnMenu)
123 EVT_MENU (ID_TOPSPEED, LifeFrame::OnMenu)
124 EVT_COMMAND_SCROLL (ID_SLIDER, LifeFrame::OnSlider)
125 EVT_TIMER (ID_TIMER, LifeFrame::OnTimer)
126 EVT_CLOSE ( LifeFrame::OnClose)
127 END_EVENT_TABLE()
128
129 BEGIN_EVENT_TABLE(LifeNavigator, wxMiniFrame)
130 EVT_CLOSE ( LifeNavigator::OnClose)
131 END_EVENT_TABLE()
132
133 BEGIN_EVENT_TABLE(LifeCanvas, wxWindow)
134 EVT_PAINT ( LifeCanvas::OnPaint)
135 EVT_SCROLLWIN ( LifeCanvas::OnScroll)
136 EVT_SIZE ( LifeCanvas::OnSize)
137 EVT_MOTION ( LifeCanvas::OnMouse)
138 EVT_LEFT_DOWN ( LifeCanvas::OnMouse)
139 EVT_LEFT_UP ( LifeCanvas::OnMouse)
140 EVT_LEFT_DCLICK ( LifeCanvas::OnMouse)
141 EVT_ERASE_BACKGROUND( LifeCanvas::OnEraseBackground)
142 END_EVENT_TABLE()
143
144
145 // Create a new application object
146 IMPLEMENT_APP(LifeApp)
147
148
149 // ==========================================================================
150 // implementation
151 // ==========================================================================
152
153 // some shortcuts
154 #define ADD_TOOL(id, bmp, tooltip, help) \
155 toolBar->AddTool(id, bmp, wxNullBitmap, false, wxDefaultCoord, wxDefaultCoord, (wxObject *)NULL, tooltip, help)
156
157
158 // --------------------------------------------------------------------------
159 // LifeApp
160 // --------------------------------------------------------------------------
161
162 // 'Main program' equivalent: the program execution "starts" here
163 bool LifeApp::OnInit()
164 {
165 // create the main application window
166 LifeFrame *frame = new LifeFrame();
167
168 // show it and tell the application that it's our main window
169 frame->Show(true);
170 SetTopWindow(frame);
171
172 // just for Motif
173 #ifdef __WXMOTIF__
174 frame->UpdateInfoText();
175 #endif
176
177 // enter the main message loop and run the app
178 return true;
179 }
180
181 // --------------------------------------------------------------------------
182 // LifeFrame
183 // --------------------------------------------------------------------------
184
185 // frame constructor
186 LifeFrame::LifeFrame() : wxFrame( (wxFrame *) NULL, wxID_ANY,
187 _("Life!"), wxPoint(200, 200) )
188 {
189 // frame icon
190 SetIcon(wxICON(mondrian));
191
192 // menu bar
193 wxMenu *menuFile = new wxMenu(wxMENU_TEAROFF);
194 wxMenu *menuView = new wxMenu(wxMENU_TEAROFF);
195 wxMenu *menuGame = new wxMenu(wxMENU_TEAROFF);
196 wxMenu *menuHelp = new wxMenu(wxMENU_TEAROFF);
197
198 menuFile->Append(wxID_NEW, wxGetStockLabel(wxID_NEW), _("Start a new game"));
199 menuFile->Append(wxID_OPEN, wxGetStockLabel(wxID_OPEN), _("Open an existing Life pattern"));
200 menuFile->Append(ID_SAMPLES, _("&Sample game..."), _("Select a sample configuration"));
201 menuFile->AppendSeparator();
202 menuFile->Append(wxID_EXIT, wxGetStockLabel(wxID_EXIT, true, _T("Alt-X")), _("Quit this program"));
203
204 menuView->Append(ID_SHOWNAV, _("Navigation &toolbox"), _("Show or hide toolbox"), wxITEM_CHECK);
205 menuView->Check(ID_SHOWNAV, true);
206 menuView->AppendSeparator();
207 menuView->Append(ID_ORIGIN, _("&Absolute origin"), _("Go to (0, 0)"));
208 menuView->Append(ID_CENTER, _("&Center of mass"), _("Find center of mass"));
209 menuView->Append(ID_NORTH, _("&North"), _("Find northernmost cell"));
210 menuView->Append(ID_SOUTH, _("&South"), _("Find southernmost cell"));
211 menuView->Append(ID_EAST, _("&East"), _("Find easternmost cell"));
212 menuView->Append(ID_WEST, _("&West"), _("Find westernmost cell"));
213 menuView->AppendSeparator();
214 menuView->Append(wxID_ZOOM_IN, wxGetStockLabel(wxID_ZOOM_IN, true, _T("Ctrl-I")), _("Zoom in"));
215 menuView->Append(wxID_ZOOM_OUT, wxGetStockLabel(wxID_ZOOM_OUT, true, _T("Ctrl-O")), _("Zoom out"));
216 menuView->Append(ID_INFO, _("&Description\tCtrl-D"), _("View pattern description"));
217
218 menuGame->Append(ID_START, _("&Start\tCtrl-S"), _("Start"));
219 menuGame->Append(ID_STEP, _("&Next\tCtrl-N"), _("Single step"));
220 menuGame->Append(wxID_STOP, wxGetStockLabel(wxID_STOP, true, _T("Ctrl-T")), _("Stop"));
221 menuGame->Enable(wxID_STOP, false);
222 menuGame->AppendSeparator();
223 menuGame->Append(ID_TOPSPEED, _("T&op speed!"), _("Go as fast as possible"));
224
225 menuHelp->Append(wxID_ABOUT, _("&About\tCtrl-A"), _("Show about dialog"));
226
227 wxMenuBar *menuBar = new wxMenuBar();
228 menuBar->Append(menuFile, _("&File"));
229 menuBar->Append(menuView, _("&View"));
230 menuBar->Append(menuGame, _("&Game"));
231 menuBar->Append(menuHelp, _("&Help"));
232 SetMenuBar(menuBar);
233
234 // tool bar
235 wxBitmap tbBitmaps[7];
236
237 tbBitmaps[0] = wxBITMAP(reset);
238 tbBitmaps[1] = wxBITMAP(open);
239 tbBitmaps[2] = wxBITMAP(zoomin);
240 tbBitmaps[3] = wxBITMAP(zoomout);
241 tbBitmaps[4] = wxBITMAP(info);
242 tbBitmaps[5] = wxBITMAP(play);
243 tbBitmaps[6] = wxBITMAP(stop);
244
245 wxToolBar *toolBar = CreateToolBar();
246 toolBar->SetMargins(5, 5);
247 toolBar->SetToolBitmapSize(wxSize(16, 16));
248
249 ADD_TOOL(wxID_NEW, tbBitmaps[0], wxGetStockLabel(wxID_NEW, false), _("Start a new game"));
250 ADD_TOOL(wxID_OPEN, tbBitmaps[1], wxGetStockLabel(wxID_OPEN, false), _("Open an existing Life pattern"));
251 toolBar->AddSeparator();
252 ADD_TOOL(wxID_ZOOM_IN, tbBitmaps[2], wxGetStockLabel(wxID_ZOOM_IN, false), _("Zoom in"));
253 ADD_TOOL(wxID_ZOOM_OUT, tbBitmaps[3], wxGetStockLabel(wxID_ZOOM_OUT, false), _("Zoom out"));
254 ADD_TOOL(ID_INFO, tbBitmaps[4], _("Description"), _("Show description"));
255 toolBar->AddSeparator();
256 ADD_TOOL(ID_START, tbBitmaps[5], _("Start"), _("Start"));
257 ADD_TOOL(wxID_STOP, tbBitmaps[6], wxGetStockLabel(wxID_STOP, false), _("Stop"));
258
259 toolBar->Realize();
260 toolBar->EnableTool(wxID_STOP, false); // must be after Realize() !
261
262 #if wxUSE_STATUSBAR
263 // status bar
264 CreateStatusBar(2);
265 SetStatusText(_("Welcome to Life!"));
266 #endif // wxUSE_STATUSBAR
267
268 // game and timer
269 m_life = new Life();
270 m_timer = new wxTimer(this, ID_TIMER);
271 m_running = false;
272 m_topspeed = false;
273 m_interval = 500;
274 m_tics = 0;
275
276 // We use two different panels to reduce flicker in wxGTK, because
277 // some widgets (like wxStaticText) don't have their own X11 window,
278 // and thus updating the text would result in a refresh of the canvas
279 // if they belong to the same parent.
280
281 wxPanel *panel1 = new wxPanel(this, wxID_ANY);
282 wxPanel *panel2 = new wxPanel(this, wxID_ANY);
283
284 // canvas
285 m_canvas = new LifeCanvas(panel1, m_life);
286
287 // info panel
288 m_text = new wxStaticText(panel2, wxID_ANY,
289 wxEmptyString,
290 wxDefaultPosition,
291 wxDefaultSize,
292 wxALIGN_CENTER | wxST_NO_AUTORESIZE);
293
294 wxSlider *slider = new wxSlider(panel2, ID_SLIDER,
295 5, 1, 10,
296 wxDefaultPosition,
297 wxSize(200, wxDefaultCoord),
298 wxSL_HORIZONTAL | wxSL_AUTOTICKS);
299
300 UpdateInfoText();
301
302 // component layout
303 wxBoxSizer *sizer1 = new wxBoxSizer(wxVERTICAL);
304 wxBoxSizer *sizer2 = new wxBoxSizer(wxVERTICAL);
305 wxBoxSizer *sizer3 = new wxBoxSizer(wxVERTICAL);
306
307 #if wxUSE_STATLINE
308 sizer1->Add( new wxStaticLine(panel1, wxID_ANY), 0, wxGROW );
309 #endif // wxUSE_STATLINE
310 sizer1->Add( m_canvas, 1, wxGROW | wxALL, 2 );
311 #if wxUSE_STATLINE
312 sizer1->Add( new wxStaticLine(panel1, wxID_ANY), 0, wxGROW );
313 #endif // wxUSE_STATLINE
314 panel1->SetSizer( sizer1 );
315 sizer1->Fit( panel1 );
316
317 sizer2->Add( m_text, 0, wxGROW | wxTOP, 4 );
318 sizer2->Add( slider, 0, wxCENTRE | wxALL, 4 );
319
320 panel2->SetSizer( sizer2 );
321 sizer2->Fit( panel2 );
322
323 sizer3->Add( panel1, 1, wxGROW );
324 sizer3->Add( panel2, 0, wxGROW );
325 SetSizer( sizer3 );
326 sizer3->Fit( this );
327
328 // set minimum frame size
329 sizer3->SetSizeHints( this );
330
331 // navigator frame
332 m_navigator = new LifeNavigator(this);
333 }
334
335 LifeFrame::~LifeFrame()
336 {
337 delete m_timer;
338 }
339
340 void LifeFrame::UpdateInfoText()
341 {
342 wxString msg;
343
344 msg.Printf(_(" Generation: %u (T: %u ms), Population: %u "),
345 m_tics,
346 m_topspeed? 0 : m_interval,
347 m_life->GetNumCells());
348 m_text->SetLabel(msg);
349 }
350
351 // Enable or disable tools and menu entries according to the current
352 // state. See also wxEVT_UPDATE_UI events for a slightly different
353 // way to do this.
354 void LifeFrame::UpdateUI()
355 {
356 // start / stop
357 GetToolBar()->EnableTool(ID_START, !m_running);
358 GetToolBar()->EnableTool(wxID_STOP, m_running);
359 GetMenuBar()->Enable(ID_START, !m_running);
360 GetMenuBar()->Enable(ID_STEP, !m_running);
361 GetMenuBar()->Enable(wxID_STOP, m_running);
362 GetMenuBar()->Enable(ID_TOPSPEED, !m_topspeed);
363
364 // zooming
365 int cellsize = m_canvas->GetCellSize();
366 GetToolBar()->EnableTool(wxID_ZOOM_IN, cellsize < 32);
367 GetToolBar()->EnableTool(wxID_ZOOM_OUT, cellsize > 1);
368 GetMenuBar()->Enable(wxID_ZOOM_IN, cellsize < 32);
369 GetMenuBar()->Enable(wxID_ZOOM_OUT, cellsize > 1);
370 }
371
372 // Event handlers -----------------------------------------------------------
373
374 // OnMenu handles all events which don't have their own event handler
375 void LifeFrame::OnMenu(wxCommandEvent& event)
376 {
377 switch (event.GetId())
378 {
379 case wxID_NEW:
380 {
381 // stop if it was running
382 OnStop();
383 m_life->Clear();
384 m_canvas->Recenter(0, 0);
385 m_tics = 0;
386 UpdateInfoText();
387 break;
388 }
389 case wxID_ABOUT:
390 {
391 LifeAboutDialog dialog(this);
392 dialog.ShowModal();
393 break;
394 }
395 case wxID_EXIT:
396 {
397 // true is to force the frame to close
398 Close(true);
399 break;
400 }
401 case ID_SHOWNAV:
402 {
403 bool checked = GetMenuBar()->GetMenu(1)->IsChecked(ID_SHOWNAV);
404 m_navigator->Show(checked);
405 break;
406 }
407 case ID_INFO:
408 {
409 wxString desc = m_life->GetDescription();
410
411 if ( desc.empty() )
412 desc = _("Not available");
413
414 // should we make the description editable here?
415 wxMessageBox(desc, _("Description"), wxOK | wxICON_INFORMATION);
416
417 break;
418 }
419 case ID_START : OnStart(); break;
420 case ID_STEP : OnStep(); break;
421 case wxID_STOP : OnStop(); break;
422 case ID_TOPSPEED:
423 {
424 m_running = true;
425 m_topspeed = true;
426 UpdateUI();
427 while (m_running && m_topspeed)
428 {
429 OnStep();
430 wxYield();
431 }
432 break;
433 }
434 }
435 }
436
437 void LifeFrame::OnOpen(wxCommandEvent& WXUNUSED(event))
438 {
439 wxFileDialog filedlg(this,
440 _("Choose a file to open"),
441 wxEmptyString,
442 wxEmptyString,
443 _("Life patterns (*.lif)|*.lif|All files (*.*)|*.*"),
444 wxOPEN | wxFILE_MUST_EXIST);
445
446 if (filedlg.ShowModal() == wxID_OK)
447 {
448 wxFileInputStream stream(filedlg.GetPath());
449 LifeReader reader(stream);
450
451 // the reader handles errors itself, no need to do anything here
452 if (reader.IsOk())
453 {
454 // stop if running and put the pattern
455 OnStop();
456 m_life->Clear();
457 m_life->SetPattern(reader.GetPattern());
458
459 // recenter canvas
460 m_canvas->Recenter(0, 0);
461 m_tics = 0;
462 UpdateInfoText();
463 }
464 }
465 }
466
467 void LifeFrame::OnSamples(wxCommandEvent& WXUNUSED(event))
468 {
469 // stop if it was running
470 OnStop();
471
472 // dialog box
473 LifeSamplesDialog dialog(this);
474
475 if (dialog.ShowModal() == wxID_OK)
476 {
477 const LifePattern pattern = dialog.GetPattern();
478
479 // put the pattern
480 m_life->Clear();
481 m_life->SetPattern(pattern);
482
483 // recenter canvas
484 m_canvas->Recenter(0, 0);
485 m_tics = 0;
486 UpdateInfoText();
487 }
488 }
489
490 void LifeFrame::OnZoom(wxCommandEvent& event)
491 {
492 int cellsize = m_canvas->GetCellSize();
493
494 if ((event.GetId() == wxID_ZOOM_IN) && cellsize < 32)
495 {
496 m_canvas->SetCellSize(cellsize * 2);
497 UpdateUI();
498 }
499 else if ((event.GetId() == wxID_ZOOM_OUT) && cellsize > 1)
500 {
501 m_canvas->SetCellSize(cellsize / 2);
502 UpdateUI();
503 }
504 }
505
506 void LifeFrame::OnNavigate(wxCommandEvent& event)
507 {
508 LifeCell c;
509
510 switch (event.GetId())
511 {
512 case ID_NORTH: c = m_life->FindNorth(); break;
513 case ID_SOUTH: c = m_life->FindSouth(); break;
514 case ID_WEST: c = m_life->FindWest(); break;
515 case ID_EAST: c = m_life->FindEast(); break;
516 case ID_CENTER: c = m_life->FindCenter(); break;
517 default :
518 wxFAIL;
519 // Fall through!
520 case ID_ORIGIN: c.i = c.j = 0; break;
521 }
522
523 m_canvas->Recenter(c.i, c.j);
524 }
525
526 void LifeFrame::OnSlider(wxScrollEvent& event)
527 {
528 m_interval = event.GetPosition() * 100;
529
530 if (m_running)
531 {
532 OnStop();
533 OnStart();
534 }
535
536 UpdateInfoText();
537 }
538
539 void LifeFrame::OnTimer(wxTimerEvent& WXUNUSED(event))
540 {
541 OnStep();
542 }
543
544 void LifeFrame::OnClose(wxCloseEvent& WXUNUSED(event))
545 {
546 // Stop if it was running; this is absolutely needed because
547 // the frame won't be actually destroyed until there are no
548 // more pending events, and this in turn won't ever happen
549 // if the timer is running faster than the window can redraw.
550 OnStop();
551 Destroy();
552 }
553
554 void LifeFrame::OnStart()
555 {
556 if (!m_running)
557 {
558 m_timer->Start(m_interval);
559 m_running = true;
560 UpdateUI();
561 }
562 }
563
564 void LifeFrame::OnStop()
565 {
566 if (m_running)
567 {
568 m_timer->Stop();
569 m_running = false;
570 m_topspeed = false;
571 UpdateUI();
572 }
573 }
574
575 void LifeFrame::OnStep()
576 {
577 if (m_life->NextTic())
578 m_tics++;
579 else
580 OnStop();
581
582 m_canvas->DrawChanged();
583 UpdateInfoText();
584 }
585
586
587 // --------------------------------------------------------------------------
588 // LifeNavigator miniframe
589 // --------------------------------------------------------------------------
590
591 LifeNavigator::LifeNavigator(wxWindow *parent)
592 : wxMiniFrame(parent, wxID_ANY,
593 _("Navigation"),
594 wxDefaultPosition,
595 wxDefaultSize,
596 wxCAPTION | wxSIMPLE_BORDER)
597 {
598 wxPanel *panel = new wxPanel(this, wxID_ANY);
599 wxBoxSizer *sizer1 = new wxBoxSizer(wxVERTICAL);
600 wxBoxSizer *sizer2 = new wxBoxSizer(wxHORIZONTAL);
601
602 // create bitmaps and masks for the buttons
603 wxBitmap
604 bmpn = wxBITMAP(north),
605 bmpw = wxBITMAP(west),
606 bmpc = wxBITMAP(center),
607 bmpe = wxBITMAP(east),
608 bmps = wxBITMAP(south);
609
610 #if !defined(__WXGTK__) && !defined(__WXMOTIF__) && !defined(__WXMAC__)
611 bmpn.SetMask(new wxMask(bmpn, *wxLIGHT_GREY));
612 bmpw.SetMask(new wxMask(bmpw, *wxLIGHT_GREY));
613 bmpc.SetMask(new wxMask(bmpc, *wxLIGHT_GREY));
614 bmpe.SetMask(new wxMask(bmpe, *wxLIGHT_GREY));
615 bmps.SetMask(new wxMask(bmps, *wxLIGHT_GREY));
616 #endif
617
618 // create the buttons and attach tooltips to them
619 wxBitmapButton
620 *bn = new wxBitmapButton(panel, ID_NORTH, bmpn),
621 *bw = new wxBitmapButton(panel, ID_WEST , bmpw),
622 *bc = new wxBitmapButton(panel, ID_CENTER, bmpc),
623 *be = new wxBitmapButton(panel, ID_EAST , bmpe),
624 *bs = new wxBitmapButton(panel, ID_SOUTH, bmps);
625
626 #if wxUSE_TOOLTIPS
627 bn->SetToolTip(_("Find northernmost cell"));
628 bw->SetToolTip(_("Find westernmost cell"));
629 bc->SetToolTip(_("Find center of mass"));
630 be->SetToolTip(_("Find easternmost cell"));
631 bs->SetToolTip(_("Find southernmost cell"));
632 #endif
633
634 // add buttons to sizers
635 sizer2->Add( bw, 0, wxCENTRE | wxWEST, 4 );
636 sizer2->Add( bc, 0, wxCENTRE);
637 sizer2->Add( be, 0, wxCENTRE | wxEAST, 4 );
638 sizer1->Add( bn, 0, wxCENTRE | wxNORTH, 4 );
639 sizer1->Add( sizer2 );
640 sizer1->Add( bs, 0, wxCENTRE | wxSOUTH, 4 );
641
642 // set the panel and miniframe size
643 panel->SetSizer(sizer1);
644
645 sizer1->Fit(panel);
646 SetClientSize(panel->GetSize());
647 wxSize sz = GetSize();
648 SetSizeHints(sz.x, sz.y, sz.x, sz.y);
649
650 // move it to a sensible position
651 wxRect parentRect = parent->GetRect();
652 wxSize childSize = GetSize();
653 int x = parentRect.GetX() +
654 parentRect.GetWidth();
655 int y = parentRect.GetY() +
656 (parentRect.GetHeight() - childSize.GetHeight()) / 4;
657 Move(x, y);
658
659 // done
660 Show(true);
661 }
662
663 void LifeNavigator::OnClose(wxCloseEvent& event)
664 {
665 // avoid if we can
666 if (event.CanVeto())
667 event.Veto();
668 else
669 Destroy();
670 }
671
672
673 // --------------------------------------------------------------------------
674 // LifeCanvas
675 // --------------------------------------------------------------------------
676
677 // canvas constructor
678 LifeCanvas::LifeCanvas(wxWindow *parent, Life *life, bool interactive)
679 : wxWindow(parent, wxID_ANY, wxDefaultPosition, wxSize(100, 100),
680 wxSUNKEN_BORDER|wxFULL_REPAINT_ON_RESIZE)
681 {
682 m_life = life;
683 m_interactive = interactive;
684 m_cellsize = 8;
685 m_status = MOUSE_NOACTION;
686 m_viewportX = 0;
687 m_viewportY = 0;
688 m_viewportH = 0;
689 m_viewportW = 0;
690
691 if (m_interactive)
692 SetCursor(*wxCROSS_CURSOR);
693
694 // reduce flicker if wxEVT_ERASE_BACKGROUND is not available
695 SetBackgroundColour(*wxWHITE);
696 }
697
698 LifeCanvas::~LifeCanvas()
699 {
700 delete m_life;
701 }
702
703 // recenter at the given position
704 void LifeCanvas::Recenter(wxInt32 i, wxInt32 j)
705 {
706 m_viewportX = i - m_viewportW / 2;
707 m_viewportY = j - m_viewportH / 2;
708
709 // redraw everything
710 Refresh(false);
711 }
712
713 // set the cell size and refresh display
714 void LifeCanvas::SetCellSize(int cellsize)
715 {
716 m_cellsize = cellsize;
717
718 // find current center
719 wxInt32 cx = m_viewportX + m_viewportW / 2;
720 wxInt32 cy = m_viewportY + m_viewportH / 2;
721
722 // get current canvas size and adjust viewport accordingly
723 int w, h;
724 GetClientSize(&w, &h);
725 m_viewportW = (w + m_cellsize - 1) / m_cellsize;
726 m_viewportH = (h + m_cellsize - 1) / m_cellsize;
727
728 // recenter
729 m_viewportX = cx - m_viewportW / 2;
730 m_viewportY = cy - m_viewportH / 2;
731
732 // adjust scrollbars
733 if (m_interactive)
734 {
735 SetScrollbar(wxHORIZONTAL, m_viewportW, m_viewportW, 3 * m_viewportW);
736 SetScrollbar(wxVERTICAL, m_viewportH, m_viewportH, 3 * m_viewportH);
737 m_thumbX = m_viewportW;
738 m_thumbY = m_viewportH;
739 }
740
741 Refresh(false);
742 }
743
744 // draw a cell
745 void LifeCanvas::DrawCell(wxInt32 i, wxInt32 j, bool alive)
746 {
747 wxClientDC dc(this);
748
749 dc.SetPen(alive? *wxBLACK_PEN : *wxWHITE_PEN);
750 dc.SetBrush(alive? *wxBLACK_BRUSH : *wxWHITE_BRUSH);
751
752 dc.BeginDrawing();
753 DrawCell(i, j, dc);
754 dc.EndDrawing();
755 }
756
757 void LifeCanvas::DrawCell(wxInt32 i, wxInt32 j, wxDC &dc)
758 {
759 wxCoord x = CellToX(i);
760 wxCoord y = CellToY(j);
761
762 // if cellsize is 1 or 2, there will be no grid
763 switch (m_cellsize)
764 {
765 case 1:
766 dc.DrawPoint(x, y);
767 break;
768 case 2:
769 dc.DrawRectangle(x, y, 2, 2);
770 break;
771 default:
772 dc.DrawRectangle(x + 1, y + 1, m_cellsize - 1, m_cellsize - 1);
773 }
774 }
775
776 // draw all changed cells
777 void LifeCanvas::DrawChanged()
778 {
779 wxClientDC dc(this);
780
781 size_t ncells;
782 LifeCell *cells;
783 bool done = false;
784
785 m_life->BeginFind(m_viewportX,
786 m_viewportY,
787 m_viewportX + m_viewportW,
788 m_viewportY + m_viewportH,
789 true);
790
791 dc.BeginDrawing();
792
793 if (m_cellsize == 1)
794 {
795 dc.SetPen(*wxBLACK_PEN);
796 }
797 else
798 {
799 dc.SetPen(*wxTRANSPARENT_PEN);
800 dc.SetBrush(*wxBLACK_BRUSH);
801 }
802 dc.SetLogicalFunction(wxINVERT);
803
804 while (!done)
805 {
806 done = m_life->FindMore(&cells, &ncells);
807
808 for (size_t m = 0; m < ncells; m++)
809 DrawCell(cells[m].i, cells[m].j, dc);
810 }
811 dc.EndDrawing();
812 }
813
814 // event handlers
815 void LifeCanvas::OnPaint(wxPaintEvent& WXUNUSED(event))
816 {
817 wxPaintDC dc(this);
818 wxRect rect = GetUpdateRegion().GetBox();
819 wxCoord x, y, w, h;
820 wxInt32 i0, j0, i1, j1;
821
822 // find damaged area
823 x = rect.GetX();
824 y = rect.GetY();
825 w = rect.GetWidth();
826 h = rect.GetHeight();
827
828 i0 = XToCell(x);
829 j0 = YToCell(y);
830 i1 = XToCell(x + w - 1);
831 j1 = YToCell(y + h - 1);
832
833 size_t ncells;
834 LifeCell *cells;
835
836 m_life->BeginFind(i0, j0, i1, j1, false);
837 bool done = m_life->FindMore(&cells, &ncells);
838
839 // erase all damaged cells and draw the grid
840 dc.BeginDrawing();
841 dc.SetBrush(*wxWHITE_BRUSH);
842
843 if (m_cellsize <= 2)
844 {
845 // no grid
846 dc.SetPen(*wxWHITE_PEN);
847 dc.DrawRectangle(x, y, w, h);
848 }
849 else
850 {
851 x = CellToX(i0);
852 y = CellToY(j0);
853 w = CellToX(i1 + 1) - x + 1;
854 h = CellToY(j1 + 1) - y + 1;
855
856 dc.SetPen(*wxLIGHT_GREY_PEN);
857 for (wxInt32 yy = y; yy <= (y + h - m_cellsize); yy += m_cellsize)
858 dc.DrawRectangle(x, yy, w, m_cellsize + 1);
859 for (wxInt32 xx = x; xx <= (x + w - m_cellsize); xx += m_cellsize)
860 dc.DrawLine(xx, y, xx, y + h);
861 }
862
863 // draw all alive cells
864 dc.SetPen(*wxBLACK_PEN);
865 dc.SetBrush(*wxBLACK_BRUSH);
866
867 while (!done)
868 {
869 for (size_t m = 0; m < ncells; m++)
870 DrawCell(cells[m].i, cells[m].j, dc);
871
872 done = m_life->FindMore(&cells, &ncells);
873 }
874
875 // last set
876 for (size_t m = 0; m < ncells; m++)
877 DrawCell(cells[m].i, cells[m].j, dc);
878
879 dc.EndDrawing();
880 }
881
882 void LifeCanvas::OnMouse(wxMouseEvent& event)
883 {
884 if (!m_interactive)
885 return;
886
887 // which cell are we pointing at?
888 wxInt32 i = XToCell( event.GetX() );
889 wxInt32 j = YToCell( event.GetY() );
890
891 #if wxUSE_STATUSBAR
892 // set statusbar text
893 wxString msg;
894 msg.Printf(_("Cell: (%d, %d)"), i, j);
895 ((LifeFrame *) wxGetApp().GetTopWindow())->SetStatusText(msg, 1);
896 #endif // wxUSE_STATUSBAR
897
898 // NOTE that wxMouseEvent::LeftDown() and wxMouseEvent::LeftIsDown()
899 // have different semantics. The first one is used to signal that the
900 // button was just pressed (i.e., in "button down" events); the second
901 // one just describes the current status of the button, independently
902 // of the mouse event type. LeftIsDown is typically used in "mouse
903 // move" events, to test if the button is _still_ pressed.
904
905 // is the button down?
906 if (!event.LeftIsDown())
907 {
908 m_status = MOUSE_NOACTION;
909 return;
910 }
911
912 // was it pressed just now?
913 if (event.LeftDown())
914 {
915 // yes: start a new action and toggle this cell
916 m_status = (m_life->IsAlive(i, j)? MOUSE_ERASING : MOUSE_DRAWING);
917
918 m_mi = i;
919 m_mj = j;
920 m_life->SetCell(i, j, m_status == MOUSE_DRAWING);
921 DrawCell(i, j, m_status == MOUSE_DRAWING);
922 }
923 else if ((m_mi != i) || (m_mj != j))
924 {
925 // no: continue ongoing action
926 bool alive = (m_status == MOUSE_DRAWING);
927
928 // prepare DC and pen + brush to optimize drawing
929 wxClientDC dc(this);
930 dc.SetPen(alive? *wxBLACK_PEN : *wxWHITE_PEN);
931 dc.SetBrush(alive? *wxBLACK_BRUSH : *wxWHITE_BRUSH);
932 dc.BeginDrawing();
933
934 // draw a line of cells using Bresenham's algorithm
935 wxInt32 d, ii, jj, di, ai, si, dj, aj, sj;
936 di = i - m_mi;
937 ai = abs(di) << 1;
938 si = (di < 0)? -1 : 1;
939 dj = j - m_mj;
940 aj = abs(dj) << 1;
941 sj = (dj < 0)? -1 : 1;
942
943 ii = m_mi;
944 jj = m_mj;
945
946 if (ai > aj)
947 {
948 // iterate over i
949 d = aj - (ai >> 1);
950
951 while (ii != i)
952 {
953 m_life->SetCell(ii, jj, alive);
954 DrawCell(ii, jj, dc);
955 if (d >= 0)
956 {
957 jj += sj;
958 d -= ai;
959 }
960 ii += si;
961 d += aj;
962 }
963 }
964 else
965 {
966 // iterate over j
967 d = ai - (aj >> 1);
968
969 while (jj != j)
970 {
971 m_life->SetCell(ii, jj, alive);
972 DrawCell(ii, jj, dc);
973 if (d >= 0)
974 {
975 ii += si;
976 d -= aj;
977 }
978 jj += sj;
979 d += ai;
980 }
981 }
982
983 // last cell
984 m_life->SetCell(ii, jj, alive);
985 DrawCell(ii, jj, dc);
986 m_mi = ii;
987 m_mj = jj;
988
989 dc.EndDrawing();
990 }
991
992 ((LifeFrame *) wxGetApp().GetTopWindow())->UpdateInfoText();
993 }
994
995 void LifeCanvas::OnSize(wxSizeEvent& event)
996 {
997 // find center
998 wxInt32 cx = m_viewportX + m_viewportW / 2;
999 wxInt32 cy = m_viewportY + m_viewportH / 2;
1000
1001 // get new size
1002 wxCoord w = event.GetSize().GetX();
1003 wxCoord h = event.GetSize().GetY();
1004 m_viewportW = (w + m_cellsize - 1) / m_cellsize;
1005 m_viewportH = (h + m_cellsize - 1) / m_cellsize;
1006
1007 // recenter
1008 m_viewportX = cx - m_viewportW / 2;
1009 m_viewportY = cy - m_viewportH / 2;
1010
1011 // scrollbars
1012 if (m_interactive)
1013 {
1014 SetScrollbar(wxHORIZONTAL, m_viewportW, m_viewportW, 3 * m_viewportW);
1015 SetScrollbar(wxVERTICAL, m_viewportH, m_viewportH, 3 * m_viewportH);
1016 m_thumbX = m_viewportW;
1017 m_thumbY = m_viewportH;
1018 }
1019
1020 // allow default processing
1021 event.Skip();
1022 }
1023
1024 void LifeCanvas::OnScroll(wxScrollWinEvent& event)
1025 {
1026 WXTYPE type = (WXTYPE)event.GetEventType();
1027 int pos = event.GetPosition();
1028 int orient = event.GetOrientation();
1029
1030 // calculate scroll increment
1031 int scrollinc = 0;
1032 if (type == wxEVT_SCROLLWIN_TOP)
1033 {
1034 if (orient == wxHORIZONTAL)
1035 scrollinc = -m_viewportW;
1036 else
1037 scrollinc = -m_viewportH;
1038 }
1039 else
1040 if (type == wxEVT_SCROLLWIN_BOTTOM)
1041 {
1042 if (orient == wxHORIZONTAL)
1043 scrollinc = m_viewportW;
1044 else
1045 scrollinc = m_viewportH;
1046 }
1047 else
1048 if (type == wxEVT_SCROLLWIN_LINEUP)
1049 {
1050 scrollinc = -1;
1051 }
1052 else
1053 if (type == wxEVT_SCROLLWIN_LINEDOWN)
1054 {
1055 scrollinc = +1;
1056 }
1057 else
1058 if (type == wxEVT_SCROLLWIN_PAGEUP)
1059 {
1060 scrollinc = -10;
1061 }
1062 else
1063 if (type == wxEVT_SCROLLWIN_PAGEDOWN)
1064 {
1065 scrollinc = +10;
1066 }
1067 else
1068 if (type == wxEVT_SCROLLWIN_THUMBTRACK)
1069 {
1070 if (orient == wxHORIZONTAL)
1071 {
1072 scrollinc = pos - m_thumbX;
1073 m_thumbX = pos;
1074 }
1075 else
1076 {
1077 scrollinc = pos - m_thumbY;
1078 m_thumbY = pos;
1079 }
1080 }
1081 else
1082 if (type == wxEVT_SCROLLWIN_THUMBRELEASE)
1083 {
1084 m_thumbX = m_viewportW;
1085 m_thumbY = m_viewportH;
1086 }
1087
1088 #if defined(__WXGTK__) || defined(__WXMOTIF__)
1089 // wxGTK and wxMotif update the thumb automatically (wxMSW doesn't);
1090 // so reset it back as we always want it to be in the same position.
1091 if (type != wxEVT_SCROLLWIN_THUMBTRACK)
1092 {
1093 SetScrollbar(wxHORIZONTAL, m_viewportW, m_viewportW, 3 * m_viewportW);
1094 SetScrollbar(wxVERTICAL, m_viewportH, m_viewportH, 3 * m_viewportH);
1095 }
1096 #endif
1097
1098 if (scrollinc == 0) return;
1099
1100 // scroll the window and adjust the viewport
1101 if (orient == wxHORIZONTAL)
1102 {
1103 m_viewportX += scrollinc;
1104 ScrollWindow( -m_cellsize * scrollinc, 0, (const wxRect *) NULL);
1105 }
1106 else
1107 {
1108 m_viewportY += scrollinc;
1109 ScrollWindow( 0, -m_cellsize * scrollinc, (const wxRect *) NULL);
1110 }
1111 }
1112
1113 void LifeCanvas::OnEraseBackground(wxEraseEvent& WXUNUSED(event))
1114 {
1115 // do nothing. I just don't want the background to be erased, you know.
1116 }
1117
1118
wxWidgets (Impactor)