/////////////////////////////////////////////////////////////////////////////
// Name: life.cpp
-// Purpose: The game of life, created by J. H. Conway
+// Purpose: The game of Life, created by J. H. Conway
// Author: Guillermo Rodriguez Garcia, <guille@iies.es>
// Modified by:
// Created: Jan/2000
/////////////////////////////////////////////////////////////////////////////
// ==========================================================================
-// declarations
+// headers, declarations, constants
// ==========================================================================
-// --------------------------------------------------------------------------
-// headers
-// --------------------------------------------------------------------------
-
#ifdef __GNUG__
#pragma implementation "life.h"
#endif
-// for compilers that support precompilation, includes "wx/wx.h"
+// For compilers that support precompilation, includes "wx/wx.h".
#include "wx/wxprec.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
-// for all others, include the necessary headers
#ifndef WX_PRECOMP
#include "wx/wx.h"
#endif
#include "wx/statline.h"
+#include "wx/wfstream.h"
+#include "wx/filedlg.h"
#include "life.h"
#include "game.h"
#include "dialogs.h"
+#include "reader.h"
// --------------------------------------------------------------------------
// resources
// --------------------------------------------------------------------------
-#if defined(__WXGTK__) || defined(__WXMOTIF__)
- // the application icon
+#if defined(__WXGTK__) || defined(__WXMOTIF__) || defined(__WXMAC__) || defined(__WXMGL__) || defined(__WXX11__)
+ // application icon
#include "mondrian.xpm"
// bitmap buttons for the toolbar
#include "bitmaps/reset.xpm"
+ #include "bitmaps/open.xpm"
#include "bitmaps/play.xpm"
#include "bitmaps/stop.xpm"
+ #include "bitmaps/zoomin.xpm"
+ #include "bitmaps/zoomout.xpm"
+ #include "bitmaps/info.xpm"
+
+ // navigator
+ #include "bitmaps/north.xpm"
+ #include "bitmaps/south.xpm"
+ #include "bitmaps/east.xpm"
+ #include "bitmaps/west.xpm"
+ #include "bitmaps/center.xpm"
#endif
// --------------------------------------------------------------------------
// IDs for the controls and the menu commands
enum
{
- // menu items and toolbar buttons
- ID_NEWGAME = 1001,
+ // timer
+ ID_TIMER = 1001,
+
+ // file menu
+ ID_NEW,
+ ID_OPEN,
ID_SAMPLES,
ID_ABOUT,
ID_EXIT,
- ID_CLEAR,
+
+ // view menu
+ ID_SHOWNAV,
+ ID_ORIGIN,
+ ID_CENTER,
+ ID_NORTH,
+ ID_SOUTH,
+ ID_EAST,
+ ID_WEST,
+ ID_ZOOMIN,
+ ID_ZOOMOUT,
+ ID_INFO,
+
+ // game menu
ID_START,
ID_STEP,
ID_STOP,
- ID_WRAP,
+ ID_TOPSPEED,
// speed selection slider
- ID_SLIDER
+ ID_SLIDER,
};
// --------------------------------------------------------------------------
// Event tables
BEGIN_EVENT_TABLE(LifeFrame, wxFrame)
- EVT_MENU (ID_NEWGAME, LifeFrame::OnNewGame)
- EVT_MENU (ID_SAMPLES, LifeFrame::OnSamples)
- EVT_MENU (ID_ABOUT, LifeFrame::OnMenu)
- EVT_MENU (ID_EXIT, LifeFrame::OnMenu)
- EVT_MENU (ID_CLEAR, LifeFrame::OnMenu)
- EVT_MENU (ID_START, LifeFrame::OnMenu)
- EVT_MENU (ID_STEP, LifeFrame::OnMenu)
- EVT_MENU (ID_STOP, LifeFrame::OnMenu)
- EVT_MENU (ID_WRAP, LifeFrame::OnMenu)
- EVT_COMMAND_SCROLL (ID_SLIDER, LifeFrame::OnSlider)
+ EVT_MENU (ID_NEW, LifeFrame::OnMenu)
+ EVT_MENU (ID_OPEN, LifeFrame::OnOpen)
+ EVT_MENU (ID_SAMPLES, LifeFrame::OnSamples)
+ EVT_MENU (ID_ABOUT, LifeFrame::OnMenu)
+ EVT_MENU (ID_EXIT, LifeFrame::OnMenu)
+ EVT_MENU (ID_SHOWNAV, LifeFrame::OnMenu)
+ EVT_MENU (ID_ORIGIN, LifeFrame::OnNavigate)
+ EVT_BUTTON (ID_CENTER, LifeFrame::OnNavigate)
+ EVT_BUTTON (ID_NORTH, LifeFrame::OnNavigate)
+ EVT_BUTTON (ID_SOUTH, LifeFrame::OnNavigate)
+ EVT_BUTTON (ID_EAST, LifeFrame::OnNavigate)
+ EVT_BUTTON (ID_WEST, LifeFrame::OnNavigate)
+ EVT_MENU (ID_ZOOMIN, LifeFrame::OnZoom)
+ EVT_MENU (ID_ZOOMOUT, LifeFrame::OnZoom)
+ EVT_MENU (ID_INFO, LifeFrame::OnMenu)
+ EVT_MENU (ID_START, LifeFrame::OnMenu)
+ EVT_MENU (ID_STEP, LifeFrame::OnMenu)
+ EVT_MENU (ID_STOP, LifeFrame::OnMenu)
+ EVT_MENU (ID_TOPSPEED, LifeFrame::OnMenu)
+ EVT_COMMAND_SCROLL (ID_SLIDER, LifeFrame::OnSlider)
+ EVT_TIMER (ID_TIMER, LifeFrame::OnTimer)
+ EVT_CLOSE ( LifeFrame::OnClose)
+END_EVENT_TABLE()
+
+BEGIN_EVENT_TABLE(LifeNavigator, wxMiniFrame)
+ EVT_CLOSE ( LifeNavigator::OnClose)
END_EVENT_TABLE()
-BEGIN_EVENT_TABLE(LifeCanvas, wxScrolledWindow)
- EVT_PAINT ( LifeCanvas::OnPaint)
- EVT_SIZE ( LifeCanvas::OnSize)
- EVT_MOUSE_EVENTS ( LifeCanvas::OnMouse)
+BEGIN_EVENT_TABLE(LifeCanvas, wxWindow)
+ EVT_PAINT ( LifeCanvas::OnPaint)
+ EVT_SCROLLWIN ( LifeCanvas::OnScroll)
+ EVT_SIZE ( LifeCanvas::OnSize)
+ EVT_MOTION ( LifeCanvas::OnMouse)
+ EVT_LEFT_DOWN ( LifeCanvas::OnMouse)
+ EVT_LEFT_UP ( LifeCanvas::OnMouse)
+ EVT_LEFT_DCLICK ( LifeCanvas::OnMouse)
+ EVT_ERASE_BACKGROUND( LifeCanvas::OnEraseBackground)
END_EVENT_TABLE()
// Create a new application object
IMPLEMENT_APP(LifeApp)
+
// ==========================================================================
// implementation
// ==========================================================================
// some shortcuts
-#define ADD_TOOL(a, b, c, d) \
- toolBar->AddTool(a, b, wxNullBitmap, FALSE, -1, -1, (wxObject *)0, c, d)
+#define ADD_TOOL(id, bmp, tooltip, help) \
+ toolBar->AddTool(id, bmp, wxNullBitmap, FALSE, -1, -1, (wxObject *)0, tooltip, help)
-#define GET_FRAME() \
- ((LifeFrame *) wxGetApp().GetTopWindow())
// --------------------------------------------------------------------------
// LifeApp
// --------------------------------------------------------------------------
-// `Main program' equivalent: the program execution "starts" here
+// 'Main program' equivalent: the program execution "starts" here
bool LifeApp::OnInit()
{
// create the main application window
frame->Show(TRUE);
SetTopWindow(frame);
+ // just for Motif
+#ifdef __WXMOTIF__
+ frame->UpdateInfoText();
+#endif
+
// enter the main message loop and run the app
return TRUE;
}
// --------------------------------------------------------------------------
// frame constructor
-LifeFrame::LifeFrame() : wxFrame((wxFrame *)0, -1, _("Life!"), wxPoint(50, 50))
+LifeFrame::LifeFrame() : wxFrame((wxFrame *)0, -1, _("Life!"), wxPoint(200, 200))
{
// frame icon
SetIcon(wxICON(mondrian));
// menu bar
wxMenu *menuFile = new wxMenu("", wxMENU_TEAROFF);
+ wxMenu *menuView = new wxMenu("", wxMENU_TEAROFF);
wxMenu *menuGame = new wxMenu("", wxMENU_TEAROFF);
- menuFile->Append(ID_NEWGAME, _("New game..."), _("Start a new game"));
- menuFile->Append(ID_SAMPLES, _("Sample game..."), _("Select a sample configuration"));
+ menuFile->Append(ID_NEW, _("&New"), _("Start a new game"));
+ menuFile->Append(ID_OPEN, _("&Open..."), _("Open an existing Life pattern"));
+ menuFile->Append(ID_SAMPLES, _("&Sample game..."), _("Select a sample configuration"));
menuFile->AppendSeparator();
menuFile->Append(ID_ABOUT, _("&About...\tCtrl-A"), _("Show about dialog"));
menuFile->AppendSeparator();
menuFile->Append(ID_EXIT, _("E&xit\tAlt-X"), _("Quit this program"));
- menuGame->Append(ID_CLEAR, _("&Clear\tCtrl-C"), _("Clear game field"));
+ menuView->Append(ID_SHOWNAV, _("Navigation &toolbox"), _("Show or hide toolbox"), TRUE);
+ menuView->Check (ID_SHOWNAV, TRUE);
+ menuView->AppendSeparator();
+ menuView->Append(ID_ORIGIN, _("&Absolute origin"), _("Go to (0, 0)"));
+ menuView->Append(ID_CENTER, _("&Center of mass"), _("Find center of mass"));
+ menuView->Append(ID_NORTH, _("&North"), _("Find northernmost cell"));
+ menuView->Append(ID_SOUTH, _("&South"), _("Find southernmost cell"));
+ menuView->Append(ID_EAST, _("&East"), _("Find easternmost cell"));
+ menuView->Append(ID_WEST, _("&West"), _("Find westernmost cell"));
+ menuView->AppendSeparator();
+ menuView->Append(ID_ZOOMIN, _("Zoom &in\tCtrl-I"), _("Zoom in"));
+ menuView->Append(ID_ZOOMOUT, _("Zoom &out\tCtrl-O"), _("Zoom out"));
+ menuView->Append(ID_INFO, _("&Description...\tCtrl-D"), _("View pattern description"));
+
menuGame->Append(ID_START, _("&Start\tCtrl-S"), _("Start"));
menuGame->Append(ID_STEP, _("&Next\tCtrl-N"), _("Single step"));
menuGame->Append(ID_STOP, _("S&top\tCtrl-T"), _("Stop"));
menuGame->Enable(ID_STOP, FALSE);
menuGame->AppendSeparator();
- menuGame->Append(ID_WRAP, _("&Wraparound\tCtrl-W"), _("Wrap around borders"), TRUE);
- menuGame->Check (ID_WRAP, TRUE);
+ menuGame->Append(ID_TOPSPEED, _("T&op speed!"), _("Go as fast as possible"));
wxMenuBar *menuBar = new wxMenuBar();
menuBar->Append(menuFile, _("&File"));
+ menuBar->Append(menuView, _("&View"));
menuBar->Append(menuGame, _("&Game"));
SetMenuBar(menuBar);
// tool bar
- wxBitmap tbBitmaps[3];
+ wxBitmap tbBitmaps[7];
tbBitmaps[0] = wxBITMAP(reset);
- tbBitmaps[1] = wxBITMAP(play);
- tbBitmaps[2] = wxBITMAP(stop);
+ tbBitmaps[1] = wxBITMAP(open);
+ tbBitmaps[2] = wxBITMAP(zoomin);
+ tbBitmaps[3] = wxBITMAP(zoomout);
+ tbBitmaps[4] = wxBITMAP(info);
+ tbBitmaps[5] = wxBITMAP(play);
+ tbBitmaps[6] = wxBITMAP(stop);
wxToolBar *toolBar = CreateToolBar();
toolBar->SetMargins(5, 5);
toolBar->SetToolBitmapSize(wxSize(16, 16));
- ADD_TOOL(ID_CLEAR, tbBitmaps[0], _("Clear"), _("Clear game board"));
- ADD_TOOL(ID_START, tbBitmaps[1], _("Start"), _("Start"));
- ADD_TOOL(ID_STOP , tbBitmaps[2], _("Stop"), _("Stop"));
- toolBar->EnableTool(ID_STOP, FALSE);
+
+ ADD_TOOL(ID_NEW, tbBitmaps[0], _("New"), _("Start a new game"));
+ ADD_TOOL(ID_OPEN, tbBitmaps[1], _("Open"), _("Open an existing Life pattern"));
+ toolBar->AddSeparator();
+ ADD_TOOL(ID_ZOOMIN, tbBitmaps[2], _("Zoom in"), _("Zoom in"));
+ ADD_TOOL(ID_ZOOMOUT, tbBitmaps[3], _("Zoom out"), _("Zoom out"));
+ ADD_TOOL(ID_INFO, tbBitmaps[4], _("Description"), _("Show description"));
+ toolBar->AddSeparator();
+ ADD_TOOL(ID_START, tbBitmaps[5], _("Start"), _("Start"));
+ ADD_TOOL(ID_STOP, tbBitmaps[6], _("Stop"), _("Stop"));
+
toolBar->Realize();
+ toolBar->EnableTool(ID_STOP, FALSE); // must be after Realize() !
// status bar
CreateStatusBar(2);
SetStatusText(_("Welcome to Life!"));
- // game
- wxPanel *panel = new wxPanel(this, -1);
- m_life = new Life(20, 20);
- m_canvas = new LifeCanvas(panel, m_life);
- m_timer = new LifeTimer();
- m_interval = 500;
- m_tics = 0;
- m_text = new wxStaticText(panel, -1, "");
- UpdateInfoText();
+ // game and timer
+ m_life = new Life();
+ m_timer = new wxTimer(this, ID_TIMER);
+ m_running = FALSE;
+ m_topspeed = FALSE;
+ m_interval = 500;
+ m_tics = 0;
+
+ // We use two different panels to reduce flicker in wxGTK, because
+ // some widgets (like wxStaticText) don't have their own X11 window,
+ // and thus updating the text would result in a refresh of the canvas
+ // if they belong to the same parent.
- // slider
- wxSlider *slider = new wxSlider(panel, ID_SLIDER,
+ wxPanel *panel1 = new wxPanel(this, -1);
+ wxPanel *panel2 = new wxPanel(this, -1);
+
+ // canvas
+ m_canvas = new LifeCanvas(panel1, m_life);
+
+ // info panel
+ m_text = new wxStaticText(panel2, -1,
+ wxEmptyString,
+ wxDefaultPosition,
+ wxDefaultSize,
+ wxALIGN_CENTER | wxST_NO_AUTORESIZE);
+
+ wxSlider *slider = new wxSlider(panel2, ID_SLIDER,
5, 1, 10,
wxDefaultPosition,
wxSize(200, -1),
wxSL_HORIZONTAL | wxSL_AUTOTICKS);
+ UpdateInfoText();
+
// component layout
- wxBoxSizer *sizer = new wxBoxSizer(wxVERTICAL);
- sizer->Add(new wxStaticLine(panel, -1), 0, wxGROW | wxCENTRE);
- sizer->Add(m_canvas, 1, wxGROW | wxCENTRE | wxALL, 5);
- sizer->Add(new wxStaticLine(panel, -1), 0, wxGROW | wxCENTRE);
- sizer->Add(m_text, 0, wxCENTRE | wxTOP, 5);
- sizer->Add(slider, 0, wxCENTRE | wxALL, 5);
- panel->SetSizer(sizer);
- panel->SetAutoLayout(TRUE);
- sizer->Fit(this);
- sizer->SetSizeHints(this);
+ wxBoxSizer *sizer1 = new wxBoxSizer(wxVERTICAL);
+ wxBoxSizer *sizer2 = new wxBoxSizer(wxVERTICAL);
+ wxBoxSizer *sizer3 = new wxBoxSizer(wxVERTICAL);
+
+ sizer1->Add( new wxStaticLine(panel1, -1), 0, wxGROW );
+ sizer1->Add( m_canvas, 1, wxGROW | wxALL, 2 );
+ sizer1->Add( new wxStaticLine(panel1, -1), 0, wxGROW );
+ panel1->SetSizer( sizer1 );
+ panel1->SetAutoLayout( TRUE );
+ sizer1->Fit( panel1 );
+
+ sizer2->Add( m_text, 0, wxGROW | wxTOP, 4 );
+ sizer2->Add( slider, 0, wxCENTRE | wxALL, 4 );
+
+ panel2->SetSizer( sizer2 );
+ panel2->SetAutoLayout( TRUE );
+ sizer2->Fit( panel2 );
+
+ sizer3->Add( panel1, 1, wxGROW );
+ sizer3->Add( panel2, 0, wxGROW );
+ SetSizer( sizer3 );
+ SetAutoLayout( TRUE );
+ sizer3->Fit( this );
+
+ // set minimum frame size
+ sizer3->SetSizeHints( this );
+
+ // navigator frame
+ m_navigator = new LifeNavigator(this);
}
LifeFrame::~LifeFrame()
{
delete m_timer;
- delete m_life;
}
void LifeFrame::UpdateInfoText()
{
wxString msg;
- msg.Printf(_("Generation: %u, Interval: %u ms"), m_tics, m_interval);
+ msg.Printf(_(" Generation: %u (T: %u ms), Population: %u "),
+ m_tics,
+ m_topspeed? 0 : m_interval,
+ m_life->GetNumCells());
m_text->SetLabel(msg);
}
-// event handlers
+// Enable or disable tools and menu entries according to the current
+// state. See also wxEVT_UPDATE_UI events for a slightly different
+// way to do this.
+void LifeFrame::UpdateUI()
+{
+ // start / stop
+ GetToolBar()->EnableTool(ID_START, !m_running);
+ GetToolBar()->EnableTool(ID_STOP, m_running);
+ GetMenuBar()->GetMenu(2)->Enable(ID_START, !m_running);
+ GetMenuBar()->GetMenu(2)->Enable(ID_STEP, !m_running);
+ GetMenuBar()->GetMenu(2)->Enable(ID_STOP, m_running);
+
+ // zooming
+ int cellsize = m_canvas->GetCellSize();
+ GetToolBar()->EnableTool(ID_ZOOMIN, cellsize < 32);
+ GetToolBar()->EnableTool(ID_ZOOMOUT, cellsize > 1);
+ GetMenuBar()->GetMenu(1)->Enable(ID_ZOOMIN, cellsize < 32);
+ GetMenuBar()->GetMenu(1)->Enable(ID_ZOOMOUT, cellsize > 1);
+}
+
+// Event handlers -----------------------------------------------------------
+
+// OnMenu handles all events which don't have their own event handler
void LifeFrame::OnMenu(wxCommandEvent& event)
{
switch (event.GetId())
{
- case ID_START : OnStart(); break;
- case ID_STEP : OnTimer(); break;
- case ID_STOP : OnStop(); break;
- case ID_WRAP :
- {
- bool checked = GetMenuBar()->GetMenu(1)->IsChecked(ID_WRAP);
- m_life->SetBorderWrap(checked);
- break;
- }
- case ID_CLEAR :
+ case ID_NEW:
{
+ // stop if it was running
OnStop();
m_life->Clear();
- m_canvas->DrawEverything(TRUE);
- m_canvas->Refresh(FALSE);
+ m_canvas->Recenter(0, 0);
m_tics = 0;
UpdateInfoText();
break;
}
- case ID_ABOUT :
+ case ID_ABOUT:
{
- wxMessageBox(
- _("This is the about dialog of the Life! sample.\n"
- "(c) 2000 Guillermo Rodriguez Garcia"),
- _("About Life!"),
- wxOK | wxICON_INFORMATION,
- this);
+ LifeAboutDialog dialog(this);
+ dialog.ShowModal();
break;
}
- case ID_EXIT :
+ case ID_EXIT:
{
// TRUE is to force the frame to close
Close(TRUE);
break;
}
+ case ID_SHOWNAV :
+ {
+ bool checked = GetMenuBar()->GetMenu(1)->IsChecked(ID_SHOWNAV);
+ m_navigator->Show(checked);
+ break;
+ }
+ case ID_INFO:
+ {
+ wxString desc = m_life->GetDescription();
+
+ if ( desc.IsEmpty() )
+ desc = _("Not available");
+
+ // should we make the description editable here?
+ wxMessageBox(desc, _("Description"), wxOK | wxICON_INFORMATION);
+
+ break;
+ }
+ case ID_START : OnStart(); break;
+ case ID_STEP : OnStep(); break;
+ case ID_STOP : OnStop(); break;
+ case ID_TOPSPEED:
+ {
+ m_running = TRUE;
+ m_topspeed = TRUE;
+ UpdateUI();
+ while (m_running && m_topspeed)
+ {
+ OnStep();
+ wxYield();
+ }
+ break;
+ }
}
}
-void LifeFrame::OnNewGame(wxCommandEvent& WXUNUSED(event))
+void LifeFrame::OnOpen(wxCommandEvent& WXUNUSED(event))
{
- int w = m_life->GetWidth();
- int h = m_life->GetHeight();
-
- // stop if it was running
- OnStop();
-
- // dialog box
- LifeNewGameDialog dialog(this, &w, &h);
-
- // new game?
- if (dialog.ShowModal() == wxID_OK)
+ wxFileDialog filedlg(this,
+ _("Choose a file to open"),
+ _(""),
+ _(""),
+ _("Life patterns (*.lif)|*.lif|All files (*.*)|*.*"),
+ wxOPEN | wxFILE_MUST_EXIST);
+
+ if (filedlg.ShowModal() == wxID_OK)
{
- // check dimensions
- if (w >= LIFE_MIN && w <= LIFE_MAX &&
- h >= LIFE_MIN && h <= LIFE_MAX)
+ wxFileInputStream stream(filedlg.GetPath());
+ LifeReader reader(stream);
+
+ // the reader handles errors itself, no need to do anything here
+ if (reader.IsOk())
{
- // resize game field
- m_life->Destroy();
- m_life->Create(w, h);
-
- // tell the canvas
- m_canvas->Reset();
- m_canvas->Refresh();
+ // stop if running and put the pattern
+ OnStop();
+ m_life->Clear();
+ m_life->SetPattern(reader.GetPattern());
+
+ // recenter canvas
+ m_canvas->Recenter(0, 0);
m_tics = 0;
UpdateInfoText();
}
- else
- {
- wxString msg;
- msg.Printf(_("Both dimensions must be within %u and %u.\n"),
- LIFE_MIN, LIFE_MAX);
- wxMessageBox(msg, _("Error!"), wxOK | wxICON_EXCLAMATION, this);
- }
}
}
// dialog box
LifeSamplesDialog dialog(this);
- // new game?
if (dialog.ShowModal() == wxID_OK)
{
- int result = dialog.GetValue();
+ const LifePattern pattern = dialog.GetPattern();
- if (result == -1)
- return;
+ // put the pattern
+ m_life->Clear();
+ m_life->SetPattern(pattern);
- int gw = g_shapes[result].m_fieldWidth;
- int gh = g_shapes[result].m_fieldHeight;
- int wrap = g_shapes[result].m_wrap;
+ // recenter canvas
+ m_canvas->Recenter(0, 0);
+ m_tics = 0;
+ UpdateInfoText();
+ }
+}
- // set wraparound (don't ask the user)
- m_life->SetBorderWrap(wrap);
- GetMenuBar()->GetMenu(1)->Check(ID_WRAP, wrap);
+void LifeFrame::OnZoom(wxCommandEvent& event)
+{
+ int cellsize = m_canvas->GetCellSize();
- // need to resize the game field?
- if (gw > m_life->GetWidth() || gh > m_life->GetHeight())
- {
- wxString s;
- s.Printf(_("Your game field is too small for this configuration.\n"
- "It is recommended to resize it to %u x %u. Proceed?\n"),
- gw, gh);
+ if ((event.GetId() == ID_ZOOMIN) && cellsize < 32)
+ {
+ m_canvas->SetCellSize(cellsize * 2);
+ UpdateUI();
+ }
+ else if ((event.GetId() == ID_ZOOMOUT) && cellsize > 1)
+ {
+ m_canvas->SetCellSize(cellsize / 2);
+ UpdateUI();
+ }
+}
- if (wxMessageBox(s, _("Question"), wxYES_NO | wxICON_QUESTION, this) == wxYES)
- {
- m_life->Destroy();
- m_life->Create(gw, gh);
- }
- }
+void LifeFrame::OnNavigate(wxCommandEvent& event)
+{
+ LifeCell c;
- // put the shape
- m_life->SetShape(g_shapes[result]);
+ switch (event.GetId())
+ {
+ case ID_NORTH: c = m_life->FindNorth(); break;
+ case ID_SOUTH: c = m_life->FindSouth(); break;
+ case ID_WEST: c = m_life->FindWest(); break;
+ case ID_EAST: c = m_life->FindEast(); break;
+ case ID_CENTER: c = m_life->FindCenter(); break;
+ case ID_ORIGIN: c.i = c.j = 0; break;
+ }
- // tell the canvas about the change
- m_canvas->Reset();
- m_canvas->Refresh();
- m_tics = 0;
- UpdateInfoText();
+ m_canvas->Recenter(c.i, c.j);
+}
+
+void LifeFrame::OnSlider(wxScrollEvent& event)
+{
+ m_interval = event.GetPosition() * 100;
+
+ if (m_running)
+ {
+ OnStop();
+ OnStart();
}
+
+ UpdateInfoText();
+}
+
+void LifeFrame::OnTimer(wxTimerEvent& WXUNUSED(event))
+{
+ OnStep();
+}
+
+void LifeFrame::OnClose(wxCloseEvent& WXUNUSED(event))
+{
+ // Stop if it was running; this is absolutely needed because
+ // the frame won't be actually destroyed until there are no
+ // more pending events, and this in turn won't ever happen
+ // if the timer is running faster than the window can redraw.
+ OnStop();
+ Destroy();
}
void LifeFrame::OnStart()
{
if (!m_running)
{
- GetToolBar()->EnableTool(ID_START, FALSE);
- GetToolBar()->EnableTool(ID_STOP, TRUE);
- GetMenuBar()->GetMenu(1)->Enable(ID_START, FALSE);
- GetMenuBar()->GetMenu(1)->Enable(ID_STEP, FALSE);
- GetMenuBar()->GetMenu(1)->Enable(ID_STOP, TRUE);
-
m_timer->Start(m_interval);
m_running = TRUE;
+ UpdateUI();
}
}
{
if (m_running)
{
- GetToolBar()->EnableTool(ID_START, TRUE);
- GetToolBar()->EnableTool(ID_STOP, FALSE);
- GetMenuBar()->GetMenu(1)->Enable(ID_START, TRUE);
- GetMenuBar()->GetMenu(1)->Enable(ID_STEP, TRUE);
- GetMenuBar()->GetMenu(1)->Enable(ID_STOP, FALSE);
-
m_timer->Stop();
m_running = FALSE;
+ m_topspeed = FALSE;
+ UpdateUI();
}
}
-void LifeFrame::OnTimer()
+void LifeFrame::OnStep()
{
if (m_life->NextTic())
m_tics++;
else
OnStop();
+ m_canvas->DrawChanged();
UpdateInfoText();
- m_canvas->DrawEverything();
- m_canvas->Refresh(FALSE);
}
-void LifeFrame::OnSlider(wxScrollEvent& event)
+
+// --------------------------------------------------------------------------
+// LifeNavigator miniframe
+// --------------------------------------------------------------------------
+
+LifeNavigator::LifeNavigator(wxWindow *parent)
+ : wxMiniFrame(parent, -1,
+ _("Navigation"),
+ wxDefaultPosition,
+ wxDefaultSize,
+ wxCAPTION | wxSIMPLE_BORDER)
{
- m_interval = event.GetPosition() * 100;
+ wxPanel *panel = new wxPanel(this, -1);
+ wxBoxSizer *sizer1 = new wxBoxSizer(wxVERTICAL);
+ wxBoxSizer *sizer2 = new wxBoxSizer(wxHORIZONTAL);
+
+ // create bitmaps and masks for the buttons
+ wxBitmap
+ bmpn = wxBITMAP(north),
+ bmpw = wxBITMAP(west),
+ bmpc = wxBITMAP(center),
+ bmpe = wxBITMAP(east),
+ bmps = wxBITMAP(south);
+
+#if !defined(__WXGTK__) && !defined(__WXMOTIF__) && !defined(__WXMAC__)
+ bmpn.SetMask(new wxMask(bmpn, *wxLIGHT_GREY));
+ bmpw.SetMask(new wxMask(bmpw, *wxLIGHT_GREY));
+ bmpc.SetMask(new wxMask(bmpc, *wxLIGHT_GREY));
+ bmpe.SetMask(new wxMask(bmpe, *wxLIGHT_GREY));
+ bmps.SetMask(new wxMask(bmps, *wxLIGHT_GREY));
+#endif
- // restart timer if running, to set the new interval
- if (m_running)
- {
- m_timer->Stop();
- m_timer->Start(m_interval);
- }
+ // create the buttons and attach tooltips to them
+ wxBitmapButton
+ *bn = new wxBitmapButton(panel, ID_NORTH, bmpn),
+ *bw = new wxBitmapButton(panel, ID_WEST , bmpw),
+ *bc = new wxBitmapButton(panel, ID_CENTER, bmpc),
+ *be = new wxBitmapButton(panel, ID_EAST , bmpe),
+ *bs = new wxBitmapButton(panel, ID_SOUTH, bmps);
+
+#if wxUSE_TOOLTIPS
+ bn->SetToolTip(_("Find northernmost cell"));
+ bw->SetToolTip(_("Find westernmost cell"));
+ bc->SetToolTip(_("Find center of mass"));
+ be->SetToolTip(_("Find easternmost cell"));
+ bs->SetToolTip(_("Find southernmost cell"));
+#endif
- UpdateInfoText();
-}
+ // add buttons to sizers
+ sizer2->Add( bw, 0, wxCENTRE | wxWEST, 4 );
+ sizer2->Add( bc, 0, wxCENTRE);
+ sizer2->Add( be, 0, wxCENTRE | wxEAST, 4 );
+ sizer1->Add( bn, 0, wxCENTRE | wxNORTH, 4 );
+ sizer1->Add( sizer2 );
+ sizer1->Add( bs, 0, wxCENTRE | wxSOUTH, 4 );
-// --------------------------------------------------------------------------
-// LifeTimer
-// --------------------------------------------------------------------------
+ // set the miniframe size
+ panel->SetSizer(sizer1);
+ panel->SetAutoLayout(TRUE);
+ sizer1->Fit(this);
+ sizer1->SetSizeHints(this);
+
+ // move it to a sensible position
+ wxRect parentRect = parent->GetRect();
+ wxSize childSize = GetSize();
+ int x = parentRect.GetX() +
+ parentRect.GetWidth();
+ int y = parentRect.GetY() +
+ (parentRect.GetHeight() - childSize.GetHeight()) / 4;
+ Move(x, y);
+
+ // done
+ Show(TRUE);
+}
-void LifeTimer::Notify()
+void LifeNavigator::OnClose(wxCloseEvent& event)
{
- GET_FRAME()->OnTimer();
-};
+ // avoid if we can
+ if (event.CanVeto())
+ event.Veto();
+ else
+ Destroy();
+}
+
// --------------------------------------------------------------------------
// LifeCanvas
// canvas constructor
LifeCanvas::LifeCanvas(wxWindow *parent, Life *life, bool interactive)
- : wxScrolledWindow(parent, -1, wxPoint(0, 0), wxSize(100, 100))
+ : wxWindow(parent, -1, wxPoint(0, 0), wxSize(100, 100),
+ wxSUNKEN_BORDER)
{
m_life = life;
m_interactive = interactive;
m_cellsize = 8;
- m_bmp = NULL;
- Reset();
+ m_status = MOUSE_NOACTION;
+ m_viewportX = 0;
+ m_viewportY = 0;
+ m_viewportH = 0;
+ m_viewportW = 0;
+
+ if (m_interactive)
+ SetCursor(*wxCROSS_CURSOR);
+
+ // reduce flicker if wxEVT_ERASE_BACKGROUND is not available
+ SetBackgroundColour(*wxWHITE);
}
LifeCanvas::~LifeCanvas()
{
- delete m_bmp;
+ delete m_life;
}
-void LifeCanvas::Reset()
+// recenter at the given position
+void LifeCanvas::Recenter(wxInt32 i, wxInt32 j)
{
- if (m_bmp)
- delete m_bmp;
-
- m_status = MOUSE_NOACTION;
- m_width = CellToCoord(m_life->GetWidth()) + 1;
- m_height = CellToCoord(m_life->GetHeight()) + 1;
- m_bmp = new wxBitmap(m_width, m_height);
- wxCoord w = GetClientSize().GetX();
- wxCoord h = GetClientSize().GetY();
- m_xoffset = (w > m_width)? ((w - m_width) / 2) : 0;
- m_yoffset = (h > m_height)? ((h - m_height) / 2) : 0;
+ m_viewportX = i - m_viewportW / 2;
+ m_viewportY = j - m_viewportH / 2;
// redraw everything
- DrawEverything(TRUE);
- SetScrollbars(10, 10, (m_width + 9) / 10, (m_height + 9) / 10);
+ Refresh(FALSE);
}
-void LifeCanvas::DrawEverything(bool force)
+// set the cell size and refresh display
+void LifeCanvas::SetCellSize(int cellsize)
{
- wxMemoryDC dc;
-
- dc.SelectObject(*m_bmp);
- dc.BeginDrawing();
-
- // draw cells
- const CellArray *cells =
- force? m_life->GetCells() : m_life->GetChangedCells();
+ m_cellsize = cellsize;
+
+ // find current center
+ wxInt32 cx = m_viewportX + m_viewportW / 2;
+ wxInt32 cy = m_viewportY + m_viewportH / 2;
+
+ // get current canvas size and adjust viewport accordingly
+ int w, h;
+ GetClientSize(&w, &h);
+ m_viewportW = (w + m_cellsize - 1) / m_cellsize;
+ m_viewportH = (h + m_cellsize - 1) / m_cellsize;
+
+ // recenter
+ m_viewportX = cx - m_viewportW / 2;
+ m_viewportY = cy - m_viewportH / 2;
+
+ // adjust scrollbars
+ if (m_interactive)
+ {
+ SetScrollbar(wxHORIZONTAL, m_viewportW, m_viewportW, 3 * m_viewportW);
+ SetScrollbar(wxVERTICAL, m_viewportH, m_viewportH, 3 * m_viewportH);
+ m_thumbX = m_viewportW;
+ m_thumbY = m_viewportH;
+ }
+
+ Refresh(FALSE);
+}
- for (unsigned i = 0; i < cells->GetCount(); i++)
- DrawCell(cells->Item(i), dc);
+// draw a cell
+void LifeCanvas::DrawCell(wxInt32 i, wxInt32 j, bool alive)
+{
+ wxClientDC dc(this);
- // bounding rectangle (always drawn - better than clipping region)
- dc.SetPen(*wxBLACK_PEN);
- dc.SetBrush(*wxTRANSPARENT_BRUSH);
- dc.DrawRectangle(0, 0, m_width, m_height);
+ dc.SetPen(alive? *wxBLACK_PEN : *wxWHITE_PEN);
+ dc.SetBrush(alive? *wxBLACK_BRUSH : *wxWHITE_BRUSH);
+ dc.BeginDrawing();
+ DrawCell(i, j, dc);
dc.EndDrawing();
- dc.SelectObject(wxNullBitmap);
}
-void LifeCanvas::DrawCell(Cell c)
+void LifeCanvas::DrawCell(wxInt32 i, wxInt32 j, wxDC &dc)
{
- wxMemoryDC dc;
+ wxCoord x = CellToX(i);
+ wxCoord y = CellToY(j);
- dc.SelectObject(*m_bmp);
- dc.BeginDrawing();
-
- dc.SetClippingRegion(1, 1, m_width - 2, m_height - 2);
- DrawCell(c, dc);
-
- dc.EndDrawing();
- dc.SelectObject(wxNullBitmap);
+ // if cellsize is 1 or 2, there will be no grid
+ switch (m_cellsize)
+ {
+ case 1:
+ dc.DrawPoint(x, y);
+ break;
+ case 2:
+ dc.DrawRectangle(x, y, 2, 2);
+ break;
+ default:
+ dc.DrawRectangle(x + 1, y + 1, m_cellsize - 1, m_cellsize - 1);
+ }
}
-void LifeCanvas::DrawCell(Cell c, wxDC &dc)
+// draw all changed cells
+void LifeCanvas::DrawChanged()
{
- if (m_life->IsAlive(c))
+ wxClientDC dc(this);
+
+ size_t ncells;
+ LifeCell *cells;
+ bool done = FALSE;
+
+ m_life->BeginFind(m_viewportX,
+ m_viewportY,
+ m_viewportX + m_viewportW,
+ m_viewportY + m_viewportH,
+ TRUE);
+
+ dc.BeginDrawing();
+
+ if (m_cellsize == 1)
{
dc.SetPen(*wxBLACK_PEN);
- dc.SetBrush(*wxBLACK_BRUSH);
- dc.DrawRectangle(CellToCoord( m_life->GetX(c) ),
- CellToCoord( m_life->GetY(c) ),
- m_cellsize,
- m_cellsize);
}
else
{
- dc.SetPen(*wxLIGHT_GREY_PEN);
- dc.SetBrush(*wxTRANSPARENT_BRUSH);
- dc.DrawRectangle(CellToCoord( m_life->GetX(c) ),
- CellToCoord( m_life->GetY(c) ),
- m_cellsize,
- m_cellsize);
- dc.SetPen(*wxWHITE_PEN);
- dc.SetBrush(*wxWHITE_BRUSH);
- dc.DrawRectangle(CellToCoord( m_life->GetX(c) ) + 1,
- CellToCoord( m_life->GetY(c) ) + 1,
- m_cellsize - 1,
- m_cellsize - 1);
+ dc.SetPen(*wxTRANSPARENT_PEN);
+ dc.SetBrush(*wxBLACK_BRUSH);
+ }
+ dc.SetLogicalFunction(wxINVERT);
+
+ while (!done)
+ {
+ done = m_life->FindMore(&cells, &ncells);
+
+ for (size_t m = 0; m < ncells; m++)
+ DrawCell(cells[m].i, cells[m].j, dc);
}
+ dc.EndDrawing();
}
// event handlers
void LifeCanvas::OnPaint(wxPaintEvent& event)
{
wxPaintDC dc(this);
- wxMemoryDC memdc;
+ wxRect rect = GetUpdateRegion().GetBox();
+ wxCoord x, y, w, h;
+ wxInt32 i0, j0, i1, j1;
+
+ // find damaged area
+ x = rect.GetX();
+ y = rect.GetY();
+ w = rect.GetWidth();
+ h = rect.GetHeight();
+
+ i0 = XToCell(x);
+ j0 = YToCell(y);
+ i1 = XToCell(x + w - 1);
+ j1 = YToCell(y + h - 1);
- wxRegionIterator upd(GetUpdateRegion());
- wxCoord x, y, w, h, xx, yy;
+ size_t ncells;
+ LifeCell *cells;
+ bool done = FALSE;
+ m_life->BeginFind(i0, j0, i1, j1, FALSE);
+ done = m_life->FindMore(&cells, &ncells);
+
+ // erase all damaged cells and draw the grid
dc.BeginDrawing();
- memdc.SelectObject(*m_bmp);
+ dc.SetBrush(*wxWHITE_BRUSH);
+
+ if (m_cellsize <= 2)
+ {
+ // no grid
+ dc.SetPen(*wxWHITE_PEN);
+ dc.DrawRectangle(x, y, w, h);
+ }
+ else
+ {
+ x = CellToX(i0);
+ y = CellToY(j0);
+ w = CellToX(i1 + 1) - x + 1;
+ h = CellToY(j1 + 1) - y + 1;
+
+ dc.SetPen(*wxLIGHT_GREY_PEN);
+ for (wxInt32 yy = y; yy <= (y + h - m_cellsize); yy += m_cellsize)
+ dc.DrawRectangle(x, yy, w, m_cellsize + 1);
+ for (wxInt32 xx = x; xx <= (x + w - m_cellsize); xx += m_cellsize)
+ dc.DrawLine(xx, y, xx, y + h);
+ }
+
+ // draw all alive cells
+ dc.SetPen(*wxBLACK_PEN);
+ dc.SetBrush(*wxBLACK_BRUSH);
- while(upd)
+ while (!done)
{
- x = upd.GetX();
- y = upd.GetY();
- w = upd.GetW();
- h = upd.GetH();
- CalcUnscrolledPosition(x, y, &xx, &yy);
+ for (size_t m = 0; m < ncells; m++)
+ DrawCell(cells[m].i, cells[m].j, dc);
- dc.Blit(x, y, w, h, &memdc, xx - m_xoffset, yy - m_yoffset);
- upd++;
+ done = m_life->FindMore(&cells, &ncells);
}
- memdc.SelectObject(wxNullBitmap);
+ // last set
+ for (size_t m = 0; m < ncells; m++)
+ DrawCell(cells[m].i, cells[m].j, dc);
+
dc.EndDrawing();
}
if (!m_interactive)
return;
- int x, y, xx, yy, i, j;
-
// which cell are we pointing at?
- x = event.GetX();
- y = event.GetY();
- CalcUnscrolledPosition(x, y, &xx, &yy);
- i = CoordToCell( xx - m_xoffset );
- j = CoordToCell( yy - m_yoffset );
+ wxInt32 i = XToCell( event.GetX() );
+ wxInt32 j = YToCell( event.GetY() );
- // adjust x, y to point to the upper left corner of the cell
- CalcScrolledPosition( CellToCoord(i) + m_xoffset,
- CellToCoord(j) + m_yoffset,
- &x, &y );
+ // set statusbar text
+ wxString msg;
+ msg.Printf(_("Cell: (%d, %d)"), i, j);
+ ((LifeFrame *) wxGetApp().GetTopWindow())->SetStatusText(msg, 1);
- // set cursor shape and statusbar text
- if (i < 0 || i >= m_life->GetWidth() ||
- j < 0 || j >= m_life->GetHeight())
- {
- GET_FRAME()->SetStatusText(wxEmptyString, 1);
- SetCursor(*wxSTANDARD_CURSOR);
- }
- else
- {
- wxString msg;
- msg.Printf(_("Cell: (%u, %u)"), i, j);
- GET_FRAME()->SetStatusText(msg, 1);
- SetCursor(*wxCROSS_CURSOR);
- }
+ // NOTE that wxMouseEvent::LeftDown() and wxMouseEvent::LeftIsDown()
+ // have different semantics. The first one is used to signal that the
+ // button was just pressed (i.e., in "button down" events); the second
+ // one just describes the current status of the button, independently
+ // of the mouse event type. LeftIsDown is typically used in "mouse
+ // move" events, to test if the button is _still_ pressed.
- // button pressed?
+ // is the button down?
if (!event.LeftIsDown())
{
m_status = MOUSE_NOACTION;
+ return;
}
- else if (i >= 0 && i < m_life->GetWidth() &&
- j >= 0 && j < m_life->GetHeight())
- {
- bool alive = m_life->IsAlive(i, j);
- // if just pressed, update status
- if (m_status == MOUSE_NOACTION)
- m_status = (alive? MOUSE_ERASING : MOUSE_DRAWING);
-
- // toggle cell and refresh if needed
- if (((m_status == MOUSE_ERASING) && alive) ||
- ((m_status == MOUSE_DRAWING) && !alive))
+ // was it pressed just now?
+ if (event.LeftDown())
+ {
+ // yes: start a new action and toggle this cell
+ m_status = (m_life->IsAlive(i, j)? MOUSE_ERASING : MOUSE_DRAWING);
+
+ m_mi = i;
+ m_mj = j;
+ m_life->SetCell(i, j, m_status == MOUSE_DRAWING);
+ DrawCell(i, j, m_status == MOUSE_DRAWING);
+ }
+ else if ((m_mi != i) || (m_mj != j))
+ {
+ // no: continue ongoing action
+ bool alive = (m_status == MOUSE_DRAWING);
+
+ // prepare DC and pen + brush to optimize drawing
+ wxClientDC dc(this);
+ dc.SetPen(alive? *wxBLACK_PEN : *wxWHITE_PEN);
+ dc.SetBrush(alive? *wxBLACK_BRUSH : *wxWHITE_BRUSH);
+ dc.BeginDrawing();
+
+ // draw a line of cells using Bresenham's algorithm
+ wxInt32 d, ii, jj, di, ai, si, dj, aj, sj;
+ di = i - m_mi;
+ ai = abs(di) << 1;
+ si = (di < 0)? -1 : 1;
+ dj = j - m_mj;
+ aj = abs(dj) << 1;
+ sj = (dj < 0)? -1 : 1;
+
+ ii = m_mi;
+ jj = m_mj;
+
+ if (ai > aj)
{
- wxRect rect(x, y, m_cellsize + 1, m_cellsize + 1);
- DrawCell( m_life->SetCell(i, j, !alive) );
- Refresh(FALSE, &rect);
+ // iterate over i
+ d = aj - (ai >> 1);
+
+ while (ii != i)
+ {
+ m_life->SetCell(ii, jj, alive);
+ DrawCell(ii, jj, dc);
+ if (d >= 0)
+ {
+ jj += sj;
+ d -= ai;
+ }
+ ii += si;
+ d += aj;
+ }
}
+ else
+ {
+ // iterate over j
+ d = ai - (aj >> 1);
+
+ while (jj != j)
+ {
+ m_life->SetCell(ii, jj, alive);
+ DrawCell(ii, jj, dc);
+ if (d >= 0)
+ {
+ ii += si;
+ d -= aj;
+ }
+ jj += sj;
+ d += ai;
+ }
+ }
+
+ // last cell
+ m_life->SetCell(ii, jj, alive);
+ DrawCell(ii, jj, dc);
+ m_mi = ii;
+ m_mj = jj;
+
+ dc.EndDrawing();
}
+
+ ((LifeFrame *) wxGetApp().GetTopWindow())->UpdateInfoText();
}
void LifeCanvas::OnSize(wxSizeEvent& event)
{
+ // find center
+ wxInt32 cx = m_viewportX + m_viewportW / 2;
+ wxInt32 cy = m_viewportY + m_viewportH / 2;
+
+ // get new size
wxCoord w = event.GetSize().GetX();
wxCoord h = event.GetSize().GetY();
- m_xoffset = (w > m_width)? ((w - m_width) / 2) : 0;
- m_yoffset = (h > m_height)? ((h - m_height) / 2) : 0;
+ m_viewportW = (w + m_cellsize - 1) / m_cellsize;
+ m_viewportH = (h + m_cellsize - 1) / m_cellsize;
+
+ // recenter
+ m_viewportX = cx - m_viewportW / 2;
+ m_viewportY = cy - m_viewportH / 2;
+
+ // scrollbars
+ if (m_interactive)
+ {
+ SetScrollbar(wxHORIZONTAL, m_viewportW, m_viewportW, 3 * m_viewportW);
+ SetScrollbar(wxVERTICAL, m_viewportH, m_viewportH, 3 * m_viewportH);
+ m_thumbX = m_viewportW;
+ m_thumbY = m_viewportH;
+ }
// allow default processing
event.Skip();
}
+
+void LifeCanvas::OnScroll(wxScrollWinEvent& event)
+{
+ WXTYPE type = event.GetEventType();
+ int pos = event.GetPosition();
+ int orient = event.GetOrientation();
+
+ // calculate scroll increment
+ int scrollinc = 0;
+ if (type == wxEVT_SCROLLWIN_TOP)
+ {
+ if (orient == wxHORIZONTAL)
+ scrollinc = -m_viewportW;
+ else
+ scrollinc = -m_viewportH;
+ }
+ else
+ if (type == wxEVT_SCROLLWIN_BOTTOM)
+ {
+ if (orient == wxHORIZONTAL)
+ scrollinc = m_viewportW;
+ else
+ scrollinc = m_viewportH;
+ }
+ else
+ if (type == wxEVT_SCROLLWIN_LINEUP)
+ {
+ scrollinc = -1;
+ }
+ else
+ if (type == wxEVT_SCROLLWIN_LINEDOWN)
+ {
+ scrollinc = +1;
+ }
+ else
+ if (type == wxEVT_SCROLLWIN_PAGEUP)
+ {
+ scrollinc = -10;
+ }
+ else
+ if (type == wxEVT_SCROLLWIN_PAGEDOWN)
+ {
+ scrollinc = -10;
+ }
+ else
+ if (type == wxEVT_SCROLLWIN_THUMBTRACK)
+ {
+ if (orient == wxHORIZONTAL)
+ {
+ scrollinc = pos - m_thumbX;
+ m_thumbX = pos;
+ }
+ else
+ {
+ scrollinc = pos - m_thumbY;
+ m_thumbY = pos;
+ }
+ }
+ else
+ if (type == wxEVT_SCROLLWIN_THUMBRELEASE)
+ {
+ m_thumbX = m_viewportW;
+ m_thumbY = m_viewportH;
+ }
+
+#if defined(__WXGTK__) || defined(__WXMOTIF__)
+ // wxGTK and wxMotif update the thumb automatically (wxMSW doesn't);
+ // so reset it back as we always want it to be in the same position.
+ if (type != wxEVT_SCROLLWIN_THUMBTRACK)
+ {
+ SetScrollbar(wxHORIZONTAL, m_viewportW, m_viewportW, 3 * m_viewportW);
+ SetScrollbar(wxVERTICAL, m_viewportH, m_viewportH, 3 * m_viewportH);
+ }
+#endif
+
+ if (scrollinc == 0) return;
+
+ // scroll the window and adjust the viewport
+ if (orient == wxHORIZONTAL)
+ {
+ m_viewportX += scrollinc;
+ ScrollWindow( -m_cellsize * scrollinc, 0, (const wxRect *) NULL);
+ }
+ else
+ {
+ m_viewportY += scrollinc;
+ ScrollWindow( 0, -m_cellsize * scrollinc, (const wxRect *) NULL);
+ }
+}
+
+void LifeCanvas::OnEraseBackground(wxEraseEvent& WXUNUSED(event))
+{
+ // do nothing. I just don't want the background to be erased, you know.
+}
+
+
projects / wxWidgets.git / blobdiff