samples/mdi/mdi.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        mdi.cpp
   3 // Purpose:     MDI sample
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ===========================================================================
  13 // declarations
  14 // ===========================================================================
  15
  16 // ---------------------------------------------------------------------------
  17 // headers
  18 // ---------------------------------------------------------------------------
  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     #include "wx/mdi.h"
  30 #endif
  31
  32 #include "wx/toolbar.h"
  33
  34 #if !defined(__WXMSW__)
  35     #include "../sample.xpm"
  36     #include "chart.xpm"
  37 #endif
  38
  39 #include "bitmaps/new.xpm"
  40 #include "bitmaps/open.xpm"
  41 #include "bitmaps/save.xpm"
  42 #include "bitmaps/copy.xpm"
  43 #include "bitmaps/cut.xpm"
  44 #include "bitmaps/paste.xpm"
  45 #include "bitmaps/print.xpm"
  46 #include "bitmaps/help.xpm"
  47
  48
  49 #include "mdi.h"
  50
  51 IMPLEMENT_APP(MyApp)
  52
  53 // ---------------------------------------------------------------------------
  54 // global variables
  55 // ---------------------------------------------------------------------------
  56
  57 MyFrame *frame = (MyFrame *) NULL;
  58 wxList my_children;
  59
  60 // For drawing lines in a canvas
  61 static long xpos = -1;
  62 static long ypos = -1;
  63
  64 static int gs_nFrames = 0;
  65
  66 // ---------------------------------------------------------------------------
  67 // event tables
  68 // ---------------------------------------------------------------------------
  69
  70 BEGIN_EVENT_TABLE(MyFrame, wxMDIParentFrame)
  71     EVT_MENU(MDI_ABOUT, MyFrame::OnAbout)
  72     EVT_MENU(MDI_NEW_WINDOW, MyFrame::OnNewWindow)
  73     EVT_MENU(MDI_QUIT, MyFrame::OnQuit)
  74
  75     EVT_CLOSE(MyFrame::OnClose)
  76     EVT_SIZE(MyFrame::OnSize)
  77 END_EVENT_TABLE()
  78
  79 // Note that MDI_NEW_WINDOW and MDI_ABOUT commands get passed
  80 // to the parent window for processing, so no need to
  81 // duplicate event handlers here.
  82 BEGIN_EVENT_TABLE(MyChild, wxMDIChildFrame)
  83     EVT_MENU(MDI_CHILD_QUIT, MyChild::OnQuit)
  84     EVT_MENU(MDI_REFRESH, MyChild::OnRefresh)
  85     EVT_MENU(MDI_CHANGE_TITLE, MyChild::OnChangeTitle)
  86     EVT_MENU(MDI_CHANGE_POSITION, MyChild::OnChangePosition)
  87     EVT_MENU(MDI_CHANGE_SIZE, MyChild::OnChangeSize)
  88
  89 #if wxUSE_CLIPBOARD
  90     EVT_MENU(wxID_PASTE, MyChild::OnPaste)
  91     EVT_UPDATE_UI(wxID_PASTE, MyChild::OnUpdatePaste)
  92 #endif // wxUSE_CLIPBOARD
  93
  94     EVT_SIZE(MyChild::OnSize)
  95     EVT_MOVE(MyChild::OnMove)
  96
  97     EVT_CLOSE(MyChild::OnClose)
  98 END_EVENT_TABLE()
  99
 100 BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
 101     EVT_MOUSE_EVENTS(MyCanvas::OnEvent)
 102 END_EVENT_TABLE()
 103
 104 // ===========================================================================
 105 // implementation
 106 // ===========================================================================
 107
 108 // ---------------------------------------------------------------------------
 109 // MyApp
 110 // ---------------------------------------------------------------------------
 111
 112 // Initialise this in OnInit, not statically
 113 bool MyApp::OnInit()
 114 {
 115     if ( !wxApp::OnInit() )
 116         return false;
 117
 118     // Create the main frame window
 119
 120     frame = new MyFrame((wxFrame *)NULL, wxID_ANY, _T("MDI Demo"),
 121                         wxDefaultPosition, wxSize(500, 400),
 122                         wxDEFAULT_FRAME_STYLE | wxHSCROLL | wxVSCROLL);
 123 #if 0
 124     // Experimental: change the window menu
 125     wxMenu* windowMenu = new wxMenu;
 126     windowMenu->Append(5000, _T("My menu item!"));
 127     frame->SetWindowMenu(windowMenu);
 128 #endif
 129
 130     // Give it an icon
 131     frame->SetIcon(wxICON(sample));
 132
 133     // Make a menubar
 134     wxMenu *file_menu = new wxMenu;
 135
 136     file_menu->Append(MDI_NEW_WINDOW, _T("&New window\tCtrl-N"), _T("Create a new child window"));
 137     file_menu->Append(MDI_QUIT, _T("&Exit\tAlt-X"), _T("Quit the program"));
 138
 139     wxMenu *help_menu = new wxMenu;
 140     help_menu->Append(MDI_ABOUT, _T("&About\tF1"));
 141
 142     wxMenuBar *menu_bar = new wxMenuBar;
 143
 144     menu_bar->Append(file_menu, _T("&File"));
 145     menu_bar->Append(help_menu, _T("&Help"));
 146
 147     // Associate the menu bar with the frame
 148     frame->SetMenuBar(menu_bar);
 149
 150 #if wxUSE_STATUSBAR
 151     frame->CreateStatusBar();
 152 #endif // wxUSE_STATUSBAR
 153
 154     frame->Show(true);
 155
 156     SetTopWindow(frame);
 157
 158     return true;
 159 }
 160
 161 // ---------------------------------------------------------------------------
 162 // MyFrame
 163 // ---------------------------------------------------------------------------
 164
 165 // Define my frame constructor
 166 MyFrame::MyFrame(wxWindow *parent,
 167                  const wxWindowID id,
 168                  const wxString& title,
 169                  const wxPoint& pos,
 170                  const wxSize& size,
 171                  const long style)
 172        : wxMDIParentFrame(parent, id, title, pos, size, style)
 173 {
 174     textWindow = new wxTextCtrl(this, wxID_ANY, _T("A help window"),
 175                                 wxDefaultPosition, wxDefaultSize,
 176                                 wxTE_MULTILINE | wxSUNKEN_BORDER);
 177
 178 #if wxUSE_TOOLBAR
 179     CreateToolBar(wxNO_BORDER | wxTB_FLAT | wxTB_HORIZONTAL);
 180     InitToolBar(GetToolBar());
 181 #endif // wxUSE_TOOLBAR
 182
 183 #if wxUSE_ACCEL
 184     // Accelerators
 185     wxAcceleratorEntry entries[3];
 186     entries[0].Set(wxACCEL_CTRL, (int) 'N', MDI_NEW_WINDOW);
 187     entries[1].Set(wxACCEL_CTRL, (int) 'X', MDI_QUIT);
 188     entries[2].Set(wxACCEL_CTRL, (int) 'A', MDI_ABOUT);
 189     wxAcceleratorTable accel(3, entries);
 190     SetAcceleratorTable(accel);
 191 #endif // wxUSE_ACCEL
 192 }
 193
 194 void MyFrame::OnClose(wxCloseEvent& event)
 195 {
 196     if ( event.CanVeto() && (gs_nFrames > 0) )
 197     {
 198         wxString msg;
 199         msg.Printf(_T("%d windows still open, close anyhow?"), gs_nFrames);
 200         if ( wxMessageBox(msg, _T("Please confirm"),
 201                           wxICON_QUESTION | wxYES_NO) != wxYES )
 202         {
 203             event.Veto();
 204
 205             return;
 206         }
 207     }
 208
 209     event.Skip();
 210 }
 211
 212 void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 213 {
 214     Close();
 215 }
 216
 217 void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event) )
 218 {
 219     (void)wxMessageBox(_T("wxWidgets 2.0 MDI Demo\n")
 220                        _T("Author: Julian Smart (c) 1997\n")
 221                        _T("Usage: mdi.exe"), _T("About MDI Demo"));
 222 }
 223
 224 void MyFrame::OnNewWindow(wxCommandEvent& WXUNUSED(event) )
 225 {
 226     // Make another frame, containing a canvas
 227     MyChild *subframe = new MyChild(frame, _T("Canvas Frame"));
 228
 229     wxString title;
 230     title.Printf(_T("Canvas Frame %d"), ++gs_nFrames);
 231
 232     subframe->SetTitle(title);
 233
 234     // Give it an icon
 235     subframe->SetIcon(wxICON(chart));
 236
 237 #if wxUSE_MENUS
 238     // Make a menubar
 239     wxMenu *file_menu = new wxMenu;
 240
 241     file_menu->Append(MDI_NEW_WINDOW, _T("&New window"));
 242     file_menu->Append(MDI_CHILD_QUIT, _T("&Close child"), _T("Close this window"));
 243     file_menu->Append(MDI_QUIT, _T("&Exit"));
 244
 245     wxMenu *option_menu = new wxMenu;
 246
 247     option_menu->Append(MDI_REFRESH, _T("&Refresh picture"));
 248     option_menu->Append(MDI_CHANGE_TITLE, _T("Change &title...\tCtrl-T"));
 249     option_menu->AppendSeparator();
 250     option_menu->Append(MDI_CHANGE_POSITION, _T("Move frame\tCtrl-M"));
 251     option_menu->Append(MDI_CHANGE_SIZE, _T("Resize frame\tCtrl-S"));
 252 #if wxUSE_CLIPBOARD
 253     option_menu->AppendSeparator();
 254     option_menu->Append(wxID_PASTE, _T("Copy text from clipboard\tCtrl-V"));
 255 #endif // wxUSE_CLIPBOARD
 256
 257     wxMenu *help_menu = new wxMenu;
 258     help_menu->Append(MDI_ABOUT, _T("&About"));
 259
 260     wxMenuBar *menu_bar = new wxMenuBar;
 261
 262     menu_bar->Append(file_menu, _T("&File"));
 263     menu_bar->Append(option_menu, _T("&Child"));
 264     menu_bar->Append(help_menu, _T("&Help"));
 265
 266     // Associate the menu bar with the frame
 267     subframe->SetMenuBar(menu_bar);
 268 #endif // wxUSE_MENUS
 269
 270     int width, height;
 271     subframe->GetClientSize(&width, &height);
 272     MyCanvas *canvas = new MyCanvas(subframe, wxPoint(0, 0), wxSize(width, height));
 273     canvas->SetCursor(wxCursor(wxCURSOR_PENCIL));
 274     subframe->canvas = canvas;
 275
 276     // Give it scrollbars
 277     canvas->SetScrollbars(20, 20, 50, 50);
 278
 279     subframe->Show(true);
 280 }
 281
 282 void MyFrame::OnSize(wxSizeEvent&
 283                                   #ifdef __WXUNIVERSAL__
 284                                   event
 285                                   #else
 286                                   WXUNUSED(event)
 287                                   #endif
 288                                   )
 289 {
 290     int w, h;
 291     GetClientSize(&w, &h);
 292
 293     textWindow->SetSize(0, 0, 200, h);
 294     GetClientWindow()->SetSize(200, 0, w - 200, h);
 295
 296     // FIXME: On wxX11, we need the MDI frame to process this
 297     // event, but on other platforms this should not
 298     // be done.
 299 #ifdef __WXUNIVERSAL__
 300     event.Skip();
 301 #endif
 302 }
 303
 304 #if wxUSE_TOOLBAR
 305 void MyFrame::InitToolBar(wxToolBar* toolBar)
 306 {
 307     wxBitmap bitmaps[8];
 308
 309     bitmaps[0] = wxBitmap( new_xpm );
 310     bitmaps[1] = wxBitmap( open_xpm );
 311     bitmaps[2] = wxBitmap( save_xpm );
 312     bitmaps[3] = wxBitmap( copy_xpm );
 313     bitmaps[4] = wxBitmap( cut_xpm );
 314     bitmaps[5] = wxBitmap( paste_xpm );
 315     bitmaps[6] = wxBitmap( print_xpm );
 316     bitmaps[7] = wxBitmap( help_xpm );
 317
 318     toolBar->AddTool(MDI_NEW_WINDOW, _T("New"), bitmaps[0], _T("New file"));
 319     toolBar->AddTool(1, _T("Open"), bitmaps[1], _T("Open file"));
 320     toolBar->AddTool(2, _T("Save"), bitmaps[2], _T("Save file"));
 321     toolBar->AddSeparator();
 322     toolBar->AddTool(3, _T("Copy"), bitmaps[3], _T("Copy"));
 323     toolBar->AddTool(4, _T("Cut"), bitmaps[4], _T("Cut"));
 324     toolBar->AddTool(5, _T("Paste"), bitmaps[5], _T("Paste"));
 325     toolBar->AddSeparator();
 326     toolBar->AddTool(6, _T("Print"), bitmaps[6], _T("Print"));
 327     toolBar->AddSeparator();
 328     toolBar->AddTool(MDI_ABOUT, _T("About"), bitmaps[7], _T("Help"));
 329
 330     toolBar->Realize();
 331 }
 332 #endif // wxUSE_TOOLBAR
 333
 334 // ---------------------------------------------------------------------------
 335 // MyCanvas
 336 // ---------------------------------------------------------------------------
 337
 338 // Define a constructor for my canvas
 339 MyCanvas::MyCanvas(wxWindow *parent, const wxPoint& pos, const wxSize& size)
 340         : wxScrolledWindow(parent, wxID_ANY, pos, size,
 341                            wxSUNKEN_BORDER |
 342                            wxNO_FULL_REPAINT_ON_RESIZE |
 343                            wxVSCROLL | wxHSCROLL)
 344 {
 345     SetBackgroundColour(wxColour(_T("WHITE")));
 346
 347     m_dirty = false;
 348 }
 349
 350 // Define the repainting behaviour
 351 void MyCanvas::OnDraw(wxDC& dc)
 352 {
 353     if ( !m_text.empty() )
 354         dc.DrawText(m_text, 10, 10);
 355
 356     dc.SetFont(*wxSWISS_FONT);
 357     dc.SetPen(*wxGREEN_PEN);
 358     dc.DrawLine(0, 0, 200, 200);
 359     dc.DrawLine(200, 0, 0, 200);
 360
 361     dc.SetBrush(*wxCYAN_BRUSH);
 362     dc.SetPen(*wxRED_PEN);
 363     dc.DrawRectangle(100, 100, 100, 50);
 364     dc.DrawRoundedRectangle(150, 150, 100, 50, 20);
 365
 366     dc.DrawEllipse(250, 250, 100, 50);
 367 #if wxUSE_SPLINES
 368     dc.DrawSpline(50, 200, 50, 100, 200, 10);
 369 #endif // wxUSE_SPLINES
 370     dc.DrawLine(50, 230, 200, 230);
 371     dc.DrawText(_T("This is a test string"), 50, 230);
 372
 373     wxPoint points[3];
 374     points[0].x = 200; points[0].y = 300;
 375     points[1].x = 100; points[1].y = 400;
 376     points[2].x = 300; points[2].y = 400;
 377
 378     dc.DrawPolygon(3, points);
 379 }
 380
 381 // This implements a tiny doodling program! Drag the mouse using the left
 382 // button.
 383 void MyCanvas::OnEvent(wxMouseEvent& event)
 384 {
 385     wxClientDC dc(this);
 386     PrepareDC(dc);
 387
 388     wxPoint pt(event.GetLogicalPosition(dc));
 389
 390     if (xpos > -1 && ypos > -1 && event.Dragging())
 391     {
 392         dc.SetPen(*wxBLACK_PEN);
 393         dc.DrawLine(xpos, ypos, pt.x, pt.y);
 394
 395         m_dirty = true;
 396     }
 397
 398     xpos = pt.x;
 399     ypos = pt.y;
 400 }
 401
 402 // ---------------------------------------------------------------------------
 403 // MyChild
 404 // ---------------------------------------------------------------------------
 405
 406 MyChild::MyChild(wxMDIParentFrame *parent, const wxString& title)
 407        : wxMDIChildFrame(parent, wxID_ANY, title, wxDefaultPosition, wxDefaultSize,
 408                          wxDEFAULT_FRAME_STYLE | wxNO_FULL_REPAINT_ON_RESIZE)
 409 {
 410     canvas = (MyCanvas *) NULL;
 411     my_children.Append(this);
 412
 413     // this should work for MDI frames as well as for normal ones
 414     SetSizeHints(100, 100);
 415 }
 416
 417 MyChild::~MyChild()
 418 {
 419     my_children.DeleteObject(this);
 420 }
 421
 422 void MyChild::OnQuit(wxCommandEvent& WXUNUSED(event))
 423 {
 424     Close(true);
 425 }
 426
 427 void MyChild::OnRefresh(wxCommandEvent& WXUNUSED(event))
 428 {
 429     if ( canvas )
 430         canvas->Refresh();
 431 }
 432
 433 void MyChild::OnChangePosition(wxCommandEvent& WXUNUSED(event))
 434 {
 435     Move(10, 10);
 436 }
 437
 438 void MyChild::OnChangeSize(wxCommandEvent& WXUNUSED(event))
 439 {
 440     SetClientSize(100, 100);
 441 }
 442
 443 void MyChild::OnChangeTitle(wxCommandEvent& WXUNUSED(event))
 444 {
 445 #if wxUSE_TEXTDLG
 446     static wxString s_title = _T("Canvas Frame");
 447
 448     wxString title = wxGetTextFromUser(_T("Enter the new title for MDI child"),
 449                                        _T("MDI sample question"),
 450                                        s_title,
 451                                        GetParent()->GetParent());
 452     if ( !title )
 453         return;
 454
 455     s_title = title;
 456     SetTitle(s_title);
 457 #endif // wxUSE_TEXTDLG
 458 }
 459
 460 void MyChild::OnActivate(wxActivateEvent& event)
 461 {
 462     if ( event.GetActive() && canvas )
 463         canvas->SetFocus();
 464 }
 465
 466 void MyChild::OnMove(wxMoveEvent& event)
 467 {
 468     // VZ: here everything is totally wrong under MSW, the positions are
 469     //     different and both wrong (pos2 is off by 2 pixels for me which seems
 470     //     to be the width of the MDI canvas border)
 471     wxPoint pos1 = event.GetPosition(),
 472             pos2 = GetPosition();
 473     wxLogStatus(wxT("position from event: (%d, %d), from frame (%d, %d)"),
 474                 pos1.x, pos1.y, pos2.x, pos2.y);
 475
 476     event.Skip();
 477 }
 478
 479 void MyChild::OnSize(wxSizeEvent& event)
 480 {
 481     // VZ: under MSW the size event carries the client size (quite
 482     //     unexpectedly) *except* for the very first one which has the full
 483     //     size... what should it really be? TODO: check under wxGTK
 484     wxSize size1 = event.GetSize(),
 485            size2 = GetSize(),
 486            size3 = GetClientSize();
 487     wxLogStatus(wxT("size from event: %dx%d, from frame %dx%d, client %dx%d"),
 488                 size1.x, size1.y, size2.x, size2.y, size3.x, size3.y);
 489
 490     event.Skip();
 491 }
 492
 493 void MyChild::OnClose(wxCloseEvent& event)
 494 {
 495     if ( canvas && canvas->IsDirty() )
 496     {
 497         if ( wxMessageBox(_T("Really close?"), _T("Please confirm"),
 498                           wxICON_QUESTION | wxYES_NO) != wxYES )
 499         {
 500             event.Veto();
 501
 502             return;
 503         }
 504     }
 505
 506     gs_nFrames--;
 507
 508     event.Skip();
 509 }
 510
 511 #if wxUSE_CLIPBOARD
 512
 513 #include "wx/clipbrd.h"
 514
 515 void MyChild::OnPaste(wxCommandEvent& WXUNUSED(event))
 516 {
 517     wxClipboardLocker lock;
 518     wxTextDataObject data;
 519     canvas->SetText(
 520         (
 521             wxTheClipboard->GetData(data) ?
 522             data.GetText() :
 523             wxString("No text on clipboard")
 524         ).c_str()
 525     );
 526 }
 527
 528 void MyChild::OnUpdatePaste(wxUpdateUIEvent& event)
 529 {
 530     wxClipboardLocker lock;
 531     event.Enable( wxTheClipboard->IsSupported(wxDF_TEXT) );
 532 }
 533
 534 #endif // wxUSE_CLIPBOARD