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 and Markus Holzem
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ===========================================================================
  13 // declarations
  14 // ===========================================================================
  15
  16 // ---------------------------------------------------------------------------
  17 // headers
  18 // ---------------------------------------------------------------------------
  19
  20 #ifdef __VMS
  21 #define XtDisplay XTDISPLAY
  22 #define XtWindow XTWINDOW
  23 #endif
  24
  25 // For compilers that support precompilation, includes "wx/wx.h".
  26 #include "wx/wxprec.h"
  27
  28 #ifdef __BORLANDC__
  29     #pragma hdrstop
  30 #endif
  31
  32 #ifndef WX_PRECOMP
  33     #include "wx/wx.h"
  34     #include "wx/mdi.h"
  35 #endif
  36
  37 #include <wx/toolbar.h>
  38
  39 #if defined(__WXGTK__) || defined(__WXMOTIF__)
  40     #include "mondrian.xpm"
  41     #include "bitmaps/new.xpm"
  42     #include "bitmaps/open.xpm"
  43     #include "bitmaps/save.xpm"
  44     #include "bitmaps/copy.xpm"
  45     #include "bitmaps/cut.xpm"
  46     #include "bitmaps/paste.xpm"
  47     #include "bitmaps/print.xpm"
  48     #include "bitmaps/help.xpm"
  49 #endif
  50
  51 #include "mdi.h"
  52
  53 IMPLEMENT_APP(MyApp)
  54
  55 // ---------------------------------------------------------------------------
  56 // global variables
  57 // ---------------------------------------------------------------------------
  58
  59 MyFrame *frame = (MyFrame *) NULL;
  60 wxList my_children;
  61
  62 // For drawing lines in a canvas
  63 static long xpos = -1;
  64 static long ypos = -1;
  65
  66 static int gs_nFrames = 0;
  67
  68 // ---------------------------------------------------------------------------
  69 // event tables
  70 // ---------------------------------------------------------------------------
  71
  72 BEGIN_EVENT_TABLE(MyFrame, wxMDIParentFrame)
  73     EVT_MENU(MDI_ABOUT, MyFrame::OnAbout)
  74     EVT_MENU(MDI_NEW_WINDOW, MyFrame::OnNewWindow)
  75     EVT_MENU(MDI_QUIT, MyFrame::OnQuit)
  76
  77     EVT_CLOSE(MyFrame::OnClose)
  78
  79     EVT_SIZE(MyFrame::OnSize)
  80 END_EVENT_TABLE()
  81
  82 // Note that MDI_NEW_WINDOW and MDI_ABOUT commands get passed
  83 // to the parent window for processing, so no need to
  84 // duplicate event handlers here.
  85 BEGIN_EVENT_TABLE(MyChild, wxMDIChildFrame)
  86     EVT_MENU(MDI_CHILD_QUIT, MyChild::OnQuit)
  87     EVT_MENU(MDI_REFRESH, MyChild::OnRefresh)
  88     EVT_MENU(MDI_CHANGE_TITLE, MyChild::OnChangeTitle)
  89
  90     EVT_CLOSE(MyChild::OnClose)
  91 END_EVENT_TABLE()
  92
  93 BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
  94     EVT_MOUSE_EVENTS(MyCanvas::OnEvent)
  95 END_EVENT_TABLE()
  96
  97 // ===========================================================================
  98 // implementation
  99 // ===========================================================================
 100
 101 // ---------------------------------------------------------------------------
 102 // MyApp
 103 // ---------------------------------------------------------------------------
 104
 105 // Initialise this in OnInit, not statically
 106 bool MyApp::OnInit()
 107 {
 108     // Create the main frame window
 109
 110     frame = new MyFrame((wxFrame *)NULL, -1, "MDI Demo",
 111                         wxPoint(-1, -1), wxSize(500, 400),
 112                         wxDEFAULT_FRAME_STYLE | wxHSCROLL | wxVSCROLL);
 113 #ifdef __WXMSW__
 114 #if 0
 115     // Experimental: change the window menu
 116     wxMenu* windowMenu = new wxMenu;
 117     windowMenu->Append(5000, "My menu item!");
 118     frame->SetWindowMenu(windowMenu);
 119 #endif
 120 #endif
 121
 122     // Give it an icon
 123 #ifdef __WXMSW__
 124     frame->SetIcon(wxIcon("mdi_icn"));
 125 #else
 126     frame->SetIcon(wxIcon( mondrian_xpm ));
 127 #endif
 128
 129     // Make a menubar
 130     wxMenu *file_menu = new wxMenu;
 131
 132     file_menu->Append(MDI_NEW_WINDOW, "&New window\tCtrl-N", "Create a new child window");
 133     file_menu->Append(MDI_QUIT, "&Exit\tAlt-X", "Quit the program");
 134
 135     wxMenu *help_menu = new wxMenu;
 136     help_menu->Append(MDI_ABOUT, "&About\tF1");
 137
 138     wxMenuBar *menu_bar = new wxMenuBar;
 139
 140     menu_bar->Append(file_menu, "&File");
 141     menu_bar->Append(help_menu, "&Help");
 142
 143     // Associate the menu bar with the frame
 144     frame->SetMenuBar(menu_bar);
 145
 146     frame->CreateStatusBar();
 147
 148     frame->Show(TRUE);
 149
 150     SetTopWindow(frame);
 151
 152     return TRUE;
 153 }
 154
 155 // ---------------------------------------------------------------------------
 156 // MyFrame
 157 // ---------------------------------------------------------------------------
 158
 159 // Define my frame constructor
 160 MyFrame::MyFrame(wxWindow *parent,
 161                  const wxWindowID id,
 162                  const wxString& title,
 163                  const wxPoint& pos,
 164                  const wxSize& size,
 165                  const long style)
 166        : wxMDIParentFrame(parent, id, title, pos, size, style)
 167 {
 168     textWindow = new wxTextCtrl(this, -1, "A help window",
 169                                 wxDefaultPosition, wxDefaultSize,
 170                                 wxTE_MULTILINE | wxSUNKEN_BORDER);
 171
 172     CreateToolBar(wxNO_BORDER | wxTB_FLAT | wxTB_HORIZONTAL);
 173     InitToolBar(GetToolBar());
 174
 175     // Accelerators
 176     wxAcceleratorEntry entries[3];
 177     entries[0].Set(wxACCEL_CTRL, (int) 'N', MDI_NEW_WINDOW);
 178     entries[1].Set(wxACCEL_CTRL, (int) 'X', MDI_QUIT);
 179     entries[2].Set(wxACCEL_CTRL, (int) 'A', MDI_ABOUT);
 180     wxAcceleratorTable accel(3, entries);
 181     SetAcceleratorTable(accel);
 182 }
 183
 184 void MyFrame::OnClose(wxCloseEvent& event)
 185 {
 186     if ( event.CanVeto() && (gs_nFrames > 0) )
 187     {
 188         wxString msg;
 189         msg.Printf(_T("%d windows still open, close anyhow?"), gs_nFrames);
 190         if ( wxMessageBox(msg, "Please confirm",
 191                           wxICON_QUESTION | wxYES_NO) != wxYES )
 192         {
 193             event.Veto();
 194
 195             return;
 196         }
 197     }
 198
 199     event.Skip();
 200 }
 201
 202 void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 203 {
 204     Close();
 205 }
 206
 207 void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event) )
 208 {
 209     (void)wxMessageBox("wxWindows 2.0 MDI Demo\n"
 210                        "Author: Julian Smart (c) 1997\n"
 211                        "Usage: mdi.exe", "About MDI Demo");
 212 }
 213
 214 void MyFrame::OnNewWindow(wxCommandEvent& WXUNUSED(event) )
 215 {
 216     // Make another frame, containing a canvas
 217     MyChild *subframe = new MyChild(frame, "Canvas Frame",
 218                                     wxPoint(-1, -1), wxSize(-1, -1),
 219                                     wxDEFAULT_FRAME_STYLE);
 220
 221     wxString title;
 222     title.Printf(_T("Canvas Frame %d"), ++gs_nFrames);
 223
 224     subframe->SetTitle(title);
 225
 226     // Give it an icon
 227 #ifdef __WXMSW__
 228     subframe->SetIcon(wxIcon("chrt_icn"));
 229 #else
 230     subframe->SetIcon(wxIcon( mondrian_xpm ));
 231 #endif
 232
 233     // Make a menubar
 234     wxMenu *file_menu = new wxMenu;
 235
 236     file_menu->Append(MDI_NEW_WINDOW, "&New window\tCtrl-N");
 237     file_menu->Append(MDI_CHILD_QUIT, "&Close child", "Close this window");
 238     file_menu->Append(MDI_QUIT, "&Exit\tAlt-X");
 239
 240     wxMenu *option_menu = new wxMenu;
 241
 242     option_menu->Append(MDI_REFRESH, "&Refresh picture\tF5");
 243     option_menu->Append(MDI_CHANGE_TITLE, "Change &title...\tCtrl-T");
 244
 245     wxMenu *help_menu = new wxMenu;
 246     help_menu->Append(MDI_ABOUT, "&About\tF1");
 247
 248     wxMenuBar *menu_bar = new wxMenuBar;
 249
 250     menu_bar->Append(file_menu, "&File");
 251     menu_bar->Append(option_menu, "&Options");
 252     menu_bar->Append(help_menu, "&Help");
 253
 254     // Associate the menu bar with the frame
 255     subframe->SetMenuBar(menu_bar);
 256
 257     subframe->CreateStatusBar();
 258     subframe->SetStatusText(title);
 259
 260     int width, height;
 261     subframe->GetClientSize(&width, &height);
 262     MyCanvas *canvas = new MyCanvas(subframe, wxPoint(0, 0), wxSize(width, height));
 263     canvas->SetCursor(wxCursor(wxCURSOR_PENCIL));
 264     subframe->canvas = canvas;
 265
 266     // Give it scrollbars
 267     canvas->SetScrollbars(20, 20, 50, 50);
 268
 269     subframe->Show(TRUE);
 270 }
 271
 272 void MyFrame::OnSize(wxSizeEvent& WXUNUSED(event))
 273 {
 274     int w, h;
 275     GetClientSize(&w, &h);
 276
 277     textWindow->SetSize(0, 0, 200, h);
 278     GetClientWindow()->SetSize(200, 0, w - 200, h);
 279 }
 280
 281 void MyFrame::InitToolBar(wxToolBar* toolBar)
 282 {
 283     wxBitmap* bitmaps[8];
 284
 285 #ifdef __WXMSW__
 286     bitmaps[0] = new wxBitmap("icon1", wxBITMAP_TYPE_RESOURCE);
 287     bitmaps[1] = new wxBitmap("icon2", wxBITMAP_TYPE_RESOURCE);
 288     bitmaps[2] = new wxBitmap("icon3", wxBITMAP_TYPE_RESOURCE);
 289     bitmaps[3] = new wxBitmap("icon4", wxBITMAP_TYPE_RESOURCE);
 290     bitmaps[4] = new wxBitmap("icon5", wxBITMAP_TYPE_RESOURCE);
 291     bitmaps[5] = new wxBitmap("icon6", wxBITMAP_TYPE_RESOURCE);
 292     bitmaps[6] = new wxBitmap("icon7", wxBITMAP_TYPE_RESOURCE);
 293     bitmaps[7] = new wxBitmap("icon8", wxBITMAP_TYPE_RESOURCE);
 294 #else
 295     bitmaps[0] = new wxBitmap( new_xpm );
 296     bitmaps[1] = new wxBitmap( open_xpm );
 297     bitmaps[2] = new wxBitmap( save_xpm );
 298     bitmaps[3] = new wxBitmap( copy_xpm );
 299     bitmaps[4] = new wxBitmap( cut_xpm );
 300     bitmaps[5] = new wxBitmap( paste_xpm );
 301     bitmaps[6] = new wxBitmap( print_xpm );
 302     bitmaps[7] = new wxBitmap( help_xpm );
 303 #endif
 304
 305 #ifdef __WXMSW__
 306     int width = 24;
 307 #else
 308     int width = 16;
 309 #endif
 310     int currentX = 5;
 311
 312     toolBar->AddTool( MDI_NEW_WINDOW, *(bitmaps[0]), wxNullBitmap, FALSE, currentX, -1, (wxObject *) NULL, "New file");
 313     currentX += width + 5;
 314     toolBar->AddTool(1, *bitmaps[1], wxNullBitmap, FALSE, currentX, -1, (wxObject *) NULL, "Open file");
 315     currentX += width + 5;
 316     toolBar->AddTool(2, *bitmaps[2], wxNullBitmap, FALSE, currentX, -1, (wxObject *) NULL, "Save file");
 317     currentX += width + 5;
 318     toolBar->AddSeparator();
 319     toolBar->AddTool(3, *bitmaps[3], wxNullBitmap, FALSE, currentX, -1, (wxObject *) NULL, "Copy");
 320     currentX += width + 5;
 321     toolBar->AddTool(4, *bitmaps[4], wxNullBitmap, FALSE, currentX, -1, (wxObject *) NULL, "Cut");
 322     currentX += width + 5;
 323     toolBar->AddTool(5, *bitmaps[5], wxNullBitmap, FALSE, currentX, -1, (wxObject *) NULL, "Paste");
 324     currentX += width + 5;
 325     toolBar->AddSeparator();
 326     toolBar->AddTool(6, *bitmaps[6], wxNullBitmap, FALSE, currentX, -1, (wxObject *) NULL, "Print");
 327     currentX += width + 5;
 328     toolBar->AddSeparator();
 329     toolBar->AddTool(7, *bitmaps[7], wxNullBitmap, TRUE, currentX, -1, (wxObject *) NULL, "Help");
 330
 331     toolBar->Realize();
 332
 333     int i;
 334     for (i = 0; i < 8; i++)
 335         delete bitmaps[i];
 336 }
 337
 338 // ---------------------------------------------------------------------------
 339 // MyCanvas
 340 // ---------------------------------------------------------------------------
 341
 342 // Define a constructor for my canvas
 343 MyCanvas::MyCanvas(wxWindow *parent, const wxPoint& pos, const wxSize& size)
 344         : wxScrolledWindow(parent, -1, pos, size,
 345                            wxSUNKEN_BORDER|wxVSCROLL|wxHSCROLL)
 346 {
 347     SetBackgroundColour(wxColour("WHITE"));
 348
 349     m_dirty = FALSE;
 350 }
 351
 352 // Define the repainting behaviour
 353 void MyCanvas::OnDraw(wxDC& dc)
 354 {
 355     dc.SetFont(*wxSWISS_FONT);
 356     dc.SetPen(*wxGREEN_PEN);
 357     dc.DrawLine(0, 0, 200, 200);
 358     dc.DrawLine(200, 0, 0, 200);
 359
 360     dc.SetBrush(*wxCYAN_BRUSH);
 361     dc.SetPen(*wxRED_PEN);
 362     dc.DrawRectangle(100, 100, 100, 50);
 363     dc.DrawRoundedRectangle(150, 150, 100, 50, 20);
 364
 365     dc.DrawEllipse(250, 250, 100, 50);
 366 #if wxUSE_SPLINES
 367     dc.DrawSpline(50, 200, 50, 100, 200, 10);
 368 #endif // wxUSE_SPLINES
 369     dc.DrawLine(50, 230, 200, 230);
 370     dc.DrawText("This is a test string", 50, 230);
 371
 372     wxPoint points[3];
 373     points[0].x = 200; points[0].y = 300;
 374     points[1].x = 100; points[1].y = 400;
 375     points[2].x = 300; points[2].y = 400;
 376
 377     dc.DrawPolygon(3, points);
 378 }
 379
 380 // This implements a tiny doodling program! Drag the mouse using the left
 381 // button.
 382 void MyCanvas::OnEvent(wxMouseEvent& event)
 383 {
 384     wxClientDC dc(this);
 385     PrepareDC(dc);
 386
 387     wxPoint pt(event.GetLogicalPosition(dc));
 388
 389     if (xpos > -1 && ypos > -1 && event.Dragging())
 390     {
 391         dc.SetPen(*wxBLACK_PEN);
 392         dc.DrawLine(xpos, ypos, pt.x, pt.y);
 393
 394         m_dirty = TRUE;
 395     }
 396
 397     xpos = pt.x;
 398     ypos = pt.y;
 399 }
 400
 401 // ---------------------------------------------------------------------------
 402 // MyChild
 403 // ---------------------------------------------------------------------------
 404
 405 MyChild::MyChild(wxMDIParentFrame *parent, const wxString& title,
 406                  const wxPoint& pos, const wxSize& size,
 407                  const long style)
 408        : wxMDIChildFrame(parent, -1, title, pos, size, style)
 409 {
 410     canvas = (MyCanvas *) NULL;
 411     my_children.Append(this);
 412 }
 413
 414 MyChild::~MyChild()
 415 {
 416     my_children.DeleteObject(this);
 417 }
 418
 419 void MyChild::OnQuit(wxCommandEvent& WXUNUSED(event))
 420 {
 421     Close(TRUE);
 422 }
 423
 424 void MyChild::OnRefresh(wxCommandEvent& WXUNUSED(event))
 425 {
 426     if ( canvas )
 427         canvas->Refresh();
 428 }
 429
 430 void MyChild::OnChangeTitle(wxCommandEvent& WXUNUSED(event))
 431 {
 432     static wxString s_title = _T("Canvas Frame");
 433
 434     wxString title = wxGetTextFromUser(_T("Enter the new title for MDI child"),
 435                                        _T("MDI sample question"),
 436                                        s_title,
 437                                        GetParent());
 438     if ( !title )
 439         return;
 440
 441     s_title = title;
 442     SetTitle(s_title);
 443 }
 444
 445 void MyChild::OnActivate(wxActivateEvent& event)
 446 {
 447     if ( event.GetActive() && canvas )
 448         canvas->SetFocus();
 449 }
 450
 451 void MyChild::OnClose(wxCloseEvent& event)
 452 {
 453     if ( canvas && canvas->IsDirty() )
 454     {
 455         if ( wxMessageBox("Really close?", "Please confirm",
 456                           wxICON_QUESTION | wxYES_NO) != wxYES )
 457         {
 458             event.Veto();
 459
 460             return;
 461         }
 462     }
 463
 464     gs_nFrames--;
 465
 466     event.Skip();
 467 }
 468
 469