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