samples/layout/layout.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        layout.cpp
   3 // Purpose:     Layout 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 // For compilers that support precompilation, includes "wx/wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #ifdef __BORLANDC__
  16 #pragma hdrstop
  17 #endif
  18
  19 #ifndef WX_PRECOMP
  20 #include "wx/wx.h"
  21 #endif
  22
  23 #if !wxUSE_CONSTRAINTS
  24 #error You must set wxUSE_CONSTRAINTS to 1 in setup.h!
  25 #endif
  26
  27 #include <ctype.h>
  28 #include "wx/sizer.h"
  29
  30 #include "layout.h"
  31
  32 // Declare two frames
  33 MyFrame   *frame = (MyFrame *) NULL;
  34 wxMenuBar *menu_bar = (wxMenuBar *) NULL;
  35
  36 IMPLEMENT_APP(MyApp)
  37
  38 MyApp::MyApp()
  39 {
  40 }
  41
  42 bool MyApp::OnInit(void)
  43 {
  44   // Create the main frame window
  45   frame = new MyFrame((MyFrame *) NULL, (char *) "wxWindows Layout Demo", 0, 0, 550, 500);
  46
  47   frame->SetAutoLayout(TRUE);
  48
  49   // Give it a status line
  50   frame->CreateStatusBar(2);
  51
  52   // Make a menubar
  53   wxMenu *file_menu = new wxMenu;
  54
  55   file_menu->Append(LAYOUT_LOAD_FILE, "&Load file",      "Load a text file");
  56   file_menu->Append(LAYOUT_TEST, "&Test sizers",      "Test sizer code");
  57   file_menu->Append(LAYOUT_TEST_NEW, "&Test new sizers",      "Test new sizer code");
  58
  59   file_menu->AppendSeparator();
  60   file_menu->Append(LAYOUT_QUIT, "E&xit",                "Quit program");
  61
  62   wxMenu *help_menu = new wxMenu;
  63   help_menu->Append(LAYOUT_ABOUT, "&About",              "About layout demo");
  64
  65   menu_bar = new wxMenuBar;
  66
  67   menu_bar->Append(file_menu, "&File");
  68   menu_bar->Append(help_menu, "&Help");
  69
  70   // Associate the menu bar with the frame
  71   frame->SetMenuBar(menu_bar);
  72
  73   // Make a panel
  74   frame->panel = new wxPanel(frame, 0, 0, 1000, 500, wxTAB_TRAVERSAL);
  75   frame->panel->SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
  76 //  frame->panel->SetAutoLayout(TRUE);
  77
  78   // Create some panel items
  79   wxButton *btn1 = new wxButton(frame->panel, -1, "A button (1)") ;
  80
  81   wxLayoutConstraints *b1 = new wxLayoutConstraints;
  82   b1->centreX.SameAs    (frame->panel, wxCentreX);
  83   b1->top.SameAs        (frame->panel, wxTop, 5);
  84   b1->width.PercentOf   (frame->panel, wxWidth, 80);
  85   b1->height.PercentOf  (frame->panel, wxHeight, 10);
  86   btn1->SetConstraints(b1);
  87
  88   wxListBox *list = new wxListBox(frame->panel, -1,
  89                                   wxPoint(-1, -1), wxSize(200, 100));
  90   list->Append("Apple");
  91   list->Append("Pear");
  92   list->Append("Orange");
  93   list->Append("Banana");
  94   list->Append("Fruit");
  95
  96   wxLayoutConstraints *b2 = new wxLayoutConstraints;
  97   b2->top.Below         (btn1, 5);
  98   b2->left.SameAs       (frame->panel, wxLeft, 5);
  99   b2->width.PercentOf   (frame->panel, wxWidth, 40);
 100   b2->bottom.SameAs     (frame->panel, wxBottom, 5);
 101   list->SetConstraints(b2);
 102
 103   wxTextCtrl *mtext = new wxTextCtrl(frame->panel, -1, "Some text",
 104                         wxPoint(-1, -1), wxSize(150, 100));
 105
 106   wxLayoutConstraints *b3 = new wxLayoutConstraints;
 107   b3->top.Below         (btn1, 5);
 108   b3->left.RightOf      (list, 5);
 109   b3->right.SameAs      (frame->panel, wxRight, 5);
 110   b3->bottom.SameAs     (frame->panel, wxBottom, 5);
 111   mtext->SetConstraints(b3);
 112
 113   frame->canvas = new MyWindow(frame, 0, 0, 400, 400, wxRETAINED);
 114
 115   // Give it scrollbars: the virtual canvas is 20 * 50 = 1000 pixels in each direction
 116 //  canvas->SetScrollbars(20, 20, 50, 50, 4, 4);
 117
 118   // Make a text window
 119   frame->text_window = new MyTextWindow(frame, 0, 250, 400, 250);
 120
 121   // Set constraints for panel subwindow
 122   wxLayoutConstraints *c1 = new wxLayoutConstraints;
 123
 124   c1->left.SameAs       (frame, wxLeft);
 125   c1->top.SameAs        (frame, wxTop);
 126   c1->right.PercentOf   (frame, wxWidth, 50);
 127   c1->height.PercentOf  (frame, wxHeight, 50);
 128
 129   frame->panel->SetConstraints(c1);
 130
 131   // Set constraints for canvas subwindow
 132   wxLayoutConstraints *c2 = new wxLayoutConstraints;
 133
 134   c2->left.SameAs       (frame->panel, wxRight);
 135   c2->top.SameAs        (frame, wxTop);
 136   c2->right.SameAs      (frame, wxRight);
 137   c2->height.PercentOf  (frame, wxHeight, 50);
 138
 139   frame->canvas->SetConstraints(c2);
 140
 141   // Set constraints for text subwindow
 142   wxLayoutConstraints *c3 = new wxLayoutConstraints;
 143   c3->left.SameAs       (frame, wxLeft);
 144   c3->top.Below         (frame->panel);
 145   c3->right.SameAs      (frame, wxRight);
 146   c3->bottom.SameAs     (frame, wxBottom);
 147
 148   frame->text_window->SetConstraints(c3);
 149
 150   frame->Show(TRUE);
 151
 152   frame->SetStatusText("wxWindows layout demo");
 153
 154   SetTopWindow(frame);
 155   return TRUE;
 156 }
 157
 158 //-----------------------------------------------------------------
 159 //  MyFrame
 160 //-----------------------------------------------------------------
 161
 162 // Define my frame constructor
 163 MyFrame::MyFrame(wxFrame *frame, char *title, int x, int y, int w, int h):
 164   wxFrame(frame, -1, title, wxPoint(x, y), wxSize(w, h))
 165 {
 166   panel = (wxPanel *) NULL;
 167   text_window = (MyTextWindow *) NULL;
 168   canvas = (MyWindow *) NULL;
 169 }
 170
 171 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
 172   EVT_MENU(LAYOUT_LOAD_FILE, MyFrame::LoadFile)
 173   EVT_MENU(LAYOUT_QUIT, MyFrame::Quit)
 174   EVT_MENU(LAYOUT_TEST, MyFrame::TestSizers)
 175   EVT_MENU(LAYOUT_TEST_NEW, MyFrame::TestNewSizers)
 176   EVT_MENU(LAYOUT_ABOUT, MyFrame::About)
 177   EVT_SIZE(MyFrame::OnSize)
 178 END_EVENT_TABLE()
 179
 180 void MyFrame::LoadFile(wxCommandEvent& WXUNUSED(event) )
 181 {
 182       wxString s = wxFileSelector( _T("Load text file"), (const wxChar *) NULL,
 183                                    (const wxChar *) NULL, (const wxChar *) NULL, _T("*.txt") );
 184       if (s != "")
 185       {
 186 #ifdef __WXMSW__
 187         frame->text_window->LoadFile(s);
 188 #endif
 189       }
 190 }
 191
 192 void MyFrame::Quit(wxCommandEvent& WXUNUSED(event) )
 193 {
 194       this->Close(TRUE);
 195 }
 196
 197 void MyFrame::TestSizers(wxCommandEvent& WXUNUSED(event) )
 198 {
 199   SizerFrame *newFrame = new SizerFrame((MyFrame *) NULL, "Sizer Test Frame", 50, 50, 500, 500);
 200   newFrame->Show(TRUE);
 201 }
 202
 203 void MyFrame::TestNewSizers(wxCommandEvent& WXUNUSED(event) )
 204 {
 205   NewSizerFrame *newFrame = new NewSizerFrame((MyFrame *) NULL, "Sizer Test Frame", 50, 50 );
 206   newFrame->Show(TRUE);
 207 }
 208
 209 void MyFrame::About(wxCommandEvent& WXUNUSED(event) )
 210 {
 211       (void)wxMessageBox("wxWindows GUI library layout demo\n",
 212             "About Layout Demo", wxOK|wxCENTRE);
 213 }
 214
 215 // Size the subwindows when the frame is resized
 216 void MyFrame::OnSize(wxSizeEvent& WXUNUSED(event) )
 217 {
 218     Layout();
 219 }
 220
 221 void MyFrame::Draw(wxDC& dc, bool WXUNUSED(draw_bitmaps) )
 222 {
 223   dc.SetPen(* wxGREEN_PEN);
 224   dc.DrawLine(0, 0, 200, 200);
 225   dc.DrawLine(200, 0, 0, 200);
 226
 227   dc.SetBrush(* wxCYAN_BRUSH);
 228   dc.SetPen(* wxRED_PEN);
 229
 230   dc.DrawRectangle(100, 100, 100, 50);
 231   dc.DrawRoundedRectangle(150, 150, 100, 50, 20);
 232
 233   dc.DrawEllipse(250, 250, 100, 50);
 234   dc.DrawSpline(50, 200, 50, 100, 200, 10);
 235   dc.DrawLine(50, 230, 200, 230);
 236
 237   dc.SetPen(* wxBLACK_PEN);
 238   dc.DrawArc(50, 300, 100, 250, 100, 300 );
 239 }
 240
 241 //-----------------------------------------------------------------
 242 //  MyWindow
 243 //-----------------------------------------------------------------
 244
 245 BEGIN_EVENT_TABLE(MyWindow, wxWindow)
 246     EVT_PAINT(MyWindow::OnPaint)
 247 END_EVENT_TABLE()
 248
 249 // Define a constructor for my canvas
 250 MyWindow::MyWindow(wxFrame *frame, int x, int y, int w, int h, long style):
 251  wxWindow(frame, -1, wxPoint(x, y), wxSize(w, h), style)
 252 {
 253 }
 254
 255 MyWindow::~MyWindow(void)
 256 {
 257 }
 258
 259 // Define the repainting behaviour
 260 void MyWindow::OnPaint(wxPaintEvent& WXUNUSED(event) )
 261 {
 262   wxPaintDC dc(this);
 263   frame->Draw(dc,TRUE);
 264 }
 265
 266 //-----------------------------------------------------------------
 267 //  SizerFrame
 268 //-----------------------------------------------------------------
 269
 270 SizerFrame::SizerFrame(wxFrame *frame, char *title, int x, int y, int w, int h):
 271   wxFrame(frame, -1, title, wxPoint(x, y), wxSize(w, h))
 272 {
 273   panel = new wxPanel(this, -1, wxPoint(0, 0), wxSize(-1, -1), wxTAB_TRAVERSAL);
 274   panel->SetBackgroundColour(wxColour(192, 192, 192));
 275
 276   // A sizer to fit the whole panel, plus two sizers, one
 277   // above the other. A button is centred on the lower
 278   // sizer; a rowcol containing 3 buttons is centred on the upper
 279   // sizer.
 280   wxSizer *expandSizer = new wxSizer(panel, wxSizerExpand);
 281   expandSizer->SetName("expandSizer");
 282
 283   wxLayoutConstraints *c;
 284
 285   /////// TOP OF PANEL
 286   ///////
 287   wxSizer *topSizer = new wxSizer(expandSizer);
 288   topSizer->SetName("topSizer");
 289
 290   // Specify constraints for the top sizer
 291   c = new wxLayoutConstraints;
 292   c->left.SameAs       (expandSizer, wxLeft);
 293   c->top.SameAs        (expandSizer, wxTop);
 294   c->right.SameAs      (expandSizer, wxRight);
 295   c->height.PercentOf  (expandSizer, wxHeight, 50);
 296
 297   topSizer->SetConstraints(c);
 298
 299  /*
 300   * Add a row-col sizer and some buttons
 301   */
 302
 303   // Default is layout by rows, 20 columns per row, shrink to fit.
 304   wxRowColSizer *rowCol = new wxRowColSizer(topSizer);
 305   rowCol->SetName("rowCol");
 306
 307   wxButton *button = new wxButton(panel, -1, "Button 1");
 308   rowCol->AddSizerChild(button);
 309
 310   button = new wxButton(panel, -1, "Button 2");
 311   rowCol->AddSizerChild(button);
 312
 313   button = new wxButton(panel, -1, "Button 3");
 314   rowCol->AddSizerChild(button);
 315
 316   // Centre the rowcol in the middle of the upper sizer
 317   c = new wxLayoutConstraints;
 318   c->centreX.SameAs    (topSizer, wxCentreX);
 319   c->centreY.SameAs    (topSizer, wxCentreY);
 320   c->width.AsIs();
 321   c->height.AsIs();
 322   rowCol->SetConstraints(c);
 323
 324   /////// BOTTOM OF PANEL
 325   ///////
 326   wxSizer *bottomSizer = new wxSizer(expandSizer);
 327
 328   // Specify constraints for the bottom sizer
 329   c = new wxLayoutConstraints;
 330   c->left.SameAs       (expandSizer, wxLeft);
 331   c->top.PercentOf     (expandSizer, wxHeight, 50);
 332   c->right.SameAs      (expandSizer, wxRight);
 333   c->height.PercentOf  (expandSizer, wxHeight, 50);
 334
 335   bottomSizer->SetConstraints(c);
 336
 337   wxButton *button2 = new wxButton(panel, -1, "Test button");
 338
 339   // The button should be a child of the bottom sizer
 340   bottomSizer->AddSizerChild(button2);
 341
 342   // Centre the button on the sizer
 343   c = new wxLayoutConstraints;
 344   c->centreX.SameAs    (bottomSizer, wxCentreX);
 345   c->centreY.SameAs    (bottomSizer, wxCentreY);
 346   c->width.PercentOf   (bottomSizer, wxWidth, 20);
 347   c->height.PercentOf  (bottomSizer, wxHeight, 20);
 348   button2->SetConstraints(c);
 349 }
 350
 351 BEGIN_EVENT_TABLE(SizerFrame, wxFrame)
 352   EVT_SIZE(SizerFrame::OnSize)
 353 END_EVENT_TABLE()
 354
 355
 356 // Size the subwindows when the frame is resized
 357 void SizerFrame::OnSize(wxSizeEvent& event)
 358 {
 359   wxFrame::OnSize(event);
 360   panel->Layout();
 361 }
 362
 363 //-----------------------------------------------------------------
 364 //  NewSizerFrame
 365 //-----------------------------------------------------------------
 366
 367 NewSizerFrame::NewSizerFrame(wxFrame *frame, char *title, int x, int y ):
 368   wxFrame(frame, -1, title, wxPoint(x, y) )
 369 {
 370   // no extra options means border all around
 371   topsizer = new wxBorderNewSizer();
 372
 373   // make border 20 pixels wide
 374   topsizer->Add( new wxButton( this, -1, "Hello" ), 20 );
 375
 376   // set frame to minimum size
 377   topsizer->Fit( this );
 378
 379   // don't allow frame to get smaller than what the sizers tell ye
 380   topsizer->SetSizeHints( this );
 381
 382   // layout widgets
 383   topsizer->Layout();
 384 }
 385
 386 // This can later be removed if we integrate wxNewSizers
 387 // into wxWindows
 388
 389 BEGIN_EVENT_TABLE(NewSizerFrame, wxFrame)
 390   EVT_SIZE(NewSizerFrame::OnSize)
 391 END_EVENT_TABLE()
 392
 393 void NewSizerFrame::OnSize(wxSizeEvent& event)
 394 {
 395   wxFrame::OnSize(event);
 396
 397   wxSize client_size( GetClientSize() );
 398
 399   topsizer->SetDimension( 0, 0, client_size.x, client_size.y );
 400 }
 401
 402