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