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