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 "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( _T("Load text file"), (const wxChar *) NULL,
 175                                    (const wxChar *) NULL, (const wxChar *) NULL, _T("*.txt") );
 176       if (s != "")
 177       {
 178 #ifdef __WXMSW__
 179         frame->text_window->LoadFile(s);
 180 #endif
 181       }
 182 }
 183
 184 void MyFrame::Quit(wxCommandEvent& WXUNUSED(event) )
 185 {
 186       this->Close(TRUE);
 187 }
 188
 189 void MyFrame::TestSizers(wxCommandEvent& WXUNUSED(event) )
 190 {
 191   SizerFrame *newFrame = new SizerFrame((MyFrame *) NULL, (char *) "Sizer Test Frame", 50, 50, 500, 500);
 192   newFrame->Show(TRUE);
 193 }
 194
 195 void MyFrame::About(wxCommandEvent& WXUNUSED(event) )
 196 {
 197       (void)wxMessageBox("wxWindows GUI library layout demo\n",
 198             "About Layout Demo", wxOK|wxCENTRE);
 199 }
 200
 201 // Size the subwindows when the frame is resized
 202 void MyFrame::OnSize(wxSizeEvent& WXUNUSED(event) )
 203 {
 204     Layout();
 205 }
 206
 207 void MyFrame::Draw(wxDC& dc, bool WXUNUSED(draw_bitmaps) )
 208 {
 209   dc.SetPen(* wxGREEN_PEN);
 210   dc.DrawLine(0, 0, 200, 200);
 211   dc.DrawLine(200, 0, 0, 200);
 212
 213   dc.SetBrush(* wxCYAN_BRUSH);
 214   dc.SetPen(* wxRED_PEN);
 215
 216   dc.DrawRectangle(100, 100, 100, 50);
 217   dc.DrawRoundedRectangle(150, 150, 100, 50, 20);
 218
 219   dc.DrawEllipse(250, 250, 100, 50);
 220   dc.DrawSpline(50, 200, 50, 100, 200, 10);
 221   dc.DrawLine(50, 230, 200, 230);
 222
 223   dc.SetPen(* wxBLACK_PEN);
 224   dc.DrawArc(50, 300, 100, 250, 100, 300 );
 225 }
 226
 227 BEGIN_EVENT_TABLE(MyWindow, wxWindow)
 228     EVT_PAINT(MyWindow::OnPaint)
 229 END_EVENT_TABLE()
 230
 231 // Define a constructor for my canvas
 232 MyWindow::MyWindow(wxFrame *frame, int x, int y, int w, int h, long style):
 233  wxWindow(frame, -1, wxPoint(x, y), wxSize(w, h), style)
 234 {
 235 }
 236
 237 MyWindow::~MyWindow(void)
 238 {
 239 }
 240
 241 // Define the repainting behaviour
 242 void MyWindow::OnPaint(wxPaintEvent& WXUNUSED(event) )
 243 {
 244   wxPaintDC dc(this);
 245   frame->Draw(dc,TRUE);
 246 }
 247
 248
 249 SizerFrame::SizerFrame(wxFrame *frame, char *title, int x, int y, int w, int h):
 250   wxFrame(frame, -1, title, wxPoint(x, y), wxSize(w, h))
 251 {
 252   panel = new wxPanel(this, -1, wxPoint(0, 0), wxSize(-1, -1), wxTAB_TRAVERSAL);
 253   panel->SetBackgroundColour(wxColour(192, 192, 192));
 254
 255   // A sizer to fit the whole panel, plus two sizers, one
 256   // above the other. A button is centred on the lower
 257   // sizer; a rowcol containing 3 buttons is centred on the upper
 258   // sizer.
 259   wxSizer *expandSizer = new wxSizer(panel, wxSizerExpand);
 260   expandSizer->SetName("expandSizer");
 261
 262   wxLayoutConstraints *c;
 263
 264   /////// TOP OF PANEL
 265   ///////
 266   wxSizer *topSizer = new wxSizer(expandSizer);
 267   topSizer->SetName("topSizer");
 268
 269   // Specify constraints for the top sizer
 270   c = new wxLayoutConstraints;
 271   c->left.SameAs       (expandSizer, wxLeft);
 272   c->top.SameAs        (expandSizer, wxTop);
 273   c->right.SameAs      (expandSizer, wxRight);
 274   c->height.PercentOf  (expandSizer, wxHeight, 50);
 275
 276   topSizer->SetConstraints(c);
 277
 278  /*
 279   * Add a row-col sizer and some buttons
 280   */
 281
 282   // Default is layout by rows, 20 columns per row, shrink to fit.
 283   wxRowColSizer *rowCol = new wxRowColSizer(topSizer);
 284   rowCol->SetName("rowCol");
 285
 286   wxButton *button = new wxButton(panel, -1, "Button 1");
 287   rowCol->AddSizerChild(button);
 288
 289   button = new wxButton(panel, -1, "Button 2");
 290   rowCol->AddSizerChild(button);
 291
 292   button = new wxButton(panel, -1, "Button 3");
 293   rowCol->AddSizerChild(button);
 294
 295   // Centre the rowcol in the middle of the upper sizer
 296   c = new wxLayoutConstraints;
 297   c->centreX.SameAs    (topSizer, wxCentreX);
 298   c->centreY.SameAs    (topSizer, wxCentreY);
 299   c->width.AsIs();
 300   c->height.AsIs();
 301   rowCol->SetConstraints(c);
 302
 303   /////// BOTTOM OF PANEL
 304   ///////
 305   wxSizer *bottomSizer = new wxSizer(expandSizer);
 306
 307   // Specify constraints for the bottom sizer
 308   c = new wxLayoutConstraints;
 309   c->left.SameAs       (expandSizer, wxLeft);
 310   c->top.PercentOf     (expandSizer, wxHeight, 50);
 311   c->right.SameAs      (expandSizer, wxRight);
 312   c->height.PercentOf  (expandSizer, wxHeight, 50);
 313
 314   bottomSizer->SetConstraints(c);
 315
 316   wxButton *button2 = new wxButton(panel, -1, "Test button");
 317
 318   // The button should be a child of the bottom sizer
 319   bottomSizer->AddSizerChild(button2);
 320
 321   // Centre the button on the sizer
 322   c = new wxLayoutConstraints;
 323   c->centreX.SameAs    (bottomSizer, wxCentreX);
 324   c->centreY.SameAs    (bottomSizer, wxCentreY);
 325   c->width.PercentOf   (bottomSizer, wxWidth, 20);
 326   c->height.PercentOf  (bottomSizer, wxHeight, 20);
 327   button2->SetConstraints(c);
 328 }
 329
 330 BEGIN_EVENT_TABLE(SizerFrame, wxFrame)
 331   EVT_SIZE(SizerFrame::OnSize)
 332 END_EVENT_TABLE()
 333
 334
 335 // Size the subwindows when the frame is resized
 336 void SizerFrame::OnSize(wxSizeEvent& event)
 337 {
 338   wxFrame::OnSize(event);
 339   panel->Layout();
 340 }
 341