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 #include "wx/statline.h"
  30
  31 #include "layout.h"
  32
  33 // Declare two frames
  34 MyFrame   *frame = (MyFrame *) NULL;
  35 wxMenuBar *menu_bar = (wxMenuBar *) NULL;
  36
  37 IMPLEMENT_APP(MyApp)
  38
  39 MyApp::MyApp()
  40 {
  41 }
  42
  43 bool MyApp::OnInit(void)
  44 {
  45   // Create the main frame window
  46   frame = new MyFrame((MyFrame *) NULL, (char *) "wxWindows Layout Demo", 0, 0, 550, 500);
  47
  48   frame->SetAutoLayout(TRUE);
  49
  50   // Give it a status line
  51   frame->CreateStatusBar(2);
  52
  53   // Make a menubar
  54   wxMenu *file_menu = new wxMenu;
  55
  56   file_menu->Append(LAYOUT_LOAD_FILE, "&Load file",      "Load a text file");
  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_NEW, MyFrame::TestNewSizers)
 175   EVT_MENU(LAYOUT_ABOUT, MyFrame::About)
 176   EVT_SIZE(MyFrame::OnSize)
 177 END_EVENT_TABLE()
 178
 179 void MyFrame::LoadFile(wxCommandEvent& WXUNUSED(event) )
 180 {
 181       wxString s = wxFileSelector( _T("Load text file"), (const wxChar *) NULL,
 182                                    (const wxChar *) NULL, (const wxChar *) NULL, _T("*.txt") );
 183       if (s != "")
 184       {
 185 #ifdef __WXMSW__
 186         frame->text_window->LoadFile(s);
 187 #endif
 188       }
 189 }
 190
 191 void MyFrame::Quit(wxCommandEvent& WXUNUSED(event) )
 192 {
 193       this->Close(TRUE);
 194 }
 195
 196 void MyFrame::TestNewSizers(wxCommandEvent& WXUNUSED(event) )
 197 {
 198   NewSizerFrame *newFrame = new NewSizerFrame((MyFrame *) NULL, "Sizer Test Frame", 50, 50 );
 199   newFrame->Show(TRUE);
 200 }
 201
 202 void MyFrame::About(wxCommandEvent& WXUNUSED(event) )
 203 {
 204       (void)wxMessageBox("wxWindows GUI library layout demo\n",
 205             "About Layout Demo", wxOK|wxCENTRE);
 206 }
 207
 208 // Size the subwindows when the frame is resized
 209 void MyFrame::OnSize(wxSizeEvent& WXUNUSED(event) )
 210 {
 211     Layout();
 212 }
 213
 214 void MyFrame::Draw(wxDC& dc, bool WXUNUSED(draw_bitmaps) )
 215 {
 216   dc.SetPen(* wxGREEN_PEN);
 217   dc.DrawLine(0, 0, 200, 200);
 218   dc.DrawLine(200, 0, 0, 200);
 219
 220   dc.SetBrush(* wxCYAN_BRUSH);
 221   dc.SetPen(* wxRED_PEN);
 222
 223   dc.DrawRectangle(100, 100, 100, 50);
 224   dc.DrawRoundedRectangle(150, 150, 100, 50, 20);
 225
 226   dc.DrawEllipse(250, 250, 100, 50);
 227   dc.DrawSpline(50, 200, 50, 100, 200, 10);
 228   dc.DrawLine(50, 230, 200, 230);
 229
 230   dc.SetPen(* wxBLACK_PEN);
 231   dc.DrawArc(50, 300, 100, 250, 100, 300 );
 232 }
 233
 234 //-----------------------------------------------------------------
 235 //  MyWindow
 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 //-----------------------------------------------------------------
 260 //  NewSizerFrame
 261 //-----------------------------------------------------------------
 262
 263 NewSizerFrame::NewSizerFrame(wxFrame *frame, char *title, int x, int y ):
 264   wxFrame(frame, -1, title, wxPoint(x, y) )
 265 {
 266   // we want to get a dialog that is stretchable because it
 267   // has a text ctrl in the middle. at the bottom, we have
 268   // two buttons which.
 269
 270   wxBoxSizer *topsizer = new wxBoxSizer( wxVERTICAL );
 271
 272   // 1) top: create wxStaticText with minimum size equal to its default size
 273   topsizer->Add(
 274     new wxStaticText( this, -1, "An explanation (wxALIGN_RIGHT)." ),
 275     0,                         // make vertically unstretchable
 276     wxALIGN_RIGHT |            // right align text
 277     wxTOP | wxLEFT | wxRIGHT,  // make border all around except wxBOTTOM
 278     5 );                      // set border width to 5
 279
 280   // 2) top: create wxTextCtrl with minimum size (100x60)
 281   topsizer->Add(
 282     new wxTextCtrl( this, -1, "My text (wxEXPAND).", wxDefaultPosition, wxSize(100,60), wxTE_MULTILINE),
 283     1,            // make vertically stretchable
 284     wxEXPAND |    // make horizontally stretchable
 285     wxALL,        //   and make border all around
 286     5 );         // set border width to 5
 287
 288
 289   // 3) middle: create wxStaticLine with minimum size (3x3)
 290   topsizer->Add(
 291      new wxStaticLine( this, -1, wxDefaultPosition, wxSize(3,3), wxHORIZONTAL),
 292      0,           // make vertically unstretchable
 293      wxEXPAND |   // make horizontally stretchable
 294      wxALL,       //   and make border all around
 295      5 );         // set border width to 5
 296
 297
 298   // 4) bottom: create two centred wxButtons
 299   wxBoxSizer *button_box = new wxBoxSizer( wxHORIZONTAL );
 300   button_box->Add(
 301      new wxButton( this, -1, "Two buttons in a box" ),
 302      0,           // make horizontally unstretchable
 303      wxALL,       // make border all around
 304      7 );         // set border width to 7
 305   button_box->Add(
 306      new wxButton( this, -1, "(wxCENTER)" ),
 307      0,           // make horizontally unstretchable
 308      wxALL,       // make border all around
 309      7 );         // set border width to 7
 310
 311   topsizer->Add(
 312      button_box,
 313      0,          // make vertically unstretchable
 314      wxCENTER ); // no border and centre horizontally
 315
 316   SetAutoLayout( TRUE );
 317
 318   // set frame to minimum size
 319   topsizer->Fit( this );
 320
 321   // don't allow frame to get smaller than what the sizers tell ye
 322   topsizer->SetSizeHints( this );
 323
 324   SetSizer( topsizer );
 325 }
 326
 327
 328