src/motif/dialog.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/motif/dialog.cpp
   3 // Purpose:     wxDialog class
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     17/09/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // For compilers that support precompilation, includes "wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #include "wx/dialog.h"
  16
  17 #ifndef WX_PRECOMP
  18     #include "wx/app.h"
  19     #include "wx/utils.h"
  20     #include "wx/settings.h"
  21 #endif
  22
  23 #include "wx/evtloop.h"
  24
  25 #ifdef __VMS__
  26 #pragma message disable nosimpint
  27 #endif
  28 #include <Xm/Xm.h>
  29
  30 #include <X11/Shell.h>
  31 #if XmVersion >= 1002
  32 #include <Xm/XmAll.h>
  33 #endif
  34 #include <Xm/MwmUtil.h>
  35 #include <Xm/Label.h>
  36 #include <Xm/BulletinB.h>
  37 #include <Xm/Frame.h>
  38 #include <Xm/Text.h>
  39 #include <Xm/DialogS.h>
  40 #include <Xm/FileSB.h>
  41 #include <Xm/RowColumn.h>
  42 #include <Xm/LabelG.h>
  43 #include <Xm/AtomMgr.h>
  44 #if   XmVersion > 1000
  45 #include <Xm/Protocols.h>
  46 #endif
  47 #ifdef __VMS__
  48 #pragma message enable nosimpint
  49 #endif
  50
  51 #include "wx/motif/private.h"
  52
  53 // A stack of modal_showing flags, since we can't rely
  54 // on accessing wxDialog::m_modalShowing within
  55 // wxDialog::Show in case a callback has deleted the wxDialog.
  56 // static wxList wxModalShowingStack;
  57
  58 // Lists to keep track of windows, so we can disable/enable them
  59 // for modal dialogs
  60 wxList wxModalDialogs;
  61 extern wxList wxModelessWindows;  // Frames and modeless dialogs
  62
  63 #define wxUSE_INVISIBLE_RESIZE 1
  64
  65 IMPLEMENT_DYNAMIC_CLASS(wxDialog, wxTopLevelWindow)
  66
  67 wxDialog::wxDialog()
  68 {
  69     m_modalShowing = false;
  70     m_eventLoop = NULL;
  71 }
  72
  73 bool wxDialog::Create(wxWindow *parent, wxWindowID id,
  74                       const wxString& title,
  75                       const wxPoint& pos,
  76                       const wxSize& size,
  77                       long style,
  78                       const wxString& name)
  79 {
  80     SetExtraStyle(GetExtraStyle() | wxTOPLEVEL_EX_DIALOG);
  81
  82     if( !wxTopLevelWindow::Create( parent, id, title, pos, size, style,
  83                                    name ) )
  84         return false;
  85
  86     m_modalShowing = false;
  87     m_eventLoop = NULL;
  88
  89     Widget dialogShell = (Widget) m_mainWidget;
  90
  91     SetTitle( title );
  92
  93     // Can't remember what this was about... but I think it's necessary.
  94 #if wxUSE_INVISIBLE_RESIZE
  95     if (pos.x > -1)
  96         XtVaSetValues(dialogShell, XmNx, pos.x,
  97         NULL);
  98     if (pos.y > -1)
  99         XtVaSetValues(dialogShell, XmNy, pos.y,
 100         NULL);
 101
 102     if (size.x > -1)
 103         XtVaSetValues(dialogShell, XmNwidth, size.x, NULL);
 104     if (size.y > -1)
 105         XtVaSetValues(dialogShell, XmNheight, size.y, NULL);
 106 #endif
 107
 108     // Positioning of the dialog doesn't work properly unless the dialog
 109     // is managed, so we manage without mapping to the screen.
 110     // To show, we map the shell (actually it's parent).
 111 #if !wxUSE_INVISIBLE_RESIZE
 112     Widget shell = XtParent(dialogShell) ;
 113     XtVaSetValues(shell, XmNmappedWhenManaged, False, NULL);
 114 #endif
 115
 116 #if !wxUSE_INVISIBLE_RESIZE
 117     XtManageChild(dialogShell);
 118     SetSize(pos.x, pos.y, size.x, size.y);
 119 #endif
 120
 121     XtAddEventHandler(dialogShell,ExposureMask,False,
 122         wxUniversalRepaintProc, (XtPointer) this);
 123
 124     PostCreation();
 125
 126     return true;
 127 }
 128
 129 bool wxDialog::XmDoCreateTLW(wxWindow* parent,
 130                              wxWindowID WXUNUSED(id),
 131                              const wxString& WXUNUSED(title),
 132                              const wxPoint& WXUNUSED(pos),
 133                              const wxSize& WXUNUSED(size),
 134                              long WXUNUSED(style),
 135                              const wxString& name)
 136 {
 137     Widget parentWidget = (Widget) 0;
 138     if( parent )
 139         parentWidget = (Widget) parent->GetTopWidget();
 140     if( !parent )
 141         parentWidget = (Widget) wxTheApp->GetTopLevelWidget();
 142
 143     wxASSERT_MSG( (parentWidget != (Widget) 0),
 144                   "Could not find a suitable parent shell for dialog." );
 145
 146     Arg args[2];
 147     XtSetArg (args[0], XmNdefaultPosition, False);
 148     XtSetArg (args[1], XmNautoUnmanage, False);
 149     Widget dialogShell =
 150         XmCreateBulletinBoardDialog( parentWidget,
 151                                      name.char_str(),
 152                                      args, 2);
 153     m_mainWidget = (WXWidget) dialogShell;
 154
 155     // We don't want margins, since there is enough elsewhere.
 156     XtVaSetValues( dialogShell,
 157                    XmNmarginHeight,   0,
 158                    XmNmarginWidth,    0,
 159                    XmNresizePolicy, XmRESIZE_NONE,
 160                    NULL ) ;
 161
 162     XtTranslations ptr ;
 163     XtOverrideTranslations(dialogShell,
 164         ptr = XtParseTranslationTable("<Configure>: resize()"));
 165     XtFree((char *)ptr);
 166
 167     XtRealizeWidget(dialogShell);
 168
 169     wxAddWindowToTable( (Widget)m_mainWidget, this );
 170
 171     return true;
 172 }
 173
 174 void wxDialog::SetModal(bool flag)
 175 {
 176    if ( flag )
 177        wxModelessWindows.DeleteObject(this);
 178    else
 179        wxModelessWindows.Append(this);
 180 }
 181
 182 wxDialog::~wxDialog()
 183 {
 184     SendDestroyEvent();
 185
 186     // if the dialog is modal, this will end its event loop
 187     Show(false);
 188
 189     delete m_eventLoop;
 190
 191     if (m_mainWidget)
 192     {
 193         XtRemoveEventHandler((Widget) m_mainWidget, ExposureMask, False,
 194                              wxUniversalRepaintProc, (XtPointer) this);
 195     }
 196
 197     m_modalShowing = false;
 198
 199 #if !wxUSE_INVISIBLE_RESIZE
 200     if (m_mainWidget)
 201     {
 202         XtUnmapWidget((Widget) m_mainWidget);
 203     }
 204 #endif
 205
 206     PreDestroy();
 207
 208     if ( m_mainWidget )
 209     {
 210         wxDeleteWindowFromTable( (Widget)m_mainWidget );
 211         XtDestroyWidget( (Widget)m_mainWidget );
 212     }
 213 }
 214
 215 void wxDialog::DoSetSize(int x, int y, int width, int height, int sizeFlags)
 216 {
 217     XtVaSetValues((Widget) m_mainWidget, XmNresizePolicy, XmRESIZE_ANY, NULL);
 218     wxWindow::DoSetSize(x, y, width, height, sizeFlags);
 219     XtVaSetValues((Widget) m_mainWidget, XmNresizePolicy, XmRESIZE_NONE, NULL);
 220 }
 221
 222 void wxDialog::DoSetClientSize(int width, int height)
 223 {
 224     wxWindow::SetSize(-1, -1, width, height);
 225 }
 226
 227 void wxDialog::SetTitle(const wxString& title)
 228 {
 229     wxTopLevelWindow::SetTitle( title );
 230
 231     if( !title.empty() )
 232     {
 233         wxXmString str( title );
 234         XtVaSetValues( (Widget)m_mainWidget,
 235                        XmNtitle, (const char*)title.mb_str(),
 236                        XmNdialogTitle, str(),
 237                        XmNiconName, (const char*)title.mb_str(),
 238                        NULL );
 239     }
 240 }
 241
 242 bool wxDialog::Show( bool show )
 243 {
 244     if( !wxWindowBase::Show( show ) )
 245         return false;
 246
 247     if ( !show && IsModal() )
 248         EndModal(wxID_CANCEL);
 249
 250     m_isShown = show;
 251
 252     if (show)
 253     {
 254         if (CanDoLayoutAdaptation())
 255             DoLayoutAdaptation();
 256
 257         // this usually will result in TransferDataToWindow() being called
 258         // which will change the controls values so do it before showing as
 259         // otherwise we could have some flicker
 260         InitDialog();
 261     }
 262
 263     if (show)
 264     {
 265 #if !wxUSE_INVISIBLE_RESIZE
 266         XtMapWidget(XtParent((Widget) m_mainWidget));
 267 #else
 268         XtManageChild((Widget)m_mainWidget) ;
 269 #endif
 270
 271         XRaiseWindow( XtDisplay( (Widget)m_mainWidget ),
 272                       XtWindow( (Widget)m_mainWidget) );
 273
 274     }
 275     else
 276     {
 277 #if !wxUSE_INVISIBLE_RESIZE
 278         XtUnmapWidget(XtParent((Widget) m_mainWidget));
 279 #else
 280         XtUnmanageChild((Widget)m_mainWidget) ;
 281 #endif
 282
 283         XFlush(XtDisplay((Widget)m_mainWidget));
 284         XSync(XtDisplay((Widget)m_mainWidget), False);
 285     }
 286
 287     return true;
 288 }
 289
 290 // Shows a dialog modally, returning a return code
 291 int wxDialog::ShowModal()
 292 {
 293     Show(true);
 294
 295     // after the event loop ran, the widget might already have been destroyed
 296     WXDisplay* display = (WXDisplay*)XtDisplay( (Widget)m_mainWidget );
 297
 298     if (m_modalShowing)
 299         return 0;
 300     m_eventLoop = new wxEventLoop;
 301
 302     m_modalShowing = true;
 303     XtAddGrab((Widget) m_mainWidget, True, False);
 304
 305     m_eventLoop->Run();
 306
 307     // Now process all events in case they get sent to a destroyed dialog
 308     wxFlushEvents( display );
 309
 310     delete m_eventLoop;
 311     m_eventLoop = NULL;
 312
 313     // TODO: is it safe to call this, if the dialog may have been deleted
 314     // by now? Probably only if we're using delayed deletion of dialogs.
 315     return GetReturnCode();
 316 }
 317
 318 void wxDialog::EndModal(int retCode)
 319 {
 320     if (!m_modalShowing)
 321         return;
 322
 323     SetReturnCode(retCode);
 324
 325     // Strangely, we don't seem to need this now.
 326     //    XtRemoveGrab((Widget) m_mainWidget);
 327
 328     Show(false);
 329
 330     m_modalShowing = false;
 331     m_eventLoop->Exit();
 332
 333     SetModal(false);
 334 }
 335
 336 // Destroy the window (delayed, if a managed window)
 337 bool wxDialog::Destroy()
 338 {
 339     if (!wxPendingDelete.Member(this))
 340         wxPendingDelete.Append(this);
 341     return true;
 342 }
 343
 344 void wxDialog::ChangeFont(bool keepOriginalSize)
 345 {
 346     wxWindow::ChangeFont(keepOriginalSize);
 347 }
 348
 349 void wxDialog::ChangeBackgroundColour()
 350 {
 351     if (GetMainWidget())
 352         wxDoChangeBackgroundColour(GetMainWidget(), m_backgroundColour);
 353 }
 354
 355 void wxDialog::ChangeForegroundColour()
 356 {
 357     if (GetMainWidget())
 358         wxDoChangeForegroundColour(GetMainWidget(), m_foregroundColour);
 359 }