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