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