src/gtk/dialog.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/gtk/dialog.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 // For compilers that support precompilation, includes "wx.h".
  11 #include "wx/wxprec.h"
  12
  13 #include "wx/dialog.h"
  14
  15 #ifndef WX_PRECOMP
  16     #include "wx/app.h"
  17     #include "wx/frame.h"
  18     #include "wx/cursor.h"
  19 #endif // WX_PRECOMP
  20
  21 #include "wx/evtloop.h"
  22
  23 #include <gdk/gdk.h>
  24 #include <gtk/gtk.h>
  25 #include <gdk/gdkkeysyms.h>
  26
  27 #include "wx/gtk/win_gtk.h"
  28
  29 //-----------------------------------------------------------------------------
  30 // global data
  31 //-----------------------------------------------------------------------------
  32
  33 extern int g_openDialogs;
  34
  35 //-----------------------------------------------------------------------------
  36 // wxDialog
  37 //-----------------------------------------------------------------------------
  38
  39 IMPLEMENT_DYNAMIC_CLASS(wxDialog,wxTopLevelWindow)
  40
  41 void wxDialog::Init()
  42 {
  43     m_returnCode = 0;
  44     m_sizeSet = false;
  45     m_modalShowing = false;
  46     m_themeEnabled = true;
  47 }
  48
  49 wxDialog::wxDialog( wxWindow *parent,
  50                     wxWindowID id, const wxString &title,
  51                     const wxPoint &pos, const wxSize &size,
  52                     long style, const wxString &name )
  53 {
  54     Init();
  55
  56     (void)Create( parent, id, title, pos, size, style, name );
  57 }
  58
  59 bool wxDialog::Create( wxWindow *parent,
  60                        wxWindowID id, const wxString &title,
  61                        const wxPoint &pos, const wxSize &size,
  62                        long style, const wxString &name )
  63 {
  64     SetExtraStyle(GetExtraStyle() | wxTOPLEVEL_EX_DIALOG);
  65
  66     // all dialogs should have tab traversal enabled
  67     style |= wxTAB_TRAVERSAL;
  68
  69     return wxTopLevelWindow::Create(parent, id, title, pos, size, style, name);
  70 }
  71
  72 bool wxDialog::Show( bool show )
  73 {
  74     if (!show && IsModal())
  75     {
  76         EndModal( wxID_CANCEL );
  77     }
  78
  79     if (show && !m_sizeSet)
  80     {
  81         /* by calling GtkOnSize here, we don't have to call
  82            either after showing the frame, which would entail
  83            much ugly flicker nor from within the size_allocate
  84            handler, because GTK 1.1.X forbids that. */
  85
  86         GtkOnSize();
  87     }
  88
  89     bool ret = wxWindow::Show( show );
  90
  91     if (show) InitDialog();
  92
  93     return ret;
  94 }
  95
  96 bool wxDialog::IsModal() const
  97 {
  98     return m_modalShowing;
  99 }
 100
 101 void wxDialog::SetModal( bool WXUNUSED(flag) )
 102 {
 103     wxFAIL_MSG( wxT("wxDialog:SetModal obsolete now") );
 104 }
 105
 106 int wxDialog::ShowModal()
 107 {
 108     if (IsModal())
 109     {
 110        wxFAIL_MSG( wxT("wxDialog:ShowModal called twice") );
 111        return GetReturnCode();
 112     }
 113
 114     // use the apps top level window as parent if none given unless explicitly
 115     // forbidden
 116     if ( !GetParent() && !(GetWindowStyleFlag() & wxDIALOG_NO_PARENT) )
 117     {
 118         wxWindow * const parent = GetParentForModalDialog();
 119         if ( parent && parent != this )
 120         {
 121             gtk_window_set_transient_for( GTK_WINDOW(m_widget),
 122                                           GTK_WINDOW(parent->m_widget) );
 123         }
 124     }
 125
 126     wxBusyCursorSuspender cs; // temporarily suppress the busy cursor
 127
 128     Show( true );
 129
 130     m_modalShowing = true;
 131
 132     g_openDialogs++;
 133
 134     // NOTE: gtk_window_set_modal internally calls gtk_grab_add() !
 135     gtk_window_set_modal(GTK_WINDOW(m_widget), TRUE);
 136
 137     wxEventLoop().Run();
 138
 139     gtk_window_set_modal(GTK_WINDOW(m_widget), FALSE);
 140
 141     g_openDialogs--;
 142
 143     return GetReturnCode();
 144 }
 145
 146 void wxDialog::EndModal( int retCode )
 147 {
 148     SetReturnCode( retCode );
 149
 150     if (!IsModal())
 151     {
 152         wxFAIL_MSG( wxT("wxDialog:EndModal called twice") );
 153         return;
 154     }
 155
 156     m_modalShowing = false;
 157
 158     gtk_main_quit();
 159
 160     Show( false );
 161 }