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 // Don't allow window closing if there are open dialogs
  34 int g_openDialogs;
  35
  36 //-----------------------------------------------------------------------------
  37 // wxDialog
  38 //-----------------------------------------------------------------------------
  39
  40 IMPLEMENT_DYNAMIC_CLASS(wxDialog,wxTopLevelWindow)
  41
  42 void wxDialog::Init()
  43 {
  44     m_returnCode = 0;
  45     m_sizeSet = false;
  46     m_modalShowing = false;
  47     m_themeEnabled = true;
  48 }
  49
  50 wxDialog::wxDialog( wxWindow *parent,
  51                     wxWindowID id, const wxString &title,
  52                     const wxPoint &pos, const wxSize &size,
  53                     long style, const wxString &name )
  54 {
  55     Init();
  56
  57     (void)Create( parent, id, title, pos, size, style, name );
  58 }
  59
  60 bool wxDialog::Create( wxWindow *parent,
  61                        wxWindowID id, const wxString &title,
  62                        const wxPoint &pos, const wxSize &size,
  63                        long style, const wxString &name )
  64 {
  65     SetExtraStyle(GetExtraStyle() | wxTOPLEVEL_EX_DIALOG);
  66
  67     // all dialogs should have tab traversal enabled
  68     style |= wxTAB_TRAVERSAL;
  69
  70     return wxTopLevelWindow::Create(parent, id, title, pos, size, style, name);
  71 }
  72
  73 bool wxDialog::Show( bool show )
  74 {
  75     if (!show && IsModal())
  76     {
  77         EndModal( wxID_CANCEL );
  78     }
  79
  80     if (show && !m_sizeSet)
  81     {
  82         /* by calling GtkOnSize here, we don't have to call
  83            either after showing the frame, which would entail
  84            much ugly flicker nor from within the size_allocate
  85            handler, because GTK 1.1.X forbids that. */
  86
  87         GtkOnSize();
  88     }
  89
  90     bool ret = wxWindow::Show( show );
  91
  92     if (show) InitDialog();
  93
  94     return ret;
  95 }
  96
  97 bool wxDialog::IsModal() const
  98 {
  99     return m_modalShowing;
 100 }
 101
 102 void wxDialog::SetModal( bool WXUNUSED(flag) )
 103 {
 104     wxFAIL_MSG( wxT("wxDialog:SetModal obsolete now") );
 105 }
 106
 107 int wxDialog::ShowModal()
 108 {
 109     if (IsModal())
 110     {
 111        wxFAIL_MSG( wxT("wxDialog:ShowModal called twice") );
 112        return GetReturnCode();
 113     }
 114
 115     // release the mouse if it's currently captured as the window having it
 116     // will be disabled when this dialog is shown -- but will still keep the
 117     // capture making it impossible to do anything in the modal dialog itself
 118     wxWindow * const win = wxWindow::GetCapture();
 119     if ( win )
 120         win->GTKReleaseMouseAndNotify();
 121
 122     // use the apps top level window as parent if none given unless explicitly
 123     // forbidden
 124     if ( !GetParent() && !(GetWindowStyleFlag() & wxDIALOG_NO_PARENT) )
 125     {
 126         wxWindow * const parent = GetParentForModalDialog();
 127         if ( parent && parent != this )
 128         {
 129             gtk_window_set_transient_for( GTK_WINDOW(m_widget),
 130                                           GTK_WINDOW(parent->m_widget) );
 131         }
 132     }
 133
 134     wxBusyCursorSuspender cs; // temporarily suppress the busy cursor
 135
 136     Show( true );
 137
 138     m_modalShowing = true;
 139
 140     g_openDialogs++;
 141
 142     // NOTE: gtk_window_set_modal internally calls gtk_grab_add() !
 143     gtk_window_set_modal(GTK_WINDOW(m_widget), TRUE);
 144
 145     wxGUIEventLoop().Run();
 146
 147     gtk_window_set_modal(GTK_WINDOW(m_widget), FALSE);
 148
 149     g_openDialogs--;
 150
 151     return GetReturnCode();
 152 }
 153
 154 void wxDialog::EndModal( int retCode )
 155 {
 156     SetReturnCode( retCode );
 157
 158     if (!IsModal())
 159     {
 160         wxFAIL_MSG( wxT("wxDialog:EndModal called twice") );
 161         return;
 162     }
 163
 164     m_modalShowing = false;
 165
 166     gtk_main_quit();
 167
 168     Show( false );
 169 }