src/gtk/cursor.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        cursor.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10
  11 #ifdef __GNUG__
  12 #pragma implementation "cursor.h"
  13 #endif
  14
  15 #include "wx/cursor.h"
  16
  17 #include "gdk/gdk.h"
  18
  19 //-----------------------------------------------------------------------------
  20 // idle system
  21 //-----------------------------------------------------------------------------
  22
  23 extern void wxapp_install_idle_handler();
  24 extern bool g_isIdle;
  25
  26 //-----------------------------------------------------------------------------
  27 // wxCursor
  28 //-----------------------------------------------------------------------------
  29
  30 class wxCursorRefData: public wxObjectRefData
  31 {
  32   public:
  33
  34     wxCursorRefData();
  35     ~wxCursorRefData();
  36
  37     GdkCursor *m_cursor;
  38 };
  39
  40 wxCursorRefData::wxCursorRefData()
  41 {
  42     m_cursor = (GdkCursor *) NULL;
  43 }
  44
  45 wxCursorRefData::~wxCursorRefData()
  46 {
  47     if (m_cursor) gdk_cursor_destroy( m_cursor );
  48 }
  49
  50 //-----------------------------------------------------------------------------
  51
  52 #define M_CURSORDATA ((wxCursorRefData *)m_refData)
  53
  54 IMPLEMENT_DYNAMIC_CLASS(wxCursor,wxObject)
  55
  56 wxCursor::wxCursor()
  57 {
  58 }
  59
  60 wxCursor::wxCursor( int cursorId )
  61 {
  62     m_refData = new wxCursorRefData();
  63
  64     GdkCursorType gdk_cur = GDK_LEFT_PTR;
  65     switch (cursorId)
  66     {
  67         case wxCURSOR_HAND:             gdk_cur = GDK_HAND1; break;
  68         case wxCURSOR_CROSS:            gdk_cur = GDK_CROSSHAIR; break;
  69         case wxCURSOR_SIZEWE:           gdk_cur = GDK_SB_H_DOUBLE_ARROW; break;
  70         case wxCURSOR_SIZENS:           gdk_cur = GDK_SB_V_DOUBLE_ARROW; break;
  71         case wxCURSOR_WAIT:
  72         case wxCURSOR_WATCH:            gdk_cur = GDK_WATCH; break;
  73         case wxCURSOR_SIZING:           gdk_cur = GDK_SIZING; break;
  74         case wxCURSOR_SPRAYCAN:         gdk_cur = GDK_SPRAYCAN; break;
  75         case wxCURSOR_IBEAM:            gdk_cur = GDK_XTERM; break;
  76         case wxCURSOR_PENCIL:           gdk_cur = GDK_PENCIL; break;
  77         case wxCURSOR_NO_ENTRY:         gdk_cur = GDK_PIRATE; break;
  78         case wxCURSOR_SIZENWSE:
  79         case wxCURSOR_SIZENESW:         gdk_cur = GDK_FLEUR; break;
  80         case wxCURSOR_QUESTION_ARROW:   gdk_cur = GDK_QUESTION_ARROW; break;
  81         case wxCURSOR_PAINT_BRUSH:      gdk_cur = GDK_SPRAYCAN; break;
  82         case wxCURSOR_MAGNIFIER:        gdk_cur = GDK_PLUS; break;
  83         case wxCURSOR_CHAR:             gdk_cur = GDK_XTERM; break;
  84         case wxCURSOR_LEFT_BUTTON:      gdk_cur = GDK_LEFTBUTTON; break;
  85         case wxCURSOR_MIDDLE_BUTTON:    gdk_cur = GDK_MIDDLEBUTTON; break;
  86         case wxCURSOR_RIGHT_BUTTON:     gdk_cur = GDK_RIGHTBUTTON; break;
  87 /*
  88         case wxCURSOR_DOUBLE_ARROW:     gdk_cur = GDK_DOUBLE_ARROW; break;
  89         case wxCURSOR_CROSS_REVERSE:    gdk_cur = GDK_CROSS_REVERSE; break;
  90         case wxCURSOR_BASED_ARROW_UP:   gdk_cur = GDK_BASED_ARROW_UP; break;
  91         case wxCURSOR_BASED_ARROW_DOWN: gdk_cur = GDK_BASED_ARROW_DOWN; break;
  92 */
  93         default:
  94             wxFAIL_MSG(_T("unsupported cursor type"));
  95             // will use the standard one
  96
  97         case wxCURSOR_ARROW:
  98             break;
  99     }
 100
 101     M_CURSORDATA->m_cursor = gdk_cursor_new( gdk_cur );
 102 }
 103
 104 wxCursor::wxCursor( const wxCursor &cursor )
 105 {
 106     Ref( cursor );
 107 }
 108
 109 wxCursor::~wxCursor()
 110 {
 111 }
 112
 113 wxCursor& wxCursor::operator = ( const wxCursor& cursor )
 114 {
 115     if (*this == cursor)
 116         return (*this);
 117
 118     Ref( cursor );
 119
 120     return *this;
 121 }
 122
 123 bool wxCursor::operator == ( const wxCursor& cursor ) const
 124 {
 125     return m_refData == cursor.m_refData;
 126 }
 127
 128 bool wxCursor::operator != ( const wxCursor& cursor ) const
 129 {
 130     return m_refData != cursor.m_refData;
 131 }
 132
 133 bool wxCursor::Ok() const
 134 {
 135     return (m_refData != NULL);
 136 }
 137
 138 GdkCursor *wxCursor::GetCursor() const
 139 {
 140     return M_CURSORDATA->m_cursor;
 141 }
 142
 143 //-----------------------------------------------------------------------------
 144 // busy cursor routines
 145 //-----------------------------------------------------------------------------
 146
 147 extern wxCursor g_globalCursor;
 148
 149 static wxCursor  gs_savedCursor;
 150 static int       gs_busyCount = 0;
 151
 152 void wxEndBusyCursor()
 153 {
 154     if (--gs_busyCount > 0)
 155         return;
 156
 157     wxSetCursor( gs_savedCursor );
 158     gs_savedCursor = wxNullCursor;
 159 }
 160
 161 void wxBeginBusyCursor( wxCursor *WXUNUSED(cursor) )
 162 {
 163     if (gs_busyCount++ > 0)
 164         return;
 165
 166     wxASSERT_MSG( !gs_savedCursor.Ok(),
 167                   _T("forgot to call wxEndBusyCursor, will leak memory") );
 168
 169     gs_savedCursor = g_globalCursor;
 170
 171     wxSetCursor( wxCursor(wxCURSOR_WATCH) );
 172 }
 173
 174 bool wxIsBusy()
 175 {
 176     return gs_busyCount > 0;
 177 }
 178
 179 void wxSetCursor( const wxCursor& cursor )
 180 {
 181     if (g_isIdle)
 182         wxapp_install_idle_handler();
 183
 184     g_globalCursor = cursor;
 185 }