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 #include "wx/utils.h"
  17
  18 #include "gdk/gdk.h"
  19
  20 //-----------------------------------------------------------------------------
  21 // idle system
  22 //-----------------------------------------------------------------------------
  23
  24 extern void wxapp_install_idle_handler();
  25 extern bool g_isIdle;
  26
  27 //-----------------------------------------------------------------------------
  28 // wxCursor
  29 //-----------------------------------------------------------------------------
  30
  31 class wxCursorRefData: public wxObjectRefData
  32 {
  33   public:
  34
  35     wxCursorRefData();
  36     ~wxCursorRefData();
  37
  38     GdkCursor *m_cursor;
  39 };
  40
  41 wxCursorRefData::wxCursorRefData()
  42 {
  43     m_cursor = (GdkCursor *) NULL;
  44 }
  45
  46 wxCursorRefData::~wxCursorRefData()
  47 {
  48     if (m_cursor) gdk_cursor_destroy( m_cursor );
  49 }
  50
  51 //-----------------------------------------------------------------------------
  52
  53 #define M_CURSORDATA ((wxCursorRefData *)m_refData)
  54
  55 IMPLEMENT_DYNAMIC_CLASS(wxCursor,wxObject)
  56
  57 wxCursor::wxCursor()
  58 {
  59 }
  60
  61 wxCursor::wxCursor( int cursorId )
  62 {
  63     m_refData = new wxCursorRefData();
  64
  65     GdkCursorType gdk_cur = GDK_LEFT_PTR;
  66     switch (cursorId)
  67     {
  68         case wxCURSOR_DEFAULT:          gdk_cur = GDK_LEFT_PTR; break;
  69         case wxCURSOR_HAND:             gdk_cur = GDK_HAND1; break;
  70         case wxCURSOR_CROSS:            gdk_cur = GDK_CROSSHAIR; break;
  71         case wxCURSOR_SIZEWE:           gdk_cur = GDK_SB_H_DOUBLE_ARROW; break;
  72         case wxCURSOR_SIZENS:           gdk_cur = GDK_SB_V_DOUBLE_ARROW; break;
  73         case wxCURSOR_WAIT:
  74         case wxCURSOR_WATCH:            gdk_cur = GDK_WATCH; break;
  75         case wxCURSOR_SIZING:           gdk_cur = GDK_SIZING; break;
  76         case wxCURSOR_SPRAYCAN:         gdk_cur = GDK_SPRAYCAN; break;
  77         case wxCURSOR_IBEAM:            gdk_cur = GDK_XTERM; break;
  78         case wxCURSOR_PENCIL:           gdk_cur = GDK_PENCIL; break;
  79         case wxCURSOR_NO_ENTRY:         gdk_cur = GDK_PIRATE; break;
  80         case wxCURSOR_SIZENWSE:
  81         case wxCURSOR_SIZENESW:         gdk_cur = GDK_FLEUR; break;
  82         case wxCURSOR_QUESTION_ARROW:   gdk_cur = GDK_QUESTION_ARROW; break;
  83         case wxCURSOR_PAINT_BRUSH:      gdk_cur = GDK_SPRAYCAN; break;
  84         case wxCURSOR_MAGNIFIER:        gdk_cur = GDK_PLUS; break;
  85         case wxCURSOR_CHAR:             gdk_cur = GDK_XTERM; break;
  86         case wxCURSOR_LEFT_BUTTON:      gdk_cur = GDK_LEFTBUTTON; break;
  87         case wxCURSOR_MIDDLE_BUTTON:    gdk_cur = GDK_MIDDLEBUTTON; break;
  88         case wxCURSOR_RIGHT_BUTTON:     gdk_cur = GDK_RIGHTBUTTON; break;
  89         case wxCURSOR_BULLSEYE:         gdk_cur = GDK_TARGET; break;
  90
  91 /*
  92         case wxCURSOR_DOUBLE_ARROW:     gdk_cur = GDK_DOUBLE_ARROW; break;
  93         case wxCURSOR_CROSS_REVERSE:    gdk_cur = GDK_CROSS_REVERSE; break;
  94         case wxCURSOR_BASED_ARROW_UP:   gdk_cur = GDK_BASED_ARROW_UP; break;
  95         case wxCURSOR_BASED_ARROW_DOWN: gdk_cur = GDK_BASED_ARROW_DOWN; break;
  96 */
  97         default:
  98             wxFAIL_MSG(T("unsupported cursor type"));
  99             // will use the standard one
 100
 101         case wxCURSOR_ARROW:
 102             break;
 103     }
 104
 105     M_CURSORDATA->m_cursor = gdk_cursor_new( gdk_cur );
 106 }
 107
 108 wxCursor::wxCursor( const wxCursor &cursor )
 109 {
 110     Ref( cursor );
 111 }
 112
 113 wxCursor::~wxCursor()
 114 {
 115 }
 116
 117 wxCursor& wxCursor::operator = ( const wxCursor& cursor )
 118 {
 119     if (*this == cursor)
 120         return (*this);
 121
 122     Ref( cursor );
 123
 124     return *this;
 125 }
 126
 127 bool wxCursor::operator == ( const wxCursor& cursor ) const
 128 {
 129     return m_refData == cursor.m_refData;
 130 }
 131
 132 bool wxCursor::operator != ( const wxCursor& cursor ) const
 133 {
 134     return m_refData != cursor.m_refData;
 135 }
 136
 137 bool wxCursor::Ok() const
 138 {
 139     return (m_refData != NULL);
 140 }
 141
 142 GdkCursor *wxCursor::GetCursor() const
 143 {
 144     return M_CURSORDATA->m_cursor;
 145 }
 146
 147 //-----------------------------------------------------------------------------
 148 // busy cursor routines
 149 //-----------------------------------------------------------------------------
 150
 151 extern wxCursor g_globalCursor;
 152
 153 static wxCursor  gs_savedCursor;
 154 static int       gs_busyCount = 0;
 155
 156 void wxEndBusyCursor()
 157 {
 158     if (--gs_busyCount > 0)
 159         return;
 160
 161     wxSetCursor( gs_savedCursor );
 162     gs_savedCursor = wxNullCursor;
 163
 164     wxYield();
 165 }
 166
 167 void wxBeginBusyCursor( wxCursor *WXUNUSED(cursor) )
 168 {
 169     if (gs_busyCount++ > 0)
 170         return;
 171
 172     wxASSERT_MSG( !gs_savedCursor.Ok(),
 173                   T("forgot to call wxEndBusyCursor, will leak memory") );
 174
 175     gs_savedCursor = g_globalCursor;
 176
 177     wxSetCursor( wxCursor(wxCURSOR_WATCH) );
 178
 179     wxYield();
 180 }
 181
 182 bool wxIsBusy()
 183 {
 184     return gs_busyCount > 0;
 185 }
 186
 187 void wxSetCursor( const wxCursor& cursor )
 188 {
 189     if (g_isIdle)
 190         wxapp_install_idle_handler();
 191
 192     g_globalCursor = cursor;
 193 }