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 #include <gtk/gtk.h>
  20
  21 //-----------------------------------------------------------------------------
  22 // idle system
  23 //-----------------------------------------------------------------------------
  24
  25 extern void wxapp_install_idle_handler();
  26 extern bool g_isIdle;
  27
  28 //-----------------------------------------------------------------------------
  29 // wxCursor
  30 //-----------------------------------------------------------------------------
  31
  32 class wxCursorRefData: public wxObjectRefData
  33 {
  34   public:
  35
  36     wxCursorRefData();
  37     ~wxCursorRefData();
  38
  39     GdkCursor *m_cursor;
  40 };
  41
  42 wxCursorRefData::wxCursorRefData()
  43 {
  44     m_cursor = (GdkCursor *) NULL;
  45 }
  46
  47 wxCursorRefData::~wxCursorRefData()
  48 {
  49     if (m_cursor) gdk_cursor_destroy( m_cursor );
  50 }
  51
  52 //-----------------------------------------------------------------------------
  53
  54 #define M_CURSORDATA ((wxCursorRefData *)m_refData)
  55
  56 IMPLEMENT_DYNAMIC_CLASS(wxCursor,wxObject)
  57
  58 wxCursor::wxCursor()
  59 {
  60 }
  61
  62 wxCursor::wxCursor( int cursorId )
  63 {
  64     m_refData = new wxCursorRefData();
  65
  66     GdkCursorType gdk_cur = GDK_LEFT_PTR;
  67     switch (cursorId)
  68     {
  69         case wxCURSOR_DEFAULT:          gdk_cur = GDK_LEFT_PTR; break;
  70         case wxCURSOR_HAND:             gdk_cur = GDK_HAND1; break;
  71         case wxCURSOR_CROSS:            gdk_cur = GDK_CROSSHAIR; break;
  72         case wxCURSOR_SIZEWE:           gdk_cur = GDK_SB_H_DOUBLE_ARROW; break;
  73         case wxCURSOR_SIZENS:           gdk_cur = GDK_SB_V_DOUBLE_ARROW; break;
  74         case wxCURSOR_WAIT:
  75         case wxCURSOR_WATCH:            gdk_cur = GDK_WATCH; break;
  76         case wxCURSOR_SIZING:           gdk_cur = GDK_SIZING; break;
  77         case wxCURSOR_SPRAYCAN:         gdk_cur = GDK_SPRAYCAN; break;
  78         case wxCURSOR_IBEAM:            gdk_cur = GDK_XTERM; break;
  79         case wxCURSOR_PENCIL:           gdk_cur = GDK_PENCIL; break;
  80         case wxCURSOR_NO_ENTRY:         gdk_cur = GDK_PIRATE; break;
  81         case wxCURSOR_SIZENWSE:
  82         case wxCURSOR_SIZENESW:         gdk_cur = GDK_FLEUR; break;
  83         case wxCURSOR_QUESTION_ARROW:   gdk_cur = GDK_QUESTION_ARROW; break;
  84         case wxCURSOR_PAINT_BRUSH:      gdk_cur = GDK_SPRAYCAN; break;
  85         case wxCURSOR_MAGNIFIER:        gdk_cur = GDK_PLUS; break;
  86         case wxCURSOR_CHAR:             gdk_cur = GDK_XTERM; break;
  87         case wxCURSOR_LEFT_BUTTON:      gdk_cur = GDK_LEFTBUTTON; break;
  88         case wxCURSOR_MIDDLE_BUTTON:    gdk_cur = GDK_MIDDLEBUTTON; break;
  89         case wxCURSOR_RIGHT_BUTTON:     gdk_cur = GDK_RIGHTBUTTON; break;
  90         case wxCURSOR_BULLSEYE:         gdk_cur = GDK_TARGET; break;
  91
  92         case wxCURSOR_POINT_LEFT:       gdk_cur = GDK_SB_LEFT_ARROW; break;
  93         case wxCURSOR_POINT_RIGHT:      gdk_cur = GDK_SB_RIGHT_ARROW; break;
  94 /*
  95         case wxCURSOR_DOUBLE_ARROW:     gdk_cur = GDK_DOUBLE_ARROW; break;
  96         case wxCURSOR_CROSS_REVERSE:    gdk_cur = GDK_CROSS_REVERSE; break;
  97         case wxCURSOR_BASED_ARROW_UP:   gdk_cur = GDK_BASED_ARROW_UP; break;
  98         case wxCURSOR_BASED_ARROW_DOWN: gdk_cur = GDK_BASED_ARROW_DOWN; break;
  99 */
 100         default:
 101             wxFAIL_MSG(wxT("unsupported cursor type"));
 102             // will use the standard one
 103
 104         case wxCURSOR_ARROW:
 105             break;
 106     }
 107
 108     M_CURSORDATA->m_cursor = gdk_cursor_new( gdk_cur );
 109 }
 110
 111 extern GtkWidget *wxRootWindow;
 112
 113 wxCursor::wxCursor(const char bits[], int width, int  height,
 114                    int hotSpotX, int hotSpotY,
 115                    const char maskBits[], wxColour *fg, wxColour *bg)
 116 {
 117     if (!maskBits)
 118         maskBits = bits;
 119     if (!fg)
 120         fg = wxBLACK;
 121     if (!bg)
 122         bg = wxWHITE;
 123     if (hotSpotX < 0 || hotSpotX >= width)
 124         hotSpotX = 0;
 125     if (hotSpotY < 0 || hotSpotY >= height)
 126         hotSpotY = 0;
 127
 128     GdkBitmap *data = gdk_bitmap_create_from_data( wxRootWindow->window, (gchar *) bits, width, height );
 129     GdkBitmap *mask = gdk_bitmap_create_from_data( wxRootWindow->window, (gchar *) maskBits, width, height);
 130
 131     m_refData = new wxCursorRefData;
 132     M_CURSORDATA->m_cursor = gdk_cursor_new_from_pixmap(
 133                  data, mask, fg->GetColor(), bg->GetColor(),
 134                  hotSpotX, hotSpotY );
 135
 136     gdk_bitmap_unref( data );
 137     gdk_bitmap_unref( mask );
 138 }
 139
 140
 141 wxCursor::wxCursor( const wxCursor &cursor )
 142 {
 143     Ref( cursor );
 144 }
 145
 146 wxCursor::~wxCursor()
 147 {
 148 }
 149
 150 wxCursor& wxCursor::operator = ( const wxCursor& cursor )
 151 {
 152     if (*this == cursor)
 153         return (*this);
 154
 155     Ref( cursor );
 156
 157     return *this;
 158 }
 159
 160 bool wxCursor::operator == ( const wxCursor& cursor ) const
 161 {
 162     return m_refData == cursor.m_refData;
 163 }
 164
 165 bool wxCursor::operator != ( const wxCursor& cursor ) const
 166 {
 167     return m_refData != cursor.m_refData;
 168 }
 169
 170 bool wxCursor::Ok() const
 171 {
 172     return (m_refData != NULL);
 173 }
 174
 175 GdkCursor *wxCursor::GetCursor() const
 176 {
 177     return M_CURSORDATA->m_cursor;
 178 }
 179
 180 //-----------------------------------------------------------------------------
 181 // busy cursor routines
 182 //-----------------------------------------------------------------------------
 183
 184 extern wxCursor g_globalCursor;
 185
 186 static wxCursor  gs_savedCursor;
 187 static int       gs_busyCount = 0;
 188
 189 const wxCursor &wxBusyCursor::GetStoredCursor()
 190 {
 191     return gs_savedCursor;
 192 }
 193
 194 const wxCursor wxBusyCursor::GetBusyCursor()
 195 {
 196     return wxCursor(wxCURSOR_WATCH);
 197 }
 198
 199 void wxEndBusyCursor()
 200 {
 201     if (--gs_busyCount > 0)
 202         return;
 203
 204     wxSetCursor( gs_savedCursor );
 205     gs_savedCursor = wxNullCursor;
 206
 207     wxYield();
 208 }
 209
 210 void wxBeginBusyCursor( wxCursor *WXUNUSED(cursor) )
 211 {
 212     if (gs_busyCount++ > 0)
 213         return;
 214
 215     wxASSERT_MSG( !gs_savedCursor.Ok(),
 216                   wxT("forgot to call wxEndBusyCursor, will leak memory") );
 217
 218     gs_savedCursor = g_globalCursor;
 219
 220     wxSetCursor( wxCursor(wxCURSOR_WATCH) );
 221
 222     wxYield();
 223 }
 224
 225 bool wxIsBusy()
 226 {
 227     return gs_busyCount > 0;
 228 }
 229
 230 void wxSetCursor( const wxCursor& cursor )
 231 {
 232     if (g_isIdle)
 233         wxapp_install_idle_handler();
 234
 235     g_globalCursor = cursor;
 236 }