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 #include "wx/app.h"
  18
  19 #include <gdk/gdk.h>
  20 #include <gtk/gtk.h>
  21
  22 //-----------------------------------------------------------------------------
  23 // idle system
  24 //-----------------------------------------------------------------------------
  25
  26 extern void wxapp_install_idle_handler();
  27 extern bool g_isIdle;
  28
  29 //-----------------------------------------------------------------------------
  30 // wxCursor
  31 //-----------------------------------------------------------------------------
  32
  33 class wxCursorRefData: public wxObjectRefData
  34 {
  35   public:
  36
  37     wxCursorRefData();
  38     ~wxCursorRefData();
  39
  40     GdkCursor *m_cursor;
  41 };
  42
  43 wxCursorRefData::wxCursorRefData()
  44 {
  45     m_cursor = (GdkCursor *) NULL;
  46 }
  47
  48 wxCursorRefData::~wxCursorRefData()
  49 {
  50     if (m_cursor) gdk_cursor_destroy( m_cursor );
  51 }
  52
  53 //-----------------------------------------------------------------------------
  54
  55 #define M_CURSORDATA ((wxCursorRefData *)m_refData)
  56
  57 IMPLEMENT_DYNAMIC_CLASS(wxCursor,wxObject)
  58
  59 wxCursor::wxCursor()
  60 {
  61 }
  62
  63 wxCursor::wxCursor( int cursorId )
  64 {
  65     m_refData = new wxCursorRefData();
  66
  67     GdkCursorType gdk_cur = GDK_LEFT_PTR;
  68     switch (cursorId)
  69     {
  70         case wxCURSOR_DEFAULT:          gdk_cur = GDK_LEFT_PTR; break;
  71         case wxCURSOR_HAND:             gdk_cur = GDK_HAND1; break;
  72         case wxCURSOR_CROSS:            gdk_cur = GDK_CROSSHAIR; break;
  73         case wxCURSOR_SIZEWE:           gdk_cur = GDK_SB_H_DOUBLE_ARROW; break;
  74         case wxCURSOR_SIZENS:           gdk_cur = GDK_SB_V_DOUBLE_ARROW; break;
  75         case wxCURSOR_WAIT:
  76         case wxCURSOR_WATCH:            gdk_cur = GDK_WATCH; break;
  77         case wxCURSOR_SIZING:           gdk_cur = GDK_SIZING; break;
  78         case wxCURSOR_SPRAYCAN:         gdk_cur = GDK_SPRAYCAN; break;
  79         case wxCURSOR_IBEAM:            gdk_cur = GDK_XTERM; break;
  80         case wxCURSOR_PENCIL:           gdk_cur = GDK_PENCIL; break;
  81         case wxCURSOR_NO_ENTRY:         gdk_cur = GDK_PIRATE; break;
  82         case wxCURSOR_SIZENWSE:
  83         case wxCURSOR_SIZENESW:         gdk_cur = GDK_FLEUR; break;
  84         case wxCURSOR_QUESTION_ARROW:   gdk_cur = GDK_QUESTION_ARROW; break;
  85         case wxCURSOR_PAINT_BRUSH:      gdk_cur = GDK_SPRAYCAN; break;
  86         case wxCURSOR_MAGNIFIER:        gdk_cur = GDK_PLUS; break;
  87         case wxCURSOR_CHAR:             gdk_cur = GDK_XTERM; break;
  88         case wxCURSOR_LEFT_BUTTON:      gdk_cur = GDK_LEFTBUTTON; break;
  89         case wxCURSOR_MIDDLE_BUTTON:    gdk_cur = GDK_MIDDLEBUTTON; break;
  90         case wxCURSOR_RIGHT_BUTTON:     gdk_cur = GDK_RIGHTBUTTON; break;
  91         case wxCURSOR_BULLSEYE:         gdk_cur = GDK_TARGET; break;
  92
  93         case wxCURSOR_POINT_LEFT:       gdk_cur = GDK_SB_LEFT_ARROW; break;
  94         case wxCURSOR_POINT_RIGHT:      gdk_cur = GDK_SB_RIGHT_ARROW; break;
  95 /*
  96         case wxCURSOR_DOUBLE_ARROW:     gdk_cur = GDK_DOUBLE_ARROW; break;
  97         case wxCURSOR_CROSS_REVERSE:    gdk_cur = GDK_CROSS_REVERSE; break;
  98         case wxCURSOR_BASED_ARROW_UP:   gdk_cur = GDK_BASED_ARROW_UP; break;
  99         case wxCURSOR_BASED_ARROW_DOWN: gdk_cur = GDK_BASED_ARROW_DOWN; break;
 100 */
 101         default:
 102             wxFAIL_MSG(wxT("unsupported cursor type"));
 103             // will use the standard one
 104
 105         case wxCURSOR_ARROW:
 106             break;
 107     }
 108
 109     M_CURSORDATA->m_cursor = gdk_cursor_new( gdk_cur );
 110 }
 111
 112 extern GtkWidget *wxRootWindow;
 113
 114 wxCursor::wxCursor(const char bits[], int width, int  height,
 115                    int hotSpotX, int hotSpotY,
 116                    const char maskBits[], wxColour *fg, wxColour *bg)
 117 {
 118     if (!maskBits)
 119         maskBits = bits;
 120     if (!fg)
 121         fg = wxBLACK;
 122     if (!bg)
 123         bg = wxWHITE;
 124     if (hotSpotX < 0 || hotSpotX >= width)
 125         hotSpotX = 0;
 126     if (hotSpotY < 0 || hotSpotY >= height)
 127         hotSpotY = 0;
 128
 129     GdkBitmap *data = gdk_bitmap_create_from_data( wxRootWindow->window, (gchar *) bits, width, height );
 130     GdkBitmap *mask = gdk_bitmap_create_from_data( wxRootWindow->window, (gchar *) maskBits, width, height);
 131
 132     m_refData = new wxCursorRefData;
 133     M_CURSORDATA->m_cursor = gdk_cursor_new_from_pixmap(
 134                  data, mask, fg->GetColor(), bg->GetColor(),
 135                  hotSpotX, hotSpotY );
 136
 137     gdk_bitmap_unref( data );
 138     gdk_bitmap_unref( mask );
 139 }
 140
 141
 142 wxCursor::wxCursor( const wxCursor &cursor )
 143 {
 144     Ref( cursor );
 145 }
 146
 147 wxCursor::~wxCursor()
 148 {
 149 }
 150
 151 wxCursor& wxCursor::operator = ( const wxCursor& cursor )
 152 {
 153     if (*this == cursor)
 154         return (*this);
 155
 156     Ref( cursor );
 157
 158     return *this;
 159 }
 160
 161 bool wxCursor::operator == ( const wxCursor& cursor ) const
 162 {
 163     return m_refData == cursor.m_refData;
 164 }
 165
 166 bool wxCursor::operator != ( const wxCursor& cursor ) const
 167 {
 168     return m_refData != cursor.m_refData;
 169 }
 170
 171 bool wxCursor::Ok() const
 172 {
 173     return (m_refData != NULL);
 174 }
 175
 176 GdkCursor *wxCursor::GetCursor() const
 177 {
 178     return M_CURSORDATA->m_cursor;
 179 }
 180
 181 //-----------------------------------------------------------------------------
 182 // busy cursor routines
 183 //-----------------------------------------------------------------------------
 184
 185 extern wxCursor g_globalCursor;
 186
 187 static wxCursor  gs_savedCursor;
 188 static int       gs_busyCount = 0;
 189
 190 const wxCursor &wxBusyCursor::GetStoredCursor()
 191 {
 192     return gs_savedCursor;
 193 }
 194
 195 const wxCursor wxBusyCursor::GetBusyCursor()
 196 {
 197     return wxCursor(wxCURSOR_WATCH);
 198 }
 199
 200 void wxEndBusyCursor()
 201 {
 202     if (--gs_busyCount > 0)
 203         return;
 204
 205     wxSetCursor( gs_savedCursor );
 206     gs_savedCursor = wxNullCursor;
 207
 208     if (wxTheApp)
 209         wxTheApp->SendIdleEvents();
 210 }
 211
 212 void wxBeginBusyCursor( wxCursor *WXUNUSED(cursor) )
 213 {
 214     if (gs_busyCount++ > 0)
 215         return;
 216
 217     wxASSERT_MSG( !gs_savedCursor.Ok(),
 218                   wxT("forgot to call wxEndBusyCursor, will leak memory") );
 219
 220     gs_savedCursor = g_globalCursor;
 221
 222     wxSetCursor( wxCursor(wxCURSOR_WATCH) );
 223
 224     if (wxTheApp)
 225         wxTheApp->SendIdleEvents();
 226 }
 227
 228 bool wxIsBusy()
 229 {
 230     return gs_busyCount > 0;
 231 }
 232
 233 void wxSetCursor( const wxCursor& cursor )
 234 {
 235     if (g_isIdle)
 236         wxapp_install_idle_handler();
 237
 238     g_globalCursor = cursor;
 239 }