src/x11/cursor.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        cursor.cpp
   3 // Purpose:     wxCursor class
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     17/09/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "cursor.h"
  14 #endif
  15
  16 #include "wx/cursor.h"
  17 #include "wx/gdicmn.h"
  18 #include "wx/icon.h"
  19 #include "wx/app.h"
  20 #include "wx/utils.h"
  21
  22 #ifdef __VMS__
  23 #pragma message disable nosimpint
  24 #endif
  25 #include <X11/cursorfont.h>
  26 #include <X11/Xutil.h>
  27 #ifdef __VMS__
  28 #pragma message enable nosimpint
  29 #endif
  30
  31 #include "wx/x11/private.h"
  32
  33 IMPLEMENT_DYNAMIC_CLASS(wxCursor, wxBitmap)
  34 IMPLEMENT_DYNAMIC_CLASS(wxXCursor, wxObject)
  35
  36 wxCursorRefData::wxCursorRefData()
  37 {
  38     m_width = 32; m_height = 32;
  39     m_cursorId = wxCURSOR_NONE;
  40 }
  41
  42 wxCursorRefData::~wxCursorRefData()
  43 {
  44     wxNode* node = m_cursors.First();
  45     while (node)
  46     {
  47         wxXCursor* c = (wxXCursor*) node->Data();
  48         // TODO: how to delete cursor?
  49         // XDestroyCursor((Display*) c->m_display, (Cursor) c->m_cursor); // ??
  50         delete c;
  51         node = node->Next();
  52     }
  53 }
  54
  55 wxCursor::wxCursor()
  56 {
  57 }
  58
  59 wxCursor::wxCursor(const char bits[], int width, int height,
  60     int hotSpotX, int hotSpotY, const char maskBits[])
  61 {
  62     m_refData = new wxCursorRefData;
  63
  64     Display *dpy = (Display*) wxGetDisplay();
  65     int screen_num =  DefaultScreen (dpy);
  66
  67     Pixmap pixmap = XCreatePixmapFromBitmapData (dpy,
  68                                           RootWindow (dpy, DefaultScreen(dpy)),
  69                                           (char*) bits, width, height,
  70                                           1 , 0 , 1);
  71
  72     Pixmap mask_pixmap = None;
  73     if (maskBits != NULL)
  74     {
  75         mask_pixmap = XCreatePixmapFromBitmapData (dpy,
  76                                           RootWindow (dpy, DefaultScreen(dpy)),
  77                                           (char*) maskBits, width, height,
  78                                           1 , 0 , 1);
  79     }
  80
  81     XColor foreground_color;
  82     XColor background_color;
  83     foreground_color.pixel = BlackPixel(dpy, screen_num);
  84     background_color.pixel = WhitePixel(dpy, screen_num);
  85     Colormap cmap = (Colormap) wxTheApp->GetMainColormap((WXDisplay*) dpy);
  86     XQueryColor(dpy, cmap, &foreground_color);
  87     XQueryColor(dpy, cmap, &background_color);
  88
  89     Cursor cursor = XCreatePixmapCursor (dpy,
  90                                   pixmap,
  91                                   mask_pixmap,
  92                                   &foreground_color,
  93                                   &background_color,
  94                                   hotSpotX ,
  95                                   hotSpotY);
  96
  97     XFreePixmap( dpy, pixmap );
  98     if (mask_pixmap != None)
  99     {
 100         XFreePixmap( dpy, mask_pixmap );
 101     }
 102
 103     if (cursor)
 104     {
 105         wxXCursor *c = new wxXCursor;
 106
 107         c->m_cursor = (WXCursor) cursor;
 108         c->m_display = (WXDisplay*) dpy;
 109         M_CURSORDATA->m_cursors.Append(c);
 110         M_CURSORDATA->m_ok = TRUE;
 111     }
 112     else
 113     {
 114         M_CURSORDATA->m_ok = TRUE;
 115     }
 116 }
 117
 118 wxCursor::wxCursor(const wxString& name, long flags, int hotSpotX, int hotSpotY)
 119 {
 120     // Must be an XBM file
 121     if (flags != wxBITMAP_TYPE_XBM)
 122         return;
 123
 124     m_refData = new wxCursorRefData;
 125
 126     int hotX = -1, hotY = -1;
 127     unsigned int w, h;
 128     Pixmap pixmap;
 129
 130     Display *dpy = (Display*) wxGetDisplay();
 131     int screen_num =  DefaultScreen (dpy);
 132
 133     int value = XReadBitmapFile (dpy, RootWindow (dpy, DefaultScreen (dpy)),
 134                         (char*) (const char*) name, &w, &h, &pixmap, &hotX, &hotY);
 135
 136     M_BITMAPDATA->m_width = w;
 137     M_BITMAPDATA->m_height = h;
 138     M_BITMAPDATA->m_depth = 1;
 139
 140     if ((value == BitmapFileInvalid) ||
 141         (value == BitmapOpenFailed) ||
 142         (value == BitmapNoMemory))
 143     {
 144     }
 145     else
 146     {
 147         XColor foreground_color;
 148         XColor background_color;
 149         foreground_color.pixel = BlackPixel(dpy, screen_num);
 150         background_color.pixel = WhitePixel(dpy, screen_num);
 151         Colormap cmap = (Colormap) wxTheApp->GetMainColormap((WXDisplay*) dpy);
 152         XQueryColor(dpy, cmap, &foreground_color);
 153         XQueryColor(dpy, cmap, &background_color);
 154
 155         // TODO: how do we determine whether hotX, hotY were read correctly?
 156         if (hotX < 0 || hotY < 0)
 157         {
 158             hotX = hotSpotX;
 159             hotY = hotSpotY;
 160         }
 161         if (hotX < 0 || hotY < 0)
 162         {
 163             hotX = 0;
 164             hotY = 0;
 165         }
 166
 167         Pixmap mask_pixmap = None;
 168         Cursor cursor = XCreatePixmapCursor (dpy,
 169                                       pixmap,
 170                                       mask_pixmap,
 171                                       &foreground_color,
 172                                       &background_color,
 173                                       hotX,
 174                                       hotY);
 175
 176         XFreePixmap( dpy, pixmap );
 177         if (cursor)
 178         {
 179             wxXCursor *c = new wxXCursor;
 180
 181             c->m_cursor = (WXCursor) cursor;
 182             c->m_display = (WXDisplay*) dpy;
 183             M_CURSORDATA->m_cursors.Append(c);
 184             M_CURSORDATA->m_ok = TRUE;
 185         }
 186     }
 187
 188 }
 189
 190 // Cursors by stock number
 191 wxCursor::wxCursor(wxStockCursor id)
 192 {
 193     m_refData = new wxCursorRefData;
 194     M_CURSORDATA->m_cursorId = id;
 195     M_CURSORDATA->m_ok = TRUE;
 196
 197     WXDisplay* display = wxGetDisplay();
 198     if (!display)
 199       return;
 200
 201     WXCursor cursor = GetXCursor(display);
 202     if (cursor)
 203     {
 204         wxXCursor* c = new wxXCursor;
 205         c->m_cursor = cursor;
 206         c->m_display = wxGetDisplay();
 207         M_CURSORDATA->m_cursors.Append(c);
 208         M_CURSORDATA->m_ok = TRUE;
 209     }
 210 }
 211
 212 wxCursor::~wxCursor()
 213 {
 214 }
 215
 216 // Motif-specific: create/get a cursor for the current display
 217 WXCursor wxCursor::GetXCursor(WXDisplay* display)
 218 {
 219     if (!M_CURSORDATA)
 220         return (WXCursor) 0;
 221     wxNode* node = M_CURSORDATA->m_cursors.First();
 222     while (node)
 223     {
 224         wxXCursor* c = (wxXCursor*) node->Data();
 225         if (c->m_display == display)
 226             return c->m_cursor;
 227         node = node->Next();
 228     }
 229
 230     // No cursor for this display, so let's see if we're an id-type cursor.
 231
 232     if (M_CURSORDATA->m_cursorId != wxCURSOR_NONE)
 233     {
 234         WXCursor cursor = MakeCursor(display, M_CURSORDATA->m_cursorId);
 235         if (cursor)
 236         {
 237             wxXCursor* c = new wxXCursor;
 238             c->m_cursor = cursor;
 239             c->m_display = display;
 240             M_CURSORDATA->m_cursors.Append(c);
 241             return cursor;
 242         }
 243         else
 244             return (WXCursor) 0;
 245     }
 246
 247     // Not an id-type cursor, so we don't know how to create it.
 248     return (WXCursor) 0;
 249 }
 250
 251 // Make a cursor from standard id
 252 WXCursor wxCursor::MakeCursor(WXDisplay* display, wxStockCursor id)
 253 {
 254     Display* dpy = (Display*) display;
 255     Cursor cursor = (Cursor) 0;
 256
 257     switch (id)
 258     {
 259         case wxCURSOR_WAIT:
 260         {
 261             cursor = XCreateFontCursor (dpy, XC_watch);
 262             break;
 263         }
 264         case wxCURSOR_CROSS:
 265         {
 266             cursor = XCreateFontCursor (dpy, XC_crosshair);
 267             break;
 268         }
 269         case wxCURSOR_CHAR:
 270         {
 271             // Nothing
 272             break;
 273         }
 274         case wxCURSOR_HAND:
 275         {
 276             cursor = XCreateFontCursor (dpy, XC_hand1);
 277             break;
 278         }
 279         case wxCURSOR_BULLSEYE:
 280         {
 281             cursor = XCreateFontCursor (dpy, XC_target);
 282             break;
 283         }
 284         case wxCURSOR_PENCIL:
 285        {
 286             cursor = XCreateFontCursor (dpy, XC_pencil);
 287             break;
 288         }
 289         case wxCURSOR_MAGNIFIER:
 290         {
 291             cursor = XCreateFontCursor (dpy, XC_sizing);
 292             break;
 293         }
 294         case wxCURSOR_IBEAM:
 295         {
 296             cursor = XCreateFontCursor (dpy, XC_xterm);
 297             break;
 298         }
 299         case wxCURSOR_NO_ENTRY:
 300         {
 301             cursor = XCreateFontCursor (dpy, XC_pirate);
 302             break;
 303         }
 304         case wxCURSOR_LEFT_BUTTON:
 305         {
 306             cursor = XCreateFontCursor (dpy, XC_leftbutton);
 307             break;
 308         }
 309         case wxCURSOR_RIGHT_BUTTON:
 310         {
 311             cursor = XCreateFontCursor (dpy, XC_rightbutton);
 312             break;
 313         }
 314         case wxCURSOR_MIDDLE_BUTTON:
 315         {
 316             cursor = XCreateFontCursor (dpy, XC_middlebutton);
 317             break;
 318         }
 319         case wxCURSOR_QUESTION_ARROW:
 320         {
 321             cursor = XCreateFontCursor (dpy, XC_question_arrow);
 322             break;
 323         }
 324         case wxCURSOR_SIZING:
 325         {
 326             cursor = XCreateFontCursor (dpy, XC_sizing);
 327             break;
 328         }
 329         case wxCURSOR_WATCH:
 330         {
 331             cursor = XCreateFontCursor (dpy, XC_watch);
 332             break;
 333         }
 334         case wxCURSOR_SPRAYCAN:
 335         {
 336             cursor = XCreateFontCursor (dpy, XC_spraycan);
 337             break;
 338         }
 339         case wxCURSOR_PAINT_BRUSH:
 340         {
 341             cursor = XCreateFontCursor (dpy, XC_spraycan);
 342             break;
 343         }
 344         case wxCURSOR_SIZENWSE:
 345         case wxCURSOR_SIZENESW:
 346         {
 347             // Not available in X
 348             cursor = XCreateFontCursor (dpy, XC_crosshair);
 349             break;
 350         }
 351         case wxCURSOR_SIZEWE:
 352         {
 353             cursor = XCreateFontCursor (dpy, XC_sb_h_double_arrow);
 354             break;
 355         }
 356         case wxCURSOR_SIZENS:
 357         {
 358             cursor = XCreateFontCursor (dpy, XC_sb_v_double_arrow);
 359             break;
 360         }
 361         case wxCURSOR_POINT_LEFT:
 362         {
 363             cursor = XCreateFontCursor (dpy, XC_sb_left_arrow);
 364             break;
 365         }
 366         case wxCURSOR_POINT_RIGHT:
 367         {
 368             cursor = XCreateFontCursor (dpy, XC_sb_right_arrow);
 369             break;
 370         }
 371         // (JD Huggins) added more stock cursors for X
 372         // X-only cursors BEGIN
 373         case wxCURSOR_CROSS_REVERSE:
 374         {
 375             cursor = XCreateFontCursor(dpy, XC_cross_reverse);
 376             break;
 377         }
 378         case wxCURSOR_DOUBLE_ARROW:
 379         {
 380             cursor = XCreateFontCursor(dpy, XC_double_arrow);
 381             break;
 382         }
 383         case wxCURSOR_BASED_ARROW_UP:
 384         {
 385             cursor = XCreateFontCursor(dpy, XC_based_arrow_up);
 386             break;
 387         }
 388         case wxCURSOR_BASED_ARROW_DOWN:
 389         {
 390             cursor = XCreateFontCursor(dpy, XC_based_arrow_down);
 391             break;
 392         }
 393         default:
 394         case wxCURSOR_ARROW:
 395         {
 396             cursor = XCreateFontCursor (dpy, XC_top_left_arrow);
 397             break;
 398         }
 399         case wxCURSOR_BLANK:
 400         {
 401             GC gc;
 402             XGCValues gcv;
 403             Pixmap empty_pixmap;
 404             XColor blank_color;
 405
 406             empty_pixmap = XCreatePixmap (dpy, RootWindow (dpy, DefaultScreen (dpy)),
 407                               16, 16, 1);
 408             gcv.function = GXxor;
 409             gc = XCreateGC (dpy,
 410                     empty_pixmap,
 411                     GCFunction,
 412                     &gcv);
 413             XCopyArea (dpy,
 414                    empty_pixmap,
 415                    empty_pixmap,
 416                    gc,
 417                    0, 0,
 418                    16, 16,
 419                    0, 0);
 420             XFreeGC (dpy, gc);
 421             cursor = XCreatePixmapCursor (dpy,
 422                             empty_pixmap,
 423                             empty_pixmap,
 424                             &blank_color,
 425                             &blank_color,
 426                             8, 8);
 427
 428             break;
 429         }
 430     }
 431     return (WXCursor) cursor;
 432 }
 433
 434 // Global cursor setting
 435 void wxSetCursor(const wxCursor& WXUNUSED(cursor))
 436 {
 437   // Nothing to do for Motif (no global cursor)
 438 }
 439
 440