| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: src/motif/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 | // For compilers that support precompilation, includes "wx.h". |
| 13 | #include "wx/wxprec.h" |
| 14 | |
| 15 | #ifndef WX_PRECOMP |
| 16 | #include "wx/list.h" |
| 17 | #endif |
| 18 | |
| 19 | #include "wx/cursor.h" |
| 20 | |
| 21 | #ifndef WX_PRECOMP |
| 22 | #include "wx/app.h" |
| 23 | #include "wx/utils.h" |
| 24 | #include "wx/window.h" |
| 25 | #include "wx/image.h" |
| 26 | #include "wx/log.h" |
| 27 | #endif |
| 28 | |
| 29 | #ifdef __VMS__ |
| 30 | #pragma message disable nosimpint |
| 31 | #endif |
| 32 | #include <Xm/Xm.h> |
| 33 | #include <X11/cursorfont.h> |
| 34 | #ifdef __VMS__ |
| 35 | #pragma message enable nosimpint |
| 36 | #endif |
| 37 | |
| 38 | #include "wx/motif/private.h" |
| 39 | |
| 40 | // Cursor for one display, so we can choose the correct one for |
| 41 | // the current display. |
| 42 | class wxXCursor |
| 43 | { |
| 44 | public: |
| 45 | WXDisplay* m_display; |
| 46 | WXCursor m_cursor; |
| 47 | }; |
| 48 | |
| 49 | WX_DECLARE_LIST(wxXCursor, wxXCursorList); |
| 50 | #include "wx/listimpl.cpp" |
| 51 | WX_DEFINE_LIST(wxXCursorList) |
| 52 | |
| 53 | class WXDLLEXPORT wxCursorRefData: public wxGDIRefData |
| 54 | { |
| 55 | public: |
| 56 | wxCursorRefData(); |
| 57 | virtual ~wxCursorRefData(); |
| 58 | |
| 59 | wxXCursorList m_cursors; // wxXCursor objects, one per display |
| 60 | wxStockCursor m_cursorId; // wxWidgets standard cursor id |
| 61 | |
| 62 | private: |
| 63 | // There is no way to copy m_cursor so we can't implement a copy ctor |
| 64 | // properly. |
| 65 | wxDECLARE_NO_COPY_CLASS(wxCursorRefData); |
| 66 | |
| 67 | friend class wxCursor; |
| 68 | }; |
| 69 | |
| 70 | #define M_CURSORDATA ((wxCursorRefData *)m_refData) |
| 71 | #define M_CURSORHANDLERDATA ((wxCursorRefData *)bitmap->m_refData) |
| 72 | |
| 73 | IMPLEMENT_DYNAMIC_CLASS(wxCursor, wxObject) |
| 74 | |
| 75 | wxCursorRefData::wxCursorRefData() |
| 76 | { |
| 77 | m_cursorId = wxCURSOR_NONE; |
| 78 | } |
| 79 | |
| 80 | wxCursorRefData::~wxCursorRefData() |
| 81 | { |
| 82 | wxXCursorList::compatibility_iterator node = m_cursors.GetFirst(); |
| 83 | while (node) |
| 84 | { |
| 85 | wxXCursor* c = node->GetData(); |
| 86 | XFreeCursor((Display*) c->m_display, (Cursor) c->m_cursor); |
| 87 | delete c; |
| 88 | node = node->GetNext(); |
| 89 | } |
| 90 | } |
| 91 | |
| 92 | wxCursor::wxCursor() |
| 93 | { |
| 94 | } |
| 95 | |
| 96 | #if wxUSE_IMAGE |
| 97 | wxCursor::wxCursor(const wxImage & image) |
| 98 | { |
| 99 | unsigned char * rgbBits = image.GetData(); |
| 100 | int w = image.GetWidth() ; |
| 101 | int h = image.GetHeight(); |
| 102 | bool bHasMask = image.HasMask(); |
| 103 | int imagebitcount = (w*h)/8; |
| 104 | |
| 105 | unsigned char * bits = new unsigned char [imagebitcount]; |
| 106 | unsigned char * maskBits = new unsigned char [imagebitcount]; |
| 107 | |
| 108 | int i, j, i8; |
| 109 | unsigned char c, cMask; |
| 110 | for (i=0; i<imagebitcount; i++) |
| 111 | { |
| 112 | bits[i] = 0xff; |
| 113 | i8 = i * 8; |
| 114 | |
| 115 | cMask = 0xfe; // 11111110 |
| 116 | for (j=0; j<8; j++) |
| 117 | { |
| 118 | // possible overflow if we do the summation first ? |
| 119 | c = (unsigned char)(rgbBits[(i8+j)*3]/3 + rgbBits[(i8+j)*3+1]/3 + rgbBits[(i8+j)*3+2]/3); |
| 120 | // if average value is > mid grey |
| 121 | if (c>127) |
| 122 | bits[i] = bits[i] & cMask; |
| 123 | cMask = (unsigned char)((cMask << 1) | 1); |
| 124 | } |
| 125 | } |
| 126 | |
| 127 | if (bHasMask) |
| 128 | { |
| 129 | unsigned char |
| 130 | r = image.GetMaskRed(), |
| 131 | g = image.GetMaskGreen(), |
| 132 | b = image.GetMaskBlue(); |
| 133 | |
| 134 | for (i=0; i<imagebitcount; i++) |
| 135 | { |
| 136 | maskBits[i] = 0x0; |
| 137 | i8 = i * 8; |
| 138 | |
| 139 | cMask = 0x1; |
| 140 | for (j=0; j<8; j++) |
| 141 | { |
| 142 | if (rgbBits[(i8+j)*3] != r || rgbBits[(i8+j)*3+1] != g || rgbBits[(i8+j)*3+2] != b) |
| 143 | maskBits[i] = maskBits[i] | cMask; |
| 144 | cMask = (unsigned char)(cMask << 1); |
| 145 | } |
| 146 | } |
| 147 | } |
| 148 | else // no mask |
| 149 | { |
| 150 | for (i=0; i<imagebitcount; i++) |
| 151 | maskBits[i] = 0xFF; |
| 152 | } |
| 153 | |
| 154 | int hotSpotX; |
| 155 | int hotSpotY; |
| 156 | |
| 157 | if (image.HasOption(wxIMAGE_OPTION_CUR_HOTSPOT_X)) |
| 158 | hotSpotX = image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_X); |
| 159 | else |
| 160 | hotSpotX = 0; |
| 161 | |
| 162 | if (image.HasOption(wxIMAGE_OPTION_CUR_HOTSPOT_Y)) |
| 163 | hotSpotY = image.GetOptionInt(wxIMAGE_OPTION_CUR_HOTSPOT_Y); |
| 164 | else |
| 165 | hotSpotY = 0; |
| 166 | |
| 167 | if (hotSpotX < 0 || hotSpotX >= w) |
| 168 | hotSpotX = 0; |
| 169 | if (hotSpotY < 0 || hotSpotY >= h) |
| 170 | hotSpotY = 0; |
| 171 | |
| 172 | Create( (const char*)bits, w, h, hotSpotX, hotSpotY, |
| 173 | (const char*)maskBits ); |
| 174 | |
| 175 | delete[] bits; |
| 176 | delete[] maskBits; |
| 177 | } |
| 178 | #endif |
| 179 | |
| 180 | void wxCursor::Create(const char bits[], int width, int height, |
| 181 | int hotSpotX, int hotSpotY, const char maskBits[]) |
| 182 | { |
| 183 | if( !m_refData ) |
| 184 | m_refData = new wxCursorRefData; |
| 185 | |
| 186 | Display *dpy = (Display*) wxGetDisplay(); |
| 187 | int screen_num = DefaultScreen (dpy); |
| 188 | |
| 189 | Pixmap pixmap = XCreatePixmapFromBitmapData (dpy, |
| 190 | RootWindow (dpy, screen_num), |
| 191 | (char*) bits, width, height, |
| 192 | 1 , 0 , 1); |
| 193 | |
| 194 | Pixmap mask_pixmap = None; |
| 195 | if (maskBits != NULL) |
| 196 | { |
| 197 | mask_pixmap = XCreatePixmapFromBitmapData (dpy, |
| 198 | RootWindow (dpy, screen_num), |
| 199 | (char*) maskBits, width, height, |
| 200 | 1 , 0 , 1); |
| 201 | } |
| 202 | |
| 203 | Create( (WXPixmap)pixmap, (WXPixmap)mask_pixmap, hotSpotX, hotSpotY ); |
| 204 | |
| 205 | XFreePixmap( dpy, pixmap ); |
| 206 | if (mask_pixmap != None) |
| 207 | { |
| 208 | XFreePixmap( dpy, mask_pixmap ); |
| 209 | } |
| 210 | } |
| 211 | |
| 212 | void wxCursor::Create(WXPixmap pixmap, WXPixmap mask_pixmap, |
| 213 | int hotSpotX, int hotSpotY) |
| 214 | { |
| 215 | if( !m_refData ) |
| 216 | m_refData = new wxCursorRefData; |
| 217 | |
| 218 | Display *dpy = (Display*) wxGetDisplay(); |
| 219 | int screen_num = DefaultScreen (dpy); |
| 220 | |
| 221 | XColor foreground_color; |
| 222 | XColor background_color; |
| 223 | foreground_color.pixel = BlackPixel(dpy, screen_num); |
| 224 | background_color.pixel = WhitePixel(dpy, screen_num); |
| 225 | Colormap cmap = (Colormap) wxTheApp->GetMainColormap((WXDisplay*) dpy); |
| 226 | XQueryColor(dpy, cmap, &foreground_color); |
| 227 | XQueryColor(dpy, cmap, &background_color); |
| 228 | |
| 229 | Cursor cursor = XCreatePixmapCursor (dpy, |
| 230 | (Pixmap)pixmap, |
| 231 | (Pixmap)mask_pixmap, |
| 232 | &foreground_color, |
| 233 | &background_color, |
| 234 | hotSpotX , |
| 235 | hotSpotY); |
| 236 | |
| 237 | if (cursor) |
| 238 | { |
| 239 | wxXCursor *c = new wxXCursor; |
| 240 | |
| 241 | c->m_cursor = (WXCursor) cursor; |
| 242 | c->m_display = (WXDisplay*) dpy; |
| 243 | M_CURSORDATA->m_cursors.Append(c); |
| 244 | } |
| 245 | } |
| 246 | |
| 247 | wxCursor::wxCursor(const char bits[], int width, int height, |
| 248 | int hotSpotX, int hotSpotY, const char maskBits[] , |
| 249 | const wxColour* WXUNUSED(fg), const wxColour* WXUNUSED(bg) ) |
| 250 | { |
| 251 | Create(bits, width, height, hotSpotX, hotSpotY, maskBits); |
| 252 | } |
| 253 | |
| 254 | wxCursor::wxCursor(const wxString& name, wxBitmapType type, |
| 255 | int hotSpotX, int hotSpotY) |
| 256 | { |
| 257 | // Must be an XBM file |
| 258 | if (type != wxBITMAP_TYPE_XBM) { |
| 259 | wxLogError("Invalid cursor bitmap type '%d'", type); |
| 260 | return; |
| 261 | } |
| 262 | |
| 263 | m_refData = new wxCursorRefData; |
| 264 | |
| 265 | int hotX = -1, hotY = -1; |
| 266 | unsigned int w, h; |
| 267 | Pixmap pixmap = None, mask_pixmap = None; |
| 268 | |
| 269 | Display *dpy = (Display*) wxGetDisplay(); |
| 270 | int screen_num = DefaultScreen (dpy); |
| 271 | |
| 272 | int value = XReadBitmapFile (dpy, RootWindow (dpy, screen_num), |
| 273 | name.mb_str(), |
| 274 | &w, &h, &pixmap, &hotX, &hotY); |
| 275 | |
| 276 | if (value == BitmapSuccess) |
| 277 | { |
| 278 | // TODO: how do we determine whether hotX, hotY were read correctly? |
| 279 | if (hotX < 0 || hotY < 0) |
| 280 | { |
| 281 | hotX = hotSpotX; |
| 282 | hotY = hotSpotY; |
| 283 | } |
| 284 | if (hotX < 0 || hotY < 0) |
| 285 | { |
| 286 | hotX = 0; |
| 287 | hotY = 0; |
| 288 | } |
| 289 | |
| 290 | Create( (WXPixmap)pixmap, (WXPixmap)mask_pixmap, hotX, hotY ); |
| 291 | |
| 292 | XFreePixmap( dpy, pixmap ); |
| 293 | } |
| 294 | } |
| 295 | |
| 296 | // Cursors by stock number |
| 297 | void wxCursor::InitFromStock(wxStockCursor id) |
| 298 | { |
| 299 | m_refData = new wxCursorRefData; |
| 300 | M_CURSORDATA->m_cursorId = id; |
| 301 | } |
| 302 | |
| 303 | wxCursor::~wxCursor() |
| 304 | { |
| 305 | } |
| 306 | |
| 307 | wxGDIRefData *wxCursor::CreateGDIRefData() const |
| 308 | { |
| 309 | return new wxCursorRefData; |
| 310 | } |
| 311 | |
| 312 | wxGDIRefData * |
| 313 | wxCursor::CloneGDIRefData(const wxGDIRefData * WXUNUSED(data)) const |
| 314 | { |
| 315 | wxFAIL_MSG( wxS("Cloning cursors is not implemented in wxMotif.") ); |
| 316 | |
| 317 | return new wxCursorRefData; |
| 318 | } |
| 319 | |
| 320 | // Motif-specific: create/get a cursor for the current display |
| 321 | WXCursor wxCursor::GetXCursor(WXDisplay* display) const |
| 322 | { |
| 323 | if (!M_CURSORDATA) |
| 324 | return (WXCursor) 0; |
| 325 | wxXCursorList::compatibility_iterator node = M_CURSORDATA->m_cursors.GetFirst(); |
| 326 | while (node) |
| 327 | { |
| 328 | wxXCursor* c = node->GetData(); |
| 329 | if (c->m_display == display) |
| 330 | return c->m_cursor; |
| 331 | node = node->GetNext(); |
| 332 | } |
| 333 | |
| 334 | // No cursor for this display, so let's see if we're an id-type cursor. |
| 335 | |
| 336 | if (M_CURSORDATA->m_cursorId != wxCURSOR_NONE) |
| 337 | { |
| 338 | WXCursor cursor = MakeCursor(display, M_CURSORDATA->m_cursorId); |
| 339 | if (cursor) |
| 340 | { |
| 341 | wxXCursor* c = new wxXCursor; |
| 342 | c->m_cursor = cursor; |
| 343 | c->m_display = display; |
| 344 | M_CURSORDATA->m_cursors.Append(c); |
| 345 | return cursor; |
| 346 | } |
| 347 | else |
| 348 | return (WXCursor) 0; |
| 349 | } |
| 350 | |
| 351 | // Not an id-type cursor, so we don't know how to create it. |
| 352 | return (WXCursor) 0; |
| 353 | } |
| 354 | |
| 355 | // Make a cursor from standard id |
| 356 | WXCursor wxCursor::MakeCursor(WXDisplay* display, wxStockCursor id) const |
| 357 | { |
| 358 | Display* dpy = (Display*) display; |
| 359 | Cursor cursor = (Cursor) 0; |
| 360 | int x_cur = -1; |
| 361 | |
| 362 | switch (id) |
| 363 | { |
| 364 | case wxCURSOR_CHAR: return (WXCursor)cursor; |
| 365 | |
| 366 | case wxCURSOR_WAIT: x_cur = XC_watch; break; |
| 367 | case wxCURSOR_CROSS: x_cur = XC_crosshair; break; |
| 368 | case wxCURSOR_HAND: x_cur = XC_hand1; break; |
| 369 | case wxCURSOR_BULLSEYE: x_cur = XC_target; break; |
| 370 | case wxCURSOR_PENCIL: x_cur = XC_pencil; break; |
| 371 | case wxCURSOR_MAGNIFIER: x_cur = XC_sizing; break; |
| 372 | case wxCURSOR_IBEAM: x_cur = XC_xterm; break; |
| 373 | case wxCURSOR_NO_ENTRY: x_cur = XC_pirate; break; |
| 374 | case wxCURSOR_LEFT_BUTTON: x_cur = XC_leftbutton; break; |
| 375 | case wxCURSOR_RIGHT_BUTTON: x_cur = XC_rightbutton; break; |
| 376 | case wxCURSOR_MIDDLE_BUTTON: x_cur = XC_middlebutton; break; |
| 377 | case wxCURSOR_QUESTION_ARROW: x_cur = XC_question_arrow; break; |
| 378 | case wxCURSOR_SIZING: x_cur = XC_sizing; break; |
| 379 | case wxCURSOR_WATCH: x_cur = XC_watch; break; |
| 380 | case wxCURSOR_SPRAYCAN: x_cur = XC_spraycan; break; |
| 381 | case wxCURSOR_PAINT_BRUSH: x_cur = XC_spraycan; break; |
| 382 | case wxCURSOR_SIZENWSE: |
| 383 | case wxCURSOR_SIZENESW: x_cur = XC_crosshair; break; |
| 384 | case wxCURSOR_SIZEWE: x_cur = XC_sb_h_double_arrow; break; |
| 385 | case wxCURSOR_SIZENS: x_cur = XC_sb_v_double_arrow; break; |
| 386 | case wxCURSOR_POINT_LEFT: x_cur = XC_sb_left_arrow; break; |
| 387 | case wxCURSOR_POINT_RIGHT: x_cur = XC_sb_right_arrow; break; |
| 388 | // (JD Huggins) added more stock cursors for X |
| 389 | // X-only cursors BEGIN |
| 390 | case wxCURSOR_CROSS_REVERSE: x_cur = XC_cross_reverse; break; |
| 391 | case wxCURSOR_DOUBLE_ARROW: x_cur = XC_double_arrow; break; |
| 392 | case wxCURSOR_BASED_ARROW_UP: x_cur = XC_based_arrow_up; break; |
| 393 | case wxCURSOR_BASED_ARROW_DOWN: x_cur = XC_based_arrow_down; break; |
| 394 | case wxCURSOR_BLANK: |
| 395 | { |
| 396 | GC gc; |
| 397 | XGCValues gcv; |
| 398 | Pixmap empty_pixmap; |
| 399 | XColor blank_color; |
| 400 | |
| 401 | empty_pixmap = |
| 402 | XCreatePixmap (dpy, RootWindow (dpy, DefaultScreen (dpy)), |
| 403 | 16, 16, 1); |
| 404 | gcv.function = GXxor; |
| 405 | gc = XCreateGC (dpy, |
| 406 | empty_pixmap, |
| 407 | GCFunction, |
| 408 | &gcv); |
| 409 | XCopyArea (dpy, |
| 410 | empty_pixmap, |
| 411 | empty_pixmap, |
| 412 | gc, |
| 413 | 0, 0, |
| 414 | 16, 16, |
| 415 | 0, 0); |
| 416 | XFreeGC (dpy, gc); |
| 417 | cursor = XCreatePixmapCursor (dpy, |
| 418 | empty_pixmap, |
| 419 | empty_pixmap, |
| 420 | &blank_color, |
| 421 | &blank_color, |
| 422 | 8, 8); |
| 423 | |
| 424 | break; |
| 425 | } |
| 426 | case wxCURSOR_ARROW: |
| 427 | default: x_cur = XC_top_left_arrow; break; |
| 428 | } |
| 429 | |
| 430 | if( x_cur == -1 ) |
| 431 | return (WXCursor)cursor; |
| 432 | |
| 433 | cursor = XCreateFontCursor (dpy, x_cur); |
| 434 | return (WXCursor) cursor; |
| 435 | } |
| 436 | |
| 437 | // Global cursor setting |
| 438 | void wxSetCursor(const wxCursor& WXUNUSED(cursor)) |
| 439 | { |
| 440 | // Nothing to do for Motif (no global cursor) |
| 441 | } |
| 442 | |
| 443 | |
| 444 | // ---------------------------------------------------------------------------- |
| 445 | // busy cursor stuff |
| 446 | // ---------------------------------------------------------------------------- |
| 447 | |
| 448 | static int wxBusyCursorCount = 0; |
| 449 | |
| 450 | // Helper function |
| 451 | static void |
| 452 | wxXSetBusyCursor (wxWindow * win, const wxCursor * cursor) |
| 453 | { |
| 454 | Display *display = (Display*) win->GetXDisplay(); |
| 455 | |
| 456 | Window xwin = (Window) win->GetXWindow(); |
| 457 | if (!xwin) |
| 458 | return; |
| 459 | |
| 460 | XSetWindowAttributes attrs; |
| 461 | |
| 462 | if (cursor) |
| 463 | { |
| 464 | attrs.cursor = (Cursor) cursor->GetXCursor(display); |
| 465 | } |
| 466 | else |
| 467 | { |
| 468 | // Restore old cursor |
| 469 | if (win->GetCursor().IsOk()) |
| 470 | attrs.cursor = (Cursor) win->GetCursor().GetXCursor(display); |
| 471 | else |
| 472 | attrs.cursor = None; |
| 473 | } |
| 474 | if (xwin) |
| 475 | XChangeWindowAttributes (display, xwin, CWCursor, &attrs); |
| 476 | |
| 477 | XFlush (display); |
| 478 | |
| 479 | for(wxWindowList::compatibility_iterator node = win->GetChildren().GetFirst (); node; |
| 480 | node = node->GetNext()) |
| 481 | { |
| 482 | wxWindow *child = node->GetData (); |
| 483 | wxXSetBusyCursor (child, cursor); |
| 484 | } |
| 485 | } |
| 486 | |
| 487 | // Set the cursor to the busy cursor for all windows |
| 488 | void wxBeginBusyCursor(const wxCursor *cursor) |
| 489 | { |
| 490 | wxBusyCursorCount++; |
| 491 | if (wxBusyCursorCount == 1) |
| 492 | { |
| 493 | for(wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst (); node; |
| 494 | node = node->GetNext()) |
| 495 | { |
| 496 | wxWindow *win = node->GetData (); |
| 497 | wxXSetBusyCursor (win, cursor); |
| 498 | } |
| 499 | } |
| 500 | } |
| 501 | |
| 502 | // Restore cursor to normal |
| 503 | void wxEndBusyCursor() |
| 504 | { |
| 505 | if (wxBusyCursorCount == 0) |
| 506 | return; |
| 507 | |
| 508 | wxBusyCursorCount--; |
| 509 | if (wxBusyCursorCount == 0) |
| 510 | { |
| 511 | for(wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst (); node; |
| 512 | node = node->GetNext()) |
| 513 | { |
| 514 | wxWindow *win = node->GetData (); |
| 515 | wxXSetBusyCursor (win, NULL); |
| 516 | } |
| 517 | } |
| 518 | } |
| 519 | |
| 520 | // true if we're between the above two calls |
| 521 | bool wxIsBusy() |
| 522 | { |
| 523 | return (wxBusyCursorCount > 0); |
| 524 | } |