src/desktop-events.cpp

   1 /** @file
   2  * @brief Event handlers for SPDesktop
   3  */
   4 /* Author:
   5  *   Lauris Kaplinski <lauris@kaplinski.com>
   6  *
   7  * Copyright (C) 1999-2002 Lauris Kaplinski
   8  * Copyright (C) 1999-2010 Others
   9  *
  10  * Released under GNU GPL, read the file 'COPYING' for more information
  11  */
  12
  13 #ifdef HAVE_CONFIG_H
  14 # include <config.h>
  15 #endif
  16 #include <map>
  17 #include <string>
  18 #include <2geom/line.h>
  19 #include <glibmm/i18n.h>
  20
  21 #include "desktop.h"
  22 #include "desktop-handles.h"
  23 #include "dialogs/dialog-events.h"
  24 #include "display/canvas-axonomgrid.h"
  25 #include "display/canvas-grid.h"
  26 #include "display/guideline.h"
  27 #include "display/snap-indicator.h"
  28 #include "document.h"
  29 #include "event-context.h"
  30 #include "helper/action.h"
  31 #include "helper/unit-menu.h"
  32 #include "helper/units.h"
  33 #include "message-context.h"
  34 #include "preferences.h"
  35 #include "snap.h"
  36 #include "sp-guide.h"
  37 #include "sp-metrics.h"
  38 #include "sp-namedview.h"
  39 #include "tools-switch.h"
  40 #include "ui/dialog/guides.h"
  41 #include "widgets/desktop-widget.h"
  42 #include "xml/repr.h"
  43
  44 static void snoop_extended(GdkEvent* event, SPDesktop *desktop);
  45 static void init_extended();
  46
  47 /* Root item handler */
  48
  49 int sp_desktop_root_handler(SPCanvasItem */*item*/, GdkEvent *event, SPDesktop *desktop)
  50 {
  51     static bool watch = false;
  52     static bool first = true;
  53
  54     if ( first ) {
  55         Inkscape::Preferences *prefs = Inkscape::Preferences::get();
  56         if ( prefs->getBool("/options/useextinput/value", true)
  57             && prefs->getBool("/options/switchonextinput/value") ) {
  58             watch = true;
  59             init_extended();
  60         }
  61         first = false;
  62     }
  63     if ( watch ) {
  64         snoop_extended(event, desktop);
  65     }
  66
  67     return sp_event_context_root_handler(desktop->event_context, event);
  68 }
  69
  70 static gint sp_dt_ruler_event(GtkWidget *widget, GdkEvent *event, SPDesktopWidget *dtw, bool horiz)
  71 {
  72     static bool dragging = false;
  73     static SPCanvasItem *guide = NULL;
  74     static Geom::Point normal;
  75     int wx, wy;
  76
  77     SPDesktop *desktop = dtw->desktop;
  78     Inkscape::XML::Node *repr = SP_OBJECT_REPR(desktop->namedview);
  79
  80     gdk_window_get_pointer(GTK_WIDGET(dtw->canvas)->window, &wx, &wy, NULL);
  81     Geom::Point const event_win(wx, wy);
  82
  83     gint width, height;
  84     gdk_window_get_geometry(GTK_WIDGET(dtw->canvas)->window, NULL /*x*/, NULL /*y*/, &width, &height, NULL/*depth*/);
  85
  86     switch (event->type) {
  87     case GDK_BUTTON_PRESS:
  88             if (event->button.button == 1) {
  89                 dragging = true;
  90
  91                 Geom::Point const event_w(sp_canvas_window_to_world(dtw->canvas, event_win));
  92                 Geom::Point const event_dt(desktop->w2d(event_w));
  93
  94                 // explicitly show guidelines; if I draw a guide, I want them on
  95                 sp_repr_set_boolean(repr, "showguides", TRUE);
  96                 sp_repr_set_boolean(repr, "inkscape:guide-bbox", TRUE);
  97
  98                 // calculate the normal of the guidelines when dragged from the edges of rulers.
  99                 Geom::Point normal_bl_to_tr(-1.,1.); //bottomleft to topright
 100                 Geom::Point normal_tr_to_bl(1.,1.); //topright to bottomleft
 101                 normal_bl_to_tr.normalize();
 102                 normal_tr_to_bl.normalize();
 103                 Inkscape::CanvasGrid * grid = sp_namedview_get_first_enabled_grid(desktop->namedview);
 104                 if ( grid && grid->getGridType() == Inkscape::GRID_AXONOMETRIC ) {
 105                     Inkscape::CanvasAxonomGrid *axonomgrid = dynamic_cast<Inkscape::CanvasAxonomGrid *>(grid);
 106                     if (event->button.state & GDK_CONTROL_MASK) {
 107                         // guidelines normal to gridlines
 108                         normal_bl_to_tr = Geom::Point::polar(-axonomgrid->angle_rad[0], 1.0);
 109                         normal_tr_to_bl = Geom::Point::polar(axonomgrid->angle_rad[2], 1.0);
 110                     } else {
 111                         normal_bl_to_tr = rot90(Geom::Point::polar(axonomgrid->angle_rad[2], 1.0));
 112                         normal_tr_to_bl = rot90(Geom::Point::polar(-axonomgrid->angle_rad[0], 1.0));
 113                     }
 114                 }
 115                 if (horiz) {
 116                     if (wx < 50) {
 117                         normal = normal_bl_to_tr;
 118                     } else if (wx > width - 50) {
 119                         normal = normal_tr_to_bl;
 120                     } else {
 121                         normal = Geom::Point(0.,1.);
 122                     }
 123                 } else {
 124                     if (wy < 50) {
 125                         normal = normal_bl_to_tr;
 126                     } else if (wy > height - 50) {
 127                         normal = normal_tr_to_bl;
 128                     } else {
 129                         normal = Geom::Point(1.,0.);
 130                     }
 131                 }
 132
 133                 guide = sp_guideline_new(desktop->guides, event_dt, normal);
 134                 sp_guideline_set_color(SP_GUIDELINE(guide), desktop->namedview->guidehicolor);
 135                 gdk_pointer_grab(widget->window, FALSE,
 136                                  (GdkEventMask)(GDK_BUTTON_RELEASE_MASK | GDK_POINTER_MOTION_MASK ),
 137                                  NULL, NULL,
 138                                  event->button.time);
 139             }
 140             break;
 141     case GDK_MOTION_NOTIFY:
 142             if (dragging) {
 143                 Geom::Point const event_w(sp_canvas_window_to_world(dtw->canvas, event_win));
 144                 Geom::Point event_dt(desktop->w2d(event_w));
 145
 146                 if (!(event->motion.state & GDK_SHIFT_MASK)) {
 147                     SnapManager &m = desktop->namedview->snap_manager;
 148                     m.setup(desktop);
 149                     // We only have a temporary guide which is not stored in our document yet.
 150                     // Because the guide snapper only looks in the document for guides to snap to,
 151                     // we don't have to worry about a guide snapping to itself here
 152                     m.guideFreeSnap(event_dt, normal, SP_DRAG_MOVE_ORIGIN);
 153                 }
 154
 155                 sp_guideline_set_position(SP_GUIDELINE(guide), from_2geom(event_dt));
 156                 desktop->set_coordinate_status(to_2geom(event_dt));
 157                 desktop->setPosition(to_2geom(event_dt));
 158             }
 159             break;
 160     case GDK_BUTTON_RELEASE:
 161             if (dragging && event->button.button == 1) {
 162                 sp_event_context_discard_delayed_snap_event(desktop->event_context);
 163
 164                 gdk_pointer_ungrab(event->button.time);
 165                 Geom::Point const event_w(sp_canvas_window_to_world(dtw->canvas, event_win));
 166                 Geom::Point event_dt(desktop->w2d(event_w));
 167
 168                 if (!(event->button.state & GDK_SHIFT_MASK)) {
 169                     SnapManager &m = desktop->namedview->snap_manager;
 170                     m.setup(desktop);
 171                     // We only have a temporary guide which is not stored in our document yet.
 172                     // Because the guide snapper only looks in the document for guides to snap to,
 173                     // we don't have to worry about a guide snapping to itself here
 174                     m.guideFreeSnap(event_dt, normal, SP_DRAG_MOVE_ORIGIN);
 175                 }
 176
 177                 dragging = false;
 178
 179                 gtk_object_destroy(GTK_OBJECT(guide));
 180                 guide = NULL;
 181                 if ((horiz ? wy : wx) >= 0) {
 182                     Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
 183                     Inkscape::XML::Node *repr = xml_doc->createElement("sodipodi:guide");
 184                     sp_repr_set_point(repr, "orientation", normal);
 185                     sp_repr_set_point(repr, "position", from_2geom(event_dt));
 186                     SP_OBJECT_REPR(desktop->namedview)->appendChild(repr);
 187                     Inkscape::GC::release(repr);
 188                     sp_document_done(sp_desktop_document(desktop), SP_VERB_NONE,
 189                                      _("Create guide"));
 190                 }
 191                 desktop->set_coordinate_status(from_2geom(event_dt));
 192             }
 193     default:
 194             break;
 195     }
 196
 197     return FALSE;
 198 }
 199
 200 int sp_dt_hruler_event(GtkWidget *widget, GdkEvent *event, SPDesktopWidget *dtw)
 201 {
 202     if (event->type == GDK_MOTION_NOTIFY) {
 203         sp_event_context_snap_delay_handler(dtw->desktop->event_context, (gpointer) widget, (gpointer) dtw, (GdkEventMotion *)event, DelayedSnapEvent::GUIDE_HRULER);
 204     }
 205     return sp_dt_ruler_event(widget, event, dtw, true);
 206 }
 207
 208 int sp_dt_vruler_event(GtkWidget *widget, GdkEvent *event, SPDesktopWidget *dtw)
 209 {
 210     if (event->type == GDK_MOTION_NOTIFY) {
 211         sp_event_context_snap_delay_handler(dtw->desktop->event_context, (gpointer) widget, (gpointer) dtw, (GdkEventMotion *)event, DelayedSnapEvent::GUIDE_VRULER);
 212     }
 213     return sp_dt_ruler_event(widget, event, dtw, false);
 214 }
 215
 216 static Geom::Point drag_origin;
 217 static SPGuideDragType drag_type = SP_DRAG_NONE;
 218 //static bool reset_drag_origin = false; // when Ctrl is pressed while dragging, this is used to trigger resetting of the
 219 //                                       // drag origin to that location so that constrained movement is more intuitive
 220
 221 // Min distance from anchor to initiate rotation, measured in screenpixels
 222 #define tol 40.0
 223
 224 gint sp_dt_guide_event(SPCanvasItem *item, GdkEvent *event, gpointer data)
 225 {
 226     static bool moved = false;
 227     gint ret = FALSE;
 228
 229     SPGuide *guide = SP_GUIDE(data);
 230     SPDesktop *desktop = static_cast<SPDesktop*>(gtk_object_get_data(GTK_OBJECT(item->canvas), "SPDesktop"));
 231
 232     switch (event->type) {
 233     case GDK_2BUTTON_PRESS:
 234             if (event->button.button == 1) {
 235                 drag_type = SP_DRAG_NONE;
 236                 sp_event_context_discard_delayed_snap_event(desktop->event_context);
 237                 sp_canvas_item_ungrab(item, event->button.time);
 238                 Inkscape::UI::Dialogs::GuidelinePropertiesDialog::showDialog(guide, desktop);
 239                 ret = TRUE;
 240             }
 241             break;
 242     case GDK_BUTTON_PRESS:
 243             if (event->button.button == 1) {
 244                 Geom::Point const event_w(event->button.x, event->button.y);
 245                 Geom::Point const event_dt(desktop->w2d(event_w));
 246
 247                 // Due to the tolerance allowed when grabbing a guide, event_dt will generally
 248                 // be close to the guide but not just exactly on it. The drag origin calculated
 249                 // here must be exactly on the guide line though, otherwise
 250                 // small errors will occur once we snap, see
 251                 // https://bugs.launchpad.net/inkscape/+bug/333762
 252                 drag_origin = Geom::projection(event_dt, Geom::Line(guide->point_on_line, guide->angle()));
 253
 254                 if (event->button.state & GDK_SHIFT_MASK) {
 255                     // with shift we rotate the guide
 256                     drag_type = SP_DRAG_ROTATE;
 257                 } else {
 258                     if (event->button.state & GDK_CONTROL_MASK) {
 259                         drag_type = SP_DRAG_MOVE_ORIGIN;
 260                     } else {
 261                         drag_type = SP_DRAG_TRANSLATE;
 262                     }
 263                 }
 264
 265                 if (drag_type == SP_DRAG_ROTATE || drag_type == SP_DRAG_TRANSLATE) {
 266                     sp_canvas_item_grab(item,
 267                                         ( GDK_BUTTON_RELEASE_MASK  |
 268                                           GDK_BUTTON_PRESS_MASK    |
 269                                           GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK ),
 270                                         NULL,
 271                                         event->button.time);
 272                 }
 273                 ret = TRUE;
 274             }
 275             break;
 276         case GDK_MOTION_NOTIFY:
 277             if (drag_type != SP_DRAG_NONE) {
 278                 Geom::Point const motion_w(event->motion.x,
 279                                            event->motion.y);
 280                 Geom::Point motion_dt(desktop->w2d(motion_w));
 281
 282                 sp_event_context_snap_delay_handler(desktop->event_context, (gpointer) item, data, (GdkEventMotion *)event, DelayedSnapEvent::GUIDE_HANDLER);
 283
 284                 // This is for snapping while dragging existing guidelines. New guidelines,
 285                 // which are dragged off the ruler, are being snapped in sp_dt_ruler_event
 286                 SnapManager &m = desktop->namedview->snap_manager;
 287                 m.setup(desktop, true, NULL, NULL, guide);
 288                 if (drag_type == SP_DRAG_MOVE_ORIGIN) {
 289                     // If we snap in guideConstrainedSnap() below, then motion_dt will
 290                     // be forced to be on the guide. If we don't snap however, then
 291                     // the origin should still be constrained to the guide. So let's do
 292                     // that explicitly first:
 293                     Geom::Line line(guide->point_on_line, guide->angle());
 294                     Geom::Coord t = line.nearestPoint(motion_dt);
 295                     motion_dt = line.pointAt(t);
 296                     if (!(event->motion.state & GDK_SHIFT_MASK)) {
 297                         m.guideConstrainedSnap(motion_dt, *guide);
 298                     }
 299                 } else if (!((drag_type == SP_DRAG_ROTATE) && (event->motion.state & GDK_CONTROL_MASK))) {
 300                                         // cannot use shift here to disable snapping, because we already use it for rotating the guide
 301                         m.guideFreeSnap(motion_dt, guide->normal_to_line, drag_type);
 302                 }
 303
 304                 switch (drag_type) {
 305                     case SP_DRAG_TRANSLATE:
 306                     {
 307                         sp_guide_moveto(*guide, motion_dt, false);
 308                         break;
 309                     }
 310                     case SP_DRAG_ROTATE:
 311                     {
 312                         Geom::Point pt = motion_dt - guide->point_on_line;
 313                         double angle = std::atan2(pt[Geom::Y], pt[Geom::X]);
 314                         if (event->motion.state & GDK_CONTROL_MASK) {
 315                             Inkscape::Preferences *prefs = Inkscape::Preferences::get();
 316                             unsigned const snaps = abs(prefs->getInt("/options/rotationsnapsperpi/value", 12));
 317                             if (snaps) {
 318                                 double sections = floor(angle * snaps / M_PI + .5);
 319                                 angle = (M_PI / snaps) * sections;
 320                             }
 321                         }
 322                         sp_guide_set_normal(*guide, Geom::Point(1,0) * Geom::Rotate(angle + M_PI_2), false);
 323                         break;
 324                     }
 325                     case SP_DRAG_MOVE_ORIGIN:
 326                     {
 327                         sp_guide_moveto(*guide, motion_dt, false);
 328                         break;
 329                     }
 330                     case SP_DRAG_NONE:
 331                         g_assert_not_reached();
 332                         break;
 333                 }
 334                 moved = true;
 335                 desktop->set_coordinate_status(from_2geom(motion_dt));
 336                 desktop->setPosition(from_2geom(motion_dt));
 337
 338                 ret = TRUE;
 339             }
 340             break;
 341     case GDK_BUTTON_RELEASE:
 342             if (drag_type != SP_DRAG_NONE && event->button.button == 1) {
 343                 sp_event_context_discard_delayed_snap_event(desktop->event_context);
 344
 345                 if (moved) {
 346                     Geom::Point const event_w(event->button.x,
 347                                               event->button.y);
 348                     Geom::Point event_dt(desktop->w2d(event_w));
 349
 350                     SnapManager &m = desktop->namedview->snap_manager;
 351                     m.setup(desktop, true, NULL, NULL, guide);
 352                     if (drag_type == SP_DRAG_MOVE_ORIGIN) {
 353                         // If we snap in guideConstrainedSnap() below, then motion_dt will
 354                         // be forced to be on the guide. If we don't snap however, then
 355                         // the origin should still be constrained to the guide. So let's
 356                         // do that explicitly first:
 357                         Geom::Line line(guide->point_on_line, guide->angle());
 358                         Geom::Coord t = line.nearestPoint(event_dt);
 359                         event_dt = line.pointAt(t);
 360                         if (!(event->button.state & GDK_SHIFT_MASK)) {
 361                             m.guideConstrainedSnap(event_dt, *guide);
 362                         }
 363                     } else if (!((drag_type == SP_DRAG_ROTATE) && (event->motion.state & GDK_CONTROL_MASK))) {
 364                         // cannot use shift here to disable snapping, because we already use it for rotating the guide
 365                         m.guideFreeSnap(event_dt, guide->normal_to_line, drag_type);
 366                     }
 367
 368                     if (sp_canvas_world_pt_inside_window(item->canvas, event_w)) {
 369                         switch (drag_type) {
 370                             case SP_DRAG_TRANSLATE:
 371                             {
 372                                 sp_guide_moveto(*guide, event_dt, true);
 373                                 break;
 374                             }
 375                             case SP_DRAG_ROTATE:
 376                             {
 377                                 Geom::Point pt = event_dt - guide->point_on_line;
 378                                 double angle = std::atan2(pt[Geom::Y], pt[Geom::X]);
 379                                 if  (event->motion.state & GDK_CONTROL_MASK) {
 380                                     Inkscape::Preferences *prefs = Inkscape::Preferences::get();
 381                                     unsigned const snaps = abs(prefs->getInt("/options/rotationsnapsperpi/value", 12));
 382                                     if (snaps) {
 383                                         double sections = floor(angle * snaps / M_PI + .5);
 384                                         angle = (M_PI / snaps) * sections;
 385                                     }
 386                                 }
 387                                 sp_guide_set_normal(*guide, Geom::Point(1,0) * Geom::Rotate(angle + M_PI_2), true);
 388                                 break;
 389                             }
 390                             case SP_DRAG_MOVE_ORIGIN:
 391                             {
 392                                 sp_guide_moveto(*guide, event_dt, true);
 393                                 break;
 394                             }
 395                             case SP_DRAG_NONE:
 396                                 g_assert_not_reached();
 397                                 break;
 398                         }
 399                         sp_document_done(sp_desktop_document(desktop), SP_VERB_NONE,
 400                                          _("Move guide"));
 401                     } else {
 402                         /* Undo movement of any attached shapes. */
 403                         sp_guide_moveto(*guide, guide->point_on_line, false);
 404                         sp_guide_set_normal(*guide, guide->normal_to_line, false);
 405                         sp_guide_remove(guide);
 406                         sp_document_done(sp_desktop_document(desktop), SP_VERB_NONE,
 407                                      _("Delete guide"));
 408                     }
 409                     moved = false;
 410                     desktop->set_coordinate_status(from_2geom(event_dt));
 411                     desktop->setPosition (from_2geom(event_dt));
 412                 }
 413                 drag_type = SP_DRAG_NONE;
 414                 sp_canvas_item_ungrab(item, event->button.time);
 415                 ret=TRUE;
 416             }
 417     case GDK_ENTER_NOTIFY:
 418     {
 419             sp_guideline_set_color(SP_GUIDELINE(item), guide->hicolor);
 420
 421             // set move or rotate cursor
 422             Geom::Point const event_w(event->crossing.x, event->crossing.y);
 423             Geom::Point const event_dt(desktop->w2d(event_w));
 424
 425             if ((event->crossing.state & GDK_SHIFT_MASK) && (drag_type != SP_DRAG_MOVE_ORIGIN)) {
 426                 GdkCursor *guide_cursor;
 427                 guide_cursor = gdk_cursor_new (GDK_EXCHANGE);
 428                 gdk_window_set_cursor(GTK_WIDGET(sp_desktop_canvas(desktop))->window, guide_cursor);
 429                 gdk_cursor_unref(guide_cursor);
 430             }
 431
 432             char *guide_description = sp_guide_description(guide);
 433             desktop->guidesMessageContext()->setF(Inkscape::NORMAL_MESSAGE, _("<b>Guideline</b>: %s"), guide_description);
 434             g_free(guide_description);
 435             break;
 436     }
 437     case GDK_LEAVE_NOTIFY:
 438             sp_guideline_set_color(SP_GUIDELINE(item), guide->color);
 439
 440             // restore event context's cursor
 441             gdk_window_set_cursor(GTK_WIDGET(sp_desktop_canvas(desktop))->window, desktop->event_context->cursor);
 442
 443             desktop->guidesMessageContext()->clear();
 444             break;
 445         case GDK_KEY_PRESS:
 446             switch (get_group0_keyval (&event->key)) {
 447                 case GDK_Delete:
 448                 case GDK_KP_Delete:
 449                 case GDK_BackSpace:
 450                 {
 451                     SPDocument *doc = SP_OBJECT_DOCUMENT(guide);
 452                     sp_guide_remove(guide);
 453                     sp_document_done(doc, SP_VERB_NONE, _("Delete guide"));
 454                     ret = TRUE;
 455                     sp_event_context_discard_delayed_snap_event(desktop->event_context);
 456                     break;
 457                 }
 458                 case GDK_Shift_L:
 459                 case GDK_Shift_R:
 460                     if (drag_type != SP_DRAG_MOVE_ORIGIN) {
 461                         GdkCursor *guide_cursor;
 462                         guide_cursor = gdk_cursor_new (GDK_EXCHANGE);
 463                         gdk_window_set_cursor(GTK_WIDGET(sp_desktop_canvas(desktop))->window, guide_cursor);
 464                         gdk_cursor_unref(guide_cursor);
 465                         ret = TRUE;
 466                         break;
 467                     }
 468
 469                 default:
 470                     // do nothing;
 471                     break;
 472             }
 473             break;
 474         case GDK_KEY_RELEASE:
 475             switch (get_group0_keyval (&event->key)) {
 476                 case GDK_Shift_L:
 477                 case GDK_Shift_R:
 478                     GdkCursor *guide_cursor;
 479                     guide_cursor = gdk_cursor_new (GDK_EXCHANGE);
 480                     gdk_window_set_cursor(GTK_WIDGET(sp_desktop_canvas(desktop))->window, guide_cursor);
 481                     gdk_cursor_unref(guide_cursor);
 482                     break;
 483                 default:
 484                     // do nothing;
 485                     break;
 486             }
 487     default:
 488         break;
 489     }
 490
 491     return ret;
 492 }
 493
 494 //static std::map<GdkInputSource, std::string> switchMap;
 495 static std::map<std::string, int> toolToUse;
 496 static std::string lastName;
 497 static GdkInputSource lastType = GDK_SOURCE_MOUSE;
 498
 499 static void init_extended()
 500 {
 501     std::string avoidName = "pad";
 502     GList* devices = gdk_devices_list();
 503     if ( devices ) {
 504         for ( GList* curr = devices; curr; curr = g_list_next(curr) ) {
 505             GdkDevice* dev = reinterpret_cast<GdkDevice*>(curr->data);
 506             if ( dev->name
 507                  && (avoidName != dev->name)
 508                  && (dev->source != GDK_SOURCE_MOUSE) ) {
 509 //                 g_message("Adding '%s' as [%d]", dev->name, dev->source);
 510
 511                 // Set the initial tool for the device
 512                 switch ( dev->source ) {
 513                     case GDK_SOURCE_PEN:
 514                         toolToUse[dev->name] = TOOLS_CALLIGRAPHIC;
 515                         break;
 516                     case GDK_SOURCE_ERASER:
 517                         toolToUse[dev->name] = TOOLS_ERASER;
 518                         break;
 519                     case GDK_SOURCE_CURSOR:
 520                         toolToUse[dev->name] = TOOLS_SELECT;
 521                         break;
 522                     default:
 523                         ; // do not add
 524                 }
 525 //            } else if (dev->name) {
 526 //                 g_message("Skippn '%s' as [%s]", dev->name, dev->source);
 527             }
 528         }
 529     }
 530 }
 531
 532
 533 void snoop_extended(GdkEvent* event, SPDesktop *desktop)
 534 {
 535     GdkInputSource source = GDK_SOURCE_MOUSE;
 536     std::string name;
 537
 538     switch ( event->type ) {
 539         case GDK_MOTION_NOTIFY:
 540         {
 541             GdkEventMotion* event2 = reinterpret_cast<GdkEventMotion*>(event);
 542             if ( event2->device ) {
 543                 source = event2->device->source;
 544                 name = event2->device->name;
 545             }
 546         }
 547         break;
 548
 549         case GDK_BUTTON_PRESS:
 550         case GDK_2BUTTON_PRESS:
 551         case GDK_3BUTTON_PRESS:
 552         case GDK_BUTTON_RELEASE:
 553         {
 554             GdkEventButton* event2 = reinterpret_cast<GdkEventButton*>(event);
 555             if ( event2->device ) {
 556                 source = event2->device->source;
 557                 name = event2->device->name;
 558             }
 559         }
 560         break;
 561
 562         case GDK_SCROLL:
 563         {
 564             GdkEventScroll* event2 = reinterpret_cast<GdkEventScroll*>(event);
 565             if ( event2->device ) {
 566                 source = event2->device->source;
 567                 name = event2->device->name;
 568             }
 569         }
 570         break;
 571
 572         case GDK_PROXIMITY_IN:
 573         case GDK_PROXIMITY_OUT:
 574         {
 575             GdkEventProximity* event2 = reinterpret_cast<GdkEventProximity*>(event);
 576             if ( event2->device ) {
 577                 source = event2->device->source;
 578                 name = event2->device->name;
 579             }
 580         }
 581         break;
 582
 583         default:
 584             ;
 585     }
 586
 587     if (!name.empty()) {
 588         if ( lastType != source || lastName != name ) {
 589             // The device switched. See if it is one we 'count'
 590             //g_message("Changed device %s -> %s", lastName.c_str(), name.c_str());
 591             std::map<std::string, int>::iterator it = toolToUse.find(lastName);
 592             if (it != toolToUse.end()) {
 593                 // Save the tool currently selected for next time the input
 594                 // device shows up.
 595                 it->second = tools_active(desktop);
 596             }
 597
 598             it = toolToUse.find(name);
 599             if (it != toolToUse.end() ) {
 600                 tools_switch(desktop, it->second);
 601             }
 602
 603             lastName = name;
 604             lastType = source;
 605         }
 606     }
 607 }
 608
 609
 610
 611 /*
 612   Local Variables:
 613   mode:c++
 614   c-file-style:"stroustrup"
 615   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
 616   indent-tabs-mode:nil
 617   fill-column:99
 618   End:
 619 */
 620 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :
 621