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                 SnapManager &m = desktop->namedview->snap_manager;
 147                 m.setup(desktop);
 148                 // We only have a temporary guide which is not stored in our document yet.
 149                 // Because the guide snapper only looks in the document for guides to snap to,
 150                 // we don't have to worry about a guide snapping to itself here
 151                 m.guideFreeSnap(event_dt, normal, SP_DRAG_MOVE_ORIGIN);
 152
 153                 sp_guideline_set_position(SP_GUIDELINE(guide), from_2geom(event_dt));
 154                 desktop->set_coordinate_status(to_2geom(event_dt));
 155                 desktop->setPosition(to_2geom(event_dt));
 156             }
 157             break;
 158     case GDK_BUTTON_RELEASE:
 159             if (dragging && event->button.button == 1) {
 160                 sp_event_context_discard_delayed_snap_event(desktop->event_context);
 161
 162                 gdk_pointer_ungrab(event->button.time);
 163                 Geom::Point const event_w(sp_canvas_window_to_world(dtw->canvas, event_win));
 164                 Geom::Point event_dt(desktop->w2d(event_w));
 165
 166                 SnapManager &m = desktop->namedview->snap_manager;
 167                 m.setup(desktop);
 168                 // We only have a temporary guide which is not stored in our document yet.
 169                 // Because the guide snapper only looks in the document for guides to snap to,
 170                 // we don't have to worry about a guide snapping to itself here
 171                 m.guideFreeSnap(event_dt, normal, SP_DRAG_MOVE_ORIGIN);
 172
 173                 dragging = false;
 174
 175                 gtk_object_destroy(GTK_OBJECT(guide));
 176                 guide = NULL;
 177                 if ((horiz ? wy : wx) >= 0) {
 178                     Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
 179                     Inkscape::XML::Node *repr = xml_doc->createElement("sodipodi:guide");
 180                     sp_repr_set_point(repr, "orientation", normal);
 181                     sp_repr_set_point(repr, "position", from_2geom(event_dt));
 182                     SP_OBJECT_REPR(desktop->namedview)->appendChild(repr);
 183                     Inkscape::GC::release(repr);
 184                     sp_document_done(sp_desktop_document(desktop), SP_VERB_NONE,
 185                                      _("Create guide"));
 186                 }
 187                 desktop->set_coordinate_status(from_2geom(event_dt));
 188             }
 189     default:
 190             break;
 191     }
 192
 193     return FALSE;
 194 }
 195
 196 int sp_dt_hruler_event(GtkWidget *widget, GdkEvent *event, SPDesktopWidget *dtw)
 197 {
 198     if (event->type == GDK_MOTION_NOTIFY) {
 199         sp_event_context_snap_delay_handler(dtw->desktop->event_context, (gpointer) widget, (gpointer) dtw, (GdkEventMotion *)event, DelayedSnapEvent::GUIDE_HRULER);
 200     }
 201     return sp_dt_ruler_event(widget, event, dtw, true);
 202 }
 203
 204 int sp_dt_vruler_event(GtkWidget *widget, GdkEvent *event, SPDesktopWidget *dtw)
 205 {
 206     if (event->type == GDK_MOTION_NOTIFY) {
 207         sp_event_context_snap_delay_handler(dtw->desktop->event_context, (gpointer) widget, (gpointer) dtw, (GdkEventMotion *)event, DelayedSnapEvent::GUIDE_VRULER);
 208     }
 209     return sp_dt_ruler_event(widget, event, dtw, false);
 210 }
 211
 212 static Geom::Point drag_origin;
 213 static SPGuideDragType drag_type = SP_DRAG_NONE;
 214 //static bool reset_drag_origin = false; // when Ctrl is pressed while dragging, this is used to trigger resetting of the
 215 //                                       // drag origin to that location so that constrained movement is more intuitive
 216
 217 // Min distance from anchor to initiate rotation, measured in screenpixels
 218 #define tol 40.0
 219
 220 gint sp_dt_guide_event(SPCanvasItem *item, GdkEvent *event, gpointer data)
 221 {
 222     static bool moved = false;
 223     gint ret = FALSE;
 224
 225     SPGuide *guide = SP_GUIDE(data);
 226     SPDesktop *desktop = static_cast<SPDesktop*>(gtk_object_get_data(GTK_OBJECT(item->canvas), "SPDesktop"));
 227
 228     switch (event->type) {
 229     case GDK_2BUTTON_PRESS:
 230             if (event->button.button == 1) {
 231                 drag_type = SP_DRAG_NONE;
 232                 sp_event_context_discard_delayed_snap_event(desktop->event_context);
 233                 sp_canvas_item_ungrab(item, event->button.time);
 234                 Inkscape::UI::Dialogs::GuidelinePropertiesDialog::showDialog(guide, desktop);
 235                 ret = TRUE;
 236             }
 237             break;
 238     case GDK_BUTTON_PRESS:
 239             if (event->button.button == 1) {
 240                 Geom::Point const event_w(event->button.x, event->button.y);
 241                 Geom::Point const event_dt(desktop->w2d(event_w));
 242
 243                 // Due to the tolerance allowed when grabbing a guide, event_dt will generally
 244                 // be close to the guide but not just exactly on it. The drag origin calculated
 245                 // here must be exactly on the guide line though, otherwise
 246                 // small errors will occur once we snap, see
 247                 // https://bugs.launchpad.net/inkscape/+bug/333762
 248                 drag_origin = Geom::projection(event_dt, Geom::Line(guide->point_on_line, guide->angle()));
 249
 250                 if (event->button.state & GDK_SHIFT_MASK) {
 251                     // with shift we rotate the guide
 252                     drag_type = SP_DRAG_ROTATE;
 253                 } else {
 254                     if (event->button.state & GDK_CONTROL_MASK) {
 255                         drag_type = SP_DRAG_MOVE_ORIGIN;
 256                     } else {
 257                         drag_type = SP_DRAG_TRANSLATE;
 258                     }
 259                 }
 260
 261                 if (drag_type == SP_DRAG_ROTATE || drag_type == SP_DRAG_TRANSLATE) {
 262                     sp_canvas_item_grab(item,
 263                                         ( GDK_BUTTON_RELEASE_MASK  |
 264                                           GDK_BUTTON_PRESS_MASK    |
 265                                           GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK ),
 266                                         NULL,
 267                                         event->button.time);
 268                 }
 269                 ret = TRUE;
 270             }
 271             break;
 272         case GDK_MOTION_NOTIFY:
 273             if (drag_type != SP_DRAG_NONE) {
 274                 Geom::Point const motion_w(event->motion.x,
 275                                            event->motion.y);
 276                 Geom::Point motion_dt(desktop->w2d(motion_w));
 277
 278                 sp_event_context_snap_delay_handler(desktop->event_context, (gpointer) item, data, (GdkEventMotion *)event, DelayedSnapEvent::GUIDE_HANDLER);
 279
 280                 // This is for snapping while dragging existing guidelines. New guidelines,
 281                 // which are dragged off the ruler, are being snapped in sp_dt_ruler_event
 282                 SnapManager &m = desktop->namedview->snap_manager;
 283                 m.setup(desktop, true, NULL, NULL, guide);
 284                 if (drag_type == SP_DRAG_MOVE_ORIGIN) {
 285                     // If we snap in guideConstrainedSnap() below, then motion_dt will
 286                     // be forced to be on the guide. If we don't snap however, then
 287                     // the origin should still be constrained to the guide. So let's do
 288                     // that explicitly first:
 289
 290                     Geom::Line line(guide->point_on_line, guide->angle());
 291                     Geom::Coord t = line.nearestPoint(motion_dt);
 292                     motion_dt = line.pointAt(t);
 293                     m.guideConstrainedSnap(motion_dt, *guide);
 294                 } else {
 295                     m.guideFreeSnap(motion_dt, guide->normal_to_line, drag_type);
 296                 }
 297
 298                 switch (drag_type) {
 299                     case SP_DRAG_TRANSLATE:
 300                     {
 301                         sp_guide_moveto(*guide, motion_dt, false);
 302                         break;
 303                     }
 304                     case SP_DRAG_ROTATE:
 305                     {
 306                         Geom::Point pt = motion_dt - guide->point_on_line;
 307                         double angle = std::atan2(pt[Geom::Y], pt[Geom::X]);
 308                         if  (event->motion.state & GDK_CONTROL_MASK) {
 309                             Inkscape::Preferences *prefs = Inkscape::Preferences::get();
 310                             unsigned const snaps = abs(prefs->getInt("/options/rotationsnapsperpi/value", 12));
 311                             if (snaps) {
 312                                 double sections = floor(angle * snaps / M_PI + .5);
 313                                 angle = (M_PI / snaps) * sections;
 314                             }
 315                         }
 316                         sp_guide_set_normal(*guide, Geom::Point(1,0) * Geom::Rotate(angle + M_PI_2), false);
 317                         break;
 318                     }
 319                     case SP_DRAG_MOVE_ORIGIN:
 320                     {
 321                         sp_guide_moveto(*guide, motion_dt, false);
 322                         break;
 323                     }
 324                     case SP_DRAG_NONE:
 325                         g_assert_not_reached();
 326                         break;
 327                 }
 328                 moved = true;
 329                 desktop->set_coordinate_status(from_2geom(motion_dt));
 330                 desktop->setPosition(from_2geom(motion_dt));
 331
 332                 ret = TRUE;
 333             }
 334             break;
 335     case GDK_BUTTON_RELEASE:
 336             if (drag_type != SP_DRAG_NONE && event->button.button == 1) {
 337                 sp_event_context_discard_delayed_snap_event(desktop->event_context);
 338
 339                 if (moved) {
 340                     Geom::Point const event_w(event->button.x,
 341                                               event->button.y);
 342                     Geom::Point event_dt(desktop->w2d(event_w));
 343
 344                     SnapManager &m = desktop->namedview->snap_manager;
 345                     m.setup(desktop, true, NULL, NULL, guide);
 346                     if (drag_type == SP_DRAG_MOVE_ORIGIN) {
 347                         // If we snap in guideConstrainedSnap() below, then motion_dt will
 348                         // be forced to be on the guide. If we don't snap however, then
 349                         // the origin should still be constrained to the guide. So let's
 350                         // do that explicitly first:
 351                         Geom::Line line(guide->point_on_line, guide->angle());
 352                         Geom::Coord t = line.nearestPoint(event_dt);
 353                         event_dt = line.pointAt(t);
 354                         m.guideConstrainedSnap(event_dt, *guide);
 355                     } else {
 356                         m.guideFreeSnap(event_dt, guide->normal_to_line, drag_type);
 357                     }
 358
 359                     if (sp_canvas_world_pt_inside_window(item->canvas, event_w)) {
 360                         switch (drag_type) {
 361                             case SP_DRAG_TRANSLATE:
 362                             {
 363                                 sp_guide_moveto(*guide, event_dt, true);
 364                                 break;
 365                             }
 366                             case SP_DRAG_ROTATE:
 367                             {
 368                                 Geom::Point pt = event_dt - guide->point_on_line;
 369                                 double angle = std::atan2(pt[Geom::Y], pt[Geom::X]);
 370                                 if  (event->motion.state & GDK_CONTROL_MASK) {
 371                                     Inkscape::Preferences *prefs = Inkscape::Preferences::get();
 372                                     unsigned const snaps = abs(prefs->getInt("/options/rotationsnapsperpi/value", 12));
 373                                     if (snaps) {
 374                                         double sections = floor(angle * snaps / M_PI + .5);
 375                                         angle = (M_PI / snaps) * sections;
 376                                     }
 377                                 }
 378                                 sp_guide_set_normal(*guide, Geom::Point(1,0) * Geom::Rotate(angle + M_PI_2), true);
 379                                 break;
 380                             }
 381                             case SP_DRAG_MOVE_ORIGIN:
 382                             {
 383                                 sp_guide_moveto(*guide, event_dt, true);
 384                                 break;
 385                             }
 386                             case SP_DRAG_NONE:
 387                                 g_assert_not_reached();
 388                                 break;
 389                         }
 390                         sp_document_done(sp_desktop_document(desktop), SP_VERB_NONE,
 391                                          _("Move guide"));
 392                     } else {
 393                         /* Undo movement of any attached shapes. */
 394                         sp_guide_moveto(*guide, guide->point_on_line, false);
 395                         sp_guide_set_normal(*guide, guide->normal_to_line, false);
 396                         sp_guide_remove(guide);
 397                         sp_document_done(sp_desktop_document(desktop), SP_VERB_NONE,
 398                                      _("Delete guide"));
 399                     }
 400                     moved = false;
 401                     desktop->set_coordinate_status(from_2geom(event_dt));
 402                     desktop->setPosition (from_2geom(event_dt));
 403                 }
 404                 drag_type = SP_DRAG_NONE;
 405                 sp_canvas_item_ungrab(item, event->button.time);
 406                 ret=TRUE;
 407             }
 408     case GDK_ENTER_NOTIFY:
 409     {
 410             sp_guideline_set_color(SP_GUIDELINE(item), guide->hicolor);
 411
 412             // set move or rotate cursor
 413             Geom::Point const event_w(event->crossing.x, event->crossing.y);
 414             Geom::Point const event_dt(desktop->w2d(event_w));
 415
 416             if (event->crossing.state & GDK_SHIFT_MASK) {
 417                 GdkCursor *guide_cursor;
 418                 guide_cursor = gdk_cursor_new (GDK_EXCHANGE);
 419                 gdk_window_set_cursor(GTK_WIDGET(sp_desktop_canvas(desktop))->window, guide_cursor);
 420                 gdk_cursor_unref(guide_cursor);
 421             }
 422
 423             char *guide_description = sp_guide_description(guide);
 424             desktop->guidesMessageContext()->setF(Inkscape::NORMAL_MESSAGE, _("<b>Guideline</b>: %s"), guide_description);
 425             g_free(guide_description);
 426             break;
 427     }
 428     case GDK_LEAVE_NOTIFY:
 429             sp_guideline_set_color(SP_GUIDELINE(item), guide->color);
 430
 431             // restore event context's cursor
 432             gdk_window_set_cursor(GTK_WIDGET(sp_desktop_canvas(desktop))->window, desktop->event_context->cursor);
 433
 434             desktop->guidesMessageContext()->clear();
 435             break;
 436         case GDK_KEY_PRESS:
 437             switch (get_group0_keyval (&event->key)) {
 438                 case GDK_Delete:
 439                 case GDK_KP_Delete:
 440                 case GDK_BackSpace:
 441                 {
 442                     SPDocument *doc = SP_OBJECT_DOCUMENT(guide);
 443                     sp_guide_remove(guide);
 444                     sp_document_done(doc, SP_VERB_NONE, _("Delete guide"));
 445                     ret = TRUE;
 446                     sp_event_context_discard_delayed_snap_event(desktop->event_context);
 447                     break;
 448                 }
 449                 case GDK_Shift_L:
 450                 case GDK_Shift_R:
 451                     GdkCursor *guide_cursor;
 452                     guide_cursor = gdk_cursor_new (GDK_EXCHANGE);
 453                     gdk_window_set_cursor(GTK_WIDGET(sp_desktop_canvas(desktop))->window, guide_cursor);
 454                     gdk_cursor_unref(guide_cursor);
 455                     ret = TRUE;
 456                 default:
 457                     // do nothing;
 458                     break;
 459             }
 460             break;
 461         case GDK_KEY_RELEASE:
 462             switch (get_group0_keyval (&event->key)) {
 463                 case GDK_Shift_L:
 464                 case GDK_Shift_R:
 465                     GdkCursor *guide_cursor;
 466                     guide_cursor = gdk_cursor_new (GDK_EXCHANGE);
 467                     gdk_window_set_cursor(GTK_WIDGET(sp_desktop_canvas(desktop))->window, guide_cursor);
 468                     gdk_cursor_unref(guide_cursor);
 469                     break;
 470                 default:
 471                     // do nothing;
 472                     break;
 473             }
 474     default:
 475         break;
 476     }
 477
 478     return ret;
 479 }
 480
 481 //static std::map<GdkInputSource, std::string> switchMap;
 482 static std::map<std::string, int> toolToUse;
 483 static std::string lastName;
 484 static GdkInputSource lastType = GDK_SOURCE_MOUSE;
 485
 486 static void init_extended()
 487 {
 488     std::string avoidName = "pad";
 489     GList* devices = gdk_devices_list();
 490     if ( devices ) {
 491         for ( GList* curr = devices; curr; curr = g_list_next(curr) ) {
 492             GdkDevice* dev = reinterpret_cast<GdkDevice*>(curr->data);
 493             if ( dev->name
 494                  && (avoidName != dev->name)
 495                  && (dev->source != GDK_SOURCE_MOUSE) ) {
 496 //                 g_message("Adding '%s' as [%d]", dev->name, dev->source);
 497
 498                 // Set the initial tool for the device
 499                 switch ( dev->source ) {
 500                     case GDK_SOURCE_PEN:
 501                         toolToUse[dev->name] = TOOLS_CALLIGRAPHIC;
 502                         break;
 503                     case GDK_SOURCE_ERASER:
 504                         toolToUse[dev->name] = TOOLS_ERASER;
 505                         break;
 506                     case GDK_SOURCE_CURSOR:
 507                         toolToUse[dev->name] = TOOLS_SELECT;
 508                         break;
 509                     default:
 510                         ; // do not add
 511                 }
 512 //            } else if (dev->name) {
 513 //                 g_message("Skippn '%s' as [%s]", dev->name, dev->source);
 514             }
 515         }
 516     }
 517 }
 518
 519
 520 void snoop_extended(GdkEvent* event, SPDesktop *desktop)
 521 {
 522     GdkInputSource source = GDK_SOURCE_MOUSE;
 523     std::string name;
 524
 525     switch ( event->type ) {
 526         case GDK_MOTION_NOTIFY:
 527         {
 528             GdkEventMotion* event2 = reinterpret_cast<GdkEventMotion*>(event);
 529             if ( event2->device ) {
 530                 source = event2->device->source;
 531                 name = event2->device->name;
 532             }
 533         }
 534         break;
 535
 536         case GDK_BUTTON_PRESS:
 537         case GDK_2BUTTON_PRESS:
 538         case GDK_3BUTTON_PRESS:
 539         case GDK_BUTTON_RELEASE:
 540         {
 541             GdkEventButton* event2 = reinterpret_cast<GdkEventButton*>(event);
 542             if ( event2->device ) {
 543                 source = event2->device->source;
 544                 name = event2->device->name;
 545             }
 546         }
 547         break;
 548
 549         case GDK_SCROLL:
 550         {
 551             GdkEventScroll* event2 = reinterpret_cast<GdkEventScroll*>(event);
 552             if ( event2->device ) {
 553                 source = event2->device->source;
 554                 name = event2->device->name;
 555             }
 556         }
 557         break;
 558
 559         case GDK_PROXIMITY_IN:
 560         case GDK_PROXIMITY_OUT:
 561         {
 562             GdkEventProximity* event2 = reinterpret_cast<GdkEventProximity*>(event);
 563             if ( event2->device ) {
 564                 source = event2->device->source;
 565                 name = event2->device->name;
 566             }
 567         }
 568         break;
 569
 570         default:
 571             ;
 572     }
 573
 574     if (!name.empty()) {
 575         if ( lastType != source || lastName != name ) {
 576             // The device switched. See if it is one we 'count'
 577             //g_message("Changed device %s -> %s", lastName.c_str(), name.c_str());
 578             std::map<std::string, int>::iterator it = toolToUse.find(lastName);
 579             if (it != toolToUse.end()) {
 580                 // Save the tool currently selected for next time the input
 581                 // device shows up.
 582                 it->second = tools_active(desktop);
 583             }
 584
 585             it = toolToUse.find(name);
 586             if (it != toolToUse.end() ) {
 587                 tools_switch(desktop, it->second);
 588             }
 589
 590             lastName = name;
 591             lastType = source;
 592         }
 593     }
 594 }
 595
 596
 597
 598 /*
 599   Local Variables:
 600   mode:c++
 601   c-file-style:"stroustrup"
 602   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
 603   indent-tabs-mode:nil
 604   fill-column:99
 605   End:
 606 */
 607 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :
 608