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                                 desktop->namedview->setGuides(true);
  99
 100                 // calculate the normal of the guidelines when dragged from the edges of rulers.
 101                 Geom::Point normal_bl_to_tr(-1.,1.); //bottomleft to topright
 102                 Geom::Point normal_tr_to_bl(1.,1.); //topright to bottomleft
 103                 normal_bl_to_tr.normalize();
 104                 normal_tr_to_bl.normalize();
 105                 Inkscape::CanvasGrid * grid = sp_namedview_get_first_enabled_grid(desktop->namedview);
 106                 if ( grid && grid->getGridType() == Inkscape::GRID_AXONOMETRIC ) {
 107                     Inkscape::CanvasAxonomGrid *axonomgrid = dynamic_cast<Inkscape::CanvasAxonomGrid *>(grid);
 108                     if (event->button.state & GDK_CONTROL_MASK) {
 109                         // guidelines normal to gridlines
 110                         normal_bl_to_tr = Geom::Point::polar(-axonomgrid->angle_rad[0], 1.0);
 111                         normal_tr_to_bl = Geom::Point::polar(axonomgrid->angle_rad[2], 1.0);
 112                     } else {
 113                         normal_bl_to_tr = rot90(Geom::Point::polar(axonomgrid->angle_rad[2], 1.0));
 114                         normal_tr_to_bl = rot90(Geom::Point::polar(-axonomgrid->angle_rad[0], 1.0));
 115                     }
 116                 }
 117                 if (horiz) {
 118                     if (wx < 50) {
 119                         normal = normal_bl_to_tr;
 120                     } else if (wx > width - 50) {
 121                         normal = normal_tr_to_bl;
 122                     } else {
 123                         normal = Geom::Point(0.,1.);
 124                     }
 125                 } else {
 126                     if (wy < 50) {
 127                         normal = normal_bl_to_tr;
 128                     } else if (wy > height - 50) {
 129                         normal = normal_tr_to_bl;
 130                     } else {
 131                         normal = Geom::Point(1.,0.);
 132                     }
 133                 }
 134
 135                 guide = sp_guideline_new(desktop->guides, event_dt, normal);
 136                 sp_guideline_set_color(SP_GUIDELINE(guide), desktop->namedview->guidehicolor);
 137                 gdk_pointer_grab(widget->window, FALSE,
 138                                  (GdkEventMask)(GDK_BUTTON_RELEASE_MASK | GDK_POINTER_MOTION_MASK ),
 139                                  NULL, NULL,
 140                                  event->button.time);
 141             }
 142             break;
 143     case GDK_MOTION_NOTIFY:
 144             if (dragging) {
 145                 Geom::Point const event_w(sp_canvas_window_to_world(dtw->canvas, event_win));
 146                 Geom::Point event_dt(desktop->w2d(event_w));
 147
 148                 if (!(event->motion.state & GDK_SHIFT_MASK)) {
 149                     SnapManager &m = desktop->namedview->snap_manager;
 150                     m.setup(desktop);
 151                     // We only have a temporary guide which is not stored in our document yet.
 152                     // Because the guide snapper only looks in the document for guides to snap to,
 153                     // we don't have to worry about a guide snapping to itself here
 154                     m.guideFreeSnap(event_dt, normal, SP_DRAG_MOVE_ORIGIN);
 155                 }
 156
 157                 sp_guideline_set_position(SP_GUIDELINE(guide), from_2geom(event_dt));
 158                 desktop->set_coordinate_status(to_2geom(event_dt));
 159                 desktop->setPosition(to_2geom(event_dt));
 160             }
 161             break;
 162     case GDK_BUTTON_RELEASE:
 163             if (dragging && event->button.button == 1) {
 164                 sp_event_context_discard_delayed_snap_event(desktop->event_context);
 165
 166                 gdk_pointer_ungrab(event->button.time);
 167                 Geom::Point const event_w(sp_canvas_window_to_world(dtw->canvas, event_win));
 168                 Geom::Point event_dt(desktop->w2d(event_w));
 169
 170                 if (!(event->button.state & GDK_SHIFT_MASK)) {
 171                     SnapManager &m = desktop->namedview->snap_manager;
 172                     m.setup(desktop);
 173                     // We only have a temporary guide which is not stored in our document yet.
 174                     // Because the guide snapper only looks in the document for guides to snap to,
 175                     // we don't have to worry about a guide snapping to itself here
 176                     m.guideFreeSnap(event_dt, normal, SP_DRAG_MOVE_ORIGIN);
 177                 }
 178
 179                 dragging = false;
 180
 181                 gtk_object_destroy(GTK_OBJECT(guide));
 182                 guide = NULL;
 183                 if ((horiz ? wy : wx) >= 0) {
 184                     Inkscape::XML::Document *xml_doc = sp_document_repr_doc(desktop->doc());
 185                     Inkscape::XML::Node *repr = xml_doc->createElement("sodipodi:guide");
 186                     sp_repr_set_point(repr, "orientation", normal);
 187                     sp_repr_set_point(repr, "position", from_2geom(event_dt));
 188                     //SP_OBJECT_REPR(desktop->namedview)->appendChild(repr);
 189                                         desktop->namedview->appendChild(repr);
 190                     Inkscape::GC::release(repr);
 191                     SPDocumentUndo::done(sp_desktop_document(desktop), SP_VERB_NONE,
 192                                      _("Create guide"));
 193                 }
 194                 desktop->set_coordinate_status(from_2geom(event_dt));
 195             }
 196     default:
 197             break;
 198     }
 199
 200     return FALSE;
 201 }
 202
 203 int sp_dt_hruler_event(GtkWidget *widget, GdkEvent *event, SPDesktopWidget *dtw)
 204 {
 205     if (event->type == GDK_MOTION_NOTIFY) {
 206         sp_event_context_snap_delay_handler(dtw->desktop->event_context, (gpointer) widget, (gpointer) dtw, (GdkEventMotion *)event, DelayedSnapEvent::GUIDE_HRULER);
 207     }
 208     return sp_dt_ruler_event(widget, event, dtw, true);
 209 }
 210
 211 int sp_dt_vruler_event(GtkWidget *widget, GdkEvent *event, SPDesktopWidget *dtw)
 212 {
 213     if (event->type == GDK_MOTION_NOTIFY) {
 214         sp_event_context_snap_delay_handler(dtw->desktop->event_context, (gpointer) widget, (gpointer) dtw, (GdkEventMotion *)event, DelayedSnapEvent::GUIDE_VRULER);
 215     }
 216     return sp_dt_ruler_event(widget, event, dtw, false);
 217 }
 218
 219 static Geom::Point drag_origin;
 220 static SPGuideDragType drag_type = SP_DRAG_NONE;
 221 //static bool reset_drag_origin = false; // when Ctrl is pressed while dragging, this is used to trigger resetting of the
 222 //                                       // drag origin to that location so that constrained movement is more intuitive
 223
 224 // Min distance from anchor to initiate rotation, measured in screenpixels
 225 #define tol 40.0
 226
 227 gint sp_dt_guide_event(SPCanvasItem *item, GdkEvent *event, gpointer data)
 228 {
 229     static bool moved = false;
 230     gint ret = FALSE;
 231
 232     SPGuide *guide = SP_GUIDE(data);
 233     SPDesktop *desktop = static_cast<SPDesktop*>(gtk_object_get_data(GTK_OBJECT(item->canvas), "SPDesktop"));
 234
 235     switch (event->type) {
 236     case GDK_2BUTTON_PRESS:
 237             if (event->button.button == 1) {
 238                 drag_type = SP_DRAG_NONE;
 239                 sp_event_context_discard_delayed_snap_event(desktop->event_context);
 240                 sp_canvas_item_ungrab(item, event->button.time);
 241                 Inkscape::UI::Dialogs::GuidelinePropertiesDialog::showDialog(guide, desktop);
 242                 ret = TRUE;
 243             }
 244             break;
 245     case GDK_BUTTON_PRESS:
 246             if (event->button.button == 1) {
 247                 Geom::Point const event_w(event->button.x, event->button.y);
 248                 Geom::Point const event_dt(desktop->w2d(event_w));
 249
 250                 // Due to the tolerance allowed when grabbing a guide, event_dt will generally
 251                 // be close to the guide but not just exactly on it. The drag origin calculated
 252                 // here must be exactly on the guide line though, otherwise
 253                 // small errors will occur once we snap, see
 254                 // https://bugs.launchpad.net/inkscape/+bug/333762
 255                 drag_origin = Geom::projection(event_dt, Geom::Line(guide->point_on_line, guide->angle()));
 256
 257                 if (event->button.state & GDK_SHIFT_MASK) {
 258                     // with shift we rotate the guide
 259                     drag_type = SP_DRAG_ROTATE;
 260                 } else {
 261                     if (event->button.state & GDK_CONTROL_MASK) {
 262                         drag_type = SP_DRAG_MOVE_ORIGIN;
 263                     } else {
 264                         drag_type = SP_DRAG_TRANSLATE;
 265                     }
 266                 }
 267
 268                 if (drag_type == SP_DRAG_ROTATE || drag_type == SP_DRAG_TRANSLATE) {
 269                     sp_canvas_item_grab(item,
 270                                         ( GDK_BUTTON_RELEASE_MASK  |
 271                                           GDK_BUTTON_PRESS_MASK    |
 272                                           GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK ),
 273                                         NULL,
 274                                         event->button.time);
 275                 }
 276                 ret = TRUE;
 277             }
 278             break;
 279         case GDK_MOTION_NOTIFY:
 280             if (drag_type != SP_DRAG_NONE) {
 281                 Geom::Point const motion_w(event->motion.x,
 282                                            event->motion.y);
 283                 Geom::Point motion_dt(desktop->w2d(motion_w));
 284
 285                 sp_event_context_snap_delay_handler(desktop->event_context, (gpointer) item, data, (GdkEventMotion *)event, DelayedSnapEvent::GUIDE_HANDLER);
 286
 287                 // This is for snapping while dragging existing guidelines. New guidelines,
 288                 // which are dragged off the ruler, are being snapped in sp_dt_ruler_event
 289                 SnapManager &m = desktop->namedview->snap_manager;
 290                 m.setup(desktop, true, NULL, NULL, guide);
 291                 if (drag_type == SP_DRAG_MOVE_ORIGIN) {
 292                     // If we snap in guideConstrainedSnap() below, then motion_dt will
 293                     // be forced to be on the guide. If we don't snap however, then
 294                     // the origin should still be constrained to the guide. So let's do
 295                     // that explicitly first:
 296                     Geom::Line line(guide->point_on_line, guide->angle());
 297                     Geom::Coord t = line.nearestPoint(motion_dt);
 298                     motion_dt = line.pointAt(t);
 299                     if (!(event->motion.state & GDK_SHIFT_MASK)) {
 300                         m.guideConstrainedSnap(motion_dt, *guide);
 301                     }
 302                 } else if (!(event->motion.state & GDK_SHIFT_MASK)) {
 303                     if (!((drag_type == SP_DRAG_ROTATE) && (event->motion.state & GDK_CONTROL_MASK))) {
 304                         m.guideFreeSnap(motion_dt, guide->normal_to_line, drag_type);
 305                     }
 306                 }
 307
 308                 switch (drag_type) {
 309                     case SP_DRAG_TRANSLATE:
 310                     {
 311                         sp_guide_moveto(*guide, motion_dt, false);
 312                         break;
 313                     }
 314                     case SP_DRAG_ROTATE:
 315                     {
 316                         Geom::Point pt = motion_dt - guide->point_on_line;
 317                         double angle = std::atan2(pt[Geom::Y], pt[Geom::X]);
 318                         if (event->motion.state & GDK_CONTROL_MASK) {
 319                             Inkscape::Preferences *prefs = Inkscape::Preferences::get();
 320                             unsigned const snaps = abs(prefs->getInt("/options/rotationsnapsperpi/value", 12));
 321                             if (snaps) {
 322                                 double sections = floor(angle * snaps / M_PI + .5);
 323                                 angle = (M_PI / snaps) * sections;
 324                             }
 325                         }
 326                         sp_guide_set_normal(*guide, Geom::Point(1,0) * Geom::Rotate(angle + M_PI_2), false);
 327                         break;
 328                     }
 329                     case SP_DRAG_MOVE_ORIGIN:
 330                     {
 331                         sp_guide_moveto(*guide, motion_dt, false);
 332                         break;
 333                     }
 334                     case SP_DRAG_NONE:
 335                         g_assert_not_reached();
 336                         break;
 337                 }
 338                 moved = true;
 339                 desktop->set_coordinate_status(from_2geom(motion_dt));
 340                 desktop->setPosition(from_2geom(motion_dt));
 341
 342                 ret = TRUE;
 343             }
 344             break;
 345     case GDK_BUTTON_RELEASE:
 346             if (drag_type != SP_DRAG_NONE && event->button.button == 1) {
 347                 sp_event_context_discard_delayed_snap_event(desktop->event_context);
 348
 349                 if (moved) {
 350                     Geom::Point const event_w(event->button.x,
 351                                               event->button.y);
 352                     Geom::Point event_dt(desktop->w2d(event_w));
 353
 354                     SnapManager &m = desktop->namedview->snap_manager;
 355                     m.setup(desktop, true, NULL, NULL, guide);
 356                     if (drag_type == SP_DRAG_MOVE_ORIGIN) {
 357                         // If we snap in guideConstrainedSnap() below, then motion_dt will
 358                         // be forced to be on the guide. If we don't snap however, then
 359                         // the origin should still be constrained to the guide. So let's
 360                         // do that explicitly first:
 361                         Geom::Line line(guide->point_on_line, guide->angle());
 362                         Geom::Coord t = line.nearestPoint(event_dt);
 363                         event_dt = line.pointAt(t);
 364                         if (!(event->button.state & GDK_SHIFT_MASK)) {
 365                             m.guideConstrainedSnap(event_dt, *guide);
 366                         }
 367                     } else if (!(event->button.state & GDK_SHIFT_MASK)) {
 368                         if (!((drag_type == SP_DRAG_ROTATE) && (event->motion.state & GDK_CONTROL_MASK))) {
 369                             m.guideFreeSnap(event_dt, guide->normal_to_line, drag_type);
 370                         }
 371                     }
 372
 373                     if (sp_canvas_world_pt_inside_window(item->canvas, event_w)) {
 374                         switch (drag_type) {
 375                             case SP_DRAG_TRANSLATE:
 376                             {
 377                                 sp_guide_moveto(*guide, event_dt, true);
 378                                 break;
 379                             }
 380                             case SP_DRAG_ROTATE:
 381                             {
 382                                 Geom::Point pt = event_dt - guide->point_on_line;
 383                                 double angle = std::atan2(pt[Geom::Y], pt[Geom::X]);
 384                                 if  (event->motion.state & GDK_CONTROL_MASK) {
 385                                     Inkscape::Preferences *prefs = Inkscape::Preferences::get();
 386                                     unsigned const snaps = abs(prefs->getInt("/options/rotationsnapsperpi/value", 12));
 387                                     if (snaps) {
 388                                         double sections = floor(angle * snaps / M_PI + .5);
 389                                         angle = (M_PI / snaps) * sections;
 390                                     }
 391                                 }
 392                                 sp_guide_set_normal(*guide, Geom::Point(1,0) * Geom::Rotate(angle + M_PI_2), true);
 393                                 break;
 394                             }
 395                             case SP_DRAG_MOVE_ORIGIN:
 396                             {
 397                                 sp_guide_moveto(*guide, event_dt, true);
 398                                 break;
 399                             }
 400                             case SP_DRAG_NONE:
 401                                 g_assert_not_reached();
 402                                 break;
 403                         }
 404                         SPDocumentUndo::done(sp_desktop_document(desktop), SP_VERB_NONE,
 405                                          _("Move guide"));
 406                     } else {
 407                         /* Undo movement of any attached shapes. */
 408                         sp_guide_moveto(*guide, guide->point_on_line, false);
 409                         sp_guide_set_normal(*guide, guide->normal_to_line, false);
 410                         sp_guide_remove(guide);
 411                         SPDocumentUndo::done(sp_desktop_document(desktop), SP_VERB_NONE,
 412                                      _("Delete guide"));
 413                     }
 414                     moved = false;
 415                     desktop->set_coordinate_status(from_2geom(event_dt));
 416                     desktop->setPosition (from_2geom(event_dt));
 417                 }
 418                 drag_type = SP_DRAG_NONE;
 419                 sp_canvas_item_ungrab(item, event->button.time);
 420                 ret=TRUE;
 421             }
 422     case GDK_ENTER_NOTIFY:
 423     {
 424             sp_guideline_set_color(SP_GUIDELINE(item), guide->hicolor);
 425
 426             // set move or rotate cursor
 427             Geom::Point const event_w(event->crossing.x, event->crossing.y);
 428             Geom::Point const event_dt(desktop->w2d(event_w));
 429
 430             if ((event->crossing.state & GDK_SHIFT_MASK) && (drag_type != SP_DRAG_MOVE_ORIGIN)) {
 431                 GdkCursor *guide_cursor;
 432                 guide_cursor = gdk_cursor_new (GDK_EXCHANGE);
 433                 gdk_window_set_cursor(GTK_WIDGET(sp_desktop_canvas(desktop))->window, guide_cursor);
 434                 gdk_cursor_unref(guide_cursor);
 435             }
 436
 437             char *guide_description = sp_guide_description(guide);
 438             desktop->guidesMessageContext()->setF(Inkscape::NORMAL_MESSAGE, _("<b>Guideline</b>: %s"), guide_description);
 439             g_free(guide_description);
 440             break;
 441     }
 442     case GDK_LEAVE_NOTIFY:
 443             sp_guideline_set_color(SP_GUIDELINE(item), guide->color);
 444
 445             // restore event context's cursor
 446             gdk_window_set_cursor(GTK_WIDGET(sp_desktop_canvas(desktop))->window, desktop->event_context->cursor);
 447
 448             desktop->guidesMessageContext()->clear();
 449             break;
 450         case GDK_KEY_PRESS:
 451             switch (get_group0_keyval (&event->key)) {
 452                 case GDK_Delete:
 453                 case GDK_KP_Delete:
 454                 case GDK_BackSpace:
 455                 {
 456                     SPDocument *doc = SP_OBJECT_DOCUMENT(guide);
 457                     sp_guide_remove(guide);
 458                     SPDocumentUndo::done(doc, SP_VERB_NONE, _("Delete guide"));
 459                     ret = TRUE;
 460                     sp_event_context_discard_delayed_snap_event(desktop->event_context);
 461                     break;
 462                 }
 463                 case GDK_Shift_L:
 464                 case GDK_Shift_R:
 465                     if (drag_type != SP_DRAG_MOVE_ORIGIN) {
 466                         GdkCursor *guide_cursor;
 467                         guide_cursor = gdk_cursor_new (GDK_EXCHANGE);
 468                         gdk_window_set_cursor(GTK_WIDGET(sp_desktop_canvas(desktop))->window, guide_cursor);
 469                         gdk_cursor_unref(guide_cursor);
 470                         ret = TRUE;
 471                         break;
 472                     }
 473
 474                 default:
 475                     // do nothing;
 476                     break;
 477             }
 478             break;
 479         case GDK_KEY_RELEASE:
 480             switch (get_group0_keyval (&event->key)) {
 481                 case GDK_Shift_L:
 482                 case GDK_Shift_R:
 483                     GdkCursor *guide_cursor;
 484                     guide_cursor = gdk_cursor_new (GDK_EXCHANGE);
 485                     gdk_window_set_cursor(GTK_WIDGET(sp_desktop_canvas(desktop))->window, guide_cursor);
 486                     gdk_cursor_unref(guide_cursor);
 487                     break;
 488                 default:
 489                     // do nothing;
 490                     break;
 491             }
 492     default:
 493         break;
 494     }
 495
 496     return ret;
 497 }
 498
 499 //static std::map<GdkInputSource, std::string> switchMap;
 500 static std::map<std::string, int> toolToUse;
 501 static std::string lastName;
 502 static GdkInputSource lastType = GDK_SOURCE_MOUSE;
 503
 504 static void init_extended()
 505 {
 506     std::string avoidName = "pad";
 507     GList* devices = gdk_devices_list();
 508     if ( devices ) {
 509         for ( GList* curr = devices; curr; curr = g_list_next(curr) ) {
 510             GdkDevice* dev = reinterpret_cast<GdkDevice*>(curr->data);
 511             if ( dev->name
 512                  && (avoidName != dev->name)
 513                  && (dev->source != GDK_SOURCE_MOUSE) ) {
 514 //                 g_message("Adding '%s' as [%d]", dev->name, dev->source);
 515
 516                 // Set the initial tool for the device
 517                 switch ( dev->source ) {
 518                     case GDK_SOURCE_PEN:
 519                         toolToUse[dev->name] = TOOLS_CALLIGRAPHIC;
 520                         break;
 521                     case GDK_SOURCE_ERASER:
 522                         toolToUse[dev->name] = TOOLS_ERASER;
 523                         break;
 524                     case GDK_SOURCE_CURSOR:
 525                         toolToUse[dev->name] = TOOLS_SELECT;
 526                         break;
 527                     default:
 528                         ; // do not add
 529                 }
 530 //            } else if (dev->name) {
 531 //                 g_message("Skippn '%s' as [%s]", dev->name, dev->source);
 532             }
 533         }
 534     }
 535 }
 536
 537
 538 void snoop_extended(GdkEvent* event, SPDesktop *desktop)
 539 {
 540     GdkInputSource source = GDK_SOURCE_MOUSE;
 541     std::string name;
 542
 543     switch ( event->type ) {
 544         case GDK_MOTION_NOTIFY:
 545         {
 546             GdkEventMotion* event2 = reinterpret_cast<GdkEventMotion*>(event);
 547             if ( event2->device ) {
 548                 source = event2->device->source;
 549                 name = event2->device->name;
 550             }
 551         }
 552         break;
 553
 554         case GDK_BUTTON_PRESS:
 555         case GDK_2BUTTON_PRESS:
 556         case GDK_3BUTTON_PRESS:
 557         case GDK_BUTTON_RELEASE:
 558         {
 559             GdkEventButton* event2 = reinterpret_cast<GdkEventButton*>(event);
 560             if ( event2->device ) {
 561                 source = event2->device->source;
 562                 name = event2->device->name;
 563             }
 564         }
 565         break;
 566
 567         case GDK_SCROLL:
 568         {
 569             GdkEventScroll* event2 = reinterpret_cast<GdkEventScroll*>(event);
 570             if ( event2->device ) {
 571                 source = event2->device->source;
 572                 name = event2->device->name;
 573             }
 574         }
 575         break;
 576
 577         case GDK_PROXIMITY_IN:
 578         case GDK_PROXIMITY_OUT:
 579         {
 580             GdkEventProximity* event2 = reinterpret_cast<GdkEventProximity*>(event);
 581             if ( event2->device ) {
 582                 source = event2->device->source;
 583                 name = event2->device->name;
 584             }
 585         }
 586         break;
 587
 588         default:
 589             ;
 590     }
 591
 592     if (!name.empty()) {
 593         if ( lastType != source || lastName != name ) {
 594             // The device switched. See if it is one we 'count'
 595             //g_message("Changed device %s -> %s", lastName.c_str(), name.c_str());
 596             std::map<std::string, int>::iterator it = toolToUse.find(lastName);
 597             if (it != toolToUse.end()) {
 598                 // Save the tool currently selected for next time the input
 599                 // device shows up.
 600                 it->second = tools_active(desktop);
 601             }
 602
 603             it = toolToUse.find(name);
 604             if (it != toolToUse.end() ) {
 605                 tools_switch(desktop, it->second);
 606             }
 607
 608             lastName = name;
 609             lastType = source;
 610         }
 611     }
 612 }
 613
 614
 615
 616 /*
 617   Local Variables:
 618   mode:c++
 619   c-file-style:"stroustrup"
 620   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
 621   indent-tabs-mode:nil
 622   fill-column:99
 623   End:
 624 */
 625 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :
 626