/** * @file * Event handlers for SPDesktop. */ /* Author: * Lauris Kaplinski * Abhishek Sharma * * Copyright (C) 1999-2002 Lauris Kaplinski * Copyright (C) 1999-2010 Others * * Released under GNU GPL, read the file 'COPYING' for more information */ #ifdef HAVE_CONFIG_H # include #endif #include #include #include <2geom/line.h> #include <2geom/angle.h> #include #include "ui/dialog/guides.h" #include "desktop.h" #include "desktop-handles.h" #include "dialogs/dialog-events.h" #include "display/canvas-axonomgrid.h" #include "display/canvas-grid.h" #include "display/guideline.h" #include "display/snap-indicator.h" #include "document.h" #include "document-undo.h" #include "event-context.h" #include "helper/action.h" #include "helper/unit-menu.h" #include "helper/units.h" #include "message-context.h" #include "preferences.h" #include "snap.h" #include "display/sp-canvas.h" #include "sp-guide.h" #include "sp-metrics.h" #include "sp-namedview.h" #include "tools-switch.h" #include "verbs.h" #include "widgets/desktop-widget.h" #include "xml/repr.h" #if !GTK_CHECK_VERSION(2,22,0) #include "compat-key-syms.h" #endif using Inkscape::DocumentUndo; static void snoop_extended(GdkEvent* event, SPDesktop *desktop); static void init_extended(); void sp_dt_ruler_snap_new_guide(SPDesktop *desktop, SPCanvasItem *guide, Geom::Point &event_dt, Geom::Point &normal); /* Root item handler */ int sp_desktop_root_handler(SPCanvasItem */*item*/, GdkEvent *event, SPDesktop *desktop) { static bool watch = false; static bool first = true; if ( first ) { Inkscape::Preferences *prefs = Inkscape::Preferences::get(); if ( prefs->getBool("/options/useextinput/value", true) && prefs->getBool("/options/switchonextinput/value") ) { watch = true; init_extended(); } first = false; } if ( watch ) { snoop_extended(event, desktop); } return sp_event_context_root_handler(desktop->event_context, event); } static gint sp_dt_ruler_event(GtkWidget *widget, GdkEvent *event, SPDesktopWidget *dtw, bool horiz) { static bool clicked = false; static bool dragged = false; static SPCanvasItem *guide = NULL; static Geom::Point normal; int wx, wy; static gint xp = 0, yp = 0; // where drag started SPDesktop *desktop = dtw->desktop; GdkWindow *window = gtk_widget_get_window(GTK_WIDGET(dtw->canvas)); gdk_window_get_pointer(window, &wx, &wy, NULL); Geom::Point const event_win(wx, wy); gint width, height; #if GTK_CHECK_VERSION(3,0,0) gdk_window_get_geometry(window, NULL /*x*/, NULL /*y*/, &width, &height); #else gdk_window_get_geometry(window, NULL /*x*/, NULL /*y*/, &width, &height, NULL/*depth*/); #endif switch (event->type) { case GDK_BUTTON_PRESS: if (event->button.button == 1) { clicked = true; dragged = false; // save click origin xp = (gint) event->button.x; yp = (gint) event->button.y; Geom::Point const event_w(sp_canvas_window_to_world(dtw->canvas, event_win)); Geom::Point const event_dt(desktop->w2d(event_w)); // calculate the normal of the guidelines when dragged from the edges of rulers. Geom::Point normal_bl_to_tr(-1.,1.); //bottomleft to topright Geom::Point normal_tr_to_bl(1.,1.); //topright to bottomleft normal_bl_to_tr.normalize(); normal_tr_to_bl.normalize(); Inkscape::CanvasGrid * grid = sp_namedview_get_first_enabled_grid(desktop->namedview); if (grid){ if (grid->getGridType() == Inkscape::GRID_AXONOMETRIC ) { Inkscape::CanvasAxonomGrid *axonomgrid = dynamic_cast(grid); if (event->button.state & GDK_CONTROL_MASK) { // guidelines normal to gridlines normal_bl_to_tr = Geom::Point::polar(-axonomgrid->angle_rad[0], 1.0); normal_tr_to_bl = Geom::Point::polar(axonomgrid->angle_rad[2], 1.0); } else { normal_bl_to_tr = rot90(Geom::Point::polar(axonomgrid->angle_rad[2], 1.0)); normal_tr_to_bl = rot90(Geom::Point::polar(-axonomgrid->angle_rad[0], 1.0)); } } } if (horiz) { if (wx < 50) { normal = normal_bl_to_tr; } else if (wx > width - 50) { normal = normal_tr_to_bl; } else { normal = Geom::Point(0.,1.); } } else { if (wy < 50) { normal = normal_bl_to_tr; } else if (wy > height - 50) { normal = normal_tr_to_bl; } else { normal = Geom::Point(1.,0.); } } guide = sp_guideline_new(desktop->guides, NULL, event_dt, normal); sp_guideline_set_color(SP_GUIDELINE(guide), desktop->namedview->guidehicolor); gdk_pointer_grab(gtk_widget_get_window (widget), FALSE, (GdkEventMask)(GDK_BUTTON_RELEASE_MASK | GDK_POINTER_MOTION_MASK ), NULL, NULL, event->button.time); } break; case GDK_MOTION_NOTIFY: if (clicked) { Geom::Point const event_w(sp_canvas_window_to_world(dtw->canvas, event_win)); Geom::Point event_dt(desktop->w2d(event_w)); Inkscape::Preferences *prefs = Inkscape::Preferences::get(); gint tolerance = prefs->getIntLimited("/options/dragtolerance/value", 0, 0, 100); if ( ( abs( (gint) event->motion.x - xp ) < tolerance ) && ( abs( (gint) event->motion.y - yp ) < tolerance ) ) { break; } dragged = true; // explicitly show guidelines; if I draw a guide, I want them on if ((horiz ? wy : wx) >= 0) { desktop->namedview->setGuides(true); } if (!(event->motion.state & GDK_SHIFT_MASK)) { sp_dt_ruler_snap_new_guide(desktop, guide, event_dt, normal); } sp_guideline_set_normal(SP_GUIDELINE(guide), normal); sp_guideline_set_position(SP_GUIDELINE(guide), event_dt); desktop->set_coordinate_status(event_dt); desktop->setPosition(event_dt); } break; case GDK_BUTTON_RELEASE: if (clicked && event->button.button == 1) { sp_event_context_discard_delayed_snap_event(desktop->event_context); gdk_pointer_ungrab(event->button.time); Geom::Point const event_w(sp_canvas_window_to_world(dtw->canvas, event_win)); Geom::Point event_dt(desktop->w2d(event_w)); if (!(event->button.state & GDK_SHIFT_MASK)) { sp_dt_ruler_snap_new_guide(desktop, guide, event_dt, normal); } gtk_object_destroy(GTK_OBJECT(guide)); guide = NULL; if ((horiz ? wy : wx) >= 0) { Inkscape::XML::Document *xml_doc = desktop->doc()->getReprDoc(); Inkscape::XML::Node *repr = xml_doc->createElement("sodipodi:guide"); sp_repr_set_point(repr, "orientation", normal); sp_repr_set_point(repr, "position", event_dt); desktop->namedview->appendChild(repr); Inkscape::GC::release(repr); DocumentUndo::done(sp_desktop_document(desktop), SP_VERB_NONE, _("Create guide")); } desktop->set_coordinate_status(event_dt); if (!dragged) { // Ruler click (without drag) toggle the guide visibility on and off Inkscape::XML::Node *repr = desktop->namedview->getRepr(); sp_namedview_toggle_guides(sp_desktop_document(desktop), repr); } clicked = false; dragged = false; } default: break; } return FALSE; } int sp_dt_hruler_event(GtkWidget *widget, GdkEvent *event, SPDesktopWidget *dtw) { if (event->type == GDK_MOTION_NOTIFY) { sp_event_context_snap_delay_handler(dtw->desktop->event_context, (gpointer) widget, (gpointer) dtw, (GdkEventMotion *)event, DelayedSnapEvent::GUIDE_HRULER); } return sp_dt_ruler_event(widget, event, dtw, true); } int sp_dt_vruler_event(GtkWidget *widget, GdkEvent *event, SPDesktopWidget *dtw) { if (event->type == GDK_MOTION_NOTIFY) { sp_event_context_snap_delay_handler(dtw->desktop->event_context, (gpointer) widget, (gpointer) dtw, (GdkEventMotion *)event, DelayedSnapEvent::GUIDE_VRULER); } return sp_dt_ruler_event(widget, event, dtw, false); } static Geom::Point drag_origin; static SPGuideDragType drag_type = SP_DRAG_NONE; //static bool reset_drag_origin = false; // when Ctrl is pressed while dragging, this is used to trigger resetting of the // // drag origin to that location so that constrained movement is more intuitive // Min distance from anchor to initiate rotation, measured in screenpixels #define tol 40.0 gint sp_dt_guide_event(SPCanvasItem *item, GdkEvent *event, gpointer data) { static bool moved = false; gint ret = FALSE; SPGuide *guide = SP_GUIDE(data); SPDesktop *desktop = static_cast(g_object_get_data(G_OBJECT(item->canvas), "SPDesktop")); switch (event->type) { case GDK_2BUTTON_PRESS: if (event->button.button == 1) { drag_type = SP_DRAG_NONE; sp_event_context_discard_delayed_snap_event(desktop->event_context); sp_canvas_item_ungrab(item, event->button.time); Inkscape::UI::Dialogs::GuidelinePropertiesDialog::showDialog(guide, desktop); ret = TRUE; } break; case GDK_BUTTON_PRESS: if (event->button.button == 1) { Geom::Point const event_w(event->button.x, event->button.y); Geom::Point const event_dt(desktop->w2d(event_w)); // Due to the tolerance allowed when grabbing a guide, event_dt will generally // be close to the guide but not just exactly on it. The drag origin calculated // here must be exactly on the guide line though, otherwise // small errors will occur once we snap, see // https://bugs.launchpad.net/inkscape/+bug/333762 drag_origin = Geom::projection(event_dt, Geom::Line(guide->point_on_line, guide->angle())); if (event->button.state & GDK_SHIFT_MASK) { // with shift we rotate the guide drag_type = SP_DRAG_ROTATE; } else { if (event->button.state & GDK_CONTROL_MASK) { drag_type = SP_DRAG_MOVE_ORIGIN; } else { drag_type = SP_DRAG_TRANSLATE; } } if (drag_type == SP_DRAG_ROTATE || drag_type == SP_DRAG_TRANSLATE) { sp_canvas_item_grab(item, ( GDK_BUTTON_RELEASE_MASK | GDK_BUTTON_PRESS_MASK | GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK ), NULL, event->button.time); } ret = TRUE; } break; case GDK_MOTION_NOTIFY: if (drag_type != SP_DRAG_NONE) { Geom::Point const motion_w(event->motion.x, event->motion.y); Geom::Point motion_dt(desktop->w2d(motion_w)); sp_event_context_snap_delay_handler(desktop->event_context, (gpointer) item, data, (GdkEventMotion *)event, DelayedSnapEvent::GUIDE_HANDLER); // This is for snapping while dragging existing guidelines. New guidelines, // which are dragged off the ruler, are being snapped in sp_dt_ruler_event SnapManager &m = desktop->namedview->snap_manager; m.setup(desktop, true, NULL, NULL, guide); if (drag_type == SP_DRAG_MOVE_ORIGIN) { // If we snap in guideConstrainedSnap() below, then motion_dt will // be forced to be on the guide. If we don't snap however, then // the origin should still be constrained to the guide. So let's do // that explicitly first: Geom::Line line(guide->point_on_line, guide->angle()); Geom::Coord t = line.nearestPoint(motion_dt); motion_dt = line.pointAt(t); if (!(event->motion.state & GDK_SHIFT_MASK)) { m.guideConstrainedSnap(motion_dt, *guide); } } else if (!((drag_type == SP_DRAG_ROTATE) && (event->motion.state & GDK_CONTROL_MASK))) { // cannot use shift here to disable snapping, because we already use it for rotating the guide if (drag_type == SP_DRAG_ROTATE) { m.guideFreeSnap(motion_dt, guide->point_on_line, true, false); } else { m.guideFreeSnap(motion_dt, guide->normal_to_line, false, true); } } m.unSetup(); switch (drag_type) { case SP_DRAG_TRANSLATE: { sp_guide_moveto(*guide, motion_dt, false); break; } case SP_DRAG_ROTATE: { Geom::Point pt = motion_dt - guide->point_on_line; Geom::Angle angle(pt); if (event->motion.state & GDK_CONTROL_MASK) { Inkscape::Preferences *prefs = Inkscape::Preferences::get(); unsigned const snaps = abs(prefs->getInt("/options/rotationsnapsperpi/value", 12)); bool const relative_snaps = abs(prefs->getBool("/options/relativeguiderotationsnap/value", false)); if (snaps) { if (relative_snaps) { Geom::Angle orig_angle(guide->normal_to_line); Geom::Angle snap_angle = angle - orig_angle; double sections = floor(snap_angle.radians0() * snaps / M_PI + .5); angle = (M_PI / snaps) * sections + orig_angle.radians0(); } else { double sections = floor(angle.radians0() * snaps / M_PI + .5); angle = (M_PI / snaps) * sections; } } } sp_guide_set_normal(*guide, Geom::Point::polar(angle).cw(), false); break; } case SP_DRAG_MOVE_ORIGIN: { sp_guide_moveto(*guide, motion_dt, false); break; } case SP_DRAG_NONE: g_assert_not_reached(); break; } moved = true; desktop->set_coordinate_status(motion_dt); desktop->setPosition(motion_dt); ret = TRUE; } break; case GDK_BUTTON_RELEASE: if (drag_type != SP_DRAG_NONE && event->button.button == 1) { sp_event_context_discard_delayed_snap_event(desktop->event_context); if (moved) { Geom::Point const event_w(event->button.x, event->button.y); Geom::Point event_dt(desktop->w2d(event_w)); SnapManager &m = desktop->namedview->snap_manager; m.setup(desktop, true, NULL, NULL, guide); if (drag_type == SP_DRAG_MOVE_ORIGIN) { // If we snap in guideConstrainedSnap() below, then motion_dt will // be forced to be on the guide. If we don't snap however, then // the origin should still be constrained to the guide. So let's // do that explicitly first: Geom::Line line(guide->point_on_line, guide->angle()); Geom::Coord t = line.nearestPoint(event_dt); event_dt = line.pointAt(t); if (!(event->button.state & GDK_SHIFT_MASK)) { m.guideConstrainedSnap(event_dt, *guide); } } else if (!((drag_type == SP_DRAG_ROTATE) && (event->motion.state & GDK_CONTROL_MASK))) { // cannot use shift here to disable snapping, because we already use it for rotating the guide if (drag_type == SP_DRAG_ROTATE) { m.guideFreeSnap(event_dt, guide->point_on_line, true, false); } else { m.guideFreeSnap(event_dt, guide->normal_to_line, false, true); } } m.unSetup(); if (sp_canvas_world_pt_inside_window(item->canvas, event_w)) { switch (drag_type) { case SP_DRAG_TRANSLATE: { sp_guide_moveto(*guide, event_dt, true); break; } case SP_DRAG_ROTATE: { Geom::Point pt = event_dt - guide->point_on_line; Geom::Angle angle(pt); if (event->motion.state & GDK_CONTROL_MASK) { Inkscape::Preferences *prefs = Inkscape::Preferences::get(); unsigned const snaps = abs(prefs->getInt("/options/rotationsnapsperpi/value", 12)); bool const relative_snaps = abs(prefs->getBool("/options/relativeguiderotationsnap/value", false)); if (snaps) { if (relative_snaps) { Geom::Angle orig_angle(guide->normal_to_line); Geom::Angle snap_angle = angle - orig_angle; double sections = floor(snap_angle.radians0() * snaps / M_PI + .5); angle = (M_PI / snaps) * sections + orig_angle.radians0(); } else { double sections = floor(angle.radians0() * snaps / M_PI + .5); angle = (M_PI / snaps) * sections; } } } sp_guide_set_normal(*guide, Geom::Point::polar(angle).cw(), true); break; } case SP_DRAG_MOVE_ORIGIN: { sp_guide_moveto(*guide, event_dt, true); break; } case SP_DRAG_NONE: g_assert_not_reached(); break; } DocumentUndo::done(sp_desktop_document(desktop), SP_VERB_NONE, _("Move guide")); } else { /* Undo movement of any attached shapes. */ sp_guide_moveto(*guide, guide->point_on_line, false); sp_guide_set_normal(*guide, guide->normal_to_line, false); sp_guide_remove(guide); DocumentUndo::done(sp_desktop_document(desktop), SP_VERB_NONE, _("Delete guide")); } moved = false; desktop->set_coordinate_status(event_dt); desktop->setPosition (event_dt); } drag_type = SP_DRAG_NONE; sp_canvas_item_ungrab(item, event->button.time); ret=TRUE; } case GDK_ENTER_NOTIFY: { sp_guideline_set_color(SP_GUIDELINE(item), guide->hicolor); // set move or rotate cursor Geom::Point const event_w(event->crossing.x, event->crossing.y); Geom::Point const event_dt(desktop->w2d(event_w)); if ((event->crossing.state & GDK_SHIFT_MASK) && (drag_type != SP_DRAG_MOVE_ORIGIN)) { GdkCursor *guide_cursor; guide_cursor = gdk_cursor_new (GDK_EXCHANGE); gdk_window_set_cursor(gtk_widget_get_window (GTK_WIDGET(sp_desktop_canvas(desktop))), guide_cursor); #if GTK_CHECK_VERSION(3,0,0) g_object_unref(guide_cursor); #else gdk_cursor_unref(guide_cursor); #endif } char *guide_description = sp_guide_description(guide); desktop->guidesMessageContext()->setF(Inkscape::NORMAL_MESSAGE, _("Guideline: %s"), guide_description); g_free(guide_description); break; } case GDK_LEAVE_NOTIFY: sp_guideline_set_color(SP_GUIDELINE(item), guide->color); // restore event context's cursor gdk_window_set_cursor(gtk_widget_get_window (GTK_WIDGET(sp_desktop_canvas(desktop))), desktop->event_context->cursor); desktop->guidesMessageContext()->clear(); break; case GDK_KEY_PRESS: switch (get_group0_keyval (&event->key)) { case GDK_KEY_Delete: case GDK_KEY_KP_Delete: case GDK_KEY_BackSpace: { SPDocument *doc = guide->document; sp_guide_remove(guide); DocumentUndo::done(doc, SP_VERB_NONE, _("Delete guide")); ret = TRUE; sp_event_context_discard_delayed_snap_event(desktop->event_context); break; } case GDK_KEY_Shift_L: case GDK_KEY_Shift_R: if (drag_type != SP_DRAG_MOVE_ORIGIN) { GdkCursor *guide_cursor; guide_cursor = gdk_cursor_new (GDK_EXCHANGE); gdk_window_set_cursor(gtk_widget_get_window (GTK_WIDGET(sp_desktop_canvas(desktop))), guide_cursor); #if GTK_CHECK_VERSION(3,0,0) g_object_unref(guide_cursor); #else gdk_cursor_unref(guide_cursor); #endif ret = TRUE; break; } default: // do nothing; break; } break; case GDK_KEY_RELEASE: switch (get_group0_keyval (&event->key)) { case GDK_KEY_Shift_L: case GDK_KEY_Shift_R: GdkCursor *guide_cursor; guide_cursor = gdk_cursor_new (GDK_EXCHANGE); gdk_window_set_cursor(gtk_widget_get_window (GTK_WIDGET(sp_desktop_canvas(desktop))), guide_cursor); #if GTK_CHECK_VERSION(3,0,0) g_object_unref(guide_cursor); #else gdk_cursor_unref(guide_cursor); #endif break; default: // do nothing; break; } default: break; } return ret; } //static std::map switchMap; static std::map toolToUse; static std::string lastName; static GdkInputSource lastType = GDK_SOURCE_MOUSE; static void init_extended() { std::string avoidName = "pad"; #if GTK_CHECK_VERSION(3,0,0) GdkDisplay *display = gdk_display_get_default(); GdkDeviceManager *dm = gdk_display_get_device_manager(display); GList* devices = gdk_device_manager_list_devices(dm, GDK_DEVICE_TYPE_SLAVE); #else GList* devices = gdk_devices_list(); #endif if ( devices ) { for ( GList* curr = devices; curr; curr = g_list_next(curr) ) { GdkDevice* dev = reinterpret_cast(curr->data); #if GTK_CHECK_VERSION(2, 22, 0) gchar const *devName = gdk_device_get_name(dev); GdkInputSource devSrc = gdk_device_get_source(dev); #else gchar const *devName = dev->name; GdkInputSource devSrc = dev->source; #endif if ( devName && (avoidName != devName) && (devSrc != GDK_SOURCE_MOUSE) ) { // g_message("Adding '%s' as [%d]", devName, devSrc); // Set the initial tool for the device switch ( devSrc ) { case GDK_SOURCE_PEN: toolToUse[devName] = TOOLS_CALLIGRAPHIC; break; case GDK_SOURCE_ERASER: toolToUse[devName] = TOOLS_ERASER; break; case GDK_SOURCE_CURSOR: toolToUse[devName] = TOOLS_SELECT; break; default: ; // do not add } // } else if (devName) { // g_message("Skippn '%s' as [%d]", devName, devSrc); } } } #if GTK_CHECK_VERSION(3,0,0) g_list_free(devices); #endif } void snoop_extended(GdkEvent* event, SPDesktop *desktop) { GdkInputSource source = GDK_SOURCE_MOUSE; std::string name; switch ( event->type ) { case GDK_MOTION_NOTIFY: { GdkEventMotion* event2 = reinterpret_cast(event); if ( event2->device ) { #if GTK_CHECK_VERSION(2, 22, 0) source = gdk_device_get_source(event2->device); name = gdk_device_get_name(event2->device); #else source = event2->device->source; name = event2->device->name; #endif } } break; case GDK_BUTTON_PRESS: case GDK_2BUTTON_PRESS: case GDK_3BUTTON_PRESS: case GDK_BUTTON_RELEASE: { GdkEventButton* event2 = reinterpret_cast(event); if ( event2->device ) { #if GTK_CHECK_VERSION(2, 22, 0) source = gdk_device_get_source(event2->device); name = gdk_device_get_name(event2->device); #else source = event2->device->source; name = event2->device->name; #endif } } break; case GDK_SCROLL: { GdkEventScroll* event2 = reinterpret_cast(event); if ( event2->device ) { #if GTK_CHECK_VERSION(2, 22, 0) source = gdk_device_get_source(event2->device); name = gdk_device_get_name(event2->device); #else source = event2->device->source; name = event2->device->name; #endif } } break; case GDK_PROXIMITY_IN: case GDK_PROXIMITY_OUT: { GdkEventProximity* event2 = reinterpret_cast(event); if ( event2->device ) { #if GTK_CHECK_VERSION(2, 22, 0) source = gdk_device_get_source(event2->device); name = gdk_device_get_name(event2->device); #else source = event2->device->source; name = event2->device->source; #endif } } break; default: ; } if (!name.empty()) { if ( lastType != source || lastName != name ) { // The device switched. See if it is one we 'count' //g_message("Changed device %s -> %s", lastName.c_str(), name.c_str()); std::map::iterator it = toolToUse.find(lastName); if (it != toolToUse.end()) { // Save the tool currently selected for next time the input // device shows up. it->second = tools_active(desktop); } it = toolToUse.find(name); if (it != toolToUse.end() ) { tools_switch(desktop, it->second); } lastName = name; lastType = source; } } } void sp_dt_ruler_snap_new_guide(SPDesktop *desktop, SPCanvasItem * /*guide*/, Geom::Point &event_dt, Geom::Point &normal) { SnapManager &m = desktop->namedview->snap_manager; m.setup(desktop); // We're dragging a brand new guide, just pulled of the rulers seconds ago. When snapping to a // path this guide will change it slope to become either tangential or perpendicular to that path. It's // therefore not useful to try tangential or perpendicular snapping, so this will be disabled temporarily bool pref_perp = m.snapprefs.getSnapPerp(); bool pref_tang = m.snapprefs.getSnapTang(); m.snapprefs.setSnapPerp(false); m.snapprefs.setSnapTang(false); // We only have a temporary guide which is not stored in our document yet. // Because the guide snapper only looks in the document for guides to snap to, // we don't have to worry about a guide snapping to itself here Geom::Point normal_orig = normal; m.guideFreeSnap(event_dt, normal, false, false); // After snapping, both event_dt and normal have been modified accordingly; we'll take the normal (of the // curve we snapped to) to set the normal the guide. And rotate it by 90 deg. if needed if (pref_perp) { // Perpendicular snapping to paths is requested by the user, so let's do that if (normal != normal_orig) { normal = Geom::rot90(normal); } } if (!(pref_tang || pref_perp)) { // if we don't want to snap either perpendicularly or tangentially, then normal = normal_orig; // we must restore the normal to it's original state } // Restore the preferences m.snapprefs.setSnapPerp(pref_perp); m.snapprefs.setSnapTang(pref_tang); m.unSetup(); } /* Local Variables: mode:c++ c-file-style:"stroustrup" c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +)) indent-tabs-mode:nil fill-column:99 End: */ // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :