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)); gint width, height; #if GTK_CHECK_VERSION(3,0,0) GdkDevice *device = gdk_event_get_device(event); gdk_window_get_device_position(window, device, &wx, &wy, NULL); gdk_window_get_geometry(window, NULL /*x*/, NULL /*y*/, &width, &height); #else gdk_window_get_pointer(window, &wx, &wy, NULL); gdk_window_get_geometry(window, NULL /*x*/, NULL /*y*/, &width, &height, NULL/*depth*/); #endif Geom::Point const event_win(wx, wy); 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<Inkscape::CanvasAxonomGrid *>(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); #if GTK_CHECK_VERSION(3,0,0) gdk_device_grab(device, gtk_widget_get_window(widget), GDK_OWNERSHIP_NONE, FALSE, (GdkEventMask)(GDK_BUTTON_RELEASE_MASK | GDK_POINTER_MOTION_MASK ), NULL, event->button.time); #else gdk_pointer_grab(gtk_widget_get_window (widget), FALSE, (GdkEventMask)(GDK_BUTTON_RELEASE_MASK | GDK_POINTER_MOTION_MASK ), NULL, NULL, event->button.time); #endif } 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); #if GTK_CHECK_VERSION(3,0,0) gdk_device_ungrab(device, event->button.time); #else gdk_pointer_ungrab(event->button.time); #endif 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); } sp_canvas_item_destroy(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; }
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<SPDesktop*>(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 } else { GdkCursor *guide_cursor; guide_cursor = gdk_cursor_new (GDK_HAND1); 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, _("<b>Guideline</b>: %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; }