#define __SP_BOX3D_CONTEXT_C__ /* * 3D box drawing context * * Author: * Lauris Kaplinski <lauris@kaplinski.com> * bulia byak <buliabyak@users.sf.net> * * Copyright (C) 2007 Maximilian Albert <Anhalter42@gmx.de> * Copyright (C) 2006 Johan Engelen <johan@shouraizou.nl> * Copyright (C) 2000-2005 authors * Copyright (C) 2000-2001 Ximian, Inc. * * Released under GNU GPL, read the file 'COPYING' for more information */ #include "config.h" #include <gdk/gdkkeysyms.h> #include "macros.h" #include "display/sp-canvas.h" #include "document.h" #include "sp-namedview.h" #include "selection.h" #include "selection-chemistry.h" #include "desktop-handles.h" #include "snap.h" #include "display/curve.h" #include "desktop.h" #include "message-context.h" #include "pixmaps/cursor-3dbox.xpm" #include "box3d.h" #include "box3d-context.h" #include "sp-metrics.h" #include <glibmm/i18n.h> #include "object-edit.h" #include "xml/repr.h" #include "xml/node-event-vector.h" #include "preferences.h" #include "context-fns.h" #include "desktop-style.h" #include "transf_mat_3x4.h" #include "perspective-line.h" #include "persp3d.h" #include "box3d-side.h" #include "document-private.h" #include "line-geometry.h" #include "shape-editor.h" static void sp_box3d_context_class_init(Box3DContextClass *klass); static void sp_box3d_context_init(Box3DContext *box3d_context); static void sp_box3d_context_dispose(GObject *object); static void sp_box3d_context_setup(SPEventContext *ec); static gint sp_box3d_context_root_handler(SPEventContext *event_context, GdkEvent *event); static gint sp_box3d_context_item_handler(SPEventContext *event_context, SPItem *item, GdkEvent *event); static void sp_box3d_drag(Box3DContext &bc, guint state); static void sp_box3d_finish(Box3DContext *bc); static SPEventContextClass *parent_class; GtkType sp_box3d_context_get_type() { static GType type = 0; if (!type) { GTypeInfo info = { sizeof(Box3DContextClass), NULL, NULL, (GClassInitFunc) sp_box3d_context_class_init, NULL, NULL, sizeof(Box3DContext), 4, (GInstanceInitFunc) sp_box3d_context_init, NULL, /* value_table */ }; type = g_type_register_static(SP_TYPE_EVENT_CONTEXT, "Box3DContext", &info, (GTypeFlags) 0); } return type; } static void sp_box3d_context_class_init(Box3DContextClass *klass) { GObjectClass *object_class = (GObjectClass *) klass; SPEventContextClass *event_context_class = (SPEventContextClass *) klass; parent_class = (SPEventContextClass *) g_type_class_peek_parent(klass); object_class->dispose = sp_box3d_context_dispose; event_context_class->setup = sp_box3d_context_setup; event_context_class->root_handler = sp_box3d_context_root_handler; event_context_class->item_handler = sp_box3d_context_item_handler; } static void sp_box3d_context_init(Box3DContext *box3d_context) { SPEventContext *event_context = SP_EVENT_CONTEXT(box3d_context); event_context->cursor_shape = cursor_3dbox_xpm; event_context->hot_x = 4; event_context->hot_y = 4; event_context->xp = 0; event_context->yp = 0; event_context->tolerance = 0; event_context->within_tolerance = false; event_context->item_to_select = NULL; box3d_context->item = NULL; box3d_context->ctrl_dragged = false; box3d_context->extruded = false; box3d_context->_vpdrag = NULL; new (&box3d_context->sel_changed_connection) sigc::connection(); } static void sp_box3d_context_dispose(GObject *object) { Box3DContext *bc = SP_BOX3D_CONTEXT(object); SPEventContext *ec = SP_EVENT_CONTEXT(object); ec->enableGrDrag(false); delete (bc->_vpdrag); bc->_vpdrag = NULL; bc->sel_changed_connection.disconnect(); bc->sel_changed_connection.~connection(); delete ec->shape_editor; ec->shape_editor = NULL; /* fixme: This is necessary because we do not grab */ if (bc->item) { sp_box3d_finish(bc); } if (bc->_message_context) { delete bc->_message_context; } G_OBJECT_CLASS(parent_class)->dispose(object); } /** \brief Callback that processes the "changed" signal on the selection; destroys old and creates new knotholder */ static void sp_box3d_context_selection_changed(Inkscape::Selection *selection, gpointer data) { Box3DContext *bc = SP_BOX3D_CONTEXT(data); SPEventContext *ec = SP_EVENT_CONTEXT(bc); ec->shape_editor->unset_item(SH_KNOTHOLDER); SPItem *item = selection->singleItem(); ec->shape_editor->set_item(item, SH_KNOTHOLDER); if (selection->perspList().size() == 1) { // selecting a single box changes the current perspective ec->desktop->doc()->current_persp3d = selection->perspList().front(); } } /* create a default perspective in document defs if none is present (can happen after 'vacuum defs' or when a pre-0.46 file is opened) */ static void sp_box3d_context_check_for_persp_in_defs(SPDocument *document) { SPDefs *defs = (SPDefs *) SP_DOCUMENT_DEFS(document); bool has_persp = false; for (SPObject *child = sp_object_first_child(defs); child != NULL; child = SP_OBJECT_NEXT(child) ) { if (SP_IS_PERSP3D(child)) { has_persp = true; break; } } if (!has_persp) { document->current_persp3d = persp3d_create_xml_element (document); } } static void sp_box3d_context_setup(SPEventContext *ec) { Box3DContext *bc = SP_BOX3D_CONTEXT(ec); if (((SPEventContextClass *) parent_class)->setup) { ((SPEventContextClass *) parent_class)->setup(ec); } sp_box3d_context_check_for_persp_in_defs(sp_desktop_document (ec->desktop)); ec->shape_editor = new ShapeEditor(ec->desktop); SPItem *item = sp_desktop_selection(ec->desktop)->singleItem(); if (item) { ec->shape_editor->set_item(item, SH_KNOTHOLDER); } bc->sel_changed_connection.disconnect(); bc->sel_changed_connection = sp_desktop_selection(ec->desktop)->connectChanged( sigc::bind(sigc::ptr_fun(&sp_box3d_context_selection_changed), (gpointer)bc) ); bc->_vpdrag = new Box3D::VPDrag(sp_desktop_document (ec->desktop)); Inkscape::Preferences *prefs = Inkscape::Preferences::get(); if (prefs->getBool("/tools/shapes/selcue")) { ec->enableSelectionCue(); } if (prefs->getBool("/tools/shapes/gradientdrag")) { ec->enableGrDrag(); } bc->_message_context = new Inkscape::MessageContext((ec->desktop)->messageStack()); } static gint sp_box3d_context_item_handler(SPEventContext *event_context, SPItem *item, GdkEvent *event) { SPDesktop *desktop = event_context->desktop; gint ret = FALSE; switch (event->type) { case GDK_BUTTON_PRESS: if ( event->button.button == 1 && !event_context->space_panning) { Inkscape::setup_for_drag_start(desktop, event_context, event); ret = TRUE; } break; // motion and release are always on root (why?) default: break; } if (((SPEventContextClass *) parent_class)->item_handler) { ret = ((SPEventContextClass *) parent_class)->item_handler(event_context, item, event); } return ret; } static gint sp_box3d_context_root_handler(SPEventContext *event_context, GdkEvent *event) { static bool dragging; SPDesktop *desktop = event_context->desktop; Inkscape::Selection *selection = sp_desktop_selection (desktop); Inkscape::Preferences *prefs = Inkscape::Preferences::get(); int const snaps = prefs->getInt("/options/rotationsnapsperpi/value", 12); Box3DContext *bc = SP_BOX3D_CONTEXT(event_context); g_assert (SP_ACTIVE_DOCUMENT->current_persp3d); Persp3D *cur_persp = SP_ACTIVE_DOCUMENT->current_persp3d; event_context->tolerance = prefs->getIntLimited("/options/dragtolerance/value", 0, 0, 100); gint ret = FALSE; switch (event->type) { case GDK_BUTTON_PRESS: if ( event->button.button == 1 && !event_context->space_panning) { Geom::Point const button_w(event->button.x, event->button.y); // save drag origin event_context->xp = (gint) button_w[Geom::X]; event_context->yp = (gint) button_w[Geom::Y]; event_context->within_tolerance = true; // remember clicked item, *not* disregarding groups (since a 3D box is a group), honoring Alt event_context->item_to_select = sp_event_context_find_item (desktop, button_w, event->button.state & GDK_MOD1_MASK, event->button.state & GDK_CONTROL_MASK); dragging = true; sp_event_context_snap_window_open(event_context); /* */ Geom::Point button_dt(desktop->w2d(button_w)); bc->drag_origin = from_2geom(button_dt); bc->drag_ptB = from_2geom(button_dt); bc->drag_ptC = from_2geom(button_dt); /* Projective preimages of clicked point under current perspective */ bc->drag_origin_proj = cur_persp->tmat.preimage (from_2geom(button_dt), 0, Proj::Z); bc->drag_ptB_proj = bc->drag_origin_proj; bc->drag_ptC_proj = bc->drag_origin_proj; bc->drag_ptC_proj.normalize(); bc->drag_ptC_proj[Proj::Z] = 0.25; /* Snap center */ SnapManager &m = desktop->namedview->snap_manager; m.setup(desktop, true, bc->item); m.freeSnapReturnByRef(Inkscape::SnapPreferences::SNAPPOINT_NODE, button_dt, Inkscape::SNAPSOURCE_HANDLE); bc->center = from_2geom(button_dt); sp_canvas_item_grab(SP_CANVAS_ITEM(desktop->acetate), ( GDK_KEY_PRESS_MASK | GDK_BUTTON_RELEASE_MASK | GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK | GDK_BUTTON_PRESS_MASK ), NULL, event->button.time); ret = TRUE; } break; case GDK_MOTION_NOTIFY: if ( dragging && ( event->motion.state & GDK_BUTTON1_MASK ) && !event_context->space_panning) { if ( event_context->within_tolerance && ( abs( (gint) event->motion.x - event_context->xp ) < event_context->tolerance ) && ( abs( (gint) event->motion.y - event_context->yp ) < event_context->tolerance ) ) { break; // do not drag if we're within tolerance from origin } // Once the user has moved farther than tolerance from the original location // (indicating they intend to draw, not click), then always process the // motion notify coordinates as given (no snapping back to origin) event_context->within_tolerance = false; Geom::Point const motion_w(event->motion.x, event->motion.y); Geom::Point motion_dt(desktop->w2d(motion_w)); SnapManager &m = desktop->namedview->snap_manager; m.setup(desktop, true, bc->item); m.freeSnapReturnByRef(Inkscape::SnapPreferences::SNAPPOINT_NODE, motion_dt, Inkscape::SNAPSOURCE_HANDLE); bc->ctrl_dragged = event->motion.state & GDK_CONTROL_MASK; if (event->motion.state & GDK_SHIFT_MASK && !bc->extruded && bc->item) { // once shift is pressed, set bc->extruded bc->extruded = true; } if (!bc->extruded) { bc->drag_ptB = from_2geom(motion_dt); bc->drag_ptC = from_2geom(motion_dt); bc->drag_ptB_proj = cur_persp->tmat.preimage (from_2geom(motion_dt), 0, Proj::Z); bc->drag_ptC_proj = bc->drag_ptB_proj; bc->drag_ptC_proj.normalize(); bc->drag_ptC_proj[Proj::Z] = 0.25; } else { // Without Ctrl, motion of the extruded corner is constrained to the // perspective line from drag_ptB to vanishing point Y. if (!bc->ctrl_dragged) { /* snapping */ Box3D::PerspectiveLine pline (bc->drag_ptB, Proj::Z, SP_ACTIVE_DOCUMENT->current_persp3d); bc->drag_ptC = pline.closest_to (from_2geom(motion_dt)); bc->drag_ptB_proj.normalize(); bc->drag_ptC_proj = cur_persp->tmat.preimage (bc->drag_ptC, bc->drag_ptB_proj[Proj::X], Proj::X); } else { bc->drag_ptC = from_2geom(motion_dt); bc->drag_ptB_proj.normalize(); bc->drag_ptC_proj = cur_persp->tmat.preimage (from_2geom(motion_dt), bc->drag_ptB_proj[Proj::X], Proj::X); } Geom::Point pt2g = to_2geom(bc->drag_ptC); m.freeSnapReturnByRef(Inkscape::SnapPreferences::SNAPPOINT_NODE, pt2g, Inkscape::SNAPSOURCE_HANDLE); bc->drag_ptC = from_2geom(pt2g); } sp_box3d_drag(*bc, event->motion.state); ret = TRUE; } break; case GDK_BUTTON_RELEASE: event_context->xp = event_context->yp = 0; if ( event->button.button == 1 && !event_context->space_panning) { dragging = false; sp_event_context_snap_window_closed(event_context, false); //button release will also occur on a double-click; in that case suppress warnings if (!event_context->within_tolerance) { // we've been dragging, finish the box sp_box3d_finish(bc); } else if (event_context->item_to_select) { // no dragging, select clicked item if any if (event->button.state & GDK_SHIFT_MASK) { selection->toggle(event_context->item_to_select); } else { selection->set(event_context->item_to_select); } } else { // click in an empty space selection->clear(); } event_context->item_to_select = NULL; ret = TRUE; sp_canvas_item_ungrab(SP_CANVAS_ITEM(desktop->acetate), event->button.time); } break; case GDK_KEY_PRESS: switch (get_group0_keyval (&event->key)) { case GDK_Up: case GDK_Down: case GDK_KP_Up: case GDK_KP_Down: // prevent the zoom field from activation if (!MOD__CTRL_ONLY) ret = TRUE; break; case GDK_bracketright: persp3d_rotate_VP (inkscape_active_document()->current_persp3d, Proj::X, -180/snaps, MOD__ALT); sp_document_done(sp_desktop_document(desktop), SP_VERB_CONTEXT_3DBOX, _("Change perspective (angle of PLs)")); ret = true; break; case GDK_bracketleft: persp3d_rotate_VP (inkscape_active_document()->current_persp3d, Proj::X, 180/snaps, MOD__ALT); sp_document_done(sp_desktop_document(desktop), SP_VERB_CONTEXT_3DBOX, _("Change perspective (angle of PLs)")); ret = true; break; case GDK_parenright: persp3d_rotate_VP (inkscape_active_document()->current_persp3d, Proj::Y, -180/snaps, MOD__ALT); sp_document_done(sp_desktop_document(desktop), SP_VERB_CONTEXT_3DBOX, _("Change perspective (angle of PLs)")); ret = true; break; case GDK_parenleft: persp3d_rotate_VP (inkscape_active_document()->current_persp3d, Proj::Y, 180/snaps, MOD__ALT); sp_document_done(sp_desktop_document(desktop), SP_VERB_CONTEXT_3DBOX, _("Change perspective (angle of PLs)")); ret = true; break; case GDK_braceright: persp3d_rotate_VP (inkscape_active_document()->current_persp3d, Proj::Z, -180/snaps, MOD__ALT); sp_document_done(sp_desktop_document(desktop), SP_VERB_CONTEXT_3DBOX, _("Change perspective (angle of PLs)")); ret = true; break; case GDK_braceleft: persp3d_rotate_VP (inkscape_active_document()->current_persp3d, Proj::Z, 180/snaps, MOD__ALT); sp_document_done(sp_desktop_document(desktop), SP_VERB_CONTEXT_3DBOX, _("Change perspective (angle of PLs)")); ret = true; break; /* TODO: what is this??? case GDK_O: if (MOD__CTRL && MOD__SHIFT) { Box3D::create_canvas_point(persp3d_get_VP(inkscape_active_document()->current_persp3d, Proj::W).affine(), 6, 0xff00ff00); } ret = true; break; */ case GDK_g: case GDK_G: if (MOD__SHIFT_ONLY) { sp_selection_to_guides(desktop); ret = true; } break; case GDK_x: case GDK_X: if (MOD__ALT_ONLY) { desktop->setToolboxFocusTo ("altx-box3d"); ret = TRUE; } if (MOD__SHIFT_ONLY) { persp3d_toggle_VPs(selection->perspList(), Proj::X); bc->_vpdrag->updateLines(); // FIXME: Shouldn't this be done automatically? ret = true; } break; case GDK_y: case GDK_Y: if (MOD__SHIFT_ONLY) { persp3d_toggle_VPs(selection->perspList(), Proj::Y); bc->_vpdrag->updateLines(); // FIXME: Shouldn't this be done automatically? ret = true; } break; case GDK_z: case GDK_Z: if (MOD__SHIFT_ONLY) { persp3d_toggle_VPs(selection->perspList(), Proj::Z); bc->_vpdrag->updateLines(); // FIXME: Shouldn't this be done automatically? ret = true; } break; case GDK_Escape: sp_desktop_selection(desktop)->clear(); //TODO: make dragging escapable by Esc break; case GDK_space: if (dragging) { sp_canvas_item_ungrab(SP_CANVAS_ITEM(desktop->acetate), event->button.time); dragging = false; sp_event_context_snap_window_closed(event_context); if (!event_context->within_tolerance) { // we've been dragging, finish the box sp_box3d_finish(bc); } // do not return true, so that space would work switching to selector } break; default: break; } break; default: break; } if (!ret) { if (((SPEventContextClass *) parent_class)->root_handler) { ret = ((SPEventContextClass *) parent_class)->root_handler(event_context, event); } } return ret; } static void sp_box3d_drag(Box3DContext &bc, guint /*state*/) { SPDesktop *desktop = SP_EVENT_CONTEXT(&bc)->desktop; if (!bc.item) { if (Inkscape::have_viable_layer(desktop, bc._message_context) == false) { return; } /* Create object */ Inkscape::XML::Document *xml_doc = sp_document_repr_doc(SP_EVENT_CONTEXT_DOCUMENT(&bc)); Inkscape::XML::Node *repr = xml_doc->createElement("svg:g"); repr->setAttribute("sodipodi:type", "inkscape:box3d"); /* Set style */ sp_desktop_apply_style_tool (desktop, repr, "/tools/shapes/3dbox", false); bc.item = (SPItem *) desktop->currentLayer()->appendChildRepr(repr); Inkscape::GC::release(repr); Inkscape::XML::Node *repr_side; // TODO: Incorporate this in box3d-side.cpp! for (int i = 0; i < 6; ++i) { repr_side = xml_doc->createElement("svg:path"); repr_side->setAttribute("sodipodi:type", "inkscape:box3dside"); repr->addChild(repr_side, NULL); Box3DSide *side = SP_BOX3D_SIDE(inkscape_active_document()->getObjectByRepr (repr_side)); guint desc = Box3D::int_to_face(i); Box3D::Axis plane = (Box3D::Axis) (desc & 0x7); plane = (Box3D::is_plane(plane) ? plane : Box3D::orth_plane_or_axis(plane)); side->dir1 = Box3D::extract_first_axis_direction(plane); side->dir2 = Box3D::extract_second_axis_direction(plane); side->front_or_rear = (Box3D::FrontOrRear) (desc & 0x8); /* Set style */ box3d_side_apply_style(side); SP_OBJECT(side)->updateRepr(); // calls box3d_side_write() and updates, e.g., the axes string description } box3d_set_z_orders(SP_BOX3D(bc.item)); bc.item->updateRepr(); // TODO: It would be nice to show the VPs during dragging, but since there is no selection // at this point (only after finishing the box), we must do this "manually" /**** bc._vpdrag->updateDraggers(); ****/ sp_canvas_force_full_redraw_after_interruptions(desktop->canvas, 5); } g_assert(bc.item); SPBox3D *box = SP_BOX3D(bc.item); box->orig_corner0 = bc.drag_origin_proj; box->orig_corner7 = bc.drag_ptC_proj; box3d_check_for_swapped_coords(box); /* we need to call this from here (instead of from box3d_position_set(), for example) because z-order setting must not interfere with display updates during undo/redo */ box3d_set_z_orders (box); box3d_position_set(box); // status text bc._message_context->setF(Inkscape::NORMAL_MESSAGE, _("<b>3D Box</b>; with <b>Shift</b> to extrude along the Z axis")); } static void sp_box3d_finish(Box3DContext *bc) { bc->_message_context->clear(); g_assert (SP_ACTIVE_DOCUMENT->current_persp3d); if ( bc->item != NULL ) { SPDesktop * desktop = SP_EVENT_CONTEXT_DESKTOP(bc); SPBox3D *box = SP_BOX3D(bc->item); box->orig_corner0 = bc->drag_origin_proj; box->orig_corner7 = bc->drag_ptC_proj; box->updateRepr(); box3d_relabel_corners(box); sp_canvas_end_forced_full_redraws(desktop->canvas); sp_desktop_selection(desktop)->set(bc->item); sp_document_done(sp_desktop_document(desktop), SP_VERB_CONTEXT_3DBOX, _("Create 3D box")); bc->item = NULL; } bc->ctrl_dragged = false; bc->extruded = false; } void sp_box3d_context_update_lines(SPEventContext *ec) { /* update perspective lines if we are in the 3D box tool (so that infinite ones are shown correctly) */ if (SP_IS_BOX3D_CONTEXT (ec)) { Box3DContext *bc = SP_BOX3D_CONTEXT (ec); bc->_vpdrag->updateLines(); } } /* 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:encoding=utf-8:textwidth=99 :