diff options
Diffstat (limited to 'src/ui/tools/box3d-tool.cpp')
| -rw-r--r-- | src/ui/tools/box3d-tool.cpp | 570 |
1 files changed, 570 insertions, 0 deletions
diff --git a/src/ui/tools/box3d-tool.cpp b/src/ui/tools/box3d-tool.cpp new file mode 100644 index 0000000..a9d972c --- /dev/null +++ b/src/ui/tools/box3d-tool.cpp @@ -0,0 +1,570 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * 3D box drawing context + * + * Author: + * Lauris Kaplinski <lauris@kaplinski.com> + * bulia byak <buliabyak@users.sf.net> + * Jon A. Cruz <jon@joncruz.org> + * Abhishek Sharma + * + * 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 v2+, read the file 'COPYING' for more information. + */ + +#include <gdk/gdkkeysyms.h> +#include <glibmm/i18n.h> + + +#include "context-fns.h" +#include "desktop-style.h" +#include "desktop.h" +#include "document-undo.h" +#include "document.h" +#include "message-context.h" +#include "perspective-line.h" +#include "selection-chemistry.h" +#include "selection.h" + +#include "include/macros.h" + +#include "object/box3d-side.h" +#include "object/box3d.h" +#include "object/sp-defs.h" +#include "object/sp-namedview.h" + +#include "ui/icon-names.h" +#include "ui/shape-editor.h" +#include "ui/tools/box3d-tool.h" + +using Inkscape::DocumentUndo; + +namespace Inkscape { +namespace UI { +namespace Tools { + +Box3dTool::Box3dTool(SPDesktop *desktop) + : ToolBase(desktop, "/tools/shapes/3dbox", "box.svg") + , _vpdrag(nullptr) + , box3d(nullptr) + , ctrl_dragged(false) + , extruded(false) +{ + this->shape_editor = new ShapeEditor(_desktop); + + SPItem *item = desktop->getSelection()->singleItem(); + if (item) { + this->shape_editor->set_item(item); + } + + this->sel_changed_connection.disconnect(); + this->sel_changed_connection = desktop->getSelection()->connectChanged( + sigc::mem_fun(*this, &Box3dTool::selection_changed) + ); + + this->_vpdrag = new Box3D::VPDrag(desktop->getDocument()); + + Inkscape::Preferences *prefs = Inkscape::Preferences::get(); + + if (prefs->getBool("/tools/shapes/selcue")) { + this->enableSelectionCue(); + } + + if (prefs->getBool("/tools/shapes/gradientdrag")) { + this->enableGrDrag(); + } +} + +Box3dTool::~Box3dTool() { + ungrabCanvasEvents(); + this->finishItem(); + this->sel_changed_connection.disconnect(); + + this->enableGrDrag(false); + + delete (this->_vpdrag); + this->_vpdrag = nullptr; + + delete this->shape_editor; + this->shape_editor = nullptr; +} + +/** + * Callback that processes the "changed" signal on the selection; + * destroys old and creates new knotholder. + */ +void Box3dTool::selection_changed(Inkscape::Selection* selection) { + this->shape_editor->unset_item(); + this->shape_editor->set_item(selection->singleItem()); + + if (selection->perspList().size() == 1) { + // selecting a single box changes the current perspective + _desktop->doc()->setCurrentPersp3D(selection->perspList().front()); + } +} + +/* Create a default perspective in document defs if none is present (which can happen, among other + * circumstances, after 'vacuum defs' or when a pre-0.46 file is opened). + */ +static void sp_box3d_context_ensure_persp_in_defs(SPDocument *document) +{ + auto defs = document->getDefs(); + + bool has_persp = false; + for (auto &child : defs->children) { + if (is<Persp3D>(&child)) { + has_persp = true; + break; + } + } + + if (!has_persp) { + document->setCurrentPersp3D(Persp3D::create_xml_element (document)); + } +} + +bool Box3dTool::item_handler(SPItem* item, GdkEvent* event) { + gint ret = FALSE; + + switch (event->type) { + case GDK_BUTTON_PRESS: + if ( event->button.button == 1) { + this->setup_for_drag_start(event); + //ret = TRUE; + } + break; + // motion and release are always on root (why?) + default: + break; + } + +// if (((ToolBaseClass *) sp_box3d_context_parent_class)->item_handler) { +// ret = ((ToolBaseClass *) sp_box3d_context_parent_class)->item_handler(event_context, item, event); +// } + // CPPIFY: ret is always overwritten... + ret = ToolBase::item_handler(item, event); + + return ret; +} + +bool Box3dTool::root_handler(GdkEvent* event) { + static bool dragging; + + SPDocument *document = _desktop->getDocument(); + auto const y_dir = _desktop->yaxisdir(); + Inkscape::Selection *selection = _desktop->getSelection(); + Inkscape::Preferences *prefs = Inkscape::Preferences::get(); + int const snaps = prefs->getInt("/options/rotationsnapsperpi/value", 12); + + Persp3D *cur_persp = document->getCurrentPersp3D(); + + this->tolerance = prefs->getIntLimited("/options/dragtolerance/value", 0, 0, 100); + + gint ret = FALSE; + switch (event->type) { + case GDK_BUTTON_PRESS: + if ( event->button.button == 1) { + Geom::Point const button_w(event->button.x, event->button.y); + Geom::Point button_dt(_desktop->w2d(button_w)); + + // save drag origin + this->xp = (gint) button_w[Geom::X]; + this->yp = (gint) button_w[Geom::Y]; + this->within_tolerance = true; + + // remember clicked box3d, *not* disregarding groups (since a 3D box is a group), honoring Alt + this->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; + + SnapManager &m = _desktop->namedview->snap_manager; + m.setup(_desktop, true, this->box3d); + m.freeSnapReturnByRef(button_dt, Inkscape::SNAPSOURCE_NODE_HANDLE); + m.unSetup(); + this->center = button_dt; + + this->drag_origin = button_dt; + this->drag_ptB = button_dt; + this->drag_ptC = button_dt; + + // This can happen after saving when the last remaining perspective was purged and must be recreated. + if (!cur_persp) { + sp_box3d_context_ensure_persp_in_defs(document); + cur_persp = document->getCurrentPersp3D(); + } + + /* Projective preimages of clicked point under current perspective */ + this->drag_origin_proj = cur_persp->perspective_impl->tmat.preimage (button_dt, 0, Proj::Z); + this->drag_ptB_proj = this->drag_origin_proj; + this->drag_ptC_proj = this->drag_origin_proj; + this->drag_ptC_proj.normalize(); + this->drag_ptC_proj[Proj::Z] = 0.25; + + grabCanvasEvents(); + ret = TRUE; + } + break; + + case GDK_MOTION_NOTIFY: + if (dragging && ( event->motion.state & GDK_BUTTON1_MASK )) { + if (!cur_persp) { + // Can happen if perspective is deleted while dragging, e.g. on document closure. + ret = true; + break; + } + if ( this->within_tolerance + && ( abs( (gint) event->motion.x - this->xp ) < this->tolerance ) + && ( abs( (gint) event->motion.y - this->yp ) < this->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) + this->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, this->box3d); + m.freeSnapReturnByRef(motion_dt, Inkscape::SNAPSOURCE_NODE_HANDLE); + this->ctrl_dragged = event->motion.state & GDK_CONTROL_MASK; + + if ((event->motion.state & GDK_SHIFT_MASK) && !this->extruded && this->box3d) { + // once shift is pressed, set this->extruded + this->extruded = true; + } + + if (!this->extruded) { + this->drag_ptB = motion_dt; + this->drag_ptC = motion_dt; + + this->drag_ptB_proj = cur_persp->perspective_impl->tmat.preimage (motion_dt, 0, Proj::Z); + this->drag_ptC_proj = this->drag_ptB_proj; + this->drag_ptC_proj.normalize(); + this->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 (!this->ctrl_dragged) { + /* snapping */ + Box3D::PerspectiveLine pline (this->drag_ptB, Proj::Z, document->getCurrentPersp3D()); + this->drag_ptC = pline.closest_to (motion_dt); + + this->drag_ptB_proj.normalize(); + this->drag_ptC_proj = cur_persp->perspective_impl->tmat.preimage (this->drag_ptC, this->drag_ptB_proj[Proj::X], Proj::X); + } else { + this->drag_ptC = motion_dt; + + this->drag_ptB_proj.normalize(); + this->drag_ptC_proj = cur_persp->perspective_impl->tmat.preimage (motion_dt, this->drag_ptB_proj[Proj::X], Proj::X); + } + + m.freeSnapReturnByRef(this->drag_ptC, Inkscape::SNAPSOURCE_NODE_HANDLE); + } + + m.unSetup(); + + this->drag(event->motion.state); + + ret = TRUE; + } else if (!this->sp_event_context_knot_mouseover()) { + SnapManager &m = _desktop->namedview->snap_manager; + m.setup(_desktop); + + Geom::Point const motion_w(event->motion.x, event->motion.y); + Geom::Point motion_dt(_desktop->w2d(motion_w)); + m.preSnap(Inkscape::SnapCandidatePoint(motion_dt, Inkscape::SNAPSOURCE_NODE_HANDLE)); + m.unSetup(); + } + break; + + case GDK_BUTTON_RELEASE: + this->xp = this->yp = 0; + + if (event->button.button == 1) { + dragging = false; + this->discard_delayed_snap_event(); + + if (!this->within_tolerance) { + // we've been dragging (or switched tools if !box3d), finish the box + if (this->box3d) { + _desktop->getSelection()->set(this->box3d); // Updating the selection will send signals to the box3d-toolbar ... + } + this->finishItem(); // .. but finishItem() will be called from the deconstructor too and shall NOT fire such signals! + } else if (this->item_to_select) { + // no dragging, select clicked box3d if any + if (event->button.state & GDK_SHIFT_MASK) { + selection->toggle(this->item_to_select); + } else { + selection->set(this->item_to_select); + } + } else { + // click in an empty space + selection->clear(); + } + + this->item_to_select = nullptr; + ret = TRUE; + ungrabCanvasEvents(); + } + break; + + case GDK_KEY_PRESS: + switch (get_latin_keyval (&event->key)) { + case GDK_KEY_Up: + case GDK_KEY_Down: + case GDK_KEY_KP_Up: + case GDK_KEY_KP_Down: + // prevent the zoom field from activation + if (!MOD__CTRL_ONLY(event)) + ret = TRUE; + break; + + case GDK_KEY_bracketright: + document->getCurrentPersp3D()->rotate_VP (Proj::X, 180 / snaps * y_dir, MOD__ALT(event)); + DocumentUndo::done(document, _("Change perspective (angle of PLs)"), INKSCAPE_ICON("draw-cuboid")); + ret = true; + break; + + case GDK_KEY_bracketleft: + document->getCurrentPersp3D()->rotate_VP (Proj::X, -180 / snaps * y_dir, MOD__ALT(event)); + DocumentUndo::done(document, _("Change perspective (angle of PLs)"), INKSCAPE_ICON("draw-cuboid")); + ret = true; + break; + + case GDK_KEY_parenright: + document->getCurrentPersp3D()->rotate_VP (Proj::Y, 180 / snaps * y_dir, MOD__ALT(event)); + DocumentUndo::done(document, _("Change perspective (angle of PLs)"), INKSCAPE_ICON("draw-cuboid")); + ret = true; + break; + + case GDK_KEY_parenleft: + document->getCurrentPersp3D()->rotate_VP (Proj::Y, -180 / snaps * y_dir, MOD__ALT(event)); + DocumentUndo::done(document, _("Change perspective (angle of PLs)"), INKSCAPE_ICON("draw-cuboid")); + ret = true; + break; + + case GDK_KEY_braceright: + document->getCurrentPersp3D()->rotate_VP (Proj::Z, 180 / snaps * y_dir, MOD__ALT(event)); + DocumentUndo::done(document, _("Change perspective (angle of PLs)"), INKSCAPE_ICON("draw-cuboid")); + ret = true; + break; + + case GDK_KEY_braceleft: + document->getCurrentPersp3D()->rotate_VP (Proj::Z, -180 / snaps * y_dir, MOD__ALT(event)); + DocumentUndo::done(document, _("Change perspective (angle of PLs)"), INKSCAPE_ICON("draw-cuboid")); + ret = true; + break; + + case GDK_KEY_g: + case GDK_KEY_G: + if (MOD__SHIFT_ONLY(event)) { + _desktop->getSelection()->toGuides(); + ret = true; + } + break; + + case GDK_KEY_p: + case GDK_KEY_P: + if (MOD__SHIFT_ONLY(event)) { + if (document->getCurrentPersp3D()) { + document->getCurrentPersp3D()->print_debugging_info(); + } + ret = true; + } + break; + + case GDK_KEY_x: + case GDK_KEY_X: + if (MOD__ALT_ONLY(event)) { + _desktop->setToolboxFocusTo("box3d-angle-x"); + ret = TRUE; + } + if (MOD__SHIFT_ONLY(event)) { + Persp3D::toggle_VPs(selection->perspList(), Proj::X); + this->_vpdrag->updateLines(); // FIXME: Shouldn't this be done automatically? + ret = true; + } + break; + + case GDK_KEY_y: + case GDK_KEY_Y: + if (MOD__SHIFT_ONLY(event)) { + Persp3D::toggle_VPs(selection->perspList(), Proj::Y); + this->_vpdrag->updateLines(); // FIXME: Shouldn't this be done automatically? + ret = true; + } + break; + + case GDK_KEY_z: + case GDK_KEY_Z: + if (MOD__SHIFT_ONLY(event)) { + Persp3D::toggle_VPs(selection->perspList(), Proj::Z); + this->_vpdrag->updateLines(); // FIXME: Shouldn't this be done automatically? + ret = true; + } + break; + + case GDK_KEY_Escape: + _desktop->getSelection()->clear(); + //TODO: make dragging escapable by Esc + break; + + case GDK_KEY_space: + if (dragging) { + ungrabCanvasEvents(); + dragging = false; + this->discard_delayed_snap_event(); + if (!this->within_tolerance) { + // we've been dragging (or switched tools if !box3d), finish the box + if (this->box3d) { + _desktop->getSelection()->set(this->box3d); // Updating the selection will send signals to the box3d-toolbar ... + } + this->finishItem(); // .. but finishItem() will be called from the deconstructor too and shall NOT fire such signals! + } + // do not return true, so that space would work switching to selector + } + break; + + case GDK_KEY_Delete: + case GDK_KEY_KP_Delete: + case GDK_KEY_BackSpace: + ret = this->deleteSelectedDrag(MOD__CTRL_ONLY(event)); + break; + + default: + break; + } + break; + + default: + break; + } + + if (!ret) { + ret = ToolBase::root_handler(event); + } + + return ret; +} + +void Box3dTool::drag(guint /*state*/) { + if (!this->box3d) { + if (Inkscape::have_viable_layer(_desktop, defaultMessageContext()) == false) { + return; + } + + // Create object + SPBox3D *box3d = SPBox3D::createBox3D(currentLayer()); + + // Set style + _desktop->applyCurrentOrToolStyle(box3d, "/tools/shapes/3dbox", false); + + this->box3d = box3d; + + // TODO: Incorporate this in box3d-side.cpp! + for (int i = 0; i < 6; ++i) { + Box3DSide *side = Box3DSide::createBox3DSide(box3d); + + 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 + Inkscape::Preferences *prefs = Inkscape::Preferences::get(); + + Glib::ustring descr = "/desktop/"; + descr += side->axes_string(); + descr += "/style"; + + Glib::ustring cur_style = prefs->getString(descr); + + bool use_current = prefs->getBool("/tools/shapes/3dbox/usecurrent", false); + + if (use_current && !cur_style.empty()) { + // use last used style + side->setAttribute("style", cur_style); + } else { + // use default style + Glib::ustring tool_path = Glib::ustring::compose("/tools/shapes/3dbox/%1", + side->axes_string()); + _desktop->applyCurrentOrToolStyle(side, tool_path, false); + } + + side->updateRepr(); // calls Box3DSide::write() and updates, e.g., the axes string description + } + + this->box3d->set_z_orders(); + this->box3d->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" + /* this._vpdrag->updateDraggers(); */ + } + + g_assert(this->box3d); + + this->box3d->orig_corner0 = this->drag_origin_proj; + this->box3d->orig_corner7 = this->drag_ptC_proj; + + this->box3d->check_for_swapped_coords(); + + /* we need to call this from here (instead of from SPBox3D::position_set(), for example) + because z-order setting must not interfere with display updates during undo/redo */ + this->box3d->set_z_orders (); + + this->box3d->position_set(); + + // status text + this->message_context->setF(Inkscape::NORMAL_MESSAGE, "%s", _("<b>3D Box</b>; with <b>Shift</b> to extrude along the Z axis")); +} + +void Box3dTool::finishItem() { + this->message_context->clear(); + this->ctrl_dragged = false; + this->extruded = false; + + if (this->box3d != nullptr) { + SPDocument *doc = _desktop->getDocument(); + + if (!doc || !doc->getCurrentPersp3D()) { + return; + } + + this->box3d->orig_corner0 = this->drag_origin_proj; + this->box3d->orig_corner7 = this->drag_ptC_proj; + + this->box3d->updateRepr(); + + this->box3d->relabel_corners(); + + DocumentUndo::done(_desktop->getDocument(), _("Create 3D box"), INKSCAPE_ICON("draw-cuboid")); + + this->box3d = nullptr; + } +} + +} +} +} + +/* + 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 : |