Moved and renamed some tool-related files.

(bzr r12785)

1 files changed, 1252 insertions, 0 deletions

diff --git a/src/ui/tools/select-tool.cpp b/src/ui/tools/select-tool.cpp
new file mode 100644
index 000000000..498882417
--- /dev/null
+++ b/src/ui/tools/select-tool.cpp
@@ -0,0 +1,1252 @@
+/*
+ * Selection and transformation context
+ *
+ * Authors:
+ *   Lauris Kaplinski <lauris@kaplinski.com>
+ *   bulia byak <buliabyak@users.sf.net>
+ *   Abhishek Sharma
+ *   Jon A. Cruz <jon@joncruz.org>
+ *
+ * Copyright (C) 2010      authors
+ * Copyright (C) 2006      Johan Engelen <johan@shouraizou.nl>
+ * Copyright (C) 1999-2005 Authors
+ *
+ * Released under GNU GPL, read the file 'COPYING' for more information
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+#include <cstring>
+#include <string>
+#include <gdk/gdkkeysyms.h>
+#include "macros.h"
+#include "rubberband.h"
+#include "document.h"
+#include "document-undo.h"
+#include "selection.h"
+#include "sp-cursor.h"
+#include "style.h"
+#include "pixmaps/cursor-select-m.xpm"
+#include "pixmaps/cursor-select-d.xpm"
+#include "pixmaps/handles.xpm"
+#include <glibmm/i18n.h>
+
+#include "ui/tools/select-tool.h"
+#include "selection-chemistry.h"
+#ifdef WITH_DBUS
+#include "extension/dbus/document-interface.h"
+#endif
+#include "desktop.h"
+#include "desktop-handles.h"
+#include "sp-root.h"
+#include "preferences.h"
+#include "tools-switch.h"
+#include "message-stack.h"
+#include "selection-describer.h"
+#include "seltrans.h"
+#include "box3d.h"
+#include "display/sp-canvas.h"
+#include "display/sp-canvas-item.h"
+#include "display/drawing-item.h"
+#include "tool-factory.h"
+
+using Inkscape::DocumentUndo;
+
+GdkPixbuf *handles[13];
+
+namespace Inkscape {
+namespace UI {
+namespace Tools {
+
+static GdkCursor *CursorSelectMouseover = NULL;
+static GdkCursor *CursorSelectDragging = NULL;
+
+static gint rb_escaped = 0; // if non-zero, rubberband was canceled by esc, so the next button release should not deselect
+static gint drag_escaped = 0; // if non-zero, drag was canceled by esc
+
+namespace {
+	ToolBase* createSelectContext() {
+		return new SelectTool();
+	}
+
+	bool selectContextRegistered = ToolFactory::instance().registerObject("/tools/select", createSelectContext);
+}
+
+const std::string& SelectTool::getPrefsPath() {
+	return SelectTool::prefsPath;
+}
+
+const std::string SelectTool::prefsPath = "/tools/select";
+
+
+//Creates rotated variations for handles
+static void
+sp_load_handles(int start, int count, char const **xpm) {
+    handles[start] = gdk_pixbuf_new_from_xpm_data((gchar const **)xpm);
+    for(int i = start + 1; i < start + count; i++) {
+        // We use either the original at *start or previous loop item to rotate
+        handles[i] = gdk_pixbuf_rotate_simple(handles[i-1], GDK_PIXBUF_ROTATE_CLOCKWISE);
+    }
+}
+
+SelectTool::SelectTool() : ToolBase() {
+	this->grabbed = 0;
+	this->item = 0;
+
+    this->dragging = FALSE;
+    this->moved = FALSE;
+    this->button_press_shift = false;
+    this->button_press_ctrl = false;
+    this->button_press_alt = false;
+    this->cycling_items = NULL;
+    this->cycling_items_cmp = NULL;
+    this->cycling_items_selected_before = NULL;
+    this->cycling_cur_item = NULL;
+    this->cycling_wrap = true;
+    this->_seltrans = NULL;
+    this->_describer = NULL;
+
+
+    // cursors in select context
+    CursorSelectMouseover = sp_cursor_new_from_xpm(cursor_select_m_xpm , 1, 1);
+    CursorSelectDragging = sp_cursor_new_from_xpm(cursor_select_d_xpm , 1, 1);
+    
+    // selection handles
+    sp_load_handles(0, 2, handle_scale_xpm);
+    sp_load_handles(2, 2, handle_stretch_xpm);
+    sp_load_handles(4, 4, handle_rotate_xpm);
+    sp_load_handles(8, 4, handle_skew_xpm);
+    sp_load_handles(12, 1, handle_center_xpm);
+}
+
+//static gint xp = 0, yp = 0; // where drag started
+//static gint tolerance = 0;
+//static bool within_tolerance = false;
+static bool is_cycling = false;
+static bool moved_while_cycling = false;
+ToolBase *prev_event_context = NULL;
+
+
+SelectTool::~SelectTool() {
+    this->enableGrDrag(false);
+
+    if (this->grabbed) {
+        sp_canvas_item_ungrab(this->grabbed, GDK_CURRENT_TIME);
+        this->grabbed = NULL;
+    }
+
+    delete this->_seltrans;
+    this->_seltrans = NULL;
+
+    delete this->_describer;
+    this->_describer = NULL;
+
+    if (CursorSelectDragging) {
+#if GTK_CHECK_VERSION(3,0,0)
+        g_object_unref(CursorSelectDragging);
+#else
+        gdk_cursor_unref (CursorSelectDragging);
+#endif
+        CursorSelectDragging = NULL;
+    }
+    
+    if (CursorSelectMouseover) {
+#if GTK_CHECK_VERSION(3,0,0)
+        g_object_unref(CursorSelectMouseover);
+#else
+        gdk_cursor_unref (CursorSelectMouseover);
+#endif
+        CursorSelectMouseover = NULL;
+    }
+}
+
+void SelectTool::setup() {
+    ToolBase::setup();
+
+    this->_describer = new Inkscape::SelectionDescriber(
+                desktop->selection, 
+                desktop->messageStack(),
+                _("Click selection to toggle scale/rotation handles"),
+                _("No objects selected. Click, Shift+click, Alt+scroll mouse on top of objects, or drag around objects to select.")
+    );
+
+    this->_seltrans = new Inkscape::SelTrans(desktop);
+
+    sp_event_context_read(this, "show");
+    sp_event_context_read(this, "transform");
+
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+
+    if (prefs->getBool("/tools/select/gradientdrag")) {
+        this->enableGrDrag();
+    }
+}
+
+void SelectTool::set(const Inkscape::Preferences::Entry& val) {
+    Glib::ustring path = val.getEntryName();
+
+    if (path == "show") {
+        if (val.getString() == "outline") {
+            this->_seltrans->setShow(Inkscape::SelTrans::SHOW_OUTLINE);
+        } else {
+            this->_seltrans->setShow(Inkscape::SelTrans::SHOW_CONTENT);
+        }
+    }
+}
+
+bool SelectTool::sp_select_context_abort() {
+    Inkscape::SelTrans *seltrans = this->_seltrans;
+
+    if (this->dragging) {
+        if (this->moved) { // cancel dragging an object
+            seltrans->ungrab();
+            this->moved = FALSE;
+            this->dragging = FALSE;
+            sp_event_context_discard_delayed_snap_event(this);
+            drag_escaped = 1;
+
+            if (this->item) {
+                // only undo if the item is still valid
+                if (this->item->document) {
+                    DocumentUndo::undo(sp_desktop_document(desktop));
+                }
+
+                sp_object_unref( this->item, NULL);
+            } else if (this->button_press_ctrl) {
+                // NOTE:  This is a workaround to a bug.
+                // When the ctrl key is held, sc->item is not defined
+                // so in this case (only), we skip the object doc check
+                DocumentUndo::undo(sp_desktop_document(desktop));
+            }
+            this->item = NULL;
+
+            SP_EVENT_CONTEXT(this)->desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Move canceled."));
+            return true;
+        }
+    } else {
+        if (Inkscape::Rubberband::get(desktop)->is_started()) {
+            Inkscape::Rubberband::get(desktop)->stop();
+            rb_escaped = 1;
+            SP_EVENT_CONTEXT(this)->defaultMessageContext()->clear();
+            SP_EVENT_CONTEXT(this)->desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Selection canceled."));
+            return true;
+        }
+    }
+    return false;
+}
+
+static bool
+key_is_a_modifier (guint key) {
+    return (key == GDK_KEY_Alt_L ||
+                key == GDK_KEY_Alt_R ||
+                key == GDK_KEY_Control_L ||
+                key == GDK_KEY_Control_R ||
+                key == GDK_KEY_Shift_L ||
+                key == GDK_KEY_Shift_R ||
+                key == GDK_KEY_Meta_L ||  // Meta is when you press Shift+Alt (at least on my machine)
+            key == GDK_KEY_Meta_R);
+}
+
+static void
+sp_select_context_up_one_layer(SPDesktop *desktop)
+{
+    /* Click in empty place, go up one level -- but don't leave a layer to root.
+     *
+     * (Rationale: we don't usually allow users to go to the root, since that
+     * detracts from the layer metaphor: objects at the root level can in front
+     * of or behind layers.  Whereas it's fine to go to the root if editing
+     * a document that has no layers (e.g. a non-Inkscape document).)
+     *
+     * Once we support editing SVG "islands" (e.g. <svg> embedded in an xhtml
+     * document), we might consider further restricting the below to disallow
+     * leaving a layer to go to a non-layer.
+     */
+    SPObject *const current_layer = desktop->currentLayer();
+    if (current_layer) {
+        SPObject *const parent = current_layer->parent;
+        if ( parent
+             && ( parent->parent
+                  || !( SP_IS_GROUP(current_layer)
+                        && ( SPGroup::LAYER
+                             == SP_GROUP(current_layer)->layerMode() ) ) ) )
+        {
+            desktop->setCurrentLayer(parent);
+            if (SP_IS_GROUP(current_layer) && SPGroup::LAYER != SP_GROUP(current_layer)->layerMode())
+                sp_desktop_selection(desktop)->set(current_layer);
+        }
+    }
+}
+
+bool SelectTool::item_handler(SPItem* item, GdkEvent* event) {
+    gint ret = FALSE;
+
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    tolerance = prefs->getIntLimited("/options/dragtolerance/value", 0, 0, 100);
+
+    // make sure we still have valid objects to move around
+    if (this->item && this->item->document == NULL) {
+        this->sp_select_context_abort();
+    }
+
+    switch (event->type) {
+        case GDK_BUTTON_PRESS:
+            if (event->button.button == 1 && !this->space_panning) {
+                /* Left mousebutton */
+
+                // save drag origin
+                xp = (gint) event->button.x;
+                yp = (gint) event->button.y;
+                within_tolerance = true;
+
+                // remember what modifiers were on before button press
+                this->button_press_shift = (event->button.state & GDK_SHIFT_MASK) ? true : false;
+                this->button_press_ctrl = (event->button.state & GDK_CONTROL_MASK) ? true : false;
+                this->button_press_alt = (event->button.state & GDK_MOD1_MASK) ? true : false;
+
+                if (event->button.state & (GDK_SHIFT_MASK | GDK_CONTROL_MASK | GDK_MOD1_MASK)) {
+                    // if shift or ctrl was pressed, do not move objects;
+                    // pass the event to root handler which will perform rubberband, shift-click, ctrl-click, ctrl-drag
+                } else {
+                    GdkWindow* window = gtk_widget_get_window (GTK_WIDGET (sp_desktop_canvas(desktop)));
+                   
+                	this->dragging = TRUE;
+                    this->moved = FALSE;
+
+                    gdk_window_set_cursor(window, CursorSelectDragging);
+
+                    desktop->canvas->forceFullRedrawAfterInterruptions(5);
+
+                    // remember the clicked item in this->item:
+                    if (this->item) {
+                        sp_object_unref(this->item, NULL);
+                        this->item = NULL;
+                    }
+
+                    this->item = sp_event_context_find_item (desktop,
+                                              Geom::Point(event->button.x, event->button.y), event->button.state & GDK_MOD1_MASK, FALSE);
+                    sp_object_ref(this->item, NULL);
+
+                    rb_escaped = drag_escaped = 0;
+
+                    if (this->grabbed) {
+                        sp_canvas_item_ungrab(this->grabbed, event->button.time);
+                        this->grabbed = NULL;
+                    }
+
+                    sp_canvas_item_grab(SP_CANVAS_ITEM(desktop->drawing),
+                                        GDK_KEY_PRESS_MASK | GDK_KEY_RELEASE_MASK | GDK_BUTTON_RELEASE_MASK | GDK_BUTTON_PRESS_MASK |
+                                        GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK,
+                                        NULL, event->button.time);
+
+                    this->grabbed = SP_CANVAS_ITEM(desktop->drawing);
+
+                    desktop->canvas->forceFullRedrawAfterInterruptions(5);
+
+                    ret = TRUE;
+                }
+            } else if (event->button.button == 3) {
+                // right click; do not eat it so that right-click menu can appear, but cancel dragging & rubberband
+                this->sp_select_context_abort();
+            }
+            break;
+
+        case GDK_ENTER_NOTIFY: {
+            if (!desktop->isWaitingCursor() && !this->dragging) {
+                GdkWindow* window = gtk_widget_get_window (GTK_WIDGET (sp_desktop_canvas(desktop)));
+
+                gdk_window_set_cursor(window, CursorSelectMouseover);
+            }
+            break;
+        }
+        case GDK_LEAVE_NOTIFY:
+        	if (!desktop->isWaitingCursor() && !this->dragging) {
+                GdkWindow* window = gtk_widget_get_window (GTK_WIDGET (sp_desktop_canvas(desktop)));
+
+                gdk_window_set_cursor(window, this->cursor);
+        	}
+            break;
+
+        case GDK_KEY_PRESS:
+            if (get_group0_keyval (&event->key) == GDK_KEY_space) {
+                if (this->dragging && this->grabbed) {
+                    /* stamping mode: show content mode moving */
+                    _seltrans->stamp();
+                    ret = TRUE;
+                }
+            } else if (get_group0_keyval (&event->key) == GDK_KEY_Tab) {
+                if (this->dragging && this->grabbed) {
+                    _seltrans->getNextClosestPoint(false);
+                    ret = TRUE;
+                }
+            } else if (get_group0_keyval (&event->key) == GDK_KEY_ISO_Left_Tab) {
+                if (this->dragging && this->grabbed) {
+                    _seltrans->getNextClosestPoint(true);
+                    ret = TRUE;
+                }
+            }
+            break;
+
+        default:
+            break;
+    }
+
+    if (!ret) {
+    	ret = ToolBase::item_handler(item, event);
+    }
+
+    return ret;
+}
+
+void SelectTool::sp_select_context_cycle_through_items(Inkscape::Selection *selection, GdkEventScroll *scroll_event, bool shift_pressed) {
+    if (!this->cycling_cur_item) {
+        return;
+    }
+
+    Inkscape::DrawingItem *arenaitem;
+    SPItem *item = SP_ITEM(this->cycling_cur_item->data);
+
+    // Deactivate current item
+    if (!g_list_find(this->cycling_items_selected_before, item) && selection->includes(item)) {
+        selection->remove(item);
+    }
+
+    arenaitem = item->get_arenaitem(desktop->dkey);
+    arenaitem->setOpacity(0.3);
+
+    // Find next item and activate it
+    GList *next;
+    if (scroll_event->direction == GDK_SCROLL_UP) {
+        next = this->cycling_cur_item->next;
+        if (next == NULL && this->cycling_wrap)
+            next = this->cycling_items;
+    } else {
+        next = this->cycling_cur_item->prev;
+        if (next == NULL && this->cycling_wrap)
+            next = g_list_last(this->cycling_items);
+    }
+
+    if (next) {
+        this->cycling_cur_item = next;
+        item = SP_ITEM(this->cycling_cur_item->data);
+    }
+
+    arenaitem = item->get_arenaitem(desktop->dkey);
+    arenaitem->setOpacity(1.0);
+
+    if (shift_pressed) {
+        selection->add(item);
+    } else {
+        selection->set(item);
+    }
+}
+
+
+static void
+sp_select_context_reset_opacities(ToolBase *event_context)
+{
+    // SPDesktop *desktop = event_context->desktop;
+	SelectTool *sc = SP_SELECT_CONTEXT(event_context);
+	Inkscape::DrawingItem *arenaitem;
+	for (GList *l = sc->cycling_items; l != NULL; l = g_list_next(l)) {
+		arenaitem = SP_ITEM(l->data)->get_arenaitem(event_context->desktop->dkey);
+		arenaitem->setOpacity(SP_SCALE24_TO_FLOAT(SP_ITEM(l->data)->style->opacity.value));
+		}
+	g_list_free(sc->cycling_items);
+	g_list_free(sc->cycling_items_selected_before);
+	g_list_free(sc->cycling_items_cmp);
+	sc->cycling_items = NULL;
+	sc->cycling_items_selected_before = NULL;
+	sc->cycling_cur_item = NULL;
+	sc->cycling_items_cmp = NULL;
+}
+
+bool SelectTool::root_handler(GdkEvent* event) {
+    SPItem *item = NULL;
+    SPItem *item_at_point = NULL, *group_at_point = NULL, *item_in_group = NULL;
+    gint ret = FALSE;
+
+    Inkscape::Selection *selection = sp_desktop_selection(desktop);
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+
+    // make sure we still have valid objects to move around
+    if (this->item && this->item->document == NULL) {
+        this->sp_select_context_abort();
+    }
+
+    switch (event->type) {
+        case GDK_2BUTTON_PRESS:
+            if (event->button.button == 1) {
+                if (!selection->isEmpty()) {
+                    SPItem *clicked_item = static_cast<SPItem *>(selection->itemList()->data);
+
+                    if (SP_IS_GROUP(clicked_item) && !SP_IS_BOX3D(clicked_item)) { // enter group if it's not a 3D box
+                        desktop->setCurrentLayer(reinterpret_cast<SPObject *>(clicked_item));
+                        sp_desktop_selection(desktop)->clear();
+                        this->dragging = false;
+                        sp_event_context_discard_delayed_snap_event(this);
+
+                        desktop->canvas->endForcedFullRedraws();
+                    } else { // switch tool
+                        Geom::Point const button_pt(event->button.x, event->button.y);
+                        Geom::Point const p(desktop->w2d(button_pt));
+                        tools_switch_by_item (desktop, clicked_item, p);
+                    }
+                } else {
+                    sp_select_context_up_one_layer(desktop);
+                }
+
+                ret = TRUE;
+            }
+            break;
+
+        case GDK_BUTTON_PRESS:
+            if (event->button.button == 1 && !this->space_panning) {
+                // save drag origin
+                xp = (gint) event->button.x;
+                yp = (gint) event->button.y;
+                within_tolerance = true;
+
+                Geom::Point const button_pt(event->button.x, event->button.y);
+                Geom::Point const p(desktop->w2d(button_pt));
+
+                if (event->button.state & GDK_MOD1_MASK) {
+                    Inkscape::Rubberband::get(desktop)->setMode(RUBBERBAND_MODE_TOUCHPATH);
+                }
+
+                Inkscape::Rubberband::get(desktop)->start(desktop, p);
+
+                if (this->grabbed) {
+                    sp_canvas_item_ungrab(this->grabbed, event->button.time);
+                    this->grabbed = NULL;
+                }
+
+                sp_canvas_item_grab(SP_CANVAS_ITEM(desktop->acetate),
+                                    GDK_KEY_PRESS_MASK | GDK_KEY_RELEASE_MASK | GDK_BUTTON_RELEASE_MASK | GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK | GDK_BUTTON_PRESS_MASK,
+                                    NULL, event->button.time);
+
+                this->grabbed = SP_CANVAS_ITEM(desktop->acetate);
+
+                // remember what modifiers were on before button press
+                this->button_press_shift = (event->button.state & GDK_SHIFT_MASK) ? true : false;
+                this->button_press_ctrl = (event->button.state & GDK_CONTROL_MASK) ? true : false;
+                this->button_press_alt = (event->button.state & GDK_MOD1_MASK) ? true : false;
+
+                this->moved = FALSE;
+
+                rb_escaped = drag_escaped = 0;
+
+                ret = TRUE;
+            } else if (event->button.button == 3) {
+                // right click; do not eat it so that right-click menu can appear, but cancel dragging & rubberband
+                this->sp_select_context_abort();
+            }
+            break;
+
+        case GDK_MOTION_NOTIFY:
+        {
+		if (is_cycling)
+			{
+			moved_while_cycling = true;
+			prev_event_context = this;
+			}
+            
+			tolerance = prefs->getIntLimited("/options/dragtolerance/value", 0, 0, 100);
+
+            if ((event->motion.state & GDK_BUTTON1_MASK) && !this->space_panning) {
+                Geom::Point const motion_pt(event->motion.x, event->motion.y);
+                Geom::Point const p(desktop->w2d(motion_pt));
+
+                if ( within_tolerance
+                     && ( abs( (gint) event->motion.x - xp ) < tolerance )
+                     && ( abs( (gint) event->motion.y - yp ) < 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 move the object, not click), then always process the
+                // motion notify coordinates as given (no snapping back to origin)
+                within_tolerance = false;
+
+                if (this->button_press_ctrl || (this->button_press_alt && !this->button_press_shift && !selection->isEmpty())) {
+                    // if it's not click and ctrl or alt was pressed (the latter with some selection
+                    // but not with shift) we want to drag rather than rubberband
+                    this->dragging = TRUE;
+
+                    GdkWindow* window = gtk_widget_get_window (GTK_WIDGET (sp_desktop_canvas(desktop)));
+
+                    gdk_window_set_cursor(window, CursorSelectDragging);
+
+                    desktop->canvas->forceFullRedrawAfterInterruptions(5);
+                }
+
+                if (this->dragging) {
+                    /* User has dragged fast, so we get events on root (lauris)*/
+                    // not only that; we will end up here when ctrl-dragging as well
+                    // and also when we started within tolerance, but trespassed tolerance outside of item
+                    Inkscape::Rubberband::get(desktop)->stop();
+                    this->defaultMessageContext()->clear();
+
+                    item_at_point = desktop->getItemAtPoint(Geom::Point(event->button.x, event->button.y), FALSE);
+
+                    if (!item_at_point) { // if no item at this point, try at the click point (bug 1012200)
+                        item_at_point = desktop->getItemAtPoint(Geom::Point(xp, yp), FALSE);
+                    }
+
+                    if (item_at_point || this->moved || this->button_press_alt) {
+                        // drag only if starting from an item, or if something is already grabbed, or if alt-dragging
+                        if (!this->moved) {
+                            item_in_group = desktop->getItemAtPoint(Geom::Point(event->button.x, event->button.y), TRUE);
+                            group_at_point = desktop->getGroupAtPoint(Geom::Point(event->button.x, event->button.y));
+
+                            if (SP_IS_LAYER(selection->single())) {
+                                group_at_point = SP_GROUP(selection->single());
+                            }
+
+                            // group-at-point is meant to be topmost item if it's a group,
+                            // not topmost group of all items at point
+                            if (group_at_point != item_in_group &&
+                                !(group_at_point && item_at_point &&
+                                  group_at_point->isAncestorOf(item_at_point))) {
+                                group_at_point = NULL;
+                            }
+
+                            // if neither a group nor an item (possibly in a group) at point are selected, set selection to the item at point
+                            if ((!item_in_group || !selection->includes(item_in_group)) &&
+                                (!group_at_point || !selection->includes(group_at_point))
+                                && !this->button_press_alt) {
+                                // select what is under cursor
+                                if (!_seltrans->isEmpty()) {
+                                    _seltrans->resetState();
+                                }
+
+                                // when simply ctrl-dragging, we don't want to go into groups
+                                if (item_at_point && !selection->includes(item_at_point)) {
+                                    selection->set(item_at_point);
+                                }
+                            } // otherwise, do not change selection so that dragging selected-within-group items, as well as alt-dragging, is possible
+
+                            _seltrans->grab(p, -1, -1, FALSE, TRUE);
+                            this->moved = TRUE;
+                        }
+
+                        if (!_seltrans->isEmpty()) {
+                            _seltrans->moveTo(p, event->button.state);
+                        }
+
+                        desktop->scroll_to_point(p);
+                        gobble_motion_events(GDK_BUTTON1_MASK);
+                        ret = TRUE;
+                    } else {
+                        this->dragging = FALSE;
+                        sp_event_context_discard_delayed_snap_event(this);
+                        desktop->canvas->endForcedFullRedraws();
+                    }
+                } else {
+                    if (Inkscape::Rubberband::get(desktop)->is_started()) {
+                        Inkscape::Rubberband::get(desktop)->move(p);
+
+                        if (Inkscape::Rubberband::get(desktop)->getMode() == RUBBERBAND_MODE_TOUCHPATH) {
+                            this->defaultMessageContext()->set(Inkscape::NORMAL_MESSAGE, _("<b>Draw over</b> objects to select them; release <b>Alt</b> to switch to rubberband selection"));
+                        } else {
+                            this->defaultMessageContext()->set(Inkscape::NORMAL_MESSAGE, _("<b>Drag around</b> objects to select them; press <b>Alt</b> to switch to touch selection"));
+                        }
+
+                        gobble_motion_events(GDK_BUTTON1_MASK);
+                    }
+                }
+            }
+            break;
+        }
+        case GDK_BUTTON_RELEASE:
+            xp = yp = 0;
+
+            if ((event->button.button == 1) && (this->grabbed) && !this->space_panning) {
+                if (this->dragging) {
+                    GdkWindow* window;
+
+                    if (this->moved) {
+                        // item has been moved
+                        _seltrans->ungrab();
+                        this->moved = FALSE;
+#ifdef WITH_DBUS
+                        dbus_send_ping(desktop, this->item);
+#endif
+                    } else if (this->item && !drag_escaped) {
+                        // item has not been moved -> simply a click, do selecting
+                        if (!selection->isEmpty()) {
+                            if (event->button.state & GDK_SHIFT_MASK) {
+                                // with shift, toggle selection
+                                _seltrans->resetState();
+                                selection->toggle(this->item);
+                            } else {
+                                SPObject* single = selection->single();
+                                // without shift, increase state (i.e. toggle scale/rotation handles)
+                                if (selection->includes(this->item)) {
+                                    _seltrans->increaseState();
+                                } else if (SP_IS_LAYER(single) && single->isAncestorOf(this->item)) {
+                                    _seltrans->increaseState();
+                                } else {
+                                    _seltrans->resetState();
+                                    selection->set(this->item);
+                                }
+                            }
+                        } else { // simple or shift click, no previous selection
+                            _seltrans->resetState();
+                            selection->set(this->item);
+                        }
+                    }
+
+                    this->dragging = FALSE;
+                    window = gtk_widget_get_window (GTK_WIDGET (sp_desktop_canvas(desktop)));
+
+                    gdk_window_set_cursor(window, CursorSelectMouseover);
+                    sp_event_context_discard_delayed_snap_event(this);
+                    desktop->canvas->endForcedFullRedraws();
+
+                    if (this->item) {
+                        sp_object_unref( this->item, NULL);
+                    }
+
+                    this->item = NULL;
+                } else {
+                    Inkscape::Rubberband *r = Inkscape::Rubberband::get(desktop);
+
+                    if (r->is_started() && !within_tolerance) {
+                        // this was a rubberband drag
+                        GSList *items = NULL;
+
+                        if (r->getMode() == RUBBERBAND_MODE_RECT) {
+                            Geom::OptRect const b = r->getRectangle();
+                            items = sp_desktop_document(desktop)->getItemsInBox(desktop->dkey, *b);
+                        } else if (r->getMode() == RUBBERBAND_MODE_TOUCHPATH) {
+                            items = sp_desktop_document(desktop)->getItemsAtPoints(desktop->dkey, r->getPoints());
+                        }
+
+                        _seltrans->resetState();
+                        r->stop();
+                        this->defaultMessageContext()->clear();
+
+                        if (event->button.state & GDK_SHIFT_MASK) {
+                            // with shift, add to selection
+                            selection->addList (items);
+                        } else {
+                            // without shift, simply select anew
+                            selection->setList (items);
+                        }
+
+                        g_slist_free (items);
+                    } else { // it was just a click, or a too small rubberband
+                        r->stop();
+
+                        if (this->button_press_shift && !rb_escaped && !drag_escaped) {
+                            // this was a shift+click or alt+shift+click, select what was clicked upon
+                            this->button_press_shift = false;
+
+                            if (this->button_press_ctrl) {
+                                // go into groups, honoring Alt
+                                item = sp_event_context_find_item (desktop,
+                                                   Geom::Point(event->button.x, event->button.y), event->button.state & GDK_MOD1_MASK, TRUE);
+                                this->button_press_ctrl = FALSE;
+                            } else {
+                                // don't go into groups, honoring Alt
+                                item = sp_event_context_find_item (desktop,
+                                                   Geom::Point(event->button.x, event->button.y), event->button.state & GDK_MOD1_MASK, FALSE);
+                            }
+
+                            if (item) {
+                                selection->toggle(item);
+                                item = NULL;
+                            }
+
+                        } else if ((this->button_press_ctrl || this->button_press_alt) && !rb_escaped && !drag_escaped) { // ctrl+click, alt+click
+                            item = sp_event_context_find_item (desktop,
+                                         Geom::Point(event->button.x, event->button.y), this->button_press_alt, this->button_press_ctrl);
+
+                            this->button_press_ctrl = FALSE;
+                            this->button_press_alt = FALSE;
+
+                            if (item) {
+                                if (selection->includes(item)) {
+                                    _seltrans->increaseState();
+                                } else {
+                                    _seltrans->resetState();
+                                    selection->set(item);
+                                }
+
+                                item = NULL;
+                            }
+                        } else { // click without shift, simply deselect, unless with Alt or something was cancelled
+                            if (!selection->isEmpty()) {
+                                if (!(rb_escaped) && !(drag_escaped) && !(event->button.state & GDK_MOD1_MASK)) {
+                                    selection->clear();
+                                }
+
+                                rb_escaped = 0;
+                                ret = TRUE;
+                            }
+                        }
+                    }
+
+                    ret = TRUE;
+                }
+
+                if (this->grabbed) {
+                    sp_canvas_item_ungrab(this->grabbed, event->button.time);
+                    this->grabbed = NULL;
+                }
+
+                desktop->updateNow();
+            }
+
+            if (event->button.button == 1) {
+                Inkscape::Rubberband::get(desktop)->stop(); // might have been started in another tool!
+            }
+
+            this->button_press_shift = false;
+            this->button_press_ctrl = false;
+            this->button_press_alt = false;
+            break;
+
+        case GDK_SCROLL: {
+            GdkEventScroll *scroll_event = (GdkEventScroll*) event;
+
+            if (scroll_event->state & GDK_MOD1_MASK) { // alt modified pressed
+        if (moved_while_cycling) 
+            {
+            moved_while_cycling = false;
+            sp_select_context_reset_opacities(prev_event_context);
+            prev_event_context = NULL;
+            }
+
+        is_cycling = true;
+        
+                bool shift_pressed = scroll_event->state & GDK_SHIFT_MASK;
+
+                /* Rebuild list of items underneath the mouse pointer */
+                Geom::Point p = desktop->d2w(desktop->point());
+                SPItem *item = desktop->getItemAtPoint(p, true, NULL);
+
+                // Save pointer to current cycle-item so that we can find it again later, in the freshly built list
+                SPItem *tmp_cur_item = this->cycling_cur_item ? SP_ITEM(this->cycling_cur_item->data) : NULL;
+                g_list_free(this->cycling_items);
+                this->cycling_items = NULL;
+                this->cycling_cur_item = NULL;
+
+                while(item != NULL) {
+                    this->cycling_items = g_list_append(this->cycling_items, item);
+                    item = desktop->getItemAtPoint(p, true, item);
+                }
+
+                /* Compare current item list with item list during previous scroll ... */
+                GList *l1, *l2;
+                bool item_lists_differ = false;
+
+                // Note that we can do an 'or' comparison in the loop because it is safe to call g_list_next with a NULL pointer.
+                for (l1 = this->cycling_items, l2 = this->cycling_items_cmp; l1 != NULL || l2 != NULL; l1 = g_list_next(l1), l2 = g_list_next(l2)) {
+                    if ((l1 !=NULL && l2 == NULL) || (l1 == NULL && l2 != NULL) || (l1->data != l2->data)) {
+                        item_lists_differ = true;
+                        break;
+                    }
+                }
+
+                /* If list of items under mouse pointer hasn't changed ... */
+                if (!item_lists_differ) {
+                    // ... find current item in the freshly built list and continue cycling ...
+                    // TODO: This wouldn't be necessary if cycling_cur_item pointed to an element of cycling_items_cmp instead
+                    this->cycling_cur_item = g_list_find(this->cycling_items, tmp_cur_item);
+                    g_assert(this->cycling_cur_item != NULL || this->cycling_items == NULL);
+                } else {
+                    // ... otherwise reset opacities for outdated items ...
+                    Inkscape::DrawingItem *arenaitem;
+
+                    for(GList *l = this->cycling_items_cmp; l != NULL; l = l->next) {
+                        arenaitem = SP_ITEM(l->data)->get_arenaitem(desktop->dkey);
+                        arenaitem->setOpacity(1.0);
+                        //if (!shift_pressed && !g_list_find(this->cycling_items_selected_before, SP_ITEM(l->data)) && selection->includes(SP_ITEM(l->data)))
+                        if (!g_list_find(this->cycling_items_selected_before, SP_ITEM(l->data)) && selection->includes(SP_ITEM(l->data))) {
+                            selection->remove(SP_ITEM(l->data));
+                        }
+                    }
+
+                    // ... clear the lists ...
+                    g_list_free(this->cycling_items_cmp);
+                    g_list_free(this->cycling_items_selected_before);
+
+                    this->cycling_items_cmp = NULL;
+                    this->cycling_items_selected_before = NULL;
+                    this->cycling_cur_item = NULL;
+
+                    // ... and rebuild them with the new items.
+                    this->cycling_items_cmp = g_list_copy(this->cycling_items);
+                    SPItem *item;
+
+                    for(GList *l = this->cycling_items; l != NULL; l = l->next) {
+                        item = SP_ITEM(l->data);
+                        arenaitem = item->get_arenaitem(desktop->dkey);
+                        arenaitem->setOpacity(0.3);
+
+                        if (selection->includes(item)) {
+                            // already selected items are stored separately, too
+                            this->cycling_items_selected_before = g_list_append(this->cycling_items_selected_before, item);
+                        }
+                    }
+
+                    // set the current item to the bottommost one so that the cycling step below re-starts at the top
+                    this->cycling_cur_item = g_list_last(this->cycling_items);
+                }
+
+                this->cycling_wrap = prefs->getBool("/options/selection/cycleWrap", true);
+
+                // Cycle through the items underneath the mouse pointer, one-by-one
+                this->sp_select_context_cycle_through_items(selection, scroll_event, shift_pressed);
+
+                ret = TRUE;
+
+        GtkWindow *w =GTK_WINDOW(gtk_widget_get_toplevel( GTK_WIDGET(desktop->canvas) ));
+        if (w)
+            {
+            gtk_window_present(w);
+            gtk_widget_grab_focus (GTK_WIDGET(desktop->canvas)); 
+            }
+            }
+            break;
+        }
+
+        case GDK_KEY_PRESS: // keybindings for select context
+			{
+			{
+        	guint keyval = get_group0_keyval(&event->key);
+        	
+                bool alt = ( MOD__ALT(event)
+                                    || (keyval == GDK_KEY_Alt_L)
+                                    || (keyval == GDK_KEY_Alt_R)
+                                    || (keyval == GDK_KEY_Meta_L)
+                                    || (keyval == GDK_KEY_Meta_R));
+
+            if (!key_is_a_modifier (keyval)) {
+                    this->defaultMessageContext()->clear();
+            } else if (this->grabbed || _seltrans->isGrabbed()) {
+                if (Inkscape::Rubberband::get(desktop)->is_started()) {
+                    // if Alt then change cursor to moving cursor:
+                    if (alt) {
+                        Inkscape::Rubberband::get(desktop)->setMode(RUBBERBAND_MODE_TOUCHPATH);
+                    }
+                } else {
+                // do not change the statusbar text when mousekey is down to move or transform the object,
+                // because the statusbar text is already updated somewhere else.
+                   break;
+                }
+            } else {
+                    sp_event_show_modifier_tip (this->defaultMessageContext(), event,
+                                                _("<b>Ctrl</b>: click to select in groups; drag to move hor/vert"),
+                                                _("<b>Shift</b>: click to toggle select; drag for rubberband selection"),
+                                                _("<b>Alt</b>: click to select under; scroll mouse-wheel to cycle-select; drag to move selected or select by touch"));
+                    
+                    // if Alt and nonempty selection, show moving cursor ("move selected"):
+                    if (alt && !selection->isEmpty() && !desktop->isWaitingCursor()) {
+                    	GdkWindow* window = gtk_widget_get_window (GTK_WIDGET (sp_desktop_canvas(desktop)));
+
+                        gdk_window_set_cursor(window, CursorSelectDragging);
+                    }
+                    //*/
+                    break;
+            }
+            }
+
+            gdouble const nudge = prefs->getDoubleLimited("/options/nudgedistance/value", 2, 0, 1000, "px"); // in px
+            gdouble const offset = prefs->getDoubleLimited("/options/defaultscale/value", 2, 0, 1000, "px");
+            int const snaps = prefs->getInt("/options/rotationsnapsperpi/value", 12);
+
+            switch (get_group0_keyval (&event->key)) {
+                case GDK_KEY_Left: // move selection left
+                case GDK_KEY_KP_Left:
+                    if (!MOD__CTRL(event)) { // not ctrl
+                        gint mul = 1 + gobble_key_events( get_group0_keyval(&event->key), 0); // with any mask
+                        
+                        if (MOD__ALT(event)) { // alt
+                            if (MOD__SHIFT(event)) {
+                            	sp_selection_move_screen(sp_desktop_selection(desktop), mul*-10, 0); // shift
+                            } else {
+                            	sp_selection_move_screen(sp_desktop_selection(desktop), mul*-1, 0); // no shift
+                            }
+                        } else { // no alt
+                            if (MOD__SHIFT(event)) {
+                            	sp_selection_move(sp_desktop_selection(desktop), mul*-10*nudge, 0); // shift
+                            } else {
+                            	sp_selection_move(sp_desktop_selection(desktop), mul*-nudge, 0); // no shift
+                            }
+                        }
+                        
+                        ret = TRUE;
+                    }
+                    break;
+                    
+                case GDK_KEY_Up: // move selection up
+                case GDK_KEY_KP_Up:
+                    if (!MOD__CTRL(event)) { // not ctrl
+                        gint mul = 1 + gobble_key_events(get_group0_keyval(&event->key), 0); // with any mask
+                        
+                        if (MOD__ALT(event)) { // alt
+                            if (MOD__SHIFT(event)) {
+                            	sp_selection_move_screen(sp_desktop_selection(desktop), 0, mul*10); // shift
+                            } else {
+                            	sp_selection_move_screen(sp_desktop_selection(desktop), 0, mul*1); // no shift
+                            }
+                        } else { // no alt
+                            if (MOD__SHIFT(event)) {
+                            	sp_selection_move(sp_desktop_selection(desktop), 0, mul*10*nudge); // shift
+                            } else {
+                            	sp_selection_move(sp_desktop_selection(desktop), 0, mul*nudge); // no shift
+                            }
+                        }
+                        
+                        ret = TRUE;
+                    }
+                    break;
+                    
+                case GDK_KEY_Right: // move selection right
+                case GDK_KEY_KP_Right:
+                    if (!MOD__CTRL(event)) { // not ctrl
+                        gint mul = 1 + gobble_key_events(get_group0_keyval(&event->key), 0); // with any mask
+                        
+                        if (MOD__ALT(event)) { // alt
+                            if (MOD__SHIFT(event)) {
+                            	sp_selection_move_screen(sp_desktop_selection(desktop), mul*10, 0); // shift
+                            } else {
+                            	sp_selection_move_screen(sp_desktop_selection(desktop), mul*1, 0); // no shift
+                            }
+                        } else { // no alt
+                            if (MOD__SHIFT(event)) {
+                            	sp_selection_move(sp_desktop_selection(desktop), mul*10*nudge, 0); // shift
+                            } else {
+                            	sp_selection_move(sp_desktop_selection(desktop), mul*nudge, 0); // no shift
+                            }
+                        }
+                        
+                        ret = TRUE;
+                    }
+                    break;
+                    
+                case GDK_KEY_Down: // move selection down
+                case GDK_KEY_KP_Down:
+                    if (!MOD__CTRL(event)) { // not ctrl
+                        gint mul = 1 + gobble_key_events(get_group0_keyval(&event->key), 0); // with any mask
+                        
+                        if (MOD__ALT(event)) { // alt
+                            if (MOD__SHIFT(event)) {
+                            	sp_selection_move_screen(sp_desktop_selection(desktop), 0, mul*-10); // shift
+                            } else {
+                            	sp_selection_move_screen(sp_desktop_selection(desktop), 0, mul*-1); // no shift
+                            }
+                        } else { // no alt
+                            if (MOD__SHIFT(event)) {
+                            	sp_selection_move(sp_desktop_selection(desktop), 0, mul*-10*nudge); // shift
+                            } else {
+                            	sp_selection_move(sp_desktop_selection(desktop), 0, mul*-nudge); // no shift
+                            }
+                        }
+                        
+                        ret = TRUE;
+                    }
+                    break;
+                    
+                case GDK_KEY_Escape:
+                    if (!this->sp_select_context_abort()) {
+                        selection->clear();
+                    }
+                    
+                    ret = TRUE;
+                    break;
+
+                case GDK_KEY_a:
+                case GDK_KEY_A:
+                    if (MOD__CTRL_ONLY(event)) {
+                        sp_edit_select_all(desktop);
+                        ret = TRUE;
+                    }
+                    break;
+                    
+                case GDK_KEY_space:
+                    /* stamping mode: show outline mode moving */
+                    /* FIXME: Is next condition ok? (lauris) */
+                    if (this->dragging && this->grabbed) {
+                        _seltrans->stamp();
+                        ret = TRUE;
+                    }
+                    break;
+                    
+                case GDK_KEY_x:
+                case GDK_KEY_X:
+                    if (MOD__ALT_ONLY(event)) {
+                        desktop->setToolboxFocusTo ("altx");
+                        ret = TRUE;
+                    }
+                    break;
+                    
+                case GDK_KEY_bracketleft:
+                    if (MOD__ALT(event)) {
+                        gint mul = 1 + gobble_key_events(get_group0_keyval(&event->key), 0); // with any mask
+                        sp_selection_rotate_screen(selection, mul*1);
+                    } else if (MOD__CTRL(event)) {
+                        sp_selection_rotate(selection, 90);
+                    } else if (snaps) {
+                        sp_selection_rotate(selection, 180.0/snaps);
+                    }
+                    
+                    ret = TRUE;
+                    break;
+                    
+                case GDK_KEY_bracketright:
+                    if (MOD__ALT(event)) {
+                        gint mul = 1 + gobble_key_events(get_group0_keyval(&event->key), 0); // with any mask
+                        sp_selection_rotate_screen(selection, -1*mul);
+                    } else if (MOD__CTRL(event)) {
+                        sp_selection_rotate(selection, -90);
+                    } else if (snaps) {
+                        sp_selection_rotate(selection, -180.0/snaps);
+                    }
+                    
+                    ret = TRUE;
+                    break;
+                    
+                case GDK_KEY_less:
+                case GDK_KEY_comma:
+                    if (MOD__ALT(event)) {
+                        gint mul = 1 + gobble_key_events(get_group0_keyval(&event->key), 0); // with any mask
+                        sp_selection_scale_screen(selection, -2*mul);
+                    } else if (MOD__CTRL(event)) {
+                        sp_selection_scale_times(selection, 0.5);
+                    } else {
+                        gint mul = 1 + gobble_key_events(get_group0_keyval(&event->key), 0); // with any mask
+                        sp_selection_scale(selection, -offset*mul);
+                    }
+                    
+                    ret = TRUE;
+                    break;
+                    
+                case GDK_KEY_greater:
+                case GDK_KEY_period:
+                    if (MOD__ALT(event)) {
+                        gint mul = 1 + gobble_key_events(get_group0_keyval(&event->key), 0); // with any mask
+                        sp_selection_scale_screen(selection, 2*mul);
+                    } else if (MOD__CTRL(event)) {
+                        sp_selection_scale_times(selection, 2);
+                    } else {
+                        gint mul = 1 + gobble_key_events(get_group0_keyval(&event->key), 0); // with any mask
+                        sp_selection_scale(selection, offset*mul);
+                    }
+                    
+                    ret = TRUE;
+                    break;
+                    
+                case GDK_KEY_Return:
+                    if (MOD__CTRL_ONLY(event)) {
+                        if (selection->singleItem()) {
+                            SPItem *clicked_item = selection->singleItem();
+                            
+                            if ( SP_IS_GROUP(clicked_item) || SP_IS_BOX3D(clicked_item)) { // enter group or a 3D box
+                                desktop->setCurrentLayer(reinterpret_cast<SPObject *>(clicked_item));
+                                sp_desktop_selection(desktop)->clear();
+                            } else {
+                                this->desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Selected object is not a group. Cannot enter."));
+                            }
+                        }
+                        
+                        ret = TRUE;
+                    }
+                    break;
+                    
+                case GDK_KEY_BackSpace:
+                    if (MOD__CTRL_ONLY(event)) {
+                        sp_select_context_up_one_layer(desktop);
+                        ret = TRUE;
+                    }
+                    break;
+                    
+                case GDK_KEY_s:
+                case GDK_KEY_S:
+                    if (MOD__SHIFT_ONLY(event)) {
+                        if (!selection->isEmpty()) {
+                            _seltrans->increaseState();
+                        }
+                        
+                        ret = TRUE;
+                    }
+                    break;
+                    
+                case GDK_KEY_g:
+                case GDK_KEY_G:
+                    if (MOD__SHIFT_ONLY(event)) {
+                        sp_selection_to_guides(desktop);
+                        ret = true;
+                    }
+                    break;
+                    
+                default:
+                    break;
+            }
+            break;
+			}
+        case GDK_KEY_RELEASE: {
+            guint keyval = get_group0_keyval(&event->key);
+            if (key_is_a_modifier (keyval)) {
+                this->defaultMessageContext()->clear();
+            }
+            
+            bool alt = ( MOD__ALT(event)
+                         || (keyval == GDK_KEY_Alt_L)
+                         || (keyval == GDK_KEY_Alt_R)
+                         || (keyval == GDK_KEY_Meta_L)
+                         || (keyval == GDK_KEY_Meta_R));
+
+            if (Inkscape::Rubberband::get(desktop)->is_started()) {
+                // if Alt then change cursor to moving cursor:
+                if (alt) {
+                    Inkscape::Rubberband::get(desktop)->setMode(RUBBERBAND_MODE_RECT);
+                }
+            } else {
+                if (alt) { // TODO: Should we have a variable like is_cycling or is it harmless to run this piece of code each time?
+                    // quit cycle-selection and reset opacities
+			if (is_cycling)
+				{
+				sp_select_context_reset_opacities(this);
+				is_cycling = false;	
+				}
+
+                }
+            }
+
+            }
+            // set cursor to default.
+            if (!desktop->isWaitingCursor()) {
+                // Do we need to reset the cursor here on key release ?
+                //GdkWindow* window = gtk_widget_get_window (GTK_WIDGET (sp_desktop_canvas(desktop)));
+                //gdk_window_set_cursor(window, event_context->cursor);
+            }
+            break;
+
+        default:
+            break;
+    }
+
+    if (!ret) {
+    	ret = ToolBase::root_handler(event);
+    }
+
+    return ret;
+}
+
+}
+}
+}
+
+/*
+  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 :