#define __SP_SELECT_CONTEXT_C__

#ifdef HAVE_CONFIG_H

# include "config.h"

#endif

#include <gdk/gdkkeysyms.h>

#include "macros.h"

#include "rubberband.h"

#include "document.h"

#include "selection.h"

#include "seltrans-handles.h"

#include "sp-cursor.h"

#include "pixmaps/cursor-select-m.xpm"

#include "pixmaps/cursor-select-d.xpm"

#include "pixmaps/handles.xpm"

#include <glibmm/i18n.h>

#include "select-context.h"

#include "selection-chemistry.h"

#include "desktop.h"

#include "desktop-handles.h"

#include "sp-root.h"

#include "prefs-utils.h"

#include "tools-switch.h"

#include "message-stack.h"

#include "selection-describer.h"

#include "seltrans.h"

static void sp_select_context_class_init(SPSelectContextClass *klass);

static void sp_select_context_init(SPSelectContext *select_context);

static void sp_select_context_dispose(GObject *object);

static void sp_select_context_setup(SPEventContext *ec);

static void sp_select_context_set(SPEventContext *ec, gchar const *key, gchar const *val);

static gint sp_select_context_root_handler(SPEventContext *event_context, GdkEvent *event);

static gint sp_select_context_item_handler(SPEventContext *event_context, SPItem *item, GdkEvent *event);

static SPEventContextClass *parent_class;

static GdkCursor *CursorSelectMouseover = NULL;

static GdkCursor *CursorSelectDragging = NULL;

GdkPixbuf *handles[13];

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

static gint xp = 0, yp = 0; // where drag started

static gint tolerance = 0;

static bool within_tolerance = false;

sp_select_context_get_type(void)

{

static GType type = 0;

if (!type) {

GTypeInfo info = {

sizeof(SPSelectContextClass),

NULL, NULL,

(GClassInitFunc) sp_select_context_class_init,

NULL, NULL,

sizeof(SPSelectContext),

4,

(GInstanceInitFunc) sp_select_context_init,

NULL, /* value_table */

};

type = g_type_register_static(SP_TYPE_EVENT_CONTEXT, "SPSelectContext", &info, (GTypeFlags)0);

}

return type;

}

static void

sp_select_context_class_init(SPSelectContextClass *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_select_context_dispose;

event_context_class->setup = sp_select_context_setup;

event_context_class->set = sp_select_context_set;

event_context_class->root_handler = sp_select_context_root_handler;

event_context_class->item_handler = sp_select_context_item_handler;

// 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

handles[0] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_scale_nw_xpm);

handles[1] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_scale_ne_xpm);

handles[2] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_scale_h_xpm);

handles[3] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_scale_v_xpm);

handles[4] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_rotate_nw_xpm);

handles[5] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_rotate_n_xpm);

handles[6] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_rotate_ne_xpm);

handles[7] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_rotate_e_xpm);

handles[8] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_rotate_se_xpm);

handles[9] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_rotate_s_xpm);

handles[10] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_rotate_sw_xpm);

handles[11] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_rotate_w_xpm);

handles[12] = gdk_pixbuf_new_from_xpm_data((gchar const **)handle_center_xpm);

}

static void

sp_select_context_init(SPSelectContext *sc)

{

sc->dragging = FALSE;

sc->moved = FALSE;

sc->button_press_shift = false;

sc->button_press_ctrl = false;

sc->button_press_alt = false;

sc->_seltrans = NULL;

sc->_describer = NULL;

}

static void

sp_select_context_dispose(GObject *object)

{

SPSelectContext *sc = SP_SELECT_CONTEXT(object);

SPEventContext * ec = SP_EVENT_CONTEXT (object);

ec->enableGrDrag(false);

if (sc->grabbed) {

sp_canvas_item_ungrab(sc->grabbed, GDK_CURRENT_TIME);

sc->grabbed = NULL;

}

delete sc->_seltrans;

sc->_seltrans = NULL;

delete sc->_describer;

sc->_describer = NULL;

if (CursorSelectDragging) {

gdk_cursor_unref (CursorSelectDragging);

CursorSelectDragging = NULL;

}

if (CursorSelectMouseover) {

gdk_cursor_unref (CursorSelectMouseover);

CursorSelectMouseover = NULL;

}

G_OBJECT_CLASS(parent_class)->dispose(object);

}

static void

sp_select_context_setup(SPEventContext *ec)

{

SPSelectContext *select_context = SP_SELECT_CONTEXT(ec);

if (((SPEventContextClass *) parent_class)->setup) {

((SPEventContextClass *) parent_class)->setup(ec);

}

SPDesktop *desktop = ec->desktop;

select_context->_describer = new Inkscape::SelectionDescriber(desktop->selection, desktop->messageStack());

select_context->_seltrans = new Inkscape::SelTrans(desktop);

sp_event_context_read(ec, "show");

sp_event_context_read(ec, "transform");

if (prefs_get_int_attribute("tools.select", "gradientdrag", 0) != 0) {

ec->enableGrDrag();

}

}

static void

sp_select_context_set(SPEventContext *ec, gchar const *key, gchar const *val)

{

SPSelectContext *sc = SP_SELECT_CONTEXT(ec);

if (!strcmp(key, "show")) {

if (val && !strcmp(val, "outline")) {

sc->_seltrans->setShow(Inkscape::SelTrans::SHOW_OUTLINE);

} else {

sc->_seltrans->setShow(Inkscape::SelTrans::SHOW_CONTENT);

}

}

}

static bool

sp_select_context_abort(SPEventContext *event_context)

{

SPDesktop *desktop = event_context->desktop;

SPSelectContext *sc = SP_SELECT_CONTEXT(event_context);

Inkscape::SelTrans *seltrans = sc->_seltrans;

if (sc->dragging) {

if (sc->moved) { // cancel dragging an object

seltrans->ungrab();

sc->moved = FALSE;

sc->dragging = FALSE;

drag_escaped = 1;

if (sc->item) {

// only undo if the item is still valid

if (SP_OBJECT_DOCUMENT( SP_OBJECT(sc->item))) {

sp_document_undo(sp_desktop_document(desktop));

}

sp_object_unref( SP_OBJECT(sc->item), NULL);

} else if (sc->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

sp_document_undo(sp_desktop_document(desktop));

}

sc->item = NULL;

SP_EVENT_CONTEXT(sc)->desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Move canceled."));

return true;

}

} else {

NR::Maybe<NR::Rect> const b = Inkscape::Rubberband::get()->getRectangle();

if (b != NR::Nothing()) {

Inkscape::Rubberband::get()->stop();

rb_escaped = 1;

SP_EVENT_CONTEXT(sc)->desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Selection canceled."));

return true;

}

}

return false;

}

key_is_a_modifier (guint key) {

return (key == GDK_Alt_L ||

key == GDK_Alt_R ||

key == GDK_Control_L ||

key == GDK_Control_R ||

key == GDK_Shift_L ||

key == GDK_Shift_R ||

key == GDK_Meta_L || // Meta is when you press Shift+Alt (at least on my machine)

key == GDK_Meta_R);

}

sp_select_context_up_one_layer(SPDesktop *desktop)

{

/* Click in empty place, go up one level -- but don't leave a layer to root.

SPObject *const current_layer = desktop->currentLayer();

if (current_layer) {

SPObject *const parent = SP_OBJECT_PARENT(current_layer);

if ( parent

&& ( SP_OBJECT_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);

}

}

}

static gint

sp_select_context_item_handler(SPEventContext *event_context, SPItem *item, GdkEvent *event)

{

gint ret = FALSE;

SPDesktop *desktop = event_context->desktop;

SPSelectContext *sc = SP_SELECT_CONTEXT(event_context);

Inkscape::SelTrans *seltrans = sc->_seltrans;

tolerance = prefs_get_int_attribute_limited("options.dragtolerance", "value", 0, 0, 100);

// make sure we still have valid objects to move around

if (sc->item && SP_OBJECT_DOCUMENT( SP_OBJECT(sc->item))==NULL) {

sp_select_context_abort(event_context);

}

switch (event->type) {

case GDK_BUTTON_PRESS:

if (event->button.button == 1) {

/* 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

sc->button_press_shift = (event->button.state & GDK_SHIFT_MASK) ? true : false;

sc->button_press_ctrl = (event->button.state & GDK_CONTROL_MASK) ? true : false;

sc->button_press_alt = (event->button.state & GDK_MOD1_MASK) ? true : false;

if (event->button.state & (GDK_SHIFT_MASK | GDK_CONTROL_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 {

sc->dragging = TRUE;

sc->moved = FALSE;

// remember the clicked item in sc->item:

sc->item = sp_event_context_find_item (desktop,

NR::Point(event->button.x, event->button.y), event->button.state & GDK_MOD1_MASK, FALSE);

sp_object_ref(sc->item, NULL);

rb_escaped = drag_escaped = 0;

sp_canvas_item_grab(SP_CANVAS_ITEM(desktop->drawing),

GDK_KEY_PRESS_MASK | GDK_BUTTON_RELEASE_MASK | GDK_BUTTON_PRESS_MASK |

GDK_POINTER_MOTION_MASK,

NULL, event->button.time);

sc->grabbed = SP_CANVAS_ITEM(desktop->drawing);

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

sp_select_context_abort(event_context);

}

break;

case GDK_ENTER_NOTIFY:

{

GdkCursor *cursor = gdk_cursor_new(GDK_FLEUR);

gdk_window_set_cursor(GTK_WIDGET(sp_desktop_canvas(desktop))->window, cursor);

gdk_cursor_destroy(cursor);

break;

}

case GDK_LEAVE_NOTIFY:

gdk_window_set_cursor(GTK_WIDGET(sp_desktop_canvas(desktop))->window, event_context->cursor);

break;

case GDK_KEY_PRESS:

if (get_group0_keyval (&event->key) == GDK_space) {

if (sc->dragging && sc->grabbed) {

/* stamping mode: show content mode moving */

seltrans->stamp();

ret = TRUE;

}

}

break;

default:

break;

}

if (!ret) {

if (((SPEventContextClass *) parent_class)->item_handler)

ret = ((SPEventContextClass *) parent_class)->item_handler(event_context, item, event);

}

return ret;

}

static gint

sp_select_context_root_handler(SPEventContext *event_context, GdkEvent *event)

{

SPItem *item = NULL;

SPItem *item_at_point = NULL, *group_at_point = NULL, *item_in_group = NULL;

gint ret = FALSE;

SPDesktop *desktop = event_context->desktop;

SPSelectContext *sc = SP_SELECT_CONTEXT(event_context);

Inkscape::SelTrans *seltrans = sc->_seltrans;

Inkscape::Selection *selection = sp_desktop_selection(desktop);

gdouble const nudge = prefs_get_double_attribute_limited("options.nudgedistance", "value", 2, 0, 1000); // in px

gdouble const offset = prefs_get_double_attribute_limited("options.defaultscale", "value", 2, 0, 1000);

tolerance = prefs_get_int_attribute_limited("options.dragtolerance", "value", 0, 0, 100);

int const snaps = prefs_get_int_attribute("options.rotationsnapsperpi", "value", 12);

// make sure we still have valid objects to move around

if (sc->item && SP_OBJECT_DOCUMENT( SP_OBJECT(sc->item))==NULL) {

sp_select_context_abort(event_context);

}

switch (event->type) {

case GDK_2BUTTON_PRESS:

if (event->button.button == 1) {

if (!selection->isEmpty()) {

SPItem *clicked_item = (SPItem *) selection->itemList()->data;

if (SP_IS_GROUP (clicked_item)) { // enter group

desktop->setCurrentLayer(reinterpret_cast<SPObject *>(clicked_item));

sp_desktop_selection(desktop)->clear();

sc->dragging = false;

} else { // switch tool

tools_switch_by_item (desktop, clicked_item);

}

} else {

sp_select_context_up_one_layer(desktop);

}

ret = TRUE;

}

break;

case GDK_BUTTON_PRESS:

if (event->button.button == 1) {

// save drag origin

xp = (gint) event->button.x;

yp = (gint) event->button.y;

within_tolerance = true;

NR::Point const button_pt(event->button.x, event->button.y);

NR::Point const p(desktop->w2d(button_pt));

Inkscape::Rubberband::get()->start(desktop, p);

sp_canvas_item_grab(SP_CANVAS_ITEM(desktop->acetate),

GDK_KEY_PRESS_MASK | GDK_BUTTON_RELEASE_MASK | GDK_POINTER_MOTION_MASK | GDK_BUTTON_PRESS_MASK,

NULL, event->button.time);

sc->grabbed = SP_CANVAS_ITEM(desktop->acetate);

// remember what modifiers were on before button press

sc->button_press_shift = (event->button.state & GDK_SHIFT_MASK) ? true : false;

sc->button_press_ctrl = (event->button.state & GDK_CONTROL_MASK) ? true : false;

sc->button_press_alt = (event->button.state & GDK_MOD1_MASK) ? true : false;

sc->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

sp_select_context_abort(event_context);

}

break;

case GDK_MOTION_NOTIFY:

if (event->motion.state & GDK_BUTTON1_MASK) {

NR::Point const motion_pt(event->motion.x, event->motion.y);

NR::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 (sc->button_press_ctrl || sc->button_press_alt) // if ctrl or alt was pressed and it's not click, we want to drag rather than rubberband

sc->dragging = TRUE;

if (sc->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()->stop();

item_at_point = desktop->item_at_point(NR::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->item_at_point(NR::Point(xp, yp), FALSE);

if (item_at_point || sc->moved || sc->button_press_alt) {

// drag only if starting from an item, or if something is already grabbed, or if alt-dragging

if (!sc->moved) {

item_in_group = desktop->item_at_point(NR::Point(event->button.x, event->button.y), TRUE);

group_at_point = desktop->group_at_point(NR::Point(event->button.x, event->button.y));

// 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))

&& !sc->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);

sc->moved = TRUE;

}

if (!seltrans->isEmpty())

seltrans->moveTo(p, event->button.state);

if (desktop->scroll_to_point(&p))

// unfortunately in complex drawings, gobbling results in losing grab of the object, for some mysterious reason

; //gobble_motion_events(GDK_BUTTON1_MASK);

ret = TRUE;

} else {

sc->dragging = FALSE;

}

} else {

Inkscape::Rubberband::get()->move(p);

gobble_motion_events(GDK_BUTTON1_MASK);

}

}

break;

case GDK_BUTTON_RELEASE:

xp = yp = 0;

if ((event->button.button == 1) && (sc->grabbed)) {

if (sc->dragging) {

if (sc->moved) {

// item has been moved

seltrans->ungrab();

sc->moved = FALSE;

} else if (sc->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(sc->item);

} else {

// without shift, increase state (i.e. toggle scale/rotation handles)

if (selection->includes(sc->item)) {

seltrans->increaseState();

} else {

seltrans->resetState();

selection->set(sc->item);

}

}

} else { // simple or shift click, no previous selection

seltrans->resetState();

selection->set(sc->item);

}

}

sc->dragging = FALSE;

if (sc->item) {

sp_object_unref( SP_OBJECT(sc->item), NULL);

}

sc->item = NULL;

} else {

NR::Maybe<NR::Rect> const b = Inkscape::Rubberband::get()->getRectangle();

if (b != NR::Nothing() && !within_tolerance) {

// this was a rubberband drag

Inkscape::Rubberband::get()->stop();

seltrans->resetState();

// find out affected items:

GSList *items = sp_document_items_in_box(sp_desktop_document(desktop), desktop->dkey, b.assume());

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

Inkscape::Rubberband::get()->stop();

if (sc->button_press_shift && !rb_escaped && !drag_escaped) {

// this was a shift-click, select what was clicked upon

sc->button_press_shift = false;

if (sc->button_press_ctrl) {

// go into groups, honoring Alt

item = sp_event_context_find_item (desktop,

NR::Point(event->button.x, event->button.y), event->button.state & GDK_MOD1_MASK, TRUE);

sc->button_press_ctrl = FALSE;

} else {

// don't go into groups, honoring Alt

item = sp_event_context_find_item (desktop,

NR::Point(event->button.x, event->button.y), event->button.state & GDK_MOD1_MASK, FALSE);

}

if (item) {

selection->toggle(item);

item = NULL;

}

} else if (sc->button_press_ctrl && !rb_escaped && !drag_escaped) { // ctrl-click

sc->button_press_ctrl = FALSE;

item = sp_event_context_find_item (desktop,

NR::Point(event->button.x, event->button.y), event->button.state & GDK_MOD1_MASK, TRUE);

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 (sc->grabbed) {

sp_canvas_item_ungrab(sc->grabbed, event->button.time);

sc->grabbed = NULL;

}

}

sc->button_press_shift = false;

sc->button_press_ctrl = false;

sc->button_press_alt = false;

break;

case GDK_KEY_PRESS: // keybindings for select context

if (!key_is_a_modifier (get_group0_keyval (&event->key))) {

event_context->defaultMessageContext()->clear();

} else {

sp_event_show_modifier_tip (event_context->defaultMessageContext(), event,

_("<b>Ctrl</b>: select in groups, move hor/vert"),

_("<b>Shift</b>: toggle select, force rubberband, disable snapping"),

_("<b>Alt</b>: select under, move selected"));

break;

}

switch (get_group0_keyval (&event->key)) {

case GDK_Left: // move selection left

case GDK_KP_Left:

case GDK_KP_4:

if (!MOD__CTRL) { // not ctrl

if (MOD__ALT) { // alt

if (MOD__SHIFT) sp_selection_move_screen(-10, 0); // shift

else sp_selection_move_screen(-1, 0); // no shift

}

else { // no alt

if (MOD__SHIFT) sp_selection_move(-10*nudge, 0); // shift

else sp_selection_move(-nudge, 0); // no shift

}

ret = TRUE;

}

break;

case GDK_Up: // move selection up

case GDK_KP_Up:

case GDK_KP_8:

if (!MOD__CTRL) { // not ctrl

if (MOD__ALT) { // alt

if (MOD__SHIFT) sp_selection_move_screen(0, 10); // shift

else sp_selection_move_screen(0, 1); // no shift

}

else { // no alt

if (MOD__SHIFT) sp_selection_move(0, 10*nudge); // shift

else sp_selection_move(0, nudge); // no shift

}

ret = TRUE;

}

break;

case GDK_Right: // move selection right

case GDK_KP_Right:

case GDK_KP_6:

if (!MOD__CTRL) { // not ctrl

if (MOD__ALT) { // alt

if (MOD__SHIFT) sp_selection_move_screen(10, 0); // shift

else sp_selection_move_screen(1, 0); // no shift

}

else { // no alt

if (MOD__SHIFT) sp_selection_move(10*nudge, 0); // shift

else sp_selection_move(nudge, 0); // no shift

}

ret = TRUE;

}

break;

case GDK_Down: // move selection down

case GDK_KP_Down:

case GDK_KP_2:

if (!MOD__CTRL) { // not ctrl

if (MOD__ALT) { // alt

if (MOD__SHIFT) sp_selection_move_screen(0, -10); // shift

else sp_selection_move_screen(0, -1); // no shift

}

else { // no alt

if (MOD__SHIFT) sp_selection_move(0, -10*nudge); // shift

else sp_selection_move(0, -nudge); // no shift

}

ret = TRUE;

}

break;

case GDK_Escape:

if (!sp_select_context_abort(event_context))

selection->clear();

ret = TRUE;

break;

case GDK_a:

case GDK_A:

if (MOD__CTRL_ONLY) {

sp_edit_select_all();

ret = TRUE;

}

break;

case GDK_Tab: // Tab - cycle selection forward

if (!(MOD__CTRL_ONLY || (MOD__CTRL && MOD__SHIFT))) {

sp_selection_item_next();

ret = TRUE;

}

break;

case GDK_ISO_Left_Tab: // Shift Tab - cycle selection backward

if (!(MOD__CTRL_ONLY || (MOD__CTRL && MOD__SHIFT))) {

sp_selection_item_prev();

ret = TRUE;

}

break;

case GDK_space:

/* stamping mode: show outline mode moving */

/* FIXME: Is next condition ok? (lauris) */

if (sc->dragging && sc->grabbed) {

seltrans->stamp();

ret = TRUE;

}

break;

case GDK_x:

case GDK_X:

if (MOD__ALT_ONLY) {

desktop->setToolboxFocusTo ("altx");

ret = TRUE;

}

break;

case GDK_bracketleft:

if (MOD__ALT) {

sp_selection_rotate_screen(selection, 1);

} else if (MOD__CTRL) {

sp_selection_rotate(selection, 90);

} else if (snaps) {

sp_selection_rotate(selection, 180/snaps);

}

ret = TRUE;

break;

case GDK_bracketright:

if (MOD__ALT) {

sp_selection_rotate_screen(selection, -1);

} else if (MOD__CTRL) {

sp_selection_rotate(selection, -90);

} else if (snaps) {

sp_selection_rotate(selection, -180/snaps);

}

ret = TRUE;

break;

case GDK_less:

case GDK_comma:

if (MOD__ALT) {

sp_selection_scale_screen(selection, -2);

} else if (MOD__CTRL) {

sp_selection_scale_times(selection, 0.5);

} else {

sp_selection_scale(selection, -offset);

}

ret = TRUE;

break;

case GDK_greater:

case GDK_period:

if (MOD__ALT) {

sp_selection_scale_screen(selection, 2);

} else if (MOD__CTRL) {

sp_selection_scale_times(selection, 2);

} else {

sp_selection_scale(selection, offset);

}

ret = TRUE;

break;

case GDK_Return:

if (MOD__CTRL_ONLY) {

if (selection->singleItem()) {

SPItem *clicked_item = selection->singleItem();

if (SP_IS_GROUP (clicked_item)) { // enter group

desktop->setCurrentLayer(reinterpret_cast<SPObject *>(clicked_item));

sp_desktop_selection(desktop)->clear();

} else {

SP_EVENT_CONTEXT(sc)->desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Selected object is not a group. Cannot enter."));

}

}

ret = TRUE;

}

break;

case GDK_BackSpace:

if (MOD__CTRL_ONLY) {

sp_select_context_up_one_layer(desktop);

ret = TRUE;

}

break;

default:

break;

}

break;

case GDK_KEY_RELEASE:

if (key_is_a_modifier (get_group0_keyval (&event->key)))

event_context->defaultMessageContext()->clear();

break;

default:

break;

}

if (!ret) {

if (((SPEventContextClass *) parent_class)->root_handler)

ret = ((SPEventContextClass *) parent_class)->root_handler(event_context, event);

}

return ret;

}