#ifdef HAVE_CONFIG_H

# include "config.h"

#endif

#include <cstring>

#include <string>

#include <gdk/gdkkeysyms.h>

#include "macros.h"

#include "display/sp-canvas.h"

#include "sp-star.h"

#include "document.h"

#include "document-undo.h"

#include "sp-namedview.h"

#include "selection.h"

#include "desktop-handles.h"

#include "snap.h"

#include "desktop.h"

#include "desktop-style.h"

#include "message-context.h"

#include "pixmaps/cursor-star.xpm"

#include "sp-metrics.h"

#include <glibmm/i18n.h>

#include "preferences.h"

#include "xml/repr.h"

#include "xml/node-event-vector.h"

#include "context-fns.h"

#include "shape-editor.h"

#include "verbs.h"

#include "display/sp-canvas-item.h"

#include "star-context.h"

using Inkscape::DocumentUndo;

#include "tool-factory.h"

namespace {

SPEventContext* createStarContext() {

return new SPStarContext();

}

bool starContextRegistered = ToolFactory::instance().registerObject("/tools/shapes/star", createStarContext);

}

const std::string& SPStarContext::getPrefsPath() {

return SPStarContext::prefsPath;

}

const std::string SPStarContext::prefsPath = "/tools/shapes/star";

SPStarContext::SPStarContext() : SPEventContext() {

SPStarContext* star_context = this;

star_context->randomized = 0;

star_context->_message_context = 0;

star_context->rounded = 0;

SPEventContext *event_context = SP_EVENT_CONTEXT (star_context);

event_context->cursor_shape = cursor_star_xpm;

event_context->hot_x = 4;

event_context->hot_y = 4;

event_context->xp = 0;

event_context->yp = 0;

event_context->tolerance = 0;

event_context->within_tolerance = false;

event_context->item_to_select = NULL;

event_context->tool_url = "/tools/shapes/star";

star_context->star = NULL;

star_context->magnitude = 5;

star_context->proportion = 0.5;

star_context->isflatsided = false;

}

void SPStarContext::finish() {

SPDesktop *desktop = this->desktop;

sp_canvas_item_ungrab(SP_CANVAS_ITEM(desktop->acetate), GDK_CURRENT_TIME);

this->finishItem();

this->sel_changed_connection.disconnect();

SPEventContext::finish();

}

SPStarContext::~SPStarContext() {

this->enableGrDrag(false);

this->sel_changed_connection.disconnect();

delete this->shape_editor;

this->shape_editor = NULL;

/* fixme: This is necessary because we do not grab */

if (this->star) {

this->finishItem();

}

if (this->_message_context) {

delete this->_message_context;

}

}

void SPStarContext::selection_changed(Inkscape::Selection* selection) {

g_assert (selection != NULL);

this->shape_editor->unset_item(SH_KNOTHOLDER);

this->shape_editor->set_item(selection->singleItem(), SH_KNOTHOLDER);

}

void SPStarContext::setup() {

SPEventContext::setup();

sp_event_context_read(this, "magnitude");

sp_event_context_read(this, "proportion");

sp_event_context_read(this, "isflatsided");

sp_event_context_read(this, "rounded");

sp_event_context_read(this, "randomized");

this->shape_editor = new ShapeEditor(this->desktop);

SPItem *item = sp_desktop_selection(this->desktop)->singleItem();

if (item) {

this->shape_editor->set_item(item, SH_KNOTHOLDER);

}

Inkscape::Selection *selection = sp_desktop_selection(this->desktop);

this->sel_changed_connection.disconnect();

this->sel_changed_connection = selection->connectChanged(sigc::mem_fun(this, &SPStarContext::selection_changed));

Inkscape::Preferences *prefs = Inkscape::Preferences::get();

if (prefs->getBool("/tools/shapes/selcue")) {

this->enableSelectionCue();

}

if (prefs->getBool("/tools/shapes/gradientdrag")) {

this->enableGrDrag();

}

this->_message_context = new Inkscape::MessageContext(this->desktop->messageStack());

}

void SPStarContext::set(Inkscape::Preferences::Entry* val) {

Glib::ustring path = val->getEntryName();

if (path == "magnitude") {

this->magnitude = CLAMP(val->getInt(5), 3, 1024);

} else if (path == "proportion") {

this->proportion = CLAMP(val->getDouble(0.5), 0.01, 2.0);

} else if (path == "isflatsided") {

this->isflatsided = val->getBool();

} else if (path == "rounded") {

this->rounded = val->getDouble();

} else if (path == "randomized") {

this->randomized = val->getDouble();

}

}

gint SPStarContext::root_handler(GdkEvent* event) {

static bool dragging;

SPDesktop *desktop = this->desktop;

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

Inkscape::Preferences *prefs = Inkscape::Preferences::get();

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 && !this->space_panning) {

dragging = true;

this->center = Inkscape::setup_for_drag_start(desktop, this, event);

/* Snap center */

SnapManager &m = desktop->namedview->snap_manager;

m.setup(desktop, true);

m.freeSnapReturnByRef(this->center, Inkscape::SNAPSOURCE_NODE_HANDLE);

m.unSetup();

sp_canvas_item_grab(SP_CANVAS_ITEM(desktop->acetate),

GDK_KEY_PRESS_MASK | GDK_BUTTON_RELEASE_MASK |

GDK_POINTER_MOTION_MASK |

GDK_POINTER_MOTION_HINT_MASK |

GDK_BUTTON_PRESS_MASK,

NULL, event->button.time);

ret = TRUE;

}

break;

case GDK_MOTION_NOTIFY:

if (dragging && (event->motion.state & GDK_BUTTON1_MASK) && !this->space_panning) {

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));

this->drag(motion_dt, event->motion.state);

gobble_motion_events(GDK_BUTTON1_MASK);

ret = TRUE;

} else if (!sp_event_context_knot_mouseover(this)) {

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 && !this->space_panning) {

dragging = false;

sp_event_context_discard_delayed_snap_event(this);

if (!this->within_tolerance) {

// we've been dragging, finish the star

this->finishItem();

} else if (this->item_to_select) {

// no dragging, select clicked item 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 = NULL;

ret = TRUE;

sp_canvas_item_ungrab(SP_CANVAS_ITEM (desktop->acetate), event->button.time);

}

break;

case GDK_KEY_PRESS:

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

case GDK_KEY_Alt_R:

case GDK_KEY_Control_L:

case GDK_KEY_Control_R:

case GDK_KEY_Shift_L:

case GDK_KEY_Shift_R:

case GDK_KEY_Meta_L: // Meta is when you press Shift+Alt (at least on my machine)

case GDK_KEY_Meta_R:

sp_event_show_modifier_tip(this->defaultMessageContext(), event,

_("<b>Ctrl</b>: snap angle; keep rays radial"),

NULL,

NULL);

break;

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)

ret = TRUE;

break;

case GDK_KEY_x:

case GDK_KEY_X:

if (MOD__ALT_ONLY) {

desktop->setToolboxFocusTo ("altx-star");

ret = TRUE;

}

break;

case GDK_KEY_Escape:

if (dragging) {

dragging = false;

sp_event_context_discard_delayed_snap_event(this);

// if drawing, cancel, otherwise pass it up for deselecting

this->cancel();

ret = TRUE;

}

break;

case GDK_KEY_space:

if (dragging) {

sp_canvas_item_ungrab(SP_CANVAS_ITEM(desktop->acetate), event->button.time);

dragging = false;

sp_event_context_discard_delayed_snap_event(this);

if (!this->within_tolerance) {

// we've been dragging, finish the star

this->finishItem();

}

// 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);

break;

default:

break;

}

break;

case GDK_KEY_RELEASE:

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

case GDK_KEY_Alt_L:

case GDK_KEY_Alt_R:

case GDK_KEY_Control_L:

case GDK_KEY_Control_R:

case GDK_KEY_Shift_L:

case GDK_KEY_Shift_R:

case GDK_KEY_Meta_L: // Meta is when you press Shift+Alt

case GDK_KEY_Meta_R:

this->defaultMessageContext()->clear();

break;

default:

break;

}

break;

default:

break;

}

if (!ret) {

ret = SPEventContext::root_handler(event);

}

return ret;

}

void SPStarContext::drag(Geom::Point p, guint state)

{

SPDesktop *desktop = this->desktop;

Inkscape::Preferences *prefs = Inkscape::Preferences::get();

int const snaps = prefs->getInt("/options/rotationsnapsperpi/value", 12);

if (!this->star) {

if (Inkscape::have_viable_layer(desktop, this->_message_context) == false) {

return;

}

// Create object

Inkscape::XML::Document *xml_doc = this->desktop->doc()->getReprDoc();

Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");

repr->setAttribute("sodipodi:type", "star");

// Set style

sp_desktop_apply_style_tool(desktop, repr, "/tools/shapes/star", false);

this->star = SP_STAR(desktop->currentLayer()->appendChildRepr(repr));

Inkscape::GC::release(repr);

this->star->transform = SP_ITEM(desktop->currentLayer())->i2doc_affine().inverse();

this->star->updateRepr();

desktop->canvas->forceFullRedrawAfterInterruptions(5);

}

/* Snap corner point with no constraints */

SnapManager &m = desktop->namedview->snap_manager;

m.setup(desktop, true, this->star);

Geom::Point pt2g = p;

m.freeSnapReturnByRef(pt2g, Inkscape::SNAPSOURCE_NODE_HANDLE);

m.unSetup();

Geom::Point const p0 = desktop->dt2doc(this->center);

Geom::Point const p1 = desktop->dt2doc(pt2g);

double const sides = (gdouble) this->magnitude;

Geom::Point const d = p1 - p0;

Geom::Coord const r1 = Geom::L2(d);

double arg1 = atan2(d);

if (state & GDK_CONTROL_MASK) {

/* Snap angle */

arg1 = sp_round(arg1, M_PI / snaps);

}

sp_star_position_set(this->star, this->magnitude, p0, r1, r1 * this->proportion,

arg1, arg1 + M_PI / sides, this->isflatsided, this->rounded, this->randomized);

/* status text */

GString *rads = SP_PX_TO_METRIC_STRING(r1, desktop->namedview->getDefaultMetric());

this->_message_context->setF(Inkscape::IMMEDIATE_MESSAGE,

( this->isflatsided?

_("<b>Polygon</b>: radius %s, angle %5g&#176;; with <b>Ctrl</b> to snap angle")

: _("<b>Star</b>: radius %s, angle %5g&#176;; with <b>Ctrl</b> to snap angle") ),

rads->str, sp_round((arg1) * 180 / M_PI, 0.0001));

g_string_free(rads, FALSE);

}

void SPStarContext::finishItem() {

this->_message_context->clear();

if (this->star != NULL) {

if (this->star->r[1] == 0) {

// Don't allow the creating of zero sized arc, for example

// when the start and and point snap to the snap grid point

this->cancel();

return;

}

// Set transform center, so that odd stars rotate correctly

// LP #462157

this->star->setCenter(this->center);

this->star->set_shape();

this->star->updateRepr(SP_OBJECT_WRITE_EXT);

desktop->canvas->endForcedFullRedraws();

sp_desktop_selection(desktop)->set(this->star);

DocumentUndo::done(sp_desktop_document(desktop), SP_VERB_CONTEXT_STAR,

_("Create star"));

this->star = NULL;

}

}

void SPStarContext::cancel() {

sp_desktop_selection(desktop)->clear();

sp_canvas_item_ungrab(SP_CANVAS_ITEM(desktop->acetate), 0);

if (this->star != NULL) {

this->star->deleteObject();

this->star = NULL;

}

this->within_tolerance = false;

this->xp = 0;

this->yp = 0;

this->item_to_select = NULL;

desktop->canvas->endForcedFullRedraws();

DocumentUndo::cancel(sp_desktop_document(desktop));

}