#ifdef HAVE_CONFIG_H

# include <config.h>

#endif

#include <map>

#include <string>

#include <2geom/line.h>

#include <glibmm/i18n.h>

#include "desktop.h"

#include "desktop-handles.h"

#include "dialogs/dialog-events.h"

#include "display/canvas-axonomgrid.h"

#include "display/canvas-grid.h"

#include "display/guideline.h"

#include "display/snap-indicator.h"

#include "document.h"

#include "event-context.h"

#include "helper/action.h"

#include "helper/unit-menu.h"

#include "helper/units.h"

#include "message-context.h"

#include "preferences.h"

#include "snap.h"

#include "sp-guide.h"

#include "sp-metrics.h"

#include "sp-namedview.h"

#include "tools-switch.h"

#include "ui/dialog/guides.h"

#include "widgets/desktop-widget.h"

#include "xml/repr.h"

static void snoop_extended(GdkEvent* event, SPDesktop *desktop);

static void init_extended();

int sp_desktop_root_handler(SPCanvasItem */*item*/, GdkEvent *event, SPDesktop *desktop)

{

static bool watch = false;

static bool first = true;

if ( first ) {

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

if ( prefs->getBool("/options/useextinput/value", true)

&& prefs->getBool("/options/switchonextinput/value") ) {

watch = true;

init_extended();

}

first = false;

}

if ( watch ) {

snoop_extended(event, desktop);

}

return sp_event_context_root_handler(desktop->event_context, event);

}

static gint sp_dt_ruler_event(GtkWidget *widget, GdkEvent *event, SPDesktopWidget *dtw, bool horiz)

{

static bool dragging = false;

static SPCanvasItem *guide = NULL;

static Geom::Point normal;

static bool snap_window_temporarily_open = false;

int wx, wy;

SPDesktop *desktop = dtw->desktop;

Inkscape::XML::Node *repr = SP_OBJECT_REPR(desktop->namedview);

gdk_window_get_pointer(GTK_WIDGET(dtw->canvas)->window, &wx, &wy, NULL);

Geom::Point const event_win(wx, wy);

gint width, height;

gdk_window_get_geometry(GTK_WIDGET(dtw->canvas)->window, NULL /*x*/, NULL /*y*/, &width, &height, NULL/*depth*/);

switch (event->type) {

case GDK_BUTTON_PRESS:

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

dragging = true;

// FIXME: The snap delay mechanism won't work here, because it has been implemented for the event context. Dragging

// guides off the ruler will send event to the ruler and not to the context, which bypasses sp_event_context_snap_delay_handler

// The snap manager will not notice the difference, so it'll check if the snap delay has been activated (This check

// is only needed for catching coding errors, i.e. to warn if the snap window has not been implemented properly

// in some context)

if (desktop->event_context->_snap_window_open == false) {

// A dt_ruler_event might be emitted when dragging a guide off the rulers while drawing a Bezier curve

// In such a situation, we're already in that specific context and the snap delay is already active. We should

// not set the snap delay to active again, because that will trigger a similar warning to the one above

sp_event_context_snap_window_open(desktop->event_context);

snap_window_temporarily_open = true;

}

Geom::Point const event_w(sp_canvas_window_to_world(dtw->canvas, event_win));

Geom::Point const event_dt(desktop->w2d(event_w));

// explicitly show guidelines; if I draw a guide, I want them on

sp_repr_set_boolean(repr, "showguides", TRUE);

sp_repr_set_boolean(repr, "inkscape:guide-bbox", TRUE);

// calculate the normal of the guidelines when dragged from the edges of rulers.

Geom::Point normal_bl_to_tr(-1.,1.); //bottomleft to topright

Geom::Point normal_tr_to_bl(1.,1.); //topright to bottomleft

normal_bl_to_tr.normalize();

normal_tr_to_bl.normalize();

Inkscape::CanvasGrid * grid = sp_namedview_get_first_enabled_grid(desktop->namedview);

if ( grid && grid->getGridType() == Inkscape::GRID_AXONOMETRIC ) {

Inkscape::CanvasAxonomGrid *axonomgrid = dynamic_cast<Inkscape::CanvasAxonomGrid *>(grid);

if (event->button.state & GDK_CONTROL_MASK) {

// guidelines normal to gridlines

normal_bl_to_tr = Geom::Point::polar(-axonomgrid->angle_rad[0], 1.0);

normal_tr_to_bl = Geom::Point::polar(axonomgrid->angle_rad[2], 1.0);

} else {

normal_bl_to_tr = rot90(Geom::Point::polar(axonomgrid->angle_rad[2], 1.0));

normal_tr_to_bl = rot90(Geom::Point::polar(-axonomgrid->angle_rad[0], 1.0));

}

}

if (horiz) {

if (wx < 50) {

normal = normal_bl_to_tr;

} else if (wx > width - 50) {

normal = normal_tr_to_bl;

} else {

normal = Geom::Point(0.,1.);

}

} else {

if (wy < 50) {

normal = normal_bl_to_tr;

} else if (wy > height - 50) {

normal = normal_tr_to_bl;

} else {

normal = Geom::Point(1.,0.);

}

}

guide = sp_guideline_new(desktop->guides, event_dt, normal);

sp_guideline_set_color(SP_GUIDELINE(guide), desktop->namedview->guidehicolor);

gdk_pointer_grab(widget->window, FALSE,

(GdkEventMask)(GDK_BUTTON_RELEASE_MASK | GDK_POINTER_MOTION_MASK ),

NULL, NULL,

event->button.time);

}

break;

case GDK_MOTION_NOTIFY:

if (dragging) {

Geom::Point const event_w(sp_canvas_window_to_world(dtw->canvas, event_win));

Geom::Point event_dt(desktop->w2d(event_w));

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

m.setup(desktop);

// We only have a temporary guide which is not stored in our document yet. Because the guide snapper only looks

// in the document for guides to snap to, we don't have to worry about a guide snapping to itself here

m.guideFreeSnap(event_dt, normal);

sp_guideline_set_position(SP_GUIDELINE(guide), from_2geom(event_dt));

desktop->set_coordinate_status(to_2geom(event_dt));

desktop->setPosition(to_2geom(event_dt));

}

break;

case GDK_BUTTON_RELEASE:

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

gdk_pointer_ungrab(event->button.time);

Geom::Point const event_w(sp_canvas_window_to_world(dtw->canvas, event_win));

Geom::Point event_dt(desktop->w2d(event_w));

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

m.setup(desktop);

// We only have a temporary guide which is not stored in our document yet. Because the guide snapper only looks

// in the document for guides to snap to, we don't have to worry about a guide snapping to itself here

m.guideFreeSnap(event_dt, normal);

dragging = false;

// See the comments in GDK_BUTTON_PRESS

if (snap_window_temporarily_open) {

sp_event_context_snap_window_closed(desktop->event_context);

snap_window_temporarily_open = false;

}

gtk_object_destroy(GTK_OBJECT(guide));

guide = NULL;

if ((horiz ? wy : wx) >= 0) {

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

Inkscape::XML::Node *repr = xml_doc->createElement("sodipodi:guide");

sp_repr_set_point(repr, "orientation", normal);

sp_repr_set_point(repr, "position", from_2geom(event_dt));

SP_OBJECT_REPR(desktop->namedview)->appendChild(repr);

Inkscape::GC::release(repr);

sp_document_done(sp_desktop_document(desktop), SP_VERB_NONE,

_("Create guide"));

}

desktop->set_coordinate_status(from_2geom(event_dt));

// A dt_ruler_event might be emitted when dragging a guide of the rulers while drawing a Bezier curve

// In such a situation, we're already in that specific context and the snap delay is already active. We should

// interfere with that context and we should therefore leave the snap delay status as it is. So although it might

// have been set to active above on GDK_BUTTON_PRESS, we should not set it back to inactive here. That must be

// done by the context

}

default:

break;

}

return FALSE;

}

int sp_dt_hruler_event(GtkWidget *widget, GdkEvent *event, SPDesktopWidget *dtw)

{

return sp_dt_ruler_event(widget, event, dtw, true);

}

int sp_dt_vruler_event(GtkWidget *widget, GdkEvent *event, SPDesktopWidget *dtw)

{

return sp_dt_ruler_event(widget, event, dtw, false);

}

enum SPGuideDragType {

SP_DRAG_TRANSLATE,

SP_DRAG_TRANSLATE_CONSTRAINED, // Is not being used currently!

SP_DRAG_ROTATE,

SP_DRAG_MOVE_ORIGIN,

SP_DRAG_NONE

};

static Geom::Point drag_origin;

static SPGuideDragType drag_type = SP_DRAG_NONE;

gint sp_dt_guide_event(SPCanvasItem *item, GdkEvent *event, gpointer data)

{

static bool moved = false;

gint ret = FALSE;

SPGuide *guide = SP_GUIDE(data);

SPDesktop *desktop = static_cast<SPDesktop*>(gtk_object_get_data(GTK_OBJECT(item->canvas), "SPDesktop"));

switch (event->type) {

case GDK_2BUTTON_PRESS:

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

drag_type = SP_DRAG_NONE;

sp_event_context_snap_window_closed(desktop->event_context);

sp_canvas_item_ungrab(item, event->button.time);

Inkscape::UI::Dialogs::GuidelinePropertiesDialog::showDialog(guide, desktop);

ret = TRUE;

}

break;

case GDK_BUTTON_PRESS:

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

if (event->button.state & GDK_CONTROL_MASK) {

SPDocument *doc = SP_OBJECT_DOCUMENT(guide);

sp_guide_remove(guide);

sp_document_done(doc, SP_VERB_NONE, _("Delete guide"));

ret = TRUE;

break;

}

sp_event_context_snap_window_open(desktop->event_context);

double tol = 40.0; // Measured in screenpixels

Geom::Point const event_w(event->button.x, event->button.y);

Geom::Point const event_dt(desktop->w2d(event_w));

// Due to the tolerance allowed when grabbing a guide, event_dt will generally

// be close to the guide but not just exactly on it. The drag origin calculated

// here must be exactly on the guide line though, otherwise

// small errors will occur once we snap, see

// https://bugs.launchpad.net/inkscape/+bug/333762

drag_origin = Geom::projection(event_dt, Geom::Line(guide->point_on_line, guide->angle()));

if (Geom::L2(guide->point_on_line - event_dt) < tol/desktop->current_zoom()) {

// the click was on the guide 'anchor'

drag_type = (event->button.state & GDK_SHIFT_MASK) ? SP_DRAG_MOVE_ORIGIN : SP_DRAG_TRANSLATE;

} else {

drag_type = (event->button.state & GDK_SHIFT_MASK) ? SP_DRAG_ROTATE : SP_DRAG_TRANSLATE;

sp_canvas_item_grab(item,

( GDK_BUTTON_RELEASE_MASK |

GDK_BUTTON_PRESS_MASK |

GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK ),

NULL,

event->button.time);

}

ret = TRUE;

}

break;

case GDK_MOTION_NOTIFY:

if (drag_type != SP_DRAG_NONE) {

Geom::Point const motion_w(event->motion.x,

event->motion.y);

Geom::Point motion_dt(desktop->w2d(motion_w));

// This is for snapping while dragging existing guidelines. New guidelines,

// which are dragged off the ruler, are being snapped in sp_dt_ruler_event

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

m.setup(desktop, true, NULL, NULL, guide);

if (drag_type == SP_DRAG_MOVE_ORIGIN) {

// If we snap in guideConstrainedSnap() below, then motion_dt will be forced to be on the guide

// If we don't snap however, then it the origin should still be constrained to the guide

// So let's do that explicitly first:

Geom::Line line(guide->point_on_line, guide->angle());

Geom::Coord t = line.nearestPoint(motion_dt);

motion_dt = line.pointAt(t);

m.guideConstrainedSnap(motion_dt, *guide);

} else {

m.guideFreeSnap(motion_dt, guide->normal_to_line);

}

switch (drag_type) {

case SP_DRAG_TRANSLATE:

{

sp_guide_moveto(*guide, guide->point_on_line + motion_dt - drag_origin, false);

break;

}

case SP_DRAG_TRANSLATE_CONSTRAINED: // Is not being used currently!

{

Geom::Point pt_constr = Geom::constrain_angle(guide->point_on_line, motion_dt);

sp_guide_moveto(*guide, pt_constr, false);

break;

}

case SP_DRAG_ROTATE:

{

double angle = angle_between(drag_origin - guide->point_on_line, motion_dt - guide->point_on_line);

sp_guide_set_normal(*guide, guide->normal_to_line * Geom::Rotate(angle), false);

break;

}

case SP_DRAG_MOVE_ORIGIN:

{

sp_guide_moveto(*guide, motion_dt, false);

break;

}

case SP_DRAG_NONE:

g_assert_not_reached();

break;

}

moved = true;

desktop->set_coordinate_status(from_2geom(motion_dt));

desktop->setPosition(from_2geom(motion_dt));

ret = TRUE;

}

break;

case GDK_BUTTON_RELEASE:

if (drag_type != SP_DRAG_NONE && event->button.button == 1) {

if (moved) {

Geom::Point const event_w(event->button.x,

event->button.y);

Geom::Point event_dt(desktop->w2d(event_w));

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

m.setup(desktop, true, NULL, NULL, guide);

if (drag_type == SP_DRAG_MOVE_ORIGIN) {

// If we snap in guideConstrainedSnap() below, then motion_dt will be forced to be on the guide

// If we don't snap however, then it the origin should still be constrained to the guide

// So let's do that explicitly first:

Geom::Line line(guide->point_on_line, guide->angle());

Geom::Coord t = line.nearestPoint(event_dt);

event_dt = line.pointAt(t);

m.guideConstrainedSnap(event_dt, *guide);

} else {

m.guideFreeSnap(event_dt, guide->normal_to_line);

}

if (sp_canvas_world_pt_inside_window(item->canvas, event_w)) {

switch (drag_type) {

case SP_DRAG_TRANSLATE:

{

sp_guide_moveto(*guide, guide->point_on_line + event_dt - drag_origin, true);

break;

}

case SP_DRAG_TRANSLATE_CONSTRAINED: // Is not being used currently!

{

Geom::Point pt_constr = Geom::constrain_angle(guide->point_on_line, event_dt);

sp_guide_moveto(*guide, pt_constr, true);

break;

}

case SP_DRAG_ROTATE:

{

double angle = angle_between(drag_origin - guide->point_on_line, event_dt - guide->point_on_line);

sp_guide_set_normal(*guide, guide->normal_to_line * Geom::Rotate(angle), true);

break;

}

case SP_DRAG_MOVE_ORIGIN:

{

sp_guide_moveto(*guide, event_dt, true);

break;

}

case SP_DRAG_NONE:

g_assert_not_reached();

break;

}

sp_document_done(sp_desktop_document(desktop), SP_VERB_NONE,

_("Move guide"));

} else {

/* Undo movement of any attached shapes. */

sp_guide_moveto(*guide, guide->point_on_line, false);

sp_guide_set_normal(*guide, guide->normal_to_line, false);

sp_guide_remove(guide);

sp_document_done(sp_desktop_document(desktop), SP_VERB_NONE,

_("Delete guide"));

}

moved = false;

desktop->set_coordinate_status(from_2geom(event_dt));

desktop->setPosition (from_2geom(event_dt));

}

drag_type = SP_DRAG_NONE;

sp_event_context_snap_window_closed(desktop->event_context);

sp_canvas_item_ungrab(item, event->button.time);

ret=TRUE;

}

case GDK_ENTER_NOTIFY:

{

sp_guideline_set_color(SP_GUIDELINE(item), guide->hicolor);

char *guide_description = sp_guide_description(guide);

desktop->guidesMessageContext()->setF(Inkscape::NORMAL_MESSAGE, _("<b>Guideline</b>: %s"), guide_description);

g_free(guide_description);

break;

}

case GDK_LEAVE_NOTIFY:

sp_guideline_set_color(SP_GUIDELINE(item), guide->color);

desktop->guidesMessageContext()->clear();

break;

default:

break;

}

return ret;

}

static std::map<std::string, int> toolToUse;

static std::string lastName;

static GdkInputSource lastType = GDK_SOURCE_MOUSE;

static void init_extended()

{

std::string avoidName = "pad";

GList* devices = gdk_devices_list();

if ( devices ) {

for ( GList* curr = devices; curr; curr = g_list_next(curr) ) {

GdkDevice* dev = reinterpret_cast<GdkDevice*>(curr->data);

if ( dev->name

&& (avoidName != dev->name)

&& (dev->source != GDK_SOURCE_MOUSE) ) {

// Set the initial tool for the device

switch ( dev->source ) {

case GDK_SOURCE_PEN:

toolToUse[dev->name] = TOOLS_CALLIGRAPHIC;

break;

case GDK_SOURCE_ERASER:

toolToUse[dev->name] = TOOLS_ERASER;

break;

case GDK_SOURCE_CURSOR:

toolToUse[dev->name] = TOOLS_SELECT;

break;

default:

; // do not add

}

}

}

}

}

void snoop_extended(GdkEvent* event, SPDesktop *desktop)

{

GdkInputSource source = GDK_SOURCE_MOUSE;

std::string name;

switch ( event->type ) {

case GDK_MOTION_NOTIFY:

{

GdkEventMotion* event2 = reinterpret_cast<GdkEventMotion*>(event);

if ( event2->device ) {

source = event2->device->source;

name = event2->device->name;

}

}

break;

case GDK_BUTTON_PRESS:

case GDK_2BUTTON_PRESS:

case GDK_3BUTTON_PRESS:

case GDK_BUTTON_RELEASE:

{

GdkEventButton* event2 = reinterpret_cast<GdkEventButton*>(event);

if ( event2->device ) {

source = event2->device->source;

name = event2->device->name;

}

}

break;

case GDK_SCROLL:

{

GdkEventScroll* event2 = reinterpret_cast<GdkEventScroll*>(event);

if ( event2->device ) {

source = event2->device->source;

name = event2->device->name;

}

}

break;

case GDK_PROXIMITY_IN:

case GDK_PROXIMITY_OUT:

{

GdkEventProximity* event2 = reinterpret_cast<GdkEventProximity*>(event);

if ( event2->device ) {

source = event2->device->source;

name = event2->device->name;

}

}

break;

default:

;

}

if (!name.empty()) {

if ( lastType != source || lastName != name ) {

// The device switched. See if it is one we 'count'

//g_message("Changed device %s -> %s", lastName.c_str(), name.c_str());

std::map<std::string, int>::iterator it = toolToUse.find(lastName);

if (it != toolToUse.end()) {

// Save the tool currently selected for next time the input

// device shows up.

it->second = tools_active(desktop);

}

it = toolToUse.find(name);

if (it != toolToUse.end() ) {

tools_switch(desktop, it->second);

}

lastName = name;

lastType = source;

}

}

}