#define __SP_DESKTOP_EVENTS_C__

#ifdef HAVE_CONFIG_H

# include <config.h>

#endif

#include "display/guideline.h"

#include "helper/unit-menu.h"

#include "helper/units.h"

#include "desktop.h"

#include "document.h"

#include "sp-guide.h"

#include "sp-namedview.h"

#include "desktop-handles.h"

#include "event-context.h"

#include "widgets/desktop-widget.h"

#include "sp-metrics.h"

#include <glibmm/i18n.h>

#include "dialogs/dialog-events.h"

#include "message-context.h"

#include "xml/repr.h"

#include "dialogs/guidelinedialog.h"

#include "snap.h"

#include "display/canvas-grid.h"

#include "display/canvas-axonomgrid.h"

#include <2geom/point.h>

int sp_desktop_root_handler(SPCanvasItem */*item*/, GdkEvent *event, SPDesktop *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;

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);

NR::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;

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

NR::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.to_2geom(), 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) {

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

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

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

event_dt = m.guideSnap(event_dt, normal).getPoint();

sp_guideline_set_position(SP_GUIDELINE(guide), event_dt.to_2geom());

desktop->set_coordinate_status(event_dt);

desktop->setPosition (event_dt);

}

break;

case GDK_BUTTON_RELEASE:

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

gdk_pointer_ungrab(event->button.time);

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

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

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

event_dt = m.guideSnap(event_dt, normal).getPoint();

dragging = 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", event_dt.to_2geom());

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(event_dt);

}

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);

}

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

{

static bool dragging = false;

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) {

dragging = false;

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) {

dragging = true;

sp_canvas_item_grab(item,

( GDK_BUTTON_RELEASE_MASK |

GDK_BUTTON_PRESS_MASK |

GDK_POINTER_MOTION_MASK ),

NULL,

event->button.time);

ret = TRUE;

}

break;

case GDK_MOTION_NOTIFY:

if (dragging) {

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

event->motion.y);

NR::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 const &m = desktop->namedview->snap_manager;

motion_dt = m.guideSnap(motion_dt, guide->normal_to_line).getPoint();

sp_guide_moveto(*guide, motion_dt.to_2geom(), false);

moved = true;

desktop->set_coordinate_status(motion_dt);

desktop->setPosition (motion_dt);

ret = TRUE;

}

break;

case GDK_BUTTON_RELEASE:

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

if (moved) {

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

event->button.y);

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

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

event_dt = m.guideSnap(event_dt, guide->normal_to_line).getPoint();

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

sp_guide_moveto(*guide, event_dt.to_2geom(), true);

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_remove(guide);

sp_document_done(sp_desktop_document(desktop), SP_VERB_NONE,

_("Delete guide"));

}

moved = false;

desktop->set_coordinate_status(event_dt);

desktop->setPosition (event_dt);

}

dragging = false;

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;

}