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#define __SP_DESKTOP_EVENTS_C__
/*
* Event handlers for SPDesktop
*
* Author:
* Lauris Kaplinski <lauris@kaplinski.com>
*
* Copyright (C) 1999-2002 Lauris Kaplinski
*
* Released under GNU GPL, read the file 'COPYING' for more information
*/
#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"
/* Root item handler */
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;
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);
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);
double const guide_pos_dt = event_dt[ horiz
? NR::Y
: NR::X ];
guide = sp_guideline_new(desktop->guides, guide_pos_dt, !horiz);
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, component_vectors[horiz ? NR::Y : NR::X]).getPoint();
double const guide_pos_dt = event_dt[ horiz
? NR::Y
: NR::X ];
sp_guideline_set_position(SP_GUIDELINE(guide), guide_pos_dt);
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 const event_dt(desktop->w2d(event_w));
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");
repr->setAttribute("orientation", (horiz) ? "horizontal" : "vertical");
double const guide_pos_dt = event_dt[ horiz
? NR::Y
: NR::X ];
sp_repr_set_svg_double(repr, "position", guide_pos_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(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);
}
/* Guides */
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).getPoint();
sp_guide_moveto(*guide, sp_guide_position_from_pt(guide, motion_dt), 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));
//If we don't snap here again, it will end up at the current mouse position
//whereas it might have been at a snapped position a millisecond before.
//See GDK_MOTION_NOTIFY above. Why's that????
SnapManager const &m = desktop->namedview->snap_manager;
event_dt = m.guideSnap(event_dt, guide->normal).getPoint();
if (sp_canvas_world_pt_inside_window(item->canvas, event_w)) {
sp_guide_moveto(*guide, sp_guide_position_from_pt(guide, event_dt), 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->position, 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);
GString *position_string = SP_PX_TO_METRIC_STRING(guide->position, desktop->namedview->getDefaultMetric());
char *guide_description = sp_guide_description(guide);
desktop->guidesMessageContext()->setF(Inkscape::NORMAL_MESSAGE, _("%s at %s"), guide_description, position_string->str);
g_free(guide_description);
g_string_free(position_string, TRUE);
break;
}
case GDK_LEAVE_NOTIFY:
sp_guideline_set_color(SP_GUIDELINE(item), guide->color);
desktop->guidesMessageContext()->clear();
break;
default:
break;
}
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:encoding=utf-8:textwidth=99 :
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