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#ifndef __SP_EVENT_CONTEXT_H__
#define __SP_EVENT_CONTEXT_H__
/** \file
* SPEventContext: base class for event processors
*
* This is per desktop object, which (its derivatives) implements
* different actions bound to mouse events.
*
* Authors:
* Lauris Kaplinski <lauris@kaplinski.com>
* Frank Felfe <innerspace@iname.com>
*
* Copyright (C) 1999-2002 authors
* Copyright (C) 2001-2002 Ximian, Inc.
*
* Released under GNU GPL, read the file 'COPYING' for more information
*/
#include <glib-object.h>
#include <gdk/gdk.h>
#include "knot.h"
#include "2geom/forward.h"
#include "preferences.h"
struct GrDrag;
struct SPDesktop;
struct SPItem;
class ShapeEditor;
struct SPEventContext;
namespace Inkscape {
class MessageContext;
class SelCue;
namespace XML {
class Node;
}
}
gboolean sp_event_context_snap_watchdog_callback(gpointer data);
void sp_event_context_discard_delayed_snap_event(SPEventContext *ec);
class DelayedSnapEvent
{
public:
enum DelayedSnapEventOrigin {
UNDEFINED_HANDLER = 0,
EVENTCONTEXT_ROOT_HANDLER,
EVENTCONTEXT_ITEM_HANDLER,
KNOT_HANDLER,
CONTROL_POINT_HANDLER,
GUIDE_HANDLER,
GUIDE_HRULER,
GUIDE_VRULER
};
DelayedSnapEvent(SPEventContext *event_context, gpointer const dse_item, gpointer dse_item2, GdkEventMotion const *event, DelayedSnapEvent::DelayedSnapEventOrigin const origin)
: _timer_id(0), _event(NULL), _item(dse_item), _item2(dse_item2), _origin(origin), _event_context(event_context)
{
Inkscape::Preferences *prefs = Inkscape::Preferences::get();
double value = prefs->getDoubleLimited("/options/snapdelay/value", 0, 0, 1000);
_timer_id = g_timeout_add(value, &sp_event_context_snap_watchdog_callback, this);
_event = gdk_event_copy((GdkEvent*) event);
((GdkEventMotion *)_event)->time = GDK_CURRENT_TIME;
}
~DelayedSnapEvent() {
if (_timer_id > 0) g_source_remove(_timer_id); // Kill the watchdog
if (_event != NULL) gdk_event_free(_event); // Remove the copy of the original event
}
SPEventContext* getEventContext() {return _event_context;}
DelayedSnapEventOrigin getOrigin() {return _origin;}
GdkEvent* getEvent() {return _event;}
gpointer getItem() {return _item;}
gpointer getItem2() {return _item2;}
private:
guint _timer_id;
GdkEvent* _event;
gpointer _item;
gpointer _item2;
DelayedSnapEventOrigin _origin;
SPEventContext* _event_context;
};
void sp_event_context_snap_delay_handler(SPEventContext *ec, gpointer const dse_item, gpointer const dse_item2, GdkEventMotion *event, DelayedSnapEvent::DelayedSnapEventOrigin origin);
/**
* Base class for Event processors.
*/
struct SPEventContext : public GObject {
void enableSelectionCue (bool enable=true);
void enableGrDrag (bool enable=true);
/// Desktop eventcontext stack
SPEventContext *next;
unsigned key;
SPDesktop *desktop;
Inkscape::Preferences::Observer *pref_observer;
gchar const *const *cursor_shape;
gint hot_x, hot_y; ///< indicates the cursor's hot spot
GdkCursor *cursor;
gint xp, yp; ///< where drag started
gint tolerance;
bool within_tolerance; ///< are we still within tolerance of origin
SPItem *item_to_select; ///< the item where mouse_press occurred, to
///< be selected if this is a click not drag
Inkscape::MessageContext *defaultMessageContext() {
return _message_context;
}
Inkscape::MessageContext *_message_context;
Inkscape::SelCue *_selcue;
GrDrag *_grdrag;
GrDrag *get_drag () {return _grdrag;}
ShapeEditor* shape_editor;
bool space_panning;
DelayedSnapEvent *_delayed_snap_event;
bool _dse_callback_in_process;
char const * tool_url; ///< the (preferences) url for the tool (if a subclass corresponding to a tool is used)
};
/**
* The SPEvent vtable.
*/
struct SPEventContextClass : public GObjectClass {
void (* setup)(SPEventContext *ec);
void (* finish)(SPEventContext *ec);
void (* set)(SPEventContext *ec, Inkscape::Preferences::Entry *val);
void (* activate)(SPEventContext *ec);
void (* deactivate)(SPEventContext *ec);
gint (* root_handler)(SPEventContext *ec, GdkEvent *event);
gint (* item_handler)(SPEventContext *ec, SPItem *item, GdkEvent *event);
};
#define SP_EVENT_CONTEXT_DESKTOP(e) (SP_EVENT_CONTEXT(e)->desktop)
#define SP_EVENT_CONTEXT_DOCUMENT(e) ((SP_EVENT_CONTEXT_DESKTOP(e))->doc())
#define SP_EVENT_CONTEXT_STATIC 0
SPEventContext *sp_event_context_new(GType type, SPDesktop *desktop, gchar const *pref_path, unsigned key);
void sp_event_context_finish(SPEventContext *ec);
void sp_event_context_read(SPEventContext *ec, gchar const *key);
void sp_event_context_activate(SPEventContext *ec);
void sp_event_context_deactivate(SPEventContext *ec);
gint sp_event_context_root_handler(SPEventContext *ec, GdkEvent *event);
gint sp_event_context_virtual_root_handler(SPEventContext *ec, GdkEvent *event);
gint sp_event_context_item_handler(SPEventContext *ec, SPItem *item, GdkEvent *event);
gint sp_event_context_virtual_item_handler(SPEventContext *ec, SPItem *item, GdkEvent *event);
void sp_event_root_menu_popup(SPDesktop *desktop, SPItem *item, GdkEvent *event);
gint gobble_key_events(guint keyval, gint mask);
gint gobble_motion_events(gint mask);
void sp_event_context_update_cursor(SPEventContext *ec);
void sp_event_show_modifier_tip(Inkscape::MessageContext *message_context, GdkEvent *event,
gchar const *ctrl_tip, gchar const *shift_tip, gchar const *alt_tip);
guint get_group0_keyval(GdkEventKey *event);
SPItem *sp_event_context_find_item (SPDesktop *desktop, Geom::Point const &p, bool select_under, bool into_groups);
SPItem *sp_event_context_over_item (SPDesktop *desktop, SPItem *item, Geom::Point const &p);
ShapeEditor *sp_event_context_get_shape_editor (SPEventContext *ec);
bool sp_event_context_knot_mouseover(SPEventContext *ec);
void ec_shape_event_attr_changed(Inkscape::XML::Node *shape_repr,
gchar const *name, gchar const *old_value, gchar const *new_value,
bool const is_interactive, gpointer const data);
void event_context_print_event_info(GdkEvent *event, bool print_return = true);
#endif
/*
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:fileencoding=utf-8:textwidth=99 :
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