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Code Issues Projects Releases Wiki Activity

notable changes to try to improve most of enter/leave handling for canvas items

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This commit is contained in:
Paul Davis 2013-10-30 23:36:30 -04:00
parent 006ba7cd36
commit 7bbd28aa08
9 changed files with 310 additions and 111 deletions
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19
libs/canvas/canvas/canvas.h
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@ -24,11 +24,14 @@
#ifndef __CANVAS_CANVAS_H__
#define __CANVAS_CANVAS_H__
#include <set>
#include <gdkmm/window.h>
#include <gtkmm/eventbox.h>
#include <gtkmm/alignment.h>
#include <cairomm/surface.h>
#include <cairomm/context.h>
#include "pbd/signals.h"
#include "canvas/root_group.h"
@ -63,6 +66,11 @@ public:
/** called to ask the canvas' host to `ungrab' any grabbed item */
virtual void ungrab () = 0;
/** called to ask the canvas' host to keyboard focus on an item */
virtual void focus (Item *) = 0;
/** called to ask the canvas' host to drop keyboard focus on an item */
virtual void unfocus (Item*) = 0;
void render (Rect const &, Cairo::RefPtr<Cairo::Context> const &) const;
/** @return root group */
@ -126,6 +134,8 @@ public:
void request_size (Duple);
void grab (Item *);
void ungrab ();
void focus (Item *);
void unfocus (Item*);
Cairo::RefPtr<Cairo::Context> context ();
@ -136,6 +146,8 @@ protected:
bool on_button_press_event (GdkEventButton *);
bool on_button_release_event (GdkEventButton* event);
bool on_motion_notify_event (GdkEventMotion *);
bool on_enter_notify_event (GdkEventCrossing*);
bool on_leave_notify_event (GdkEventCrossing*);
bool button_handler (GdkEventButton *);
bool motion_notify_handler (GdkEventMotion *);
@ -148,11 +160,12 @@ private:
void item_going_away (Item *, boost::optional<Rect>);
bool send_leave_event (Item const *, double, double) const;
/** the item that the mouse is currently over, or 0 */
Item const * _current_item;
/** Items that the pointer is currently within */
std::set<Item const *> within_items;
/** the item that is currently grabbed, or 0 */
Item const * _grabbed_item;
/** the item that currently has key focus or 0 */
Item const * _focused_item;
};
/** A GTK::Alignment with a GtkCanvas inside it plus some Gtk::Adjustments for