+/*
+ Copyright (C) 2011-2013 Paul Davis
+ Author: Carl Hetherington <cth@carlh.net>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
#include "pbd/compose.h"
#include "pbd/stacktrace.h"
-#include "pbd/xml++.h"
#include "pbd/convert.h"
#include "ardour/utils.h"
Item::~Item ()
{
- if (_canvas) {
- _canvas->item_going_away (this, _bounding_box);
- }
-
if (_parent) {
_parent->remove (this);
}
+
+ if (_canvas) {
+ _canvas->item_going_away (this, _bounding_box);
+ }
}
-Rect
-Item::item_to_parent (Rect const & r) const
+ArdourCanvas::Rect
+Item::item_to_parent (ArdourCanvas::Rect const & r) const
{
return r.translate (_position);
}
+ArdourCanvas::Rect
+Item::item_to_canvas (ArdourCanvas::Rect const & r) const
+{
+ Item const * i = this;
+ Duple offset;
+
+ while (i) {
+ offset = offset.translate (i->position());
+ i = i->parent();
+ }
+
+ return r.translate (offset);
+}
+
+ArdourCanvas::Duple
+Item::item_to_canvas (ArdourCanvas::Duple const & d) const
+{
+ Item const * i = this;
+ Duple offset;
+
+ while (i) {
+ offset = offset.translate (i->position());
+ i = i->parent();
+ }
+
+ return d.translate (offset);
+}
+
+ArdourCanvas::Duple
+Item::canvas_to_item (ArdourCanvas::Duple const & d) const
+{
+ Item const * i = this;
+ Duple offset;
+
+ while (i) {
+ offset = offset.translate (-(i->position()));
+ i = i->parent();
+ }
+
+ return d.translate (offset);
+}
+
+ArdourCanvas::Rect
+Item::canvas_to_item (ArdourCanvas::Rect const & d) const
+{
+ Item const * i = this;
+ Duple offset;
+
+ while (i) {
+ offset = offset.translate (-(i->position()));
+ i = i->parent();
+ }
+
+ return d.translate (offset);
+}
+
+void
+Item::item_to_canvas (Coord& x, Coord& y) const
+{
+ Duple d = item_to_canvas (Duple (x, y));
+
+ x = d.x;
+ y = d.y;
+}
+
+void
+Item::canvas_to_item (Coord& x, Coord& y) const
+{
+ Duple d = canvas_to_item (Duple (x, y));
+
+ x = d.x;
+ y = d.y;
+}
+
+Duple
+Item::item_to_window (ArdourCanvas::Duple const & d) const
+{
+ return _canvas->canvas_to_window (item_to_canvas (d));
+}
+
+Duple
+Item::window_to_item (ArdourCanvas::Duple const & d) const
+{
+ return _canvas->window_to_canvas (canvas_to_item (d));
+}
+
+ArdourCanvas::Rect
+Item::item_to_window (ArdourCanvas::Rect const & r) const
+{
+ return _canvas->canvas_to_window (item_to_canvas (r));
+}
+
/** Set the position of this item in the parent's coordinates */
void
Item::set_position (Duple p)
{
- boost::optional<Rect> bbox = bounding_box ();
- boost::optional<Rect> pre_change_parent_bounding_box;
+ boost::optional<ArdourCanvas::Rect> bbox = bounding_box ();
+ boost::optional<ArdourCanvas::Rect> pre_change_parent_bounding_box;
+
if (bbox) {
+ /* see the comment in Canvas::item_moved() to understand
+ * why we use the parent's bounding box here.
+ */
pre_change_parent_bounding_box = item_to_parent (bbox.get());
}
return d.translate (- _position);
}
-Rect
-Item::parent_to_item (Rect const & d) const
+ArdourCanvas::Rect
+Item::parent_to_item (ArdourCanvas::Rect const & d) const
{
return d.translate (- _position);
}
void
Item::unparent ()
{
- _canvas = 0;
_parent = 0;
}
void
Item::reparent (Group* new_parent)
{
+ assert (_canvas == _parent->canvas());
+
if (_parent) {
_parent->remove (this);
}
_parent->add (this);
}
+bool
+Item::common_ancestor_within (uint32_t limit, const Item& other) const
+{
+ uint32_t d1 = depth();
+ uint32_t d2 = other.depth();
+ const Item* i1 = this;
+ const Item* i2 = &other;
+
+ /* move towards root until we are at the same level
+ for both items
+ */
+
+ while (d1 != d2) {
+ if (d1 > d2) {
+ i1 = i1->parent();
+ d1--;
+ limit--;
+ } else {
+ i2 = i2->parent();
+ d2--;
+ limit--;
+ }
+ if (limit == 0) {
+ return false;
+ }
+ }
+
+ /* now see if there is a common parent */
+
+ while (i1 != i2) {
+ if (i1) {
+ i1 = i1->parent();
+ }
+ if (i2) {
+ i2 = i2->parent ();
+ }
+
+ limit--;
+ if (limit == 0) {
+ return false;
+ }
+ }
+
+ return true;
+}
+
+const Item*
+Item::closest_ancestor_with (const Item& other) const
+{
+ uint32_t d1 = depth();
+ uint32_t d2 = other.depth();
+ const Item* i1 = this;
+ const Item* i2 = &other;
+
+ /* move towards root until we are at the same level
+ for both items
+ */
+
+ while (d1 != d2) {
+ if (d1 > d2) {
+ i1 = i1->parent();
+ d1--;
+ } else {
+ i2 = i2->parent();
+ d2--;
+ }
+ }
+
+ /* now see if there is a common parent */
+
+ while (i1 != i2) {
+ if (i1) {
+ i1 = i1->parent();
+ }
+ if (i2) {
+ i2 = i2->parent ();
+ }
+ }
+
+ return i1;
+}
+
+bool
+Item::is_descendant_of (const Item& candidate) const
+{
+ Item const * i = _parent;
+
+ while (i) {
+ if (i == &candidate) {
+ return true;
+ }
+ i = i->parent();
+ }
+
+ return false;
+}
+
void
Item::grab_focus ()
{
}
/** @return Bounding box in this item's coordinates */
-boost::optional<Rect>
+boost::optional<ArdourCanvas::Rect>
Item::bounding_box () const
{
if (_bounding_box_dirty) {
Coord
Item::height () const
{
- boost::optional<Rect> bb = bounding_box();
+ boost::optional<ArdourCanvas::Rect> bb = bounding_box();
if (bb) {
return bb->height ();
Coord
Item::width () const
{
- boost::optional<Rect> bb = bounding_box().get();
+ boost::optional<ArdourCanvas::Rect> bb = bounding_box().get();
if (bb) {
return bb->width ();
return 0;
}
-/* XXX may be called even if bbox is not changing ... bit grotty */
+void
+Item::redraw () const
+{
+ if (_visible && _bounding_box && _canvas) {
+ _canvas->request_redraw (item_to_canvas (_bounding_box.get()));
+ }
+}
+
void
Item::begin_change ()
{
}
void
-Item::move (Duple movement)
+Item::begin_visual_change ()
{
- set_position (position() + movement);
}
void
-Item::add_item_state (XMLNode* node) const
+Item::end_visual_change ()
{
- node->add_property ("x-position", string_compose ("%1", _position.x));
- node->add_property ("y-position", string_compose ("%1", _position.y));
- node->add_property ("visible", _visible ? "yes" : "no");
+ _canvas->item_visual_property_changed (this);
}
void
-Item::set_item_state (XMLNode const * node)
+Item::move (Duple movement)
{
- _position.x = atof (node->property("x-position")->value().c_str());
- _position.y = atof (node->property("y-position")->value().c_str());
- _visible = PBD::string_is_affirmative (node->property("visible")->value());
+ set_position (position() + movement);
}
void
return i->second;
}
-void
-Item::item_to_canvas (Coord& x, Coord& y) const
-{
- Duple d (x, y);
- Item const * i = this;
-
- while (i) {
- d = i->item_to_parent (d);
- i = i->_parent;
- }
-
- x = d.x;
- y = d.y;
-}
-
-void
-Item::canvas_to_item (Coord& x, Coord& y) const
-{
- Duple d (x, y);
- Item const * i = this;
-
- while (i) {
- d = i->parent_to_item (d);
- i = i->_parent;
- }
-
- x = d.x;
- y = d.y;
-}
-
-Rect
-Item::item_to_canvas (Rect const & area) const
-{
- Rect r = area;
- Item const * i = this;
-
- while (i) {
- r = i->item_to_parent (r);
- i = i->parent ();
- }
-
- return r;
-}
-
void
Item::set_ignore_events (bool ignore)
{
void
Item::dump (ostream& o) const
{
- boost::optional<Rect> bb = bounding_box();
+ boost::optional<ArdourCanvas::Rect> bb = bounding_box();
- o << _canvas->indent() << whatami() << ' ' << this;
+ o << _canvas->indent() << whatami() << ' ' << this << " Visible ? " << _visible;
+ o << " @ " << position();
#ifdef CANVAS_DEBUG
if (!name.empty()) {
if (bb) {
o << endl << _canvas->indent() << "\tbbox: " << bb.get();
+ o << endl << _canvas->indent() << "\tCANVAS bbox: " << item_to_canvas (bb.get());
} else {
o << " bbox unset";
}
return type.substr (type.find_last_of (':') + 1);
}
+uint32_t
+Item::depth () const
+{
+ Item* i = _parent;
+ int d = 0;
+ while (i) {
+ ++d;
+ i = i->parent();
+ }
+ return d;
+}
+
+bool
+Item::covers (Duple const & point) const
+{
+ Duple p = canvas_to_item (point);
+
+ if (_bounding_box_dirty) {
+ compute_bounding_box ();
+ }
+
+ boost::optional<Rect> r = bounding_box();
+
+ if (!r) {
+ return false;
+ }
+
+ return r.get().contains (p);
+}
+
ostream&
ArdourCanvas::operator<< (ostream& o, const Item& i)
{
i.dump (o);
return o;
}
+
projects / ardour.git / blobdiff