the dumb/Item version of ::size_allocate_children() doesn't do anything but give its full allocation to children, and if there was more than one child, this could not be done in a "dumb" way. Likewise, if the sole child is not layout sensitive, it doesn't care about size allocation
1299 lines
22 KiB
C++
1299 lines
22 KiB
C++
/*
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* Copyright (C) 2012 Carl Hetherington <carl@carlh.net>
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* Copyright (C) 2013-2017 Paul Davis <paul@linuxaudiosystems.com>
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* Copyright (C) 2014-2017 Robin Gareus <robin@gareus.org>
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* Copyright (C) 2015-2017 Tim Mayberry <mojofunk@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "pbd/compose.h"
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#include "pbd/demangle.h"
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#include "pbd/convert.h"
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#include "canvas/canvas.h"
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#include "canvas/constraint_packer.h"
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#include "canvas/debug.h"
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#include "canvas/item.h"
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#include "canvas/scroll_group.h"
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using namespace std;
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using namespace PBD;
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using namespace ArdourCanvas;
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int Item::default_items_per_cell = 64;
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Item::Item (Canvas* canvas)
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: Fill (*this)
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, Outline (*this)
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, _canvas (canvas)
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, _parent (0)
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, _scroll_parent (0)
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, _visible (true)
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, _bounding_box_dirty (true)
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, _pack_options (PackOptions (0))
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, _layout_sensitive (false)
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, _lut (0)
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, _resize_queued (false)
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, _requested_width (-1)
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, _requested_height (-1)
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, _ignore_events (false)
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{
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DEBUG_TRACE (DEBUG::CanvasItems, string_compose ("new canvas item %1\n", this));
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}
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Item::Item (Item* parent)
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: Fill (*this)
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, Outline (*this)
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, _canvas (parent->canvas())
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, _parent (parent)
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, _scroll_parent (0)
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, _visible (true)
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, _bounding_box_dirty (true)
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, _pack_options (PackOptions (0))
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, _layout_sensitive (false)
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, _lut (0)
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, _resize_queued (false)
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, _requested_width (-1)
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, _requested_height (-1)
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, _ignore_events (false)
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{
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DEBUG_TRACE (DEBUG::CanvasItems, string_compose ("new canvas item %1\n", this));
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if (parent) {
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_parent->add (this);
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}
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find_scroll_parent ();
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}
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Item::Item (Item* parent, Duple const& p)
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: Fill (*this)
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, Outline (*this)
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, _canvas (parent->canvas())
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, _parent (parent)
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, _scroll_parent (0)
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, _position (p)
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, _visible (true)
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, _bounding_box_dirty (true)
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, _pack_options (PackOptions (0))
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, _layout_sensitive (false)
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, _requested_width (-1.)
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, _requested_height(-1.)
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, _lut (0)
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, _resize_queued (false)
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, _ignore_events (false)
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{
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DEBUG_TRACE (DEBUG::CanvasItems, string_compose ("new canvas item %1\n", this));
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if (parent) {
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_parent->add (this);
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}
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find_scroll_parent ();
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}
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Item::~Item ()
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{
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if (_parent) {
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_parent->remove (this);
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}
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if (_canvas) {
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_canvas->item_going_away (this, _bounding_box);
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}
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clear_items (true);
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delete _lut;
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}
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bool
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Item::visible() const
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{
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Item const * i = this;
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while (i) {
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if (!i->self_visible()) {
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return false;
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}
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i = i->parent();
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}
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return true;
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}
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Duple
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Item::canvas_origin () const
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{
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return item_to_canvas (Duple (0,0));
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}
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Duple
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Item::window_origin () const
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{
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/* This is slightly subtle. Our _position is in the coordinate space of
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our parent. So to find out where that is in window coordinates, we
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have to ask our parent.
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*/
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if (_parent) {
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return _parent->item_to_window (_position);
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} else {
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return _position;
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}
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}
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ArdourCanvas::Rect
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Item::item_to_parent (ArdourCanvas::Rect const & r) const
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{
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return r.translate (_position);
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}
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Duple
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Item::scroll_offset () const
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{
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if (_scroll_parent) {
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return _scroll_parent->scroll_offset();
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}
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return Duple (0,0);
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}
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Duple
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Item::position_offset() const
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{
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Item const * i = this;
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Duple offset;
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while (i) {
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offset = offset.translate (i->position());
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i = i->parent();
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}
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return offset;
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}
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ArdourCanvas::Rect
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Item::item_to_canvas (ArdourCanvas::Rect const & r) const
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{
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return r.translate (position_offset());
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}
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ArdourCanvas::Duple
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Item::item_to_canvas (ArdourCanvas::Duple const & d) const
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{
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return d.translate (position_offset());
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}
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ArdourCanvas::Duple
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Item::canvas_to_item (ArdourCanvas::Duple const & r) const
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{
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return r.translate (-position_offset());
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}
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ArdourCanvas::Rect
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Item::canvas_to_item (ArdourCanvas::Rect const & r) const
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{
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return r.translate (-position_offset());
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}
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void
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Item::item_to_canvas (Coord& x, Coord& y) const
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{
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Duple d = item_to_canvas (Duple (x, y));
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x = d.x;
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y = d.y;
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}
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void
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Item::canvas_to_item (Coord& x, Coord& y) const
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{
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Duple d = canvas_to_item (Duple (x, y));
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x = d.x;
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y = d.y;
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}
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Duple
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Item::item_to_window (ArdourCanvas::Duple const & d, bool rounded) const
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{
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Duple ret = item_to_canvas (d).translate (-scroll_offset());
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if (rounded) {
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ret.x = round (ret.x);
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ret.y = round (ret.y);
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}
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return ret;
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}
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Duple
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Item::window_to_item (ArdourCanvas::Duple const & d) const
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{
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return canvas_to_item (d.translate (scroll_offset()));
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}
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ArdourCanvas::Rect
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Item::item_to_window (ArdourCanvas::Rect const & r, bool rounded) const
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{
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Rect ret = item_to_canvas (r).translate (-scroll_offset());
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if (rounded) {
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ret.x0 = round (ret.x0);
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ret.x1 = round (ret.x1);
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ret.y0 = round (ret.y0);
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ret.y1 = round (ret.y1);
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}
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return ret;
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}
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ArdourCanvas::Rect
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Item::window_to_item (ArdourCanvas::Rect const & r) const
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{
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return canvas_to_item (r.translate (scroll_offset()));
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}
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/** Set the position of this item in the parent's coordinates */
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void
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Item::set_position (Duple p)
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{
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if (p == _position) {
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return;
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}
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ArdourCanvas::Rect bbox = bounding_box ();
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ArdourCanvas::Rect pre_change_parent_bounding_box;
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if (bbox) {
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/* see the comment in Canvas::item_moved() to understand
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* why we use the parent's bounding box here.
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*/
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pre_change_parent_bounding_box = item_to_parent (bbox);
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}
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_position = p;
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/* only update canvas and parent if visible. Otherwise, this
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will be done when ::show() is called.
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*/
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if (visible()) {
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_canvas->item_moved (this, pre_change_parent_bounding_box);
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if (_parent) {
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_parent->child_changed (true);
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}
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}
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}
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void
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Item::layout()
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{
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for (list<Item*>::iterator i = _items.begin(); i != _items.end(); ++i) {
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if ((*i)->resize_queued()) {
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(*i)->layout ();
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}
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}
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_resize_queued = false;
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}
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void
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Item::set_x_position (Coord x)
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{
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set_position (Duple (x, _position.y));
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}
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void
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Item::set_y_position (Coord y)
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{
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set_position (Duple (_position.x, y));
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}
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void
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Item::raise_to_top ()
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{
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if (_parent) {
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_parent->raise_child_to_top (this);
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}
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}
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void
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Item::raise (int levels)
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{
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if (_parent) {
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_parent->raise_child (this, levels);
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}
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}
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void
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Item::lower_to_bottom ()
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{
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if (_parent) {
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_parent->lower_child_to_bottom (this);
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}
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}
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void
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Item::hide ()
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{
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if (_visible) {
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_visible = false;
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/* children are all hidden because we are hidden, no need
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to propagate change because our bounding box necessarily
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includes them all already. thus our being hidden results
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in (a) a redraw of the entire bounding box (b) no children
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will be drawn.
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BUT ... current item in canvas might be one of our children,
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which is now hidden. So propagate away.
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*/
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for (list<Item*>::iterator i = _items.begin(); i != _items.end(); ++i) {
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if ((*i)->self_visible()) {
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/* item was visible but is now hidden because
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we (its parent) are hidden
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*/
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(*i)->propagate_show_hide ();
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}
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}
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propagate_show_hide ();
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}
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}
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void
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Item::show ()
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{
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if (!_visible) {
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_visible = true;
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for (list<Item*>::iterator i = _items.begin(); i != _items.end(); ++i) {
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if ((*i)->self_visible()) {
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/* item used to be hidden by us (its parent),
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but is now visible
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*/
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(*i)->propagate_show_hide ();
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}
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}
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propagate_show_hide ();
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}
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}
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void
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Item::propagate_show_hide ()
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{
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/* bounding box may have changed while we were hidden */
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if (_parent) {
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_parent->child_changed (false);
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}
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_canvas->item_shown_or_hidden (this);
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}
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Duple
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Item::item_to_parent (Duple const & d) const
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{
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return d.translate (_position);
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}
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Duple
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Item::parent_to_item (Duple const & d) const
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{
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return d.translate (- _position);
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}
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ArdourCanvas::Rect
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Item::parent_to_item (ArdourCanvas::Rect const & d) const
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{
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return d.translate (- _position);
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}
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void
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Item::unparent ()
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{
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_parent = 0;
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_scroll_parent = 0;
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_layout_sensitive = false;
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}
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void
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Item::reparent (Item* new_parent, bool already_added)
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{
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if (new_parent == _parent) {
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return;
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}
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assert (_canvas == new_parent->canvas());
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if (_parent) {
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_parent->remove (this);
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}
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assert (new_parent);
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_parent = new_parent;
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_canvas = _parent->canvas ();
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find_scroll_parent ();
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set_layout_sensitive (_parent->layout_sensitive());
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if (!already_added) {
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_parent->add (this);
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}
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}
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void
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Item::find_scroll_parent ()
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{
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Item const * i = this;
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ScrollGroup const * last_scroll_group = 0;
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|
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/* Don't allow a scroll group to find itself as its own scroll parent
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*/
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i = i->parent ();
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while (i) {
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ScrollGroup const * sg = dynamic_cast<ScrollGroup const *> (i);
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if (sg) {
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last_scroll_group = sg;
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}
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i = i->parent();
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}
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_scroll_parent = const_cast<ScrollGroup*> (last_scroll_group);
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}
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|
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bool
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Item::common_ancestor_within (uint32_t limit, const Item& other) const
|
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{
|
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uint32_t d1 = depth();
|
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uint32_t d2 = other.depth();
|
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const Item* i1 = this;
|
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const Item* i2 = &other;
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|
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/* move towards root until we are at the same level
|
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for both items
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*/
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while (d1 != d2) {
|
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if (d1 > d2) {
|
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if (!i1) {
|
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return false;
|
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}
|
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i1 = i1->parent();
|
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d1--;
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limit--;
|
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} else {
|
|
if (!i2) {
|
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return false;
|
|
}
|
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i2 = i2->parent();
|
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d2--;
|
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limit--;
|
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}
|
|
if (limit == 0) {
|
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return false;
|
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}
|
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}
|
|
|
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/* now see if there is a common parent */
|
|
|
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while (i1 != i2) {
|
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if (i1) {
|
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i1 = i1->parent();
|
|
}
|
|
if (i2) {
|
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i2 = i2->parent ();
|
|
}
|
|
|
|
limit--;
|
|
if (limit == 0) {
|
|
return false;
|
|
}
|
|
}
|
|
|
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return true;
|
|
}
|
|
|
|
const Item*
|
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Item::closest_ancestor_with (const Item& other) const
|
|
{
|
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uint32_t d1 = depth();
|
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uint32_t d2 = other.depth();
|
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const Item* i1 = this;
|
|
const Item* i2 = &other;
|
|
|
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/* move towards root until we are at the same level
|
|
for both items
|
|
*/
|
|
|
|
while (d1 != d2) {
|
|
if (d1 > d2) {
|
|
if (!i1) {
|
|
return 0;
|
|
}
|
|
i1 = i1->parent();
|
|
d1--;
|
|
} else {
|
|
if (!i2) {
|
|
return 0;
|
|
}
|
|
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 ()
|
|
{
|
|
/* XXX */
|
|
}
|
|
|
|
void
|
|
Item::size_allocate (Rect const & r)
|
|
{
|
|
begin_change ();
|
|
_size_allocate (r);
|
|
_bounding_box_dirty = true;
|
|
end_change ();
|
|
}
|
|
|
|
void
|
|
Item::_size_allocate (Rect const & r)
|
|
{
|
|
if (_layout_sensitive) {
|
|
/* this definitely affects the item */
|
|
_position = Duple (r.x0, r.y0);
|
|
/* this may have no effect on the item */
|
|
_allocation = r;
|
|
}
|
|
|
|
size_allocate_children (r);
|
|
}
|
|
|
|
void
|
|
Item::size_allocate_children (Rect const & r)
|
|
{
|
|
/* this does nothing by default. Containers like Box or
|
|
* ConstraintPacker can override it to do "smart" layout based on this
|
|
* Item's allocation.
|
|
*/
|
|
|
|
if (_items.size() == 1 && _items.front()->layout_sensitive()) {
|
|
_items.front()->size_allocate (r);
|
|
}
|
|
}
|
|
|
|
void
|
|
Item::size_request (double& w, double& h) const
|
|
{
|
|
Rect r (bounding_box());
|
|
|
|
w = _requested_width < 0 ? r.width() : _requested_width;
|
|
h = _requested_width < 0 ? r.height() : _requested_height;
|
|
}
|
|
|
|
void
|
|
Item::set_size_request (double w, double h)
|
|
{
|
|
/* allow reset to zero or require that both are positive */
|
|
|
|
begin_change ();
|
|
_requested_width = w;
|
|
_requested_height = h;
|
|
_bounding_box_dirty = true;
|
|
end_change ();
|
|
}
|
|
|
|
/** @return Bounding box in this item's coordinates */
|
|
ArdourCanvas::Rect
|
|
Item::bounding_box () const
|
|
{
|
|
if (_bounding_box_dirty) {
|
|
compute_bounding_box ();
|
|
assert (!_bounding_box_dirty);
|
|
add_child_bounding_boxes ();
|
|
}
|
|
|
|
return _bounding_box;
|
|
}
|
|
|
|
Coord
|
|
Item::height () const
|
|
{
|
|
ArdourCanvas::Rect bb = bounding_box();
|
|
|
|
if (bb) {
|
|
return bb.height ();
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
Coord
|
|
Item::width () const
|
|
{
|
|
ArdourCanvas::Rect bb = bounding_box();
|
|
|
|
if (bb) {
|
|
return bb.width ();
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
Item::redraw () const
|
|
{
|
|
if (visible() && _bounding_box && _canvas) {
|
|
_canvas->request_redraw (item_to_window (_bounding_box, false));
|
|
}
|
|
|
|
}
|
|
|
|
void
|
|
Item::begin_change ()
|
|
{
|
|
_pre_change_bounding_box = bounding_box ();
|
|
}
|
|
|
|
void
|
|
Item::end_change ()
|
|
{
|
|
if (visible()) {
|
|
_canvas->item_changed (this, _pre_change_bounding_box);
|
|
|
|
if (_parent) {
|
|
_parent->child_changed (_pre_change_bounding_box != _bounding_box);
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
Item::begin_visual_change ()
|
|
{
|
|
}
|
|
|
|
void
|
|
Item::end_visual_change ()
|
|
{
|
|
if (visible()) {
|
|
_canvas->item_visual_property_changed (this);
|
|
}
|
|
}
|
|
|
|
void
|
|
Item::move (Duple movement)
|
|
{
|
|
set_position (position() + movement);
|
|
}
|
|
|
|
void
|
|
Item::grab ()
|
|
{
|
|
assert (_canvas);
|
|
_canvas->grab (this);
|
|
}
|
|
|
|
void
|
|
Item::ungrab ()
|
|
{
|
|
assert (_canvas);
|
|
_canvas->ungrab ();
|
|
}
|
|
|
|
void
|
|
Item::set_data (string const & key, void* data)
|
|
{
|
|
_data[key] = data;
|
|
}
|
|
|
|
void *
|
|
Item::get_data (string const & key) const
|
|
{
|
|
map<string, void*>::const_iterator i = _data.find (key);
|
|
if (i == _data.end ()) {
|
|
return 0;
|
|
}
|
|
|
|
return i->second;
|
|
}
|
|
|
|
void
|
|
Item::set_ignore_events (bool ignore)
|
|
{
|
|
_ignore_events = ignore;
|
|
}
|
|
|
|
std::string
|
|
Item::whatami () const
|
|
{
|
|
std::string type = demangle (typeid (*this).name());
|
|
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 = window_to_item (point);
|
|
|
|
if (_bounding_box_dirty) {
|
|
(void) bounding_box ();
|
|
}
|
|
|
|
Rect r = bounding_box();
|
|
|
|
/* bounding box uses item coordinates, with _position as the origin */
|
|
|
|
if (!r) {
|
|
return false;
|
|
}
|
|
|
|
return r.contains (p);
|
|
}
|
|
|
|
/* nesting/grouping API */
|
|
|
|
static bool debug_render = false;
|
|
#define CANVAS_DEBUG 1
|
|
|
|
void
|
|
Item::render_children (Rect const & area, Cairo::RefPtr<Cairo::Context> context) const
|
|
{
|
|
if (_items.empty()) {
|
|
return;
|
|
}
|
|
|
|
ensure_lut ();
|
|
std::vector<Item*> items = _lut->get (area);
|
|
|
|
#ifdef CANVAS_DEBUG
|
|
if (debug_render || DEBUG_ENABLED(PBD::DEBUG::CanvasRender)) {
|
|
cerr << string_compose ("%1%8 %2 @ %7 render %5 @ %6 %3 items out of %4\n",
|
|
_canvas->render_indent(), (name.empty() ? string ("[unnamed]") : name), items.size(), _items.size(), area, _position, 0 /* this */,
|
|
whatami());
|
|
}
|
|
#endif
|
|
|
|
++render_depth;
|
|
|
|
for (std::vector<Item*>::const_iterator i = items.begin(); i != items.end(); ++i) {
|
|
|
|
if (!(*i)->visible ()) {
|
|
#ifdef CANVAS_DEBUG
|
|
if (debug_render || DEBUG_ENABLED(PBD::DEBUG::CanvasRender)) {
|
|
cerr << _canvas->render_indent() << "Item " << (*i)->whoami() << " invisible - skipped\n";
|
|
}
|
|
#endif
|
|
continue;
|
|
}
|
|
|
|
Rect item_bbox = (*i)->bounding_box ();
|
|
|
|
if (!item_bbox) {
|
|
#ifdef CANVAS_DEBUG
|
|
if (debug_render || DEBUG_ENABLED(PBD::DEBUG::CanvasRender)) {
|
|
cerr << _canvas->render_indent() << "Item " << (*i)->whoami() << " empty - skipped\n";
|
|
}
|
|
#endif
|
|
continue;
|
|
}
|
|
|
|
Rect item = (*i)->item_to_window (item_bbox, false);
|
|
Rect d = item.intersection (area);
|
|
|
|
if (d) {
|
|
Rect draw = d;
|
|
if (draw.width() && draw.height()) {
|
|
#ifdef CANVAS_DEBUG
|
|
if (debug_render || DEBUG_ENABLED(PBD::DEBUG::CanvasRender)) {
|
|
if (dynamic_cast<Container*>(*i) == 0) {
|
|
cerr << _canvas->render_indent() << "render "
|
|
<< ' '
|
|
<< (*i)
|
|
<< ' '
|
|
<< (*i)->whoami()
|
|
<< " item "
|
|
<< item_bbox
|
|
<< " window = "
|
|
<< item
|
|
<< " intersect = "
|
|
<< draw
|
|
<< " @ "
|
|
<< _position
|
|
<< endl;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
(*i)->render (area, context);
|
|
++render_count;
|
|
}
|
|
|
|
} else {
|
|
|
|
#ifdef CANVAS_DEBUG
|
|
if (debug_render || DEBUG_ENABLED(PBD::DEBUG::CanvasRender)) {
|
|
cerr << string_compose ("%1skip render of %2, no intersection between %3 and %4\n", _canvas->render_indent(), (*i)->whoami(), item, area);
|
|
}
|
|
#endif
|
|
|
|
}
|
|
}
|
|
|
|
--render_depth;
|
|
}
|
|
#undef CANVAS_DEBUG
|
|
|
|
void
|
|
Item::prepare_for_render_children (Rect const & area) const
|
|
{
|
|
if (_items.empty()) {
|
|
return;
|
|
}
|
|
|
|
ensure_lut ();
|
|
std::vector<Item*> items = _lut->get (area);
|
|
|
|
for (std::vector<Item*>::const_iterator i = items.begin(); i != items.end(); ++i) {
|
|
|
|
if (!(*i)->visible ()) {
|
|
continue;
|
|
}
|
|
|
|
Rect item_bbox = (*i)->bounding_box ();
|
|
|
|
if (!item_bbox) {
|
|
continue;
|
|
}
|
|
|
|
Rect item = (*i)->item_to_window (item_bbox, false);
|
|
Rect d = item.intersection (area);
|
|
|
|
if (d) {
|
|
Rect draw = d;
|
|
if (draw.width() && draw.height()) {
|
|
(*i)->prepare_for_render (area);
|
|
}
|
|
|
|
} else {
|
|
// Item does not intersect with visible canvas area
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
Item::add_child_bounding_boxes (bool include_hidden) const
|
|
{
|
|
Rect self;
|
|
Rect bbox;
|
|
bool have_one = false;
|
|
|
|
if (_bounding_box) {
|
|
bbox = _bounding_box;
|
|
have_one = true;
|
|
}
|
|
|
|
for (list<Item*>::const_iterator i = _items.begin(); i != _items.end(); ++i) {
|
|
|
|
if (!(*i)->visible() && !include_hidden) {
|
|
continue;
|
|
}
|
|
|
|
Rect item_bbox = (*i)->bounding_box ();
|
|
|
|
if (!item_bbox) {
|
|
continue;
|
|
}
|
|
|
|
Rect child_bbox = (*i)->item_to_parent (item_bbox);
|
|
if (have_one) {
|
|
bbox = bbox.extend (child_bbox);
|
|
} else {
|
|
bbox = child_bbox;
|
|
have_one = true;
|
|
}
|
|
}
|
|
|
|
if (!have_one) {
|
|
_bounding_box = Rect ();
|
|
} else {
|
|
_bounding_box = bbox;
|
|
}
|
|
}
|
|
|
|
void
|
|
Item::queue_resize()
|
|
{
|
|
_resize_queued = true;
|
|
|
|
if (_parent) {
|
|
_parent->queue_resize ();
|
|
}
|
|
|
|
if (this == _canvas->root()) {
|
|
_canvas->queue_resize ();
|
|
}
|
|
}
|
|
|
|
void
|
|
Item::add (Item* i)
|
|
{
|
|
/* XXX should really notify canvas about this */
|
|
|
|
_items.push_back (i);
|
|
i->reparent (this, true);
|
|
invalidate_lut ();
|
|
_bounding_box_dirty = true;
|
|
}
|
|
|
|
void
|
|
Item::add_front (Item* i)
|
|
{
|
|
/* XXX should really notify canvas about this */
|
|
|
|
_items.push_front (i);
|
|
i->reparent (this, true);
|
|
invalidate_lut ();
|
|
_bounding_box_dirty = true;
|
|
}
|
|
|
|
void
|
|
Item::remove (Item* i)
|
|
{
|
|
|
|
if (i->parent() != this) {
|
|
return;
|
|
}
|
|
|
|
/* we cannot call bounding_box() here because that will iterate over
|
|
_items, one of which (the argument, i) may be in the middle of
|
|
deletion, making it impossible to call compute_bounding_box()
|
|
on it.
|
|
*/
|
|
|
|
if (_bounding_box) {
|
|
_pre_change_bounding_box = _bounding_box;
|
|
} else {
|
|
_pre_change_bounding_box = Rect();
|
|
}
|
|
|
|
i->unparent ();
|
|
i->set_layout_sensitive (false);
|
|
_items.remove (i);
|
|
invalidate_lut ();
|
|
_bounding_box_dirty = true;
|
|
|
|
end_change ();
|
|
}
|
|
|
|
void
|
|
Item::clear (bool with_delete)
|
|
{
|
|
begin_change ();
|
|
|
|
clear_items (with_delete);
|
|
|
|
invalidate_lut ();
|
|
_bounding_box_dirty = true;
|
|
|
|
end_change ();
|
|
}
|
|
|
|
void
|
|
Item::clear_items (bool with_delete)
|
|
{
|
|
for (list<Item*>::iterator i = _items.begin(); i != _items.end(); ) {
|
|
|
|
list<Item*>::iterator tmp = i;
|
|
Item *item = *i;
|
|
|
|
++tmp;
|
|
|
|
/* remove from list before doing anything else, because we
|
|
* don't want to find the item in _items during any activity
|
|
* driven by unparent-ing or deletion.
|
|
*/
|
|
|
|
_items.erase (i);
|
|
item->unparent ();
|
|
|
|
if (with_delete) {
|
|
delete item;
|
|
}
|
|
|
|
i = tmp;
|
|
}
|
|
}
|
|
|
|
void
|
|
Item::raise_child_to_top (Item* i)
|
|
{
|
|
if (!_items.empty()) {
|
|
if (_items.back() == i) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
_items.remove (i);
|
|
_items.push_back (i);
|
|
|
|
invalidate_lut ();
|
|
redraw ();
|
|
}
|
|
|
|
void
|
|
Item::raise_child (Item* i, int levels)
|
|
{
|
|
list<Item*>::iterator j = find (_items.begin(), _items.end(), i);
|
|
assert (j != _items.end ());
|
|
|
|
++j;
|
|
_items.remove (i);
|
|
|
|
while (levels > 0 && j != _items.end ()) {
|
|
++j;
|
|
--levels;
|
|
}
|
|
|
|
_items.insert (j, i);
|
|
invalidate_lut ();
|
|
redraw ();
|
|
}
|
|
|
|
void
|
|
Item::lower_child_to_bottom (Item* i)
|
|
{
|
|
if (!_items.empty()) {
|
|
if (_items.front() == i) {
|
|
return;
|
|
}
|
|
}
|
|
_items.remove (i);
|
|
_items.push_front (i);
|
|
invalidate_lut ();
|
|
redraw ();
|
|
}
|
|
|
|
void
|
|
Item::ensure_lut () const
|
|
{
|
|
if (!_lut) {
|
|
_lut = new DumbLookupTable (*this);
|
|
}
|
|
}
|
|
|
|
void
|
|
Item::invalidate_lut () const
|
|
{
|
|
delete _lut;
|
|
_lut = 0;
|
|
}
|
|
|
|
void
|
|
Item::child_changed (bool bbox_changed)
|
|
{
|
|
invalidate_lut ();
|
|
|
|
if (bbox_changed) {
|
|
_bounding_box_dirty = true;
|
|
}
|
|
|
|
if (_parent) {
|
|
_parent->child_changed (bbox_changed);
|
|
}
|
|
}
|
|
|
|
void
|
|
Item::add_items_at_point (Duple const point, vector<Item const *>& items) const
|
|
{
|
|
Rect const bbox = bounding_box ();
|
|
|
|
/* Point is in window coordinate system */
|
|
|
|
if (!bbox || !item_to_window (bbox).contains (point)) {
|
|
return;
|
|
}
|
|
|
|
/* recurse and add any items within our group that contain point.
|
|
Our children are only considered visible if we are, and similarly
|
|
only if we do not ignore events.
|
|
*/
|
|
|
|
vector<Item*> our_items;
|
|
|
|
if (!_items.empty() && visible() && !_ignore_events) {
|
|
ensure_lut ();
|
|
our_items = _lut->items_at_point (point);
|
|
}
|
|
|
|
if (!our_items.empty() || covers (point)) {
|
|
/* this adds this item itself to the list of items at point */
|
|
items.push_back (this);
|
|
}
|
|
|
|
for (vector<Item*>::iterator i = our_items.begin(); i != our_items.end(); ++i) {
|
|
(*i)->add_items_at_point (point, items);
|
|
}
|
|
}
|
|
|
|
void
|
|
Item::set_tooltip (const std::string& s)
|
|
{
|
|
_tooltip = s;
|
|
}
|
|
|
|
void
|
|
Item::start_tooltip_timeout ()
|
|
{
|
|
if (!_tooltip.empty()) {
|
|
_canvas->start_tooltip_timeout (this);
|
|
}
|
|
}
|
|
|
|
void
|
|
Item::stop_tooltip_timeout ()
|
|
{
|
|
_canvas->stop_tooltip_timeout ();
|
|
}
|
|
|
|
void
|
|
Item::dump (ostream& o) const
|
|
{
|
|
ArdourCanvas::Rect bb = bounding_box();
|
|
|
|
o << _canvas->indent() << whoami() << ' ' << this << " self-Visible ? " << self_visible() << " visible ? " << visible() << " layout " << layout_sensitive()
|
|
<< " @ " << position();
|
|
|
|
if (bb) {
|
|
o << endl << _canvas->indent() << "\tbbox: " << bb;
|
|
o << endl << _canvas->indent() << "\tCANVAS bbox: " << item_to_canvas (bb);
|
|
} else {
|
|
o << " bbox unset";
|
|
}
|
|
|
|
o << endl;
|
|
|
|
if (!_items.empty()) {
|
|
|
|
#ifdef CANVAS_DEBUG
|
|
o << _canvas->indent();
|
|
o << " @ " << position();
|
|
o << " Items: " << _items.size();
|
|
o << " Self-Visible ? " << self_visible();
|
|
o << " Visible ? " << visible();
|
|
|
|
Rect bb = bounding_box();
|
|
|
|
if (bb) {
|
|
o << endl << _canvas->indent() << " bbox: " << bb;
|
|
o << endl << _canvas->indent() << " CANVAS bbox: " << item_to_canvas (bb);
|
|
} else {
|
|
o << " bbox unset";
|
|
}
|
|
|
|
o << endl;
|
|
#endif
|
|
|
|
ArdourCanvas::dump_depth++;
|
|
|
|
for (list<Item*>::const_iterator i = _items.begin(); i != _items.end(); ++i) {
|
|
o << **i;
|
|
}
|
|
|
|
ArdourCanvas::dump_depth--;
|
|
}
|
|
}
|
|
|
|
ostream&
|
|
ArdourCanvas::operator<< (ostream& o, const Item& i)
|
|
{
|
|
i.dump (o);
|
|
return o;
|
|
}
|
|
|
|
void
|
|
Item::set_layout_sensitive (bool yn)
|
|
{
|
|
_layout_sensitive = yn;
|
|
|
|
for (list<Item*>::const_iterator i = _items.begin(); i != _items.end(); ++i) {
|
|
(*i)->set_layout_sensitive (yn);
|
|
}
|
|
}
|
|
|
|
void
|
|
Item::bb_clean () const
|
|
{
|
|
_bounding_box_dirty = false;
|
|
}
|
|
|
|
void
|
|
Item::set_pack_options (PackOptions po)
|
|
{
|
|
/* must be called before adding/packing Item in a Container */
|
|
_pack_options = po;
|
|
}
|