91 lines
1.9 KiB
C++
91 lines
1.9 KiB
C++
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/*
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* Copyright (C) 2020 Paul Davis <paul@linuxaudiosystems.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 "kiwi/kiwi.h"
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#include "canvas/constraint_packer.h"
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#include "canvas/rectangle.h"
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using namespace ArdourCanvas;
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ConstraintPacker::ConstraintPacker (Canvas* canvas)
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: Item (canvas)
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{
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}
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ConstraintPacker::ConstraintPacker (Item* parent)
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: Item (parent)
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{
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}
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void
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ConstraintPacker::render (Rect const & area, Cairo::RefPtr<Cairo::Context> context) const
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{
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Item::render_children (area, context);
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}
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void
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ConstraintPacker::compute_bounding_box () const
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{
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_bounding_box = Rect();
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if (_items.empty()) {
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_bounding_box_dirty = false;
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return;
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}
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add_child_bounding_boxes (!collapse_on_hide);
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_bounding_box_dirty = false;
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}
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void
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ConstraintPacker::reset_self ()
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{
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if (_bounding_box_dirty) {
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compute_bounding_box ();
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}
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if (!_bounding_box) {
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self->hide ();
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return;
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}
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Rect r (_bounding_box);
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/* XXX need to shrink by margin */
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self->set (r);
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}
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void
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ConstraintPacker::reposition_children ()
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{
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_bounding_box_dirty = true;
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reset_self ();
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}
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void
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ConstraintPacker::child_changed ()
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{
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/* catch visibility and size changes */
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Item::child_changed ();
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reposition_children ();
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}
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