144 lines
5.0 KiB
C++
144 lines
5.0 KiB
C++
/*
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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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#ifndef __CANVAS_CONSTRAINED_ITEM_H__
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#define __CANVAS_CONSTRAINED_ITEM_H__
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#include "kiwi/kiwi.h"
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#include "canvas/types.h"
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#include "canvas/visibility.h"
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namespace ArdourCanvas
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{
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class Item;
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class ConstraintPacker;
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class /* LIBCANVAS_API */ ConstrainedItem
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{
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public:
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ConstrainedItem (Item& i);
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virtual ~ConstrainedItem ();
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Item& item() { return _item; }
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kiwi::Variable& left () { return _left; }
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kiwi::Variable& right () { return _right; }
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kiwi::Variable& top () { return _top; }
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kiwi::Variable& bottom () { return _bottom; }
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kiwi::Variable& width () { return _width; }
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kiwi::Variable& height () { return _height; }
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kiwi::Variable& center_x () { return _center_x; }
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kiwi::Variable& center_y () { return _center_y; }
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kiwi::Variable const & left () const { return _left; }
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kiwi::Variable const & right () const { return _right; }
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kiwi::Variable const & top () const { return _top; }
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kiwi::Variable const & bottom () const { return _bottom; }
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kiwi::Variable const & width () const { return _width; }
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kiwi::Variable const & height () const { return _height; }
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kiwi::Variable const & center_x () const { return _center_x; }
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kiwi::Variable const & center_y () const { return _center_y; }
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kiwi::Variable& left_padding () { return _left_padding; }
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kiwi::Variable& right_padding () { return _right_padding; }
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kiwi::Variable& top_padding () { return _top_padding; }
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kiwi::Variable& bottom_padding () { return _bottom_padding; }
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void constrained (ConstraintPacker const & parent);
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virtual bool involved (kiwi::Constraint const &) const;
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std::vector<kiwi::Constraint> const & constraints() const { return _constraints; }
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void add_constraint (kiwi::Constraint const & c) { _constraints.push_back (c); }
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ConstrainedItem& at (Duple const &);
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ConstrainedItem& size (Duple const &);
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ConstrainedItem& box (Rect const &);
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ConstrainedItem& left_of (ConstrainedItem const &, Distance pad = 0);
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ConstrainedItem& right_of (ConstrainedItem const &, Distance pad = 0);
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ConstrainedItem& above (ConstrainedItem const &, Distance pad = 0);
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ConstrainedItem& below (ConstrainedItem const &, Distance pad = 0);
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ConstrainedItem& x_centered (ConstrainedItem const &, Distance offset = 0);
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ConstrainedItem& y_centered (ConstrainedItem const &, Distance offset = 0);
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ConstrainedItem& centered_on (ConstrainedItem const &, Distance xoffset = 0, Distance yoffset = 0);
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ConstrainedItem& top_aligned_with (ConstrainedItem const &, Distance offset = 0);
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ConstrainedItem& bottom_aligned_with (ConstrainedItem const &, Distance offset = 0);
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ConstrainedItem& left_aligned_with (ConstrainedItem const &, Distance offset = 0);
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ConstrainedItem& right_aligned_with (ConstrainedItem const &, Distance offset = 0);
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ConstrainedItem& same_size_as (ConstrainedItem const &, Distance wdelta = 0, Distance hdelta = 0);
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ConstrainedItem& same_width_as (ConstrainedItem const &, Distance delta = 0);
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ConstrainedItem& same_height_as (ConstrainedItem const &, Distance delta = 0);
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virtual void dump (std::ostream&);
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protected:
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Item& _item;
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std::vector<kiwi::Constraint> _constraints;
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kiwi::Variable _left;
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kiwi::Variable _right;
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kiwi::Variable _top;
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kiwi::Variable _bottom;
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kiwi::Variable _width;
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kiwi::Variable _height;
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kiwi::Variable _left_padding;
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kiwi::Variable _right_padding;
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kiwi::Variable _top_padding;
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kiwi::Variable _bottom_padding;
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/* derived */
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kiwi::Variable _center_x;
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kiwi::Variable _center_y;
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};
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class /* LIBCANVAS_API */ BoxConstrainedItem : public ConstrainedItem
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{
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public:
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BoxConstrainedItem (Item& i, PackOptions primary_axis_opts, PackOptions secondary_axis_opts);
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~BoxConstrainedItem ();
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virtual bool involved (kiwi::Constraint const &) const;
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kiwi::Variable& left_margin () { return _left_margin; }
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kiwi::Variable& right_margin () { return _right_margin; }
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kiwi::Variable& top_margin () { return _top_margin; }
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kiwi::Variable& bottom_margin () { return _bottom_margin; }
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PackOptions primary_axis_pack_options() const { return _primary_axis_pack_options; }
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PackOptions secondary_axis_pack_options() const { return _secondary_axis_pack_options; }
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void dump (std::ostream&);
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private:
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kiwi::Variable _left_margin;
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kiwi::Variable _right_margin;
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kiwi::Variable _top_margin;
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kiwi::Variable _bottom_margin;
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PackOptions _primary_axis_pack_options;
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PackOptions _secondary_axis_pack_options;
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};
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}
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#endif
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