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/*
* Copyright (C) 2017 Paul Davis <paul@linuxaudiosystems.com>
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef __CANVAS_GRID_H__
#define __CANVAS_GRID_H__
#include <map>
#include "canvas/item.h"
namespace ArdourCanvas
{
class Rectangle;
/** Canvas container that renders its children in a grid layout
*/
class LIBCANVAS_API Grid : public Item
{
public:
Grid (Canvas *);
Grid (Item *);
Grid (Item *, Duple const & position);
void set_row_spacing (double s);
void set_col_spacing (double s);
void set_padding (double top, double right = -1.0, double bottom = -1.0, double left = -1.0);
void set_margin (double top, double right = -1.0, double bottom = -1.0, double left = -1.0);
/* aliases so that CSS box model terms work */
void set_border_width (double w) { set_outline_width (w); }
void set_border_color (Gtkmm2ext::Color c) { set_outline_color (c); }
void place (Item*, double x, double y, double col_span = 1, double row_span = 1);
void set_collapse_on_hide (bool);
void set_homogenous (bool);
void compute_bounding_box () const;
void render (Rect const & area, Cairo::RefPtr<Cairo::Context> context) const;
protected:
double row_spacing;
double col_spacing;
double top_padding, right_padding, bottom_padding, left_padding;
double top_margin, right_margin, bottom_margin, left_margin;
void child_changed ();
private:
struct ChildInfo {
Item* item;
double x;
double y;
double col_span;
double row_span;
};
typedef std::map<Item*,ChildInfo> CoordsByItem;
CoordsByItem coords_by_item;
Rectangle *bg;
bool collapse_on_hide;
bool homogenous;
void reset_bg ();
void reposition_children ();
};
}
#endif
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