/*                                                         -*- c++ -*-
 * Copyright (C) 2006-2017 Andreas Persson
 *
 * 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, 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 program; see the file COPYING. If not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA.
 */

#ifndef GIGEDIT_DIMREGIONCHOOSER_H
#define GIGEDIT_DIMREGIONCHOOSER_H

#include <gtkmm/drawingarea.h>
#include <gtkmm/uimanager.h>
#include <gtkmm/menu.h>
#include <gdkmm/window.h>

#include "compat.h"

#ifdef LIBGIG_HEADER_FILE
# include LIBGIG_HEADER_FILE(gig.h)
#else
# include <gig.h>
#endif

#include <set>
#include <map>

class DimRegionChooser : public Gtk::DrawingArea
{
public:
    DimRegionChooser(Gtk::Window& window);
    virtual ~DimRegionChooser();

    void set_region(gig::Region* region);

    sigc::signal<void>& signal_dimregion_selected();
    sigc::signal<void>& signal_region_changed();

    gig::DimensionRegion* get_main_dimregion() const;
    void get_dimregions(const gig::Region* region, bool stereo,
                        std::set<gig::DimensionRegion*>& dimregs) const;
    bool select_dimregion(gig::DimensionRegion* dimrgn);

    // those 3 are ATM only relevant when resizing custom dimension region zones
    void setModifyBothChannels(bool b);
    void setModifyAllDimensionRegions(bool b);
    void setModifyAllRegions(bool b);

protected:
#if (GTKMM_MAJOR_VERSION == 2 && GTKMM_MINOR_VERSION < 90) || GTKMM_MAJOR_VERSION < 2
    virtual bool on_expose_event(GdkEventExpose* e);
#else
    virtual bool on_draw(const Cairo::RefPtr<Cairo::Context>& cr);
#endif
    virtual bool on_button_press_event(GdkEventButton* event);
    virtual bool on_button_release_event(GdkEventButton* event);
    virtual bool on_motion_notify_event(GdkEventMotion* event);
    virtual bool on_focus(Gtk::DirectionType direction);
    bool onKeyPressed(GdkEventKey* key);
    bool onKeyReleased(GdkEventKey* key);
    void refresh_all();
    void split_dimension_zone();
    void delete_dimension_zone();
    void resetSelectedZones();

    Gdk::RGBA red, black, white;

    gig::Instrument* instrument;
    gig::Region* region;

    sigc::signal<void> dimregion_selected;
    sigc::signal<void> region_changed;

    // those 3 are ATM only relevant when resizing custom dimension region zones
    bool modifybothchannels;
    bool modifyalldimregs;
    bool modifyallregions;

    //std::set<gig::DimensionRegion*> dimregs; ///< Reflects which dimension regions are currently selected.
    int focus_line;
    std::map<gig::dimension_t, std::set<int> > dimzones; ///< Reflects which zone(s) of the individual dimension are currently selected.
    int label_width;
    bool labels_changed;
    int nbDimensions;

    // the "main" dimension region is the one that is used to i.e. evaluate the
    // precise custom velocity splits (could also be interpreted for focus stuff,
    // i.e. keyboard arrow key navigation)
    // NOTE: these may *not* necessarily currently be selected !
    gig::dimension_t maindimtype;
    std::map<gig::dimension_t,int> maindimcase;
    int maindimregno;

    // information needed during a resize
    struct {
        bool active;
        enum {
            none,
            left,
            right
        } selected;
        int pos;
        int min;
        int max;
        int dimension;
        gig::dimension_def_t dimensionDef;
        int zone;
    } resize;

    bool multiSelectKeyDown;

    bool cursor_is_resize;
    bool is_in_resize_zone(double x, double y);
    void update_after_resize();

    int h;

    Glib::RefPtr<Gtk::ActionGroup> actionGroup;
    Glib::RefPtr<Gtk::UIManager> uiManager;
    Gtk::Menu* popup_menu_inside_dimregion;
    Gtk::Menu* popup_menu_outside_dimregion;
};

#endif