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/////////////////////////////////////////////////////////////////////////
// Copyright (c) 2011-2015 by Simon Schneegans
//
// 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 3 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, see <http://www.gnu.org/licenses/>.
/////////////////////////////////////////////////////////////////////////

namespace GnomePie {

/////////////////////////////////////////////////////////////////////////
/// This class representing a layer of the center of a pie. Each theme
/// may have plenty of them.
/////////////////////////////////////////////////////////////////////////

public class CenterLayer : GLib.Object {

    /////////////////////////////////////////////////////////////////////
    /// Possible rotation modes.
    /// AUTO:       Turns the layer continously.
    /// TO_MOUSE:   Turns the layer always to the pointer.
    /// TO_ACTIVE:  Turns the layer to the active slice.
    /// TO_HOUR_12: Turns the layer to the position of the current hour.
    /// TO_HOUR_24: Turns the layer to the position of the current hour.
    /// TO_MINUTE:  Turns the layer to the position of the current minute.
    /// TO_SECOND:  Turns the layer to the position of the current second.
    /////////////////////////////////////////////////////////////////////

    public enum RotationMode {AUTO, TO_MOUSE, TO_ACTIVE, TO_HOUR_12,
                              TO_HOUR_24, TO_MINUTE, TO_SECOND}

    /////////////////////////////////////////////////////////////////////
    /// Information on the contained image.
    /////////////////////////////////////////////////////////////////////

    public Image image {get; private set;}
    public string image_file;

    /////////////////////////////////////////////////////////////////////
    /// Properties for the active state of this layer.
    /////////////////////////////////////////////////////////////////////

    public double active_scale {get; private set;}
    public double active_rotation_speed {get; private set;}
    public double active_alpha {get; private set;}
    public bool active_colorize {get; private set;}
    public RotationMode active_rotation_mode {get; private set;}

    /////////////////////////////////////////////////////////////////////
    /// Properties for the inactive state of this layer.
    /////////////////////////////////////////////////////////////////////

    public double inactive_scale {get; private set;}
    public double inactive_rotation_speed {get; private set;}
    public double inactive_alpha {get; private set;}
    public bool inactive_colorize {get; private set;}
    public RotationMode inactive_rotation_mode {get; private set;}

    /////////////////////////////////////////////////////////////////////
    /// The current rotation of this layer. TODO: Remove this.
    /////////////////////////////////////////////////////////////////////

    public double rotation {get; set;}

    /////////////////////////////////////////////////////////////////////
    /// Helper variable for image loading.
    /////////////////////////////////////////////////////////////////////

    private int center_radius;

    /////////////////////////////////////////////////////////////////////
    /// C'tor, initializes all members of the layer.
    /////////////////////////////////////////////////////////////////////

    public CenterLayer(string image_file, int center_radius, double active_scale, double active_rotation_speed,
                                    double active_alpha,   bool active_colorize,   RotationMode active_rotation_mode,
                                    double inactive_scale, double inactive_rotation_speed,
                                    double inactive_alpha, bool inactive_colorize, RotationMode inactive_rotation_mode) {

        this.image_file = image_file;
        this.center_radius = center_radius;

        this.active_scale = active_scale;
        this.active_rotation_speed = active_rotation_speed;
        this.active_alpha = active_alpha;
        this.active_colorize = active_colorize;
        this.active_rotation_mode = active_rotation_mode;

        this.inactive_scale = inactive_scale;
        this.inactive_rotation_speed = inactive_rotation_speed;
        this.inactive_alpha = inactive_alpha;
        this.inactive_colorize = inactive_colorize;
        this.inactive_rotation_mode = inactive_rotation_mode;

        this.rotation = 0.0;
    }

    /////////////////////////////////////////////////////////////////////
    /// Loads the contained image.
    /////////////////////////////////////////////////////////////////////

    public void load_image() {
        this.image = new Image.from_file_at_size(image_file, 2*center_radius, 2*center_radius);
    }
}

}