/*
 * This file is part of gtkD.
 *
 * gtkD is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation; either version 3
 * of the License, or (at your option) any later version, with
 * some exceptions, please read the COPYING file.
 *
 * gtkD 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with gtkD; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110, USA
 */

// generated automatically - do not change
// find conversion definition on APILookup.txt
// implement new conversion functionalities on the wrap.utils pakage


module gtk.ColorChooserT;

public  import gdk.RGBA;
public  import gobject.ObjectG;
public  import gobject.Signals;
public  import gtkc.gtk;
public  import gtkc.gtktypes;
public  import std.algorithm;


/**
 * #GtkColorChooser is an interface that is implemented by widgets
 * for choosing colors. Depending on the situation, colors may be
 * allowed to have alpha (translucency).
 * 
 * In GTK+, the main widgets that implement this interface are
 * #GtkColorChooserWidget, #GtkColorChooserDialog and #GtkColorButton.
 */
public template ColorChooserT(TStruct)
{
	/** Get the main Gtk struct */
	public GtkColorChooser* getColorChooserStruct()
	{
		return cast(GtkColorChooser*)getStruct();
	}


	/**
	 * Adds a palette to the color chooser. If @orientation is horizontal,
	 * the colors are grouped in rows, with @colors_per_line colors
	 * in each row. If @horizontal is %FALSE, the colors are grouped
	 * in columns instead.
	 *
	 * The default color palette of #GtkColorChooserWidget has
	 * 27 colors, organized in columns of 3 colors. The default gray
	 * palette has 9 grays in a single row.
	 *
	 * The layout of the color chooser widget works best when the
	 * palettes have 9-10 columns.
	 *
	 * Calling this function for the first time has the
	 * side effect of removing the default color and gray palettes
	 * from the color chooser.
	 *
	 * If @colors is %NULL, removes all previously added palettes.
	 *
	 * Params:
	 *     orientation = %GTK_ORIENTATION_HORIZONTAL if the palette should
	 *         be displayed in rows, %GTK_ORIENTATION_VERTICAL for columns
	 *     colorsPerLine = the number of colors to show in each row/column
	 *     nColors = the total number of elements in @colors
	 *     colors = the colors of the palette, or %NULL
	 *
	 * Since: 3.4
	 */
	public void addPalette(GtkOrientation orientation, int colorsPerLine, RGBA[] colors)
	{
		GdkRGBA[] colorsArray = new GdkRGBA[colors.length];
		for ( int i = 0; i < colors.length; i++ )
		{
			colorsArray[i] = *(colors[i].getRGBAStruct());
		}
		
		gtk_color_chooser_add_palette(getColorChooserStruct(), orientation, colorsPerLine, cast(int)colors.length, colorsArray.ptr);
	}

	/**
	 * Gets the currently-selected color.
	 *
	 * Params:
	 *     color = a #GdkRGBA to fill in with the current color
	 *
	 * Since: 3.4
	 */
	public void getRgba(out RGBA color)
	{
		GdkRGBA* outcolor = gMalloc!GdkRGBA();
		
		gtk_color_chooser_get_rgba(getColorChooserStruct(), outcolor);
		
		color = ObjectG.getDObject!(RGBA)(outcolor, true);
	}

	/**
	 * Returns whether the color chooser shows the alpha channel.
	 *
	 * Returns: %TRUE if the color chooser uses the alpha channel,
	 *     %FALSE if not
	 *
	 * Since: 3.4
	 */
	public bool getUseAlpha()
	{
		return gtk_color_chooser_get_use_alpha(getColorChooserStruct()) != 0;
	}

	/**
	 * Sets the color.
	 *
	 * Params:
	 *     color = the new color
	 *
	 * Since: 3.4
	 */
	public void setRgba(RGBA color)
	{
		gtk_color_chooser_set_rgba(getColorChooserStruct(), (color is null) ? null : color.getRGBAStruct());
	}

	/**
	 * Sets whether or not the color chooser should use the alpha channel.
	 *
	 * Params:
	 *     useAlpha = %TRUE if color chooser should use alpha channel, %FALSE if not
	 *
	 * Since: 3.4
	 */
	public void setUseAlpha(bool useAlpha)
	{
		gtk_color_chooser_set_use_alpha(getColorChooserStruct(), useAlpha);
	}

	protected class OnColorActivatedDelegateWrapper
	{
		static OnColorActivatedDelegateWrapper[] listeners;
		void delegate(RGBA, ColorChooserIF) dlg;
		gulong handlerId;
		
		this(void delegate(RGBA, ColorChooserIF) dlg)
		{
			this.dlg = dlg;
			this.listeners ~= this;
		}
		
		void remove(OnColorActivatedDelegateWrapper source)
		{
			foreach(index, wrapper; listeners)
			{
				if (wrapper.handlerId == source.handlerId)
				{
					listeners[index] = null;
					listeners = std.algorithm.remove(listeners, index);
					break;
				}
			}
		}
	}

	/**
	 * Emitted when a color is activated from the color chooser.
	 * This usually happens when the user clicks a color swatch,
	 * or a color is selected and the user presses one of the keys
	 * Space, Shift+Space, Return or Enter.
	 *
	 * Params:
	 *     color = the color
	 *
	 * Since: 3.4
	 */
	gulong addOnColorActivated(void delegate(RGBA, ColorChooserIF) dlg, ConnectFlags connectFlags=cast(ConnectFlags)0)
	{
		auto wrapper = new OnColorActivatedDelegateWrapper(dlg);
		wrapper.handlerId = Signals.connectData(
			this,
			"color-activated",
			cast(GCallback)&callBackColorActivated,
			cast(void*)wrapper,
			cast(GClosureNotify)&callBackColorActivatedDestroy,
			connectFlags);
		return wrapper.handlerId;
	}
	
	extern(C) static void callBackColorActivated(GtkColorChooser* colorchooserStruct, GdkRGBA* color, OnColorActivatedDelegateWrapper wrapper)
	{
		wrapper.dlg(ObjectG.getDObject!(RGBA)(color), wrapper.outer);
	}
	
	extern(C) static void callBackColorActivatedDestroy(OnColorActivatedDelegateWrapper wrapper, GClosure* closure)
	{
		wrapper.remove(wrapper);
	}
}