/*
 * Copyright (c) 2009-2016, Albertas Vyšniauskas
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
 *
 *     * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
 *     * Neither the name of the software author nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "GenerateScheme.h"
#include "ColorObject.h"
#include "ColorSourceManager.h"
#include "ColorSource.h"
#include "DragDrop.h"
#include "GlobalState.h"
#include "ToolColorNaming.h"
#include "uiUtilities.h"
#include "ColorList.h"
#include "MathUtil.h"
#include "ColorRYB.h"
#include "gtk/ColorWidget.h"
#include "gtk/ColorWheel.h"
#include "ColorWheelType.h"
#include "uiColorInput.h"
#include "CopyPaste.h"
#include "Converter.h"
#include "DynvHelpers.h"
#include "Internationalisation.h"
#include "Random.h"
#include "color_names/ColorNames.h"
#include "Clipboard.h"
#include "StandardMenu.h"
#include "NearestColorsMenu.h"
#include <gdk/gdkkeysyms.h>
#include <boost/lexical_cast.hpp>
#include <math.h>
#include <string.h>
#include <sstream>
#include <iostream>
using namespace std;

#define MAX_COLOR_WIDGETS		6

typedef struct GenerateSchemeArgs{
	ColorSource source;

	GtkWidget* main;
	GtkWidget* statusbar;

	GtkWidget *gen_type;
	GtkWidget *wheel_type;
	GtkWidget *color_wheel;
	GtkWidget *hue;
	GtkWidget *saturation;
	GtkWidget *lightness;

	GtkWidget *color_previews;
	GtkWidget *last_focused_color;

	GtkWidget *colors[MAX_COLOR_WIDGETS];
	double color_hue[MAX_COLOR_WIDGETS];

	struct{
		double orig_hue;
		double orig_saturation;
		double orig_value;

		double hue;
		double saturation;
		double value;
	}mod[MAX_COLOR_WIDGETS];

	bool wheel_locked;

	int colors_visible;

	struct dynvSystem *params;

	GlobalState* gs;
	ColorList *preview_color_list;
}GenerateSchemeArgs;

const SchemeType scheme_types[]={
	{N_("Complementary"), 1, 1, {180}},
	{N_("Analogous"), 5, 1, {30}},
	{N_("Triadic"), 2, 1, {120}},
	{N_("Split-Complementary"), 2, 2, {150, 60}},
	{N_("Rectangle (tetradic)"), 3, 2, {60, 120}},
	{N_("Square"), 3, 1, {90}},
	{N_("Neutral"), 5, 1, {15}},
	{N_("Clash"), 2, 2, {90, 180}},
	{N_("Five-Tone"), 4, 4, {115, 40, 50, 40}},
	{N_("Six-Tone"), 5, 2, {30, 90}},
};

class GenerateSchemeColorNameAssigner: public ToolColorNameAssigner {
	protected:
		stringstream m_stream;
		int32_t m_ident;
		int32_t m_schemetype;
	public:
		GenerateSchemeColorNameAssigner(GlobalState *gs):
			ToolColorNameAssigner(gs)
		{
		}
		void assign(ColorObject *color_object, const Color *color, const int32_t ident, const int32_t schemetype)
		{
			m_ident = ident;
			m_schemetype = schemetype;
			ToolColorNameAssigner::assign(color_object, color);
		}
		virtual std::string getToolSpecificName(ColorObject *color_object, const Color *color)
		{
			m_stream.str("");
			m_stream << _("scheme") << " " << _(generate_scheme_get_scheme_type(m_schemetype)->name) << " #" << m_ident << "[" << color_names_get(m_gs->getColorNames(), color, false) << "]";
			return m_stream.str();
		}
};

static int set_rgb_color(GenerateSchemeArgs *args, ColorObject* color, uint32_t color_index);
static int set_rgb_color_by_widget(GenerateSchemeArgs *args, ColorObject* color, GtkWidget* color_widget);

static void calc(GenerateSchemeArgs *args, bool preview, bool save_settings){

	int32_t type = gtk_combo_box_get_active(GTK_COMBO_BOX(args->gen_type));
	int32_t wheel_type = gtk_combo_box_get_active(GTK_COMBO_BOX(args->wheel_type));

	gtk_color_wheel_set_color_wheel_type(GTK_COLOR_WHEEL(args->color_wheel), &color_wheel_types_get()[wheel_type]);
	gtk_color_wheel_set_n_colors(GTK_COLOR_WHEEL(args->color_wheel), generate_scheme_get_scheme_type(type)->colors + 1);

	double hue = gtk_range_get_value(GTK_RANGE(args->hue));
	double saturation = gtk_range_get_value(GTK_RANGE(args->saturation));
	double lightness = gtk_range_get_value(GTK_RANGE(args->lightness));

	if (save_settings){
		dynv_set_int32(args->params, "type", type);
		dynv_set_int32(args->params, "wheel_type", wheel_type);
		dynv_set_float(args->params, "hue", hue);
		dynv_set_float(args->params, "saturation", saturation);
		dynv_set_float(args->params, "lightness", lightness);
	}

	hue /= 360.0;
	saturation /= 100.0;
	lightness /= 100.0;

	Color color, hsl, r;
	gint step_i;

	ColorList *color_list;
	if (preview)
		color_list = args->preview_color_list;
	else
		color_list = args->gs->getColorList();

	const ColorWheelType *wheel = &color_wheel_types_get()[wheel_type];

	float chaos = 0;
	float hue_offset = 0;
	float hue_step;
	Color hsv;

	for (step_i = 0; step_i <= generate_scheme_get_scheme_type(type)->colors; ++step_i) {

		wheel->hue_to_hsl(wrap_float(hue + args->mod[step_i].hue), &hsl);
		hsl.hsl.lightness = clamp_float(hsl.hsl.lightness + lightness, 0, 1);
		hsl.hsl.saturation = clamp_float(hsl.hsl.saturation * saturation, 0, 1);

		color_hsl_to_hsv(&hsl, &hsv);
		args->mod[step_i].orig_hue = hue;
		args->mod[step_i].orig_saturation = hsv.hsv.saturation;
		args->mod[step_i].orig_value = hsv.hsv.value;

		hsv.hsv.saturation = clamp_float(hsv.hsv.saturation + args->mod[step_i].saturation, 0, 1);
		hsv.hsv.value = clamp_float(hsv.hsv.value + args->mod[step_i].value, 0, 1);

		color_hsv_to_rgb(&hsv, &r);

		ColorObject *color_object = color_list_new_color_object(color_list, &r);
		args->color_hue[step_i] = hue_offset;
		color_list_add_color_object(color_list, color_object, 1);
		color_object->release();

		gtk_color_wheel_set_hue(GTK_COLOR_WHEEL(args->color_wheel), step_i, wrap_float(hue + args->mod[step_i].hue));
		gtk_color_wheel_set_saturation(GTK_COLOR_WHEEL(args->color_wheel), step_i, hsv.hsv.saturation);
		gtk_color_wheel_set_value(GTK_COLOR_WHEEL(args->color_wheel), step_i, hsv.hsv.value);

		hue_step = (generate_scheme_get_scheme_type(type)->turn[step_i % generate_scheme_get_scheme_type(type)->turn_types]) / (360.0)
			+ chaos*(((random_get(args->gs->getRandom()) & 0xFFFFFFFF) / (gdouble)0xFFFFFFFF) - 0.5);

		hue = wrap_float(hue + hue_step);
		hue_offset = wrap_float(hue_offset + hue_step);
	}
	if (preview){
		size_t total_colors = generate_scheme_get_scheme_type(type)->colors + 1;
		if (total_colors > MAX_COLOR_WIDGETS) total_colors = MAX_COLOR_WIDGETS;
		for (size_t i = args->colors_visible; i > total_colors; --i)
			gtk_widget_hide(args->colors[i-1]);
		for (size_t i = args->colors_visible; i < total_colors; ++i)
			gtk_widget_show(args->colors[i]);
		args->colors_visible = total_colors;
		size_t j = 0;
		for (ColorList::iter i = color_list->colors.begin(); i != color_list->colors.end(); ++i){
			color = (*i)->getColor();
			string text;
			converter_get_text(color, ConverterArrayType::display, args->gs, text);
			gtk_color_set_color(GTK_COLOR(args->colors[j]), &color, text.c_str());
			++j;
			if (j >= total_colors) break;
		}
	}
}

static void update(GtkWidget *widget, GenerateSchemeArgs *args ){
	color_list_remove_all(args->preview_color_list);
	calc(args, true, false);
}
static void hue_changed_cb(GtkWidget *widget, gint color_id, GenerateSchemeArgs *args)
{
	if (args->wheel_locked){
		double hue = gtk_range_get_value(GTK_RANGE(args->hue)) / 360.0;
		hue = wrap_float(hue - args->mod[color_id].hue + gtk_color_wheel_get_hue(GTK_COLOR_WHEEL(widget), color_id) - args->mod[color_id].orig_hue);

		gtk_range_set_value(GTK_RANGE(args->hue), hue * 360.0);
	}else{
		args->mod[color_id].hue = gtk_color_wheel_get_hue(GTK_COLOR_WHEEL(widget), color_id) - args->mod[color_id].orig_hue;
		update(widget, args);
	}
}
static void saturation_value_changed_cb(GtkWidget *widget, gint color_id, GenerateSchemeArgs *args)
{
	if (args->wheel_locked){
		double saturation = gtk_range_get_value(GTK_RANGE(args->saturation)) / 100.0;
		double lightness = gtk_range_get_value(GTK_RANGE(args->lightness)) / 100.0;

		//lightness = gtk_color_wheel_get_value(GTK_COLOR_WHEEL(widget), color_id);

		gtk_range_set_value(GTK_RANGE(args->saturation), saturation * 100.0);
		gtk_range_set_value(GTK_RANGE(args->lightness), lightness * 100.0);
	}else{
		args->mod[color_id].saturation = gtk_color_wheel_get_saturation(GTK_COLOR_WHEEL(widget), color_id) - args->mod[color_id].orig_saturation;
		args->mod[color_id].value = gtk_color_wheel_get_value(GTK_COLOR_WHEEL(widget), color_id) - args->mod[color_id].orig_value;

		update(widget, args);
	}
}

static void color_wheel_locked_toggled_cb(GtkWidget* widget, GenerateSchemeArgs* args){
	args->wheel_locked = gtk_check_menu_item_get_active(GTK_CHECK_MENU_ITEM(widget));
	gtk_color_wheel_set_block_editable(GTK_COLOR_WHEEL(args->color_wheel), !args->wheel_locked);
}

static void color_reset_scheme_cb(GtkWidget *widget, GenerateSchemeArgs *args){
	for (int i = 0; i < MAX_COLOR_WIDGETS; ++i){
		args->mod[i].hue = 0;
		args->mod[i].saturation = 0;
		args->mod[i].value = 0;
	}
	update(widget, args);
}

static void color_wheel_show_menu(GtkWidget* widget, GenerateSchemeArgs* args, GdkEventButton *event ){
	GtkWidget *menu;
	GtkWidget* item;

	menu = gtk_menu_new();

	item = gtk_check_menu_item_new_with_mnemonic(_("_Linked"));
	gtk_check_menu_item_set_active(GTK_CHECK_MENU_ITEM(item), args->wheel_locked);
	gtk_menu_shell_append(GTK_MENU_SHELL(menu), item);
	g_signal_connect(G_OBJECT(item), "toggled", G_CALLBACK(color_wheel_locked_toggled_cb), args);

	gtk_menu_shell_append (GTK_MENU_SHELL (menu), gtk_separator_menu_item_new ());

	item = gtk_menu_item_new_with_image(_("_Reset scheme"), gtk_image_new_from_stock(GTK_STOCK_CANCEL, GTK_ICON_SIZE_MENU));
	gtk_menu_shell_append(GTK_MENU_SHELL(menu), item);
	g_signal_connect(G_OBJECT (item), "activate", G_CALLBACK(color_reset_scheme_cb), args);

	gtk_widget_show_all(GTK_WIDGET(menu));

	gint32 button, event_time;
	if (event){
		button = event->button;
		event_time = event->time;
	}else{
		button = 0;
		event_time = gtk_get_current_event_time ();
	}

	gtk_menu_popup(GTK_MENU(menu), nullptr, nullptr, nullptr, nullptr, button, event_time);

	g_object_ref_sink(menu);
	g_object_unref(menu);
}

static gboolean color_wheel_button_press_cb(GtkWidget *widget, GdkEventButton *event, GenerateSchemeArgs* args) {
	if (event->button == 3 && event->type == GDK_BUTTON_PRESS){
		color_wheel_show_menu(widget, args, event);
	}
	return false;
}

static void color_wheel_popup_menu_cb(GtkWidget *widget, GenerateSchemeArgs* args){
	color_wheel_show_menu(widget, args, 0);
}

static void on_color_paste(GtkWidget *widget, gpointer item) {
	GenerateSchemeArgs* args=(GenerateSchemeArgs*)item;

	GtkWidget* color_widget = GTK_WIDGET(g_object_get_data(G_OBJECT(widget), "color_widget"));

	ColorObject* color_object;
	if (copypaste_get_color_object(&color_object, args->gs) == 0){
		set_rgb_color_by_widget(args, color_object, color_widget);
		color_object->release();
	}
}

static void color_reset_cb(GtkWidget *widget, GenerateSchemeArgs *args){
	GtkWidget* color_widget = GTK_WIDGET(g_object_get_data(G_OBJECT(widget), "color_widget"));

	for (int i = 0; i < args->colors_visible; ++i){
		if (args->colors[i] == color_widget){

			args->mod[i].hue = 0;
			args->mod[i].saturation = 0;
			args->mod[i].value = 0;

			update(widget, args);
			return;
		}
	}
}

static void on_color_edit(GtkWidget *widget, gpointer item) {
	GenerateSchemeArgs* args=(GenerateSchemeArgs*)item;

	GtkWidget* color_widget = GTK_WIDGET(g_object_get_data(G_OBJECT(widget), "color_widget"));

	Color c;
	gtk_color_get_color(GTK_COLOR(color_widget), &c);
	ColorObject* color_object = color_list_new_color_object(args->gs->getColorList(), &c);
	ColorObject* new_color_object = 0;

	if (dialog_color_input_show(GTK_WINDOW(gtk_widget_get_toplevel(args->main)), args->gs, color_object, &new_color_object ) == 0){

		set_rgb_color_by_widget(args, new_color_object, color_widget);

		new_color_object->release();
	}

	color_object->release();
}

static string identify_color_widget(GtkWidget *widget, GenerateSchemeArgs *args)
{
	for (int i = 0; i < MAX_COLOR_WIDGETS; ++i){
		if (args->colors[i] == widget){
			return "result " + boost::lexical_cast<string>(i + 1);
		}
	}
	return "unknown";
}

static void add_color_to_palette(GtkWidget *color_widget, GenerateSchemeColorNameAssigner &name_assigner, GenerateSchemeArgs *args)
{
	Color c;
	ColorObject *color_object;
	string widget_ident;
	int32_t type = gtk_combo_box_get_active(GTK_COMBO_BOX(args->gen_type));
	gtk_color_get_color(GTK_COLOR(color_widget), &c);
	color_object = color_list_new_color_object(args->gs->getColorList(), &c);
	widget_ident = identify_color_widget(color_widget, args);
	name_assigner.assign(color_object, &c, atoi(widget_ident.c_str()+7), type);
	color_list_add_color_object(args->gs->getColorList(), color_object, 1);
	color_object->release();
}

static void on_color_add_to_palette(GtkWidget *widget, gpointer item) {
	GenerateSchemeArgs* args = (GenerateSchemeArgs*)item;
	GtkWidget *color_widget = GTK_WIDGET(g_object_get_data(G_OBJECT(widget), "color_widget"));
	GenerateSchemeColorNameAssigner name_assigner(args->gs);
	add_color_to_palette(color_widget, name_assigner, args);
}

static void on_color_add_all_to_palette(GtkWidget *widget, gpointer item) {
	GenerateSchemeArgs* args = (GenerateSchemeArgs*)item;
	GenerateSchemeColorNameAssigner name_assigner(args->gs);

	for (int i = 0; i < args->colors_visible; ++i){
		add_color_to_palette(args->colors[i], name_assigner, args);
	}
}

static gboolean color_focus_in_cb(GtkWidget *widget, GdkEventFocus *event, GenerateSchemeArgs *args){
	args->last_focused_color = widget;

	for (int i = 0; i < MAX_COLOR_WIDGETS; ++i){
		if (widget == args->colors[i]){
			gtk_color_wheel_set_selected(GTK_COLOR_WHEEL(args->color_wheel), i);
			return false;
		}
	}

	return false;
}

static void on_color_activate(GtkWidget *widget, gpointer item) {
	GenerateSchemeArgs* args=(GenerateSchemeArgs*)item;
	GenerateSchemeColorNameAssigner name_assigner(args->gs);
	add_color_to_palette(widget, name_assigner, args);
}

static void color_show_menu(GtkWidget* widget, GenerateSchemeArgs* args, GdkEventButton *event ){
	GtkWidget *menu;
	GtkWidget* item;

	menu = gtk_menu_new ();

	item = gtk_menu_item_new_with_image (_("_Add to palette"), gtk_image_new_from_stock(GTK_STOCK_ADD, GTK_ICON_SIZE_MENU));
	gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
	g_signal_connect (G_OBJECT (item), "activate", G_CALLBACK (on_color_add_to_palette), args);
	g_object_set_data(G_OBJECT(item), "color_widget", widget);

	item = gtk_menu_item_new_with_image (_("A_dd all to palette"), gtk_image_new_from_stock(GTK_STOCK_ADD, GTK_ICON_SIZE_MENU));
	gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
	g_signal_connect (G_OBJECT (item), "activate", G_CALLBACK (on_color_add_all_to_palette), args);
	g_object_set_data(G_OBJECT(item), "color_widget", widget);

	gtk_menu_shell_append(GTK_MENU_SHELL(menu), gtk_separator_menu_item_new());
	Color c;
	gtk_color_get_color(GTK_COLOR(widget), &c);
	ColorObject *color_object = color_list_new_color_object(args->gs->getColorList(), &c);
	StandardMenu::appendMenu(menu, color_object, args->gs);
	color_object->release();
	gtk_menu_shell_append(GTK_MENU_SHELL(menu), gtk_separator_menu_item_new());

	item = gtk_menu_item_new_with_image (_("_Edit..."), gtk_image_new_from_stock(GTK_STOCK_EDIT, GTK_ICON_SIZE_MENU));
	gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
	g_signal_connect (G_OBJECT (item), "activate", G_CALLBACK (on_color_edit), args);
	g_object_set_data(G_OBJECT(item), "color_widget", widget);

	item = gtk_menu_item_new_with_image (_("_Paste"), gtk_image_new_from_stock(GTK_STOCK_PASTE, GTK_ICON_SIZE_MENU));
	gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
	g_signal_connect (G_OBJECT (item), "activate", G_CALLBACK (on_color_paste), args);
	g_object_set_data(G_OBJECT(item), "color_widget", widget);

	if (copypaste_is_color_object_available(args->gs) != 0){
		gtk_widget_set_sensitive(item, false);
	}

	gtk_menu_shell_append (GTK_MENU_SHELL (menu), gtk_separator_menu_item_new ());

	item = gtk_menu_item_new_with_image(_("_Reset"), gtk_image_new_from_stock(GTK_STOCK_CANCEL, GTK_ICON_SIZE_MENU));
	gtk_menu_shell_append(GTK_MENU_SHELL(menu), item);
	g_signal_connect(G_OBJECT (item), "activate", G_CALLBACK(color_reset_cb), args);
	g_object_set_data(G_OBJECT(item), "color_widget", widget);

	gtk_widget_show_all (GTK_WIDGET(menu));

	gint32 button, event_time;
	if (event){
		button = event->button;
		event_time = event->time;
	}else{
		button = 0;
		event_time = gtk_get_current_event_time ();
	}

	gtk_menu_popup (GTK_MENU (menu), nullptr, nullptr, nullptr, nullptr, button, event_time);

	g_object_ref_sink(menu);
	g_object_unref(menu);
}

static gboolean on_color_button_press (GtkWidget *widget, GdkEventButton *event, GenerateSchemeArgs* args) {
	if (event->button == 3 && event->type == GDK_BUTTON_PRESS){
		color_show_menu(widget, args, event);
	}
	return false;
}

static void on_color_popup_menu(GtkWidget *widget, GenerateSchemeArgs* args){
	color_show_menu(widget, args, 0);
}

static gboolean on_color_key_press (GtkWidget *widget, GdkEventKey *event, GenerateSchemeArgs* args){
	guint modifiers = gtk_accelerator_get_default_mod_mask();

	Color c;
	ColorObject* color_object;
	GtkWidget* color_widget = widget;

	switch(event->keyval){
		case GDK_KEY_c:
			if ((event->state&modifiers) == GDK_CONTROL_MASK){
				gtk_color_get_color(GTK_COLOR(color_widget), &c);
				Clipboard::set(c, args->gs);
				return true;
			}
			return false;
			break;

		case GDK_KEY_v:
			if ((event->state&modifiers) == GDK_CONTROL_MASK){
				if (copypaste_get_color_object(&color_object, args->gs) == 0){
					set_rgb_color_by_widget(args, color_object, color_widget);
					color_object->release();
				}
				return true;
			}
			return false;
			break;

		default:
			return false;
		break;
	}
	return false;
}

static gchar* format_saturation_value_cb (GtkScale *scale, gdouble value){
	return g_strdup_printf ("%d%%", int(value));
}

static gchar* format_lightness_value_cb (GtkScale *scale, gdouble value){
	if (value>=0)
		return g_strdup_printf ("+%d%%", int(value));
	else
		return g_strdup_printf ("-%d%%", -int(value));
}

static int source_destroy(GenerateSchemeArgs *args){
	color_list_destroy(args->preview_color_list);
	dynv_system_release(args->params);
	gtk_widget_destroy(args->main);
	delete args;
	return 0;
}

static int source_get_color(GenerateSchemeArgs *args, ColorObject** color){
	GenerateSchemeColorNameAssigner name_assigner(args->gs);
	Color c;
	string widget_ident;
	int32_t type = gtk_combo_box_get_active(GTK_COMBO_BOX(args->gen_type));
	if (args->last_focused_color){
		gtk_color_get_color(GTK_COLOR(args->last_focused_color), &c);
		widget_ident = identify_color_widget(args->last_focused_color, args);
	}else{
		gtk_color_get_color(GTK_COLOR(args->colors[0]), &c);
		widget_ident = identify_color_widget(args->colors[0], args);
	}
	*color = color_list_new_color_object(args->gs->getColorList(), &c);
	name_assigner.assign(*color, &c, atoi(widget_ident.c_str() + 7), type);
	return 0;
}

static int set_rgb_color_by_widget(GenerateSchemeArgs *args, ColorObject* color_object, GtkWidget* color_widget){
	for (int i=0; i<args->colors_visible; ++i){
		if (args->colors[i] == color_widget){
			set_rgb_color(args, color_object, i);
			return 0;
		}
	}
	return -1;
}

static int set_rgb_color(GenerateSchemeArgs *args, ColorObject* color_object, uint32_t color_index)
{
	Color color = color_object->getColor();
	double hue;
	double saturation;
	double lightness;
	double shifted_hue;
	Color hsl, hsv, hsl_results;
	color_rgb_to_hsv(&color, &hsv);
	//hsv.hsv.saturation = clamp_float(hsv.hsv.saturation - args->mod[color_index].saturation, 0, 1);
	//hsv.hsv.value = clamp_float(hsv.hsv.value - args->mod[color_index].value, 0, 1);
	color_hsv_to_hsl(&hsv, &hsl);
	int32_t wheel_type = gtk_combo_box_get_active(GTK_COMBO_BOX(args->wheel_type));
	const ColorWheelType *wheel = &color_wheel_types_get()[wheel_type];
	wheel->rgbhue_to_hue(hsl.hsl.hue, &hue);
	//color_rgbhue_to_rybhue(hsl.hsl.hue, &hue);
	shifted_hue = wrap_float(hue - args->color_hue[color_index] - args->mod[color_index].hue);
	wheel->hue_to_hsl(hue, &hsl_results);
	saturation = hsl.hsl.saturation * 1/hsl_results.hsl.saturation;
	lightness = hsl.hsl.lightness - hsl_results.hsl.lightness;
	shifted_hue *= 360.0;
	saturation *= 100.0;
	lightness *= 100.0;
	gtk_range_set_value(GTK_RANGE(args->hue), shifted_hue);
	gtk_range_set_value(GTK_RANGE(args->saturation), saturation);
	gtk_range_set_value(GTK_RANGE(args->lightness), lightness);
	return 0;
}
static int source_set_nth_color(GenerateSchemeArgs *args, uint32_t color_n, ColorObject* color_object)
{
	if (color_n < 0 || color_n > 6) return -1;
	return set_rgb_color(args, color_object, color_n);
}
static int source_set_color(GenerateSchemeArgs *args, ColorObject *color_object)
{
	if (args->last_focused_color){
		return set_rgb_color_by_widget(args, color_object, args->last_focused_color);
	}else{
		return set_rgb_color(args, color_object, 0);
	}
}
static int source_activate(GenerateSchemeArgs *args)
{
	auto chain = args->gs->getTransformationChain();
	for (uint32_t i = 0; i < MAX_COLOR_WIDGETS; ++i){
		gtk_color_set_transformation_chain(GTK_COLOR(args->colors[i]), chain);
	}
	gtk_statusbar_push(GTK_STATUSBAR(args->statusbar), gtk_statusbar_get_context_id(GTK_STATUSBAR(args->statusbar), "empty"), "");
	return 0;
}
static int source_deactivate(GenerateSchemeArgs *args)
{
	color_list_remove_all(args->preview_color_list);
	calc(args, true, true);
	dynv_set_bool(args->params, "wheel_locked", args->wheel_locked);
	float hsv_shift_array[MAX_COLOR_WIDGETS * 3];
	for (uint32_t i = 0; i < MAX_COLOR_WIDGETS; ++i){
		hsv_shift_array[i * 3 + 0] = args->mod[i].hue;
		hsv_shift_array[i * 3 + 1] = args->mod[i].saturation;
		hsv_shift_array[i * 3 + 2] = args->mod[i].value;
	}
	dynv_set_float_array(args->params, "hsv_shift", hsv_shift_array, MAX_COLOR_WIDGETS * 3);
	return 0;
}

static ColorObject* get_color_object(struct DragDrop* dd){
	GenerateSchemeArgs* args = (GenerateSchemeArgs*)dd->userdata;
	ColorObject* color_object;
	if (source_get_color(args, &color_object) == 0){
		return color_object;
	}
	return 0;
}

static int set_color_object_at(struct DragDrop* dd, ColorObject* color_object, int x, int y, bool move)
{
	GenerateSchemeArgs* args = static_cast<GenerateSchemeArgs*>(dd->userdata);
	set_rgb_color(args, color_object, (uintptr_t)dd->userdata2);
	return 0;
}

static int set_color_object_at_color_wheel(struct DragDrop* dd, ColorObject* color_object, int x, int y, bool move){
	int item = gtk_color_wheel_get_at(GTK_COLOR_WHEEL(dd->widget), x, y);
	GenerateSchemeArgs* args = static_cast<GenerateSchemeArgs*>(dd->userdata);

	if (item == -1){

	}else if (item >= 0){
		Color color, hsl;
		double hue;
		color = color_object->getColor();
		color_rgb_to_hsl(&color, &hsl);

		int32_t wheel_type = gtk_combo_box_get_active(GTK_COMBO_BOX(args->wheel_type));
		const ColorWheelType *wheel = &color_wheel_types_get()[wheel_type];
		wheel->rgbhue_to_hue(hsl.hsl.hue, &hue);

		if (args->wheel_locked){
			double hue_shift = (hue - args->mod[item].orig_hue) - args->mod[item].hue;
			hue = wrap_float(gtk_range_get_value(GTK_RANGE(args->hue)) / 360.0 + hue_shift);

			gtk_range_set_value(GTK_RANGE(args->hue), hue * 360.0);
		}else{
			args->mod[item].hue = hue - args->mod[item].orig_hue;
			update(dd->widget, args);
		}
	}
	return 0;
}

static bool test_at_color_wheel(struct DragDrop* dd, int x, int y){
	int item = gtk_color_wheel_get_at(GTK_COLOR_WHEEL(dd->widget), x, y);
	if (item == -1){

	}else if (item >= 0){

		return true;
	}
	return false;
}

static ColorSource* source_implement(ColorSource *source, GlobalState *gs, struct dynvSystem *dynv_namespace){
	GenerateSchemeArgs* args = new GenerateSchemeArgs;

	args->params = dynv_system_ref(dynv_namespace);
	args->statusbar = gs->getStatusBar();

	color_source_init(&args->source, source->identificator, source->hr_name);
	args->source.destroy = (int (*)(ColorSource *source))source_destroy;
	args->source.get_color = (int (*)(ColorSource *source, ColorObject** color))source_get_color;
	args->source.set_color = (int (*)(ColorSource *source, ColorObject* color))source_set_color;
	args->source.set_nth_color = (int (*)(ColorSource *source, size_t color_n, ColorObject* color))source_set_nth_color;
	args->source.deactivate = (int (*)(ColorSource *source))source_deactivate;
	args->source.activate = (int (*)(ColorSource *source))source_activate;

	uint32_t hsv_shift_array_size = 0;
	float *hsv_shift_array = dynv_get_float_array_wd(args->params, "hsv_shift", 0, 0, &hsv_shift_array_size);
	hsv_shift_array_size /= 3;

	for (uint32_t i = 0; i < MAX_COLOR_WIDGETS; ++i){
		if (i < hsv_shift_array_size){
			args->mod[i].hue = hsv_shift_array[i * 3 + 0];
			args->mod[i].saturation = hsv_shift_array[i * 3 + 1];
			args->mod[i].value = hsv_shift_array[i * 3 + 2];
		}else{
			args->mod[i].hue = 0;
			args->mod[i].saturation = 0;
			args->mod[i].value = 0;
		}
	}
	if (hsv_shift_array) delete [] hsv_shift_array;
	GtkWidget *table, *vbox, *hbox, *widget, *hbox2;
	hbox = gtk_hbox_new(FALSE, 5);
	vbox = gtk_vbox_new(FALSE, 5);
	gtk_box_pack_start(GTK_BOX(hbox), vbox, TRUE, TRUE, 5);
	args->color_previews = gtk_table_new(3, 2, false);
	gtk_box_pack_start(GTK_BOX(vbox), args->color_previews, true, true, 0);
	struct DragDrop dd;
	dragdrop_init(&dd, gs);
	dd.userdata = args;
	dd.get_color_object = get_color_object;
	dd.set_color_object_at = set_color_object_at;
	for (intptr_t i = 0; i < MAX_COLOR_WIDGETS; ++i){
		widget = gtk_color_new();
		gtk_color_set_rounded(GTK_COLOR(widget), true);
		gtk_color_set_roundness(GTK_COLOR(widget), 5);
		gtk_color_set_hcenter(GTK_COLOR(widget), true);

		gtk_table_attach(GTK_TABLE(args->color_previews), widget, i % 2, (i % 2) + 1, i / 2, i / 2 + 1, GtkAttachOptions(GTK_FILL | GTK_EXPAND), GtkAttachOptions(GTK_FILL | GTK_EXPAND), 0, 0);
		args->colors[i] = widget;

		g_signal_connect(G_OBJECT(widget), "button-press-event", G_CALLBACK(on_color_button_press), args);
		g_signal_connect(G_OBJECT(widget), "activated", G_CALLBACK(on_color_activate), args);
		g_signal_connect(G_OBJECT(widget), "key_press_event", G_CALLBACK(on_color_key_press), args);
		g_signal_connect(G_OBJECT(widget), "popup-menu", G_CALLBACK(on_color_popup_menu), args);
		g_signal_connect(G_OBJECT(widget), "focus-in-event", G_CALLBACK(color_focus_in_cb), args);

		//setup drag&drop
		gtk_drag_dest_set( widget, GtkDestDefaults(GTK_DEST_DEFAULT_MOTION | GTK_DEST_DEFAULT_HIGHLIGHT), 0, 0, GDK_ACTION_COPY);
		gtk_drag_source_set( widget, GDK_BUTTON1_MASK, 0, 0, GDK_ACTION_COPY);
		dd.handler_map = dynv_system_get_handler_map(gs->getColorList()->params);
		dd.userdata2 = (void*)i;
		dragdrop_widget_attach(widget, DragDropFlags(DRAGDROP_SOURCE | DRAGDROP_DESTINATION), &dd);
	}

	hbox2 = gtk_hbox_new(FALSE, 5);
	gtk_box_pack_start(GTK_BOX(vbox), hbox2, false, false, 0);
	args->color_wheel = gtk_color_wheel_new();
	gtk_box_pack_start(GTK_BOX(hbox2), args->color_wheel, false, false, 0);
	g_signal_connect(G_OBJECT(args->color_wheel), "hue_changed", G_CALLBACK(hue_changed_cb), args);
	g_signal_connect(G_OBJECT(args->color_wheel), "saturation_value_changed", G_CALLBACK(saturation_value_changed_cb), args);
	g_signal_connect(G_OBJECT(args->color_wheel), "popup-menu", G_CALLBACK(color_wheel_popup_menu_cb), args);
	g_signal_connect(G_OBJECT(args->color_wheel), "button-press-event", G_CALLBACK(color_wheel_button_press_cb), args);
	args->wheel_locked = dynv_get_bool_wd(args->params, "wheel_locked", true);
	gtk_color_wheel_set_block_editable(GTK_COLOR_WHEEL(args->color_wheel), !args->wheel_locked);

	gtk_drag_dest_set(args->color_wheel, GtkDestDefaults(GTK_DEST_DEFAULT_MOTION | GTK_DEST_DEFAULT_HIGHLIGHT), 0, 0, GDK_ACTION_COPY);
	dd.handler_map = dynv_system_get_handler_map(gs->getColorList()->params);
	dd.userdata = args;
	dd.userdata2 = 0;
	dd.set_color_object_at = set_color_object_at_color_wheel;
	dd.test_at = test_at_color_wheel;
	dragdrop_widget_attach(args->color_wheel, DragDropFlags(DRAGDROP_DESTINATION), &dd);

	gint table_y;
	table = gtk_table_new(5, 2, false);
	gtk_box_pack_start(GTK_BOX(hbox2), table, true, true, 0);
	table_y = 0;

	gtk_table_attach(GTK_TABLE(table), gtk_label_aligned_new(_("Hue:"),0,0.5,0,0),0,1,table_y,table_y+1,GtkAttachOptions(GTK_FILL),GTK_FILL,5,5);
	args->hue = gtk_hscale_new_with_range(0, 360, 1);
	gtk_range_set_value(GTK_RANGE(args->hue), dynv_get_float_wd(args->params, "hue", 180));
	g_signal_connect (G_OBJECT (args->hue), "value-changed", G_CALLBACK (update), args);
	gtk_table_attach(GTK_TABLE(table), args->hue,1,2,table_y,table_y+1,GtkAttachOptions(GTK_FILL | GTK_EXPAND),GTK_FILL,5,0);
	table_y++;

	gtk_table_attach(GTK_TABLE(table), gtk_label_aligned_new(_("Saturation:"),0,0.5,0,0),0,1,table_y,table_y+1,GtkAttachOptions(GTK_FILL),GTK_FILL,5,5);
	args->saturation = gtk_hscale_new_with_range(0, 120, 1);
	gtk_range_set_value(GTK_RANGE(args->saturation), dynv_get_float_wd(args->params, "saturation", 100));
	g_signal_connect (G_OBJECT (args->saturation), "value-changed", G_CALLBACK (update), args);
	g_signal_connect (G_OBJECT (args->saturation), "format-value", G_CALLBACK (format_saturation_value_cb), args);
	gtk_table_attach(GTK_TABLE(table), args->saturation,1,2,table_y,table_y+1,GtkAttachOptions(GTK_FILL | GTK_EXPAND),GTK_FILL,5,0);
	table_y++;

	gtk_table_attach(GTK_TABLE(table), gtk_label_aligned_new(_("Lightness:"),0,0.5,0,0),0,1,table_y,table_y+1,GtkAttachOptions(GTK_FILL),GTK_FILL,5,5);
	args->lightness = gtk_hscale_new_with_range(-50, 80, 1);
	gtk_range_set_value(GTK_RANGE(args->lightness), dynv_get_float_wd(args->params, "lightness", 0));
	g_signal_connect (G_OBJECT (args->lightness), "value-changed", G_CALLBACK (update), args);
	g_signal_connect (G_OBJECT (args->lightness), "format-value", G_CALLBACK (format_lightness_value_cb), args);
	gtk_table_attach(GTK_TABLE(table), args->lightness,1,2,table_y,table_y+1,GtkAttachOptions(GTK_FILL | GTK_EXPAND),GTK_FILL,5,0);
	table_y++;

	//table_y=0;
	gtk_table_attach(GTK_TABLE(table), gtk_label_aligned_new(_("Type:"),0,0.5,0,0),0,1,table_y,table_y+1, GTK_FILL, GTK_SHRINK, 5, 5);
	args->gen_type = gtk_combo_box_text_new();
	for (size_t i = 0; i < generate_scheme_get_n_scheme_types(); i++){
		gtk_combo_box_text_append_text(GTK_COMBO_BOX_TEXT(args->gen_type), _(generate_scheme_get_scheme_type(i)->name));
	}
	gtk_combo_box_set_active(GTK_COMBO_BOX(args->gen_type), dynv_get_int32_wd(args->params, "type", 0));
	g_signal_connect (G_OBJECT (args->gen_type), "changed", G_CALLBACK(update), args);
	gtk_table_attach(GTK_TABLE(table), args->gen_type,1,2,table_y,table_y+1, GTK_FILL, GTK_SHRINK,5,0);
	table_y++;

	gtk_table_attach(GTK_TABLE(table), gtk_label_aligned_new(_("Color wheel:"),0,0.5,0,0),0,1,table_y,table_y+1, GTK_FILL, GTK_SHRINK, 5, 5);
	args->wheel_type = gtk_combo_box_text_new();

	for (size_t i = 0; i < color_wheel_types_get_n(); i++){
		gtk_combo_box_text_append_text(GTK_COMBO_BOX_TEXT(args->wheel_type), _(color_wheel_types_get()[i].name));
	}
	gtk_combo_box_set_active(GTK_COMBO_BOX(args->wheel_type), dynv_get_int32_wd(args->params, "wheel_type", 0));
	g_signal_connect (G_OBJECT (args->wheel_type), "changed", G_CALLBACK(update), args);
	gtk_table_attach(GTK_TABLE(table), args->wheel_type,1,2,table_y,table_y+1, GTK_FILL, GTK_SHRINK,5,0);

	table_y++;

	struct dynvHandlerMap* handler_map=dynv_system_get_handler_map(gs->getColorList()->params);
	ColorList* preview_color_list = color_list_new(handler_map);
	dynv_handler_map_release(handler_map);

	args->preview_color_list = preview_color_list;
	args->colors_visible = MAX_COLOR_WIDGETS;
	args->gs = gs;
	gtk_widget_show_all(hbox);
	update(0, args);
	args->main = hbox;
	args->source.widget = hbox;
	return (ColorSource*)args;
}

int generate_scheme_source_register(ColorSourceManager *csm)
{
	ColorSource *color_source = new ColorSource;
	color_source_init(color_source, "generate_scheme", _("Scheme generation"));
	color_source->implement = (ColorSource* (*)(ColorSource *source, GlobalState *gs, struct dynvSystem *dynv_namespace))source_implement;
	color_source->default_accelerator = GDK_KEY_g;
	color_source_manager_add_source(csm, color_source);
	return 0;
}

const SchemeType* generate_scheme_get_scheme_type(size_t index)
{
	if (index >= 0 && index < generate_scheme_get_n_scheme_types())
		return &scheme_types[index];
	else
		return 0;
}

size_t generate_scheme_get_n_scheme_types()
{
	return sizeof(scheme_types) / sizeof(SchemeType);
}