/*
compile with
rgb-db-browse: rgb-db-browse.c
        gcc -Wall -g3 -O2 -march=i686 `pkg-config gtk+-2.0 --cflags --libs` $< -o $@

	
   
   This one shows the content of X rgb data base.
	"/usr/X11R6/lib/X11/rgb.txt" location expected.
	Some bugs can be found.

	

	Olexiy Avramchenko
*/

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <gtk/gtk.h>
#include <gdk/gdkx.h>


enum
{
	COLUMN_COLOR_INDEX,	/* index of the color in the data base */

	COLUMN_COLOR_NAME,	/* name of the color from data base */
	COLUMN_COLOR_VALUE,	/* value (r:g:b) of the color */
	COLUMN_COLOR_BG,	/* invisible column, holding the bg color of COLUMN_COLOR_VALUE */
	COLUMN_COLOR_FG,	/* invisible column, holding the fg color of COLUMN_COLOR_VALUE */

	COLUMNS_NUMBER
};


static GtkWidget *setup_3()
{
int			index=0;
char			s[1024], value[64], *color_name;
FILE			*f;
XColor			xcolor;
GdkColor		colors[2];
	
gboolean		success[2];
GtkWidget		*tv;
GtkTreeIter		iter;
GtkListStore		*model;
GtkCellRenderer		*renderer;
GtkTreeViewColumn	*column;


	model = gtk_list_store_new(
					COLUMNS_NUMBER,
					G_TYPE_INT,
					G_TYPE_STRING,
					G_TYPE_STRING,
					GDK_TYPE_COLOR,
					GDK_TYPE_COLOR
	);

	f = fopen("/usr/X11R6/lib/X11/rgb.txt", "r");
	if (!f) {
		fprintf(stderr, "ERROR: can't open rgb db.\n");
		exit(-1);
	}

	while(fgets(s, sizeof(s), f)) {
		if (!*s || *s=='!')
			continue;
		s[strlen(s)-1] = 0; /* strip '\n' away */
		color_name = strrchr(s, '\t');
		if (!color_name)
			continue;
		gtk_list_store_append(model, &iter);
		gtk_list_store_set(
					model,
					&iter,
					-1
		);
		XParseColor(
				GDK_DISPLAY(),
				GDK_COLORMAP_XCOLORMAP(gdk_colormap_get_system()),
				color_name+1,
				&xcolor
		);
		colors[0].red = xcolor.red;
		colors[0].green = xcolor.green;
		colors[0].blue = xcolor.blue;
		if (colors[0].red>0xa000 || colors[0].green>0xa000 || colors[0].blue>0xa000)
			colors[1].red=colors[1].green=colors[1].blue = 0;
		else	colors[1].red=colors[1].green=colors[1].blue = 0xffff;
		gdk_colormap_alloc_colors(
						gdk_colormap_get_system(),
						colors,
						2,
						FALSE,
						FALSE,
						success
		);
		sprintf(value, "%04x:%04x:%04x", colors[0].red,colors[0].green,colors[0].blue);
		gtk_list_store_set(
					model,
					&iter,
					COLUMN_COLOR_INDEX, index++,
					COLUMN_COLOR_NAME, color_name+1,
					COLUMN_COLOR_VALUE, value,
					COLUMN_COLOR_BG, &colors[0],
					COLUMN_COLOR_FG, &colors[1],
					-1
		);
	}

	fclose(f);

	tv = gtk_tree_view_new_with_model((GtkTreeModel*)model);
	g_object_unref(model);

	renderer = gtk_cell_renderer_text_new();
	gtk_tree_view_insert_column_with_attributes(
							GTK_TREE_VIEW(tv),
							-1,
							"N",
							renderer,
							"text",
							COLUMN_COLOR_INDEX,
							NULL
	);
	column = gtk_tree_view_get_column(GTK_TREE_VIEW(tv), COLUMN_COLOR_INDEX);
	gtk_tree_view_column_set_sort_column_id(column, COLUMN_COLOR_INDEX);
	gtk_tree_view_column_set_resizable(column, TRUE);

	renderer = gtk_cell_renderer_text_new();
	gtk_tree_view_insert_column_with_attributes(
							GTK_TREE_VIEW(tv),
							-1,
							"name",
							renderer,
							"text",
							COLUMN_COLOR_NAME,
							NULL
	);
	column = gtk_tree_view_get_column(GTK_TREE_VIEW(tv), COLUMN_COLOR_NAME);
	gtk_tree_view_column_set_sort_column_id(column, COLUMN_COLOR_NAME);
	gtk_tree_view_column_set_resizable(column, TRUE);

	renderer = gtk_cell_renderer_text_new();
	gtk_tree_view_insert_column_with_attributes(
							GTK_TREE_VIEW(tv),
							-1,
							"value",
							renderer,
							"text", COLUMN_COLOR_VALUE,
	/* telling the renderer how to get the fg color */
							"foreground-gdk", COLUMN_COLOR_FG,
	/* telling the renderer how to get the bg color */
							"background-gdk", COLUMN_COLOR_BG,
							NULL
	);
	column = gtk_tree_view_get_column(GTK_TREE_VIEW(tv), COLUMN_COLOR_NAME);
	gtk_tree_view_column_set_resizable(column, TRUE);

	return tv;
}


int main(int argc, char **argv)
{
GtkWidget *window;
GtkWidget *vbox;
GtkWidget *button;
GtkWidget *sw;
GtkWidget *treeview;

	gtk_init(&argc, &argv);

	window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
	gtk_container_set_border_width(GTK_CONTAINER(window), 4);
	gtk_window_set_default_size(GTK_WINDOW(window), 320,480);
	gtk_window_set_title(GTK_WINDOW(window), "rgb data base content");
	g_signal_connect(G_OBJECT(window), "delete_event", G_CALLBACK(gtk_main_quit), NULL);

	vbox = gtk_vbox_new(FALSE, 2);
	gtk_container_add(GTK_CONTAINER(window), vbox);

	sw = gtk_scrolled_window_new(NULL, NULL);
	gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(sw), GTK_SHADOW_ETCHED_IN);
	gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(sw), GTK_POLICY_AUTOMATIC,GTK_POLICY_AUTOMATIC);
	gtk_box_pack_start(GTK_BOX(vbox), sw, TRUE,TRUE, 0);

	treeview = setup_3();
	gtk_tree_view_set_rules_hint(GTK_TREE_VIEW(treeview), FALSE);
	gtk_tree_selection_set_mode(
					gtk_tree_view_get_selection((GtkTreeView*)treeview),
					GTK_SELECTION_MULTIPLE
	);

	gtk_container_add(GTK_CONTAINER(sw), treeview);

	button = gtk_button_new_from_stock(GTK_STOCK_QUIT);
	gtk_box_pack_start(GTK_BOX(vbox), button, FALSE,FALSE, 0);
	g_signal_connect(G_OBJECT(button), "clicked", G_CALLBACK(gtk_main_quit), NULL);

	gtk_widget_show_all(window);

	gtk_main();
	return 0;
}