/*
 * ----------------------------------------------------------------------------
 * "THE BEER-WARE LICENSE" (Revision 42):
 * <fredde at shapeshifter dot se> wrote this file. As long as you retain this
 * notice you can do whatever you want with this stuff. If we meet some day,
 * and you think this stuff is worth it, you can buy me a beer in return.
 * Fredrik Lindberg
 * ----------------------------------------------------------------------------
 */

#include <stdio.h>
#include <string.h>

#include <X11/Xlib.h>
#include <X11/Xutil.h>

#include "xwlans.h"

int
init_win(struct xw_t *xw)
{
	XGCValues gvc;

	if ((xw->disp = XOpenDisplay(xw->display)) == 0)
	{
		fprintf(stderr, "Could not open display %s\n", xw->display);
		return 1;
	}
	xw->screen = DefaultScreen(xw->disp);
	xw->win = RootWindow(xw->disp, xw->screen);

	gvc.graphics_exposures = True;
	xw->winGC = XCreateGC(xw->disp, xw->win, GCBackground, &gvc);
	XMapWindow(xw->disp, xw->win);

	XSelectInput(xw->disp, xw->win, ExposureMask|FocusChangeMask);
	
	return 0;
} 

void
close_win(struct xw_t *xw)
{

	XSync(xw->disp, False);
	clear_win(xw);
	XSync(xw->disp, False);
	XCloseDisplay(xw->disp);
}

XColor
get_color(struct xw_t *xw, char *color)
{
	XColor c;
	XWindowAttributes atrb;

	XGetWindowAttributes(xw->disp, xw->win, &atrb);
	XParseColor(xw->disp, atrb.colormap, color, &c);
	XAllocColor(xw->disp, atrb.colormap, &c);	
	return c;
}

void
redraw(struct xw_t *xw, int value, int max)
{
	int bar_len = value * ((xw->width * 0.70) / xw->bmax);
	int mbar = (int)(xw->width * 0.70);
	int bheight = (int)(xw->height - 7); 
	char buffer[16];

	sprintf(buffer, "%d/%d dBm", value, max);

	if (xw->opt_shadow == 1)
	{
		XSetForeground(xw->disp, xw->winGC, xw->c_shadow.pixel);
		XFillRectangle(xw->disp, xw->win, xw->winGC, xw->x + SHW_OFFSET, xw->y + SHW_OFFSET, bar_len, bheight);

		XDrawLine(xw->disp, xw->win, xw->winGC, xw->x + SHW_OFFSET, xw->y + bheight + 2 + SHW_OFFSET, 
			xw->x + SHW_OFFSET, xw->y + bheight + 5 + SHW_OFFSET);
		XDrawLine(xw->disp, xw->win, xw->winGC, xw->x + (mbar/2) + SHW_OFFSET, xw->y + bheight + 2 + SHW_OFFSET, 
			xw->x + (mbar/2) + SHW_OFFSET, xw->y + bheight + 5 + SHW_OFFSET);
		XDrawLine(xw->disp, xw->win, xw->winGC, xw->x + (mbar) + SHW_OFFSET, xw->y + bheight + 2 + SHW_OFFSET, 
			xw->x + (mbar) + SHW_OFFSET, xw->y + bheight + 5 + SHW_OFFSET);

		XSetForeground(xw->disp, xw->winGC, xw->c_shadow.pixel);
		XDrawString(xw->disp, xw->win, xw->winGC, xw->x + (xw->width * 0.70) + 3 + SHW_OFFSET, 
			xw->y + bheight + SHW_OFFSET, buffer, strlen(buffer));
	}

	XSetForeground(xw->disp, xw->winGC, xw->c_bar.pixel);
	XFillRectangle(xw->disp, xw->win, xw->winGC, xw->x, xw->y, bar_len, bheight);

	XDrawLine(xw->disp, xw->win, xw->winGC, xw->x, xw->y + bheight + 2, xw->x, xw->y + bheight + 5);
	XDrawLine(xw->disp, xw->win, xw->winGC, xw->x + (mbar/2), xw->y + bheight + 2, xw->x + (mbar/2), xw->y + bheight + 5);
	XDrawLine(xw->disp, xw->win, xw->winGC, xw->x + (mbar), xw->y + bheight + 2, xw->x + (mbar), xw->y + bheight + 5);
	
	XSetForeground(xw->disp, xw->winGC, xw->c_text.pixel);
	XDrawString(xw->disp, xw->win, xw->winGC, xw->x + (xw->width * 0.70) + 3, xw->y + bheight, buffer, strlen(buffer));

}

void
clear_win(struct xw_t *xw)
{

	XClearArea(xw->disp, xw->win, xw->x, xw->y, xw->width, xw->height, False);
}