/*
 *
 *  	wmMatrix-0.2 (C) 1999 Mike Henderson (mghenderson@lanl.gov)
 *
 *  		- A DockApp version of Jamie Zawinski's xmatrix screensaver hack.
 *
 *
 *
 *
 *
 * 	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 2, 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 (see the file COPYING); if not, write to the
 * 	Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 *      Boston, MA 02110-1301 USA
 *
 *
 *      Changes:
 *
 *	Version 0.2  -	released Aug 16, 1999.
 *
 *
 *      ToDo:
 *		Tie speed to cpu load or some such thing. (Idea from Ken Steen.) Still need to work
 *		on how best to accomplish this....
 *
 *
 *
 *
 */

/*
 *   Includes
 */
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <X11/X.h>
#include <X11/xpm.h>
#include "xutils.h"
#include "wmMatrix_master.xpm"
#include "wmMatrix_mask.xbm"
#include "matrix.h"

/*
 *  Delay between refreshes (in microseconds)
 */
#define DELAY 20000UL			/* 0.020000 sec */
#define WMMATRIX_VERSION "0.2"

void ParseCMDLine(int argc, char *argv[]);
void ButtonPressEvent(XButtonEvent *);
void print_usage();
m_state *init_matrix(Display *, Window);
void draw_matrix(m_state *, int);

int GotFirstClick1, GotDoubleClick1;
int GotFirstClick2, GotDoubleClick2;
int GotFirstClick3, GotDoubleClick3;
int DblClkDelay;
/*int		 HasExecute;*/
/*char*    	 ExecuteCommand = "xmatrixsmall";*/
char *progname = "wmMatrix";
char *progclass = "WMMatrix";
int PixmapSize;
char *DoubleClickCmd = NULL;
char *RDoubleClickCmd = NULL;
char *TimeColor = "#ffff00";
char *BackgroundColor = "#181818";

/*
 *   main
 */
int main(int argc, char *argv[])
{
	XEvent event;
	m_state *state;

	/*
	 *  Parse any command line arguments.
	 */
	ParseCMDLine(argc, argv);
	if (DoubleClickCmd == NULL)
		DoubleClickCmd = strdup("xscreensaver-demo");
	if (RDoubleClickCmd == NULL)
		RDoubleClickCmd = strdup("xscreensaver-command -activate");
	initXwindow(argc, argv);
	openXwindow(argc, argv, wmMatrix_master, wmMatrix_mask_bits, wmMatrix_mask_width, wmMatrix_mask_height);
	state = init_matrix(display, iconwin);

	/*
	 *  Loop until we die
	 */
	while (1) {
		draw_matrix(state, 40);

		/*
		 *  Double Click Delays
		 *  Keep track of click events. If Delay too long, set GotFirstClick's to False.
		 */
		/* 25 * 0.02 = .5 sec */
		if (DblClkDelay > 25) {
			DblClkDelay = 0;
			GotFirstClick1 = 0;
			GotDoubleClick1 = 0;
			GotFirstClick2 = 0;
			GotDoubleClick2 = 0;
			GotFirstClick3 = 0;
			GotDoubleClick3 = 0;
		} else {
			++DblClkDelay;
		}

		/*
		 *   Process any pending X events.
		 */
		while (XPending(display)) {
			XNextEvent(display, &event);
			switch (event.type) {
			case Expose:
				RedrawWindow();
				break;
			case ButtonPress:
				ButtonPressEvent(&event.xbutton);
				break;
			case ButtonRelease:
				break;
			}
		}

		/*
		 *  sleep till next update. I cant seem to get usleep or select to work properly
		 *  with args smaller than 10000. A kernel tick problem? If I comment out the next line,
		 *  the app screams (chews up cpu too). Or if I use DELAY of 0 it also screams.
		 *  But a delay of 1 or higher is slow.....
		 *
		 */
		short_uusleep(DELAY);
	}
}

/*
 *   ParseCMDLine()
 */
void ParseCMDLine(int argc, char *argv[])
{
	int i;
	PixmapSize = 2;
	for (i = 1; i < argc; i++) {
		if (!strcmp(argv[i], "-display")) {
			++i;
		} else if (!strcmp(argv[i], "-c")) {
			if ((i + 1 >= argc) || (argv[i + 1][0] == '-')) {
				fprintf(stderr, "wmMatrix: No command given\n");
				print_usage();
				exit(-1);
			}
			if (DoubleClickCmd != NULL)
				free(DoubleClickCmd);
			DoubleClickCmd = strdup(argv[++i]);
		} else if (!strcmp(argv[i], "-cr")) {
			if ((i + 1 >= argc) || (argv[i + 1][0] == '-')) {
				fprintf(stderr, "wmMatrix: No command given\n");
				print_usage();
				exit(-1);
			}
			if (RDoubleClickCmd != NULL)
				free(RDoubleClickCmd);
			RDoubleClickCmd = strdup(argv[++i]);
		} else if (!strcmp(argv[i], "-sml")) {
			PixmapSize = 1;
		} else if (!strcmp(argv[i], "-med")) {
			PixmapSize = 2;
		} else if (!strcmp(argv[i], "-lrg")) {
			PixmapSize = 3;
		} else {
			print_usage();
			exit(1);
		}
	}
}

void print_usage()
{
	printf("\nwmMatrix version: %s\n", WMMATRIX_VERSION);
	printf("\t-h\t\tDisplay help screen.\n");
	printf("\t-c cmd\t\tCommand executed on doubleclick.\n");
	printf("\t-cr cmd\t\tCommand executed on right doubleclick\n");
	printf("\t-sml\t\tUse small size pixmap.\n");
	printf("\t-med\t\tUse medium size pixmap.\n");
	printf("\t-lrg\t\tUse large size pixmap.\n");
}

/*
 *  This routine handles button presses.
 *
 *   Double click on
 *              Mouse Button 1: Execute the command defined in the -c command-line option.
 *              Mouse Button 2: No action assigned.
 *              Mouse Button 3: Execute the command defined in the -cr command-line option.
 *
 *
 */
void ButtonPressEvent(XButtonEvent * xev)
{
	DblClkDelay = 0;
	if ((xev->button == Button1) && (xev->type == ButtonPress)) {
		if (GotFirstClick1)
			GotDoubleClick1 = 1;
		else
			GotFirstClick1 = 1;
	} else if ((xev->button == Button2) && (xev->type == ButtonPress)) {
		if (GotFirstClick2)
			GotDoubleClick2 = 1;
		else
			GotFirstClick2 = 1;
	} else if ((xev->button == Button3) && (xev->type == ButtonPress)) {
		if (GotFirstClick3)
			GotDoubleClick3 = 1;
		else
			GotFirstClick3 = 1;
	}

	/*
	 *  We got a double click on Mouse Button1 (i.e. the left one)
	 */
	if (GotDoubleClick1) {
		GotFirstClick1 = 0;
		GotDoubleClick1 = 0;
		system(DoubleClickCmd);
	}

	/*
	 *  We got a double click on Mouse Button2 (i.e. the middle one)
	 */
	if (GotDoubleClick2) {
		GotFirstClick2 = 0;
		GotDoubleClick2 = 0;
	}

	/*
	 *  We got a double click on Mouse Button3 (i.e. the right one)
	 */
	if (GotDoubleClick3) {
		GotFirstClick3 = 0;
		GotDoubleClick3 = 0;
		system(RDoubleClickCmd);
	}
	return;
}