nanowm.c

开放源码实时操作系统源码.

/*
 * NanoWM - Window Manager for Nano-X
 *
 * Copyright (C) 2000 Greg Haerr <[e-mail]>
 * Copyright (C) 2000 Alex Holden <[e-mail]>
 * Parts based on npanel.c Copyright (C) 1999 Alistair Riddoch.
 */
#include <stdio.h>
#include <stdlib.h>
#define MWINCLUDECOLORS
#include "nano-X.h"
/* Uncomment this if you want debugging output from this file */
/*#define DEBUG*/

#include "nanowm.h"

GR_SCREEN_INFO si;

#ifdef __ECOS
int nanowm_main(int argc, char *argv[])
#else
int main(int argc, char *argv[])
#endif
{
	GR_EVENT event;
	GR_WM_PROPERTIES props;
	win window;

	if(GrOpen() < 0) {
		fprintf(stderr, "Couldn't connect to Nano-X server!\n");
		exit(1);
	}

	/* pass errors through main loop, don't exit*/
	GrSetErrorHandler(NULL);

	GrGetScreenInfo(&si);

	/* add root window*/
	window.wid = GR_ROOT_WINDOW_ID;
	window.pid = GR_ROOT_WINDOW_ID;
	window.type = WINDOW_TYPE_ROOT;
	window.clientid = 1;
	window.sizing = GR_FALSE;
	window.active = 0;
	window.data = NULL;
	add_window(&window);

	GrSelectEvents(GR_ROOT_WINDOW_ID, GR_EVENT_MASK_CHLD_UPDATE);

	/* Set new root window background color*/
	props.flags = GR_WM_FLAGS_BACKGROUND;
	props.background = GrGetSysColor(GR_COLOR_DESKTOP);
	GrSetWMProperties(GR_ROOT_WINDOW_ID, &props);

	while(1) { 
		GrGetNextEvent(&event);

		switch(event.type) {
			case GR_EVENT_TYPE_ERROR:
				printf("nanowm: error %d\n", event.error.code);
				break;
			case GR_EVENT_TYPE_EXPOSURE:
				do_exposure(&event.exposure);
				break;
			case GR_EVENT_TYPE_BUTTON_DOWN:
				do_button_down(&event.button);
				break;
			case GR_EVENT_TYPE_BUTTON_UP:
				do_button_up(&event.button);
				break;
			case GR_EVENT_TYPE_MOUSE_ENTER:
				do_mouse_enter(&event.general);
				break;
			case GR_EVENT_TYPE_MOUSE_EXIT:
				do_mouse_exit(&event.general);
				break;
			case GR_EVENT_TYPE_MOUSE_POSITION:
				do_mouse_moved(&event.mouse);
				break;
			case GR_EVENT_TYPE_KEY_DOWN:
				do_key_down(&event.keystroke);
				break;
			case GR_EVENT_TYPE_KEY_UP:
				do_key_up(&event.keystroke);
				break;
			case GR_EVENT_TYPE_FOCUS_IN:
				do_focus_in(&event.general);
				break;
			case GR_EVENT_TYPE_CHLD_UPDATE:
				do_update(&event.update);
				break;
			default:
				fprintf(stderr, "Got unexpected event %d\n",
								event.type);
				break;
		}
	}

	GrClose();
}