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/**
* @file
* @section AUTHORS
*
* Authors:
* Eamon Walsh <ewalsh@tycho.nsa.gov>
*
* @section LICENSE
*
* This file is in the public domain.
*
* @section DESCRIPTION
*
* This is the "subclass" of display that implements the server help screen
* (the default screen that has the instructions and allows pressing
* Esc to exit the server).
*/
#include <sys/types.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <arpa/inet.h>
#include "common.h"
#include "sys-queue.h"
#include "client.h"
#include "display.h"
static struct display sd;
static unsigned char *background;
static int
sclient_key(struct display *d, bool down, int keycode)
{
if (keycode == KEY_ESC)
kill(getpid(), SIGINT);
return 0;
}
static int
sclient_mouse(struct display *d, struct mouse_event *m)
{
return 0;
}
void
sclient_read_background_image(const char *filename, unsigned char *buf,
const int dw, const int dh)
{
uint32_t iw, ih, w, h, o;
unsigned i;
unsigned char bg, *ptr = buf;
int fd = open(filename, O_RDONLY);
if (fd < 0)
goto err;
if (read(fd, &iw, sizeof(iw)) != sizeof(iw))
goto err2;
if (read(fd, &ih, sizeof(ih)) != sizeof(ih))
goto err2;
if (read(fd, &bg, 1) != 1)
goto err2;
lseek(fd, -1, SEEK_CUR);
memset(buf, bg, dw * dh);
iw = ntohl(iw);
ih = ntohl(ih);
w = MIN(iw, dw);
h = MIN(ih, dh);
o = (dw - w) / 2;
for (i = 0; i < h; i++) {
read(fd, ptr + o, w);
ptr += dw;
lseek(fd, iw - w, SEEK_CUR);
}
close(fd);
return;
err2:
close(fd);
err:
memset(buf, 0, dw * dh);
}
int
sclient_setup(void)
{
DFBSurfaceDescription sdesc;
struct buffer *b;
int width = display_get_width();
int height = display_get_height();
background = malloc(width * height);
if (!background)
return -1;
sclient_read_background_image(SERVER_BG_FILE, background, width, height);
/* Set up preallocated DirectFB surface with the data */
memset(&sdesc, 0, sizeof(sdesc));
sdesc.flags = DSDESC_WIDTH | DSDESC_HEIGHT | DSDESC_CAPS | DSDESC_PIXELFORMAT | DSDESC_PREALLOCATED;
sdesc.width = width;
sdesc.height = height;
sdesc.pixelformat = DSPF_RGB332;
sdesc.preallocated[0].data = background;
sdesc.preallocated[0].pitch = width;
b = buffer_new(sd.client, &sdesc, BUFFER_FLAG_SERVER_BG);
if (b == NULL) {
free(background);
return -1;
}
return 0;
}
struct display *
sclient_new(void)
{
struct client *c = client_add(-1, 1024, 1024);
if (!c)
return NULL;
/* XXX Label the client */
c->label.label = strdup("LINPICKER SERVER");
c->label.shortlabel = strdup("S");
c->label.fg = (struct sec_color){ 0xff, 0xff, 0 };
c->label.bg = (struct sec_color){ 0xff, 0, 0 };
/* Set up input methods */
sd.send_key = sclient_key;
sd.send_mouse = sclient_mouse;
sd.type = DISPLAY_SERVER;
sd.client = c;
LIST_INIT(&sd.buffers);
TAILQ_INIT(&sd.views);
return &sd;
}
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