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x11.c
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/*
* x11.c
* kirk johnson
* july 1993
*
* Copyright (C) 1989, 1990, 1993-1995, 1999 Kirk Lauritz Johnson
*
* Parts of the source code (as marked) are:
* Copyright (C) 1989, 1990, 1991 by Jim Frost
* Copyright (C) 1992 by Jamie Zawinski <[email protected]>
*
* Permission to use, copy, modify and freely distribute xearth for
* non-commercial and not-for-profit purposes is hereby granted
* without fee, provided that both the above copyright notice and this
* permission notice appear in all copies and in supporting
* documentation.
*
* The author makes no representations about the suitability of this
* software for any purpose. It is provided "as is" without express or
* implied warranty.
*
* THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, INDIRECT
* OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include "xearth.h"
#include <X11/Xlib.h>
#include <X11/Intrinsic.h>
#include <X11/Xatom.h>
#include <X11/Xproto.h>
#include <signal.h>
#include "earthquake.h"
#define RETAIN_PROP_NAME "_XSETROOT_ID"
#define MONO_1 (0)
#define MONO_8 (1)
#define COLOR_8 (2)
#define MONO_16 (3)
#define COLOR_16 (4)
#define MONO_32 (5)
#define COLOR_32 (6)
#define LABEL_LEFT_FLUSH (1<<0)
#define LABEL_TOP_FLUSH (1<<1)
static void init_x_general _P ((int, char *[]));
static void process_opts _P ((void));
static void init_x_colors _P ((void));
static void init_x_pixmaps _P ((void));
static void init_x_root_window _P ((void));
static void init_x_separate_window _P ((void));
static void wakeup _P ((int));
static int get_bits_per_pixel _P ((int));
static XFontStruct *load_x_font _P ((Display *, char *));
static void get_proj_type _P ((void));
static void get_viewing_position _P ((void));
static void get_sun_position _P ((void));
static void get_rotation _P ((void));
static void get_size _P ((void));
static void get_shift _P ((void));
static void get_labelpos _P ((void));
static void get_geometry _P ((void));
static void get_ncolors _P ((void));
static void x11_setup _P ((void));
static void pack_mono_1 _P ((u16or32 *, u_char *));
static void pack_8 _P ((u16or32 *, Pixel *, u_char *));
static void pack_16 _P ((u16or32 *, Pixel *, u_char *));
static void pack_24 _P ((u_char *, u_char *));
static void pack_32 _P ((u_char *, u_char *));
static int x11_row _P ((u_char *));
static void x11_cleanup _P ((void));
static void draw_label _P ((Display *));
static void mark_location _P ((Display *, MarkerInfo *));
static void draw_outlined_string _P ((Display *, Pixmap, Pixel, Pixel,
int, int, char *, int));
static Window GetVRoot _P ((Display *));
static void updateProperty _P ((Display *, Window, const char *, Atom,
int, int, int));
static void preserveResource _P ((Display *, Window));
static void freePrevious _P ((Display *, Window));
static int xkill_handler _P ((Display *, XErrorEvent *));
static void draw_earthquake_location (Display *dpy, earthquake_list_t *list);
static void draw_earthquake_mark (Display *dpy, int radius, int x, int y,
Pixel fill_color);
static void draw_earthquake_legend (Display *dpy, int y);
static int bpp;
static u16or32 *dith;
static u_char *xbuf;
static int idx;
static XImage *xim;
static Pixmap work_pix;
static Pixmap disp_pix;
static int (*orig_error_handler) _P ((Display *, XErrorEvent *));
#ifdef DEBUG
static int frame = 0;
#endif /* DEBUG */
char *progclass;
Widget app_shell;
XtAppContext app_context;
XrmDatabase db;
Display *dsply; /* display connection */
int scrn; /* screen number */
Window root; /* root window */
Window xearth_window; /* xearth window */
Colormap cmap; /* default colormap */
Visual *visl; /* default visual */
int dpth; /* default depth */
Pixel white; /* white pixel */
Pixel black; /* black pixel */
Pixel hlight; /* highlight pixel */
GC gc; /* graphics context */
Pixel *pels; /* allocated colors */
char *font_name; /* text font name */
XFontStruct *font; /* basic text font */
static int do_once; /* only render once? */
static int mono; /* render in mono? */
static int use_root; /* render into root? */
static int window_pos_flag; /* spec'ed window pos? */
static int window_xvalue; /* window x position */
static int window_yvalue; /* window y position */
static int window_gravity; /* window gravity */
static int label_xvalue; /* label x position */
static int label_yvalue; /* label y position */
static int label_orient; /* label orientation */
static Pixel get_color (Display *dpy, char *color_name);
/* earthquake color */
static char *past_time_color_name[NUM_PAST_TIME_CLASS];
static Pixel past_time_color[NUM_PAST_TIME_CLASS];
static int radius_unit;
static char *defaults[] = {
"*proj: orthographic",
"*pos: sunrel 0 0",
"*rot: 0",
"*shift: 0 0",
"*mag: 1.0",
"*shade: on",
"*label: off",
"*labelpos: -5-5",
"*markers: on",
"*markerfile: built-in",
"*wait: 300",
"*timewarp: 1",
"*day: 100",
"*night: 5",
"*term: 1",
"*twopix: on",
"*ncolors: 64",
"*fork: off",
"*once: off",
"*nice: 0",
"*stars: on",
"*starfreq: 0.002",
"*bigstars: 0",
"*grid: off",
"*grid1: 6",
"*grid2: 15",
"*overlayfile: none",
"*earthquake_info: off",
"*past_time_class1_color: red",
"*past_time_class2_color: gold",
"*past_time_class3_color: darkgoldenrod",
"*past_time_class4_color: darkslategray",
"*past_time_class5_color: dimgrey",
"*gamma: 1.0",
"*font: variable",
"*title: xearth",
"*iconname: xearth",
NULL
};
static XrmOptionDescRec options[] = {
{"-proj", ".proj", XrmoptionSepArg, 0},
{"-pos", ".pos", XrmoptionSepArg, 0},
{"-rot", ".rot", XrmoptionSepArg, 0},
{"-mag", ".mag", XrmoptionSepArg, 0},
{"-shade", ".shade", XrmoptionNoArg, "on"},
{"-noshade", ".shade", XrmoptionNoArg, "off"},
{"-sunpos", ".sunpos", XrmoptionSepArg, 0},
{"-size", ".size", XrmoptionSepArg, 0},
{"-shift", ".shift", XrmoptionSepArg, 0},
{"-label", ".label", XrmoptionNoArg, "on"},
{"-nolabel", ".label", XrmoptionNoArg, "off"},
{"-labelpos", ".labelpos", XrmoptionSepArg, 0},
{"-markers", ".markers", XrmoptionNoArg, "on"},
{"-nomarkers", ".markers", XrmoptionNoArg, "off"},
{"-markerfile", ".markerfile", XrmoptionSepArg, 0},
{"-showmarkers", ".showmarkers", XrmoptionNoArg, "on"},
{"-overlayfile", ".overlayfile", XrmoptionSepArg, 0},
{"-earthquake_info", ".earthquake_info", XrmoptionNoArg, "on"},
{"-noearthquake_info", ".earthquake_info", XrmoptionNoArg, "off"},
{"-wait", ".wait", XrmoptionSepArg, 0},
{"-timewarp", ".timewarp", XrmoptionSepArg, 0},
{"-day", ".day", XrmoptionSepArg, 0},
{"-night", ".night", XrmoptionSepArg, 0},
{"-term", ".term", XrmoptionSepArg, 0},
{"-onepix", ".twopix", XrmoptionNoArg, "off"},
{"-twopix", ".twopix", XrmoptionNoArg, "on"},
{"-ncolors", ".ncolors", XrmoptionSepArg, 0},
{"-fork", ".fork", XrmoptionNoArg, "on"},
{"-nofork", ".fork", XrmoptionNoArg, "off"},
{"-once", ".once", XrmoptionNoArg, "on"},
{"-noonce", ".once", XrmoptionNoArg, "off"},
{"-nice", ".nice", XrmoptionSepArg, 0},
{"-version", ".version", XrmoptionNoArg, "on"},
{"-stars", ".stars", XrmoptionNoArg, "on"},
{"-nostars", ".stars", XrmoptionNoArg, "off"},
{"-starfreq", ".starfreq", XrmoptionSepArg, 0},
{"-bigstars", ".bigstars", XrmoptionSepArg, 0},
{"-grid", ".grid", XrmoptionNoArg, "on"},
{"-nogrid", ".grid", XrmoptionNoArg, "off"},
{"-grid1", ".grid1", XrmoptionSepArg, 0},
{"-grid2", ".grid2", XrmoptionSepArg, 0},
{"-time", ".time", XrmoptionSepArg, 0},
{"-gamma", ".gamma", XrmoptionSepArg, 0},
{"-font", ".font", XrmoptionSepArg, 0},
{"-mono", ".mono", XrmoptionNoArg, "on"},
{"-nomono", ".mono", XrmoptionNoArg, "off"},
{"-root", ".root", XrmoptionNoArg, "on"},
{"-noroot", ".root", XrmoptionNoArg, "off"},
{"-geometry", ".geometry", XrmoptionSepArg, 0},
{"-title", ".title", XrmoptionSepArg, 0},
{"-iconname", ".iconname", XrmoptionSepArg, 0},
};
void
command_line_x (argc, argv)
int argc;
char *argv[];
{
init_x_general (argc, argv);
process_opts ();
init_x_colors ();
init_x_pixmaps ();
font = load_x_font (dsply, font_name);
if (use_root)
init_x_root_window ();
else
init_x_separate_window ();
}
static void
init_x_general (argc, argv)
int argc;
char *argv[];
{
progname = argv[0];
progclass = "XEarth";
app_shell = XtAppInitialize (&app_context, progclass,
options, XtNumber (options),
&argc, argv, defaults, 0, 0);
if (argc > 1)
usage (NULL);
dsply = XtDisplay (app_shell);
scrn = DefaultScreen (dsply);
db = XtDatabase (dsply);
XtGetApplicationNameAndClass (dsply, &progname, &progclass);
root = RootWindow (dsply, scrn);
cmap = DefaultColormap (dsply, scrn);
visl = DefaultVisual (dsply, scrn);
dpth = DefaultDepth (dsply, scrn);
wdth = DisplayWidth (dsply, scrn);
hght = DisplayHeight (dsply, scrn);
white = WhitePixel (dsply, scrn);
black = BlackPixel (dsply, scrn);
gc = XCreateGC (dsply, root, 0, NULL);
hlight = white;
XSetState (dsply, gc, white, black, GXcopy, AllPlanes);
bpp = get_bits_per_pixel (dpth);
}
static void
process_opts ()
{
if (get_boolean_resource ("version", "Version"))
version_info (1);
if (get_boolean_resource ("showmarkers", "Showmarkers")) {
markerfile = get_string_resource ("markerfile", "Markerfile");
show_marker_info (markerfile);
}
/* process complex resources
*/
get_proj_type ();
get_viewing_position ();
get_sun_position ();
get_size ();
get_shift ();
get_labelpos ();
get_rotation ();
get_geometry ();
get_ncolors ();
/* process simple resources
*/
view_mag = get_float_resource ("mag", "Mag");
do_shade = get_boolean_resource ("shade", "Shade");
do_label = get_boolean_resource ("label", "Label");
do_markers = get_boolean_resource ("markers", "Markers");
markerfile = get_string_resource ("markerfile", "Markerfile");
wait_time = get_integer_resource ("wait", "Wait");
time_warp = get_float_resource ("timewarp", "Timewarp");
day = get_integer_resource ("day", "Day");
night = get_integer_resource ("night", "Night");
terminator = get_integer_resource ("term", "Term");
use_two_pixmaps = get_boolean_resource ("twopix", "Twopix");
do_fork = get_boolean_resource ("fork", "Fork");
do_once = get_boolean_resource ("once", "Once");
priority = get_integer_resource ("nice", "Nice");
do_stars = get_boolean_resource ("stars", "Stars");
star_freq = get_float_resource ("starfreq", "Starfreq");
big_stars = get_integer_resource ("bigstars", "Bigstars");
do_grid = get_boolean_resource ("grid", "Grid");
grid_big = get_integer_resource ("grid1", "Grid1");
grid_small = get_integer_resource ("grid2", "Grid2");
fixed_time = get_integer_resource ("time", "Time");
xgamma = get_float_resource ("gamma", "Gamma");
font_name = get_string_resource ("font", "Font");
mono = get_boolean_resource ("mono", "Mono");
overlayfile = get_string_resource ("overlayfile", "Overlayfile");
earthquake_info = get_boolean_resource ("earthquake_info", "Quake_info");
past_time_color_name[past_time_class1] =
get_string_resource ("past_time_class1_color",
"Past_time_class1_color");
past_time_color_name[past_time_class2] =
get_string_resource ("past_time_class2_color",
"Past_time_class2_color");
past_time_color_name[past_time_class3] =
get_string_resource ("past_time_class3_color",
"Past_time_class3_color");
past_time_color_name[past_time_class4] =
get_string_resource ("past_time_class4_color",
"Past_time_class4_color");
past_time_color_name[past_time_class5] =
get_string_resource ("past_time_class5_color",
"Past_time_class5_color");
/* various sanity checks on simple resources
*/
if ((view_rot < -180) || (view_rot > 360))
fatal ("viewing rotation must be between -180 and 360");
if (view_mag <= 0)
fatal ("viewing magnification must be positive");
if (wait_time < 0)
fatal ("arg to -wait must be non-negative");
if (time_warp <= 0)
fatal ("arg to -timewarp must be positive");
if ((star_freq < 0) || (star_freq > 1))
fatal ("arg to -starfreq must be between 0 and 1");
if ((big_stars < 0) || (big_stars > 100))
fatal ("arg to -bigstars must be between 0 and 100");
if (grid_big <= 0)
fatal ("arg to -grid1 must be positive");
if (grid_small <= 0)
fatal ("arg to -grid2 must be positive");
if ((day > 100) || (day < 0))
fatal ("arg to -day must be between 0 and 100");
if ((night > 100) || (night < 0))
fatal ("arg to -night must be between 0 and 100");
if ((terminator > 100) || (terminator < 0))
fatal ("arg to -term must be between 0 and 100");
if (xgamma <= 0)
fatal ("arg to -gamma must be positive");
if (strcmp (overlayfile, "none") == 0)
overlayfile = NULL;
/* if we're only rendering once, make sure we don't
* waste memory by allocating two pixmaps
*/
if (do_once)
use_two_pixmaps = 0;
/* if we're working with a one-bit display, force -mono mode
*/
if (dpth == 1)
mono = 1;
}
static void
init_x_colors ()
{
int i;
XColor xc, junk;
u_char *tmp;
double inv_xgamma;
if (mono) {
mono_dither_setup ();
pels = (Pixel *) malloc ((unsigned) sizeof (Pixel) * 2);
assert (pels != NULL);
pels[0] = black;
pels[1] = white;
} else {
if (XAllocNamedColor (dsply, cmap, "red", &xc, &junk) != 0)
hlight = xc.pixel;
dither_setup (num_colors);
pels = (Pixel *) malloc ((unsigned) sizeof (Pixel) * dither_ncolors);
assert (pels != NULL);
tmp = dither_colormap;
inv_xgamma = 1.0 / xgamma;
for (i = 0; i < dither_ncolors; i++) {
xc.red =
((1 << 16) - 1) * pow (((double) tmp[0] / 255), inv_xgamma);
xc.green =
((1 << 16) - 1) * pow (((double) tmp[1] / 255), inv_xgamma);
xc.blue =
((1 << 16) - 1) * pow (((double) tmp[2] / 255), inv_xgamma);
if (XAllocColor (dsply, cmap, &xc) == 0)
fatal ("unable to allocate enough colors");
pels[i] = xc.pixel;
tmp += 3;
}
for (i = 0; i < NUM_PAST_TIME_CLASS; ++i)
past_time_color[i] = get_color (dsply, past_time_color_name[i]);
radius_unit = wdth > hght ? hght / 500 : wdth / 500;
if (radius_unit == 0)
radius_unit = 1; // minmum 1 pixel unit
}
}
static void
init_x_pixmaps ()
{
work_pix = XCreatePixmap (dsply, root, (unsigned) wdth,
(unsigned) hght, (unsigned) dpth);
if (use_two_pixmaps)
disp_pix = XCreatePixmap (dsply, root, (unsigned) wdth,
(unsigned) hght, (unsigned) dpth);
}
static void
init_x_root_window ()
{
xearth_window = GetVRoot (dsply);
/* try to free any resources retained by any previous clients that
* scribbled in the root window (also deletes the _XSETROOT_ID
* property from the root window, if it was there)
*/
freePrevious (dsply, xearth_window);
/* 18 may 1994
*
* setting the _XSETROOT_ID property is dangerous if xearth might be
* killed by other means (e.g., from the shell), because some other
* client might allocate a resource with the same resource ID that
* xearth had stored in the _XSETROOT_ID property, so subsequent
* attempts to free any resources retained by a client that had
* scribbled on the root window via XKillClient() may end up killing
* the wrong client.
*
* this possibility could be eliminated by setting the closedown
* mode for the display connection to RetainPermanent, but this
* seemed to be causing core dumps in an R5pl26 server -- i submitted
* a bug report to the X consortium about this. i _think_ the server
* core dumps were related to the fact that xearth can sleep for a
* _long_ time between protocol requests, perhaps longer than it
* takes for one server to die (e.g., when somebody logs out) and a
* new server to be restarted, and somehow exercising the display
* connection from the old server was causing the new one to crash?
*
* possible fixes:
*
* - replace the big sleep() with a loop that interleaves sleep(1)
* and, say, calls to XNoOp() to test the display connection;
* presumably one second is short enough to avoid the possibility
* of one server dying and another restarting before a call to
* XNoOp() catches the fact that the connection to the old server
* died.
*
* - use RetainTemporary mode instead of RetainPermanent? need to
* check the X documentation and figure out exactly what this
* would mean.
*
* it would be nice to install the _XSETROOT_ID property so xearth
* interoperates gracefully with other things that try to scribble
* on the root window (e.g., xsetroot, xloadimage, xv), but until i
* figure out a fix to the problems described above, probably best
* not to bother.
*/
/* preserveResource(dsply, xearth_window); */
}
static void
init_x_separate_window ()
{
XSizeHints *xsh;
char *title;
char *iname;
xearth_window = XCreateSimpleWindow (dsply,
root,
window_xvalue,
window_yvalue,
wdth,
hght,
DefaultBorderWidth, white, black);
xsh = XAllocSizeHints ();
xsh->width = wdth;
xsh->height = hght;
xsh->min_width = wdth;
xsh->min_height = hght;
xsh->max_width = wdth;
xsh->max_height = hght;
xsh->base_width = wdth;
xsh->base_height = hght;
xsh->flags = (PSize | PMinSize | PMaxSize | PBaseSize);
if (window_pos_flag) {
xsh->x = window_xvalue;
xsh->y = window_yvalue;
xsh->win_gravity = window_gravity;
xsh->flags |= (USPosition | PWinGravity);
}
title = get_string_resource ("title", "Title");
iname = get_string_resource ("iconname", "Iconname");
if ((title == NULL) || (iname == NULL))
fatal ("title or iconname is NULL (this shouldn't happen)");
XSetWMNormalHints (dsply, xearth_window, xsh);
XStoreName (dsply, xearth_window, title);
XSetIconName (dsply, xearth_window, iname);
XMapRaised (dsply, xearth_window);
XSync (dsply, False);
XFree ((char *) xsh);
free (title);
free (iname);
}
void
x11_output ()
{
while (1) {
compute_positions ();
/* load earthquake data */
if (earthquake_info) {
get_earthquake_data ();
} // end if
/* if we were really clever, we'd only
* do this if the position has changed
*/
scan_map ();
do_dots ();
/* for now, go ahead and reload the marker info every time
* we redraw, but maybe change this in the future?
*/
load_marker_info (markerfile);
x11_setup ();
render (x11_row);
x11_cleanup ();
if (do_once) {
if (use_root)
preserveResource (dsply, xearth_window);
XSync (dsply, True);
return;
}
/* schedule an alarm for wait_time seconds and pause. alarm() and
* pause() are used instead of sleep so that if xearth is sent a
* SIGSTOP and SIGCONT separated by more than wait_time, it will
* refresh the screen as soon as the SIGCONT is received. this
* facilitates graceful interaction with things like FvwmBacker.
* (thanks to Richard Everson for passing this along.)
*/
signal (SIGALRM, wakeup);
signal (SIGCONT, wakeup);
if (wait_time > 0) {
/* only do the alarm()/pause() stuff if wait_time is non-zero,
* else alarm() will not behave as desired.
*/
alarm (wait_time);
pause ();
}
}
}
/* no-op signal handler for catching SIGALRM and SIGCONT
* (used to wake up from pause() system call)
*/
static void
wakeup (int junk)
{
/* nothing */
}
/* determine bits_per_pixel value for pixmaps of specified depth
*/
static int
get_bits_per_pixel (depth)
int depth;
{
int i;
int cnt;
XPixmapFormatValues *pmf;
int rslt;
pmf = XListPixmapFormats (dsply, &cnt);
if (pmf == NULL)
fatal ("unable to get pixmap format list");
rslt = 0;
for (i = 0; i < cnt; i++)
if (pmf[i].depth == depth) {
rslt = pmf[i].bits_per_pixel;
break;
}
if (rslt == 0)
fatal ("unable to determine pixmap format");
XFree (pmf);
return rslt;
}
static XFontStruct *
load_x_font (dpy, fontname)
Display *dpy;
char *fontname;
{
XFontStruct *rslt;
rslt = XLoadQueryFont (dpy, fontname);
if (rslt == NULL) {
rslt = XQueryFont (dpy, XGContextFromGC (gc));
if (rslt == NULL)
fatal ("completely unable to load fonts");
else
warning ("unable to load font, reverting to default");
} else {
XSetFont (dpy, gc, rslt->fid);
}
return rslt;
}
/* fetch and decode 'proj' resource (projection type)
*/
static void
get_proj_type ()
{
char *res;
res = get_string_resource ("proj", "Proj");
if (res != NULL) {
decode_proj_type (res);
free (res);
}
}
/* fetch and decode 'pos' resource (viewing position specifier)
*/
static void
get_viewing_position ()
{
char *res;
res = get_string_resource ("pos", "Pos");
if (res != NULL) {
decode_viewing_pos (res);
free (res);
}
}
/* fetch and decode 'sunpos' resource (sun position specifier)
*/
static void
get_sun_position ()
{
char *res;
res = get_string_resource ("sunpos", "Sunpos");
if (res != NULL) {
decode_sun_pos (res);
free (res);
}
}
/* fetch and decode 'rot' resource (rotation specifier)
*/
static void
get_rotation ()
{
char *res;
res = get_string_resource ("rot", "Rotation");
if (res != NULL) {
decode_rotation (res);
free (res);
}
}
/* fetch and decode 'size' resource (size specifier)
*/
static void
get_size ()
{
char *res;
res = get_string_resource ("size", "Size");
if (res != NULL) {
decode_size (res);
free (res);
}
}
/* fetch and decode 'shift' resource (shift specifier)
*/
static void
get_shift ()
{
char *res;
res = get_string_resource ("shift", "Shift");
if (res != NULL) {
decode_shift (res);
free (res);
}
}
/* fetch and decode 'ncolors' resource (color depth)
*/
static void
get_ncolors ()
{
char *res;
res = get_string_resource ("ncolors", "Ncolors");
if (res != NULL) {
decode_colors (res);
free (res);
}
}
/* fetch and decode 'labelpos' resource (label position)
*/
static void
get_labelpos ()
{
char *res;
int mask;
int x, y;
unsigned w, h;
/* it's somewhat brute-force ugly to hard-code these here,
* duplicating information contained in defaults[], but such it is.
*/
label_orient = 0;
label_xvalue = wdth - 5;
label_yvalue = hght - 5;
res = get_string_resource ("labelpos", "Labelpos");
if (res != NULL) {
mask = XParseGeometry (res, &x, &y, &w, &h);
if (mask & (WidthValue | HeightValue))
warning ("width and height ignored in label position");
if ((mask & XValue) && (mask & YValue)) {
label_xvalue = x;
label_yvalue = y;
if ((mask & XNegative) == 0)
label_orient |= LABEL_LEFT_FLUSH;
if ((mask & YNegative) == 0)
label_orient |= LABEL_TOP_FLUSH;
} else {
warning ("label position must specify x and y offsets");
}
free (res);
}
}
/* fetch and decode 'root' and 'geometry' resource (whether to render
* into root or separate window; if separate window, position of that
* window) [this is pretty ugly code, but it gets the job done ...]
*/
static void
get_geometry ()
{
int check_geom;
char *res;
int mask;
int x, y;
unsigned int w, h;
res = get_string_resource ("root", "Root");
if (res != NULL) {
free (res);
if (get_boolean_resource ("root", "Root")) {
/* user specified -root; render into the root window
* (ignore any -geometry, if provided)
*/
use_root = 1;
check_geom = 0;
} else {
/* user specified -noroot; render into separate window
*/
use_root = 0;
check_geom = 1;
}
} else {
/* user specified neither -root nor -noroot; if -geometry is
* provided, render into separate window, else render into root
*/
use_root = 1;
check_geom = 1;
}
/* if check_geom isn't set, nothing more to do
*/
if (check_geom == 0)
return;
/* look for -geometry and try to make sense of it
*/
res = get_string_resource ("geometry", "Geometry");
if (res != NULL) {
/* if -geometry is specified, assume -noroot and set default width
* and height (which get overridden by -geometry width and height,
* if provided)
*/
use_root = 0;
wdth = DefaultWdthHght;
hght = DefaultWdthHght;
mask = XParseGeometry (res, &x, &y, &w, &h);
/* extract width and height information
*/
if ((mask & WidthValue) && (mask & HeightValue)) {
wdth = w;
hght = h;
} else {
if ((mask & WidthValue) || (mask & HeightValue))
warning ("geometry must specify both width and height");
}
/* extract position information
*/
if ((mask & XValue) && (mask & YValue)) {
window_pos_flag = 1;
window_xvalue = x;
window_yvalue = y;
if (mask & XNegative) {
window_xvalue += (DisplayWidth (dsply, scrn) - wdth);
window_xvalue -= (2 * DefaultBorderWidth);
}
if (mask & YNegative) {
window_yvalue += (DisplayHeight (dsply, scrn) - hght);
window_yvalue -= (2 * DefaultBorderWidth);
}
if (mask & XNegative)
if (mask & YNegative)
window_gravity = SouthEastGravity;
else
window_gravity = NorthEastGravity;
else if (mask & YNegative)
window_gravity = SouthWestGravity;
else
window_gravity = NorthWestGravity;
} else {
if ((mask & XValue) || (mask & YValue))
warning ("geometry must specify both x and y offsets");
window_pos_flag = 0;
window_xvalue = 0;
window_yvalue = 0;
window_gravity = 0;
}
free (res);
} else if (use_root == 0) {
/* if -noroot was specified but no -geometry was provided, assume
* defaults
*/
wdth = DefaultWdthHght;
hght = DefaultWdthHght;
window_pos_flag = 0;
window_xvalue = 0;
window_yvalue = 0;
}
}
static void
x11_setup ()
{
unsigned dith_size;
unsigned xbuf_size;
switch (bpp) {
case 1:
dith_size = wdth + 7;
break;
case 8:
case 16:
case 24:
case 32:
dith_size = wdth;
break;
default:
dith_size = 0; /* keep lint happy */
fprintf (stderr,
"xearth %s: fatal - unsupported pixmap format (%d bits/pixel)\n",
VersionString, bpp);
exit (1);
}
xbuf_size = (dith_size * bpp) >> 3;
dith = (u16or32 *) malloc ((unsigned) sizeof (u16or32) * dith_size);
assert (dith != NULL);
xbuf = (u_char *) malloc ((unsigned) xbuf_size);
assert (xbuf != NULL);
xim = XCreateImage (dsply, visl, (unsigned) dpth, ZPixmap, 0,
(char *) xbuf, (unsigned) wdth, 1, 8, xbuf_size);
if (xim->bits_per_pixel != bpp) {
fprintf (stderr,
"xearth %s: fatal - unexpected bits/pixel for depth %d\n",
VersionString, dpth);
fprintf (stderr,
" (expected %d bits/pixel, actual value is %d)\n",
bpp, xim->bits_per_pixel);
exit (1);
}
if (bpp == 1) {
/* force MSBFirst bitmap_bit_order and byte_order
*/
xim->bitmap_bit_order = MSBFirst;
xim->byte_order = MSBFirst;
}
idx = 0;
}
/* pack pixels into ximage format (assuming bits_per_pixel == 1,
* bitmap_bit_order == MSBFirst, and byte_order == MSBFirst)
*/
static void
pack_mono_1 (src, dst)
u16or32 *src;
u_char *dst;
{
int i, i_lim;
unsigned val;
i_lim = wdth;
for (i = 0; i < i_lim; i += 8) {
val = ((src[0] << 7) | (src[1] << 6) | (src[2] << 5) |
(src[3] << 4) | (src[4] << 3) | (src[5] << 2) |
(src[6] << 1) | (src[7] << 0));