dockapps/wmtunlo/docklib.c

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/*--------------------------------*/
/* a simple dockapp library */
/* made from scratch */
/*--------------------------------*/
/*
functions were written by following People:
--- linked list
Kresten Krab Thorup
Alfredo K. Kojima
--- built-in Dock module for WindowMaker
Alfredo K. Kojima
--- wmgeneral (taken from wmppp)
Martijn Pieterse (pieterse@xs4all.nl)
--- prefs routines
Tomasz M<EFBFBD>ka
*/
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <stdarg.h>
#include <string.h>
#include <unistd.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <X11/Xlib.h>
#include <X11/xpm.h>
#include <X11/extensions/shape.h>
#include "docklib.h"
/* Return a cons cell produced from (head . tail) */
INLINE LinkedList*
list_cons(void* head, LinkedList* tail)
{
LinkedList* cell;
cell = (LinkedList*)malloc(sizeof(LinkedList));
cell->head = head;
cell->tail = tail;
return cell;
}
/* Return the length of a list, list_length(NULL) returns zero */
INLINE int
list_length(LinkedList* list)
{
int i = 0;
while(list)
{
i += 1;
list = list->tail;
}
return i;
}
/* Return the Nth element of LIST, where N count from zero. If N
larger than the list length, NULL is returned */
INLINE void*
list_nth(int index, LinkedList* list)
{
while(index-- != 0)
{
if(list->tail)
list = list->tail;
else
return 0;
}
return list->head;
}
/* Remove the element at the head by replacing it by its successor */
INLINE void
list_remove_head(LinkedList** list)
{
if (!*list) return;
if ((*list)->tail)
{
LinkedList* tail = (*list)->tail; /* fetch next */
*(*list) = *tail; /* copy next to list head */
free(tail); /* free next */
}
else /* only one element in list */
{
free(*list);
(*list) = 0;
}
}
INLINE LinkedList *
list_remove_elem(LinkedList* list, void* elem)
{
LinkedList *tmp;
if (list) {
if (list->head == elem) {
tmp = list->tail;
free(list);
return tmp;
}
list->tail = list_remove_elem(list->tail, elem);
return list;
}
return NULL;
}
/* Return element that has ELEM as car */
INLINE LinkedList*
list_find(LinkedList* list, void* elem)
{
while(list)
{
if (list->head == elem)
return list;
list = list->tail;
}
return NULL;
}
/* Free list (backwards recursive) */
INLINE void
list_free(LinkedList* list)
{
if(list)
{
list_free(list->tail);
free(list);
}
}
/* Map FUNCTION over all elements in LIST */
INLINE void
list_mapcar(LinkedList* list, void(*function)(void*))
{
while(list)
{
(*function)(list->head);
list = list->tail;
}
}
/*
*----------------------------------------------------------------------
* parse_command--
* Divides a command line into a argv/argc pair.
*----------------------------------------------------------------------
*/
#define PRC_ALPHA 0
#define PRC_BLANK 1
#define PRC_ESCAPE 2
#define PRC_DQUOTE 3
#define PRC_EOS 4
#define PRC_SQUOTE 5
typedef struct {
short nstate;
short output;
} DFA;
static DFA mtable[9][6] = {
{{3,1},{0,0},{4,0},{1,0},{8,0},{6,0}},
{{1,1},{1,1},{2,0},{3,0},{5,0},{1,1}},
{{1,1},{1,1},{1,1},{1,1},{5,0},{1,1}},
{{3,1},{5,0},{4,0},{1,0},{5,0},{6,0}},
{{3,1},{3,1},{3,1},{3,1},{5,0},{3,1}},
{{-1,-1},{0,0},{0,0},{0,0},{0,0},{0,0}}, /* final state */
{{6,1},{6,1},{7,0},{6,1},{5,0},{3,0}},
{{6,1},{6,1},{6,1},{6,1},{5,0},{6,1}},
{{-1,-1},{0,0},{0,0},{0,0},{0,0},{0,0}}, /* final state */
};
char*
next_token(char *word, char **next)
{
char *ptr;
char *ret, *t;
int state, ctype;
t = ret = malloc(strlen(word)+1);
ptr = word;
state = 0;
*t = 0;
while (1) {
if (*ptr==0)
ctype = PRC_EOS;
else if (*ptr=='\\')
ctype = PRC_ESCAPE;
else if (*ptr=='"')
ctype = PRC_DQUOTE;
else if (*ptr=='\'')
ctype = PRC_SQUOTE;
else if (*ptr==' ' || *ptr=='\t')
ctype = PRC_BLANK;
else
ctype = PRC_ALPHA;
if (mtable[state][ctype].output) {
*t = *ptr; t++;
*t = 0;
}
state = mtable[state][ctype].nstate;
ptr++;
if (mtable[state][0].output<0) {
break;
}
}
if (*ret==0)
t = NULL;
else
t = strdup(ret);
free(ret);
if (ctype==PRC_EOS)
*next = NULL;
else
*next = ptr;
return t;
}
extern void
parse_command(char *command, char ***argv, int *argc)
{
LinkedList *list = NULL;
char *token, *line;
int count, i;
line = command;
do {
token = next_token(line, &line);
if (token) {
list = list_cons(token, list);
}
} while (token!=NULL && line!=NULL);
count = list_length(list);
*argv = malloc(sizeof(char*)*count);
i = count;
while (list!=NULL) {
(*argv)[--i] = list->head;
list_remove_head(&list);
}
*argc = count;
}
extern pid_t
execCommand(char *command)
{
pid_t pid;
char **argv;
int argc;
parse_command(command, &argv, &argc);
if (argv==NULL) {
return 0;
}
if ((pid=fork())==0) {
char **args;
int i;
args = malloc(sizeof(char*)*(argc+1));
if (!args)
exit(10);
for (i=0; i<argc; i++) {
args[i] = argv[i];
}
args[argc] = NULL;
execvp(argv[0], args);
exit(10);
}
return pid;
}
/*****************/
/* X11 Variables */
/*****************/
Window Root;
int screen;
int x_fd;
int d_depth;
XSizeHints mysizehints;
XWMHints mywmhints;
Pixel back_pix, fore_pix;
char *Geometry = "";
Window iconwin, win;
GC NormalGC;
XpmIcon wmgen;
Pixmap pixmask;
/*****************/
/* Mouse Regions */
/*****************/
typedef struct {
int enable;
int top;
int bottom;
int left;
int right;
} MOUSE_REGION;
#define MAX_MOUSE_REGION (8)
MOUSE_REGION mouse_region[MAX_MOUSE_REGION];
/***********************/
/* Function Prototypes */
/***********************/
static void GetXPM(XpmIcon *, char **);
static Pixel GetColor(char *);
void RedrawWindow(void);
void AddMouseRegion(int, int, int, int, int);
int CheckMouseRegion(int, int);
/*******************************************************************************\
|* read_rc_file *|
\*******************************************************************************/
void parse_rcfile(const char *filename, rckeys *keys) {
char *p;
char temp[128];
char *tokens = " :\t\n";
FILE *fp;
int i,key;
fp = fopen(filename, "r");
if (fp) {
while (fgets(temp, 128, fp)) {
key = 0;
while (key >= 0 && keys[key].label) {
if ((p = strstr(temp, keys[key].label))) {
p += strlen(keys[key].label);
p += strspn(p, tokens);
if ((i = strcspn(p, "#\n"))) p[i] = 0;
free(*keys[key].var);
*keys[key].var = strdup(p);
key = -1;
} else key++;
}
}
fclose(fp);
}
}
/*******************************************************************************\
|* GetXPM *|
\*******************************************************************************/
static void GetXPM(XpmIcon *wmgen, char *pixmap_bytes[]) {
XWindowAttributes attributes;
int err;
/* For the colormap */
XGetWindowAttributes(display, Root, &attributes);
wmgen->attributes.valuemask |= (XpmReturnPixels | XpmReturnExtensions);
err = XpmCreatePixmapFromData(display, Root, pixmap_bytes, &(wmgen->pixmap),
&(wmgen->mask), &(wmgen->attributes));
if (err != XpmSuccess) {
fprintf(stderr, "Not enough free colorcells.\n");
exit(1);
}
}
/*******************************************************************************\
|* GetColor *|
\*******************************************************************************/
static Pixel GetColor(char *name) {
XColor color;
XWindowAttributes attributes;
XGetWindowAttributes(display, Root, &attributes);
color.pixel = 0;
if (!XParseColor(display, attributes.colormap, name, &color)) {
fprintf(stderr, "wm.app: can't parse %s.\n", name);
} else if (!XAllocColor(display, attributes.colormap, &color)) {
fprintf(stderr, "wm.app: can't allocate %s.\n", name);
}
return color.pixel;
}
/*******************************************************************************\
|* flush_expose *|
\*******************************************************************************/
static int flush_expose(Window w) {
XEvent dummy;
int i=0;
while (XCheckTypedWindowEvent(display, w, Expose, &dummy))
i++;
return i;
}
/*******************************************************************************\
|* RedrawWindow *|
\*******************************************************************************/
void RedrawWindow(void) {
flush_expose(iconwin);
XCopyArea(display, wmgen.pixmap, iconwin, NormalGC,
0,0, wmgen.attributes.width, wmgen.attributes.height, 0,0);
flush_expose(win);
XCopyArea(display, wmgen.pixmap, win, NormalGC,
0,0, wmgen.attributes.width, wmgen.attributes.height, 0,0);
}
/*******************************************************************************\
|* RedrawWindowXY *|
\*******************************************************************************/
void RedrawWindowXY(int x, int y) {
flush_expose(iconwin);
XCopyArea(display, wmgen.pixmap, iconwin, NormalGC,
x,y, wmgen.attributes.width, wmgen.attributes.height, 0,0);
flush_expose(win);
XCopyArea(display, wmgen.pixmap, win, NormalGC,
x,y, wmgen.attributes.width, wmgen.attributes.height, 0,0);
}
/*******************************************************************************\
|* AddMouseRegion *|
\*******************************************************************************/
void AddMouseRegion(int index, int left, int top, int right, int bottom) {
if (index < MAX_MOUSE_REGION) {
mouse_region[index].enable = 1;
mouse_region[index].top = top;
mouse_region[index].left = left;
mouse_region[index].bottom = bottom;
mouse_region[index].right = right;
}
}
/*******************************************************************************\
|* CheckMouseRegion *|
\*******************************************************************************/
int CheckMouseRegion(int x, int y) {
int i;
int found;
found = 0;
for (i=0; i<MAX_MOUSE_REGION && !found; i++) {
if (mouse_region[i].enable &&
x <= mouse_region[i].right &&
x >= mouse_region[i].left &&
y <= mouse_region[i].bottom &&
y >= mouse_region[i].top)
found = 1;
}
if (!found) return -1;
return (i-1);
}
/*******************************************************************************\
|* copyXPMArea *|
\*******************************************************************************/
void copyXPMArea(int x, int y, int sx, int sy, int dx, int dy) {
XCopyArea(display, wmgen.pixmap, wmgen.pixmap, NormalGC, x, y, sx, sy, dx, dy);
}
/*******************************************************************************\
|* copyXBMArea *|
\*******************************************************************************/
void copyXBMArea(int x, int y, int sx, int sy, int dx, int dy) {
XCopyArea(display, wmgen.mask, wmgen.pixmap, NormalGC, x, y, sx, sy, dx, dy);
}
/*******************************************************************************\
|* setMaskXY *|
\*******************************************************************************/
void setMaskXY(int x, int y) {
XShapeCombineMask(display, win, ShapeBounding, x, y, pixmask, ShapeSet);
XShapeCombineMask(display, iconwin, ShapeBounding, x, y, pixmask, ShapeSet);
}
/*******************************************************************************\
|* openXwindow *|
\*******************************************************************************/
void openXwindow(int argc, char *argv[], char *pixmap_bytes[], char *pixmask_bits, int pixmask_width, int pixmask_height) {
unsigned int borderwidth = 1;
XClassHint classHint;
char *display_name = NULL;
char *wname = argv[0];
XTextProperty name;
XGCValues gcv;
unsigned long gcm;
int dummy=0;
int i;
for (i=1; argv[i]; i++) {
if (!strcmp(argv[i], "-display"))
display_name = argv[i+1];
}
if (!(display = XOpenDisplay(display_name))) {
fprintf(stderr, "%s: can't open display %s\n",
wname, XDisplayName(display_name));
exit(1);
}
screen = DefaultScreen(display);
Root = RootWindow(display, screen);
d_depth = DefaultDepth(display, screen);
x_fd = XConnectionNumber(display);
/* Convert XPM to XImage */
GetXPM(&wmgen, pixmap_bytes);
/* Create a window to hold the stuff */
mysizehints.flags = USSize | USPosition;
mysizehints.x = 0;
mysizehints.y = 0;
back_pix = GetColor("white");
fore_pix = GetColor("black");
XWMGeometry(display, screen, Geometry, NULL, borderwidth, &mysizehints,
&mysizehints.x, &mysizehints.y,&mysizehints.width,&mysizehints.height, &dummy);
mysizehints.width = 64;
mysizehints.height = 64;
win = XCreateSimpleWindow(display, Root, mysizehints.x, mysizehints.y,
mysizehints.width, mysizehints.height, borderwidth, fore_pix, back_pix);
iconwin = XCreateSimpleWindow(display, win, mysizehints.x, mysizehints.y,
mysizehints.width, mysizehints.height, borderwidth, fore_pix, back_pix);
/* Activate hints */
XSetWMNormalHints(display, win, &mysizehints);
classHint.res_name = wname;
classHint.res_class = wname;
XSetClassHint(display, win, &classHint);
XSelectInput(display, win, ButtonPressMask | ExposureMask | ButtonReleaseMask | PointerMotionMask | StructureNotifyMask);
XSelectInput(display, iconwin, ButtonPressMask | ExposureMask | ButtonReleaseMask | PointerMotionMask | StructureNotifyMask);
if (XStringListToTextProperty(&wname, 1, &name) == 0) {
fprintf(stderr, "%s: can't allocate window name\n", wname);
exit(1);
}
XSetWMName(display, win, &name);
/* Create GC for drawing */
gcm = GCForeground | GCBackground | GCGraphicsExposures;
gcv.foreground = fore_pix;
gcv.background = back_pix;
gcv.graphics_exposures = 0;
NormalGC = XCreateGC(display, Root, gcm, &gcv);
/* ONLYSHAPE ON */
pixmask = XCreateBitmapFromData(display, win, pixmask_bits, pixmask_width, pixmask_height);
XShapeCombineMask(display, win, ShapeBounding, 0, 0, pixmask, ShapeSet);
XShapeCombineMask(display, iconwin, ShapeBounding, 0, 0, pixmask, ShapeSet);
/* ONLYSHAPE OFF */
mywmhints.initial_state = WithdrawnState;
mywmhints.icon_window = iconwin;
mywmhints.icon_x = mysizehints.x;
mywmhints.icon_y = mysizehints.y;
mywmhints.window_group = win;
mywmhints.flags = StateHint | IconWindowHint | IconPositionHint | WindowGroupHint;
XSetWMHints(display, win, &mywmhints);
XSetCommand(display, win, argv, argc);
XMapWindow(display, win);
}
FILE *prefs_filehandle;
char* p_strcpy (char *dest, const char *src, int maxlength);
char* p_strcat (char *dest, const char *src, int maxlength);
/*---------------------------------------------------------------------------*/
char* p_getdir_config (char *cdirectory)
{
static char cfgdir[MAX_PATH];
struct stat cfg;
p_strcpy (cfgdir, getenv ("HOME"), MAX_PATH);
p_strcat (cfgdir, slash, MAX_PATH);
p_strcat (cfgdir, cdirectory, MAX_PATH);
if(stat(cfgdir, &cfg) < 0)
mkdir(cfgdir, S_IRUSR | S_IWUSR | S_IXUSR);
return cfgdir;
}
/*---------------------------------------------------------------------------*/
char* p_getfilename_config (char *config_dir, char *config_filename)
{
static char filename[MAX_PATH];
p_strcpy (filename, p_getdir_config(config_dir), MAX_PATH);
p_strcat (filename, slash, MAX_PATH);
p_strcat (filename, config_filename, MAX_PATH);
return filename;
}
/*---------------------------------------------------------------------------*/
void* p_prefs_openfile (char *filename, int openmode)
{
prefs_filehandle = NULL;
if (openmode == P_READ)
prefs_filehandle = fopen (filename, "rb");
else if (openmode == P_WRITE)
prefs_filehandle = fopen (filename, "wb");
return prefs_filehandle;
}
void p_prefs_closefile (void)
{
fclose (prefs_filehandle);
}
/*---------------------------------------------------------------------------*/
void p_prefs_put_int (char *tagname, int value)
{
fprintf (prefs_filehandle, "%s=%d\n", tagname, value);
}
void p_prefs_put_float (char *tagname, float value)
{
fprintf (prefs_filehandle, "%s=%f\n", tagname, value);
}
void p_prefs_put_string (char *tagname, char *value)
{
fprintf (prefs_filehandle, "%s=%s\n", tagname, value);
}
void p_prefs_put_lf (void)
{
fprintf (prefs_filehandle, "\n");
}
void p_prefs_put_comment (char *comment)
{
char text[MAX_LINE_LEN];
p_strcpy (text, "# ", MAX_LINE_LEN);
p_strcat (text, comment, MAX_LINE_LEN);
fprintf (prefs_filehandle, text);
}
/*---------------------------------------------------------------------------*/
char* p_prefs_get_line_with_tag (char *tagname)
{
static char prfline[MAX_LINE_LEN];
int i;
char c;
fseek (prefs_filehandle, 0, SEEK_SET);
while (!feof (prefs_filehandle)) {
i = 0;
while (((c = fgetc (prefs_filehandle)) != crlf_char) && c!= EOF && i < MAX_LINE_LEN)
prfline[i++] = c;
prfline[i] = null_char;
if (prfline[0] != '#')
if (!strncmp (tagname, prfline, strlen (tagname))) break;
}
return prfline;
}
char* p_prefs_get_value_field (char *tagname)
{
static char valuestr[MAX_VALUE_LEN];
char *valpos, c;
int i;
i = 0;
if ((valpos = strchr (p_prefs_get_line_with_tag (tagname), '='))) {
while((c = valpos[i+1]) != null_char && i < MAX_VALUE_LEN) valuestr[i++] = c;
}
valuestr[i] = null_char;
return valuestr;
}
int p_prefs_get_int (char *tagname)
{
return (atoi (p_prefs_get_value_field (tagname)));
}
float p_prefs_get_float (char *tagname)
{
return (atof (p_prefs_get_value_field (tagname)));
}
char* p_prefs_get_string (char *tagname)
{
return (p_prefs_get_value_field (tagname));
}
/*---------------------------------------------------------------------------*/
/* following functions based on samba sources. */
/* safe_strcpy and safe_strcat routines written by Andrew Tridgell */
/*---------------------------------------------------------------------------*/
char* p_strcpy (char *dest, const char *src, int maxlength)
{
int len;
if (!dest) {
printf ("ERROR: NULL dest in safe_strcpy\n");
return NULL;
}
if (!src) {
*dest = 0;
return dest;
}
len = strlen(src);
if (len > maxlength) {
printf ("ERROR: string overflow by %d in safe_strcpy [%.50s]\n",
(int)(len-maxlength), src);
len = maxlength;
}
memcpy(dest, src, len);
dest[len] = 0;
return dest;
}
/*---------------------------------------------------------------------------*/
char* p_strcat (char *dest, const char *src, int maxlength)
{
int src_len, dest_len;
if (!dest) {
printf ("ERROR: NULL dest in safe_strcat\n");
return NULL;
}
if (!src) {
return dest;
}
src_len = strlen(src);
dest_len = strlen(dest);
if (src_len + dest_len > maxlength) {
printf ("ERROR: string overflow by %d in safe_strcat [%.50s]\n",
(int)(src_len + dest_len - maxlength), src);
src_len = maxlength - dest_len;
}
memcpy(&dest[dest_len], src, src_len);
dest[dest_len + src_len] = 0;
return dest;
}
/*---------------------------------------------------------------------------*/