READ-ONLY Archive
https://oldforum.puppylinux.com/
Code: Select all
/*
* proc2imgd.c
*
* Copyright 2014 Brad Conroy - released to public domain
*
*/
#include <fcntl.h> //open
#include <unistd.h> //read,write
#include <string.h> //strstr, strlen
#include <stdlib.h> //getenv
#include <sys/stat.h> //mkdir
#include <sys/statfs.h> //for statfs
#include <stdint.h> //for *int*_t
#include <libgen.h> //basename
#define strcpyALL(buf, l, ...) do{ \
char *bp=(char*)(buf); \
const char *s, *a[] = { __VA_ARGS__,NULL}, **ss=a; \
while((s=*ss++)) \
while((*s)&&((--l) >0)) \
*bp++=*s++; \
*bp=0; \
}while(0)
static inline int ispad(int X){return (X)==' '||(unsigned)(X)-'\t'<5;}
#define isnum(X) ((unsigned)(X)-'0' < 10)
int stod(const char *s){ //like atoi but no negatives and only for small numbers
int r=0;
while (ispad(*s))s++;
while (isnum(*s)) r = 10*r + (*s++ - '0');
return r;
}
static void dtos(int64_t d, char *buf){ //like itoa, but you pass the buffer
int p=0;
if (0>d) {
buf[p++]='-';
d=-d;
}
if (0==d){
buf[p++]='0';
buf[p]=0;
return;
}
int64_t i=1000000000000000000;
while (i > d) i/=10;
while (0<i){
buf[p++]=('0'+(d/i));
if (i<=d) d=d%i;
i/=10;
}
buf[p]=0;
return;
}
//GLOBALs
static char //default colors TODO read from config file
*line_color="#000", //lines, outlines, strokes, etc...
*foreground_color="#AAA", //foreground items ... usually the actual image
*background_color="#444", //background color ... todo match with theme
*text_color="#FFF", //use a text color that will work with both the bg and fg
*charge_color="#0F0", //usually green indicates a preferred status
*discharge_color="#F00", //usually red denotes less preferred status
*icon_width="22px", //set for standard tray size
*icon_height="22px",
buf[4096]={0},
HOME[64];
static const char
svg_header[]="<svg version=\"1.1\" xmlns=\"http://www.w3.org/2000/svg\" \tviewBox=\"0 0 100 100\" preserveAspectRatio=\"none\" ",
svg_footer[]="</svg>\n",
svg_width[]=" width=\"",
svg_height[]=" height=\"",
svg_x[]=" x=\"",
svg_y[]=" y=\"",
svg_quote[]="\" ",
svg_tag_end[]=">\n",
svg_tag_close[]="/>\n",
svg_rect[]="\t<rect ",
svg_fill[]=" fill=\"",
svg_text[]="\t<text ",
center[]=" text-anchor=\"middle\"",
rotate[]=" transform=\"rotate(90 50,50)\"",
svg_font_size[]=" font-size=\"",
svg_text_close[]="</text>\n";
#if 0
static inline void do_wifi(const char *wlan){
const char upload[]="M71,29L99,2L99,27L92,18,75,34",
download[] = "M98,0L70,27L70,5L77,12,90,0",
updown[] = "<path d=\"%s\" fill=\"%s\" stroke=\"%s\"/>\n",
sigqual[] = "<circle cx=\"0\" cy=\"100\" r=\"%d\" stroke=\"%s\" stroke-width=\"%d\" fill=\"%s\" fill-opacity=\"0.5\" />\n";
static int lastrcv=0, lastxmt=0;
int rcv,xmt,quality;
FILE *wireless = fopen("/proc/net/wireless", "r");
char dev[8], status[8], link[8], level[8], noise[8];
fgets(dummy, 99, wireless);
fgets(dummy, 99, wireless);
while (fscanf(fp, "%s %s %s %s %s %s\n", ip, hw, flags, mac, mask, dev) != EOF)
if (!strcmp(argv[1],ip))
printf("%s\n",dev);
return 0;
}
#endif
static inline void do_fs(char *fname, int *lastsz){
char extensions[]=" kMGTE", sz[8], *bp, outfile[64];
size_t ext=0, len=sizeof(outfile);
int fd;
if (!fname) return;
struct statfs st;
if ((statfs(fname, &st))<0) return;
uint64_t left = st.f_bfree * st.f_bsize;
while(left>1024){
left>>=10; //same as /=1024
++ext;
}
if ((int)left == *lastsz) return; //try not to trigger unnecessary redraw
else *lastsz=left;
dtos(left,sz);
bp=sz+strlen(sz);
if (ext) *bp++=extensions[ext];
*bp++='b';*bp++='\n';*bp++=0;
strcpyALL(outfile, len,HOME,(const char *)basename(fname),".svg");
if (( fd = open(outfile,O_WRONLY|O_CREAT|O_TRUNC,0644 ))<0) return;
len=sizeof(buf);
strcpyALL(buf, len,
svg_header,
svg_width,
icon_width,
svg_quote, svg_height,icon_height, svg_quote, svg_tag_end,
svg_rect, svg_width, "100%\"", svg_height, "100%\"",
svg_fill, background_color, svg_quote,
svg_tag_close,
svg_text, svg_x, "50\"", svg_y, "50\"",
svg_fill, text_color, svg_quote, svg_font_size, "30",
svg_quote, center, svg_tag_end, "\t\t",
sz, "\n",
svg_text_close,
svg_footer
);
write(fd,buf,strlen(buf));
close(fd);
return;
}
static inline void do_bat(char *batt, int *percent){
const char BAT[]="/proc/acpi/battery/";
char *bp=(char *)buf, fname[32], dy[24], ht[24];
int i, fd, len=sizeof(buf), chg=0, full_capacity=-1, discharging_capacity=-1, remaining_capacity=-1;
/* We _could_ just do this block once, but last full capacity may change */
i=sizeof(fname);
strcpyALL(fname, i, BAT, batt, "/info");
if (( fd = open(fname,O_RDONLY,0644 ))<0) return;
len = read(fd,buf,len);
close(fd);
if (len < 0) return;
buf[len]=0; //for strstr
if (!(bp = strstr(buf,"design capacity:"))) return;
else discharging_capacity = stod(&bp[25]);
if ((bp = strstr(buf,"last ful"))) full_capacity = stod(&bp[25]);
else full_capacity = discharging_capacity;
i=sizeof(fname);
strcpyALL(fname,i,BAT,batt,"/state");
if (( fd = open(fname,O_RDONLY,0644 ))<0) return;
i = read(fd,&(buf[len]),sizeof(buf)-len);
close(fd);
if (i < 0) return;
else buf[(len+=i)]=0;
if ((bp = strstr(buf,"remain")) && (i = stod(&bp[25])) == remaining_capacity) return;
else remaining_capacity = i;
if ((bp = strstr(buf,"charging st"))) chg=bp[25]-'c';
i=sizeof(fname);
i=(100*remaining_capacity)/((remaining_capacity>full_capacity)?discharging_capacity:full_capacity);
if (*percent==((chg)?-i:i)) return; //try not to trigger unnecessary redraw
else *percent = i;
strcpyALL(fname,i,HOME, batt, ".tt");
if (( fd = open(fname,O_WRONLY|O_CREAT|O_TRUNC,0644 ))<0) return;
len=write(fd,buf,len);
close(fd);
i=sizeof(fname);
strcpyALL(fname,i,HOME, batt, ".svg");
if (( fd = open(fname,O_WRONLY|O_CREAT|O_TRUNC,0644))<0) return;
dtos(100-*percent,dy);
dtos(*percent,ht);
if (chg) *percent=-*percent;
len=sizeof(buf);
strcpyALL(buf, len,
svg_header, svg_width, icon_width, svg_quote,
svg_height, icon_height, svg_quote, svg_tag_end,
svg_rect, svg_x, "20%\"",
svg_width, "60%\"",
svg_height, "100%\"",
svg_fill, background_color, svg_quote, svg_tag_close,
svg_rect, svg_x, "20%\"",
svg_width, "60%\"",
svg_y, dy, svg_quote,
svg_height, ht, svg_quote,
svg_fill, (chg)?discharge_color:charge_color, svg_quote, svg_tag_close,
svg_text, svg_x, "50\"",
svg_y, "50\"",
svg_fill, text_color, svg_quote,
svg_font_size, "30", svg_quote,
center, rotate, svg_tag_end, "\t\t", batt, "\n",
svg_text_close,
svg_footer
);
write(fd,buf,sizeof(buf)-len);
}
int main(int argc, char **argv){
int len=sizeof(HOME),
state[argc/2];
strcpyALL(HOME,len,getenv("HOME"),"/.sit/");
mkdir(HOME,0422);
do{
do_fs("/mnt/save",&state[0]);
do_bat("BAT0",&state[1]);
//do_wifi("wlan0",&state[2]); //todo
}while(!sleep(1));
return 0;
} torios wrote:Code: Select all
bp ... things that end in p are typically pointers, in this case to buf fd ... file descriptor (typically anything that ends with fd) i ... just an integer for temporary use chg (is this charged?) ... actually I should have renamed it dchg (it is a 1 when discharging or a 0 when charged or charging) I used the fact that their ascii values are sequential d I didn't want a full itoa function so used the printf format specifiers and called it dtos (int to string) p used inside [] for position (I wrote it before I really understood pointers) s string ss 2d array of strings or pointer to array of strings r the return value sz... follow the loop that fills it (it converts integer to string with b,K,M,G,...)
so the c program is running and spitting out .svg and .tt filestechnosaurus wrote: -i <include files>
-b <background imagge>
-t <status icon> <tooltip> <left click action> <right click action>
the -t option can be used multiple times,
Because the GTK devs felt it necessary to write 2 additional event handlers for the status icon (popup and activate) instead of just using button press events.Argolance wrote:why no action is assigned to the middle button of the mouse?
Only by completely rewriting an alternative statusicon widget.Could this be possible and how?
A bureaucratic process has to be involved; otherwise the world be heading nowhere.technosaurus wrote:(...)
FWIW GTK devs do this a lot (add extra code that reduces functionality)
... another example of such is GtkIconView. It could make a perfect desktop icon replacement in ~10 lines except that they added code to the widget itself that makes the background solid white... you can only change the color, not add a background image.
Why? Very strange indeed!: It is a pity...technosaurus wrote:FWIW GTK devs do this a lot (add extra code that reduces functionality)
Perhaps 'yad' could be used to make such a 'simple icon tray' and should offer more capabilities?Only by completely rewriting an alternative statusicon widget.
??musher0 wrote:A bureaucratic process has to be involved; otherwise the world be heading nowhere
Yad is also gtk based, so no.Argolance wrote:Perhaps 'yad' could be used to make such a 'simple icon tray' and should offer more capabilities?
Fltk doesn't have a tray icon widget.torios wrote:I like FLTK quite a bit, it keeps improving and making things easier, rather than removing functionality.
You can make very small programs easily with FLUID to design the UX.
Might be something for other posters here to consider.
Code: Select all
#include <X11/X.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Xatom.h>
#include <stdio.h>
typedef enum systray_opcode_tag {
SYSTEM_TRAY_REQUEST_DOCK = 0,
SYSTEM_TRAY_BEGIN_MESSAGE = 1,
SYSTEM_TRAY_CANCEL_MESSAGE = 2
} systray_opcode_t;
void send_message(
Display *disp,
Window dest,
systray_opcode_t message,
long data1,
long data2,
long data3)
{
XEvent ev;
memset( &ev, 0, sizeof(ev)) ;
ev.xclient.type = ClientMessage ;
ev.xclient.window = dest;
ev.xclient.message_type = XInternAtom( disp, "_NET_SYSTEM_TRAY_OPCODE", False );
ev.xclient.format = 32 ;
ev.xclient.data.l[0] = CurrentTime ;
ev.xclient.data.l[1] = message ;
ev.xclient.data.l[2] = data1 ;
ev.xclient.data.l[3] = data2 ;
ev.xclient.data.l[4] = data3 ;
/* XXX handle error XXX */
XSendEvent( disp, dest, False, NoEventMask, &ev) ;
XSync( disp, False) ;
}
int main()
{
Display *disp ;
Window tray ;
Window icon ;
Window container = None ;
GC gc ;
XEvent ev ;
int icon_size = 22 ;
disp = XOpenDisplay(NULL) ;
/* get system tray(as a embedder). */
/* XXX exec tray if it is nonexistent */
/* XXX assuming screen is 0 */
tray = XGetSelectionOwner( disp,
XInternAtom(disp, "_NET_SYSTEM_TRAY_S0", True) );
printf("tray window = %p\n", tray) ;
/* create system tray icon window */
icon = XCreateSimpleWindow( disp, DefaultRootWindow(disp),
0,0, icon_size,icon_size, 0, 0xFF,0x0);
printf("icon window = %p\n", icon) ;
/* select all of masks for debugging */
XSelectInput( disp, icon, (OwnerGrabButtonMask << 1) -1 );
/* create GC */
gc = XCreateGC( disp, icon, 0, NULL);
XSetForeground( disp, gc, 0xFF) ;
/* set minimum size */
{
XSizeHints *hints;
hints = XAllocSizeHints() ;
hints->flags = PMinSize ;
hints->min_width=icon_size;
hints->min_height=icon_size;
XSetWMNormalHints( disp, icon, hints);
XFree( hints);
}
/* set xembed infos */
{
Atom xa_xembed_info ;
unsigned int buffer[2];
xa_xembed_info = XInternAtom( disp, "_XEMBED_INFO", False) ;
buffer[0]=0; /* ver 0 (0:0?) */
buffer[1]=1; /* request mapping */
XChangeProperty( disp, icon, xa_xembed_info,
xa_xembed_info, 32, PropModeReplace,
(unsigned char *)buffer, 2);
}
/* request embedding */
send_message( disp, tray, SYSTEM_TRAY_REQUEST_DOCK, icon,0,0);
while(1){
XNextEvent( disp, &ev);
printf("type %d\n", ev.type);
switch(ev.type)
{
case Expose: /*12*/
XClearWindow( disp, icon);
XDrawLine( disp, icon, gc, 1,1, icon_size-1,icon_size-1) ;
printf("\texpose\n");
break;
case VisibilityNotify: /*15*/
printf("\tvisible\n");
break;
case MapNotify: /*19*/
printf("\tmapped\n");
break;
case ReparentNotify: /*21*/
printf("\twindow %p\n", ev.xreparent.parent);
break;
case ResizeRequest: /*25*/
printf("\twidth %d\n", ev.xresizerequest.width);
printf("\theight %d\n", ev.xresizerequest.height);
if( ev.xresizerequest.width > ev.xresizerequest.height)
icon_size = ev.xresizerequest.height ;
else
icon_size = ev.xresizerequest.width ;
XResizeWindow( disp, icon, icon_size, icon_size);
if(container)
XResizeWindow( disp, container, icon_size, icon_size);
break;
case PropertyNotify: /*29*/
printf("\tatom %s\n", XGetAtomName( disp, ev.xproperty.atom));
break;
case ClientMessage: /*33*/
printf("\twindow %p\n", ev.xclient.window);
printf("\ttype %s\n", XGetAtomName( disp, ev.xclient.message_type));
printf("\ttime 0x%X\n", ev.xclient.data.l[0]);
printf("\tmajor 0x%X\n", ev.xclient.data.l[1]);
printf("\tdetail 0x%X\n", ev.xclient.data.l[2]);
printf("\tdata1 0x%X\n", ev.xclient.data.l[3]);
printf("\tdata2 0x%X\n", ev.xclient.data.l[4]);
/* container window could be got from ReparentNotify */
if( ev.xclient.data.l[1] == 0)
container = ev.xclient.data.l[3] ;
break;
default:
;
};
}
}