834 lines
25 KiB
C

/* This file is part of the Project Athena Zephyr Notification System.
* It is one of the source files comprising zwgc, the Zephyr WindowGram
* client.
*
* Created by: Marc Horowitz <marc@athena.mit.edu>
*
* $Id$
*
* Copyright (c) 1989 by the Massachusetts Institute of Technology.
* For copying and distribution information, see the file
* "mit-copyright.h".
*/
#include <sysdep.h>
#if (!defined(lint) && !defined(SABER))
static const char rcsid_xshow_c[] = "$Id$";
#endif
#include <zephyr/mit-copyright.h>
#ifndef X_DISPLAY_MISSING
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Xresource.h>
#include <zephyr/zephyr.h>
#include "pointer_dictionary.h"
#include "new_memory.h"
#include "new_string.h"
#include "formatter.h"
#include "variables.h"
#include "zwgc.h"
#include "X_driver.h"
#include "X_fonts.h"
#include "X_gram.h"
#include "xmode_stack.h"
#ifdef CMU_ZWGCPLUS
#include <zephyr/zephyr.h>
#include "xrevstack.h"
#include "plus.h"
#include "xcut.h"
#endif
#define max(a,b) ((a)>(b)?(a):(b))
XContext desc_context;
extern int internal_border_width;
extern unsigned long default_bgcolor;
extern unsigned long default_fgcolor;
void
xshowinit(void)
{
desc_context = XUniqueContext();
}
struct res_dict_type {
pointer_dictionary dict;
char * resname_suffix;
char * resclass;
};
static char *
xres_get_resource(struct res_dict_type *restype,
char *style)
{
char *desc;
pointer_dictionary_binding *binding;
int exists;
char *value;
desc=string_Concat("style.", style);
desc=string_Concat2(desc, restype->resname_suffix);
if (!restype->dict)
restype->dict = pointer_dictionary_Create(37);
binding = pointer_dictionary_Define(restype->dict, desc, &exists);
if (exists) {
free(desc);
return((string) binding->value);
} else {
value=get_string_resource(desc, restype->resclass);
free(desc);
if (value==NULL)
pointer_dictionary_Delete(restype->dict, binding);
else
binding->value=(pointer) value;
return value; /* If resource returns NULL, return NULL also */
}
}
static struct res_dict_type geometry_resources = {
NULL, ".geometry", "StyleKey.Style1.Style2.Style3.GeometryKey",
};
static struct res_dict_type bgcolor_resources = {
NULL, ".background", "StyleKey.Style1.Style2.Style3.BackgroundKey",
};
#define xres_get_geometry(style) xres_get_resource(&geometry_resources,style)
#define xres_get_bgcolor(style) xres_get_resource(&bgcolor_resources,style)
static struct res_dict_type fgcolor_resources = {
NULL, ".foreground",
"StyleKey.Style1.Style2.Style3.SubstyleKey.Substyle.ForegroundKey",
};
/*ARGSUSED*/
static char *
mode_to_colorname (Display *dpy,
char *style,
xmode *mode)
{
char *desc, *result;
desc = string_Concat (style, ".substyle.");
desc = string_Concat2 (desc, mode->substyle);
result = xres_get_resource (&fgcolor_resources, desc);
free (desc);
return result;
}
static void
fixup_and_draw(Display *dpy,
char *style,
xauxblock *auxblocks,
xblock *blocks,
int num,
xlinedesc *lines,
int numlines,
int beepcount)
{
int gram_xalign = 1;
int gram_yalign = 1;
int gram_xpos, gram_ypos, gram_xsize, gram_ysize;
x_gram *gram;
int strindex = 0;
int line, block=0;
int maxwidth=0, chars=0, maxascent, maxdescent;
int ssize, lsize,csize, rsize, width = 0;
int i, ascent, descent;
int yofs = internal_border_width;
int lofs, cofs, rofs;
int ystart,yend;
char *bgstr, *geometry, xpos[10], ypos[10], xfrom, yfrom;
XFontSetExtents *fse;
gram = (x_gram *)malloc(sizeof(x_gram));
/* Find total lengths of left, center, and right parts. Also find the
length of the longest line and the total number of characters. */
for (line = 0; line < numlines; line++) {
lsize = csize = rsize = 0;
maxascent = maxdescent = 0;
/* add up sizes for each block, get max ascent and descent */
for (i = 0; i < lines[line].numblock; i++, block++) {
chars += auxblocks[block].len;
#ifdef X_HAVE_UTF8_STRING
ssize = Xutf8TextEscapement(auxblocks[block].font,
blocks[block].wstr,
blocks[block].wlen);
#else
ssize = XwcTextEscapement(auxblocks[block].font,
(wchar_t *)blocks[block].wstr,
blocks[block].wlen);
#endif
auxblocks[block].width = ssize;
fse = XExtentsOfFontSet(auxblocks[block].font);
ascent = -fse->max_logical_extent.y;
descent = fse->max_logical_extent.y + fse->max_logical_extent.height;
if (ascent > maxascent)
maxascent = ascent;
if (descent > maxdescent)
maxdescent = descent;
switch (auxblocks[block].align) {
case LEFTALIGN:
lsize += ssize;
break;
case CENTERALIGN:
csize += ssize;
break;
case RIGHTALIGN:
rsize += ssize;
break;
}
}
/* save what we need to do size fixups */
if (maxascent > lines[line].ascent)
lines[line].ascent = maxascent;
if (maxdescent > lines[line].descent)
lines[line].descent = maxdescent;
lines[line].lsize = lsize;
lines[line].csize = csize;
lines[line].rsize = rsize;
/* get width of line and see if it is bigger than the max width */
switch ((lsize ? 1 : 0) + (csize ?2 : 0) + (rsize ? 4 : 0)) {
#ifdef DEBUG
default:
abort();
#endif
case 0:
width = 0;
break;
case 1:
width = lsize;
break;
case 2:
width = csize;
break;
case 3:
/* in all these cases, we just want to add the width of *any*
space, so the first font will do just fine. */
/* XXX implicit assumption that a line must have at least one
block, so that there is indeed a reasonable font in
auxblocks[0].font */
width = lsize * 2 + csize + XmbTextEscapement(auxblocks[0].font, " ", 1);
break;
case 4:
width = rsize;
break;
case 5:
width = lsize + rsize + XmbTextEscapement(auxblocks[0].font, " ", 1);
break;
case 6:
width = csize + rsize * 2 + XmbTextEscapement(auxblocks[0].font, " ", 1);
break;
case 7:
width = max(lsize, rsize) * 2 + csize +
XmbTextEscapement(auxblocks[0].font, " ", 1) * 2;
break;
}
if (width > maxwidth)
maxwidth = width;
}
/* fixup x,y for each block, create big string and indices into it */
/* set x1,y1,x2,y2 of each block also. */
gram->text = (char *)malloc(chars);
block = 0;
for (line = 0; line < numlines; line++) {
lofs = internal_border_width;
cofs = ((maxwidth - lines[line].csize) >> 1) + internal_border_width;
rofs = maxwidth - lines[line].rsize + internal_border_width;
ystart = yofs;
yofs += lines[line].ascent;
yend = yofs + lines[line].descent + 1; /* +1 because lines look scrunched
without it. */
for (i = 0; i < lines[line].numblock; i++, block++) {
blocks[block].font = auxblocks[block].font;
switch (auxblocks[block].align) {
case LEFTALIGN:
blocks[block].x = lofs;
blocks[block].x1 = lofs;
lofs += auxblocks[block].width;
blocks[block].x2 = lofs;
break;
case CENTERALIGN:
blocks[block].x = cofs;
blocks[block].x1 = cofs;
cofs += auxblocks[block].width;
blocks[block].x2 = cofs;
break;
case RIGHTALIGN:
blocks[block].x = rofs;
blocks[block].x1 = rofs;
rofs += auxblocks[block].width;
blocks[block].x2 = rofs;
break;
}
blocks[block].y = yofs;
blocks[block].y1 = ystart;
blocks[block].y2 = yend;
blocks[block].strindex = strindex;
blocks[block].strlen = auxblocks[block].len;
strncpy(gram->text + strindex, auxblocks[block].str,
auxblocks[block].len);
strindex += blocks[block].strlen;
}
yofs = yend;
}
geometry = var_get_variable("X_geometry");
if (geometry[0] == '\0')
geometry = xres_get_geometry(style);
if (geometry == NULL)
geometry = var_get_variable("default_X_geometry");
if (geometry[0] == '\0')
geometry = "+0+0";
sscanf(geometry, "%c%[0123456789c]%c%[0123456789c]", &xfrom, xpos,
&yfrom, ypos);
if (xpos[0] == 'c') {
gram_xalign = 0;
gram_xpos = 0;
} else
gram_xpos = atoi(xpos);
if (xfrom == '-')
gram_xalign *= -1;
if (ypos[0] == 'c') {
gram_yalign = 0;
gram_ypos = 0;
} else
gram_ypos = atoi(ypos);
if (yfrom == '-')
gram_yalign *= -1;
bgstr = var_get_variable("X_background");
if (bgstr[0] == '\0')
bgstr = xres_get_bgcolor(style);
if (bgstr == NULL)
bgstr = var_get_variable("default_X_background");
if (bgstr[0]=='\0')
gram->bgcolor = default_bgcolor;
if (bgstr && bgstr[0])
gram->bgcolor = x_string_to_color(bgstr, default_bgcolor);
gram_xsize = maxwidth + (internal_border_width << 1);
gram_ysize = yofs + internal_border_width;
gram->numblocks = num;
gram->blocks = blocks;
#ifdef CMU_ZWGCPLUS
gram->notice = get_stored_notice();
#endif
x_gram_create(dpy, gram, gram_xalign, gram_yalign, gram_xpos,
gram_ypos, gram_xsize, gram_ysize, beepcount);
}
/* Silly almost-but-not-quite-useless helper function */
static char *
no_dots_downcase_var(char *str)
{
register char *var, *var2;
var = string_Downcase(var_get_variable(str));
var2 = var;
while (*var++)
if (*var == '.')
*var = '_';
return(var2);
}
inline static XFontSet
mode_to_font(Display *dpy, char *style, xmode *mode) {
return get_font(dpy,
style,
mode->font ? mode->font : mode->substyle,
mode->size,
mode->bold + mode->italic * 2);
}
inline static int
envmatch(desctype *desc, char *str) {
int len = strlen(str);
return desc->len == len && strncasecmp(desc->str, str, len) == 0;
}
void
xshow(Display *dpy, desctype *desc, int numstr, int numnl)
{
XFontSet font;
XFontSetExtents *fse;
xmode_stack modes = xmode_stack_create();
xmode curmode;
xlinedesc *lines;
xblock *blocks;
xauxblock *auxblocks;
int nextblock=0;
int line=0,linestart=0;
char *style;
int free_style = 0;
int beepcount = 0;
char *notice_charset = var_get_variable("notice_charset");
int i;
lines = (xlinedesc *)malloc(sizeof(xlinedesc) * (numnl + 1));
blocks = (xblock *)malloc(sizeof(xblock) * numstr);
auxblocks = (xauxblock *)malloc(sizeof(xauxblock) * numstr);
memset(&curmode, 0, sizeof(curmode));
curmode.bold = 0;
curmode.italic = 0;
curmode.size = MEDIUM_SIZE;
curmode.align = LEFTALIGN;
curmode.expcolor = 0;
curmode.substyle = string_Copy("default");
curmode.font = NULL;
style = var_get_variable("style");
if (style[0] == '\0') {
style = string_Concat(no_dots_downcase_var("class"), ".");
style = string_Concat2(style, no_dots_downcase_var("instance"));
style = string_Concat2(style, ".");
style = string_Concat2(style, no_dots_downcase_var("sender"));
string_Downcase(style);
free_style = 1;
}
for (; desc->code != DT_EOF; desc = desc->next) {
switch (desc->code) {
case DT_ENV:
xmode_stack_push(modes, curmode);
curmode.substyle = string_Copy(curmode.substyle);
if (curmode.font)
curmode.font = string_Copy(curmode.font);
if (envmatch(desc, "roman")) {
curmode.bold = 0;
curmode.italic = 0;
} else if (envmatch(desc, "bold") || envmatch(desc, "b"))
curmode.bold = 1;
else if (envmatch(desc, "italic") || envmatch(desc, "i"))
curmode.italic = 1;
else if (envmatch(desc, "large"))
curmode.size = LARGE_SIZE;
else if (envmatch(desc, "medium"))
curmode.size = MEDIUM_SIZE;
else if (envmatch(desc, "small"))
curmode.size = SMALL_SIZE;
else if (envmatch(desc, "left") || envmatch(desc, "l"))
curmode.align = LEFTALIGN;
else if (envmatch(desc, "center") || envmatch(desc, "c"))
curmode.align = CENTERALIGN;
else if (envmatch(desc, "right") || envmatch(desc, "r"))
curmode.align = RIGHTALIGN;
else if (envmatch(desc, "beep"))
beepcount++;
else if (envmatch(desc, "font")) {
/* lookahead needed. desc->next->str should be the
font name, and desc->next->next->code should be
a DT_END*/
if ((desc->next) &&
(desc->next->next) &&
(desc->next->code == DT_STR) &&
(desc->next->next->code == DT_END)) {
/* Since @font mutates the current environment, we have
to pop the environment that this case usually pushes */
free(curmode.substyle);
curmode = xmode_stack_top(modes);
xmode_stack_pop(modes);
/* mutating... */
curmode.size = SPECIAL_SIZE; /* This is an @font() */
curmode.font = string_CreateFromData(desc->next->str,
desc->next->len);
/* skip over the rest of the @font */
desc = desc->next->next;
}
} else if (envmatch(desc, "color")) {
/* lookahead needed. desc->next->str should be the
font name, and desc->next->next->code should be
a DT_END*/
if ((desc->next) &&
(desc->next->next) &&
(desc->next->code == DT_STR) &&
(desc->next->next->code == DT_END)) {
char *colorname;
/* Since @font mutates the current environment, we have
to pop the environment that this case usually pushes */
free(curmode.substyle);
curmode = xmode_stack_top(modes);
xmode_stack_pop(modes);
/* mutating... */
colorname = string_CreateFromData(desc->next->str,
desc->next->len);
curmode.color = x_string_to_color(colorname, default_fgcolor);
free(colorname);
curmode.expcolor = 1;
/* skip over the rest of the @font */
desc = desc->next->next;
}
} else if (desc->len > 0) { /* avoid @{...} */
free(curmode.substyle);
if (curmode.font) {
free(curmode.font);
curmode.font = NULL;
}
curmode.substyle = string_CreateFromData(desc->str, desc->len);
}
break;
case DT_STR:
auxblocks[nextblock].align = curmode.align;
auxblocks[nextblock].font = mode_to_font(dpy, style, &curmode);
auxblocks[nextblock].str = desc->str;
auxblocks[nextblock].len = desc->len;
i = ZTransliterate(desc->str, desc->len,
strcmp(notice_charset, "UNKNOWN") ?
notice_charset : "ISO-8859-1",
#ifdef X_HAVE_UTF8_STRING
"UTF-8",
#else
"UTF-16BE",
#endif
&blocks[nextblock].wstr,
&blocks[nextblock].wlen);
if (i) {
var_set_variable("error", strerror(i));
#ifdef X_HAVE_UTF8_STRING
blocks[nextblock].wlen = desc->len;
blocks[nextblock].wstr = strdup(desc->str);
#else
blocks[nextblock].wlen = desc->len * 2;
blocks[nextblock].wstr = malloc(blocks[nextblock].wlen);
for (i = 0; i < desc->len; i++)
*(short *)&(blocks[nextblock].wstr[i * 2]) = htons((short)(unsigned char)desc->str[i]);
/* XXX */
#endif
}
#ifndef X_HAVE_UTF8_STRING
blocks[nextblock].wlen /= 2;
#endif
if (curmode.expcolor)
blocks[nextblock].fgcolor = curmode.color;
else
blocks[nextblock].fgcolor =
x_string_to_color(mode_to_colorname(dpy, style, &curmode),
default_fgcolor);
nextblock++;
break;
case DT_END:
free(curmode.substyle);
curmode = xmode_stack_top(modes);
xmode_stack_pop(modes);
break;
case DT_NL:
lines[line].startblock = linestart;
lines[line].numblock = nextblock-linestart;
font = mode_to_font(dpy, style, &curmode);
fse = XExtentsOfFontSet(font);
lines[line].ascent = -fse->max_logical_extent.y;
lines[line].descent = fse->max_logical_extent.y +
fse->max_logical_extent.height;
line++;
linestart = nextblock;
break;
}
}
/* case DT_EOF: will drop through to here. */
if (linestart != nextblock) {
lines[line].startblock = linestart;
lines[line].numblock = nextblock-linestart;
font = mode_to_font(dpy, style, &curmode);
lines[line].ascent = 0;
lines[line].descent = 0;
line++;
}
free(curmode.substyle);
fixup_and_draw(dpy, style, auxblocks, blocks, nextblock, lines, line,
beepcount);
free(lines);
free(auxblocks);
if (free_style)
free(style);
}
static void
xhandleevent(Display *dpy,
Window w,
XEvent *event)
{
XPointer gramp; /* Avoid strict aliasing violation */
x_gram *gram;
if (XFindContext(dpy, w, desc_context, &gramp))
return;
gram = (x_gram *)gramp;
if (event->type == Expose)
x_gram_expose(dpy, w, gram,&(event->xexpose));
else
xcut(dpy, event, desc_context);
XFlush(dpy);
}
void
x_get_input(Display *dpy)
{
XEvent event;
dprintf1("Entering x_get_input(%lx).\n",(unsigned long)dpy);
/*
* Kludge to get around lossage in XPending:
*
* (the problem: XPending on a partial packet returns 0 without
* reading in the packet. This causes a problem when the X server
* dies in the middle of sending a packet.)
*/
if (XPending(dpy)==0)
XNoOp(dpy); /* Ensure server is still with us... */
while (XPending(dpy)) {
XNextEvent(dpy,&event);
xhandleevent(dpy, event.xany.window, &event);
}
}
#ifdef CMU_ZWGCPLUS
void
plus_window_deletions(ZNotice_t *notice)
{
x_gram *tmp, *fry;
char *val;
int done;
static char class_nm[NAMESIZE], instance_nm[NAMESIZE], recip_nm[NAMESIZE];
if (!x_dpy)
return;
val = var_get_variable("delete_window");
#ifdef DEBUG_DELETION
fprintf(stderr, "delete_window(%s)\n", val);
#endif
if (val) {
if (!strcmp(val, "this")) {
do {
done = 1;
tmp = bottom_gram;
while (tmp) {
if (tmp->notice == notice) {
fry = tmp;
tmp = tmp->above;
xdestroygram(x_dpy, fry->w, desc_context, fry);
done = 0;
} else {
tmp = tmp->above;
}
}
} while (!done);
}
else if (!strcmp(val, "s")) {
/* I cheated. This is really sender, not class */
strcpy(class_nm, notice->z_sender);
do {
done = 1;
tmp = bottom_gram;
while (tmp) {
if (!strcasecmp(((ZNotice_t *)(tmp->notice))->z_sender, class_nm)) {
fry = tmp;
tmp = tmp->above;
xdestroygram(x_dpy, fry->w, desc_context, fry);
done = 0;
} else {
tmp = tmp->above;
}
}
} while (!done);
}
else if (!strcmp(val, "ns")) {
/* I cheated. This is really sender, not class */
strcpy(class_nm, notice->z_sender);
do {
done = 1;
tmp = bottom_gram;
while (tmp) {
if (!!strcasecmp(((ZNotice_t *)(tmp->notice))->z_sender, class_nm)) {
fry = tmp;
tmp = tmp->above;
xdestroygram(x_dpy, fry->w, desc_context, fry);
done = 0;
} else {
tmp = tmp->above;
}
}
} while (!done);
}
else if (!strcmp(val, "r")) {
strcpy(recip_nm, notice->z_recipient);
do {
done = 1;
tmp = bottom_gram;
while (tmp) {
if (!strcasecmp(((ZNotice_t *)(tmp->notice))->z_recipient, recip_nm)) {
fry = tmp;
tmp = tmp->above;
xdestroygram(x_dpy, fry->w, desc_context, fry);
done = 0;
} else {
tmp = tmp->above;
}
}
} while (!done);
}
else if (!strcmp(val, "nr")) {
strcpy(recip_nm, notice->z_recipient);
do {
done = 1;
tmp = bottom_gram;
while (tmp) {
if (!!strcasecmp(((ZNotice_t *)(tmp->notice))->z_recipient, recip_nm)) {
fry = tmp;
tmp = tmp->above;
xdestroygram(x_dpy, fry->w, desc_context, fry);
done = 0;
} else {
tmp = tmp->above;
}
}
} while (!done);
}
else if (!strcmp(val, "cir")) {
strcpy(class_nm, notice->z_class);
strcpy(instance_nm, notice->z_class_inst);
strcpy(recip_nm, notice->z_recipient);
do {
done = 1;
tmp = bottom_gram;
while (tmp) {
if (!strcasecmp(((ZNotice_t *)(tmp->notice))->z_class_inst, instance_nm)
&& !strcasecmp(((ZNotice_t *)(tmp->notice))->z_class, class_nm)
&& !strcasecmp(((ZNotice_t *)(tmp->notice))->z_recipient, recip_nm))
{
fry = tmp;
tmp = tmp->above;
xdestroygram(x_dpy, fry->w, desc_context, fry);
done = 0;
} else {
tmp = tmp->above;
}
}
} while (!done);
}
else if (!strcmp(val, "ci")) {
strcpy(class_nm, notice->z_class);
strcpy(instance_nm, notice->z_class_inst);
do {
done = 1;
tmp = bottom_gram;
while (tmp) {
if (!strcasecmp(((ZNotice_t *)(tmp->notice))->z_class_inst, instance_nm)
&& !strcasecmp(((ZNotice_t *)(tmp->notice))->z_class, class_nm))
{
fry = tmp;
tmp = tmp->above;
xdestroygram(x_dpy, fry->w, desc_context, fry);
done = 0;
} else {
tmp = tmp->above;
}
}
} while (!done);
}
else if (!strcmp(val, "cr")) {
strcpy(class_nm, notice->z_class);
strcpy(recip_nm, notice->z_recipient);
do {
done = 1;
tmp = bottom_gram;
while (tmp) {
if (!strcasecmp(((ZNotice_t *)(tmp->notice))->z_class, class_nm) &&
!strcasecmp(((ZNotice_t *)(tmp->notice))->z_recipient, recip_nm))
{
fry = tmp;
tmp = tmp->above;
xdestroygram(x_dpy, fry->w, desc_context, fry);
done = 0;
} else {
tmp = tmp->above;
}
}
} while (!done);
}
else if (!strcmp(val, "c")) {
strcpy(class_nm, notice->z_class);
do {
done = 1;
tmp = bottom_gram;
while (tmp) {
if (!strcasecmp(((ZNotice_t *)(tmp->notice))->z_class, class_nm)) {
fry = tmp;
tmp = tmp->above;
xdestroygram(x_dpy, fry->w, desc_context, fry);
done = 0;
} else {
tmp = tmp->above;
}
}
} while (!done);
}
else if (!strcmp(val, "all")) {
while (bottom_gram) {
xdestroygram(x_dpy, bottom_gram->w, desc_context, bottom_gram);
}
}
}
}
#endif
#endif /* X_DISPLAY_MISSING */