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Added support for fallback fonts.

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Also changed license.
This commit is contained in:
phillbush
2020-07-29 00:51:08 -03:00
parent 675a2008a6
commit cdeaefaaa2
5 changed files with 277 additions and 131 deletions
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365
xmenu.c
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@@ -1,3 +1,4 @@
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <stdio.h>
@@ -23,6 +24,7 @@
static void parseposition(const char *optarg);
/* initializers, and their helper routines */
static void parsefonts(const char *s);
static void ealloccolor(const char *s, XftColor *color);
static void initresources(void);
static void initdc(void);
@@ -38,6 +40,13 @@ static struct Menu *parsestdin(void);
/* image loader */
static Imlib_Image loadicon(const char *file);
/* utf8 utils */
static FcChar32 getnextutf8char(const char *s, const char **end_ret);
/* pixmap drawers */
static int drawtext(XftDraw *draw, XftColor *color, int x, int y, unsigned h, const char *text);
static void drawitems(struct Menu *menu);
/* structure setters, and their helper routines */
static void setupitems(struct Menu *menu);
static void setupmenupos(struct Menu *menu);
@@ -49,14 +58,16 @@ static void grabkeyboard(void);
/* window drawers and mappers */
static void mapmenu(struct Menu *currmenu);
static void drawseparator(struct Menu *menu, struct Item *item);
static void drawitem(struct Menu *menu, struct Item *item, XftColor *color);
static void drawmenu(struct Menu *currmenu);
static void copypixmaps(struct Menu *currmenu);
/* main event loop, and its helper routines */
/* getters */
static struct Menu *getmenu(struct Menu *currmenu, Window win);
static struct Item *getitem(struct Menu *menu, int y);
/* cycle through items */
static struct Item *itemcycle(struct Menu *currmenu, int direction);
/* main event loop */
static void run(struct Menu *currmenu);
/* cleaners */
@@ -202,6 +213,40 @@ error:
errx(1, "improper position: %s", optarg);
}
/* parse color string */
static void
parsefonts(const char *s)
{
const char *p;
char buf[1024];
size_t nfont = 0;
dc.nfonts = 1;
for (p = s; *p; p++)
if (*p == ',')
dc.nfonts++;
if ((dc.fonts = calloc(dc.nfonts, sizeof *dc.fonts)) == NULL)
err(1, "calloc");
p = s;
while (*p != '\0') {
size_t i;
i = 0;
while (isspace(*p))
p++;
while (*p != '\0' && *p != ',') {
buf[i++] = *p++;
}
if (*p == ',')
p++;
buf[i] = '\0';
if ((dc.fonts[nfont++] = XftFontOpenName(dpy, screen, buf)) == NULL)
errx(1, "cannot load font");
}
}
/* get color from color string */
static void
ealloccolor(const char *s, XftColor *color)
@@ -271,9 +316,8 @@ initdc(void)
ealloccolor(config.separator_color, &dc.separator);
ealloccolor(config.border_color, &dc.border);
/* try to get font */
if ((dc.font = XftFontOpenName(dpy, screen, config.font)) == NULL)
errx(1, "cannot load font");
/* parse fonts */
parsefonts(config.font);
/* create common GC */
dc.gc = XCreateGC(dpy, rootwin, 0, NULL);
@@ -507,6 +551,182 @@ loadicon(const char *file)
return icon;
}
/* get next utf8 char from s return its codepoint and set next_ret to pointer to next character */
static FcChar32
getnextutf8char(const char *s, const char **next_ret)
{
/* */
static const unsigned char utfbyte[] = {0x80, 0x00, 0xC0, 0xE0, 0xF0};
/* */
static const unsigned char utfmask[] = {0xC0, 0x80, 0xE0, 0xF0, 0xF8};
/* 0xFFFD is the replacement character, used to represent unknown characters */
static const FcChar32 utfmin[] = {0, 0x00, 0x80, 0x800, 0x10000};
static const FcChar32 utfmax[] = {0, 0x7F, 0x7FF, 0xFFFF, 0x10FFFF};
static const FcChar32 unknown = 0xFFFD;
FcChar32 ucode; /* FcChar32 type holds 32 bits */
size_t usize = 0; /* n' of bytes of the utf8 character */
size_t i;
*next_ret = s+1;
/* get code of first byte of utf8 character */
for (i = 0; i < sizeof utfmask; i++) {
if (((unsigned char)*s & utfmask[i]) == utfbyte[i]) {
usize = i;
ucode = (unsigned char)*s & ~utfmask[i];
break;
}
}
/* if first byte is a continuation byte or is not allowed, return unknown */
if (i == sizeof utfmask || usize == 0)
return unknown;
/* check the other usize-1 bytes */
s++;
for (i = 1; i < usize; i++) {
*next_ret = s+1;
/* if byte is EOS or is not a continuation byte, return unknown */
if (*s == '\0' || ((unsigned char)*s & utfmask[0]) != utfbyte[0])
return unknown;
/* 6 is the number of relevant bits in the continuation byte */
ucode = (ucode << 6) | ((unsigned char)*s & ~utfmask[0]);
s++;
}
/* check if ucode is invalid or in utf-16 surrogate halves */
if (!BETWEEN(ucode, utfmin[usize], utfmax[usize])
|| BETWEEN (ucode, 0xD800, 0xDFFF))
return unknown;
return ucode;
}
/* draw text into XftDraw */
static int
drawtext(XftDraw *draw, XftColor *color, int x, int y, unsigned h, const char *text)
{
const char *s, *nexts;
FcChar32 ucode;
XftFont *currfont;
int textlen = 0;
s = text;
while (*s) {
XGlyphInfo ext;
int charexists;
size_t len;
size_t i;
charexists = 0;
ucode = getnextutf8char(s, &nexts);
for (i = 0; i < dc.nfonts; i++) {
charexists = XftCharExists(dpy, dc.fonts[i], ucode);
if (charexists)
break;
}
if (charexists)
currfont = dc.fonts[i];
len = nexts - s;
XftTextExtentsUtf8(dpy, currfont, (XftChar8 *)s,
len, &ext);
textlen += ext.xOff;
if (draw) {
int texty;
texty = y + (h + currfont->ascent) / 2;
XftDrawStringUtf8(draw, color, currfont, x, texty,
(XftChar8 *)s, len);
x += ext.xOff;
}
s = nexts;
}
return textlen;
}
/* draw pixmap for the selected and unselected version of each item on menu */
static void
drawitems(struct Menu *menu)
{
struct Item *item;
for (item = menu->list; item != NULL; item = item->next) {
XftDraw *dsel, *dunsel;
int x, y;
item->unsel = XCreatePixmap(dpy, menu->win, menu->w, item->h,
DefaultDepth(dpy, screen));
XSetForeground(dpy, dc.gc, dc.normal[ColorBG].pixel);
XFillRectangle(dpy, item->unsel, dc.gc, 0, 0, menu->w, item->h);
if (item->label == NULL) { /* item is separator */
y = item->h/2;
XSetForeground(dpy, dc.gc, dc.separator.pixel);
XDrawLine(dpy, item->unsel, dc.gc, config.horzpadding, y,
menu->w - config.horzpadding, y);
item->sel = item->unsel;
} else {
item->sel = XCreatePixmap(dpy, menu->win, menu->w, item->h,
DefaultDepth(dpy, screen));
XSetForeground(dpy, dc.gc, dc.selected[ColorBG].pixel);
XFillRectangle(dpy, item->sel, dc.gc, 0, 0, menu->w, item->h);
/* draw text */
x = config.horzpadding;
x += (iflag) ? 0 : config.horzpadding + config.iconsize;
dsel = XftDrawCreate(dpy, item->sel, visual, colormap);
dunsel = XftDrawCreate(dpy, item->unsel, visual, colormap);
XSetForeground(dpy, dc.gc, dc.selected[ColorFG].pixel);
drawtext(dsel, &dc.selected[ColorFG], x, 0, item->h, item->label);
XSetForeground(dpy, dc.gc, dc.normal[ColorFG].pixel);
drawtext(dunsel, &dc.normal[ColorFG], x, 0, item->h, item->label);
XftDrawDestroy(dsel);
XftDrawDestroy(dunsel);
/* draw triangle */
if (item->submenu != NULL) {
x = menu->w - config.triangle_width - config.horzpadding;
y = (item->h - config.triangle_height + 1) / 2;
XPoint triangle[] = {
{x, y},
{x + config.triangle_width, y + config.triangle_height/2},
{x, y + config.triangle_height},
{x, y}
};
XSetForeground(dpy, dc.gc, dc.selected[ColorFG].pixel);
XFillPolygon(dpy, item->sel, dc.gc, triangle, LEN(triangle),
Convex, CoordModeOrigin);
XSetForeground(dpy, dc.gc, dc.normal[ColorFG].pixel);
XFillPolygon(dpy, item->unsel, dc.gc, triangle, LEN(triangle),
Convex, CoordModeOrigin);
}
/* draw icon */
if (item->file != NULL && !iflag) {
item->icon = loadicon(item->file);
imlib_context_set_drawable(item->sel);
imlib_context_set_image(item->icon);
imlib_render_image_on_drawable(config.horzpadding, config.iconpadding);
imlib_context_set_drawable(item->unsel);
imlib_context_set_image(item->icon);
imlib_render_image_on_drawable(config.horzpadding, config.iconpadding);
}
}
}
}
/* setup the height, width and icon of the items of a menu */
static void
setupitems(struct Menu *menu)
@@ -526,7 +746,7 @@ setupitems(struct Menu *menu)
menu->h += item->h;
/* get length of item->label rendered in the font */
XftTextExtentsUtf8(dpy, dc.font, (XftChar8 *)item->label,
XftTextExtentsUtf8(dpy, dc.fonts[0], (XftChar8 *)item->label,
item->labellen, &ext);
/*
@@ -544,31 +764,6 @@ setupitems(struct Menu *menu)
itemwidth = ext.xOff + config.triangle_width + config.horzpadding * 3;
itemwidth += (iflag) ? 0 : config.iconsize + config.horzpadding;
menu->w = MAX(menu->w, itemwidth);
/* create icon */
if (item->file != NULL && !iflag) {
item->icon = loadicon(item->file);
item->sel = XCreatePixmap(dpy, menu->win,
config.iconsize, config.iconsize,
DefaultDepth(dpy, screen));
XSetForeground(dpy, dc.gc, dc.selected[ColorBG].pixel);
XFillRectangle(dpy, item->sel, dc.gc, 0, 0,
config.iconsize, config.iconsize);
imlib_context_set_drawable(item->sel);
imlib_context_set_image(item->icon);
imlib_render_image_on_drawable(0, 0);
item->unsel = XCreatePixmap(dpy, menu->win,
config.iconsize, config.iconsize,
DefaultDepth(dpy, screen));
XSetForeground(dpy, dc.gc, dc.normal[ColorBG].pixel);
XFillRectangle(dpy, item->unsel, dc.gc, 0, 0,
config.iconsize, config.iconsize);
imlib_context_set_drawable(item->unsel);
imlib_context_set_image(item->icon);
imlib_render_image_on_drawable(0, 0);
}
}
}
@@ -617,6 +812,7 @@ setupmenu(struct Menu *menu, XClassHint *classh)
/* setup size and position of menus */
setupitems(menu);
drawitems(menu);
setupmenupos(menu);
/* update menu geometry */
@@ -641,11 +837,6 @@ setupmenu(struct Menu *menu, XClassHint *classh)
sizeh.min_height = sizeh.max_height = menu->h;
XSetWMProperties(dpy, menu->win, &wintitle, NULL, NULL, 0, &sizeh, NULL, classh);
/* create pixmap and XftDraw */
menu->pixmap = XCreatePixmap(dpy, menu->win, menu->w, menu->h,
DefaultDepth(dpy, screen));
menu->draw = XftDrawCreate(dpy, menu->pixmap, visual, colormap);
/* set WM protocols and ewmh window properties */
XSetWMProtocols(dpy, menu->win, &wmdelete, 1);
XChangeProperty(dpy, menu->win, netatom[NetWMName], utf8string, 8,
@@ -753,91 +944,22 @@ mapmenu(struct Menu *currmenu)
prevmenu = currmenu;
}
/* draw separator item */
/* copy pixmaps of items of the current menu and of its ancestors into menu window */
static void
drawseparator(struct Menu *menu, struct Item *item)
{
int y;
y = item->y + item->h/2;
XSetForeground(dpy, dc.gc, dc.separator.pixel);
XDrawLine(dpy, menu->pixmap, dc.gc, config.horzpadding, y,
menu->w - config.horzpadding, y);
}
/* draw regular item */
static void
drawitem(struct Menu *menu, struct Item *item, XftColor *color)
{
int x, y;
x = config.horzpadding;
x += (iflag) ? 0 : config.horzpadding + config.iconsize;
y = item->y + (item->h + dc.font->ascent) / 2;
XSetForeground(dpy, dc.gc, color[ColorFG].pixel);
XftDrawStringUtf8(menu->draw, &color[ColorFG], dc.font,
x, y, (XftChar8 *)item->label, item->labellen);
/* draw triangle, if item contains a submenu */
if (item->submenu != NULL) {
x = menu->w - config.triangle_width - config.horzpadding;
y = item->y + (item->h - config.triangle_height + 1) / 2;
XPoint triangle[] = {
{x, y},
{x + config.triangle_width, y + config.triangle_height/2},
{x, y + config.triangle_height},
{x, y}
};
XFillPolygon(dpy, menu->pixmap, dc.gc, triangle, LEN(triangle),
Convex, CoordModeOrigin);
}
/* draw icon */
if (item->icon != NULL) {
x = config.horzpadding;
y = item->y + config.iconpadding;
if (color == dc.selected)
XCopyArea(dpy, item->sel, menu->pixmap, dc.gc, 0, 0,
menu->w, menu->h, x, y);
else
XCopyArea(dpy, item->unsel, menu->pixmap, dc.gc, 0, 0,
menu->w, menu->h, x, y);
}
}
/* draw items of the current menu and of its ancestors */
static void
drawmenu(struct Menu *currmenu)
copypixmaps(struct Menu *currmenu)
{
struct Menu *menu;
struct Item *item;
for (menu = currmenu; menu != NULL; menu = menu->parent) {
for (item = menu->list; item != NULL; item = item->next) {
XftColor *color;
/* determine item color */
if (item == menu->selected && item->label != NULL)
color = dc.selected;
if (item == menu->selected)
XCopyArea(dpy, item->sel, menu->win, dc.gc, 0, 0,
menu->w, item->h, 0, item->y);
else
color = dc.normal;
/* draw item box */
XSetForeground(dpy, dc.gc, color[ColorBG].pixel);
XFillRectangle(dpy, menu->pixmap, dc.gc, 0, item->y,
menu->w, item->h);
if (item->label == NULL) /* item is a separator */
drawseparator(menu, item);
else /* item is a regular item */
drawitem(menu, item, color);
XCopyArea(dpy, item->unsel, menu->win, dc.gc, 0, 0,
menu->w, item->h, 0, item->y);
}
XCopyArea(dpy, menu->pixmap, menu->win, dc.gc, 0, 0,
menu->w, menu->h, 0, 0);
}
}
@@ -927,7 +1049,7 @@ run(struct Menu *currmenu)
switch(ev.type) {
case Expose:
if (ev.xexpose.count == 0)
drawmenu(currmenu);
copypixmaps(currmenu);
break;
case MotionNotify:
menu = getmenu(currmenu, ev.xbutton.window);
@@ -943,7 +1065,7 @@ run(struct Menu *currmenu)
currmenu = menu;
}
mapmenu(currmenu);
drawmenu(currmenu);
copypixmaps(currmenu);
break;
case ButtonRelease:
menu = getmenu(currmenu, ev.xbutton.window);
@@ -961,7 +1083,7 @@ selectitem:
}
mapmenu(currmenu);
currmenu->selected = currmenu->list;
drawmenu(currmenu);
copypixmaps(currmenu);
break;
case ButtonPress:
menu = getmenu(currmenu, ev.xbutton.window);
@@ -997,12 +1119,12 @@ selectitem:
} else
break;
currmenu->selected = item;
drawmenu(currmenu);
copypixmaps(currmenu);
break;
case LeaveNotify:
previtem = NULL;
currmenu->selected = NULL;
drawmenu(currmenu);
copypixmaps(currmenu);
break;
case ConfigureNotify:
menu = getmenu(currmenu, ev.xconfigure.window);
@@ -1037,6 +1159,9 @@ cleanmenu(struct Menu *menu)
if (item->submenu != NULL)
cleanmenu(item->submenu);
tmp = item;
XFreePixmap(dpy, item->unsel);
if (tmp->label != NULL)
XFreePixmap(dpy, item->sel);
if (tmp->label != tmp->output)
free(tmp->label);
free(tmp->output);
@@ -1051,8 +1176,6 @@ cleanmenu(struct Menu *menu)
free(tmp);
}
XFreePixmap(dpy, menu->pixmap);
XftDrawDestroy(menu->draw);
XDestroyWindow(dpy, menu->win);
free(menu);
}