---
drw.c | 249 +++++++++++++++++++++++++++++++----------------------------------
drw.h | 34 ++++-----
util.c | 26 +++++--
util.h | 1 +
4 files changed, 157 insertions(+), 153 deletions(-)
diff --git a/drw.c b/drw.c
index eb3b3c3..f49200b 100644
--- a/drw.c
+++ b/drw.c
_AT_@ -9,7 +9,7 @@
#include "util.h"
#define UTF_INVALID 0xFFFD
-#define UTF_SIZ 4
+#define UTF_SIZ 4
static const unsigned char utfbyte[UTF_SIZ + 1] = {0x80, 0, 0xC0, 0xE0, 0xF0};
static const unsigned char utfmask[UTF_SIZ + 1] = {0xC0, 0x80, 0xE0, 0xF0, 0xF8};
_AT_@ -17,50 +17,55 @@ static const long utfmin[UTF_SIZ + 1] = { 0, 0, 0x80, 0x800, 0x10000
static const long utfmax[UTF_SIZ + 1] = {0x10FFFF, 0x7F, 0x7FF, 0xFFFF, 0x10FFFF};
static long
-utf8decodebyte(const char c, size_t *i) {
- for(*i = 0; *i < (UTF_SIZ + 1); ++(*i))
- if(((unsigned char)c & utfmask[*i]) == utfbyte[*i])
+utf8decodebyte(const char c, size_t *i)
+{
+ for (*i = 0; *i < (UTF_SIZ + 1); ++(*i))
+ if (((unsigned char)c & utfmask[*i]) == utfbyte[*i])
return (unsigned char)c & ~utfmask[*i];
return 0;
}
static size_t
-utf8validate(long *u, size_t i) {
- if(!BETWEEN(*u, utfmin[i], utfmax[i]) || BETWEEN(*u, 0xD800, 0xDFFF))
+utf8validate(long *u, size_t i)
+{
+ if (!BETWEEN(*u, utfmin[i], utfmax[i]) || BETWEEN(*u, 0xD800, 0xDFFF))
*u = UTF_INVALID;
- for(i = 1; *u > utfmax[i]; ++i)
+ for (i = 1; *u > utfmax[i]; ++i)
;
return i;
}
static size_t
-utf8decode(const char *c, long *u, size_t clen) {
+utf8decode(const char *c, long *u, size_t clen)
+{
size_t i, j, len, type;
long udecoded;
*u = UTF_INVALID;
- if(!clen)
+ if (!clen)
return 0;
udecoded = utf8decodebyte(c[0], &len);
- if(!BETWEEN(len, 1, UTF_SIZ))
+ if (!BETWEEN(len, 1, UTF_SIZ))
return 1;
- for(i = 1, j = 1; i < clen && j < len; ++i, ++j) {
+ for (i = 1, j = 1; i < clen && j < len; ++i, ++j) {
udecoded = (udecoded << 6) | utf8decodebyte(c[i], &type);
- if(type != 0)
+ if (type)
return j;
}
- if(j < len)
+ if (j < len)
return 0;
*u = udecoded;
utf8validate(u, len);
+
return len;
}
Drw *
-drw_create(Display *dpy, int screen, Window root, unsigned int w, unsigned int h) {
- Drw *drw = (Drw *)calloc(1, sizeof(Drw));
- if(!drw)
- return NULL;
+drw_create(Display *dpy, int screen, Window root, unsigned int w, unsigned int h)
+{
+ Drw *drw;
+
+ drw = ecalloc(1, sizeof(Drw));
drw->dpy = dpy;
drw->screen = screen;
drw->root = root;
_AT_@ -70,26 +75,27 @@ drw_create(Display *dpy, int screen, Window root, unsigned int w, unsigned int h
drw->gc = XCreateGC(dpy, root, 0, NULL);
drw->fontcount = 0;
XSetLineAttributes(dpy, drw->gc, 1, LineSolid, CapButt, JoinMiter);
+
return drw;
}
void
-drw_resize(Drw *drw, unsigned int w, unsigned int h) {
- if(!drw)
- return;
+drw_resize(Drw *drw, unsigned int w, unsigned int h)
+{
drw->w = w;
drw->h = h;
- if(drw->drawable != 0)
+ if (drw->drawable)
XFreePixmap(drw->dpy, drw->drawable);
drw->drawable = XCreatePixmap(drw->dpy, drw->root, w, h, DefaultDepth(drw->dpy, drw->screen));
}
void
-drw_free(Drw *drw) {
+drw_free(Drw *drw)
+{
size_t i;
- for (i = 0; i < drw->fontcount; i++) {
+
+ for (i = 0; i < drw->fontcount; i++)
drw_font_free(drw->fonts[i]);
- }
XFreePixmap(drw->dpy, drw->drawable);
XFreeGC(drw->dpy, drw->gc);
free(drw);
_AT_@ -99,14 +105,11 @@ drw_free(Drw *drw) {
* drw_font_create instead.
*/
static Fnt *
-drw_font_xcreate(Drw *drw, const char *fontname, FcPattern *fontpattern) {
+drw_font_xcreate(Drw *drw, const char *fontname, FcPattern *fontpattern)
+{
Fnt *font;
-
- if (!(fontname || fontpattern))
- die("No font specified.\n");
-
- if (!(font = (Fnt *)calloc(1, sizeof(Fnt))))
- return NULL;
+ XftFont *xfont = NULL;
+ FcPattern *pattern = NULL;
if (fontname) {
/* Using the pattern found at font->xfont->pattern does not yield same
_AT_@ -115,46 +118,50 @@ drw_font_xcreate(Drw *drw, const char *fontname, FcPattern *fontpattern) {
* behaviour whereas the former just results in
* missing-character-rectangles being drawn, at least with some fonts.
*/
- if (!(font->xfont = XftFontOpenName(drw->dpy, drw->screen, fontname)) ||
- !(font->pattern = FcNameParse((FcChar8 *) fontname))) {
- if (font->xfont) {
- XftFontClose(drw->dpy, font->xfont);
- font->xfont = NULL;
- }
+ if (!(xfont = XftFontOpenName(drw->dpy, drw->screen, fontname))) {
fprintf(stderr, "error, cannot load font: '%s'\n", fontname);
+ return NULL;
+ }
+ if (!(pattern = FcNameParse((FcChar8 *) fontname))) {
+ fprintf(stderr, "error, cannot load font: '%s'\n", fontname);
+ XftFontClose(drw->dpy, xfont);
+ return NULL;
}
} else if (fontpattern) {
- if (!(font->xfont = XftFontOpenPattern(drw->dpy, fontpattern))) {
+ if (!(xfont = XftFontOpenPattern(drw->dpy, fontpattern))) {
fprintf(stderr, "error, cannot load font pattern.\n");
- } else {
- font->pattern = NULL;
+ return NULL;
}
+ } else {
+ die("no font specified.\n");
}
- if (!font->xfont) {
- free(font);
- return NULL;
- }
-
- font->ascent = font->xfont->ascent;
- font->descent = font->xfont->descent;
+ font = ecalloc(1, sizeof(Fnt));
+ font->xfont = xfont;
+ font->pattern = pattern;
+ font->ascent = xfont->ascent;
+ font->descent = xfont->descent;
font->h = font->ascent + font->descent;
font->dpy = drw->dpy;
+
return font;
}
Fnt*
-drw_font_create(Drw *drw, const char *fontname) {
+drw_font_create(Drw *drw, const char *fontname)
+{
return drw_font_xcreate(drw, fontname, NULL);
}
void
-drw_load_fonts(Drw* drw, const char *fonts[], size_t fontcount) {
+drw_load_fonts(Drw* drw, const char *fonts[], size_t fontcount)
+{
size_t i;
Fnt *font;
+
for (i = 0; i < fontcount; i++) {
if (drw->fontcount >= DRW_FONT_CACHE_SIZE) {
- die("Font cache exhausted.\n");
+ die("font cache exhausted.\n");
} else if ((font = drw_font_xcreate(drw, fonts[i], NULL))) {
drw->fonts[drw->fontcount++] = font;
}
_AT_@ -162,68 +169,62 @@ drw_load_fonts(Drw* drw, const char *fonts[], size_t fontcount) {
}
void
-drw_font_free(Fnt *font) {
- if(!font)
+drw_font_free(Fnt *font)
+{
+ if (!font)
return;
- if(font->pattern)
+ if (font->pattern)
FcPatternDestroy(font->pattern);
XftFontClose(font->dpy, font->xfont);
free(font);
}
Clr *
-drw_clr_create(Drw *drw, const char *clrname) {
+drw_clr_create(Drw *drw, const char *clrname)
+{
Clr *clr;
- Colormap cmap;
- Visual *vis;
- if(!drw)
- return NULL;
- clr = (Clr *)calloc(1, sizeof(Clr));
- if(!clr)
- return NULL;
- cmap = DefaultColormap(drw->dpy, drw->screen);
- vis = DefaultVisual(drw->dpy, drw->screen);
- if(!XftColorAllocName(drw->dpy, vis, cmap, clrname, &clr->rgb))
+ clr = ecalloc(1, sizeof(Clr));
+ if (!XftColorAllocName(drw->dpy, DefaultVisual(drw->dpy, drw->screen),
+ DefaultColormap(drw->dpy, drw->screen),
+ clrname, &clr->rgb))
die("error, cannot allocate color '%s'\n", clrname);
clr->pix = clr->rgb.pixel;
+
return clr;
}
void
-drw_clr_free(Clr *clr) {
- if(clr)
- free(clr);
+drw_clr_free(Clr *clr)
+{
+ free(clr);
}
void
-drw_setscheme(Drw *drw, ClrScheme *scheme) {
- if(drw && scheme)
- drw->scheme = scheme;
+drw_setscheme(Drw *drw, ClrScheme *scheme)
+{
+ drw->scheme = scheme;
}
void
-drw_rect(Drw *drw, int x, int y, unsigned int w, unsigned int h, int filled, int empty, int invert) {
- int dx;
-
- if(!drw || !drw->fontcount || !drw->scheme)
+drw_rect(Drw *drw, int x, int y, unsigned int w, unsigned int h, int filled, int empty, int invert)
+{
+ if (!drw->scheme)
return;
XSetForeground(drw->dpy, drw->gc, invert ? drw->scheme->bg->pix : drw->scheme->fg->pix);
- dx = (drw->fonts[0]->ascent + drw->fonts[0]->descent + 2) / 4;
- if(filled)
- XFillRectangle(drw->dpy, drw->drawable, drw->gc, x+1, y+1, dx+1, dx+1);
- else if(empty)
- XDrawRectangle(drw->dpy, drw->drawable, drw->gc, x+1, y+1, dx, dx);
+ if (filled)
+ XFillRectangle(drw->dpy, drw->drawable, drw->gc, x, y, w + 1, h + 1);
+ else if (empty)
+ XDrawRectangle(drw->dpy, drw->drawable, drw->gc, x, y, w, h);
}
int
-drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, const char *text, int invert) {
+drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, const char *text, int invert)
+{
char buf[1024];
int tx, ty, th;
Extnts tex;
- Colormap cmap;
- Visual *vis;
- XftDraw *d;
+ XftDraw *d = NULL;
Fnt *curfont, *nextfont;
size_t i, len;
int utf8strlen, utf8charlen, render;
_AT_@ -235,23 +236,18 @@ drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, const char *tex
XftResult result;
int charexists = 0;
+ if (!drw->scheme || !drw->fontcount)
+ return 0;
+
if (!(render = x || y || w || h)) {
w = ~w;
- }
-
- if (!drw || !drw->scheme) {
- return 0;
- } else if (render) {
- XSetForeground(drw->dpy, drw->gc, invert ? drw->scheme->fg->pix : drw->scheme->bg->pix);
+ } else {
+ XSetForeground(drw->dpy, drw->gc, invert ?
+ drw->scheme->fg->pix : drw->scheme->bg->pix);
XFillRectangle(drw->dpy, drw->drawable, drw->gc, x, y, w, h);
- }
-
- if (!text || !drw->fontcount) {
- return 0;
- } else if (render) {
- cmap = DefaultColormap(drw->dpy, drw->screen);
- vis = DefaultVisual(drw->dpy, drw->screen);
- d = XftDrawCreate(drw->dpy, drw->drawable, vis, cmap);
+ d = XftDrawCreate(drw->dpy, drw->drawable,
+ DefaultVisual(drw->dpy, drw->screen),
+ DefaultColormap(drw->dpy, drw->screen));
}
curfont = drw->fonts[0];
_AT_@ -274,24 +270,23 @@ drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, const char *tex
}
}
- if (!charexists || (nextfont && nextfont != curfont)) {
+ if (!charexists || (nextfont && nextfont != curfont))
break;
- } else {
+ else
charexists = 0;
- }
}
if (utf8strlen) {
drw_font_getexts(curfont, utf8str, utf8strlen, &tex);
/* shorten text if necessary */
- for(len = MIN(utf8strlen, (sizeof buf) - 1); len && (tex.w > w - drw->fonts[0]->h || w < drw->fonts[0]->h); len--)
+ for (len = MIN(utf8strlen, (sizeof buf) - 1); len && (tex.w > w - drw->fonts[0]->h || w < drw->fonts[0]->h); len--)
drw_font_getexts(curfont, utf8str, len, &tex);
if (len) {
memcpy(buf, utf8str, len);
buf[len] = '\0';
- if(len < utf8strlen)
- for(i = len; i && i > len - 3; buf[--i] = '.');
+ if (len < utf8strlen)
+ for (i = len; i && i > len - 3; buf[--i] = '.');
if (render) {
th = curfont->ascent + curfont->descent;
_AT_@ -299,7 +294,6 @@ drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, const char *tex
tx = x + (h / 2);
XftDrawStringUtf8(d, invert ? &drw->scheme->bg->rgb : &drw->scheme->fg->rgb, curfont->xfont, tx, ty, (XftChar8 *)buf, len);
}
-
x += tex.w;
w -= tex.w;
}
_AT_@ -316,18 +310,16 @@ drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, const char *tex
*/
charexists = 1;
- if (drw->fontcount >= DRW_FONT_CACHE_SIZE) {
+ if (drw->fontcount >= DRW_FONT_CACHE_SIZE)
continue;
- }
fccharset = FcCharSetCreate();
FcCharSetAddChar(fccharset, utf8codepoint);
if (!drw->fonts[0]->pattern) {
/* Refer to the comment in drw_font_xcreate for more
- * information.
- */
- die("The first font in the cache must be loaded from a font string.\n");
+ * information. */
+ die("the first font in the cache must be loaded from a font string.\n");
}
fcpattern = FcPatternDuplicate(drw->fonts[0]->pattern);
_AT_@ -346,65 +338,60 @@ drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, const char *tex
if (curfont && XftCharExists(drw->dpy, curfont->xfont, utf8codepoint)) {
drw->fonts[drw->fontcount++] = curfont;
} else {
- if (curfont) {
- drw_font_free(curfont);
- }
+ drw_font_free(curfont);
curfont = drw->fonts[0];
}
}
}
}
-
- if (render) {
+ if (d)
XftDrawDestroy(d);
- }
return x;
}
void
-drw_map(Drw *drw, Window win, int x, int y, unsigned int w, unsigned int h) {
- if(!drw)
- return;
+drw_map(Drw *drw, Window win, int x, int y, unsigned int w, unsigned int h)
+{
XCopyArea(drw->dpy, drw->drawable, win, drw->gc, x, y, w, h, x, y);
XSync(drw->dpy, False);
}
-
void
-drw_font_getexts(Fnt *font, const char *text, unsigned int len, Extnts *tex) {
+drw_font_getexts(Fnt *font, const char *text, unsigned int len, Extnts *tex)
+{
XGlyphInfo ext;
- if(!font || !text)
- return;
XftTextExtentsUtf8(font->dpy, font->xfont, (XftChar8 *)text, len, &ext);
tex->h = font->h;
tex->w = ext.xOff;
}
unsigned int
-drw_font_getexts_width(Fnt *font, const char *text, unsigned int len) {
+drw_font_getexts_width(Fnt *font, const char *text, unsigned int len)
+{
Extnts tex;
- if(!font)
- return -1;
drw_font_getexts(font, text, len, &tex);
+
return tex.w;
}
Cur *
-drw_cur_create(Drw *drw, int shape) {
- Cur *cur = (Cur *)calloc(1, sizeof(Cur));
+drw_cur_create(Drw *drw, int shape)
+{
+ Cur *cur;
- if(!drw || !cur)
- return NULL;
+ cur = ecalloc(1, sizeof(Cur));
cur->cursor = XCreateFontCursor(drw->dpy, shape);
+
return cur;
}
void
-drw_cur_free(Drw *drw, Cur *cursor) {
- if(!drw || !cursor)
+drw_cur_free(Drw *drw, Cur *cursor)
+{
+ if (!cursor)
return;
XFreeCursor(drw->dpy, cursor->cursor);
free(cursor);
diff --git a/drw.h b/drw.h
index 536171b..e3b8515 100644
--- a/drw.h
+++ b/drw.h
_AT_@ -43,32 +43,32 @@ typedef struct {
} Extnts;
/* Drawable abstraction */
-Drw *drw_create(Display *dpy, int screen, Window win, unsigned int w, unsigned int h);
-void drw_resize(Drw *drw, unsigned int w, unsigned int h);
-void drw_free(Drw *drw);
+Drw *drw_create(Display *, int, Window, unsigned int, unsigned int);
+void drw_resize(Drw *, unsigned int, unsigned int);
+void drw_free(Drw *);
/* Fnt abstraction */
-Fnt *drw_font_create(Drw *drw, const char *fontname);
-void drw_load_fonts(Drw* drw, const char *fonts[], size_t fontcount);
-void drw_font_free(Fnt *font);
-void drw_font_getexts(Fnt *font, const char *text, unsigned int len, Extnts *extnts);
-unsigned int drw_font_getexts_width(Fnt *font, const char *text, unsigned int len);
+Fnt *drw_font_create(Drw *, const char *);
+void drw_load_fonts(Drw *, const char *[], size_t);
+void drw_font_free(Fnt *);
+void drw_font_getexts(Fnt *, const char *, unsigned int, Extnts *);
+unsigned int drw_font_getexts_width(Fnt *, const char *, unsigned int);
/* Colour abstraction */
-Clr *drw_clr_create(Drw *drw, const char *clrname);
-void drw_clr_free(Clr *clr);
+Clr *drw_clr_create(Drw *, const char *);
+void drw_clr_free(Clr *);
/* Cursor abstraction */
-Cur *drw_cur_create(Drw *drw, int shape);
-void drw_cur_free(Drw *drw, Cur *cursor);
+Cur *drw_cur_create(Drw *, int);
+void drw_cur_free(Drw *, Cur *);
/* Drawing context manipulation */
-void drw_setfont(Drw *drw, Fnt *font);
-void drw_setscheme(Drw *drw, ClrScheme *scheme);
+void drw_setfont(Drw *, Fnt *);
+void drw_setscheme(Drw *, ClrScheme *);
/* Drawing functions */
-void drw_rect(Drw *drw, int x, int y, unsigned int w, unsigned int h, int filled, int empty, int invert);
-int drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, const char *text, int invert);
+void drw_rect(Drw *, int, int, unsigned int, unsigned int, int, int, int);
+int drw_text(Drw *, int, int, unsigned int, unsigned int, const char *, int);
/* Map functions */
-void drw_map(Drw *drw, Window win, int x, int y, unsigned int w, unsigned int h);
+void drw_map(Drw *, Window, int, int, unsigned int, unsigned int);
diff --git a/util.c b/util.c
index 51acd1a..6b703e9 100644
--- a/util.c
+++ b/util.c
_AT_@ -2,16 +2,32 @@
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
+#include <string.h>
#include "util.h"
+void *
+ecalloc(size_t nmemb, size_t size)
+{
+ void *p;
+
+ if (!(p = calloc(nmemb, size)))
+ perror(NULL);
+ return p;
+}
+
void
-die(const char *errstr, ...) {
+die(const char *fmt, ...) {
va_list ap;
- va_start(ap, errstr);
- vfprintf(stderr, errstr, ap);
+ va_start(ap, fmt);
+ vfprintf(stderr, fmt, ap);
va_end(ap);
- exit(EXIT_FAILURE);
+
+ if (fmt[0] && fmt[strlen(fmt)-1] == ':') {
+ fputc(' ', stderr);
+ perror(NULL);
+ }
+
+ exit(1);
}
-
diff --git a/util.h b/util.h
index f7ce721..cded043 100644
--- a/util.h
+++ b/util.h
_AT_@ -5,3 +5,4 @@
#define BETWEEN(X, A, B) ((A) <= (X) && (X) <= (B))
void die(const char *errstr, ...);
+void *ecalloc(size_t, size_t);
--
2.7.3
Received on Sun May 22 2016 - 22:29:18 CEST
This archive was generated by hypermail 2.3.0 : Sun May 22 2016 - 22:36:16 CEST