diff options
Diffstat (limited to 'drw.c')
| -rw-r--r-- | drw.c | 396 |
1 files changed, 201 insertions, 195 deletions
@@ -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}; @@ -17,50 +17,54 @@ 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 = ecalloc(1, sizeof(Drw)); + drw->dpy = dpy; drw->screen = screen; drw->root = root; @@ -68,166 +72,178 @@ drw_create(Display *dpy, int screen, Window root, unsigned int w, unsigned int h drw->h = h; drw->drawable = XCreatePixmap(dpy, root, w, h, DefaultDepth(dpy, screen)); 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) +drw_resize(Drw *drw, unsigned int w, unsigned int h) +{ + if (!drw) return; + 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) { - size_t i; - - /* This was breaking the program when I tried to bring window up second time - Too lazy to dig deeper right now,*\ - \*or (i = 0; i < drw->fontcount; i++) { - drw_font_free(drw->fonts[i]); - }*/ +drw_free(Drw *drw) +{ XFreePixmap(drw->dpy, drw->drawable); XFreeGC(drw->dpy, drw->gc); free(drw); } /* This function is an implementation detail. Library users should use - * drw_font_create instead. + * drw_fontset_create instead. */ static Fnt * -drw_font_xcreate(Drw *drw, const char *fontname, FcPattern *fontpattern) { +xfont_create(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 - * the same substitution results as using the pattern returned by + /* Using the pattern found at font->xfont->pattern does not yield the + * same substitution results as using the pattern returned by * FcNameParse; using the latter results in the desired fallback - * 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; - } - fprintf(stderr, "error, cannot load font: '%s'\n", fontname); + * behaviour whereas the former just results in missing-character + * rectangles being drawn, at least with some fonts. */ + if (!(xfont = XftFontOpenName(drw->dpy, drw->screen, fontname))) { + fprintf(stderr, "error, cannot load font from name: '%s'\n", fontname); + return NULL; + } + if (!(pattern = FcNameParse((FcChar8 *) fontname))) { + fprintf(stderr, "error, cannot parse font name to pattern: '%s'\n", fontname); + XftFontClose(drw->dpy, xfont); + return NULL; } } else if (fontpattern) { - if (!(font->xfont = XftFontOpenPattern(drw->dpy, fontpattern))) { - fprintf(stderr, "error, cannot load font pattern.\n"); - } else { - font->pattern = NULL; + if (!(xfont = XftFontOpenPattern(drw->dpy, fontpattern))) { + fprintf(stderr, "error, cannot load font from pattern.\n"); + return NULL; } + } else { + die("no font specified."); } - if (!font->xfont) { - free(font); - return NULL; - } - - font->ascent = font->xfont->ascent; - font->descent = font->xfont->descent; - font->h = font->ascent + font->descent; + font = ecalloc(1, sizeof(Fnt)); + font->xfont = xfont; + font->pattern = pattern; + font->h = xfont->ascent + xfont->descent; font->dpy = drw->dpy; + return font; } -Fnt* -drw_font_create(Drw *drw, const char *fontname) { - return drw_font_xcreate(drw, fontname, NULL); +static void +xfont_free(Fnt *font) +{ + if (!font) + return; + if (font->pattern) + FcPatternDestroy(font->pattern); + XftFontClose(font->dpy, font->xfont); + free(font); } -void -drw_load_fonts(Drw* drw, const char *fonts[], size_t fontcount) { +Fnt* +drw_fontset_create(Drw* drw, const char *fonts[], size_t fontcount) +{ + Fnt *cur, *ret = NULL; size_t i; - Fnt *font; - for (i = 0; i < fontcount; i++) { - if (drw->fontcount >= DRW_FONT_CACHE_SIZE) { - die("Font cache exhausted.\n"); - } else if ((font = drw_font_xcreate(drw, fonts[i], NULL))) { - drw->fonts[drw->fontcount++] = font; + if (!drw || !fonts) + return NULL; + + for (i = 1; i <= fontcount; i++) { + if ((cur = xfont_create(drw, fonts[fontcount - i], NULL))) { + cur->next = ret; + ret = cur; } } + return (drw->fonts = ret); +} + +void +drw_fontset_free(Fnt *font) +{ + if (font) { + drw_fontset_free(font->next); + xfont_free(font); + } } void -drw_font_free(Fnt *font) { - if(!font) +drw_clr_create(Drw *drw, Clr *dest, const char *clrname) +{ + if (!drw || !dest || !clrname) return; - if(font->pattern) - FcPatternDestroy(font->pattern); - XftFontClose(font->dpy, font->xfont); - free(font); + + if (!XftColorAllocName(drw->dpy, DefaultVisual(drw->dpy, drw->screen), + DefaultColormap(drw->dpy, drw->screen), + clrname, dest)) + die("error, cannot allocate color '%s'", clrname); } +/* Wrapper to create color schemes. The caller has to call free(3) on the + * returned color scheme when done using it. */ Clr * -drw_clr_create(Drw *drw, const char *clrname) { - Clr *clr; - Colormap cmap; - Visual *vis; +drw_scm_create(Drw *drw, const char *clrnames[], size_t clrcount) +{ + size_t i; + Clr *ret; - if(!drw) - return NULL; - clr = (Clr *)calloc(1, sizeof(Clr)); - if(!clr) + /* need at least two colors for a scheme */ + if (!drw || !clrnames || clrcount < 2 || !(ret = ecalloc(clrcount, sizeof(XftColor)))) return NULL; - cmap = DefaultColormap(drw->dpy, drw->screen); - vis = DefaultVisual(drw->dpy, drw->screen); - if(!XftColorAllocName(drw->dpy, vis, cmap, clrname, &clr->rgb)) - die("error, cannot allocate color '%s'\n", clrname); - clr->pix = clr->rgb.pixel; - return clr; + + for (i = 0; i < clrcount; i++) + drw_clr_create(drw, &ret[i], clrnames[i]); + return ret; } void -drw_clr_free(Clr *clr) { - free(clr); +drw_setfontset(Drw *drw, Fnt *set) +{ + if (drw) + drw->fonts = set; } void -drw_setscheme(Drw *drw, ClrScheme *scheme) { - if(!drw) - return; - drw->scheme = scheme; +drw_setscheme(Drw *drw, Clr *scm) +{ + if (drw) + drw->scheme = scm; } void -drw_rect(Drw *drw, int x, int y, unsigned int w, unsigned int h, int filled, int empty, int invert) { - if(!drw || !drw->scheme) +drw_rect(Drw *drw, int x, int y, unsigned int w, unsigned int h, int filled, int invert) +{ + if (!drw || !drw->scheme) return; - XSetForeground(drw->dpy, drw->gc, invert ? drw->scheme->bg->pix : drw->scheme->fg->pix); - 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); + XSetForeground(drw->dpy, drw->gc, invert ? drw->scheme[ColBg].pixel : drw->scheme[ColFg].pixel); + if (filled) + XFillRectangle(drw->dpy, drw->drawable, drw->gc, x, y, w, h); + else + XDrawRectangle(drw->dpy, drw->drawable, drw->gc, x, y, w - 1, h - 1); } 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, unsigned int lpad, const char *text, int invert) +{ char buf[1024]; - int tx, ty, th; - Extnts tex; - Colormap cmap; - Visual *vis; - XftDraw *d; - Fnt *curfont, *nextfont; + int ty; + unsigned int ew; + XftDraw *d = NULL; + Fnt *usedfont, *curfont, *nextfont; size_t i, len; - int utf8strlen, utf8charlen, render; + int utf8strlen, utf8charlen, render = x || y || w || h; long utf8codepoint = 0; const char *utf8str; FcCharSet *fccharset; @@ -236,73 +252,67 @@ drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, const char *tex XftResult result; int charexists = 0; - if (!(render = x || y || w || h)) { - w = ~w; - } - - if (!drw || !drw->scheme) { + if (!drw || (render && !drw->scheme) || !text || !drw->fonts) return 0; - } else if (render) { - 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); + if (!render) { + w = ~w; + } else { + XSetForeground(drw->dpy, drw->gc, drw->scheme[invert ? ColFg : ColBg].pixel); + XFillRectangle(drw->dpy, drw->drawable, drw->gc, x, y, w, h); + d = XftDrawCreate(drw->dpy, drw->drawable, + DefaultVisual(drw->dpy, drw->screen), + DefaultColormap(drw->dpy, drw->screen)); + x += lpad; + w -= lpad; } - curfont = drw->fonts[0]; + usedfont = drw->fonts; while (1) { utf8strlen = 0; utf8str = text; nextfont = NULL; while (*text) { utf8charlen = utf8decode(text, &utf8codepoint, UTF_SIZ); - for (i = 0; i < drw->fontcount; i++) { - charexists = charexists || XftCharExists(drw->dpy, drw->fonts[i]->xfont, utf8codepoint); + for (curfont = drw->fonts; curfont; curfont = curfont->next) { + charexists = charexists || XftCharExists(drw->dpy, curfont->xfont, utf8codepoint); if (charexists) { - if (drw->fonts[i] == curfont) { + if (curfont == usedfont) { utf8strlen += utf8charlen; text += utf8charlen; } else { - nextfont = drw->fonts[i]; + nextfont = curfont; } break; } } - if (!charexists || (nextfont && nextfont != curfont)) { + if (!charexists || nextfont) break; - } else { + else charexists = 0; - } } if (utf8strlen) { - drw_font_getexts(curfont, utf8str, utf8strlen, &tex); + drw_font_getexts(usedfont, utf8str, utf8strlen, &ew, NULL); /* 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--) - drw_font_getexts(curfont, utf8str, len, &tex); + for (len = MIN(utf8strlen, sizeof(buf) - 1); len && ew > w; len--) + drw_font_getexts(usedfont, utf8str, len, &ew, NULL); 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] = '.') + ; /* NOP */ if (render) { - th = curfont->ascent + curfont->descent; - ty = y + (h / 2) - (th / 2) + curfont->ascent; - tx = x + (h / 2); - XftDrawStringUtf8(d, invert ? &drw->scheme->bg->rgb : &drw->scheme->fg->rgb, curfont->xfont, tx, ty, (XftChar8 *)buf, len); + ty = y + (h - usedfont->h) / 2 + usedfont->xfont->ascent; + XftDrawStringUtf8(d, &drw->scheme[invert ? ColBg : ColFg], + usedfont->xfont, x, ty, (XftChar8 *)buf, len); } - - x += tex.w; - w -= tex.w; + x += ew; + w -= ew; } } @@ -310,28 +320,21 @@ drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, const char *tex break; } else if (nextfont) { charexists = 0; - curfont = nextfont; + usedfont = nextfont; } else { /* Regardless of whether or not a fallback font is found, the - * character must be drawn. - */ + * character must be drawn. */ charexists = 1; - 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"); + if (!drw->fonts->pattern) { + /* Refer to the comment in xfont_create for more information. */ + die("the first font in the cache must be loaded from a font string."); } - fcpattern = FcPatternDuplicate(drw->fonts[0]->pattern); + fcpattern = FcPatternDuplicate(drw->fonts->pattern); FcPatternAddCharSet(fcpattern, FC_CHARSET, fccharset); FcPatternAddBool(fcpattern, FC_SCALABLE, FcTrue); @@ -343,73 +346,76 @@ drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, const char *tex FcPatternDestroy(fcpattern); if (match) { - curfont = drw_font_xcreate(drw, NULL, match); - if (curfont && XftCharExists(drw->dpy, curfont->xfont, utf8codepoint)) { - drw->fonts[drw->fontcount++] = curfont; + usedfont = xfont_create(drw, NULL, match); + if (usedfont && XftCharExists(drw->dpy, usedfont->xfont, utf8codepoint)) { + for (curfont = drw->fonts; curfont->next; curfont = curfont->next) + ; /* NOP */ + curfont->next = usedfont; } else { - if (curfont) { - drw_font_free(curfont); - } - curfont = drw->fonts[0]; + xfont_free(usedfont); + usedfont = drw->fonts; } } } } - - if (render) { + if (d) XftDrawDestroy(d); - } - return x; + return x + (render ? w : 0); } void -drw_map(Drw *drw, Window win, int x, int y, unsigned int w, unsigned int h) { - if(!drw) +drw_map(Drw *drw, Window win, int x, int y, unsigned int w, unsigned int h) +{ + if (!drw) return; + XCopyArea(drw->dpy, drw->drawable, win, drw->gc, x, y, w, h, x, y); XSync(drw->dpy, False); } +unsigned int +drw_fontset_getwidth(Drw *drw, const char *text) +{ + if (!drw || !drw->fonts || !text) + return 0; + return drw_text(drw, 0, 0, 0, 0, 0, text, 0); +} 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, unsigned int *w, unsigned int *h) +{ XGlyphInfo ext; - if(!font || !text) + 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) { - Extnts tex; - if(!font) - return -1; - drw_font_getexts(font, text, len, &tex); - return tex.w; + XftTextExtentsUtf8(font->dpy, font->xfont, (XftChar8 *)text, len, &ext); + if (w) + *w = ext.xOff; + if (h) + *h = font->h; } Cur * -drw_cur_create(Drw *drw, int shape) { +drw_cur_create(Drw *drw, int shape) +{ Cur *cur; - if(!drw) - return NULL; - cur = (Cur *)calloc(1, sizeof(Cur)); - if (!cur) + if (!drw || !(cur = ecalloc(1, sizeof(Cur)))) return NULL; + 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); } |