diff options
| -rw-r--r-- | drw.c | 165 | ||||
| -rw-r--r-- | drw.h | 34 |
2 files changed, 106 insertions, 93 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}; @@ -17,49 +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) +drw_create(Display *dpy, int screen, Window root, unsigned int w, unsigned int h) +{ + Drw *drw; + + if (!(drw = calloc(1, sizeof(Drw)))) return NULL; drw->dpy = dpy; drw->screen = screen; @@ -70,27 +76,29 @@ 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) +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) { +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); @@ -100,13 +108,14 @@ 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)))) + if (!(font = calloc(1, sizeof(Fnt)))) return NULL; if (fontname) { @@ -125,11 +134,10 @@ drw_font_xcreate(Drw *drw, const char *fontname, FcPattern *fontpattern) { fprintf(stderr, "error, cannot load font: '%s'\n", fontname); } } else if (fontpattern) { - if (!(font->xfont = XftFontOpenPattern(drw->dpy, fontpattern))) { + if (!(font->xfont = XftFontOpenPattern(drw->dpy, fontpattern))) fprintf(stderr, "error, cannot load font pattern.\n"); - } else { + else font->pattern = NULL; - } } if (!font->xfont) { @@ -141,16 +149,19 @@ drw_font_xcreate(Drw *drw, const char *fontname, FcPattern *fontpattern) { font->descent = font->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; @@ -164,59 +175,65 @@ 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) + if (!drw) return NULL; - clr = (Clr *)calloc(1, sizeof(Clr)); - if(!clr) + if (!(clr = calloc(1, sizeof(Clr)))) return NULL; cmap = DefaultColormap(drw->dpy, drw->screen); vis = DefaultVisual(drw->dpy, drw->screen); - if(!XftColorAllocName(drw->dpy, vis, cmap, clrname, &clr->rgb)) + if (!XftColorAllocName(drw->dpy, vis, cmap, clrname, &clr->rgb)) die("error, cannot allocate color '%s'\n", clrname); clr->pix = clr->rgb.pixel; + return clr; } void -drw_clr_free(Clr *clr) { +drw_clr_free(Clr *clr) +{ free(clr); } void -drw_setscheme(Drw *drw, ClrScheme *scheme) { - if(!drw) +drw_setscheme(Drw *drw, ClrScheme *scheme) +{ + if (!drw) return; drw->scheme = scheme; } 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 empty, int invert) +{ + if (!drw || !drw->scheme) return; XSetForeground(drw->dpy, drw->gc, invert ? drw->scheme->bg->pix : drw->scheme->fg->pix); - if(filled) + if (filled) XFillRectangle(drw->dpy, drw->drawable, drw->gc, x, y, w + 1, h + 1); - else if(empty) + 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; @@ -234,9 +251,8 @@ 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)) { + if (!(render = x || y || w || h)) w = ~w; - } if (!drw || !drw->scheme) { return 0; @@ -273,24 +289,23 @@ 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; @@ -298,7 +313,6 @@ 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; } @@ -315,17 +329,15 @@ 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. - */ + * information. */ die("The first font in the cache must be loaded from a font string.\n"); } @@ -345,36 +357,34 @@ 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) { + if (curfont) drw_font_free(curfont); - } curfont = drw->fonts[0]; } } } } - - if (render) { + if (render) XftDrawDestroy(d); - } return x; } 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); } - 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) + if (!font || !text) return; XftTextExtentsUtf8(font->dpy, font->xfont, (XftChar8 *)text, len, &ext); tex->h = font->h; @@ -382,31 +392,34 @@ drw_font_getexts(Fnt *font, const char *text, unsigned int len, Extnts *tex) { } 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) + if (!font) return -1; drw_font_getexts(font, text, len, &tex); return tex.w; } Cur * -drw_cur_create(Drw *drw, int shape) { +drw_cur_create(Drw *drw, int shape) +{ Cur *cur; - if(!drw) + if (!drw) return NULL; - cur = (Cur *)calloc(1, sizeof(Cur)); - if (!cur) + if (!(cur = calloc(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 (!drw || !cursor) return; XFreeCursor(drw->dpy, cursor->cursor); free(cursor); @@ -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); |