drw style improvements
this makes the code-style more consistent aswell.
This commit is contained in:
Hiltjo Posthuma
parent
bc20c13db0
commit
03cb1ec55a
2 changed files with 106 additions and 93 deletions
113
drw.c
113
drw.c
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@ -17,7 +17,8 @@ static const long utfmin[UTF_SIZ + 1] = { 0, 0, 0x80, 0x800, 0x10000
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static const long utfmax[UTF_SIZ + 1] = {0x10FFFF, 0x7F, 0x7FF, 0xFFFF, 0x10FFFF};
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static long
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utf8decodebyte(const char c, size_t *i) {
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utf8decodebyte(const char c, size_t *i)
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{
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for (*i = 0; *i < (UTF_SIZ + 1); ++(*i))
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if (((unsigned char)c & utfmask[*i]) == utfbyte[*i])
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return (unsigned char)c & ~utfmask[*i];
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@ -25,7 +26,8 @@ utf8decodebyte(const char c, size_t *i) {
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}
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static size_t
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utf8validate(long *u, size_t i) {
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utf8validate(long *u, size_t i)
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{
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if (!BETWEEN(*u, utfmin[i], utfmax[i]) || BETWEEN(*u, 0xD800, 0xDFFF))
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*u = UTF_INVALID;
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for (i = 1; *u > utfmax[i]; ++i)
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@ -34,7 +36,8 @@ utf8validate(long *u, size_t i) {
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}
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static size_t
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utf8decode(const char *c, long *u, size_t clen) {
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utf8decode(const char *c, long *u, size_t clen)
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{
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size_t i, j, len, type;
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long udecoded;
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@ -46,20 +49,23 @@ utf8decode(const char *c, long *u, size_t clen) {
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return 1;
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for (i = 1, j = 1; i < clen && j < len; ++i, ++j) {
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udecoded = (udecoded << 6) | utf8decodebyte(c[i], &type);
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if(type != 0)
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if (type)
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return j;
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}
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if (j < len)
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return 0;
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*u = udecoded;
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utf8validate(u, len);
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return len;
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}
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Drw *
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drw_create(Display *dpy, int screen, Window root, unsigned int w, unsigned int h) {
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Drw *drw = (Drw *)calloc(1, sizeof(Drw));
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if(!drw)
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drw_create(Display *dpy, int screen, Window root, unsigned int w, unsigned int h)
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{
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Drw *drw;
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if (!(drw = calloc(1, sizeof(Drw))))
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return NULL;
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drw->dpy = dpy;
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drw->screen = screen;
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@ -70,27 +76,29 @@ drw_create(Display *dpy, int screen, Window root, unsigned int w, unsigned int h
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drw->gc = XCreateGC(dpy, root, 0, NULL);
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drw->fontcount = 0;
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XSetLineAttributes(dpy, drw->gc, 1, LineSolid, CapButt, JoinMiter);
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return drw;
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}
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void
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drw_resize(Drw *drw, unsigned int w, unsigned int h) {
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drw_resize(Drw *drw, unsigned int w, unsigned int h)
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{
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if (!drw)
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return;
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drw->w = w;
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drw->h = h;
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if(drw->drawable != 0)
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if (drw->drawable)
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XFreePixmap(drw->dpy, drw->drawable);
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drw->drawable = XCreatePixmap(drw->dpy, drw->root, w, h, DefaultDepth(drw->dpy, drw->screen));
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}
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void
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drw_free(Drw *drw) {
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drw_free(Drw *drw)
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{
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size_t i;
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for (i = 0; i < drw->fontcount; i++) {
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for (i = 0; i < drw->fontcount; i++)
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drw_font_free(drw->fonts[i]);
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}
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XFreePixmap(drw->dpy, drw->drawable);
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XFreeGC(drw->dpy, drw->gc);
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free(drw);
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@ -100,13 +108,14 @@ drw_free(Drw *drw) {
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* drw_font_create instead.
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*/
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static Fnt *
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drw_font_xcreate(Drw *drw, const char *fontname, FcPattern *fontpattern) {
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drw_font_xcreate(Drw *drw, const char *fontname, FcPattern *fontpattern)
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{
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Fnt *font;
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if (!(fontname || fontpattern))
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die("No font specified.\n");
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if (!(font = (Fnt *)calloc(1, sizeof(Fnt))))
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if (!(font = calloc(1, sizeof(Fnt))))
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return NULL;
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if (fontname) {
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@ -125,12 +134,11 @@ drw_font_xcreate(Drw *drw, const char *fontname, FcPattern *fontpattern) {
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fprintf(stderr, "error, cannot load font: '%s'\n", fontname);
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}
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} else if (fontpattern) {
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if (!(font->xfont = XftFontOpenPattern(drw->dpy, fontpattern))) {
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if (!(font->xfont = XftFontOpenPattern(drw->dpy, fontpattern)))
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fprintf(stderr, "error, cannot load font pattern.\n");
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} else {
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else
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font->pattern = NULL;
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}
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}
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if (!font->xfont) {
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free(font);
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@ -141,16 +149,19 @@ drw_font_xcreate(Drw *drw, const char *fontname, FcPattern *fontpattern) {
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font->descent = font->xfont->descent;
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font->h = font->ascent + font->descent;
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font->dpy = drw->dpy;
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return font;
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}
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Fnt*
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drw_font_create(Drw *drw, const char *fontname) {
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drw_font_create(Drw *drw, const char *fontname)
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{
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return drw_font_xcreate(drw, fontname, NULL);
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}
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void
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drw_load_fonts(Drw* drw, const char *fonts[], size_t fontcount) {
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drw_load_fonts(Drw* drw, const char *fonts[], size_t fontcount)
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{
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size_t i;
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Fnt *font;
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@ -164,7 +175,8 @@ drw_load_fonts(Drw* drw, const char *fonts[], size_t fontcount) {
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}
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void
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drw_font_free(Fnt *font) {
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drw_font_free(Fnt *font)
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{
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if (!font)
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return;
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if (font->pattern)
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@ -174,38 +186,42 @@ drw_font_free(Fnt *font) {
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}
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Clr *
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drw_clr_create(Drw *drw, const char *clrname) {
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drw_clr_create(Drw *drw, const char *clrname)
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{
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Clr *clr;
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Colormap cmap;
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Visual *vis;
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if (!drw)
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return NULL;
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clr = (Clr *)calloc(1, sizeof(Clr));
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if(!clr)
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if (!(clr = calloc(1, sizeof(Clr))))
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return NULL;
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cmap = DefaultColormap(drw->dpy, drw->screen);
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vis = DefaultVisual(drw->dpy, drw->screen);
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if (!XftColorAllocName(drw->dpy, vis, cmap, clrname, &clr->rgb))
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die("error, cannot allocate color '%s'\n", clrname);
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clr->pix = clr->rgb.pixel;
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return clr;
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}
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void
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drw_clr_free(Clr *clr) {
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drw_clr_free(Clr *clr)
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{
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free(clr);
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}
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void
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drw_setscheme(Drw *drw, ClrScheme *scheme) {
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drw_setscheme(Drw *drw, ClrScheme *scheme)
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{
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if (!drw)
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return;
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drw->scheme = scheme;
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}
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void
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drw_rect(Drw *drw, int x, int y, unsigned int w, unsigned int h, int filled, int empty, int invert) {
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drw_rect(Drw *drw, int x, int y, unsigned int w, unsigned int h, int filled, int empty, int invert)
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{
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if (!drw || !drw->scheme)
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return;
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XSetForeground(drw->dpy, drw->gc, invert ? drw->scheme->bg->pix : drw->scheme->fg->pix);
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@ -216,7 +232,8 @@ drw_rect(Drw *drw, int x, int y, unsigned int w, unsigned int h, int filled, int
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}
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int
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drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, const char *text, int invert) {
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drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, const char *text, int invert)
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{
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char buf[1024];
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int tx, ty, th;
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Extnts tex;
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@ -234,9 +251,8 @@ drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, const char *tex
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XftResult result;
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int charexists = 0;
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if (!(render = x || y || w || h)) {
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if (!(render = x || y || w || h))
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w = ~w;
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}
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if (!drw || !drw->scheme) {
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return 0;
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@ -273,12 +289,11 @@ drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, const char *tex
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}
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}
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if (!charexists || (nextfont && nextfont != curfont)) {
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if (!charexists || (nextfont && nextfont != curfont))
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break;
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} else {
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else
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charexists = 0;
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}
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}
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if (utf8strlen) {
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drw_font_getexts(curfont, utf8str, utf8strlen, &tex);
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@ -298,7 +313,6 @@ drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, const char *tex
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tx = x + (h / 2);
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XftDrawStringUtf8(d, invert ? &drw->scheme->bg->rgb : &drw->scheme->fg->rgb, curfont->xfont, tx, ty, (XftChar8 *)buf, len);
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}
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x += tex.w;
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w -= tex.w;
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}
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@ -315,17 +329,15 @@ drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, const char *tex
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*/
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charexists = 1;
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if (drw->fontcount >= DRW_FONT_CACHE_SIZE) {
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if (drw->fontcount >= DRW_FONT_CACHE_SIZE)
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continue;
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}
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fccharset = FcCharSetCreate();
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FcCharSetAddChar(fccharset, utf8codepoint);
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if (!drw->fonts[0]->pattern) {
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/* Refer to the comment in drw_font_xcreate for more
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* information.
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*/
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* information. */
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die("The first font in the cache must be loaded from a font string.\n");
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}
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@ -345,33 +357,31 @@ drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, const char *tex
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if (curfont && XftCharExists(drw->dpy, curfont->xfont, utf8codepoint)) {
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drw->fonts[drw->fontcount++] = curfont;
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} else {
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if (curfont) {
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if (curfont)
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drw_font_free(curfont);
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}
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curfont = drw->fonts[0];
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}
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}
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}
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}
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if (render) {
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if (render)
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XftDrawDestroy(d);
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}
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return x;
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}
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void
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drw_map(Drw *drw, Window win, int x, int y, unsigned int w, unsigned int h) {
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drw_map(Drw *drw, Window win, int x, int y, unsigned int w, unsigned int h)
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{
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if (!drw)
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return;
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XCopyArea(drw->dpy, drw->drawable, win, drw->gc, x, y, w, h, x, y);
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XSync(drw->dpy, False);
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}
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void
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drw_font_getexts(Fnt *font, const char *text, unsigned int len, Extnts *tex) {
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drw_font_getexts(Fnt *font, const char *text, unsigned int len, Extnts *tex)
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{
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XGlyphInfo ext;
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if (!font || !text)
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@ -382,7 +392,8 @@ drw_font_getexts(Fnt *font, const char *text, unsigned int len, Extnts *tex) {
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}
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unsigned int
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drw_font_getexts_width(Fnt *font, const char *text, unsigned int len) {
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drw_font_getexts_width(Fnt *font, const char *text, unsigned int len)
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{
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Extnts tex;
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if (!font)
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@ -392,20 +403,22 @@ drw_font_getexts_width(Fnt *font, const char *text, unsigned int len) {
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}
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Cur *
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drw_cur_create(Drw *drw, int shape) {
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drw_cur_create(Drw *drw, int shape)
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{
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Cur *cur;
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if (!drw)
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return NULL;
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cur = (Cur *)calloc(1, sizeof(Cur));
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if (!cur)
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if (!(cur = calloc(1, sizeof(Cur))))
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return NULL;
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cur->cursor = XCreateFontCursor(drw->dpy, shape);
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return cur;
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}
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void
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drw_cur_free(Drw *drw, Cur *cursor) {
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drw_cur_free(Drw *drw, Cur *cursor)
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{
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if (!drw || !cursor)
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return;
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XFreeCursor(drw->dpy, cursor->cursor);
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34
drw.h
34
drw.h
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@ -43,32 +43,32 @@ typedef struct {
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} Extnts;
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/* Drawable abstraction */
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Drw *drw_create(Display *dpy, int screen, Window win, unsigned int w, unsigned int h);
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void drw_resize(Drw *drw, unsigned int w, unsigned int h);
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void drw_free(Drw *drw);
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Drw *drw_create(Display *, int, Window, unsigned int, unsigned int);
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void drw_resize(Drw *, unsigned int, unsigned int);
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void drw_free(Drw *);
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/* Fnt abstraction */
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Fnt *drw_font_create(Drw *drw, const char *fontname);
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void drw_load_fonts(Drw* drw, const char *fonts[], size_t fontcount);
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void drw_font_free(Fnt *font);
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void drw_font_getexts(Fnt *font, const char *text, unsigned int len, Extnts *extnts);
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unsigned int drw_font_getexts_width(Fnt *font, const char *text, unsigned int len);
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Fnt *drw_font_create(Drw *, const char *);
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void drw_load_fonts(Drw *, const char *[], size_t);
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void drw_font_free(Fnt *);
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void drw_font_getexts(Fnt *, const char *, unsigned int, Extnts *);
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unsigned int drw_font_getexts_width(Fnt *, const char *, unsigned int);
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/* Colour abstraction */
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Clr *drw_clr_create(Drw *drw, const char *clrname);
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void drw_clr_free(Clr *clr);
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Clr *drw_clr_create(Drw *, const char *);
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void drw_clr_free(Clr *);
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/* Cursor abstraction */
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Cur *drw_cur_create(Drw *drw, int shape);
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void drw_cur_free(Drw *drw, Cur *cursor);
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Cur *drw_cur_create(Drw *, int);
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void drw_cur_free(Drw *, Cur *);
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/* Drawing context manipulation */
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void drw_setfont(Drw *drw, Fnt *font);
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void drw_setscheme(Drw *drw, ClrScheme *scheme);
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void drw_setfont(Drw *, Fnt *);
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void drw_setscheme(Drw *, ClrScheme *);
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/* Drawing functions */
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void drw_rect(Drw *drw, int x, int y, unsigned int w, unsigned int h, int filled, int empty, int invert);
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int drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, const char *text, int invert);
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void drw_rect(Drw *, int, int, unsigned int, unsigned int, int, int, int);
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int drw_text(Drw *, int, int, unsigned int, unsigned int, const char *, int);
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/* Map functions */
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void drw_map(Drw *drw, Window win, int x, int y, unsigned int w, unsigned int h);
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void drw_map(Drw *, Window, int, int, unsigned int, unsigned int);
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