import new drw and util from libsl.
This commit is contained in:
Markus Teich
326
drw.c
326
drw.c
@ -9,9 +9,7 @@
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#include "util.h"
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#define UTF_INVALID 0xFFFD
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#define UTF_SIZ 4
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static void drw_xfont_free(Fnt *font);
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#define UTF_SIZ 4
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static const unsigned char utfbyte[UTF_SIZ + 1] = {0x80, 0, 0xC0, 0xE0, 0xF0};
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static const unsigned char utfmask[UTF_SIZ + 1] = {0xC0, 0x80, 0xE0, 0xF0, 0xF8};
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@ -19,50 +17,54 @@ 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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for(*i = 0; *i < (UTF_SIZ + 1); ++(*i))
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if(((unsigned char)c & utfmask[*i]) == utfbyte[*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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return 0;
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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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if(!BETWEEN(*u, utfmin[i], utfmax[i]) || BETWEEN(*u, 0xD800, 0xDFFF))
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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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for (i = 1; *u > utfmax[i]; ++i)
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;
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return 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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*u = UTF_INVALID;
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if(!clen)
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if (!clen)
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return 0;
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udecoded = utf8decodebyte(c[0], &len);
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if(!BETWEEN(len, 1, UTF_SIZ))
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if (!BETWEEN(len, 1, UTF_SIZ))
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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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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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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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return NULL;
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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 = ecalloc(1, sizeof(Drw));
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drw->dpy = dpy;
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drw->screen = screen;
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drw->root = root;
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@ -71,22 +73,26 @@ drw_create(Display *dpy, int screen, Window root, unsigned int w, unsigned int h
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drw->drawable = XCreatePixmap(dpy, root, w, h, DefaultDepth(dpy, screen));
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drw->gc = XCreateGC(dpy, root, 0, NULL);
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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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if(!drw)
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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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XFreePixmap(drw->dpy, drw->drawable);
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XFreeGC(drw->dpy, drw->gc);
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free(drw);
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@ -96,119 +102,123 @@ drw_free(Drw *drw) {
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* drw_fontset_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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xfont_create(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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return NULL;
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XftFont *xfont = NULL;
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FcPattern *pattern = NULL;
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if (fontname) {
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/* Using the pattern found at font->xfont->pattern does not yield the
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* same substitution results as using the pattern returned by
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* FcNameParse; using the latter results in the desired fallback
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* behaviour whereas the former just results in
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* missing-character-rectangles being drawn, at least with some fonts.
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*/
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if (!(font->xfont = XftFontOpenName(drw->dpy, drw->screen, fontname)) ||
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!(font->pattern = FcNameParse((const FcChar8 *) fontname))) {
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if (font->xfont) {
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XftFontClose(drw->dpy, font->xfont);
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font->xfont = NULL;
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}
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fprintf(stderr, "error, cannot load font: '%s'\n", fontname);
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* behaviour whereas the former just results in missing-character
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* rectangles being drawn, at least with some fonts. */
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if (!(xfont = XftFontOpenName(drw->dpy, drw->screen, fontname))) {
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fprintf(stderr, "error, cannot load font from name: '%s'\n", fontname);
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return NULL;
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}
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if (!(pattern = FcNameParse((FcChar8 *) fontname))) {
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fprintf(stderr, "error, cannot parse font name to pattern: '%s'\n", fontname);
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XftFontClose(drw->dpy, xfont);
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return NULL;
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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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fprintf(stderr, "error, cannot load font pattern.\n");
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} else {
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font->pattern = NULL;
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if (!(xfont = XftFontOpenPattern(drw->dpy, fontpattern))) {
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fprintf(stderr, "error, cannot load font from pattern.\n");
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return NULL;
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}
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} else {
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die("no font specified.\n");
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}
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if (!font->xfont) {
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free(font);
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return NULL;
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}
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font->ascent = font->xfont->ascent;
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font->descent = font->xfont->descent;
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font->h = font->ascent + font->descent;
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font = ecalloc(1, sizeof(Fnt));
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font->xfont = xfont;
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font->pattern = pattern;
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font->h = xfont->ascent + xfont->descent;
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font->dpy = drw->dpy;
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return font;
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}
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void
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drw_xfont_free(Fnt *font) {
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if(!font)
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static void
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xfont_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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if (font->pattern)
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FcPatternDestroy(font->pattern);
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XftFontClose(font->dpy, font->xfont);
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free(font);
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}
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Fnt*
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drw_fontset_create(Drw* drw, const char *fonts[], size_t fontcount) {
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Fnt *ret = NULL;
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Fnt *cur = NULL;
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ssize_t i;
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for (i = fontcount - 1; i >= 0; i--) {
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if ((cur = drw_font_xcreate(drw, fonts[i], NULL))) {
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drw_fontset_create(Drw* drw, const char *fonts[], size_t fontcount)
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{
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Fnt *cur, *ret = NULL;
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size_t i;
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if (!drw || !fonts)
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return NULL;
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for (i = 1; i <= fontcount; i++) {
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if ((cur = xfont_create(drw, fonts[fontcount - i], NULL))) {
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cur->next = ret;
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ret = cur;
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}
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}
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return (drw->fonts = ret);
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}
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void
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drw_fontset_free(Fnt *font)
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{
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if (font) {
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drw_fontset_free(font->next);
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xfont_free(font);
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}
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}
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void
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drw_clr_create(Drw *drw, Clr *dest, const char *clrname)
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{
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if (!drw || !dest || !clrname)
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return;
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if (!XftColorAllocName(drw->dpy, DefaultVisual(drw->dpy, drw->screen),
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DefaultColormap(drw->dpy, drw->screen),
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clrname, dest))
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die("error, cannot allocate color '%s'\n", clrname);
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}
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/* Wrapper to create color schemes. The caller has to call free(3) on the
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* returned color scheme when done using it. */
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Clr *
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drw_scm_create(Drw *drw, const char *clrnames[], size_t clrcount)
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{
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size_t i;
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Clr *ret;
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/* need at least two colors for a scheme */
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if (!drw || !clrnames || clrcount < 2 || !(ret = ecalloc(clrcount, sizeof(XftColor))))
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return NULL;
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for (i = 0; i < clrcount; i++)
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drw_clr_create(drw, &ret[i], clrnames[i]);
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return ret;
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}
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void
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drw_fontset_free(Fnt *font) {
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Fnt *nf = font;
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while ((font = nf)) {
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nf = font->next;
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drw_xfont_free(font);
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}
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}
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Scm *
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drw_scm_create(Drw *drw, const char *fgname, const char *bgname) {
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Scm *scm;
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Colormap cmap;
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Visual *vis;
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if (!drw || !(scm = (Scm *)calloc(1, sizeof(Scm))))
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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, fgname, &scm->fg.rgb))
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die("error, cannot allocate color '%s'\n", fgname);
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if (!XftColorAllocName(drw->dpy, vis, cmap, bgname, &scm->bg.rgb))
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die("error, cannot allocate color '%s'\n", bgname);
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scm->fg.pix = scm->fg.rgb.pixel;
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scm->bg.pix = scm->bg.rgb.pixel;
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return scm;
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}
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void
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drw_scm_free(Scm *scm) {
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if (scm)
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free(scm);
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}
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void
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drw_setfontset(Drw *drw, Fnt *set) {
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drw_setfontset(Drw *drw, Fnt *set)
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{
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if (drw)
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drw->fonts = set;
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}
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void
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drw_setscheme(Drw *drw, Scm *scm) {
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if (drw && scm)
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drw_setscheme(Drw *drw, Clr *scm)
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{
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if (drw)
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drw->scheme = scm;
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}
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@ -217,24 +227,23 @@ 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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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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XSetForeground(drw->dpy, drw->gc, invert ? drw->scheme[ColBg].pixel : drw->scheme[ColFg].pixel);
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if (filled)
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XFillRectangle(drw->dpy, drw->drawable, drw->gc, x, y, w, h);
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else
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XDrawRectangle(drw->dpy, drw->drawable, drw->gc, x, y, w, h);
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XDrawRectangle(drw->dpy, drw->drawable, drw->gc, x, y, w - 1, h - 1);
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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, unsigned int lpad, 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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unsigned int ew = 0;
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Colormap cmap;
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Visual *vis;
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XftDraw *d;
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int ty;
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unsigned int ew;
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XftDraw *d = NULL;
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Fnt *usedfont, *curfont, *nextfont;
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size_t i, len;
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int utf8strlen, utf8charlen, render;
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int utf8strlen, utf8charlen, render = x || y || w || h;
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long utf8codepoint = 0;
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const char *utf8str;
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FcCharSet *fccharset;
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@ -243,23 +252,19 @@ 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 (!drw || (render && !drw->scheme) || !text || !drw->fonts)
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return 0;
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if (!render) {
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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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} else if (render) {
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XSetForeground(drw->dpy, drw->gc, invert ? drw->scheme->fg.pix : drw->scheme->bg.pix);
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} else {
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XSetForeground(drw->dpy, drw->gc, drw->scheme[invert ? ColFg : ColBg].pixel);
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XFillRectangle(drw->dpy, drw->drawable, drw->gc, x, y, w, h);
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}
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if (!text || !drw->fonts) {
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return 0;
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} else if (render) {
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cmap = DefaultColormap(drw->dpy, drw->screen);
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vis = DefaultVisual(drw->dpy, drw->screen);
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d = XftDrawCreate(drw->dpy, drw->drawable, vis, cmap);
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d = XftDrawCreate(drw->dpy, drw->drawable,
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DefaultVisual(drw->dpy, drw->screen),
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DefaultColormap(drw->dpy, drw->screen));
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x += lpad;
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w -= lpad;
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}
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usedfont = drw->fonts;
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@ -282,32 +287,30 @@ 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) {
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if (!charexists || nextfont)
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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(usedfont, utf8str, utf8strlen, &ew, NULL);
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/* shorten text if necessary */
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for(len = MIN(utf8strlen, (sizeof buf) - 1); len && (ew > w - drw->fonts->h || w < drw->fonts->h); len--)
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for (len = MIN(utf8strlen, sizeof(buf) - 1); len && ew > w; len--)
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drw_font_getexts(usedfont, utf8str, len, &ew, NULL);
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if (len) {
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memcpy(buf, utf8str, len);
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buf[len] = '\0';
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if(len < utf8strlen)
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for(i = len; i && i > len - 3; buf[--i] = '.');
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if (len < utf8strlen)
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for (i = len; i && i > len - 3; buf[--i] = '.')
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; /* NOP */
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if (render) {
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th = usedfont->ascent + usedfont->descent;
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ty = y + (h / 2) - (th / 2) + usedfont->ascent;
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tx = x + (h / 2);
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XftDrawStringUtf8(d, invert ? &drw->scheme->bg.rgb : &drw->scheme->fg.rgb, usedfont->xfont, tx, ty, (XftChar8 *)buf, len);
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ty = y + (h - usedfont->h) / 2 + usedfont->xfont->ascent;
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XftDrawStringUtf8(d, &drw->scheme[invert ? ColBg : ColFg],
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usedfont->xfont, x, ty, (XftChar8 *)buf, len);
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}
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x += ew;
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w -= ew;
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}
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@ -320,18 +323,15 @@ drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, const char *tex
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usedfont = nextfont;
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} else {
|
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/* Regardless of whether or not a fallback font is found, the
|
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* character must be drawn.
|
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*/
|
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* character must be drawn. */
|
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charexists = 1;
|
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|
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fccharset = FcCharSetCreate();
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FcCharSetAddChar(fccharset, utf8codepoint);
|
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|
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if (!drw->fonts->pattern) {
|
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/* Refer to the comment in drw_font_xcreate for more
|
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* information.
|
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*/
|
||||
die("The first font in the cache must be loaded from a font string.\n");
|
||||
/* Refer to the comment in xfont_create for more information. */
|
||||
die("the first font in the cache must be loaded from a font string.\n");
|
||||
}
|
||||
|
||||
fcpattern = FcPatternDuplicate(drw->fonts->pattern);
|
||||
@ -346,47 +346,50 @@ drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, const char *tex
|
||||
FcPatternDestroy(fcpattern);
|
||||
|
||||
if (match) {
|
||||
usedfont = drw_font_xcreate(drw, NULL, match);
|
||||
usedfont = xfont_create(drw, NULL, match);
|
||||
if (usedfont && XftCharExists(drw->dpy, usedfont->xfont, utf8codepoint)) {
|
||||
for (curfont = drw->fonts; curfont->next; curfont = curfont->next)
|
||||
; /* just find the end of the linked list */
|
||||
; /* NOP */
|
||||
curfont->next = usedfont;
|
||||
} else {
|
||||
drw_xfont_free(usedfont);
|
||||
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) {
|
||||
drw_fontset_getwidth(Drw *drw, const char *text)
|
||||
{
|
||||
if (!drw || !drw->fonts || !text)
|
||||
return 0;
|
||||
return drw_text(drw, 0, 0, 0, 0, text, 0);
|
||||
return drw_text(drw, 0, 0, 0, 0, 0, text, 0);
|
||||
}
|
||||
|
||||
void
|
||||
drw_font_getexts(Fnt *font, const char *text, unsigned int len, unsigned int *w, unsigned int *h) {
|
||||
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);
|
||||
if (w)
|
||||
*w = ext.xOff;
|
||||
@ -395,19 +398,24 @@ drw_font_getexts(Fnt *font, const char *text, unsigned int len, unsigned int *w,
|
||||
}
|
||||
|
||||
Cur *
|
||||
drw_cur_create(Drw *drw, int shape) {
|
||||
drw_cur_create(Drw *drw, int shape)
|
||||
{
|
||||
Cur *cur;
|
||||
|
||||
if(!drw || !(cur = (Cur *)calloc(1, sizeof(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);
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user