t* My version of sent
URI git clone git://git.codevoid.de/sent-sdk.git
DIR Log
DIR Files
DIR Refs
DIR README
DIR LICENSE
---
DIR commit b37ef383354248940465be915f3bbdb5ff66308c
DIR parent c6c12c4f92285667ceede617b81053c29933d243
URI Author: Markus Teich <markus.teich@stusta.mhn.de>
Date: Sun, 5 Apr 2015 15:48:47 +0200
prepare switch to libsl
Diffstat:
M Makefile | 2 +-
M config.mk | 4 ++--
A drw.c | 411 ++++++++++++++++++++++++++++++
A drw.h | 74 +++++++++++++++++++++++++++++++
A util.c | 17 +++++++++++++++++
A util.h | 7 +++++++
6 files changed, 512 insertions(+), 3 deletions(-)
---
DIR diff --git a/Makefile b/Makefile
t@@ -3,7 +3,7 @@
include config.mk
-SRC = sent.c
+SRC = sent.c drw.c util.c
OBJ = ${SRC:.c=.o}
all: options sent
DIR diff --git a/config.mk b/config.mk
t@@ -11,8 +11,8 @@ X11INC = /usr/X11R6/include
X11LIB = /usr/X11R6/lib
# includes and libs
-INCS = -I. -I/usr/include -I${X11INC}
-LIBS = -L/usr/lib -lc -lm -L${X11LIB} -lX11 -lpng
+INCS = -I. -I/usr/include -I/usr/include/freetype2 -I${X11INC}
+LIBS = -L/usr/lib -lc -lm -L${X11LIB} -lXft -lfontconfig -lX11 -lpng
# flags
CPPFLAGS = -DVERSION=\"${VERSION}\" -D_XOPEN_SOURCE=600
DIR diff --git a/drw.c b/drw.c
t@@ -0,0 +1,411 @@
+/* See LICENSE file for copyright and license details. */
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <X11/Xlib.h>
+#include <X11/Xft/Xft.h>
+
+#include "drw.h"
+#include "util.h"
+
+#define UTF_INVALID 0xFFFD
+#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};
+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])
+ 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))
+ *u = UTF_INVALID;
+ for(i = 1; *u > utfmax[i]; ++i)
+ ;
+ return i;
+}
+
+static size_t
+utf8decode(const char *c, long *u, size_t clen) {
+ size_t i, j, len, type;
+ long udecoded;
+
+ *u = UTF_INVALID;
+ if(!clen)
+ return 0;
+ udecoded = utf8decodebyte(c[0], &len);
+ if(!BETWEEN(len, 1, UTF_SIZ))
+ return 1;
+ for(i = 1, j = 1; i < clen && j < len; ++i, ++j) {
+ udecoded = (udecoded << 6) | utf8decodebyte(c[i], &type);
+ if(type != 0)
+ return j;
+ }
+ 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->dpy = dpy;
+ drw->screen = screen;
+ drw->root = root;
+ drw->w = w;
+ 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)
+ return;
+ drw->w = w;
+ drw->h = h;
+ if(drw->drawable != 0)
+ 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;
+ 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);
+}
+
+/* This function is an implementation detail. Library users should use
+ * drw_font_create instead.
+ */
+static Fnt *
+drw_font_xcreate(Drw *drw, const char *fontname, FcPattern *fontpattern) {
+ Fnt *font;
+
+ if (!(fontname || fontpattern))
+ die("No font specified.\n");
+
+ if (!(font = (Fnt *)calloc(1, sizeof(Fnt))))
+ return NULL;
+
+ if (fontname) {
+ /* Using the pattern found at font->xfont->pattern does not yield same
+ * 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);
+ }
+ } else if (fontpattern) {
+ if (!(font->xfont = XftFontOpenPattern(drw->dpy, fontpattern))) {
+ fprintf(stderr, "error, cannot load font pattern.\n");
+ } else {
+ font->pattern = NULL;
+ }
+ }
+
+ if (!font->xfont) {
+ free(font);
+ return NULL;
+ }
+
+ font->ascent = font->xfont->ascent;
+ 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) {
+ return drw_font_xcreate(drw, fontname, NULL);
+}
+
+void
+drw_load_fonts(Drw* drw, const char *fonts[], size_t fontcount) {
+ size_t i;
+ Fnt *font;
+ for (i = 0; i < fontcount; i++) {
+ if (drw->fontcount >= DRW_FONT_CACHE_SIZE) {
+ die("Font cache exhausted.\n");
+ } else if ((font = drw_font_xcreate(drw, fonts[i], NULL))) {
+ drw->fonts[drw->fontcount++] = font;
+ }
+ }
+}
+
+void
+drw_font_free(Fnt *font) {
+ if(!font)
+ return;
+ if(font->pattern)
+ FcPatternDestroy(font->pattern);
+ XftFontClose(font->dpy, font->xfont);
+ free(font);
+}
+
+Clr *
+drw_clr_create(Drw *drw, const char *clrname) {
+ Clr *clr;
+ Colormap cmap;
+ Visual *vis;
+
+ if(!drw)
+ return NULL;
+ clr = (Clr *)calloc(1, sizeof(Clr));
+ if(!clr)
+ return NULL;
+ cmap = DefaultColormap(drw->dpy, drw->screen);
+ vis = DefaultVisual(drw->dpy, drw->screen);
+ if(!XftColorAllocName(drw->dpy, vis, cmap, clrname, &clr->rgb))
+ die("error, cannot allocate color '%s'\n", clrname);
+ clr->pix = clr->rgb.pixel;
+ return clr;
+}
+
+void
+drw_clr_free(Clr *clr) {
+ if(clr)
+ free(clr);
+}
+
+void
+drw_setscheme(Drw *drw, ClrScheme *scheme) {
+ if(drw && scheme)
+ drw->scheme = scheme;
+}
+
+void
+drw_rect(Drw *drw, int x, int y, unsigned int w, unsigned int h, int filled, int empty, int invert) {
+ int dx;
+
+ if(!drw || !drw->fontcount || !drw->scheme)
+ return;
+ XSetForeground(drw->dpy, drw->gc, invert ? drw->scheme->bg->pix : drw->scheme->fg->pix);
+ dx = (drw->fonts[0]->ascent + drw->fonts[0]->descent + 2) / 4;
+ if(filled)
+ XFillRectangle(drw->dpy, drw->drawable, drw->gc, x+1, y+1, dx+1, dx+1);
+ else if(empty)
+ XDrawRectangle(drw->dpy, drw->drawable, drw->gc, x+1, y+1, dx, dx);
+}
+
+int
+drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, const char *text, int invert) {
+ char buf[1024];
+ int tx, ty, th;
+ Extnts tex;
+ Colormap cmap;
+ Visual *vis;
+ XftDraw *d;
+ Fnt *curfont, *nextfont;
+ size_t i, len;
+ int utf8strlen, utf8charlen, render;
+ long utf8codepoint = 0;
+ const char *utf8str;
+ FcCharSet *fccharset;
+ FcPattern *fcpattern;
+ FcPattern *match;
+ XftResult result;
+ int charexists = 0;
+
+ if (!(render = x || y || w || h)) {
+ w = ~w;
+ }
+
+ if (!drw || !drw->scheme) {
+ return 0;
+ } else if (render) {
+ XSetForeground(drw->dpy, drw->gc, invert ? drw->scheme->fg->pix : drw->scheme->bg->pix);
+ 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);
+ }
+
+ curfont = drw->fonts[0];
+ 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);
+ if (charexists) {
+ if (drw->fonts[i] == curfont) {
+ utf8strlen += utf8charlen;
+ text += utf8charlen;
+ } else {
+ nextfont = drw->fonts[i];
+ }
+ break;
+ }
+ }
+
+ if (!charexists || (nextfont && nextfont != curfont)) {
+ break;
+ } 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--)
+ 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 (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);
+ }
+
+ x += tex.w;
+ w -= tex.w;
+ }
+ }
+
+ if (!*text) {
+ break;
+ } else if (nextfont) {
+ charexists = 0;
+ curfont = nextfont;
+ } else {
+ /* Regardless of whether or not a fallback font is found, the
+ * 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");
+ }
+
+ fcpattern = FcPatternDuplicate(drw->fonts[0]->pattern);
+ FcPatternAddCharSet(fcpattern, FC_CHARSET, fccharset);
+ FcPatternAddBool(fcpattern, FC_SCALABLE, FcTrue);
+
+ FcConfigSubstitute(NULL, fcpattern, FcMatchPattern);
+ FcDefaultSubstitute(fcpattern);
+ match = XftFontMatch(drw->dpy, drw->screen, fcpattern, &result);
+
+ FcCharSetDestroy(fccharset);
+ FcPatternDestroy(fcpattern);
+
+ if (match) {
+ curfont = drw_font_xcreate(drw, NULL, match);
+ if (curfont && XftCharExists(drw->dpy, curfont->xfont, utf8codepoint)) {
+ drw->fonts[drw->fontcount++] = curfont;
+ } else {
+ if (curfont) {
+ drw_font_free(curfont);
+ }
+ curfont = drw->fonts[0];
+ }
+ }
+ }
+ }
+
+ 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)
+ 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) {
+ XGlyphInfo ext;
+
+ if(!font || !text)
+ return;
+ XftTextExtentsUtf8(font->dpy, font->xfont, (XftChar8 *)text, len, &ext);
+ tex->h = font->h;
+ tex->w = ext.xOff;
+}
+
+unsigned int
+drw_font_getexts_width(Fnt *font, const char *text, unsigned int len) {
+ Extnts tex;
+
+ if(!font)
+ return -1;
+ drw_font_getexts(font, text, len, &tex);
+ return tex.w;
+}
+
+Cur *
+drw_cur_create(Drw *drw, int shape) {
+ Cur *cur = (Cur *)calloc(1, sizeof(Cur));
+
+ if(!drw || !cur)
+ return NULL;
+ cur->cursor = XCreateFontCursor(drw->dpy, shape);
+ return cur;
+}
+
+void
+drw_cur_free(Drw *drw, Cur *cursor) {
+ if(!drw || !cursor)
+ return;
+ XFreeCursor(drw->dpy, cursor->cursor);
+ free(cursor);
+}
DIR diff --git a/drw.h b/drw.h
t@@ -0,0 +1,74 @@
+/* See LICENSE file for copyright and license details. */
+#define DRW_FONT_CACHE_SIZE 32
+
+typedef struct {
+ unsigned long pix;
+ XftColor rgb;
+} Clr;
+
+typedef struct {
+ Cursor cursor;
+} Cur;
+
+typedef struct {
+ Display *dpy;
+ int ascent;
+ int descent;
+ unsigned int h;
+ XftFont *xfont;
+ FcPattern *pattern;
+} Fnt;
+
+typedef struct {
+ Clr *fg;
+ Clr *bg;
+ Clr *border;
+} ClrScheme;
+
+typedef struct {
+ unsigned int w, h;
+ Display *dpy;
+ int screen;
+ Window root;
+ Drawable drawable;
+ GC gc;
+ ClrScheme *scheme;
+ size_t fontcount;
+ Fnt *fonts[DRW_FONT_CACHE_SIZE];
+} Drw;
+
+typedef struct {
+ unsigned int w;
+ unsigned int h;
+} 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);
+
+/* 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);
+
+/* Colour abstraction */
+Clr *drw_clr_create(Drw *drw, const char *clrname);
+void drw_clr_free(Clr *clr);
+
+/* Cursor abstraction */
+Cur *drw_cur_create(Drw *drw, int shape);
+void drw_cur_free(Drw *drw, Cur *cursor);
+
+/* Drawing context manipulation */
+void drw_setfont(Drw *drw, Fnt *font);
+void drw_setscheme(Drw *drw, ClrScheme *scheme);
+
+/* 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);
+
+/* Map functions */
+void drw_map(Drw *drw, Window win, int x, int y, unsigned int w, unsigned int h);
DIR diff --git a/util.c b/util.c
t@@ -0,0 +1,17 @@
+/* See LICENSE file for copyright and license details. */
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "util.h"
+
+void
+die(const char *errstr, ...) {
+ va_list ap;
+
+ va_start(ap, errstr);
+ vfprintf(stderr, errstr, ap);
+ va_end(ap);
+ exit(EXIT_FAILURE);
+}
+
DIR diff --git a/util.h b/util.h
t@@ -0,0 +1,7 @@
+/* See LICENSE file for copyright and license details. */
+
+#define MAX(A, B) ((A) > (B) ? (A) : (B))
+#define MIN(A, B) ((A) < (B) ? (A) : (B))
+#define BETWEEN(X, A, B) ((A) <= (X) && (X) <= (B))
+
+void die(const char *errstr, ...);