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	tadded draw.h, draw.c - dwm - [fork] customized build of dwm, the dynamic windo…
	git clone git://src.adamsgaard.dk/dwm
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	---
	commit e7d41cc18824114300a09d3bdb26c536f30b466e
	parent 22d88188505b2f08296c32ca82a81cce2b59c909
	Author: Connor Lane Smith <[email protected]>
	Date: Fri, 20 May 2011 19:10:26 +0100

	added draw.h, draw.c
	Diffstat:
	A draw.c \| 176 +++++++++++++++++++++++++++++…
	A draw.h \| 35 +++++++++++++++++++++++++++++…

	2 files changed, 211 insertions(+), 0 deletions(-)
	---
	diff --git a/draw.c b/draw.c
	t@@ -0,0 +1,176 @@
	+/* See LICENSE file for copyright and license details. */
	+#include <locale.h>
	+#include <stdarg.h>
	+#include <stdio.h>
	+#include <stdlib.h>
	+#include <string.h>
	+#include <X11/Xlib.h>
	+#include "draw.h"
	+
	+#define MAX(a, b) ((a) > (b) ? (a) : (b))
	+#define MIN(a, b) ((a) < (b) ? (a) : (b))
	+#define DEFAULTFN "fixed"
	+
	+static Bool loadfont(DC dc, const char fontstr);
	+
	+void
	+drawrect(DC *dc, int x, int y, unsigned int w, unsigned int h, Bool fill, unsi…
	+ XSetForeground(dc->dpy, dc->gc, color);
	+ if(fill)
	+ XFillRectangle(dc->dpy, dc->canvas, dc->gc, dc->x + x, dc->y +…
	+ else
	+ XDrawRectangle(dc->dpy, dc->canvas, dc->gc, dc->x + x, dc->y +…
	+}
	+
	+void
	+drawtext(DC dc, const char text, unsigned long col[ColLast]) {
	+ char buf[BUFSIZ];
	+ size_t mn, n = strlen(text);
	+
	+ /* shorten text if necessary */
	+ for(mn = MIN(n, sizeof buf); textnw(dc, text, mn) + dc->font.height/2 …
	+ if(mn == 0)
	+ return;
	+ memcpy(buf, text, mn);
	+ if(mn < n)
	+ for(n = MAX(mn-3, 0); n < mn; buf[n++] = '.');
	+
	+ drawrect(dc, 0, 0, dc->w, dc->h, True, BG(dc, col));
	+ drawtextn(dc, buf, mn, col);
	+}
	+
	+void
	+drawtextn(DC dc, const char text, size_t n, unsigned long col[ColLast]) {
	+ int x = dc->x + dc->font.height/2;
	+ int y = dc->y + dc->font.ascent+1;
	+
	+ XSetForeground(dc->dpy, dc->gc, FG(dc, col));
	+ if(dc->font.set)
	+ XmbDrawString(dc->dpy, dc->canvas, dc->font.set, dc->gc, x, y,…
	+ else {
	+ XSetFont(dc->dpy, dc->gc, dc->font.xfont->fid);
	+ XDrawString(dc->dpy, dc->canvas, dc->gc, x, y, text, n);
	+ }
	+}
	+
	+void
	+eprintf(const char *fmt, ...) {
	+ va_list ap;
	+
	+ va_start(ap, fmt);
	+ vfprintf(stderr, fmt, ap);
	+ va_end(ap);
	+
	+ if(fmt[0] != '\0' && fmt[strlen(fmt)-1] == ':') {
	+ fputc(' ', stderr);
	+ perror(NULL);
	+ }
	+ exit(EXIT_FAILURE);
	+}
	+
	+void
	+freedc(DC *dc) {
	+ if(dc->font.set)
	+ XFreeFontSet(dc->dpy, dc->font.set);
	+ if(dc->font.xfont)
	+ XFreeFont(dc->dpy, dc->font.xfont);
	+ if(dc->canvas)
	+ XFreePixmap(dc->dpy, dc->canvas);
	+ XFreeGC(dc->dpy, dc->gc);
	+ XCloseDisplay(dc->dpy);
	+ free(dc);
	+}
	+
	+unsigned long
	+getcolor(DC dc, const char colstr) {
	+ Colormap cmap = DefaultColormap(dc->dpy, DefaultScreen(dc->dpy));
	+ XColor color;
	+
	+ if(!XAllocNamedColor(dc->dpy, cmap, colstr, &color, &color))
	+ eprintf("cannot allocate color '%s'\n", colstr);
	+ return color.pixel;
	+}
	+
	+DC *
	+initdc(void) {
	+ DC *dc;
	+
	+ if(!setlocale(LC_CTYPE, "") \|\| !XSupportsLocale())
	+ fprintf(stderr, "no locale support\n");
	+ if(!(dc = calloc(1, sizeof *dc)))
	+ eprintf("cannot malloc %u bytes:", sizeof *dc);
	+ if(!(dc->dpy = XOpenDisplay(NULL)))
	+ eprintf("cannot open display\n");
	+
	+ dc->gc = XCreateGC(dc->dpy, DefaultRootWindow(dc->dpy), 0, NULL);
	+ XSetLineAttributes(dc->dpy, dc->gc, 1, LineSolid, CapButt, JoinMiter);
	+ return dc;
	+}
	+
	+void
	+initfont(DC dc, const char fontstr) {
	+ if(!loadfont(dc, fontstr ? fontstr : DEFAULTFN)) {
	+ if(fontstr != NULL)
	+ fprintf(stderr, "cannot load font '%s'\n", fontstr);
	+ if(fontstr == NULL \|\| !loadfont(dc, DEFAULTFN))
	+ eprintf("cannot load font '%s'\n", DEFAULTFN);
	+ }
	+ dc->font.height = dc->font.ascent + dc->font.descent;
	+}
	+
	+Bool
	+loadfont(DC dc, const char fontstr) {
	+ char def, missing, *names;
	+ int i, n = 1;
	+ XFontStruct **xfonts;
	+
	+ if(!*fontstr)
	+ return False;
	+ if((dc->font.set = XCreateFontSet(dc->dpy, fontstr, &missing, &n, &def…
	+ n = XFontsOfFontSet(dc->font.set, &xfonts, &names);
	+ }
	+ else {
	+ dc->font.xfont = XLoadQueryFont(dc->dpy, fontstr);
	+ xfonts = &dc->font.xfont;
	+ }
	+ for(i = 0; i < n; i++) {
	+ dc->font.ascent = MAX(dc->font.ascent, xfonts[i]->ascent);
	+ dc->font.descent = MAX(dc->font.descent, xfonts[i]->descent);
	+ dc->font.width = MAX(dc->font.width, xfonts[i]->max_bounds…
	+ }
	+ if(missing)
	+ XFreeStringList(missing);
	+ return (dc->font.set \|\| dc->font.xfont);
	+}
	+
	+void
	+mapdc(DC *dc, Window win, unsigned int w, unsigned int h) {
	+ XCopyArea(dc->dpy, dc->canvas, win, dc->gc, 0, 0, w, h, 0, 0);
	+}
	+
	+void
	+resizedc(DC *dc, unsigned int w, unsigned int h) {
	+ if(dc->canvas)
	+ XFreePixmap(dc->dpy, dc->canvas);
	+
	+ dc->canvas = XCreatePixmap(dc->dpy, DefaultRootWindow(dc->dpy), w, h,
	+ DefaultDepth(dc->dpy, DefaultScreen(dc->dpy…
	+ dc->w = w;
	+ dc->h = h;
	+}
	+
	+int
	+textnw(DC dc, const char text, size_t len) {
	+ if(dc->font.set) {
	+ XRectangle r;
	+
	+ XmbTextExtents(dc->font.set, text, len, NULL, &r);
	+ return r.width;
	+ }
	+ return XTextWidth(dc->font.xfont, text, len);
	+}
	+
	+int
	+textw(DC dc, const char text) {
	+ return textnw(dc, text, strlen(text)) + dc->font.height;
	+}
	diff --git a/draw.h b/draw.h
	t@@ -0,0 +1,35 @@
	+/* See LICENSE file for copyright and license details. */
	+
	+#define FG(dc, col) ((col)[(dc)->invert ? ColBG : ColFG])
	+#define BG(dc, col) ((col)[(dc)->invert ? ColFG : ColBG])
	+
	+enum { ColBG, ColFG, ColBorder, ColLast };
	+
	+typedef struct {
	+ int x, y, w, h;
	+ Bool invert;
	+ Display *dpy;
	+ GC gc;
	+ Pixmap canvas;
	+ struct {
	+ int ascent;
	+ int descent;
	+ int height;
	+ int width;
	+ XFontSet set;
	+ XFontStruct *xfont;
	+ } font;
	+} DC; /* draw context */
	+
	+void drawrect(DC *dc, int x, int y, unsigned int w, unsigned int h, Bool fill,…
	+void drawtext(DC dc, const char text, unsigned long col[ColLast]);
	+void drawtextn(DC dc, const char text, size_t n, unsigned long col[ColLast]);
	+void eprintf(const char *fmt, ...);
	+void freedc(DC *dc);
	+unsigned long getcolor(DC dc, const char colstr);
	+DC *initdc(void);
	+void initfont(DC dc, const char fontstr);
	+void mapdc(DC *dc, Window win, unsigned int w, unsigned int h);
	+void resizedc(DC *dc, unsigned int w, unsigned int h);
	+int textnw(DC dc, const char text, size_t len);
	+int textw(DC dc, const char text);