X-Git-Url: https://jasonwoof.com/gitweb/?p=dwm.git;a=blobdiff_plain;f=draw.c;h=341a26f0f9625746741f98e16cb21e729e469ecd;hp=455c137e5b64aa128c2e4fb9d0264ea67cd18f9f;hb=e7d41cc18824114300a09d3bdb26c536f30b466e;hpb=650a1fb4e1a798aca48a53739f5bb2649191bc1c

diff --git a/draw.c b/draw.c
index 455c137..341a26f 100644
--- a/draw.c
+++ b/draw.c
@@ -1,171 +1,176 @@
-/*
- * (C)opyright MMIV-MMVI Anselm R. Garbe <garbeam at gmail dot com>
- * See LICENSE file for license details.
- */
-
+/* 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);
 
-#include <X11/Xlocale.h>
-
-#include "wm.h"
-
-static void
-drawborder(void)
-{
-	XPoint points[5];
-	XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
-	XSetForeground(dpy, dc.gc, dc.border);
-	points[0].x = dc.x;
-	points[0].y = dc.y;
-	points[1].x = dc.w - 1;
-	points[1].y = 0;
-	points[2].x = 0;
-	points[2].y = dc.h - 1;
-	points[3].x = -(dc.w - 1);
-	points[3].y = 0;
-	points[4].x = 0;
-	points[4].y = -(dc.h - 1);
-	XDrawLines(dpy, dc.drawable, dc.gc, points, 5, CoordModePrevious);
+void
+drawrect(DC *dc, int x, int y, unsigned int w, unsigned int h, Bool fill, unsigned long color) {
+	XSetForeground(dc->dpy, dc->gc, color);
+	if(fill)
+		XFillRectangle(dc->dpy, dc->canvas, dc->gc, dc->x + x, dc->y + y, w, h);
+	else
+		XDrawRectangle(dc->dpy, dc->canvas, dc->gc, dc->x + x, dc->y + y, w-1, h-1);
 }
 
 void
-draw(Bool border, const char *text)
-{
-	int x, y, w, h;
-	unsigned int len;
-	static char buf[256];
-	XGCValues gcv;
-	XRectangle r = { dc.x, dc.y, dc.w, dc.h };
-
-	XSetForeground(dpy, dc.gc, dc.bg);
-	XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
-
-	w = 0;
-	if(border)
-		drawborder();
-
-	if(!text)
-		return;
-
-	len = strlen(text);
-	if(len >= sizeof(buf))
-		len = sizeof(buf) - 1;
-	memcpy(buf, text, len);
-	buf[len] = 0;
-
-	h = dc.font.ascent + dc.font.descent;
-	y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent;
-	x = dc.x + (h / 2);
+drawtext(DC *dc, const char *text, unsigned long col[ColLast]) {
+	char buf[BUFSIZ];
+	size_t mn, n = strlen(text);
 
 	/* shorten text if necessary */
-	while(len && (w = textnw(&dc.font, buf, len)) > dc.w - h)
-		buf[--len] = 0;
-
-	if(w > dc.w)
-		return; /* too long */
-
-	gcv.foreground = dc.fg;
-	gcv.background = dc.bg;
-	if(dc.font.set) {
-		XChangeGC(dpy, dc.gc, GCForeground | GCBackground, &gcv);
-		XmbDrawImageString(dpy, dc.drawable, dc.font.set, dc.gc,
-				x, y, buf, len);
-	}
+	for(mn = MIN(n, sizeof buf); textnw(dc, text, mn) + dc->font.height/2 > dc->w; mn--)
+		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, text, n);
 	else {
-		gcv.font = dc.font.xfont->fid;
-		XChangeGC(dpy, dc.gc, GCForeground | GCBackground | GCFont, &gcv);
-		XDrawImageString(dpy, dc.drawable, dc.gc, x, y, buf, len);
+		XSetFont(dc->dpy, dc->gc, dc->font.xfont->fid);
+		XDrawString(dc->dpy, dc->canvas, dc->gc, x, y, text, n);
 	}
 }
 
-static unsigned long
-xinitcolors(Colormap cmap, const char *colstr)
-{
-	XColor color;
-	XAllocNamedColor(dpy, cmap, colstr, &color, &color);
-	return color.pixel;
+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
-initcolors(const char *bg, const char *fg, const char *border)
-{
-	Colormap cmap = DefaultColormap(dpy, screen);
-	dc.bg = xinitcolors(cmap, bg);
-	dc.fg = xinitcolors(cmap, fg);
-	dc.border = xinitcolors(cmap, border);
+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 int
-textnw(Fnt *font, char *text, unsigned int len)
-{
-	XRectangle r;
-	if(font->set) {
-		XmbTextExtents(font->set, text, len, NULL, &r);
-		return r.width;
-	}
-	return XTextWidth(font->xfont, text, len);
-}
+unsigned long
+getcolor(DC *dc, const char *colstr) {
+	Colormap cmap = DefaultColormap(dc->dpy, DefaultScreen(dc->dpy));
+	XColor color;
 
-unsigned int
-textw(Fnt *font, char *text)
-{
-	return textnw(font, text, strlen(text));
+	if(!XAllocNamedColor(dc->dpy, cmap, colstr, &color, &color))
+		eprintf("cannot allocate color '%s'\n", colstr);
+	return color.pixel;
 }
 
-unsigned int
-texth(Fnt *font)
-{
-	return font->height + 4;
+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(Fnt *font, const char *fontstr)
-{
-	char **missing, *def;
-	int i, n;
-
-	missing = NULL;
-	setlocale(LC_ALL, "");
-	if(font->set)
-		XFreeFontSet(dpy, font->set);
-	font->set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
-	if(missing) {
-		while(n--)
-			fprintf(stderr, "missing fontset: %s\n", missing[n]);
-		XFreeStringList(missing);
-		if(font->set) {
-			XFreeFontSet(dpy, font->set);
-			font->set = NULL;
-		}
+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);
 	}
-	if(font->set) {
-		XFontSetExtents *font_extents;
-		XFontStruct **xfonts;
-		char **font_names;
-
-		font->ascent = font->descent = 0;
-		font_extents = XExtentsOfFontSet(font->set);
-		n = XFontsOfFontSet(font->set, &xfonts, &font_names);
-		for(i = 0, font->ascent = 0, font->descent = 0; i < n; i++) {
-			if(font->ascent < (*xfonts)->ascent)
-				font->ascent = (*xfonts)->ascent;
-			if(font->descent < (*xfonts)->descent)
-				font->descent = (*xfonts)->descent;
-			xfonts++;
-		}
+	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 {
-		if(font->xfont)
-			XFreeFont(dpy, font->xfont);
-		font->xfont = NULL;
-		font->xfont = XLoadQueryFont(dpy, fontstr);
-		if (!font->xfont)
-			font->xfont = XLoadQueryFont(dpy, "fixed");
-		if (!font->xfont)
-			error("error, cannot init 'fixed' font\n");
-		font->ascent = font->xfont->ascent;
-		font->descent = font->xfont->descent;
+		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.width);
+	}
+	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;
 	}
-	font->height = font->ascent + font->descent;
+	return XTextWidth(dc->font.xfont, text, len);
+}
+
+int
+textw(DC *dc, const char *text) {
+	return textnw(dc, text, strlen(text)) + dc->font.height;
 }