initial import

1 files changed, 171 insertions, 0 deletions

diff --git a/draw.c b/draw.c
new file mode 100644
index 0000000..d747629
--- /dev/null
+++ b/draw.c
@@ -0,0 +1,171 @@
+/*
+ * (C)opyright MMIV-MMVI Anselm R. Garbe <garbeam at gmail dot com>
+ * See LICENSE file for license details.
+ */
+
+#include <stdio.h>
+#include <string.h>
+
+#include "dmenu.h"
+
+static void
+drawborder(Display *dpy, Brush *b)
+{
+	XPoint points[5];
+	XSetLineAttributes(dpy, b->gc, 1, LineSolid, CapButt, JoinMiter);
+	XSetForeground(dpy, b->gc, b->border);
+	points[0].x = b->x;
+	points[0].y = b->y;
+	points[1].x = b->w - 1;
+	points[1].y = 0;
+	points[2].x = 0;
+	points[2].y = b->h - 1;
+	points[3].x = -(b->w - 1);
+	points[3].y = 0;
+	points[4].x = 0;
+	points[4].y = -(b->h - 1);
+	XDrawLines(dpy, b->drawable, b->gc, points, 5, CoordModePrevious);
+}
+
+void
+draw(Display *dpy, Brush *b, Bool border, const char *text)
+{
+	unsigned int x, y, w, h, len;
+	static char buf[256];
+	XGCValues gcv;
+	XRectangle r = { b->x, b->y, b->w, b->h };
+
+	XSetForeground(dpy, b->gc, b->bg);
+	XFillRectangles(dpy, b->drawable, b->gc, &r, 1);
+
+	w = 0;
+	if(border)
+		drawborder(dpy, b);
+
+	if(!text)
+		return;
+
+	len = strlen(text);
+	if(len >= sizeof(buf))
+		len = sizeof(buf) - 1;
+	memcpy(buf, text, len);
+	buf[len] = 0;
+
+	h = b->font.ascent + b->font.descent;
+	y = b->y + (b->h / 2) - (h / 2) + b->font.ascent;
+	x = b->x + (h / 2);
+
+	/* shorten text if necessary */
+	while(len && (w = textnw(&b->font, buf, len)) > b->w - h)
+		buf[--len] = 0;
+
+	if(w > b->w)
+		return; /* too long */
+
+	gcv.foreground = b->fg;
+	gcv.background = b->bg;
+	if(b->font.set) {
+		XChangeGC(dpy, b->gc, GCForeground | GCBackground, &gcv);
+		XmbDrawImageString(dpy, b->drawable, b->font.set, b->gc,
+				x, y, buf, len);
+	}
+	else {
+		gcv.font = b->font.xfont->fid;
+		XChangeGC(dpy, b->gc, GCForeground | GCBackground | GCFont, &gcv);
+		XDrawImageString(dpy, b->drawable, b->gc, x, y, buf, len);
+	}
+}
+
+static unsigned long
+xloadcolors(Display *dpy, Colormap cmap, const char *colstr)
+{
+	XColor color;
+	XAllocNamedColor(dpy, cmap, colstr, &color, &color);
+	return color.pixel;
+}
+
+void
+loadcolors(Display *dpy, int screen, Brush *b,
+		const char *bg, const char *fg, const char *border)
+{
+	Colormap cmap = DefaultColormap(dpy, screen);
+	b->bg = xloadcolors(dpy, cmap, bg);
+	b->fg = xloadcolors(dpy, cmap, fg);
+	b->border = xloadcolors(dpy, cmap, border);
+}
+
+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 int
+textw(Fnt *font, char *text)
+{
+	return textnw(font, text, strlen(text));
+}
+
+unsigned int
+texth(Fnt *font)
+{
+	return font->height + 4;
+}
+
+void
+loadfont(Display *dpy, Fnt *font, const char *fontstr)
+{
+	char **missing, *def;
+	int n;
+
+	missing = NULL;
+	def = "?";
+	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;
+		}
+	}
+	if(font->set) {
+		XFontSetExtents *font_extents;
+		XFontStruct **xfonts;
+		char **font_names;
+		unsigned int i;
+
+		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++;
+		}
+	}
+	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)
+			eprint("error, cannot load 'fixed' font\n");
+		font->ascent = font->xfont->ascent;
+		font->descent = font->xfont->descent;
+	}
+	font->height = font->ascent + font->descent;
+}