X-Git-Url: https://git.danieliu.xyz/?a=blobdiff_plain;f=draw.c;h=41022f03c38041695c15b3770d1ba5cc6ef28b45;hb=08b264393d41321c1b7ae3644f73c67cb825c95c;hp=75075952cab9948e377760e3611c2d7200d7520c;hpb=b497a13bde8a02ea42a1f475d76a47eca37babd1;p=dmenu.git

diff --git a/draw.c b/draw.c
index 7507595..41022f0 100644
--- a/draw.c
+++ b/draw.c
@@ -1,159 +1,143 @@
-/*
- * (C)opyright MMIV-MMVI Anselm R. Garbe <garbeam at gmail dot com>
- * See LICENSE file for license details.
- */
-#include "dmenu.h"
-#include <stdio.h>
-#include <string.h>
-#include <X11/Xlocale.h>
-
-/* static */
-
-static void
-drawborder(void)
-{
-	XPoint points[5];
+/* See LICENSE file for copyright and license details. */
 
-	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);
-}
+/* enums */
+enum { ColFG, ColBG, ColLast };
 
-static unsigned int
-textnw(const char *text, unsigned int len)
-{
-	XRectangle r;
+/* typedefs */
+typedef struct {
+	int x, y, w, h;
+	unsigned long norm[ColLast];
+	unsigned long sel[ColLast];
+	Drawable drawable;
+	GC gc;
+	struct {
+		XFontStruct *xfont;
+		XFontSet set;
+		int ascent;
+		int descent;
+		int height;
+	} font;
+} DC; /* draw context */
+
+/* forward declarations */
+static void dccleanup(void);
+static void dcsetup(void);
+static void drawtext(const char *text, unsigned long col[ColLast]);
+static unsigned long getcolor(const char *colstr);
+static void initfont(const char *fontstr);
+static int textnw(const char *text, unsigned int len);
+static int textw(const char *text);
+
+static DC dc;
 
-	if(dc.font.set) {
-		XmbTextExtents(dc.font.set, text, len, NULL, &r);
-		return r.width;
-	}
-	return XTextWidth(dc.font.xfont, text, len);
+void
+dccleanup(void) {
+	if(dc.font.set)
+		XFreeFontSet(dpy, dc.font.set);
+	else
+		XFreeFont(dpy, dc.font.xfont);
+	XFreePixmap(dpy, dc.drawable);
+	XFreeGC(dpy, dc.gc);
 }
 
-/* extern */
+void
+dcsetup(void) {
+	/* style */
+	dc.norm[ColBG] = getcolor(normbgcolor);
+	dc.norm[ColFG] = getcolor(normfgcolor);
+	dc.sel[ColBG] = getcolor(selbgcolor);
+	dc.sel[ColFG] = getcolor(selfgcolor);
+	initfont(font);
+
+	/* pixmap */
+	dc.drawable = XCreatePixmap(dpy, parent, mw, mh, DefaultDepth(dpy, screen));
+	dc.gc = XCreateGC(dpy, parent, 0, NULL);
+	XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
+	if(!dc.font.set)
+		XSetFont(dpy, dc.gc, dc.font.xfont->fid);
+}
 
 void
-drawtext(const char *text, Bool invert, Bool border)
-{
-	int x, y, w, h;
-	static char buf[256];
-	unsigned int len;
-	XGCValues gcv;
+drawtext(const char *text, unsigned long col[ColLast]) {
+	char buf[256];
+	int i, x, y, h, len, olen;
 	XRectangle r = { dc.x, dc.y, dc.w, dc.h };
 
-	XSetForeground(dpy, dc.gc, invert ? dc.fg : dc.bg);
+	XSetForeground(dpy, dc.gc, col[ColBG]);
 	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;
+	olen = strlen(text);
+	h = dc.font.height;
+	y = dc.y + ((h+2) / 2) - (h / 2) + dc.font.ascent;
 	x = dc.x + (h / 2);
-
 	/* shorten text if necessary */
-	while(len && (w = textnw(buf, len)) > dc.w - h)
-		buf[--len] = 0;
-
-	if(w > dc.w)
-		return; /* too long */
-
-	gcv.foreground = invert ? dc.bg : dc.fg;
-	gcv.background = invert ? dc.fg : 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);
-	}
-	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);
-	}
+	for(len = MIN(olen, sizeof buf); len && textnw(text, len) > dc.w - h; len--);
+	if(!len)
+		return;
+	memcpy(buf, text, len);
+	if(len < olen)
+		for(i = len; i && i > len - 3; buf[--i] = '.');
+	XSetForeground(dpy, dc.gc, col[ColFG]);
+	if(dc.font.set)
+		XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len);
+	else
+		XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
 }
 
 unsigned long
-getcolor(const char *colstr)
-{
+getcolor(const char *colstr) {
 	Colormap cmap = DefaultColormap(dpy, screen);
 	XColor color;
 
-	XAllocNamedColor(dpy, cmap, colstr, &color, &color);
+	if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
+		eprint("drawtext: cannot allocate color '%s'\n", colstr);
 	return color.pixel;
 }
 
 void
-setfont(const char *fontstr)
-{
-	char **missing, *def;
+initfont(const char *fontstr) {
+	char *def, **missing = NULL;
 	int i, n;
 
-	missing = NULL;
-	setlocale(LC_ALL, "");
-	if(dc.font.set)
-		XFreeFontSet(dpy, dc.font.set);
+	if(!fontstr || fontstr[0] == '\0')
+		eprint("drawtext: cannot load font: '%s'\n", fontstr);
 	dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
-	if(missing) {
+	if(missing)
 		XFreeStringList(missing);
-		if(dc.font.set) {
-			XFreeFontSet(dpy, dc.font.set);
-			dc.font.set = NULL;
-		}
-	}
 	if(dc.font.set) {
-		XFontSetExtents *font_extents;
 		XFontStruct **xfonts;
 		char **font_names;
-
 		dc.font.ascent = dc.font.descent = 0;
-		font_extents = XExtentsOfFontSet(dc.font.set);
 		n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
-		for(i = 0, dc.font.ascent = 0, dc.font.descent = 0; i < n; i++) {
-			if(dc.font.ascent < (*xfonts)->ascent)
-				dc.font.ascent = (*xfonts)->ascent;
-			if(dc.font.descent < (*xfonts)->descent)
-				dc.font.descent = (*xfonts)->descent;
+		for(i = 0; i < n; i++) {
+			dc.font.ascent = MAX(dc.font.ascent, (*xfonts)->ascent);
+			dc.font.descent = MAX(dc.font.descent, (*xfonts)->descent);
 			xfonts++;
 		}
 	}
 	else {
-		if(dc.font.xfont)
-			XFreeFont(dpy, dc.font.xfont);
-		dc.font.xfont = NULL;
-		dc.font.xfont = XLoadQueryFont(dpy, fontstr);
-		if (!dc.font.xfont)
-			dc.font.xfont = XLoadQueryFont(dpy, "fixed");
-		if (!dc.font.xfont)
-			eprint("error, cannot init 'fixed' font\n");
+		if(!(dc.font.xfont = XLoadQueryFont(dpy, fontstr))
+		&& !(dc.font.xfont = XLoadQueryFont(dpy, "fixed")))
+			eprint("drawtext: cannot load font: '%s'\n", fontstr);
 		dc.font.ascent = dc.font.xfont->ascent;
 		dc.font.descent = dc.font.xfont->descent;
 	}
 	dc.font.height = dc.font.ascent + dc.font.descent;
 }
 
-unsigned int
-textw(const char *text)
-{
+int
+textnw(const char *text, unsigned int len) {
+	XRectangle r;
+
+	if(dc.font.set) {
+		XmbTextExtents(dc.font.set, text, len, NULL, &r);
+		return r.width;
+	}
+	return XTextWidth(dc.font.xfont, text, len);
+}
+
+int
+textw(const char *text) {
 	return textnw(text, strlen(text)) + dc.font.height;
 }