typo fixes

[dmenu.git] / draw.c

diff --git a/draw.c b/draw.c
index 72439c5..41022f0 100644 (file)
--- a/draw.c
+++ b/draw.c
@@ -1,42 +1,83 @@
 /* See LICENSE file for copyright and license details. */
-#include "dmenu.h"
-#include <string.h>
 
-/* extern */
+/* enums */
+enum { ColFG, ColBG, ColLast };
+
+/* 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;
+
+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);
+}
+
+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, unsigned long col[ColLast]) {
-       int x, y, w, h;
-       static char buf[256];
-       unsigned int len, olen;
+       char buf[256];
+       int i, x, y, h, len, olen;
        XRectangle r = { dc.x, dc.y, dc.w, dc.h };
 
        XSetForeground(dpy, dc.gc, col[ColBG]);
        XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
        if(!text)
                return;
-       w = 0;
-       olen = 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(len < olen) {
-               if(len > 1)
-                       buf[len - 1] = '.';
-               if(len > 2)
-                       buf[len - 2] = '.';
-               if(len > 3)
-                       buf[len - 3] = '.';
-       }
-       if(w > dc.w)
-               return; /* too long */
+       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);
@@ -44,12 +85,48 @@ drawtext(const char *text, unsigned long col[ColLast]) {
                XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
 }
 
-unsigned int
-textw(const char *text) {
-       return textnw(text, strlen(text)) + dc.font.height;
+unsigned long
+getcolor(const char *colstr) {
+       Colormap cmap = DefaultColormap(dpy, screen);
+       XColor color;
+
+       if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
+               eprint("drawtext: cannot allocate color '%s'\n", colstr);
+       return color.pixel;
+}
+
+void
+initfont(const char *fontstr) {
+       char *def, **missing = NULL;
+       int i, n;
+
+       if(!fontstr || fontstr[0] == '\0')
+               eprint("drawtext: cannot load font: '%s'\n", fontstr);
+       dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
+       if(missing)
+               XFreeStringList(missing);
+       if(dc.font.set) {
+               XFontStruct **xfonts;
+               char **font_names;
+               dc.font.ascent = dc.font.descent = 0;
+               n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
+               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 = 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
+int
 textnw(const char *text, unsigned int len) {
        XRectangle r;
 
@@ -59,3 +136,8 @@ textnw(const char *text, unsigned int len) {
        }
        return XTextWidth(dc.font.xfont, text, len);
 }
+
+int
+textw(const char *text) {
+       return textnw(text, strlen(text)) + dc.font.height;
+}