-/*
- * (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"
-#include "util.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->rect.x;
- points[0].y = b->rect.y;
- points[1].x = b->rect.width - 1;
- points[1].y = 0;
- points[2].x = 0;
- points[2].y = b->rect.height - 1;
- points[3].x = -(b->rect.width - 1);
- points[3].y = 0;
- points[4].x = 0;
- points[4].y = -(b->rect.height - 1);
- XDrawLines(dpy, b->drawable, b->gc, points, 5, CoordModePrevious);
+
+#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, 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(Display *dpy, Brush *b, Bool border, const char *text)
-{
- unsigned int x, y, w, h, len;
- static char buf[256];
- XGCValues gcv;
+drawtext(DC *dc, const char *text, unsigned long col[ColLast]) {
+ char buf[BUFSIZ];
+ size_t mn, n = strlen(text);
- XSetForeground(dpy, b->gc, b->bg);
- XFillRectangles(dpy, b->drawable, b->gc, &b->rect, 1);
+ /* shorten text if necessary */
+ 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);
+}
- if(border)
- drawborder(dpy, b);
+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;
- if(!text)
- return;
+ 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 {
+ XSetFont(dc->dpy, dc->gc, dc->font.xfont->fid);
+ XDrawString(dc->dpy, dc->canvas, dc->gc, x, y, text, n);
+ }
+}
- len = strlen(text);
- if(len >= sizeof(buf))
- len = sizeof(buf) - 1;
- memcpy(buf, text, len);
- buf[len] = 0;
+void
+eprintf(const char *fmt, ...) {
+ va_list ap;
- h = b->font.ascent + b->font.descent;
- y = b->rect.y + (b->rect.height / 2) - (h / 2) + b->font.ascent;
- x = b->rect.x + (h / 2);
+ va_start(ap, fmt);
+ vfprintf(stderr, fmt, ap);
+ va_end(ap);
- /* shorten text if necessary */
- while(len && (w = textwidth_l(&b->font, buf, len)) > b->rect.width - h)
- buf[--len] = 0;
-
- if(w > b->rect.width)
- 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);
+ if(fmt[0] != '\0' && fmt[strlen(fmt)-1] == ':') {
+ fputc(' ', stderr);
+ perror(NULL);
}
+ exit(EXIT_FAILURE);
}
-static unsigned long
-xloadcolors(Display *dpy, Colormap cmap, const char *colstr)
-{
+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;
- XAllocNamedColor(dpy, cmap, colstr, &color, &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
-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);
+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;
}
-unsigned int
-textwidth_l(Fnt *font, char *text, unsigned int len)
-{
- if(font->set) {
- XRectangle r;
- XmbTextExtents(font->set, text, len, 0, &r);
- return r.width;
+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;
}
- return XTextWidth(font->xfont, text, len);
+ 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);
}
-unsigned int
-textwidth(Fnt *font, char *text)
-{
- return textwidth_l(font, text, strlen(text));
+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
-loadfont(Display *dpy, Fnt *font, const char *fontstr)
-{
- char **missing, *def;
- int n;
-
- missing = 0;
- 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 = 0;
- }
- }
- 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 = 0;
- font->xfont = XLoadQueryFont(dpy, fontstr);
- if (!font->xfont)
- font->xfont = XLoadQueryFont(dpy, "fixed");
- if (!font->xfont)
- error("error, cannot load 'fixed' font\n");
- font->ascent = font->xfont->ascent;
- font->descent = font->xfont->descent;
+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);
}
-unsigned int
-labelheight(Fnt *font)
-{
- return font->height + 4;
+int
+textw(DC *dc, const char *text) {
+ return textnw(dc, text, strlen(text)) + dc->font.height;
}
Got questions, comments, patches, etc.? Contact Jason Woofenden