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drw.c
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drw.c
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/* See LICENSE file for copyright and license details. */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <X11/Xlib.h>
#include <X11/Xft/Xft.h>
#include "drw.h"
#include "util.h"
Drw *
drw_create(Display *dpy, int screen, Window root, unsigned int w, unsigned int h) {
Drw *drw = (Drw *)calloc(1, sizeof(Drw));
if(!drw)
return NULL;
drw->dpy = dpy;
drw->screen = screen;
drw->root = root;
drw->w = w;
drw->h = h;
drw->drawable = XCreatePixmap(dpy, root, w, h, DefaultDepth(dpy, screen));
drw->gc = XCreateGC(dpy, root, 0, NULL);
XSetLineAttributes(dpy, drw->gc, 1, LineSolid, CapButt, JoinMiter);
return drw;
}
void
drw_resize(Drw *drw, unsigned int w, unsigned int h) {
if(!drw)
return;
drw->w = w;
drw->h = h;
if(drw->drawable != 0)
XFreePixmap(drw->dpy, drw->drawable);
drw->drawable = XCreatePixmap(drw->dpy, drw->root, w, h, DefaultDepth(drw->dpy, drw->screen));
}
void
drw_free(Drw *drw) {
XFreePixmap(drw->dpy, drw->drawable);
XFreeGC(drw->dpy, drw->gc);
free(drw);
}
Fnt *
drw_font_create(Display *dpy, int screen, const char *fontname) {
Fnt *font;
font = (Fnt *)calloc(1, sizeof(Fnt));
if(!font)
return NULL;
if(!(font->xfont = XftFontOpenName(dpy,screen,fontname))
&& !(font->xfont = XftFontOpenName(dpy,screen,"fixed")))
die("error, cannot load font: '%s'\n", fontname);
font->ascent = font->xfont->ascent;
font->descent = font->xfont->descent;
font->h = font->ascent + font->descent;
return font;
}
void
drw_font_free(Display *dpy, Fnt *font) {
if(!font)
return;
XftFontClose(dpy, font->xfont);
free(font);
}
Clr *
drw_clr_create(Drw *drw, const char *clrname) {
Clr *clr;
XftColor color;
if(!drw)
return NULL;
clr = (Clr *)calloc(1, sizeof(Clr));
if(!clr)
return NULL;
if(!XftColorAllocName(drw->dpy, DefaultVisual(drw->dpy, drw->screen), DefaultColormap(drw->dpy, drw->screen), clrname, &color))
die("error, cannot allocate color '%s'\n", clrname);
clr->xftc = color;
return clr;
}
void
drw_clr_free(Clr *clr) {
if(clr)
free(clr);
}
void
drw_setfont(Drw *drw, Fnt *font) {
if(drw)
drw->font = font;
}
void
drw_setscheme(Drw *drw, ClrScheme *scheme) {
if(drw && scheme)
drw->scheme = scheme;
}
void
drw_rect(Drw *drw, int x, int y, unsigned int w, unsigned int h, int filled, int empty, int invert) {
int dx;
if(!drw || !drw->font || !drw->scheme)
return;
XSetForeground(drw->dpy, drw->gc, invert ? drw->scheme->bg->rgb : drw->scheme->fg->rgb);
dx = (drw->font->ascent + drw->font->descent + 2) / 4;
if(filled)
XFillRectangle(drw->dpy, drw->drawable, drw->gc, x+1, y+1, dx+1, dx+1);
else if(empty)
XDrawRectangle(drw->dpy, drw->drawable, drw->gc, x+1, y+1, dx, dx);
}
void
drw_underbar(Drw *drw, int x, int y, unsigned int w, unsigned int h, int active) {
int dy;
if(!drw || !drw->font || !drw->scheme)
return;
if(active)
XSetForeground(drw->dpy, drw->gc, drw->scheme->border->rgb);
else
XSetForeground(drw->dpy, drw->gc, drw->scheme->fg->rgb);
dy = (drw->font->ascent + drw->font->descent + 2) / 8;
XFillRectangle(drw->dpy, drw->drawable, drw->gc, x, y + h - dy, w, dy);
}
void
drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, const char *text) {
char buf[256];
int i, tx, ty, th, len, olen;
Extnts tex;
XftDraw *d;
if(!drw || !drw->scheme)
return;
XSetForeground(drw->dpy, drw->gc, drw->scheme->bg->rgb);
XFillRectangle(drw->dpy, drw->drawable, drw->gc, x, y, w, h);
if(!text || !drw->font)
return;
olen = strlen(text);
drw_font_getexts(drw, text, olen, &tex);
/* shorten text if necessary */
for(len = MIN(olen, sizeof buf); len && (tex.w > w - tex.h || w < tex.h); len--)
drw_font_getexts(drw, text, len, &tex);
if(!len)
return;
memcpy(buf, text, len);
if(len < olen)
for(i = len; i && i > len - 3; buf[--i] = '.');
th = drw->font->ascent + drw->font->descent;
ty = y + (h / 2) - (th / 2) + drw->font->ascent;
tx = x + (w / 2) - (tex.w / 2);
d = XftDrawCreate(drw->dpy, drw->drawable, DefaultVisual(drw->dpy, drw->screen), DefaultColormap(drw->dpy, drw->screen));
XftDrawStringUtf8(d, &drw->scheme->fg->xftc, drw->font->xfont, tx, ty, (XftChar8 *) buf, len);
XftDrawDestroy(d);
}
void
drw_map(Drw *drw, Window win, int x, int y, unsigned int w, unsigned int h) {
if(!drw)
return;
XCopyArea(drw->dpy, drw->drawable, win, drw->gc, x, y, w, h, x, y);
XSync(drw->dpy, False);
}
void
drw_font_getexts(Drw *drw, const char *text, unsigned int len, Extnts *tex) {
if(!drw || !text)
return;
XGlyphInfo ext;
XftTextExtentsUtf8(drw->dpy, drw->font->xfont, (XftChar8 *) text, len, &ext);
tex->w = ext.xOff;
tex->h = ext.yOff;
}
unsigned int
drw_font_getexts_width(Drw *drw, const char *text, unsigned int len) {
Extnts tex;
if(!drw)
return -1;
drw_font_getexts(drw, text, len, &tex);
return tex.w;
}
Cur *
drw_cur_create(Drw *drw, int shape) {
Cur *cur = (Cur *)calloc(1, sizeof(Cur));
if(!drw || !cur)
return NULL;
cur->cursor = XCreateFontCursor(drw->dpy, shape);
return cur;
}
void
drw_cur_free(Drw *drw, Cur *cursor) {
if(!drw || !cursor)
return;
XFreeCursor(drw->dpy, cursor->cursor);
free(cursor);
}