Initial commit

1 files changed, 313 insertions, 0 deletions

diff --git a/drw.c b/drw.c
new file mode 100644
index 0000000..f02d26c
--- /dev/null
+++ b/drw.c
@@ -0,0 +1,313 @@
+/* See LICENSE file for copyright and license details. */
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <X11/Xlib.h>
+
+#include "drw.h"
+#include "util.h"
+
+#ifdef CONFIG_DWM_PANGO
+//char stext[512];
+//extern Bool statusmarkup;
+#endif
+
+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, const char *fontname) {
+	Fnt *font;
+	char *def, **missing;
+	int n;
+
+	font = (Fnt *)calloc(1, sizeof(Fnt));
+	if(!font)
+		return NULL;
+
+#ifdef CONFIG_DWM_PANGO
+	PangoFontMap *fontmap;
+	PangoContext *context;
+	PangoFontDescription *desc;
+	PangoFontMetrics *metrics;
+
+	int screen = DefaultScreen(dpy);
+	fontmap = pango_xft_get_font_map(dpy, screen);
+	context = pango_font_map_create_context(fontmap);
+	desc = pango_font_description_from_string(fontname);
+	font->layout = pango_layout_new(context);
+	pango_layout_set_font_description(font->layout, desc);
+
+	metrics = pango_context_get_metrics(context, desc, NULL);
+	font->ascent = pango_font_metrics_get_ascent(metrics) / PANGO_SCALE;
+	font->descent = pango_font_metrics_get_descent(metrics) / PANGO_SCALE;
+	font->h = font->ascent + font->descent;
+
+	pango_font_metrics_unref(metrics);
+	g_object_unref(context);
+#else
+	font->set = XCreateFontSet(dpy, fontname, &missing, &n, &def);
+	if(missing) {
+		while(n--)
+			fprintf(stderr, "drw: missing fontset: %s\n", missing[n]);
+		XFreeStringList(missing);
+	}
+	if(font->set) {
+		XFontStruct **xfonts;
+		char **font_names;
+		XExtentsOfFontSet(font->set);
+		n = XFontsOfFontSet(font->set, &xfonts, &font_names);
+		while(n--) {
+			font->ascent = MAX(font->ascent, (*xfonts)->ascent);
+			font->descent = MAX(font->descent,(*xfonts)->descent);
+			xfonts++;
+		}
+	}
+	else {
+		if(!(font->xfont = XLoadQueryFont(dpy, fontname))
+		&& !(font->xfont = XLoadQueryFont(dpy, "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;
+#endif
+	return font;
+}
+
+void
+drw_font_free(Display *dpy, Fnt *font) {
+	if(!font)
+		return;
+#ifdef CONFIG_DWM_PANGO
+	g_object_unref(font->layout);
+#else
+	if(font->set)
+		XFreeFontSet(dpy, font->set);
+	else
+		XFreeFont(dpy, font->xfont);
+#endif
+	free(font);
+}
+
+Clr *
+#ifdef CONFIG_DWM_PANGO
+drw_clr_create(Drw *drw, const char *clrname, XftColor *color) {
+#else
+drw_clr_create(Drw *drw, const char *clrname) {
+#endif
+	Clr *clr;
+	Colormap cmap;
+#ifdef CONFIG_DWM_PANGO
+	Visual *vis = DefaultVisual(drw->dpy, drw->screen);
+#else
+	XColor color;
+#endif
+
+	if(!drw)
+		return NULL;
+	clr = (Clr *)calloc(1, sizeof(Clr));
+	if(!clr)
+		return NULL;
+	cmap = DefaultColormap(drw->dpy, drw->screen);
+
+#ifdef CONFIG_DWM_PANGO
+	if(!XftColorAllocName(drw->dpy, vis, cmap, clrname, color))
+#else
+	if(!XAllocNamedColor(drw->dpy, cmap, clrname, &color, &color))
+#endif
+
+		die("error, cannot allocate color '%s'\n", clrname);
+
+#ifdef CONFIG_DWM_PANGO
+	clr->rgb = color->pixel;
+#else
+	clr->rgb = color.pixel;
+#endif
+
+	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_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, const char *text, int invert) {
+#ifdef CONFIG_DWM_PANGO
+	char buf[512];
+#else
+	char buf[256];
+#endif
+	int i, tx, ty, th, len, olen;
+	Extnts tex;
+
+	if(!drw || !drw->scheme)
+		return;
+	XSetForeground(drw->dpy, drw->gc, invert ? drw->scheme->fg->rgb : 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->font, text, olen, &tex);
+	th = drw->font->ascent + drw->font->descent;
+#ifdef CONFIG_DWM_PANGO
+	ty = y + (h / 2) - (th / 2);
+#else
+	ty = y + (h / 2) - (th / 2) + drw->font->ascent;
+#endif
+	tx = x + (h / 2);
+	/* shorten text if necessary */
+	/* shorten text if necessary (this could wreak havoc with pango markup but fortunately
+	   dc.w is adjusted to the width of the status text and not the other way around) */
+	for(len = MIN(olen, sizeof buf); len && (tex.w > w - tex.h || w < tex.h); len--)
+		drw_font_getexts(drw->font, text, len, &tex);
+	if(!len)
+		return;
+	memcpy(buf, text, len);
+	if(len < olen)
+		for(i = len; i && i > len - 3; buf[--i] = '.');
+#ifdef CONFIG_DWM_PANGO
+	//if(text == stext && statusmarkup)
+	//	pango_layout_set_markup(drw->font->layout, buf, len);
+	//else
+		pango_layout_set_text(drw->font->layout, buf, len);
+	//pango_xft_render_layout(drw->xft.drawable,
+	//	(struct XftColor*)(invert ? drw->scheme->bg->rgb : drw->scheme->fg->rgb),
+	//	drw->font->layout, x * PANGO_SCALE, y * PANGO_SCALE);
+	//if(text == stext && statusmarkup) /* clear markup attributes */
+	//	pango_layout_set_attributes(drw->font->layout, NULL);
+#else
+	XSetForeground(drw->dpy, drw->gc, invert ? drw->scheme->bg->rgb : drw->scheme->fg->rgb);
+	if(drw->font->set)
+		XmbDrawString(drw->dpy, drw->drawable, drw->font->set, drw->gc, tx, ty, buf, len);
+	else
+		XDrawString(drw->dpy, drw->drawable, drw->gc, tx, ty, buf, len);
+#endif
+}
+
+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(Fnt *font, const char *text, unsigned int len, Extnts *tex) {
+	if(!font || !text)
+		return;
+
+#ifdef CONFIG_DWM_PANGO
+	PangoRectangle r;
+	//if(text == stext && statusmarkup)
+	//	pango_layout_set_markup(font->layout, text, len);
+	//else
+		pango_layout_set_text(font->layout, text, len);
+	pango_layout_get_extents(font->layout, 0, &r);
+	//if(text == stext && statusmarkup) /* clear markup attributes */
+	//	pango_layout_set_attributes(font->layout, NULL);
+	tex->h = r.height;
+	tex->w = r.width / PANGO_SCALE;
+#else
+	XRectangle r;
+	if(font->set) {
+		XmbTextExtents(font->set, text, len, NULL, &r);
+		tex->w = r.width;
+		tex->h = r.height;
+	}
+	else {
+		tex->h = font->ascent + font->descent;
+		tex->w = XTextWidth(font->xfont, text, len);
+	}
+#endif
+}
+
+unsigned int
+drw_font_getexts_width(Fnt *font, const char *text, unsigned int len) {
+	Extnts tex;
+
+	if(!font)
+		return -1;
+	drw_font_getexts(font, 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);
+}