1/* See LICENSE file for copyright and license details. */
  2#include <stdio.h>
  3#include <stdlib.h>
  4#include <X11/Xlib.h>
  5
  6#include "draw.h"
  7#include "util.h"
  8
  9Draw *
 10draw_create(Display *dpy, int screen, Window win, unsigned int w, unsigned int h) {
 11	Draw *draw = (Draw *)calloc(1, sizeof(Draw));
 12	draw->dpy = dpy;
 13	draw->screen = screen;
 14	draw->win = win;
 15	draw->w = w;
 16	draw->h = h;
 17	draw->drawable = XCreatePixmap(dpy, win, w, h, DefaultDepth(dpy, screen));
 18	draw->gc = XCreateGC(dpy, win, 0, NULL);
 19	XSetLineAttributes(dpy, draw->gc, 1, LineSolid, CapButt, JoinMiter);
 20	return draw;
 21}
 22
 23void
 24draw_resize(Draw *draw, unsigned int w, unsigned int h) {
 25	if(!draw)
 26		return;
 27	draw->w = w;
 28	draw->h = h;
 29	XFreePixmap(draw->dpy, draw->drawable);
 30	draw->drawable = XCreatePixmap(draw->dpy, draw->win, w, h, DefaultDepth(draw->dpy, draw->screen));
 31}
 32
 33void
 34draw_free(Draw *draw) {
 35	XFreePixmap(draw->dpy, draw->drawable);
 36	XFreeGC(draw->dpy, draw->gc);
 37	free(draw);
 38}
 39
 40Fnt *
 41draw_font_create(Draw *draw, const char *fontname) {
 42	Fnt *font;
 43	char *def, **missing;
 44	int n;
 45
 46	if(!draw)
 47		return NULL;
 48	font = (Fnt *)calloc(1, sizeof(Fnt));
 49	font->set = XCreateFontSet(draw->dpy, fontname, &missing, &n, &def);
 50	if(missing) {
 51		while(n--)
 52			fprintf(stderr, "draw: missing fontset: %s\n", missing[n]);
 53		XFreeStringList(missing);
 54	}
 55	if(font->set) {
 56		XFontStruct **xfonts;
 57		char **font_names;
 58
 59		XExtentsOfFontSet(font->set);
 60		n = XFontsOfFontSet(font->set, &xfonts, &font_names);
 61		while(n--) {
 62			font->ascent = MAX(font->ascent, (*xfonts)->ascent);
 63			font->descent = MAX(font->descent,(*xfonts)->descent);
 64			xfonts++;
 65		}
 66	}
 67	else {
 68		if(!(font->xfont = XLoadQueryFont(draw->dpy, fontname))
 69		&& !(font->xfont = XLoadQueryFont(draw->dpy, "fixed")))
 70			die("error, cannot load font: '%s'\n", fontname);
 71		font->ascent = font->xfont->ascent;
 72		font->descent = font->xfont->descent;
 73	}
 74	font->h = font->ascent + font->descent;
 75	return font;
 76}
 77
 78void
 79draw_font_free(Draw *draw, Fnt *font) {
 80	if(!draw || !font)
 81		return;
 82	if(font->set)
 83		XFreeFontSet(draw->dpy, font->set);
 84	else
 85		XFreeFont(draw->dpy, font->xfont);
 86	free(font);
 87}
 88
 89Col *
 90draw_col_create(Draw *draw, const char *colname) {
 91	Col *col = (Col *)calloc(1, sizeof(Col));
 92	Colormap cmap = DefaultColormap(draw->dpy, draw->screen);
 93	XColor color;
 94
 95	if(!XAllocNamedColor(draw->dpy, cmap, colname, &color, &color))
 96		die("error, cannot allocate color '%s'\n", colname);
 97	col->rgb = color.pixel;
 98	return col;
 99}
100
101void
102draw_col_free(Draw *draw, Col *col) {
103	if(!col)
104		return;
105	free(col);
106}
107
108void
109draw_setfont(Draw *draw, Fnt *font) {
110	if(!draw || !font)
111		return;
112	draw->font = font;
113}
114
115void
116draw_setfg(Draw *draw, Col *col) {
117	if(!draw || !col) 
118		return;
119	draw->fg = col;
120}
121
122void
123draw_setbg(Draw *draw, Col *col) {
124	if(!draw || !col)
125		return;
126	draw->bg = col;
127}
128
129void
130draw_rect(Draw *draw, int x, int y, unsigned int w, unsigned int h) {
131	if(!draw)
132		return;
133	/* TODO: draw the rectangle */
134}
135
136void
137draw_text(Draw *draw, int x, int y, const char *text) {
138	if(!draw)
139		return;
140	/* TODO: draw the text */
141}
142
143void
144draw_map(Draw *draw, int x, int y, unsigned int w, unsigned int h) {
145	if(!draw)
146		return;
147	/* TODO: map the draw contents in the region */
148}
149
150void
151draw_getextents(Draw *draw, const char *text, TextExtents *extents) {
152	if(!draw || !extents)
153		return;
154	/* TODO: get extents */
155}