draw.c
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/* See LICENSE file for copyright and license details. */ #include <stdio.h> #include <stdlib.h> #include <X11/Xlib.h> #include "draw.h" #include "util.h" Draw * draw_create(Display *dpy, int screen, Window win, unsigned int w, unsigned int h) { Draw *draw = (Draw *)calloc(1, sizeof(Draw)); draw->dpy = dpy; draw->screen = screen; draw->win = win; draw->w = w; draw->h = h; draw->drawable = XCreatePixmap(dpy, win, w, h, DefaultDepth(dpy, screen)); draw->gc = XCreateGC(dpy, win, 0, NULL); XSetLineAttributes(dpy, draw->gc, 1, LineSolid, CapButt, JoinMiter); return draw; } void draw_resize(Draw *draw, unsigned int w, unsigned int h) { if(!draw) return; draw->w = w; draw->h = h; XFreePixmap(draw->dpy, draw->drawable); draw->drawable = XCreatePixmap(draw->dpy, draw->win, w, h, DefaultDepth(draw->dpy, draw->screen)); } void draw_free(Draw *draw) { XFreePixmap(draw->dpy, draw->drawable); XFreeGC(draw->dpy, draw->gc); free(draw); } Fnt * draw_font_create(Draw *draw, const char *fontname) { Fnt *font; char *def, **missing; int n; if(!draw) return NULL; font = (Fnt *)calloc(1, sizeof(Fnt)); font->set = XCreateFontSet(draw->dpy, fontname, &missing, &n, &def); if(missing) { while(n--) fprintf(stderr, "draw: 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(draw->dpy, fontname)) && !(font->xfont = XLoadQueryFont(draw->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; return font; } void draw_font_free(Draw *draw, Fnt *font) { if(!draw || !font) return; if(font->set) XFreeFontSet(draw->dpy, font->set); else XFreeFont(draw->dpy, font->xfont); free(font); } Col * draw_col_create(Draw *draw, const char *colname) { Col *col = (Col *)calloc(1, sizeof(Col)); Colormap cmap = DefaultColormap(draw->dpy, draw->screen); XColor color; if(!XAllocNamedColor(draw->dpy, cmap, colname, &color, &color)) die("error, cannot allocate color '%s'\n", colname); col->rgb = color.pixel; return col; } void draw_col_free(Draw *draw, Col *col) { if(!col) return; free(col); } void draw_setfont(Draw *draw, Fnt *font) { if(!draw || !font) return; draw->font = font; } void draw_setfg(Draw *draw, Col *col) { if(!draw || !col) return; draw->fg = col; } void draw_setbg(Draw *draw, Col *col) { if(!draw || !col) return; draw->bg = col; } void draw_rect(Draw *draw, int x, int y, unsigned int w, unsigned int h) { if(!draw) return; /* TODO: draw the rectangle */ } void draw_text(Draw *draw, int x, int y, const char *text) { if(!draw) return; /* TODO: draw the text */ } void draw_map(Draw *draw, int x, int y, unsigned int w, unsigned int h) { if(!draw) return; /* TODO: map the draw contents in the region */ } void draw_getextents(Draw *draw, const char *text, TextExtents *extents) { if(!draw || !extents) return; /* TODO: get extents */ }