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view draw.c @ 33:e90449e03167

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new stuff (some warning elimination)
author Anselm R. Garbe <garbeam@wmii.de>
date Thu, 13 Jul 2006 01:55:54 +0200
parents 082c75b937b5
children cd30cce52b78
line source
1 /*
2 * (C)opyright MMIV-MMVI Anselm R. Garbe <garbeam at gmail dot com>
3 * See LICENSE file for license details.
4 */
5
6 #include <stdio.h>
7 #include <string.h>
8
9 #include <X11/Xlocale.h>
10
11 #include "wm.h"
12
13 static void
14 drawborder(Brush *b)
15 {
16 XPoint points[5];
17 XSetLineAttributes(dpy, b->gc, 1, LineSolid, CapButt, JoinMiter);
18 XSetForeground(dpy, b->gc, b->border);
19 points[0].x = b->x;
20 points[0].y = b->y;
21 points[1].x = b->w - 1;
22 points[1].y = 0;
23 points[2].x = 0;
24 points[2].y = b->h - 1;
25 points[3].x = -(b->w - 1);
26 points[3].y = 0;
27 points[4].x = 0;
28 points[4].y = -(b->h - 1);
29 XDrawLines(dpy, b->drawable, b->gc, points, 5, CoordModePrevious);
30 }
31
32 void
33 draw(Brush *b, Bool border, const char *text)
34 {
35 int x, y, w, h;
36 unsigned int len;
37 static char buf[256];
38 XGCValues gcv;
39 XRectangle r = { b->x, b->y, b->w, b->h };
40
41 XSetForeground(dpy, b->gc, b->bg);
42 XFillRectangles(dpy, b->drawable, b->gc, &r, 1);
43
44 w = 0;
45 if(border)
46 drawborder(b);
47
48 if(!text)
49 return;
50
51 len = strlen(text);
52 if(len >= sizeof(buf))
53 len = sizeof(buf) - 1;
54 memcpy(buf, text, len);
55 buf[len] = 0;
56
57 h = b->font.ascent + b->font.descent;
58 y = b->y + (b->h / 2) - (h / 2) + b->font.ascent;
59 x = b->x + (h / 2);
60
61 /* shorten text if necessary */
62 while(len && (w = textnw(&b->font, buf, len)) > b->w - h)
63 buf[--len] = 0;
64
65 if(w > b->w)
66 return; /* too long */
67
68 gcv.foreground = b->fg;
69 gcv.background = b->bg;
70 if(b->font.set) {
71 XChangeGC(dpy, b->gc, GCForeground | GCBackground, &gcv);
72 XmbDrawImageString(dpy, b->drawable, b->font.set, b->gc,
73 x, y, buf, len);
74 }
75 else {
76 gcv.font = b->font.xfont->fid;
77 XChangeGC(dpy, b->gc, GCForeground | GCBackground | GCFont, &gcv);
78 XDrawImageString(dpy, b->drawable, b->gc, x, y, buf, len);
79 }
80 }
81
82 static unsigned long
83 xloadcolors(Colormap cmap, const char *colstr)
84 {
85 XColor color;
86 XAllocNamedColor(dpy, cmap, colstr, &color, &color);
87 return color.pixel;
88 }
89
90 void
91 loadcolors(int scr, Brush *b,
92 const char *bg, const char *fg, const char *border)
93 {
94 Colormap cmap = DefaultColormap(dpy, scr);
95 b->bg = xloadcolors(cmap, bg);
96 b->fg = xloadcolors(cmap, fg);
97 b->border = xloadcolors(cmap, border);
98 }
99
100 unsigned int
101 textnw(Fnt *font, char *text, unsigned int len)
102 {
103 XRectangle r;
104 if(font->set) {
105 XmbTextExtents(font->set, text, len, NULL, &r);
106 return r.width;
107 }
108 return XTextWidth(font->xfont, text, len);
109 }
110
111 unsigned int
112 textw(Fnt *font, char *text)
113 {
114 return textnw(font, text, strlen(text));
115 }
116
117 unsigned int
118 texth(Fnt *font)
119 {
120 return font->height + 4;
121 }
122
123 void
124 loadfont(Fnt *font, const char *fontstr)
125 {
126 char **missing, *def;
127 int i, n;
128
129 missing = NULL;
130 setlocale(LC_ALL, "");
131 if(font->set)
132 XFreeFontSet(dpy, font->set);
133 font->set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
134 if(missing) {
135 while(n--)
136 fprintf(stderr, "missing fontset: %s\n", missing[n]);
137 XFreeStringList(missing);
138 if(font->set) {
139 XFreeFontSet(dpy, font->set);
140 font->set = NULL;
141 }
142 }
143 if(font->set) {
144 XFontSetExtents *font_extents;
145 XFontStruct **xfonts;
146 char **font_names;
147
148 font->ascent = font->descent = 0;
149 font_extents = XExtentsOfFontSet(font->set);
150 n = XFontsOfFontSet(font->set, &xfonts, &font_names);
151 for(i = 0, font->ascent = 0, font->descent = 0; i < n; i++) {
152 if(font->ascent < (*xfonts)->ascent)
153 font->ascent = (*xfonts)->ascent;
154 if(font->descent < (*xfonts)->descent)
155 font->descent = (*xfonts)->descent;
156 xfonts++;
157 }
158 }
159 else {
160 if(font->xfont)
161 XFreeFont(dpy, font->xfont);
162 font->xfont = NULL;
163 font->xfont = XLoadQueryFont(dpy, fontstr);
164 if (!font->xfont)
165 font->xfont = XLoadQueryFont(dpy, "fixed");
166 if (!font->xfont)
167 error("error, cannot load 'fixed' font\n");
168 font->ascent = font->xfont->ascent;
169 font->descent = font->xfont->descent;
170 }
171 font->height = font->ascent + font->descent;
172 }