1 #include <u.h>
2 #include <libc.h>
3 #include <draw.h>
4 #include <cursor.h>
5 #include <event.h>
6 #include <bio.h>
7 #include "proof.h"
8 
9 static	int	checkmouse(void);
10 /* static	int	buttondown(void); */
11 static	char	*getmousestr(void);
12 static	char	*getkbdstr(int);
13 
14 extern	Cursor	blot;
15 extern	char	*track;
16 
17 Mouse	mouse;
18 
19 void
20 mapscreen(void)
21 {
22 	if(initdraw(0, 0, "proof") < 0){
23 		fprint(2, "proof: initdraw failed: %r\n");
24 		exits("initdraw");
25 	}
26 	einit(Ekeyboard|Emouse);
27 }
28 
29 void
30 clearscreen(void)
31 {
32 	draw(screen, screen->r, display->black, nil, ZP);
33 }
34 
35 void
36 screenprint(char *fmt, ...)
37 {
38 	char buf[100];
39 	Point p;
40 	va_list args;
41 
42 	va_start(args, fmt);
43 	vseprint(buf, &buf[sizeof buf], fmt, args);
44 	va_end(args);
45 	p = Pt(screen->clipr.min.x+40, screen->clipr.max.y-40);
46 	string(screen, p, display->black, ZP, font, buf);
47 }
48 
49 #define	Viewkey	0xb2
50 #define etimer(x, y) 0
51 
52 char *
53 getcmdstr(void)
54 {
55 	Event ev;
56 	int e;
57 	static ulong timekey = 0;
58 	ulong tracktm = 0;
59 	Dir *dir;
60 
61 	if(track){
62 		if(timekey == 0)
63 			timekey = etimer(0, 5000);
64 		dir = dirstat(track);
65 		if(dir != nil){
66 			tracktm = dir->mtime;
67 			free(dir);
68 		}
69 	}
70 	for (;;) {
71 		e = event(&ev);
72 		if(resized){
73 			resized = 0;
74 			return "p";
75 		}
76 		if ((e & Emouse) && ev.mouse.buttons) {
77 			mouse = ev.mouse;
78 			return getmousestr();
79 		} else if (e & Ekeyboard)
80 			return getkbdstr(ev.kbdc);	/* sadly, no way to unget */
81 		else if (e & timekey) {
82 			if((dir = dirstat(track)) != nil){
83 				if(tracktm < dir->mtime){
84 					free(dir);
85 					return "q";
86 				}
87 				free(dir);
88 			}
89 		}
90 	}
91 }
92 
93 static char *
94 getkbdstr(int c0)
95 {
96 	static char buf[100];
97 	char *p;
98 	int c;
99 
100 	if (c0 == '\n')
101 		return "";
102 	buf[0] = c0;
103 	buf[1] = 0;
104 	screenprint("%s", buf);
105 	for (p = buf+1; (c = ekbd()) != '\n' && c != '\r' && c != -1 && c != Viewkey; ) {
106 		if (c == '\b' && p > buf) {
107 			*--p = ' ';
108 		} else {
109 			*p++ = c;
110 			*p = 0;
111 		}
112 		screenprint("%s", buf);
113 	}
114 	*p = 0;
115 	return buf;
116 }
117 
118 
119 #define button3(b)	((b) & 4)
120 #define button2(b)	((b) & 2)
121 #define button1(b)	((b) & 1)
122 #define button23(b)	((b) & 6)
123 #define button123(b)	((b) & 7)
124 
125 #define	butcvt(b)	(1 << ((b) - 1))
126 
127 #if 0
128 static int buttondown(void)	/* report state of buttons, if any */
129 {
130 	if (!ecanmouse())	/* no event pending */
131 		return 0;
132 	mouse = emouse();	/* something, but it could be motion */
133 	return mouse.buttons & 7;
134 }
135 #endif
136 
137 int waitdown(void)	/* wait until some button is down */
138 {
139 	while (!(mouse.buttons & 7))
140 		mouse = emouse();
141 	return mouse.buttons & 7;
142 }
143 
144 int waitup(void)
145 {
146 	while (mouse.buttons & 7)
147 		mouse = emouse();
148 	return mouse.buttons & 7;
149 }
150 
151 char *m3[]	= { "next", "prev", "page n", "again", "bigger", "smaller", "pan", "quit?", 0 };
152 char *m2[]	= { 0 };
153 
154 enum { Next = 0, Prev, Page, Again, Bigger, Smaller, Pan, Quit };
155 
156 Menu	mbut3	= { m3, 0, 0 };
157 Menu	mbut2	= { m2, 0, 0 };
158 
159 int	last_hit;
160 int	last_but;
161 
162 char *pan(void)
163 {
164 	Point dd, xy, lastxy, min, max;
165 
166 	esetcursor(&blot);
167 	waitdown();
168 	xy = mouse.xy;
169 	do{
170 		lastxy = mouse.xy;
171 		mouse = emouse();
172 		dd = subpt(mouse.xy, lastxy);
173 		min = addpt(screen->clipr.min, dd);
174 		max = addpt(screen->clipr.max, dd);
175 		draw(screen, rectaddpt(screen->r, subpt(mouse.xy, lastxy)),
176 			screen, nil, screen->r.min);
177 		if(mouse.xy.x < lastxy.x)	/* moved left, clear right */
178 			draw(screen, Rect(max.x, screen->r.min.y, screen->r.max.x, screen->r.max.y),
179 				display->white, nil, ZP);
180 		else	/* moved right, clear left*/
181 			draw(screen, Rect(screen->r.min.x, screen->r.min.y, min.x, screen->r.max.y),
182 				display->white, nil, ZP);
183 		if(mouse.xy.y < lastxy.y)	/* moved up, clear down */
184 			draw(screen, Rect(screen->r.min.x, max.y, screen->r.max.x, screen->r.max.y),
185 				display->white, nil, ZP);
186 		else		/* moved down, clear up */
187 			draw(screen, Rect(screen->r.min.x, screen->r.min.y, screen->r.max.x, min.y),
188 				display->white, nil, ZP);
189 		flushimage(display, 1);
190 	}while(mouse.buttons);
191 
192 	xyoffset = addpt(xyoffset, subpt(mouse.xy, xy));
193 
194 	esetcursor(0);
195 	return "p";
196 }
197 
198 static char *getmousestr(void)
199 {
200 	static char buf[20];
201 
202 	checkmouse();
203 	if (last_but == 1)
204 		return "p";	/* repaint after panning */
205 	if (last_but == 2) {
206 		return "c";
207 	} else if (last_but == 3) {
208 		switch (last_hit) {
209 		case Next:
210 			return "";
211 		case Prev:
212 			return "-1";
213 		case Page:
214 			screenprint("page? ");
215 			return "c";
216 		case Again:
217 			return "p";
218 		case Bigger:
219 			sprint(buf, "m%g", mag * 1.1);
220 			return buf;
221 		case Smaller:
222 			sprint(buf, "m%g", mag / 1.1);
223 			return buf;
224 		case Pan:
225 			return pan();
226 		case Quit:
227 			return "q";
228 		default:
229 			return "c";
230 		}
231 	} else {		/* button 1 or bail out */
232 		return "c";
233 	}
234 }
235 
236 static int
237 checkmouse(void)	/* return button touched if any */
238 {
239 	int c, b;
240 	char *p;
241 	extern int confirm(int);
242 
243 	b = waitdown();
244 	last_but = 0;
245 	last_hit = -1;
246 	c = 0;
247 	if (button3(b)) {
248 		last_hit = emenuhit(3, &mouse, &mbut3);
249 		last_but = 3;
250 	} else if (button2(b)) {
251 		last_hit = emenuhit(2, &mouse, &mbut2);
252 		last_but = 2;
253 	} else {		/* button1() */
254 		pan();
255 		last_but = 1;
256 	}
257 	waitup();
258 	if (last_but == 3 && last_hit >= 0) {
259 		p = m3[last_hit];
260 		c = p[strlen(p) - 1];
261 	}
262 	if (c == '?' && !confirm(last_but))
263 		last_hit = -1;
264 	return last_but;
265 }
266 
267 Cursor deadmouse = {
268 	{ 0, 0},	/* offset */
269 	{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
270 	  0x00, 0x00, 0x00, 0x0C, 0x00, 0x82, 0x04, 0x41,
271 	  0xFF, 0xE1, 0x5F, 0xF1, 0x3F, 0xFE, 0x17, 0xF0,
272 	  0x03, 0xE0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, },
273 	{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
274 	  0x00, 0x00, 0x00, 0x0C, 0x00, 0x82, 0x04, 0x41,
275 	  0xFF, 0xE1, 0x5F, 0xF1, 0x3F, 0xFE, 0x17, 0xF0,
276 	  0x03, 0xE0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, }
277 };
278 
279 Cursor blot ={
280 	{ 0, 0 },
281 	{ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
282 	  0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
283 	  0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
284 	  0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, },
285 	{ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
286 	  0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
287 	  0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
288 	  0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, }
289 };
290 
291 Cursor skull ={
292 	{ 0, 0 },
293 	{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xC0, 0x03,
294 	  0xE7, 0xE7, 0x3F, 0xFC, 0x0F, 0xF0, 0x0D, 0xB0,
295 	  0x07, 0xE0, 0x06, 0x60, 0x37, 0xEC, 0xE4, 0x27,
296 	  0xC3, 0xC3, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, },
297 	{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xC0, 0x03,
298 	  0xE7, 0xE7, 0x3F, 0xFC, 0x0F, 0xF0, 0x0D, 0xB0,
299 	  0x07, 0xE0, 0x06, 0x60, 0x37, 0xEC, 0xE4, 0x27,
300 	  0xC3, 0xC3, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, }
301 };
302 
303 int
304 confirm(int but)	/* ask for confirmation if menu item ends with '?' */
305 {
306 	int c;
307 	static int but_cvt[8] = { 0, 1, 2, 0, 3, 0, 0, 0 };
308 
309 	esetcursor(&skull);
310 	c = waitdown();
311 	waitup();
312 	esetcursor(0);
313 	return but == but_cvt[c];
314 }