1 76193d7c 2003-09-30 devnull #include <u.h>
  2 76193d7c 2003-09-30 devnull #include <libc.h>
  3 76193d7c 2003-09-30 devnull #include <draw.h>
  4 54bebe6a 2012-09-17 rsc #include <mouse.h>
  5 76193d7c 2003-09-30 devnull 
  6 76193d7c 2003-09-30 devnull Display	*display;
  7 76193d7c 2003-09-30 devnull Font	*font;
  8 76193d7c 2003-09-30 devnull Image	*screen;
  9 76193d7c 2003-09-30 devnull int	_drawdebug;
 10 76193d7c 2003-09-30 devnull 
 11 76193d7c 2003-09-30 devnull static char deffontname[] = "*default*";
 12 76193d7c 2003-09-30 devnull Screen	*_screen;
 13 76193d7c 2003-09-30 devnull 
 14 b20f06ab 2004-12-26 devnull int		debuglockdisplay = 1;
 15 74dc60da 2006-06-25 devnull char	*winsize;
 16 76193d7c 2003-09-30 devnull 
 17 54bebe6a 2012-09-17 rsc int		visibleclicks = 0;
 18 54bebe6a 2012-09-17 rsc Image	*mousebuttons;
 19 54bebe6a 2012-09-17 rsc Image	*mousesave;
 20 54bebe6a 2012-09-17 rsc Mouse	_drawmouse;
 21 54bebe6a 2012-09-17 rsc 
 22 abe4cd41 2005-07-27 devnull /*
 23 76193d7c 2003-09-30 devnull static void
 24 76193d7c 2003-09-30 devnull drawshutdown(void)
 25 76193d7c 2003-09-30 devnull {
 26 76193d7c 2003-09-30 devnull 	Display *d;
 27 76193d7c 2003-09-30 devnull 
 28 76193d7c 2003-09-30 devnull 	d = display;
 29 76193d7c 2003-09-30 devnull 	if(d){
 30 76193d7c 2003-09-30 devnull 		display = nil;
 31 76193d7c 2003-09-30 devnull 		closedisplay(d);
 32 76193d7c 2003-09-30 devnull 	}
 33 76193d7c 2003-09-30 devnull }
 34 abe4cd41 2005-07-27 devnull */
 35 76193d7c 2003-09-30 devnull 
 36 76193d7c 2003-09-30 devnull int
 37 74dc60da 2006-06-25 devnull geninitdraw(char *devdir, void(*error)(Display*, char*), char *fontname, char *label, char *windir, int ref)
 38 76193d7c 2003-09-30 devnull {
 39 76193d7c 2003-09-30 devnull 	Subfont *df;
 40 54bebe6a 2012-09-17 rsc 	char buf[128], *p;
 41 76193d7c 2003-09-30 devnull 
 42 74dc60da 2006-06-25 devnull 	if(label == nil)
 43 74dc60da 2006-06-25 devnull 		label = argv0;
 44 74dc60da 2006-06-25 devnull 	display = _initdisplay(error, label);
 45 76193d7c 2003-09-30 devnull 	if(display == nil)
 46 76193d7c 2003-09-30 devnull 		return -1;
 47 76193d7c 2003-09-30 devnull 
 48 76193d7c 2003-09-30 devnull 	/*
 49 76193d7c 2003-09-30 devnull 	 * Set up default font
 50 76193d7c 2003-09-30 devnull 	 */
 51 76193d7c 2003-09-30 devnull 	df = getdefont(display);
 52 76193d7c 2003-09-30 devnull 	display->defaultsubfont = df;
 53 76193d7c 2003-09-30 devnull 	if(df == nil){
 54 76193d7c 2003-09-30 devnull 		fprint(2, "imageinit: can't open default subfont: %r\n");
 55 76193d7c 2003-09-30 devnull     Error:
 56 76193d7c 2003-09-30 devnull 		closedisplay(display);
 57 76193d7c 2003-09-30 devnull 		display = nil;
 58 76193d7c 2003-09-30 devnull 		return -1;
 59 76193d7c 2003-09-30 devnull 	}
 60 76193d7c 2003-09-30 devnull 	if(fontname == nil)
 61 74dc60da 2006-06-25 devnull 		fontname = getenv("font");
 62 76193d7c 2003-09-30 devnull 
 63 76193d7c 2003-09-30 devnull 	/*
 64 76193d7c 2003-09-30 devnull 	 * Build fonts with caches==depth of screen, for speed.
 65 76193d7c 2003-09-30 devnull 	 * If conversion were faster, we'd use 0 and save memory.
 66 76193d7c 2003-09-30 devnull 	 */
 67 76193d7c 2003-09-30 devnull 	if(fontname == nil){
 68 76193d7c 2003-09-30 devnull 		snprint(buf, sizeof buf, "%d %d\n0 %d\t%s\n", df->height, df->ascent,
 69 76193d7c 2003-09-30 devnull 			df->n-1, deffontname);
 70 74dc60da 2006-06-25 devnull //BUG: Need something better for this	installsubfont("*default*", df);
 71 76193d7c 2003-09-30 devnull 		font = buildfont(display, buf, deffontname);
 72 76193d7c 2003-09-30 devnull 		if(font == nil){
 73 74dc60da 2006-06-25 devnull 			fprint(2, "imageinit: can't open default font: %r\n");
 74 76193d7c 2003-09-30 devnull 			goto Error;
 75 76193d7c 2003-09-30 devnull 		}
 76 76193d7c 2003-09-30 devnull 	}else{
 77 76193d7c 2003-09-30 devnull 		font = openfont(display, fontname);	/* BUG: grey fonts */
 78 76193d7c 2003-09-30 devnull 		if(font == nil){
 79 74dc60da 2006-06-25 devnull 			fprint(2, "imageinit: can't open font %s: %r\n", fontname);
 80 76193d7c 2003-09-30 devnull 			goto Error;
 81 76193d7c 2003-09-30 devnull 		}
 82 76193d7c 2003-09-30 devnull 	}
 83 76193d7c 2003-09-30 devnull 	display->defaultfont = font;
 84 76193d7c 2003-09-30 devnull 
 85 670dd11a 2005-03-18 devnull 	_screen = allocscreen(display->image, display->white, 0);
 86 74dc60da 2006-06-25 devnull 	display->screenimage = display->image;	/* _allocwindow wants screenimage->chan */
 87 670dd11a 2005-03-18 devnull 	screen = _allocwindow(nil, _screen, display->image->r, Refnone, DWhite);
 88 74dc60da 2006-06-25 devnull 	if(screen == nil){
 89 74dc60da 2006-06-25 devnull 		fprint(2, "_allocwindow: %r\n");
 90 74dc60da 2006-06-25 devnull 		goto Error;
 91 74dc60da 2006-06-25 devnull 	}
 92 670dd11a 2005-03-18 devnull 	display->screenimage = screen;
 93 7ba8aa0c 2005-07-24 devnull 	draw(screen, screen->r, display->white, nil, ZP);
 94 670dd11a 2005-03-18 devnull 	flushimage(display, 1);
 95 670dd11a 2005-03-18 devnull 
 96 54bebe6a 2012-09-17 rsc 	p = getenv("visibleclicks");
 97 54bebe6a 2012-09-17 rsc 	visibleclicks = p != nil && *p == '1';
 98 54bebe6a 2012-09-17 rsc 	if(visibleclicks) {
 99 54bebe6a 2012-09-17 rsc 		Font *f;
100 54bebe6a 2012-09-17 rsc 		
101 54bebe6a 2012-09-17 rsc 		f = display->defaultfont;
102 54bebe6a 2012-09-17 rsc 		mousebuttons = allocimage(display, Rect(0,0,64,22), screen->chan, 0, DWhite);
103 54bebe6a 2012-09-17 rsc 		border(mousebuttons, mousebuttons->r, 1, display->black, ZP);
104 54bebe6a 2012-09-17 rsc 		border(mousebuttons, Rect(0, 0, 22, 22), 1, display->black, ZP);
105 54bebe6a 2012-09-17 rsc 		border(mousebuttons, Rect(42, 0, 64, 22), 1, display->black, ZP);
106 54bebe6a 2012-09-17 rsc 		string(mousebuttons, Pt(10-stringwidth(display->defaultfont, "1")/2, 11-f->height/2), display->black, ZP, display->defaultfont, "1");
107 54bebe6a 2012-09-17 rsc 		string(mousebuttons, Pt(21+10-stringwidth(display->defaultfont, "2")/2, 11-f->height/2), display->black, ZP, display->defaultfont, "2");
108 54bebe6a 2012-09-17 rsc 		string(mousebuttons, Pt(42+10-stringwidth(display->defaultfont, "3")/2, 11-f->height/2), display->black, ZP, display->defaultfont, "3");
109 54bebe6a 2012-09-17 rsc 		mousesave = allocimage(display, Rect(0,0,64,22), screen->chan, 0, 0);
110 54bebe6a 2012-09-17 rsc 	}
111 54bebe6a 2012-09-17 rsc 
112 abe4cd41 2005-07-27 devnull 	/*
113 abe4cd41 2005-07-27 devnull 	 * I don't see any reason to go away gracefully,
114 abe4cd41 2005-07-27 devnull 	 * and if some other proc exits holding the display
115 abe4cd41 2005-07-27 devnull 	 * lock, this atexit call never finishes.
116 abe4cd41 2005-07-27 devnull 	 *
117 abe4cd41 2005-07-27 devnull 	 * atexit(drawshutdown);
118 abe4cd41 2005-07-27 devnull 	 */
119 76193d7c 2003-09-30 devnull 	return 1;
120 74dc60da 2006-06-25 devnull }
121 74dc60da 2006-06-25 devnull 
122 74dc60da 2006-06-25 devnull int
123 74dc60da 2006-06-25 devnull initdraw(void (*error)(Display*, char*), char *fontname, char *label)
124 74dc60da 2006-06-25 devnull {
125 74dc60da 2006-06-25 devnull 	return geninitdraw("/dev", error, fontname, label, "/dev", Refnone);
126 74dc60da 2006-06-25 devnull }
127 74dc60da 2006-06-25 devnull 
128 74dc60da 2006-06-25 devnull extern int _freeimage1(Image*);
129 74dc60da 2006-06-25 devnull 
130 74dc60da 2006-06-25 devnull static Image*
131 74dc60da 2006-06-25 devnull getimage0(Display *d, Image *image)
132 74dc60da 2006-06-25 devnull {
133 74dc60da 2006-06-25 devnull 	char info[12*12+1];
134 74dc60da 2006-06-25 devnull 	uchar *a;
135 74dc60da 2006-06-25 devnull 	int n;
136 74dc60da 2006-06-25 devnull 
137 74dc60da 2006-06-25 devnull 	/*
138 74dc60da 2006-06-25 devnull 	 * If there's an old screen, it has id 0.  The 'J' request below
139 74dc60da 2006-06-25 devnull 	 * will try to install the new screen as id 0, so the old one 
140 74dc60da 2006-06-25 devnull 	 * must be freed first.
141 74dc60da 2006-06-25 devnull 	 */
142 74dc60da 2006-06-25 devnull 	if(image){
143 74dc60da 2006-06-25 devnull 		_freeimage1(image);
144 74dc60da 2006-06-25 devnull 		memset(image, 0, sizeof(Image));
145 74dc60da 2006-06-25 devnull 	}
146 74dc60da 2006-06-25 devnull 
147 74dc60da 2006-06-25 devnull 	a = bufimage(d, 2);
148 74dc60da 2006-06-25 devnull 	a[0] = 'J';
149 74dc60da 2006-06-25 devnull 	a[1] = 'I';
150 74dc60da 2006-06-25 devnull 	if(flushimage(d, 0) < 0){
151 74dc60da 2006-06-25 devnull 		fprint(2, "cannot read screen info: %r\n");
152 74dc60da 2006-06-25 devnull 		return nil;
153 74dc60da 2006-06-25 devnull 	}
154 74dc60da 2006-06-25 devnull 
155 74dc60da 2006-06-25 devnull 	n = _displayrddraw(d, info, sizeof info);
156 74dc60da 2006-06-25 devnull 	if(n != 12*12){
157 74dc60da 2006-06-25 devnull 		fprint(2, "short screen info\n");
158 74dc60da 2006-06-25 devnull 		return nil;
159 74dc60da 2006-06-25 devnull 	}
160 74dc60da 2006-06-25 devnull 
161 74dc60da 2006-06-25 devnull 	if(image == nil){
162 74dc60da 2006-06-25 devnull 		image = mallocz(sizeof(Image), 1);
163 74dc60da 2006-06-25 devnull 		if(image == nil){
164 74dc60da 2006-06-25 devnull 			fprint(2, "cannot allocate image: %r\n");
165 74dc60da 2006-06-25 devnull 			return nil;
166 74dc60da 2006-06-25 devnull 		}
167 74dc60da 2006-06-25 devnull 	}
168 74dc60da 2006-06-25 devnull 
169 74dc60da 2006-06-25 devnull 	image->display = d;
170 74dc60da 2006-06-25 devnull 	image->id = 0;
171 74dc60da 2006-06-25 devnull 	image->chan = strtochan(info+2*12);
172 74dc60da 2006-06-25 devnull 	image->depth = chantodepth(image->chan);
173 74dc60da 2006-06-25 devnull 	image->repl = atoi(info+3*12);
174 74dc60da 2006-06-25 devnull 	image->r.min.x = atoi(info+4*12);
175 74dc60da 2006-06-25 devnull 	image->r.min.y = atoi(info+5*12);
176 74dc60da 2006-06-25 devnull 	image->r.max.x = atoi(info+6*12);
177 74dc60da 2006-06-25 devnull 	image->r.max.y = atoi(info+7*12);
178 74dc60da 2006-06-25 devnull 	image->clipr.min.x = atoi(info+8*12);
179 74dc60da 2006-06-25 devnull 	image->clipr.min.y = atoi(info+9*12);
180 74dc60da 2006-06-25 devnull 	image->clipr.max.x = atoi(info+10*12);
181 74dc60da 2006-06-25 devnull 	image->clipr.max.y = atoi(info+11*12);
182 d0e07019 2012-11-26 rsc 	
183 d0e07019 2012-11-26 rsc 	a = bufimage(d, 3);
184 d0e07019 2012-11-26 rsc 	a[0] = 'q';
185 d0e07019 2012-11-26 rsc 	a[1] = 1;
186 d0e07019 2012-11-26 rsc 	a[2] = 'd';
187 d0e07019 2012-11-26 rsc 	d->dpi = 100;
188 d0e07019 2012-11-26 rsc 	if(flushimage(d, 0) >= 0 && _displayrddraw(d, info, 12) == 12)
189 d0e07019 2012-11-26 rsc 		d->dpi = atoi(info);
190 d0e07019 2012-11-26 rsc 
191 74dc60da 2006-06-25 devnull 	return image;
192 74dc60da 2006-06-25 devnull }
193 74dc60da 2006-06-25 devnull 
194 74dc60da 2006-06-25 devnull /*
195 74dc60da 2006-06-25 devnull  * Attach, or possibly reattach, to window.
196 74dc60da 2006-06-25 devnull  * If reattaching, maintain value of screen pointer.
197 74dc60da 2006-06-25 devnull  */
198 74dc60da 2006-06-25 devnull int
199 74dc60da 2006-06-25 devnull getwindow(Display *d, int ref)
200 74dc60da 2006-06-25 devnull {
201 74dc60da 2006-06-25 devnull 	Image *i, *oi;
202 74dc60da 2006-06-25 devnull 	
203 74dc60da 2006-06-25 devnull 	/* XXX check for destroyed? */
204 74dc60da 2006-06-25 devnull 	
205 74dc60da 2006-06-25 devnull 	/*
206 74dc60da 2006-06-25 devnull 	 * Libdraw promises not to change the value of "screen",
207 74dc60da 2006-06-25 devnull 	 * so we have to reuse the image structure
208 74dc60da 2006-06-25 devnull 	 * memory we already have.
209 74dc60da 2006-06-25 devnull 	 */
210 74dc60da 2006-06-25 devnull 	oi = d->image;
211 74dc60da 2006-06-25 devnull 	i = getimage0(d, oi);
212 74dc60da 2006-06-25 devnull 	if(i == nil)
213 74dc60da 2006-06-25 devnull 		sysfatal("getwindow failed");
214 74dc60da 2006-06-25 devnull 	d->image = i;
215 74dc60da 2006-06-25 devnull 	/* fprint(2, "getwindow %p -> %p\n", oi, i); */
216 74dc60da 2006-06-25 devnull 
217 74dc60da 2006-06-25 devnull 	freescreen(_screen);
218 74dc60da 2006-06-25 devnull 	_screen = allocscreen(i, d->white, 0);
219 74dc60da 2006-06-25 devnull 	_freeimage1(screen);
220 74dc60da 2006-06-25 devnull 	screen = _allocwindow(screen, _screen, i->r, ref, DWhite);
221 74dc60da 2006-06-25 devnull 	d->screenimage = screen;
222 74dc60da 2006-06-25 devnull 	return 0;
223 76193d7c 2003-09-30 devnull }
224 76193d7c 2003-09-30 devnull 
225 74dc60da 2006-06-25 devnull Display*
226 74dc60da 2006-06-25 devnull _initdisplay(void (*error)(Display*, char*), char *label)
227 74dc60da 2006-06-25 devnull {
228 74dc60da 2006-06-25 devnull 	Display *disp;
229 74dc60da 2006-06-25 devnull 	Image *image;
230 74dc60da 2006-06-25 devnull 
231 74dc60da 2006-06-25 devnull 	fmtinstall('P', Pfmt);
232 74dc60da 2006-06-25 devnull 	fmtinstall('R', Rfmt);
233 74dc60da 2006-06-25 devnull 
234 74dc60da 2006-06-25 devnull 	disp = mallocz(sizeof(Display), 1);
235 74dc60da 2006-06-25 devnull 	if(disp == nil){
236 74dc60da 2006-06-25 devnull     Error1:
237 74dc60da 2006-06-25 devnull 		return nil;
238 74dc60da 2006-06-25 devnull 	}
239 74dc60da 2006-06-25 devnull 	disp->srvfd = -1;
240 74dc60da 2006-06-25 devnull 	image = nil;
241 74dc60da 2006-06-25 devnull 	if(0){
242 74dc60da 2006-06-25 devnull     Error2:
243 74dc60da 2006-06-25 devnull 		free(image);
244 74dc60da 2006-06-25 devnull 		free(disp);
245 74dc60da 2006-06-25 devnull 		goto Error1;
246 74dc60da 2006-06-25 devnull 	}
247 74dc60da 2006-06-25 devnull 	disp->bufsize = 65500;
248 74dc60da 2006-06-25 devnull 	disp->buf = malloc(disp->bufsize+5);	/* +5 for flush message */
249 74dc60da 2006-06-25 devnull 	disp->bufp = disp->buf;
250 74dc60da 2006-06-25 devnull 	disp->error = error;
251 74dc60da 2006-06-25 devnull 	qlock(&disp->qlock);
252 74dc60da 2006-06-25 devnull 
253 74dc60da 2006-06-25 devnull 	if(disp->buf == nil)
254 74dc60da 2006-06-25 devnull 		goto Error2;
255 74dc60da 2006-06-25 devnull 	if(0){
256 74dc60da 2006-06-25 devnull     Error3:
257 74dc60da 2006-06-25 devnull 		free(disp->buf);
258 74dc60da 2006-06-25 devnull 		goto Error2;
259 74dc60da 2006-06-25 devnull 	}
260 74dc60da 2006-06-25 devnull 	
261 74dc60da 2006-06-25 devnull 	if(_displaymux(disp) < 0
262 74dc60da 2006-06-25 devnull 	|| _displayconnect(disp) < 0
263 74dc60da 2006-06-25 devnull 	|| _displayinit(disp, label, winsize) < 0)
264 74dc60da 2006-06-25 devnull 		goto Error3;
265 74dc60da 2006-06-25 devnull 	if(0){
266 74dc60da 2006-06-25 devnull     Error4:
267 74dc60da 2006-06-25 devnull 		close(disp->srvfd);
268 74dc60da 2006-06-25 devnull 		goto Error3;
269 74dc60da 2006-06-25 devnull 	}
270 74dc60da 2006-06-25 devnull 
271 74dc60da 2006-06-25 devnull 	image = getimage0(disp, nil);
272 74dc60da 2006-06-25 devnull 	if(image == nil)
273 74dc60da 2006-06-25 devnull 		goto Error4;
274 74dc60da 2006-06-25 devnull 	
275 74dc60da 2006-06-25 devnull 	disp->image = image;
276 74dc60da 2006-06-25 devnull 	disp->white = allocimage(disp, Rect(0, 0, 1, 1), GREY1, 1, DWhite);
277 74dc60da 2006-06-25 devnull 	disp->black = allocimage(disp, Rect(0, 0, 1, 1), GREY1, 1, DBlack);
278 74dc60da 2006-06-25 devnull 	if(disp->white == nil || disp->black == nil){
279 74dc60da 2006-06-25 devnull 		free(disp->white);
280 74dc60da 2006-06-25 devnull 		free(disp->black);
281 74dc60da 2006-06-25 devnull 		goto Error4;
282 74dc60da 2006-06-25 devnull 	}
283 74dc60da 2006-06-25 devnull 	
284 74dc60da 2006-06-25 devnull 	disp->opaque = disp->white;
285 74dc60da 2006-06-25 devnull 	disp->transparent = disp->black;
286 74dc60da 2006-06-25 devnull 
287 74dc60da 2006-06-25 devnull 	return disp;
288 74dc60da 2006-06-25 devnull }
289 74dc60da 2006-06-25 devnull 
290 76193d7c 2003-09-30 devnull /*
291 76193d7c 2003-09-30 devnull  * Call with d unlocked.
292 76193d7c 2003-09-30 devnull  * Note that disp->defaultfont and defaultsubfont are not freed here.
293 76193d7c 2003-09-30 devnull  */
294 76193d7c 2003-09-30 devnull void
295 76193d7c 2003-09-30 devnull closedisplay(Display *disp)
296 76193d7c 2003-09-30 devnull {
297 76193d7c 2003-09-30 devnull 	int fd;
298 76193d7c 2003-09-30 devnull 	char buf[128];
299 76193d7c 2003-09-30 devnull 
300 76193d7c 2003-09-30 devnull 	if(disp == nil)
301 76193d7c 2003-09-30 devnull 		return;
302 76193d7c 2003-09-30 devnull 	if(disp == display)
303 76193d7c 2003-09-30 devnull 		display = nil;
304 76193d7c 2003-09-30 devnull 	if(disp->oldlabel[0]){
305 76193d7c 2003-09-30 devnull 		snprint(buf, sizeof buf, "%s/label", disp->windir);
306 76193d7c 2003-09-30 devnull 		fd = open(buf, OWRITE);
307 76193d7c 2003-09-30 devnull 		if(fd >= 0){
308 76193d7c 2003-09-30 devnull 			write(fd, disp->oldlabel, strlen(disp->oldlabel));
309 76193d7c 2003-09-30 devnull 			close(fd);
310 76193d7c 2003-09-30 devnull 		}
311 76193d7c 2003-09-30 devnull 	}
312 76193d7c 2003-09-30 devnull 
313 76193d7c 2003-09-30 devnull 	free(disp->devdir);
314 76193d7c 2003-09-30 devnull 	free(disp->windir);
315 297cded7 2005-12-29 devnull 	if(disp->white)
316 297cded7 2005-12-29 devnull 		freeimage(disp->white);
317 297cded7 2005-12-29 devnull 	if(disp->black)
318 297cded7 2005-12-29 devnull 		freeimage(disp->black);
319 74dc60da 2006-06-25 devnull 	if(disp->srvfd >= 0)
320 74dc60da 2006-06-25 devnull 		close(disp->srvfd);
321 76193d7c 2003-09-30 devnull 	free(disp);
322 76193d7c 2003-09-30 devnull }
323 76193d7c 2003-09-30 devnull 
324 76193d7c 2003-09-30 devnull void
325 76193d7c 2003-09-30 devnull lockdisplay(Display *disp)
326 76193d7c 2003-09-30 devnull {
327 76193d7c 2003-09-30 devnull 	if(debuglockdisplay){
328 76193d7c 2003-09-30 devnull 		/* avoid busy looping; it's rare we collide anyway */
329 76193d7c 2003-09-30 devnull 		while(!canqlock(&disp->qlock)){
330 76193d7c 2003-09-30 devnull 			fprint(1, "proc %d waiting for display lock...\n", getpid());
331 76193d7c 2003-09-30 devnull 			sleep(1000);
332 76193d7c 2003-09-30 devnull 		}
333 76193d7c 2003-09-30 devnull 	}else
334 76193d7c 2003-09-30 devnull 		qlock(&disp->qlock);
335 76193d7c 2003-09-30 devnull }
336 76193d7c 2003-09-30 devnull 
337 76193d7c 2003-09-30 devnull void
338 76193d7c 2003-09-30 devnull unlockdisplay(Display *disp)
339 76193d7c 2003-09-30 devnull {
340 76193d7c 2003-09-30 devnull 	qunlock(&disp->qlock);
341 76193d7c 2003-09-30 devnull }
342 76193d7c 2003-09-30 devnull 
343 76193d7c 2003-09-30 devnull void
344 76193d7c 2003-09-30 devnull drawerror(Display *d, char *s)
345 76193d7c 2003-09-30 devnull {
346 76193d7c 2003-09-30 devnull 	char err[ERRMAX];
347 76193d7c 2003-09-30 devnull 
348 76193d7c 2003-09-30 devnull 	if(d->error)
349 76193d7c 2003-09-30 devnull 		d->error(d, s);
350 76193d7c 2003-09-30 devnull 	else{
351 76193d7c 2003-09-30 devnull 		errstr(err, sizeof err);
352 76193d7c 2003-09-30 devnull 		fprint(2, "draw: %s: %s\n", s, err);
353 76193d7c 2003-09-30 devnull 		exits(s);
354 76193d7c 2003-09-30 devnull 	}
355 76193d7c 2003-09-30 devnull }
356 76193d7c 2003-09-30 devnull 
357 76193d7c 2003-09-30 devnull static
358 76193d7c 2003-09-30 devnull int
359 76193d7c 2003-09-30 devnull doflush(Display *d)
360 76193d7c 2003-09-30 devnull {
361 76193d7c 2003-09-30 devnull 	int n;
362 76193d7c 2003-09-30 devnull 
363 76193d7c 2003-09-30 devnull 	n = d->bufp-d->buf;
364 76193d7c 2003-09-30 devnull 	if(n <= 0)
365 76193d7c 2003-09-30 devnull 		return 1;
366 76193d7c 2003-09-30 devnull 
367 74dc60da 2006-06-25 devnull 	if(_displaywrdraw(d, d->buf, n) != n){
368 76193d7c 2003-09-30 devnull 		if(_drawdebug)
369 76193d7c 2003-09-30 devnull 			fprint(2, "flushimage fail: d=%p: %r\n", d); /**/
370 76193d7c 2003-09-30 devnull 		d->bufp = d->buf;	/* might as well; chance of continuing */
371 76193d7c 2003-09-30 devnull 		return -1;
372 76193d7c 2003-09-30 devnull 	}
373 76193d7c 2003-09-30 devnull 	d->bufp = d->buf;
374 76193d7c 2003-09-30 devnull 	return 1;
375 76193d7c 2003-09-30 devnull }
376 76193d7c 2003-09-30 devnull 
377 76193d7c 2003-09-30 devnull int
378 76193d7c 2003-09-30 devnull flushimage(Display *d, int visible)
379 76193d7c 2003-09-30 devnull {
380 54bebe6a 2012-09-17 rsc 	if(visible == 1 && visibleclicks && mousebuttons && _drawmouse.buttons) {
381 54bebe6a 2012-09-17 rsc 		Rectangle r, r1;
382 54bebe6a 2012-09-17 rsc 		int ret;
383 54bebe6a 2012-09-17 rsc 
384 54bebe6a 2012-09-17 rsc 		r = mousebuttons->r;
385 54bebe6a 2012-09-17 rsc 		r = rectaddpt(r, _drawmouse.xy);
386 54bebe6a 2012-09-17 rsc 		r = rectaddpt(r, Pt(-Dx(mousebuttons->r)/2, -Dy(mousebuttons->r)-3));
387 54bebe6a 2012-09-17 rsc 		drawop(mousesave, mousesave->r, screen, nil, r.min, S);
388 54bebe6a 2012-09-17 rsc 		
389 54bebe6a 2012-09-17 rsc 		r1 = rectaddpt(Rect(0, 0, 22, 22), r.min);
390 54bebe6a 2012-09-17 rsc 		if(_drawmouse.buttons & 1)
391 54bebe6a 2012-09-17 rsc 			drawop(screen, r1, mousebuttons, nil, ZP, S);
392 54bebe6a 2012-09-17 rsc 		r1 = rectaddpt(r1, Pt(21, 0));
393 54bebe6a 2012-09-17 rsc 		if(_drawmouse.buttons & 2)
394 54bebe6a 2012-09-17 rsc 			drawop(screen, r1, mousebuttons, nil, Pt(21, 0), S);
395 54bebe6a 2012-09-17 rsc 		r1 = rectaddpt(r1, Pt(21, 0));
396 54bebe6a 2012-09-17 rsc 		if(_drawmouse.buttons & 4)
397 54bebe6a 2012-09-17 rsc 			drawop(screen, r1, mousebuttons, nil, Pt(42, 0), S);
398 54bebe6a 2012-09-17 rsc 		ret = flushimage(d, 2);
399 54bebe6a 2012-09-17 rsc 		drawop(screen, r, mousesave, nil, ZP, S);
400 54bebe6a 2012-09-17 rsc 		return ret;
401 54bebe6a 2012-09-17 rsc 	}
402 54bebe6a 2012-09-17 rsc 	
403 76193d7c 2003-09-30 devnull 	if(visible){
404 76193d7c 2003-09-30 devnull 		*d->bufp++ = 'v';	/* five bytes always reserved for this */
405 76193d7c 2003-09-30 devnull 		if(d->_isnewdisplay){
406 76193d7c 2003-09-30 devnull 			BPLONG(d->bufp, d->screenimage->id);
407 76193d7c 2003-09-30 devnull 			d->bufp += 4;
408 76193d7c 2003-09-30 devnull 		}
409 76193d7c 2003-09-30 devnull 	}
410 76193d7c 2003-09-30 devnull 	return doflush(d);
411 76193d7c 2003-09-30 devnull }
412 76193d7c 2003-09-30 devnull 
413 76193d7c 2003-09-30 devnull uchar*
414 76193d7c 2003-09-30 devnull bufimage(Display *d, int n)
415 76193d7c 2003-09-30 devnull {
416 76193d7c 2003-09-30 devnull 	uchar *p;
417 76193d7c 2003-09-30 devnull 
418 148f25d3 2005-11-07 devnull 	if(n<0 || d == nil || n>d->bufsize){
419 148f25d3 2005-11-07 devnull 		abort();
420 76193d7c 2003-09-30 devnull 		werrstr("bad count in bufimage");
421 76193d7c 2003-09-30 devnull 		return 0;
422 76193d7c 2003-09-30 devnull 	}
423 76193d7c 2003-09-30 devnull 	if(d->bufp+n > d->buf+d->bufsize)
424 76193d7c 2003-09-30 devnull 		if(doflush(d) < 0)
425 76193d7c 2003-09-30 devnull 			return 0;
426 76193d7c 2003-09-30 devnull 	p = d->bufp;
427 76193d7c 2003-09-30 devnull 	d->bufp += n;
428 76193d7c 2003-09-30 devnull 	return p;
429 76193d7c 2003-09-30 devnull }
430 76193d7c 2003-09-30 devnull 
431 9f385187 2012-11-26 rsc int
432 9f385187 2012-11-26 rsc scalesize(Display *d, int n)
433 9f385187 2012-11-26 rsc {
434 9f385187 2012-11-26 rsc 	if(d == nil || d->dpi <= DefaultDPI)
435 9f385187 2012-11-26 rsc 		return n;
436 9f385187 2012-11-26 rsc 	return (n*d->dpi+DefaultDPI/2)/DefaultDPI;
437 9f385187 2012-11-26 rsc }