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 Screen	*_screen;
 12 76193d7c 2003-09-30 devnull 
 13 b20f06ab 2004-12-26 devnull int		debuglockdisplay = 1;
 14 74dc60da 2006-06-25 devnull char	*winsize;
 15 76193d7c 2003-09-30 devnull 
 16 54bebe6a 2012-09-17 rsc int		visibleclicks = 0;
 17 54bebe6a 2012-09-17 rsc Image	*mousebuttons;
 18 54bebe6a 2012-09-17 rsc Image	*mousesave;
 19 54bebe6a 2012-09-17 rsc Mouse	_drawmouse;
 20 54bebe6a 2012-09-17 rsc 
 21 9e0d3750 2017-01-06 rsc void
 22 9e0d3750 2017-01-06 rsc needdisplay(void)
 23 9e0d3750 2017-01-06 rsc {
 24 9e0d3750 2017-01-06 rsc }
 25 9e0d3750 2017-01-06 rsc 
 26 abe4cd41 2005-07-27 devnull /*
 27 76193d7c 2003-09-30 devnull static void
 28 76193d7c 2003-09-30 devnull drawshutdown(void)
 29 76193d7c 2003-09-30 devnull {
 30 76193d7c 2003-09-30 devnull 	Display *d;
 31 76193d7c 2003-09-30 devnull 
 32 76193d7c 2003-09-30 devnull 	d = display;
 33 76193d7c 2003-09-30 devnull 	if(d){
 34 76193d7c 2003-09-30 devnull 		display = nil;
 35 76193d7c 2003-09-30 devnull 		closedisplay(d);
 36 76193d7c 2003-09-30 devnull 	}
 37 76193d7c 2003-09-30 devnull }
 38 abe4cd41 2005-07-27 devnull */
 39 76193d7c 2003-09-30 devnull 
 40 76193d7c 2003-09-30 devnull int
 41 74dc60da 2006-06-25 devnull geninitdraw(char *devdir, void(*error)(Display*, char*), char *fontname, char *label, char *windir, int ref)
 42 76193d7c 2003-09-30 devnull {
 43 16d00819 2018-11-16 rsc 	char *p;
 44 76193d7c 2003-09-30 devnull 
 45 74dc60da 2006-06-25 devnull 	if(label == nil)
 46 74dc60da 2006-06-25 devnull 		label = argv0;
 47 74dc60da 2006-06-25 devnull 	display = _initdisplay(error, label);
 48 76193d7c 2003-09-30 devnull 	if(display == nil)
 49 76193d7c 2003-09-30 devnull 		return -1;
 50 76193d7c 2003-09-30 devnull 
 51 76193d7c 2003-09-30 devnull 	/*
 52 76193d7c 2003-09-30 devnull 	 * Set up default font
 53 76193d7c 2003-09-30 devnull 	 */
 54 16d00819 2018-11-16 rsc 	if(openfont(display, "*default*") == 0) {
 55 76193d7c 2003-09-30 devnull 		fprint(2, "imageinit: can't open default subfont: %r\n");
 56 76193d7c 2003-09-30 devnull     Error:
 57 76193d7c 2003-09-30 devnull 		closedisplay(display);
 58 76193d7c 2003-09-30 devnull 		display = nil;
 59 76193d7c 2003-09-30 devnull 		return -1;
 60 76193d7c 2003-09-30 devnull 	}
 61 76193d7c 2003-09-30 devnull 	if(fontname == nil)
 62 74dc60da 2006-06-25 devnull 		fontname = getenv("font");
 63 76193d7c 2003-09-30 devnull 
 64 76193d7c 2003-09-30 devnull 	/*
 65 76193d7c 2003-09-30 devnull 	 * Build fonts with caches==depth of screen, for speed.
 66 76193d7c 2003-09-30 devnull 	 * If conversion were faster, we'd use 0 and save memory.
 67 76193d7c 2003-09-30 devnull 	 */
 68 16d00819 2018-11-16 rsc 	if(fontname == nil)
 69 16d00819 2018-11-16 rsc 		fontname = strdup("*default*");
 70 16d00819 2018-11-16 rsc 
 71 16d00819 2018-11-16 rsc 	font = openfont(display, fontname);
 72 16d00819 2018-11-16 rsc 	if(font == nil){
 73 16d00819 2018-11-16 rsc 		fprint(2, "imageinit: can't open font %s: %r\n", fontname);
 74 16d00819 2018-11-16 rsc 		goto Error;
 75 76193d7c 2003-09-30 devnull 	}
 76 76193d7c 2003-09-30 devnull 	display->defaultfont = font;
 77 76193d7c 2003-09-30 devnull 
 78 670dd11a 2005-03-18 devnull 	_screen = allocscreen(display->image, display->white, 0);
 79 74dc60da 2006-06-25 devnull 	display->screenimage = display->image;	/* _allocwindow wants screenimage->chan */
 80 670dd11a 2005-03-18 devnull 	screen = _allocwindow(nil, _screen, display->image->r, Refnone, DWhite);
 81 74dc60da 2006-06-25 devnull 	if(screen == nil){
 82 74dc60da 2006-06-25 devnull 		fprint(2, "_allocwindow: %r\n");
 83 74dc60da 2006-06-25 devnull 		goto Error;
 84 74dc60da 2006-06-25 devnull 	}
 85 670dd11a 2005-03-18 devnull 	display->screenimage = screen;
 86 7ba8aa0c 2005-07-24 devnull 	draw(screen, screen->r, display->white, nil, ZP);
 87 670dd11a 2005-03-18 devnull 	flushimage(display, 1);
 88 670dd11a 2005-03-18 devnull 
 89 54bebe6a 2012-09-17 rsc 	p = getenv("visibleclicks");
 90 54bebe6a 2012-09-17 rsc 	visibleclicks = p != nil && *p == '1';
 91 54bebe6a 2012-09-17 rsc 	if(visibleclicks) {
 92 54bebe6a 2012-09-17 rsc 		Font *f;
 93 fa325e9b 2020-01-10 cross 
 94 54bebe6a 2012-09-17 rsc 		f = display->defaultfont;
 95 54bebe6a 2012-09-17 rsc 		mousebuttons = allocimage(display, Rect(0,0,64,22), screen->chan, 0, DWhite);
 96 54bebe6a 2012-09-17 rsc 		border(mousebuttons, mousebuttons->r, 1, display->black, ZP);
 97 54bebe6a 2012-09-17 rsc 		border(mousebuttons, Rect(0, 0, 22, 22), 1, display->black, ZP);
 98 54bebe6a 2012-09-17 rsc 		border(mousebuttons, Rect(42, 0, 64, 22), 1, display->black, ZP);
 99 54bebe6a 2012-09-17 rsc 		string(mousebuttons, Pt(10-stringwidth(display->defaultfont, "1")/2, 11-f->height/2), display->black, ZP, display->defaultfont, "1");
100 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");
101 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");
102 54bebe6a 2012-09-17 rsc 		mousesave = allocimage(display, Rect(0,0,64,22), screen->chan, 0, 0);
103 54bebe6a 2012-09-17 rsc 	}
104 54bebe6a 2012-09-17 rsc 
105 abe4cd41 2005-07-27 devnull 	/*
106 abe4cd41 2005-07-27 devnull 	 * I don't see any reason to go away gracefully,
107 abe4cd41 2005-07-27 devnull 	 * and if some other proc exits holding the display
108 abe4cd41 2005-07-27 devnull 	 * lock, this atexit call never finishes.
109 abe4cd41 2005-07-27 devnull 	 *
110 abe4cd41 2005-07-27 devnull 	 * atexit(drawshutdown);
111 abe4cd41 2005-07-27 devnull 	 */
112 76193d7c 2003-09-30 devnull 	return 1;
113 74dc60da 2006-06-25 devnull }
114 74dc60da 2006-06-25 devnull 
115 74dc60da 2006-06-25 devnull int
116 74dc60da 2006-06-25 devnull initdraw(void (*error)(Display*, char*), char *fontname, char *label)
117 74dc60da 2006-06-25 devnull {
118 74dc60da 2006-06-25 devnull 	return geninitdraw("/dev", error, fontname, label, "/dev", Refnone);
119 74dc60da 2006-06-25 devnull }
120 74dc60da 2006-06-25 devnull 
121 74dc60da 2006-06-25 devnull extern int _freeimage1(Image*);
122 74dc60da 2006-06-25 devnull 
123 74dc60da 2006-06-25 devnull static Image*
124 74dc60da 2006-06-25 devnull getimage0(Display *d, Image *image)
125 74dc60da 2006-06-25 devnull {
126 74dc60da 2006-06-25 devnull 	char info[12*12+1];
127 74dc60da 2006-06-25 devnull 	uchar *a;
128 74dc60da 2006-06-25 devnull 	int n;
129 74dc60da 2006-06-25 devnull 
130 74dc60da 2006-06-25 devnull 	/*
131 74dc60da 2006-06-25 devnull 	 * If there's an old screen, it has id 0.  The 'J' request below
132 fa325e9b 2020-01-10 cross 	 * will try to install the new screen as id 0, so the old one
133 74dc60da 2006-06-25 devnull 	 * must be freed first.
134 74dc60da 2006-06-25 devnull 	 */
135 74dc60da 2006-06-25 devnull 	if(image){
136 74dc60da 2006-06-25 devnull 		_freeimage1(image);
137 74dc60da 2006-06-25 devnull 		memset(image, 0, sizeof(Image));
138 74dc60da 2006-06-25 devnull 	}
139 74dc60da 2006-06-25 devnull 
140 74dc60da 2006-06-25 devnull 	a = bufimage(d, 2);
141 74dc60da 2006-06-25 devnull 	a[0] = 'J';
142 74dc60da 2006-06-25 devnull 	a[1] = 'I';
143 74dc60da 2006-06-25 devnull 	if(flushimage(d, 0) < 0){
144 74dc60da 2006-06-25 devnull 		fprint(2, "cannot read screen info: %r\n");
145 74dc60da 2006-06-25 devnull 		return nil;
146 74dc60da 2006-06-25 devnull 	}
147 74dc60da 2006-06-25 devnull 
148 74dc60da 2006-06-25 devnull 	n = _displayrddraw(d, info, sizeof info);
149 74dc60da 2006-06-25 devnull 	if(n != 12*12){
150 74dc60da 2006-06-25 devnull 		fprint(2, "short screen info\n");
151 74dc60da 2006-06-25 devnull 		return nil;
152 74dc60da 2006-06-25 devnull 	}
153 74dc60da 2006-06-25 devnull 
154 74dc60da 2006-06-25 devnull 	if(image == nil){
155 74dc60da 2006-06-25 devnull 		image = mallocz(sizeof(Image), 1);
156 74dc60da 2006-06-25 devnull 		if(image == nil){
157 74dc60da 2006-06-25 devnull 			fprint(2, "cannot allocate image: %r\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 
162 74dc60da 2006-06-25 devnull 	image->display = d;
163 74dc60da 2006-06-25 devnull 	image->id = 0;
164 74dc60da 2006-06-25 devnull 	image->chan = strtochan(info+2*12);
165 74dc60da 2006-06-25 devnull 	image->depth = chantodepth(image->chan);
166 74dc60da 2006-06-25 devnull 	image->repl = atoi(info+3*12);
167 74dc60da 2006-06-25 devnull 	image->r.min.x = atoi(info+4*12);
168 74dc60da 2006-06-25 devnull 	image->r.min.y = atoi(info+5*12);
169 74dc60da 2006-06-25 devnull 	image->r.max.x = atoi(info+6*12);
170 74dc60da 2006-06-25 devnull 	image->r.max.y = atoi(info+7*12);
171 74dc60da 2006-06-25 devnull 	image->clipr.min.x = atoi(info+8*12);
172 74dc60da 2006-06-25 devnull 	image->clipr.min.y = atoi(info+9*12);
173 74dc60da 2006-06-25 devnull 	image->clipr.max.x = atoi(info+10*12);
174 74dc60da 2006-06-25 devnull 	image->clipr.max.y = atoi(info+11*12);
175 fa325e9b 2020-01-10 cross 
176 d0e07019 2012-11-26 rsc 	a = bufimage(d, 3);
177 d0e07019 2012-11-26 rsc 	a[0] = 'q';
178 d0e07019 2012-11-26 rsc 	a[1] = 1;
179 d0e07019 2012-11-26 rsc 	a[2] = 'd';
180 d0e07019 2012-11-26 rsc 	d->dpi = 100;
181 d0e07019 2012-11-26 rsc 	if(flushimage(d, 0) >= 0 && _displayrddraw(d, info, 12) == 12)
182 d0e07019 2012-11-26 rsc 		d->dpi = atoi(info);
183 d0e07019 2012-11-26 rsc 
184 74dc60da 2006-06-25 devnull 	return image;
185 74dc60da 2006-06-25 devnull }
186 74dc60da 2006-06-25 devnull 
187 74dc60da 2006-06-25 devnull /*
188 74dc60da 2006-06-25 devnull  * Attach, or possibly reattach, to window.
189 74dc60da 2006-06-25 devnull  * If reattaching, maintain value of screen pointer.
190 74dc60da 2006-06-25 devnull  */
191 74dc60da 2006-06-25 devnull int
192 74dc60da 2006-06-25 devnull getwindow(Display *d, int ref)
193 74dc60da 2006-06-25 devnull {
194 74dc60da 2006-06-25 devnull 	Image *i, *oi;
195 213fc4f6 2015-02-17 rsc 	Font *f;
196 fa325e9b 2020-01-10 cross 
197 74dc60da 2006-06-25 devnull 	/* XXX check for destroyed? */
198 fa325e9b 2020-01-10 cross 
199 74dc60da 2006-06-25 devnull 	/*
200 74dc60da 2006-06-25 devnull 	 * Libdraw promises not to change the value of "screen",
201 74dc60da 2006-06-25 devnull 	 * so we have to reuse the image structure
202 74dc60da 2006-06-25 devnull 	 * memory we already have.
203 74dc60da 2006-06-25 devnull 	 */
204 74dc60da 2006-06-25 devnull 	oi = d->image;
205 74dc60da 2006-06-25 devnull 	i = getimage0(d, oi);
206 74dc60da 2006-06-25 devnull 	if(i == nil)
207 74dc60da 2006-06-25 devnull 		sysfatal("getwindow failed");
208 74dc60da 2006-06-25 devnull 	d->image = i;
209 74dc60da 2006-06-25 devnull 	/* fprint(2, "getwindow %p -> %p\n", oi, i); */
210 74dc60da 2006-06-25 devnull 
211 74dc60da 2006-06-25 devnull 	freescreen(_screen);
212 74dc60da 2006-06-25 devnull 	_screen = allocscreen(i, d->white, 0);
213 74dc60da 2006-06-25 devnull 	_freeimage1(screen);
214 74dc60da 2006-06-25 devnull 	screen = _allocwindow(screen, _screen, i->r, ref, DWhite);
215 74dc60da 2006-06-25 devnull 	d->screenimage = screen;
216 213fc4f6 2015-02-17 rsc 
217 213fc4f6 2015-02-17 rsc 
218 213fc4f6 2015-02-17 rsc 	if(d->dpi >= DefaultDPI*3/2) {
219 213fc4f6 2015-02-17 rsc 		for(f=d->firstfont; f != nil; f=f->next)
220 213fc4f6 2015-02-17 rsc 			loadhidpi(f);
221 213fc4f6 2015-02-17 rsc 	} else {
222 213fc4f6 2015-02-17 rsc 		for(f=d->firstfont; f != nil; f=f->next)
223 213fc4f6 2015-02-17 rsc 			if(f->lodpi != nil && f->lodpi != f)
224 213fc4f6 2015-02-17 rsc 				swapfont(f, &f->hidpi, &f->lodpi);
225 213fc4f6 2015-02-17 rsc 	}
226 213fc4f6 2015-02-17 rsc 
227 74dc60da 2006-06-25 devnull 	return 0;
228 76193d7c 2003-09-30 devnull }
229 76193d7c 2003-09-30 devnull 
230 74dc60da 2006-06-25 devnull Display*
231 74dc60da 2006-06-25 devnull _initdisplay(void (*error)(Display*, char*), char *label)
232 74dc60da 2006-06-25 devnull {
233 74dc60da 2006-06-25 devnull 	Display *disp;
234 74dc60da 2006-06-25 devnull 	Image *image;
235 74dc60da 2006-06-25 devnull 
236 74dc60da 2006-06-25 devnull 	fmtinstall('P', Pfmt);
237 74dc60da 2006-06-25 devnull 	fmtinstall('R', Rfmt);
238 74dc60da 2006-06-25 devnull 
239 74dc60da 2006-06-25 devnull 	disp = mallocz(sizeof(Display), 1);
240 74dc60da 2006-06-25 devnull 	if(disp == nil){
241 74dc60da 2006-06-25 devnull     Error1:
242 74dc60da 2006-06-25 devnull 		return nil;
243 74dc60da 2006-06-25 devnull 	}
244 74dc60da 2006-06-25 devnull 	disp->srvfd = -1;
245 74dc60da 2006-06-25 devnull 	image = nil;
246 74dc60da 2006-06-25 devnull 	if(0){
247 74dc60da 2006-06-25 devnull     Error2:
248 74dc60da 2006-06-25 devnull 		free(image);
249 74dc60da 2006-06-25 devnull 		free(disp);
250 74dc60da 2006-06-25 devnull 		goto Error1;
251 74dc60da 2006-06-25 devnull 	}
252 74dc60da 2006-06-25 devnull 	disp->bufsize = 65500;
253 74dc60da 2006-06-25 devnull 	disp->buf = malloc(disp->bufsize+5);	/* +5 for flush message */
254 74dc60da 2006-06-25 devnull 	disp->bufp = disp->buf;
255 74dc60da 2006-06-25 devnull 	disp->error = error;
256 74dc60da 2006-06-25 devnull 	qlock(&disp->qlock);
257 74dc60da 2006-06-25 devnull 
258 74dc60da 2006-06-25 devnull 	if(disp->buf == nil)
259 74dc60da 2006-06-25 devnull 		goto Error2;
260 74dc60da 2006-06-25 devnull 	if(0){
261 74dc60da 2006-06-25 devnull     Error3:
262 74dc60da 2006-06-25 devnull 		free(disp->buf);
263 74dc60da 2006-06-25 devnull 		goto Error2;
264 74dc60da 2006-06-25 devnull 	}
265 fa325e9b 2020-01-10 cross 
266 74dc60da 2006-06-25 devnull 	if(_displaymux(disp) < 0
267 74dc60da 2006-06-25 devnull 	|| _displayconnect(disp) < 0
268 74dc60da 2006-06-25 devnull 	|| _displayinit(disp, label, winsize) < 0)
269 74dc60da 2006-06-25 devnull 		goto Error3;
270 74dc60da 2006-06-25 devnull 	if(0){
271 74dc60da 2006-06-25 devnull     Error4:
272 74dc60da 2006-06-25 devnull 		close(disp->srvfd);
273 74dc60da 2006-06-25 devnull 		goto Error3;
274 74dc60da 2006-06-25 devnull 	}
275 74dc60da 2006-06-25 devnull 
276 74dc60da 2006-06-25 devnull 	image = getimage0(disp, nil);
277 74dc60da 2006-06-25 devnull 	if(image == nil)
278 74dc60da 2006-06-25 devnull 		goto Error4;
279 fa325e9b 2020-01-10 cross 
280 74dc60da 2006-06-25 devnull 	disp->image = image;
281 74dc60da 2006-06-25 devnull 	disp->white = allocimage(disp, Rect(0, 0, 1, 1), GREY1, 1, DWhite);
282 74dc60da 2006-06-25 devnull 	disp->black = allocimage(disp, Rect(0, 0, 1, 1), GREY1, 1, DBlack);
283 74dc60da 2006-06-25 devnull 	if(disp->white == nil || disp->black == nil){
284 74dc60da 2006-06-25 devnull 		free(disp->white);
285 74dc60da 2006-06-25 devnull 		free(disp->black);
286 74dc60da 2006-06-25 devnull 		goto Error4;
287 74dc60da 2006-06-25 devnull 	}
288 fa325e9b 2020-01-10 cross 
289 74dc60da 2006-06-25 devnull 	disp->opaque = disp->white;
290 74dc60da 2006-06-25 devnull 	disp->transparent = disp->black;
291 74dc60da 2006-06-25 devnull 
292 74dc60da 2006-06-25 devnull 	return disp;
293 74dc60da 2006-06-25 devnull }
294 74dc60da 2006-06-25 devnull 
295 76193d7c 2003-09-30 devnull /*
296 76193d7c 2003-09-30 devnull  * Call with d unlocked.
297 16d00819 2018-11-16 rsc  * Note that disp->defaultfont is not freed here.
298 76193d7c 2003-09-30 devnull  */
299 76193d7c 2003-09-30 devnull void
300 76193d7c 2003-09-30 devnull closedisplay(Display *disp)
301 76193d7c 2003-09-30 devnull {
302 76193d7c 2003-09-30 devnull 	int fd;
303 76193d7c 2003-09-30 devnull 	char buf[128];
304 76193d7c 2003-09-30 devnull 
305 76193d7c 2003-09-30 devnull 	if(disp == nil)
306 76193d7c 2003-09-30 devnull 		return;
307 76193d7c 2003-09-30 devnull 	if(disp == display)
308 76193d7c 2003-09-30 devnull 		display = nil;
309 76193d7c 2003-09-30 devnull 	if(disp->oldlabel[0]){
310 76193d7c 2003-09-30 devnull 		snprint(buf, sizeof buf, "%s/label", disp->windir);
311 76193d7c 2003-09-30 devnull 		fd = open(buf, OWRITE);
312 76193d7c 2003-09-30 devnull 		if(fd >= 0){
313 76193d7c 2003-09-30 devnull 			write(fd, disp->oldlabel, strlen(disp->oldlabel));
314 76193d7c 2003-09-30 devnull 			close(fd);
315 76193d7c 2003-09-30 devnull 		}
316 76193d7c 2003-09-30 devnull 	}
317 76193d7c 2003-09-30 devnull 
318 76193d7c 2003-09-30 devnull 	free(disp->devdir);
319 76193d7c 2003-09-30 devnull 	free(disp->windir);
320 297cded7 2005-12-29 devnull 	if(disp->white)
321 297cded7 2005-12-29 devnull 		freeimage(disp->white);
322 297cded7 2005-12-29 devnull 	if(disp->black)
323 297cded7 2005-12-29 devnull 		freeimage(disp->black);
324 74dc60da 2006-06-25 devnull 	if(disp->srvfd >= 0)
325 74dc60da 2006-06-25 devnull 		close(disp->srvfd);
326 76193d7c 2003-09-30 devnull 	free(disp);
327 76193d7c 2003-09-30 devnull }
328 76193d7c 2003-09-30 devnull 
329 76193d7c 2003-09-30 devnull void
330 76193d7c 2003-09-30 devnull lockdisplay(Display *disp)
331 76193d7c 2003-09-30 devnull {
332 76193d7c 2003-09-30 devnull 	if(debuglockdisplay){
333 76193d7c 2003-09-30 devnull 		/* avoid busy looping; it's rare we collide anyway */
334 76193d7c 2003-09-30 devnull 		while(!canqlock(&disp->qlock)){
335 76193d7c 2003-09-30 devnull 			fprint(1, "proc %d waiting for display lock...\n", getpid());
336 76193d7c 2003-09-30 devnull 			sleep(1000);
337 76193d7c 2003-09-30 devnull 		}
338 76193d7c 2003-09-30 devnull 	}else
339 76193d7c 2003-09-30 devnull 		qlock(&disp->qlock);
340 76193d7c 2003-09-30 devnull }
341 76193d7c 2003-09-30 devnull 
342 76193d7c 2003-09-30 devnull void
343 76193d7c 2003-09-30 devnull unlockdisplay(Display *disp)
344 76193d7c 2003-09-30 devnull {
345 76193d7c 2003-09-30 devnull 	qunlock(&disp->qlock);
346 76193d7c 2003-09-30 devnull }
347 76193d7c 2003-09-30 devnull 
348 76193d7c 2003-09-30 devnull void
349 76193d7c 2003-09-30 devnull drawerror(Display *d, char *s)
350 76193d7c 2003-09-30 devnull {
351 76193d7c 2003-09-30 devnull 	char err[ERRMAX];
352 76193d7c 2003-09-30 devnull 
353 76193d7c 2003-09-30 devnull 	if(d->error)
354 76193d7c 2003-09-30 devnull 		d->error(d, s);
355 76193d7c 2003-09-30 devnull 	else{
356 76193d7c 2003-09-30 devnull 		errstr(err, sizeof err);
357 76193d7c 2003-09-30 devnull 		fprint(2, "draw: %s: %s\n", s, err);
358 76193d7c 2003-09-30 devnull 		exits(s);
359 76193d7c 2003-09-30 devnull 	}
360 76193d7c 2003-09-30 devnull }
361 76193d7c 2003-09-30 devnull 
362 76193d7c 2003-09-30 devnull static
363 76193d7c 2003-09-30 devnull int
364 76193d7c 2003-09-30 devnull doflush(Display *d)
365 76193d7c 2003-09-30 devnull {
366 76193d7c 2003-09-30 devnull 	int n;
367 76193d7c 2003-09-30 devnull 
368 76193d7c 2003-09-30 devnull 	n = d->bufp-d->buf;
369 76193d7c 2003-09-30 devnull 	if(n <= 0)
370 76193d7c 2003-09-30 devnull 		return 1;
371 76193d7c 2003-09-30 devnull 
372 74dc60da 2006-06-25 devnull 	if(_displaywrdraw(d, d->buf, n) != n){
373 76193d7c 2003-09-30 devnull 		if(_drawdebug)
374 76193d7c 2003-09-30 devnull 			fprint(2, "flushimage fail: d=%p: %r\n", d); /**/
375 76193d7c 2003-09-30 devnull 		d->bufp = d->buf;	/* might as well; chance of continuing */
376 76193d7c 2003-09-30 devnull 		return -1;
377 76193d7c 2003-09-30 devnull 	}
378 76193d7c 2003-09-30 devnull 	d->bufp = d->buf;
379 76193d7c 2003-09-30 devnull 	return 1;
380 76193d7c 2003-09-30 devnull }
381 76193d7c 2003-09-30 devnull 
382 76193d7c 2003-09-30 devnull int
383 76193d7c 2003-09-30 devnull flushimage(Display *d, int visible)
384 76193d7c 2003-09-30 devnull {
385 54bebe6a 2012-09-17 rsc 	if(visible == 1 && visibleclicks && mousebuttons && _drawmouse.buttons) {
386 54bebe6a 2012-09-17 rsc 		Rectangle r, r1;
387 54bebe6a 2012-09-17 rsc 		int ret;
388 54bebe6a 2012-09-17 rsc 
389 54bebe6a 2012-09-17 rsc 		r = mousebuttons->r;
390 54bebe6a 2012-09-17 rsc 		r = rectaddpt(r, _drawmouse.xy);
391 54bebe6a 2012-09-17 rsc 		r = rectaddpt(r, Pt(-Dx(mousebuttons->r)/2, -Dy(mousebuttons->r)-3));
392 54bebe6a 2012-09-17 rsc 		drawop(mousesave, mousesave->r, screen, nil, r.min, S);
393 fa325e9b 2020-01-10 cross 
394 54bebe6a 2012-09-17 rsc 		r1 = rectaddpt(Rect(0, 0, 22, 22), r.min);
395 54bebe6a 2012-09-17 rsc 		if(_drawmouse.buttons & 1)
396 54bebe6a 2012-09-17 rsc 			drawop(screen, r1, mousebuttons, nil, ZP, S);
397 54bebe6a 2012-09-17 rsc 		r1 = rectaddpt(r1, Pt(21, 0));
398 54bebe6a 2012-09-17 rsc 		if(_drawmouse.buttons & 2)
399 54bebe6a 2012-09-17 rsc 			drawop(screen, r1, mousebuttons, nil, Pt(21, 0), S);
400 54bebe6a 2012-09-17 rsc 		r1 = rectaddpt(r1, Pt(21, 0));
401 54bebe6a 2012-09-17 rsc 		if(_drawmouse.buttons & 4)
402 54bebe6a 2012-09-17 rsc 			drawop(screen, r1, mousebuttons, nil, Pt(42, 0), S);
403 54bebe6a 2012-09-17 rsc 		ret = flushimage(d, 2);
404 54bebe6a 2012-09-17 rsc 		drawop(screen, r, mousesave, nil, ZP, S);
405 54bebe6a 2012-09-17 rsc 		return ret;
406 54bebe6a 2012-09-17 rsc 	}
407 fa325e9b 2020-01-10 cross 
408 76193d7c 2003-09-30 devnull 	if(visible){
409 76193d7c 2003-09-30 devnull 		*d->bufp++ = 'v';	/* five bytes always reserved for this */
410 76193d7c 2003-09-30 devnull 		if(d->_isnewdisplay){
411 76193d7c 2003-09-30 devnull 			BPLONG(d->bufp, d->screenimage->id);
412 76193d7c 2003-09-30 devnull 			d->bufp += 4;
413 76193d7c 2003-09-30 devnull 		}
414 76193d7c 2003-09-30 devnull 	}
415 76193d7c 2003-09-30 devnull 	return doflush(d);
416 76193d7c 2003-09-30 devnull }
417 76193d7c 2003-09-30 devnull 
418 76193d7c 2003-09-30 devnull uchar*
419 76193d7c 2003-09-30 devnull bufimage(Display *d, int n)
420 76193d7c 2003-09-30 devnull {
421 76193d7c 2003-09-30 devnull 	uchar *p;
422 76193d7c 2003-09-30 devnull 
423 148f25d3 2005-11-07 devnull 	if(n<0 || d == nil || n>d->bufsize){
424 148f25d3 2005-11-07 devnull 		abort();
425 76193d7c 2003-09-30 devnull 		werrstr("bad count in bufimage");
426 76193d7c 2003-09-30 devnull 		return 0;
427 76193d7c 2003-09-30 devnull 	}
428 76193d7c 2003-09-30 devnull 	if(d->bufp+n > d->buf+d->bufsize)
429 76193d7c 2003-09-30 devnull 		if(doflush(d) < 0)
430 76193d7c 2003-09-30 devnull 			return 0;
431 76193d7c 2003-09-30 devnull 	p = d->bufp;
432 76193d7c 2003-09-30 devnull 	d->bufp += n;
433 76193d7c 2003-09-30 devnull 	return p;
434 76193d7c 2003-09-30 devnull }
435 76193d7c 2003-09-30 devnull 
436 9f385187 2012-11-26 rsc int
437 9f385187 2012-11-26 rsc scalesize(Display *d, int n)
438 9f385187 2012-11-26 rsc {
439 9f385187 2012-11-26 rsc 	if(d == nil || d->dpi <= DefaultDPI)
440 9f385187 2012-11-26 rsc 		return n;
441 9f385187 2012-11-26 rsc 	return (n*d->dpi+DefaultDPI/2)/DefaultDPI;
442 9f385187 2012-11-26 rsc }