1 b5990708 2003-09-30 devnull #include <u.h>
2 b5990708 2003-09-30 devnull #include <libc.h>
3 b5990708 2003-09-30 devnull #include <draw.h>
4 b5990708 2003-09-30 devnull #include <mouse.h>
5 b5990708 2003-09-30 devnull #include <frame.h>
7 b5990708 2003-09-30 devnull #define DELTA 25
8 b5990708 2003-09-30 devnull #define TMPSIZE 256
9 b5990708 2003-09-30 devnull static Frame frame;
13 b5990708 2003-09-30 devnull bxscan(Frame *f, Rune *sp, Rune *ep, Point *ppt)
15 b5990708 2003-09-30 devnull int w, c, nb, delta, nl, nr, rw;
16 b5990708 2003-09-30 devnull Frbox *b;
17 b5990708 2003-09-30 devnull char *s, tmp[TMPSIZE+3]; /* +3 for rune overflow */
18 b5990708 2003-09-30 devnull uchar *p;
20 b5990708 2003-09-30 devnull frame.r = f->r;
21 b5990708 2003-09-30 devnull frame.b = f->b;
22 b5990708 2003-09-30 devnull frame.font = f->font;
23 b5990708 2003-09-30 devnull frame.maxtab = f->maxtab;
24 b5990708 2003-09-30 devnull frame.nbox = 0;
25 b5990708 2003-09-30 devnull frame.nchars = 0;
26 b5990708 2003-09-30 devnull memmove(frame.cols, f->cols, sizeof frame.cols);
27 b5990708 2003-09-30 devnull delta = DELTA;
29 b5990708 2003-09-30 devnull for(nb=0; sp<ep && nl<=f->maxlines; nb++,frame.nbox++){
30 b5990708 2003-09-30 devnull if(nb == frame.nalloc){
31 b5990708 2003-09-30 devnull _frgrowbox(&frame, delta);
32 b5990708 2003-09-30 devnull if(delta < 10000)
33 b5990708 2003-09-30 devnull delta *= 2;
35 b5990708 2003-09-30 devnull b = &frame.box[nb];
37 b5990708 2003-09-30 devnull if(c=='\t' || c=='\n'){
38 b5990708 2003-09-30 devnull b->bc = c;
39 b5990708 2003-09-30 devnull b->wid = 5000;
40 b5990708 2003-09-30 devnull b->minwid = (c=='\n')? 0 : stringwidth(frame.font, " ");
41 b5990708 2003-09-30 devnull b->nrune = -1;
42 b5990708 2003-09-30 devnull if(c=='\n')
44 b5990708 2003-09-30 devnull frame.nchars++;
50 b5990708 2003-09-30 devnull while(sp < ep){
52 b5990708 2003-09-30 devnull if(c=='\t' || c=='\n')
54 b5990708 2003-09-30 devnull rw = runetochar(s, sp);
55 b5990708 2003-09-30 devnull if(s+rw >= tmp+TMPSIZE)
57 b5990708 2003-09-30 devnull w += runestringnwidth(frame.font, sp, 1);
62 b5990708 2003-09-30 devnull *s++ = 0;
63 b5990708 2003-09-30 devnull p = _frallocstr(f, s-tmp);
64 b5990708 2003-09-30 devnull b = &frame.box[nb];
65 b5990708 2003-09-30 devnull b->ptr = p;
66 b5990708 2003-09-30 devnull memmove(p, tmp, s-tmp);
67 b5990708 2003-09-30 devnull b->wid = w;
68 b5990708 2003-09-30 devnull b->nrune = nr;
69 b5990708 2003-09-30 devnull frame.nchars += nr;
72 b5990708 2003-09-30 devnull _frcklinewrap0(f, ppt, &frame.box[0]);
73 b5990708 2003-09-30 devnull return _frdraw(&frame, *ppt);
78 b5990708 2003-09-30 devnull chopframe(Frame *f, Point pt, ulong p, int bn)
80 b5990708 2003-09-30 devnull Frbox *b;
82 b5990708 2003-09-30 devnull for(b = &f->box[bn]; ; b++){
83 b5990708 2003-09-30 devnull if(b >= &f->box[f->nbox])
84 b5990708 2003-09-30 devnull drawerror(f->display, "endofframe");
85 b5990708 2003-09-30 devnull _frcklinewrap(f, &pt, b);
86 b5990708 2003-09-30 devnull if(pt.y >= f->r.max.y)
88 b5990708 2003-09-30 devnull p += NRUNE(b);
89 b5990708 2003-09-30 devnull _fradvance(f, &pt, b);
91 b5990708 2003-09-30 devnull f->nchars = p;
92 b5990708 2003-09-30 devnull f->nlines = f->maxlines;
93 b5990708 2003-09-30 devnull if(b<&f->box[f->nbox]) /* BUG */
94 b5990708 2003-09-30 devnull _frdelbox(f, (int)(b-f->box), f->nbox-1);
98 b5990708 2003-09-30 devnull frinsert(Frame *f, Rune *sp, Rune *ep, ulong p0)
100 b5990708 2003-09-30 devnull Point pt0, pt1, opt0, ppt0, ppt1, pt;
101 b5990708 2003-09-30 devnull Frbox *b;
102 b5990708 2003-09-30 devnull int n, n0, nn0, y;
103 b5990708 2003-09-30 devnull ulong cn0;
104 c3feb5c5 2012-10-16 rsc Image *col, *tcol;
105 b5990708 2003-09-30 devnull Rectangle r;
106 b5990708 2003-09-30 devnull static struct{
107 b5990708 2003-09-30 devnull Point pt0, pt1;
109 b5990708 2003-09-30 devnull static int nalloc=0;
110 b5990708 2003-09-30 devnull int npts;
112 b5990708 2003-09-30 devnull if(p0>f->nchars || sp==ep || f->b==nil)
114 b5990708 2003-09-30 devnull n0 = _frfindbox(f, 0, 0, p0);
115 b5990708 2003-09-30 devnull cn0 = p0;
116 b5990708 2003-09-30 devnull nn0 = n0;
117 b5990708 2003-09-30 devnull pt0 = _frptofcharnb(f, p0, n0);
118 b5990708 2003-09-30 devnull ppt0 = pt0;
119 b5990708 2003-09-30 devnull opt0 = pt0;
120 b5990708 2003-09-30 devnull pt1 = bxscan(f, sp, ep, &ppt0);
121 b5990708 2003-09-30 devnull ppt1 = pt1;
122 b5990708 2003-09-30 devnull if(n0 < f->nbox){
123 b5990708 2003-09-30 devnull _frcklinewrap(f, &pt0, b = &f->box[n0]); /* for frdrawsel() */
124 b5990708 2003-09-30 devnull _frcklinewrap0(f, &ppt1, b);
126 b5990708 2003-09-30 devnull f->modified = 1;
128 b5990708 2003-09-30 devnull * ppt0 and ppt1 are start and end of insertion as they will appear when
129 b5990708 2003-09-30 devnull * insertion is complete. pt0 is current location of insertion position
130 b5990708 2003-09-30 devnull * (p0); pt1 is terminal point (without line wrap) of insertion.
132 b5990708 2003-09-30 devnull if(f->p0 == f->p1)
133 b5990708 2003-09-30 devnull frtick(f, frptofchar(f, f->p0), 0);
136 b5990708 2003-09-30 devnull * Find point where old and new x's line up
137 b5990708 2003-09-30 devnull * Invariants:
138 b5990708 2003-09-30 devnull * pt0 is where the next box (b, n0) is now
139 b5990708 2003-09-30 devnull * pt1 is where it will be after the insertion
140 b5990708 2003-09-30 devnull * If pt1 goes off the rectangle, we can toss everything from there on
142 b5990708 2003-09-30 devnull for(b = &f->box[n0],npts=0;
143 b5990708 2003-09-30 devnull pt1.x!=pt0.x && pt1.y!=f->r.max.y && n0<f->nbox; b++,n0++,npts++){
144 b5990708 2003-09-30 devnull _frcklinewrap(f, &pt0, b);
145 b5990708 2003-09-30 devnull _frcklinewrap0(f, &pt1, b);
146 b5990708 2003-09-30 devnull if(b->nrune > 0){
147 b5990708 2003-09-30 devnull n = _frcanfit(f, pt1, b);
148 b5990708 2003-09-30 devnull if(n == 0)
149 b5990708 2003-09-30 devnull drawerror(f->display, "_frcanfit==0");
150 b5990708 2003-09-30 devnull if(n != b->nrune){
151 b5990708 2003-09-30 devnull _frsplitbox(f, n0, n);
152 b5990708 2003-09-30 devnull b = &f->box[n0];
155 b5990708 2003-09-30 devnull if(npts == nalloc){
156 b5990708 2003-09-30 devnull pts = realloc(pts, (npts+DELTA)*sizeof(pts[0]));
157 b5990708 2003-09-30 devnull nalloc += DELTA;
158 b5990708 2003-09-30 devnull b = &f->box[n0];
160 b5990708 2003-09-30 devnull pts[npts].pt0 = pt0;
161 b5990708 2003-09-30 devnull pts[npts].pt1 = pt1;
162 b5990708 2003-09-30 devnull /* has a text box overflowed off the frame? */
163 b5990708 2003-09-30 devnull if(pt1.y == f->r.max.y)
165 b5990708 2003-09-30 devnull _fradvance(f, &pt0, b);
166 b5990708 2003-09-30 devnull pt1.x += _frnewwid(f, pt1, b);
167 b5990708 2003-09-30 devnull cn0 += NRUNE(b);
169 b5990708 2003-09-30 devnull if(pt1.y > f->r.max.y)
170 b5990708 2003-09-30 devnull drawerror(f->display, "frinsert pt1 too far");
171 b5990708 2003-09-30 devnull if(pt1.y==f->r.max.y && n0<f->nbox){
172 b5990708 2003-09-30 devnull f->nchars -= _frstrlen(f, n0);
173 b5990708 2003-09-30 devnull _frdelbox(f, n0, f->nbox-1);
175 b5990708 2003-09-30 devnull if(n0 == f->nbox)
176 b5990708 2003-09-30 devnull f->nlines = (pt1.y-f->r.min.y)/f->font->height+(pt1.x>f->r.min.x);
177 b5990708 2003-09-30 devnull else if(pt1.y!=pt0.y){
178 b5990708 2003-09-30 devnull int q0, q1;
180 b5990708 2003-09-30 devnull y = f->r.max.y;
181 b5990708 2003-09-30 devnull q0 = pt0.y+f->font->height;
182 b5990708 2003-09-30 devnull q1 = pt1.y+f->font->height;
183 b5990708 2003-09-30 devnull f->nlines += (q1-q0)/f->font->height;
184 b5990708 2003-09-30 devnull if(f->nlines > f->maxlines)
185 b5990708 2003-09-30 devnull chopframe(f, ppt1, p0, nn0);
186 b5990708 2003-09-30 devnull if(pt1.y < y){
187 b5990708 2003-09-30 devnull r = f->r;
188 b5990708 2003-09-30 devnull r.min.y = q1;
189 b5990708 2003-09-30 devnull r.max.y = y;
190 b5990708 2003-09-30 devnull if(q1 < y)
191 b5990708 2003-09-30 devnull draw(f->b, r, f->b, nil, Pt(f->r.min.x, q0));
192 b5990708 2003-09-30 devnull r.min = pt1;
193 b5990708 2003-09-30 devnull r.max.x = pt1.x+(f->r.max.x-pt0.x);
194 b5990708 2003-09-30 devnull r.max.y = q1;
195 b5990708 2003-09-30 devnull draw(f->b, r, f->b, nil, pt0);
199 b5990708 2003-09-30 devnull * Move the old stuff down to make room. The loop will move the stuff
200 b5990708 2003-09-30 devnull * between the insertion and the point where the x's lined up.
201 b5990708 2003-09-30 devnull * The draw()s above moved everything down after the point they lined up.
203 b5990708 2003-09-30 devnull for((y=pt1.y==f->r.max.y?pt1.y:0),b = &f->box[n0-1]; --npts>=0; --b){
204 b5990708 2003-09-30 devnull pt = pts[npts].pt1;
205 b5990708 2003-09-30 devnull if(b->nrune > 0){
206 b5990708 2003-09-30 devnull r.min = pt;
207 b5990708 2003-09-30 devnull r.max = r.min;
208 b5990708 2003-09-30 devnull r.max.x += b->wid;
209 b5990708 2003-09-30 devnull r.max.y += f->font->height;
210 b5990708 2003-09-30 devnull draw(f->b, r, f->b, nil, pts[npts].pt0);
211 b5990708 2003-09-30 devnull /* clear bit hanging off right */
212 b5990708 2003-09-30 devnull if(npts==0 && pt.y>pt0.y){
214 b5990708 2003-09-30 devnull * first new char is bigger than first char we're
215 b5990708 2003-09-30 devnull * displacing, causing line wrap. ugly special case.
217 b5990708 2003-09-30 devnull r.min = opt0;
218 b5990708 2003-09-30 devnull r.max = opt0;
219 b5990708 2003-09-30 devnull r.max.x = f->r.max.x;
220 b5990708 2003-09-30 devnull r.max.y += f->font->height;
221 b5990708 2003-09-30 devnull if(f->p0<=cn0 && cn0<f->p1) /* b+1 is inside selection */
222 b5990708 2003-09-30 devnull col = f->cols[HIGH];
224 b5990708 2003-09-30 devnull col = f->cols[BACK];
225 b5990708 2003-09-30 devnull draw(f->b, r, col, nil, r.min);
226 b5990708 2003-09-30 devnull }else if(pt.y < y){
227 b5990708 2003-09-30 devnull r.min = pt;
228 b5990708 2003-09-30 devnull r.max = pt;
229 b5990708 2003-09-30 devnull r.min.x += b->wid;
230 b5990708 2003-09-30 devnull r.max.x = f->r.max.x;
231 b5990708 2003-09-30 devnull r.max.y += f->font->height;
232 b5990708 2003-09-30 devnull if(f->p0<=cn0 && cn0<f->p1) /* b+1 is inside selection */
233 b5990708 2003-09-30 devnull col = f->cols[HIGH];
235 b5990708 2003-09-30 devnull col = f->cols[BACK];
236 b5990708 2003-09-30 devnull draw(f->b, r, col, nil, r.min);
238 b5990708 2003-09-30 devnull y = pt.y;
239 b5990708 2003-09-30 devnull cn0 -= b->nrune;
241 b5990708 2003-09-30 devnull r.min = pt;
242 b5990708 2003-09-30 devnull r.max = pt;
243 b5990708 2003-09-30 devnull r.max.x += b->wid;
244 b5990708 2003-09-30 devnull r.max.y += f->font->height;
245 b5990708 2003-09-30 devnull if(r.max.x >= f->r.max.x)
246 b5990708 2003-09-30 devnull r.max.x = f->r.max.x;
248 c3feb5c5 2012-10-16 rsc if(f->p0<=cn0 && cn0<f->p1){ /* b is inside selection */
249 b5990708 2003-09-30 devnull col = f->cols[HIGH];
250 c3feb5c5 2012-10-16 rsc tcol = f->cols[HTEXT];
252 b5990708 2003-09-30 devnull col = f->cols[BACK];
253 c3feb5c5 2012-10-16 rsc tcol = f->cols[TEXT];
255 b5990708 2003-09-30 devnull draw(f->b, r, col, nil, r.min);
257 b5990708 2003-09-30 devnull if(pt.x == f->r.min.x)
258 b5990708 2003-09-30 devnull y = pt.y;
261 b5990708 2003-09-30 devnull /* insertion can extend the selection, so the condition here is different */
262 c3feb5c5 2012-10-16 rsc if(f->p0<p0 && p0<=f->p1){
263 b5990708 2003-09-30 devnull col = f->cols[HIGH];
264 c3feb5c5 2012-10-16 rsc tcol = f->cols[HTEXT];
266 b5990708 2003-09-30 devnull col = f->cols[BACK];
267 c3feb5c5 2012-10-16 rsc tcol = f->cols[TEXT];
269 b5990708 2003-09-30 devnull frselectpaint(f, ppt0, ppt1, col);
270 c3feb5c5 2012-10-16 rsc _frdrawtext(&frame, ppt0, tcol, col);
271 b5990708 2003-09-30 devnull _fraddbox(f, nn0, frame.nbox);
272 b5990708 2003-09-30 devnull for(n=0; n<frame.nbox; n++)
273 b5990708 2003-09-30 devnull f->box[nn0+n] = frame.box[n];
274 b5990708 2003-09-30 devnull if(nn0>0 && f->box[nn0-1].nrune>=0 && ppt0.x-f->box[nn0-1].wid>=f->r.min.x){
276 b5990708 2003-09-30 devnull ppt0.x -= f->box[nn0].wid;
278 b5990708 2003-09-30 devnull n0 += frame.nbox;
279 b5990708 2003-09-30 devnull _frclean(f, ppt0, nn0, n0<f->nbox-1? n0+1 : n0);
280 b5990708 2003-09-30 devnull f->nchars += frame.nchars;
281 b5990708 2003-09-30 devnull if(f->p0 >= p0)
282 b5990708 2003-09-30 devnull f->p0 += frame.nchars;
283 b5990708 2003-09-30 devnull if(f->p0 > f->nchars)
284 b5990708 2003-09-30 devnull f->p0 = f->nchars;
285 b5990708 2003-09-30 devnull if(f->p1 >= p0)
286 b5990708 2003-09-30 devnull f->p1 += frame.nchars;
287 b5990708 2003-09-30 devnull if(f->p1 > f->nchars)
288 b5990708 2003-09-30 devnull f->p1 = f->nchars;
289 b5990708 2003-09-30 devnull if(f->p0 == f->p1)
290 b5990708 2003-09-30 devnull frtick(f, frptofchar(f, f->p0), 1);
