1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
|
/*
* Fonted text viewer, calls out to code in rtext.c
*
* Should redo this to copy the already-visible parts on scrolling & only
* update the newly appearing stuff -- then the offscreen assembly bitmap can go away.
*/
#include <u.h>
#include <libc.h>
#include <draw.h>
#include <event.h>
#include <panel.h>
#include "pldefs.h"
typedef struct Textview Textview;
struct Textview{
void (*hit)(Panel *, int, Rtext *); /* call back to user on hit */
Rtext *text; /* text */
int yoffs; /* offset of top of screen */
Rtext *hitword; /* text to hilite */
Rtext *hitfirst; /* first word in range select */
int twid; /* text width */
int thgt; /* text height */
Point minsize; /* smallest acceptible window size */
int buttons;
};
void pl_setscrpos(Panel *p, Textview *tp, Rectangle r){
Panel *sb;
int lo, hi;
lo=tp->yoffs;
hi=lo+r.max.y-r.min.y; /* wrong? */
sb=p->yscroller;
if(sb && sb->setscrollbar) sb->setscrollbar(sb, lo, hi, tp->thgt);
}
void pl_drawtextview(Panel *p){
int twid;
Rectangle r;
Textview *tp;
tp=p->data;
r=pl_outline(p->b, p->r, UP);
twid=r.max.x-r.min.x;
if(twid!=tp->twid){
tp->twid=twid;
tp->thgt=pl_rtfmt(tp->text, tp->twid);
p->scr.size.y=tp->thgt;
}
p->scr.pos.y=tp->yoffs;
pl_rtdraw(p->b, r, tp->text, tp->yoffs);
pl_setscrpos(p, tp, r);
}
/*
* If t is a panel word, pass the mouse event on to it
*/
void pl_passon(Rtext *t, Mouse *m){
if(t && t->b==0 && t->p!=0) plmouse(t->p, m);
}
int pl_hittextview(Panel *p, Mouse *m){
Rtext *oldhitword, *oldhitfirst;
int hitme, oldstate;
Point ul, size;
Textview *tp;
tp=p->data;
hitme=0;
oldstate=p->state;
oldhitword=tp->hitword;
oldhitfirst=tp->hitfirst;
if(oldhitword==oldhitfirst)
pl_passon(oldhitword, m);
if(m->buttons&OUT)
p->state=UP;
else if(m->buttons&7){
p->state=DOWN;
tp->buttons=m->buttons;
ul=p->r.min;
size=subpt(p->r.max, p->r.min);
pl_interior(p->state, &ul, &size);
tp->hitword=pl_rthit(tp->text, tp->yoffs, m->xy, ul);
if(tp->hitword==0)
if(oldhitword!=0 && oldstate==DOWN)
tp->hitword=oldhitword;
else
tp->hitfirst=0;
if(tp->hitword!=0 && oldstate!=DOWN)
tp->hitfirst=tp->hitword;
}
else{
if(p->state==DOWN) hitme=1;
p->state=UP;
}
if(tp->hitfirst!=oldhitfirst || tp->hitword!=oldhitword){
plrtseltext(tp->text, tp->hitword, tp->hitfirst);
pl_drawtextview(p);
if(tp->hitword==tp->hitfirst)
pl_passon(tp->hitword, m);
}
if(hitme && tp->hit && tp->hitword!=0 && tp->hitword==tp->hitfirst){
plrtseltext(tp->text, 0, 0);
pl_drawtextview(p);
tp->hit(p, tp->buttons, tp->hitword);
tp->hitword=0;
tp->hitfirst=0;
}
return 0;
}
void pl_scrolltextview(Panel *p, int dir, int buttons, int num, int den){
int yoffs;
Point ul, size;
Textview *tp;
Rectangle r;
if(dir!=VERT) return;
tp=p->data;
ul=p->r.min;
size=subpt(p->r.max, p->r.min);
pl_interior(p->state, &ul, &size);
switch(buttons){
default:
SET(yoffs);
break;
case 1: /* left -- top moves to pointer */
yoffs=(vlong)tp->yoffs-num*size.y/den;
if(yoffs<0) yoffs=0;
break;
case 2: /* middle -- absolute index of file */
yoffs=(vlong)tp->thgt*num/den;
break;
case 4: /* right -- line pointed at moves to top */
yoffs=tp->yoffs+(vlong)num*size.y/den;
if(yoffs>tp->thgt) yoffs=tp->thgt;
break;
}
if(yoffs!=tp->yoffs){
r=pl_outline(p->b, p->r, p->state);
pl_rtredraw(p->b, r, tp->text, yoffs, tp->yoffs);
p->scr.pos.y=tp->yoffs=yoffs;
pl_setscrpos(p, tp, r);
}
}
void pl_typetextview(Panel *g, Rune c){
USED(g, c);
}
Point pl_getsizetextview(Panel *p, Point children){
USED(children);
return pl_boxsize(((Textview *)p->data)->minsize, p->state);
}
void pl_childspacetextview(Panel *g, Point *ul, Point *size){
USED(g, ul, size);
}
/*
* Priority depends on what thing inside the panel we're pointing at.
*/
int pl_pritextview(Panel *p, Point xy){
Point ul, size;
Textview *tp;
Rtext *h;
tp=p->data;
ul=p->r.min;
size=subpt(p->r.max, p->r.min);
pl_interior(p->state, &ul, &size);
h=pl_rthit(tp->text, tp->yoffs, xy, ul);
if(h && h->b==0 && h->p!=0){
p=pl_ptinpanel(xy, h->p);
if(p) return p->pri(p, xy);
}
return PRI_NORMAL;
}
void plinittextview(Panel *v, int flags, Point minsize, Rtext *t, void (*hit)(Panel *, int, Rtext *)){
Textview *tp;
tp=v->data;
v->flags=flags|LEAF;
v->state=UP;
v->draw=pl_drawtextview;
v->hit=pl_hittextview;
v->type=pl_typetextview;
v->getsize=pl_getsizetextview;
v->childspace=pl_childspacetextview;
v->kind="textview";
v->pri=pl_pritextview;
tp->hit=hit;
tp->minsize=minsize;
tp->text=t;
tp->yoffs=0;
tp->hitfirst=0;
tp->hitword=0;
v->scroll=pl_scrolltextview;
tp->twid=-1;
v->scr.pos=Pt(0,0);
v->scr.size=Pt(0,1);
}
Panel *pltextview(Panel *parent, int flags, Point minsize, Rtext *t, void (*hit)(Panel *, int, Rtext *)){
Panel *v;
v=pl_newpanel(parent, sizeof(Textview));
plinittextview(v, flags, minsize, t, hit);
return v;
}
int plgetpostextview(Panel *p){
return ((Textview *)p->data)->yoffs;
}
void plsetpostextview(Panel *p, int yoffs){
((Textview *)p->data)->yoffs=yoffs;
pldraw(p, p->b);
}
char* plsnarftext(Panel *p){
static char *b = nil;
free(b);
b = plrtsnarftext(((Textview *)p->data)->text);
return b;
}
|
