ref: 2153eb179c21589a991625acba967c69aad1e5d9
dir: /sys/src/libcontrol/textbutton.c/
#include <u.h>
#include <libc.h>
#include <draw.h>
#include <thread.h>
#include <mouse.h>
#include <keyboard.h>
#include <control.h>
typedef struct Textbutton Textbutton;
struct Textbutton
{
Control;
CFont *font;
CImage *image;
CImage *mask;
CImage *light;
CImage *bordercolor;
CImage *textcolor;
CImage *pressedtextcolor;
CImage *paletextcolor;
int pressed;
int lastbut;
int lastshow;
char **line;
int nline;
int align;
int border;
int off;
int showoff;
int prepress;
};
enum{
EAlign,
EBorder,
EBordercolor,
EFocus,
EFont,
EFormat,
EHide,
EImage,
ELight,
EMask,
EPaletextcolor,
EPressedtextcolor,
ERect,
EReveal,
EShow,
ESize,
EText,
ETextcolor,
EValue,
};
static char *cmds[] = {
[EAlign] = "align",
[EBorder] = "border",
[EBordercolor] = "bordercolor",
[EFocus] = "focus",
[EFont] = "font",
[EFormat] = "format",
[EHide] = "hide",
[EImage] = "image",
[ELight] = "light",
[EMask] = "mask",
[EPaletextcolor] ="paletextcolor",
[EPressedtextcolor] ="pressedtextcolor",
[ERect] = "rect",
[EReveal] = "reveal",
[EShow] = "show",
[ESize] = "size",
[EText] = "text",
[ETextcolor] = "textcolor",
[EValue] = "value",
nil
};
static void textbuttonshow(Textbutton*);
static void
textbuttonmouse(Control *c, Mouse *m)
{
Textbutton *t;
t = (Textbutton *)c;
if(m->buttons&7) {
if (ptinrect(m->xy,t->rect)) {
if (t->off) {
t->off = 0;
textbuttonshow(t);
}
} else {
if (!t->off) {
t->off = 1;
textbuttonshow(t);
}
}
}
if((m->buttons&7) != t->lastbut){
if(m->buttons & 7){
t->prepress = t->pressed;
if (t->pressed)
t->pressed = 0;
else
t->pressed = 1;
textbuttonshow(t);
}else{ /* generate event on button up */
if (ptinrect(m->xy,t->rect))
chanprint(t->event, t->format, t->name, t->pressed);
else {
t->off = 0;
t->pressed = t->prepress;
textbuttonshow(t);
}
}
}
t->lastbut = m->buttons & 7;
}
static void
textbuttonfree(Control *c)
{
int i;
Textbutton *t;
t = (Textbutton*)c;
_putctlfont(t->font);
_putctlimage(t->image);
_putctlimage(t->light);
_putctlimage(t->mask);
_putctlimage(t->textcolor);
_putctlimage(t->bordercolor);
_putctlimage(t->paletextcolor);
_putctlimage(t->pressedtextcolor);
for(i=0; i<t->nline; i++)
free(t->line[i]);
free(t->line);
}
static void
textbuttonshow(Textbutton *t)
{
Rectangle r, clipr;
int i, dx, dy, w;
Font *f;
Point p, q;
Image *im;
if(t->hidden || (t->lastshow == t->pressed && t->showoff == t->off))
return;
f = t->font->font;
draw(t->screen, t->rect, t->image->image, nil, t->image->image->r.min);
if(t->border > 0)
border(t->screen, t->rect, t->border, t->bordercolor->image, ZP);
/* text goes here */
dx = 0;
for(i=0; i<t->nline; i++){
w = stringwidth(f, t->line[i]);
if(dx < w)
dx = w;
}
dy = t->nline*f->height;
clipr = insetrect(t->rect, t->border);
p = _ctlalignpoint(clipr, dx, dy, t->align);
im = t->textcolor->image;
if(t->off)
im = t->paletextcolor->image;
else if(t->pressed)
im = t->pressedtextcolor->image;
for(i=0; i<t->nline; i++){
r.min = p;
r.max.x = p.x+dx;
r.max.y = p.y+f->height;
q = _ctlalignpoint(r, stringwidth(f, t->line[i]), f->height, t->align%3);
_string(t->screen, q, im,
ZP, f, t->line[i], nil, strlen(t->line[i]),
clipr, nil, ZP, SoverD);
p.y += f->height;
}
if(t->off || t->pressed)
draw(t->screen, t->rect, t->light->image, t->mask->image, t->mask->image->r.min);
t->lastshow = t->pressed;
t->showoff = t->off;
flushimage(display, 1);
}
static void
textbuttonctl(Control *c, CParse *cp)
{
int cmd, i;
Rectangle r;
Textbutton *t;
t = (Textbutton*)c;
cmd = _ctllookup(cp->args[0], cmds, nelem(cmds));
switch(cmd){
default:
ctlerror("%q: unrecognized message '%s'", t->name, cp->str);
break;
case EAlign:
_ctlargcount(t, cp, 2);
t->align = _ctlalignment(cp->args[1]);
t->lastshow = -1; /* force redraw */
break;
case EBorder:
_ctlargcount(t, cp, 2);
t->border = cp->iargs[1];
t->lastshow = -1; /* force redraw */
break;
case EBordercolor:
_ctlargcount(t, cp, 2);
_setctlimage(t, &t->bordercolor, cp->args[1]);
t->lastshow = -1; /* force redraw */
break;
case EFocus:
break;
case EFont:
_ctlargcount(t, cp, 2);
_setctlfont(t, &t->font, cp->args[1]);
t->lastshow = -1; /* force redraw */
break;
case EFormat:
_ctlargcount(t, cp, 2);
t->format = ctlstrdup(cp->args[1]);
break;
case EHide:
_ctlargcount(t, cp, 1);
t->hidden = 1;
break;
case EImage:
_ctlargcount(t, cp, 2);
_setctlimage(t, &t->image, cp->args[1]);
t->lastshow = -1; /* force redraw */
break;
case ELight:
_ctlargcount(t, cp, 2);
_setctlimage(t, &t->light, cp->args[1]);
t->lastshow = -1; /* force redraw */
break;
case EMask:
_ctlargcount(t, cp, 2);
_setctlimage(t, &t->mask, cp->args[1]);
t->lastshow = -1; /* force redraw */
break;
case EPaletextcolor:
_ctlargcount(t, cp, 2);
_setctlimage(t, &t->paletextcolor, cp->args[1]);
t->lastshow = -1; /* force redraw */
break;
case EPressedtextcolor:
_ctlargcount(t, cp, 2);
_setctlimage(t, &t->pressedtextcolor, cp->args[1]);
t->lastshow = -1; /* force redraw */
break;
case ERect:
_ctlargcount(t, cp, 5);
r.min.x = cp->iargs[1];
r.min.y = cp->iargs[2];
r.max.x = cp->iargs[3];
r.max.y = cp->iargs[4];
if(Dx(r)<=0 || Dy(r)<=0)
ctlerror("%q: bad rectangle: %s", t->name, cp->str);
t->rect = r;
t->lastshow = -1; /* force redraw */
break;
case EReveal:
_ctlargcount(t, cp, 1);
t->hidden = 0;
t->lastshow = -1; /* force redraw */
textbuttonshow(t);
break;
case EShow:
_ctlargcount(t, cp, 1);
t->lastshow = -1; /* force redraw */
textbuttonshow(t);
break;
case ESize:
if (cp->nargs == 3)
r.max = Pt(0x7fffffff, 0x7fffffff);
else{
_ctlargcount(t, cp, 5);
r.max.x = cp->iargs[3];
r.max.y = cp->iargs[4];
}
r.min.x = cp->iargs[1];
r.min.y = cp->iargs[2];
if(r.min.x<=0 || r.min.y<=0 || r.max.x<=0 || r.max.y<=0 || r.max.x < r.min.x || r.max.y < r.min.y)
ctlerror("%q: bad sizes: %s", t->name, cp->str);
t->size.min = r.min;
t->size.max = r.max;
break;
case EText:
/* free existing text */
for(i=0; i<t->nline; i++)
free(t->line[i]);
t->nline = cp->nargs-1;
t->line = ctlrealloc(t->line, t->nline*sizeof(char*));
for(i=0; i<t->nline; i++)
t->line[i] = ctlstrdup(cp->args[i+1]);
t->lastshow = -1; /* force redraw */
textbuttonshow(t);
break;
case ETextcolor:
_ctlargcount(t, cp, 2);
_setctlimage(t, &t->textcolor, cp->args[1]);
t->lastshow = -1; /* force redraw */
break;
case EValue:
_ctlargcount(t, cp, 2);
if((cp->iargs[1]!=0) != t->pressed){
t->pressed ^= 1;
textbuttonshow(t);
}
break;
}
}
Control*
createtextbutton(Controlset *cs, char *name)
{
Textbutton *t;
t = (Textbutton *)_createctl(cs, "textbutton", sizeof(Textbutton), name);
t->line = ctlmalloc(sizeof(char*));
t->nline = 0;
t->image = _getctlimage("white");
t->light = _getctlimage("yellow");
t->mask = _getctlimage("opaque");
t->bordercolor = _getctlimage("black");
t->textcolor = _getctlimage("black");
t->pressedtextcolor = _getctlimage("black");
t->paletextcolor = _getctlimage("paleyellow");
t->font = _getctlfont("font");
t->format = ctlstrdup("%q: value %d");
t->lastshow = -1;
t->mouse = textbuttonmouse;
t->ctl = textbuttonctl;
t->exit = textbuttonfree;
t->prepress = 0;
t->off = 0;
t->showoff = -1;
return (Control *)t;
}