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- /*
- * This file is part of the UCB release of Plan 9. It is subject to the license
- * terms in the LICENSE file found in the top-level directory of this
- * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
- * part of the UCB release of Plan 9, including this file, may be copied,
- * modified, propagated, or distributed except according to the terms contained
- * in the LICENSE file.
- */
- #include <u.h>
- #include <libc.h>
- #include <draw.h>
- #include <thread.h>
- #include <mouse.h>
- #include <keyboard.h>
- #include <control.h>
- typedef struct Label Label;
- struct Label
- {
- Control;
- int border;
- CFont *font;
- CImage *image;
- CImage *textcolor;
- CImage *bordercolor;
- char *text;
- int align;
- };
- enum{
- EAlign,
- EBorder,
- EBordercolor,
- EFocus,
- EFont,
- EHide,
- EImage,
- ERect,
- EReveal,
- EShow,
- ESize,
- ETextcolor,
- EValue,
- };
- static char *cmds[] = {
- [EAlign] = "align",
- [EBorder] = "border",
- [EBordercolor] = "bordercolor",
- [EFocus] = "focus",
- [EFont] = "font",
- [EHide] = "hide",
- [EImage] = "image",
- [ERect] = "rect",
- [EReveal] = "reveal",
- [EShow] = "show",
- [ESize] = "size",
- [ETextcolor] = "textcolor",
- [EValue] = "value",
- nil
- };
- static void labelshow(Label*);
- static void
- labelfree(Control *c)
- {
- Label *l;
- l = (Label*)c;
- _putctlfont(l->font);
- _putctlimage(l->image);
- _putctlimage(l->textcolor);
- _putctlimage(l->bordercolor);
- }
- static void
- labelshow(Label *l)
- {
- Rectangle r;
- Point p;
- if (l->hidden)
- return;
- r = l->rect;
- draw(l->screen, r, l->image->image, nil, l->image->image->r.min);
- if(l->border > 0){
- border(l->screen, r, l->border, l->bordercolor->image, l->bordercolor->image->r.min);
- r = insetrect(r, l->border);
- }
- p = _ctlalignpoint(r,
- stringwidth(l->font->font, l->text),
- l->font->font->height, l->align);
- _string(l->screen, p, l->textcolor->image,
- ZP, l->font->font, l->text, nil, strlen(l->text),
- r, nil, ZP, SoverD);
- flushimage(display, 1);
- }
- static void
- labelctl(Control *c, CParse *cp)
- {
- int cmd;
- Rectangle r;
- Label *l;
- l = (Label*)c;
- cmd = _ctllookup(cp->args[0], cmds, nelem(cmds));
- switch(cmd){
- default:
- ctlerror("%q: unrecognized message '%s'", l->name, cp->str);
- break;
- case EAlign:
- _ctlargcount(l, cp, 2);
- l->align = _ctlalignment(cp->args[1]);
- break;
- case EBorder:
- _ctlargcount(l, cp, 2);
- if(cp->iargs[1] < 0)
- ctlerror("%q: bad border: %c", l->name, cp->str);
- l->border = cp->iargs[1];
- break;
- case EBordercolor:
- _ctlargcount(l, cp, 2);
- _setctlimage(l, &l->bordercolor, cp->args[1]);
- break;
- case EFocus:
- /* ignore focus change */
- break;
- case EFont:
- _ctlargcount(l, cp, 2);
- _setctlfont(l, &l->font, cp->args[1]);
- break;
- case EHide:
- _ctlargcount(l, cp, 1);
- l->hidden = 1;
- break;
- case EImage:
- _ctlargcount(l, cp, 2);
- _setctlimage(l, &l->image, cp->args[1]);
- break;
- case ERect:
- _ctlargcount(l, 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", l->name, cp->str);
- l->rect = r;
- break;
- case EReveal:
- _ctlargcount(l, cp, 1);
- l->hidden = 0;
- labelshow(l);
- break;
- case EShow:
- _ctlargcount(l, cp, 1);
- labelshow(l);
- /*
- _ctlargcount(l, cp, 2);
- _setctlimage(l, &l->textcolor, cp->args[1]);
- */
- break;
- case ESize:
- if (cp->nargs == 3)
- r.max = Pt(0x7fffffff, 0x7fffffff);
- else{
- _ctlargcount(l, 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", l->name, cp->str);
- l->size.min = r.min;
- l->size.max = r.max;
- break;
- case ETextcolor:
- _ctlargcount(l, cp, 2);
- _setctlimage(l, &l->textcolor, cp->args[1]);
- break;
- case EValue:
- _ctlargcount(l, cp, 2);
- if(strcmp(cp->args[1], l->text) != 0){
- free(l->text);
- l->text = ctlstrdup(cp->args[1]);
- labelshow(l);
- }
- break;
- }
- }
- Control*
- createlabel(Controlset *cs, char *name)
- {
- Label *l;
- l = (Label*)_createctl(cs, "label", sizeof(Label), name);
- l->text = ctlstrdup("");
- l->image = _getctlimage("white");
- l->textcolor = _getctlimage("black");
- l->bordercolor = _getctlimage("black");
- l->font = _getctlfont("font");
- l->border = 0;
- l->ctl = labelctl;
- l->exit = labelfree;
- return (Control *)l;
- }
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