shithub: libnate

ref: 1890aeca379976e46deabb0ce844aefc8be1a2c5
dir: /n_vbox.c/

#include <u.h>
#include <libc.h>
#include <draw.h>
#include <event.h>
#include "nate_construct.h"
#include "n_vbox.h"

#define N_TYPE NVBox_Type
char* NVBox_Type = "NVBox";

typedef struct csizep csizep;
struct csizep {
	Rectangle crect;
	Rectangle frect;
	Image *screen;
};

static void
vbox_childsize(Nelem* nelem, int, void *aux)
{
	csizep *p = (csizep*)aux;
	Rectangle r = ncallcalcsize(nelem, p->screen, p->crect);
	combinerect(&p->frect, r);
	p->crect.min.y = r.max.y;
}

static Rectangle
vbox_calcsize(Nelem* nelem, Image* img, Rectangle r)
{
	csizep params;
	NVBox* b = (NVBox*)nelem;
	GUARD(b);
	
	params.crect = r;
	params.screen = img;
	params.frect.min = r.min;
	params.frect.max.x = b->autowidth ? r.min.x : r.max.x;
	params.frect.max.y = r.min.y;
	
	lforeach(&b->children, vbox_childsize, &params);
	
	b->r = params.frect;
	return b->r;
}

static void
vbox_childdraw(Nelem* elem, int, void *aux)
{
	ncalldraw(elem, (Image*)aux);
}

static void
vbox_draw(Nelem* nelem, Image* img)
{
	NVBox* b = (NVBox*)nelem;
	GUARD(b);
	
	lforeach(&b->children, vbox_childdraw, img);
}

static Nelemfunctions Nvboxfunctions = {
	.calcsize = vbox_calcsize,
	.draw = vbox_draw,
};

DEF_SLOTFUNC(NVBox, vbox_slot);

DEF_ACCESSOR_OneParam(NVBox, vbox_autowidth, int, autowidth);

NVBox*
New_VBox(char *name)
{
	NVBox *b = MakeNelem(NVBox, NVBox_Type, &Nvboxfunctions, name, -1);
	
	b->Slot = vbox_slot;
	b->AutoWidth = vbox_autowidth;
	
	linit(&b->children);
	b->autowidth = 0;
	nc_push(b);
	return b;
}