#include <SDL.h>
#include <Input.h>
#include "font.h"
#include "widgets.h"
#include "engine.h"

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "gettext.h"

mogltk::widget * mogltk::widget::focused = 0;

mogltk::widget::widget(widget * _father, int _x, int _y, int _sx, int _sy, int _type, String _name, mogltk::shape * _sh) :
    x(_x), y(_y), sx(_sx), sy(_sy), father(_father), type(_type), name(_name), sh(_sh) {

    if (!father) {
	root = this;
	father = this;
	next = 0;
	x = 0;
	y = 0;
	sx = engine::base_o->GetWidth();
	sy = engine::base_o->GetHeight();
    } else {
	next = father->child;
	if (next)
	    next->prev = this;
	father->child = this;
	root = father->root;
    }
    prev = 0;
    child = 0;

    computeabs();
}

mogltk::widget::~widget() {
    while(child)
	delete child;
    
    if (prev)
	prev->next = next;
    else
	father->child = next;

    if (next)
	next->prev = prev;
}

void mogltk::widget::computeabs() {
    if (father != this) {
	ax = father->ax + x;
	ay = father->ay + y;
    } else {
	ax = x;
	ay = y;
    }
    ax2 = ax + sx;
    ay2 = ay + sy;
}

void mogltk::widget::move(int nx, int ny) {
    x = nx;
    y = ny;

    computeabs();
}

void mogltk::widget::resize(int nsx, int nsy) {
    sx = nsx;
    sy = nsy;

    ax2 = ax + sx;
    ay2 = ay + sy;
}

int mogltk::widget::GetX() {
    return x;
}

int mogltk::widget::GetY() {
    return y;
}

int mogltk::widget::GetH() {
    return sx;
}

int mogltk::widget::GetW() {
    return sy;
}

int mogltk::widget::GetAX() {
    return ax;
}

int mogltk::widget::GetAY() {
    return ay;
}

int mogltk::widget::GetAX2() {
    return ax2;
}

int mogltk::widget::GetAY2() {
    return ay2;
}

mogltk::shape * mogltk::widget::Shaper() {
    return sh;
}

void mogltk::widget::fulldraw() {
    bool was2D = true;
    
    if (mogltk::engine::glbase_o)
        if (!(was2D = mogltk::engine::glbase_o->is2D()))
	    mogltk::engine::glbase_o->Enter2DMode();

    texture::Unbind();
    mogltk::ColorP::Max = WHITE;
    mogltk::ColorP::Min = BLACK;
    mogltk::ColorP::Min.A = 0;

    root->idraw();

    if (!was2D)
	mogltk::engine::glbase_o->Leave2DMode();
}

void mogltk::widget::idraw() {
    int x1, y1, x2, y2;

    if (next)
	next->idraw();

    x1 = MAX(GetAX(), father->GetAX());
    y1 = MAX(GetAY(), father->GetAY());

    x2 = MIN(GetAX2(), father->GetAX2());
    y2 = MIN(GetAY2(), father->GetAY2());

    engine::base_o->changeviewport(x1, y1, x2 - x1, y2 - y1);

    draw();

    if (child)
	child->idraw();
}

/*
 *  Predefined widgets.
 */

/* Here is Root */

mogltk::Root::Root(mogltk::shape * sh, mogltk::drawer * _dr) : widget(0, 0, 0, 0, 0, 0, "Root", sh), dr(_dr) {
    if (engine::root)
	delete engine::root;
    engine::root = this;
}

void mogltk::Root::draw() {
    if (dr)
	dr->draw(this);
    else
	Shaper()->box(GetAX(), GetAY(), GetAX2(), GetAY2());
}

void mogltk::Root::setdrawer(drawer * _dr) {
    dr = _dr;
}