/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

#include "common/textconsole.h"

#include "gui/object.h"
#include "gui/widget.h"
#include "gui/gui-manager.h"
#include "gui/ThemeEval.h"

namespace GUI {

#define SCALEVALUE(val) (val > 0 ? val * g_gui.getScaleFactor() : val)

GuiObject::GuiObject(int x, int y, int w, int h) : _useRTL(true), _firstWidget(nullptr) {
	_x = x;
	_y = y;
	_w = w;
	_h = h;
}

GuiObject::GuiObject(const Common::String &name)
	: _x(-1000), _y(-1000), _w(0), _h(0), _useRTL(true), _name(name), _firstWidget(nullptr) {
}

GuiObject::~GuiObject() {
	delete _firstWidget;
	_firstWidget = nullptr;
}

void GuiObject::resize(int x, int y, int w, int h, bool scale) {
	if (scale) {
		_x = SCALEVALUE(x);
		_y = SCALEVALUE(y);
		_w = SCALEVALUE(w);
		_h = SCALEVALUE(h);
	} else {
		_x = x; _y = y;
		_w = w; _h = h;
	}
}

Widget *GuiObject::addChild(Widget *newChild) {
	Widget *oldFirstWidget = _firstWidget;
	_firstWidget = newChild;
	return oldFirstWidget;
}

void GuiObject::reflowLayout() {
	if (!_name.empty()) {
		int16 w, h;
		bool useRTL = true;
		if (!g_gui.xmlEval()->getWidgetData(_name, _x, _y, w, h, useRTL) || w == -1 || h == -1) {
			error("Unable to load widget position for '%s'. Please check your theme files for theme '%s'", _name.c_str(), g_gui.theme()->getThemeId().c_str());
		}

		_w = w;
		_h = h;
		_useRTL = useRTL;
	}
}

void GuiObject::removeWidget(Widget *del) {
	if (del == _firstWidget) {
		Widget *del_next = del->next();
		del->setNext(nullptr);
		_firstWidget = del_next;
		return;
	}

	Widget *w = _firstWidget;
	while (w) {
		if (w->next() == del) {
			Widget *del_next = del->next();
			del->setNext(nullptr);
			w->setNext(del_next);
			return;
		}
		w = w->next();
	}
}

Common::Rect GuiObject::getClipRect() const {
	return Common::Rect(getAbsX(), getAbsY(), getAbsX() + getWidth(), getAbsY() + getHeight());
}

} // End of namespace GUI