/*
 * Copyright (c) 2010-2011 OTClient <https://github.com/edubart/otclient>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

#include "uiverticallayout.h"
#include "uiwidget.h"

UIVerticalLayout::UIVerticalLayout(UIWidgetPtr parentWidget)
    : UILayout(parentWidget)
{
}

void UIVerticalLayout::update()
{
    UIWidgetPtr parentWidget = getParentWidget();
    UIWidgetList widgets = parentWidget->getChildren();

    // sort by Y center
    std::sort(widgets.begin(), widgets.end(),
    [](const UIWidgetPtr& first, const UIWidgetPtr& second) -> bool {
        return first->getRect().center().y < second->getRect().center().y;
    });

    Point pos = parentWidget->getPosition();
    for(const UIWidgetPtr& widget : widgets) {
        Size size = widget->getSize();
        pos.y += widget->getMarginTop();
        if(widget->isSizeFixed()) {
            pos.x = parentWidget->getX() + (parentWidget->getWidth() - (widget->getMarginLeft() + widget->getWidth() + widget->getMarginRight()))/2;
            pos.x = std::max(pos.x, parentWidget->getX());
        } else {
            size.setWidth(parentWidget->getWidth() - (widget->getMarginLeft() + widget->getMarginRight()));
            pos.x = std::max(pos.x, parentWidget->getX() + (parentWidget->getWidth() - size.width())/2);
        }
        widget->setRect(Rect(pos, size));
        pos.y += widget->getHeight() + widget->getMarginBottom();
    }
}

void UIVerticalLayout::addWidget(const UIWidgetPtr& widget)
{
    update();
}

void UIVerticalLayout::removeWidget(const UIWidgetPtr& widget)
{
    update();
}