/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
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** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
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****************************************************************************/

#include "tagtextitem.h"

#include <QGraphicsScene>
#include <QGraphicsSceneHoverEvent>
#include <QLabel>
#include <QPainter>

using namespace ScxmlEditor::PluginInterface;

TagTextItem::TagTextItem(QGraphicsItem *parent)
    : QGraphicsObject(parent)
{
    setFlag(ItemIsMovable, true);
    setFlag(ItemIsFocusable, true);
    setFlag(ItemIsSelectable, true);
    m_textItem = new TextItem(this);
    connect(m_textItem, &TextItem::textChanged, this, [=](){
        emit textChanged();
    });
    connect(m_textItem, &TextItem::textReady, this, [=](const QString &text){
        emit textReady(text);
    });
    connect(m_textItem, &TextItem::selected, this, [=](bool sel){
        emit selected(sel);
    });
    setAcceptHoverEvents(true);
}

QRectF TagTextItem::boundingRect() const
{
    return m_textItem->boundingRect().adjusted(-8, -8, 8, 8);
}

void TagTextItem::setText(const QString &text)
{
    m_textItem->setText(text);
}

void TagTextItem::setDefaultTextColor(const QColor &col)
{
    m_textItem->setDefaultTextColor(col);
}

bool TagTextItem::needIgnore(const QPointF sPos)
{
    // If we found QuickTransition-item or CornerGrabber at this point, we must ignore mouse press here
    // So we can press QuickTransition/CornerGrabber item although there is transition lines front of these items
    foreach (QGraphicsItem *item, scene()->items(sPos)) {
        if (item->type() == QuickTransitionType || (item->type() == CornerGrabberType && item->parentItem() != this))
            return true;
    }

    return false;
}

void TagTextItem::hoverEnterEvent(QGraphicsSceneHoverEvent *e)
{
    if (needIgnore(e->scenePos())) {
        e->ignore();
        return;
    }

    setCursor(Qt::SizeAllCursor);
    QGraphicsObject::hoverEnterEvent(e);
}

void TagTextItem::hoverMoveEvent(QGraphicsSceneHoverEvent *e)
{
    if (needIgnore(e->scenePos())) {
        setCursor(Qt::ArrowCursor);
        e->ignore();
        return;
    }

    setCursor(Qt::SizeAllCursor);
    QGraphicsObject::hoverEnterEvent(e);
}

void TagTextItem::hoverLeaveEvent(QGraphicsSceneHoverEvent *e)
{
    setCursor(Qt::ArrowCursor);
    QGraphicsObject::hoverLeaveEvent(e);
}

void TagTextItem::mousePressEvent(QGraphicsSceneMouseEvent *e)
{
    if (needIgnore(e->scenePos())) {
        e->ignore();
        return;
    }

    m_startPos = pos();
    QGraphicsObject::mousePressEvent(e);
}

void TagTextItem::mouseReleaseEvent(QGraphicsSceneMouseEvent *e)
{
    m_movePoint += (pos() - m_startPos);
    emit movePointChanged();
    QGraphicsObject::mouseReleaseEvent(e);
}

void TagTextItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
{
    Q_UNUSED(painter)
    Q_UNUSED(option)
    Q_UNUSED(widget)
}

void TagTextItem::resetMovePoint(const QPointF &point)
{
    m_movePoint = point;
}

QPointF TagTextItem::movePoint() const
{
    return m_movePoint;
}