#include <QtGui>
#include "pictextitem.h"
#include "picscene.h"
#include "moveinput.h"

extern MoveInput* moveInput;
PicTextItem::PicTextItem(QGraphicsItem *parent, QGraphicsScene *scene) :
    QGraphicsTextItem(parent)//edit@02-07
{
    setFlag(QGraphicsItem::ItemIsMovable);
    setFlag(QGraphicsItem::ItemIsSelectable);
    setFlag(QGraphicsItem::ItemIsFocusable);
    QFont font;
    font.setFamily("wenquanyi");
    font.setPixelSize(12);
    document()->setDefaultStyleSheet("p { margin: 0; }");
    document()->setDocumentMargin(0);
    SpecialConditions = false;
    CatchCnt1CurrValue = -1;
    CatchCnt1StartValue = -1;

    // 插入的变量贴底部，防止错位,修复打开文件时变量图片的垂直对齐
    document()->setDefaultStyleSheet("img { vertical-align: bottom; }");
}
//! [1]
QVariant PicTextItem::itemChange(GraphicsItemChange change,
                     const QVariant &value)
{
    if (change == ItemSceneChange && scene()) {
        QPointF newPos = value.toPoint();
        QRectF rect = scene()->sceneRect();
        if (!rect.contains(newPos)) {
            newPos.setX(qMin(rect.right(), qMax(newPos.x(), rect.left())));
            newPos.setY(qMin(rect.bottom(), qMax(newPos.y(), rect.top())));
        }
    }
    return QGraphicsItem::itemChange(change, value);
}
//! [1]

//! [2]
void PicTextItem::focusOutEvent(QFocusEvent *event)
{
    moveInput->hide();
    emit lostFocus(this);
    QGraphicsTextItem::focusOutEvent(event);
    //
}
//! [2]

//! [5]
void PicTextItem::mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event)
{
    //if (textInteractionFlags() == Qt::NoTextInteraction)
       // setTextInteractionFlags(Qt::TextEditorInteraction);
        //setTextInteractionFlags(Qt::TextBrowserInteraction);
    QGraphicsTextItem::mouseDoubleClickEvent(event);
    //emit itemEdit(toHtml());
}
//! [5]

//限制图元拖动范围
void PicTextItem::mouseReleaseEvent ( QGraphicsSceneMouseEvent * event )
{
    //edit@12-07
    QPointF newPos = this->pos();
    this->setPos(qCeil(newPos.x()),qCeil(newPos.y()));

    if(scene())
        scene()->update();
        
    QGraphicsTextItem::mouseReleaseEvent(event);
}

void PicTextItem::keyPressEvent(QKeyEvent *event)
{
    foreach (QGraphicsItem *item, scene()->selectedItems()) {
        if(event->key() == Qt::Key_Left)
        {
            item->moveBy(-1, 0);
        }
        else if(event->key() == Qt::Key_Right)
        {
            item->moveBy(1, 0);
        }
        else if(event->key() == Qt::Key_Up)
        {
            item->moveBy(0, -1);
        }
        else if(event->key() == Qt::Key_Down)
        {
           item->moveBy(0, 1);
        }
    }
    if(!scene()->selectedItems().empty())
    {
        scene()->update();
    }
    QGraphicsTextItem::keyPressEvent(event);
}