/**
 * @file ModelProgressGraphicsItem.cpp
 * @brief 日志中进度条
 */
#include "ModelProgressGraphicsItem.h"
#include <QPen>
#include <QPainter>
#include <QDebug>
#include <QLinearGradient>
#include <QLabel>

// 设置显示条宽度
int const BARWIDTH = 14;

using namespace pai::gui;

ModelProgressGraphicsItem::ModelProgressGraphicsItem(int barType, int stepID,QGraphicsItem * pParent)
:QGraphicsItem(pParent)
{
    m_width  = 60;
    m_height = 20;
    m_BarType = barType;
    m_StepID = stepID;
}

ModelProgressGraphicsItem::~ModelProgressGraphicsItem()
{
}

int ModelProgressGraphicsItem::type() const
{
    return Type;
}

void ModelProgressGraphicsItem::SetBarColor(const QColor& beforeColor, const QColor& afterColor, const QColor& fontColor)
{
    m_BeforeColor = beforeColor;
    m_AfterColor = afterColor;
    m_FontColor  = fontColor;
}

void ModelProgressGraphicsItem::SetBarText(const QString& barText, const QString& veryText, const QString& topText)
{
    m_BarText  = barText;
    m_VeryText = veryText;
    m_TopText  = topText;
}

QRectF ModelProgressGraphicsItem::boundingRect () const
{
    qreal dPenWidth = 2;

    qreal topLeftX = -(m_width + dPenWidth)/2;
    qreal topLeftY = -(m_height + dPenWidth)/2;

    return QRectF(topLeftX, topLeftY, m_width + dPenWidth, m_height + dPenWidth);
}

void ModelProgressGraphicsItem::UpdatePosition()
{
}

int ModelProgressGraphicsItem::GetBarType() const
{
    return m_BarType;
}

int ModelProgressGraphicsItem::GetStepID() const
{
    return m_StepID;
}

void ModelProgressGraphicsItem::paint(QPainter *pPainter, const QStyleOptionGraphicsItem */*pOption*/, QWidget */*pWidget*/)
{
    QPen pen;
    //设置显示条宽度
    pen.setWidth(BARWIDTH);
    pen.setCapStyle(Qt::RoundCap);

    qreal topLeftX = -(m_width + pen.width()) / 2;
    qreal topLeftY = -(m_height + pen.width()) / 2;

    //设置字符所占像素宽度
    QLabel label;
    int nLenght = label.fontMetrics().width(m_BarText);

    //设置渐变效果
    QLinearGradient linegradient(topLeftX,topLeftY,topLeftX + nLenght,topLeftY);
    linegradient.setColorAt(0.3,m_BeforeColor);
    linegradient.setColorAt(1.0,m_AfterColor);
    pen.setBrush(linegradient);
    pPainter->setPen(pen);

    pPainter->drawLine(topLeftX, topLeftY,topLeftX + nLenght,topLeftY);

    pen.setCapStyle(Qt::FlatCap);
    pen.setColor(m_BeforeColor);
    pPainter->setPen(pen);
    pPainter->drawLine(topLeftX-10, topLeftY,topLeftX - 1,topLeftY);

    //绘制显示条文字
    pen.setColor(m_FontColor);
    pPainter->setPen(pen);
    pPainter->drawText(topLeftX - 7, topLeftY + 4,m_BarText);
    pPainter->drawText(topLeftX + nLenght + 10,topLeftY + 4,m_VeryText);
    pPainter->drawText(topLeftX - 10, topLeftY -12,m_TopText);
}