/**
 * @file PaiToolBar.cpp
 * @date 2011-9-16
 */
#include <QPainter>

#include "PaiToolBar.h"

using namespace pai::gui;

PaiToolBar::PaiToolBar(QWidget *pParent) :
    QToolBar(pParent)
{
    InitToolBar();
}

PaiToolBar::PaiToolBar(const QString & title, QWidget *pParent) :
    QToolBar(title, pParent)
{
    InitToolBar();
}

PaiToolBar::~PaiToolBar()
{
}

void PaiToolBar::InitToolBar()
{
    m_ShowTopEdge = true;
    m_ShowBottomEdge = true;
    m_ShowLeftEdge = true;
    m_ShowRightEdge = true;

    m_pLeftMarginWgt = new QWidget(this);
    addWidget(m_pLeftMarginWgt);
    SetLeftMargin(4);   // 4px
}

void PaiToolBar::SetLeftMargin(int margin)
{
    m_pLeftMarginWgt->setMaximumHeight(1);
    m_pLeftMarginWgt->setMinimumHeight(1);
    m_pLeftMarginWgt->setMaximumWidth(margin);
    m_pLeftMarginWgt->setMinimumWidth(margin);
}

QAction* PaiToolBar::AddConstSpace(int space)
{
    QWidget *pSpace = new QWidget(this);

    pSpace->setMaximumHeight(1);
    pSpace->setMinimumHeight(1);
    pSpace->setMaximumWidth(space);
    pSpace->setMinimumWidth(space);

    return addWidget(pSpace);
}

void PaiToolBar::ShowBorder(bool top, bool bottom, bool left, bool right)
{
    m_ShowTopEdge = top;
    m_ShowBottomEdge = bottom;
    m_ShowLeftEdge = left;
    m_ShowRightEdge = right;
}

void PaiToolBar::paintEvent(QPaintEvent *pEvent)
{
    Q_UNUSED(pEvent);

    QLinearGradient linearGrad(QPointF(0, 0), QPointF(0, height()));
    linearGrad.setColorAt(0.0, QColor("#FFFFFF"));
    linearGrad.setColorAt(1.0, QColor("#E7F0F8"));

    QRect rt = rect();

    QPainter painter(this);

    painter.setPen(Qt::NoPen);
    painter.setBrush(QBrush(linearGrad));
    painter.drawRect(rt);

    painter.setPen(QColor("#6D8298"));
    if(m_ShowTopEdge)
    {
        painter.drawLine(rt.topLeft(), rt.topRight());
    }
    if(m_ShowBottomEdge)
    {
        painter.drawLine(rt.bottomLeft(), rt.bottomRight());
    }
    if(m_ShowLeftEdge)
    {
        painter.drawLine(rt.topLeft(), rt.bottomLeft());
    }
    if(m_ShowRightEdge)
    {
        painter.drawLine(rt.topRight(), rt.bottomRight());
    }
}

QAction* PaiToolBar::AddSpacer()
{
    QWidget *pWidget = new QWidget;
    QSizePolicy sizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
    sizePolicy.setHorizontalStretch(0);
    sizePolicy.setVerticalStretch(0);
    sizePolicy.setHeightForWidth(pWidget->sizePolicy().hasHeightForWidth());
    pWidget->setSizePolicy(sizePolicy);

    return addWidget(pWidget);
}