inplace_widget_helper.cpp

来自「奇趣公司比较新的qt/emd版本」· C++ 代码 · 共 91 行

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#include "abstractformwindow.h"
#include "inplace_widget_helper.h"

#include <QtGui/QResizeEvent>
#include <QtGui/QPushButton>
#include <QtGui/QToolButton>
#include <QtGui/QShortcut>

namespace qdesigner_internal {
    InPlaceWidgetHelper::InPlaceWidgetHelper(QWidget *editorWidget, QWidget *parentWidget, QDesignerFormWindowInterface *fw)
        : QObject(0),
    m_editorWidget(editorWidget),
    m_parentWidget(parentWidget),
    m_noChildEvent(m_parentWidget->testAttribute(Qt::WA_NoChildEventsForParent))
    {
        (void) new QShortcut(Qt::Key_Escape, m_editorWidget, SLOT(close()));

        m_editorWidget->setAttribute(Qt::WA_DeleteOnClose);
        m_editorWidget->setParent(m_parentWidget->window());
        m_parentWidget->installEventFilter(this);
        connect(m_editorWidget, SIGNAL(destroyed()), fw->mainContainer(), SLOT(setFocus()));
    }

    InPlaceWidgetHelper::~InPlaceWidgetHelper()
    {
        m_parentWidget->setAttribute(Qt::WA_NoChildEventsForParent, m_noChildEvent);
    }

    Qt::Alignment InPlaceWidgetHelper::alignment() const {
         if (m_parentWidget->metaObject()->indexOfProperty("alignment") != -1)
             return Qt::Alignment(m_parentWidget->property("alignment").toInt());

         if (qobject_cast<const QPushButton *>(m_parentWidget)
             || qobject_cast<const QToolButton *>(m_parentWidget) /* tool needs to be more complex */)
             return Qt::AlignHCenter;

         return Qt::AlignJustify;
     }


    bool InPlaceWidgetHelper::eventFilter(QObject *object, QEvent *e)
    {
        Q_ASSERT(object == m_parentWidget);
        Q_UNUSED(object);

        if (e->type() == QEvent::Resize) {
            const QResizeEvent *event = static_cast<const QResizeEvent*>(e);
            m_editorWidget->resize(event->size().width() - 2, m_editorWidget->height());
        }


        return QObject::eventFilter(object, e);
    }
}