Windows-4.7.4/tools/qtconfig/previewframe.cpp

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#include "previewframe.h"

#include <QBoxLayout>
#include <QPainter>
#include <QMdiSubWindow>

QT_BEGIN_NAMESPACE

PreviewFrame::PreviewFrame( QWidget *parent, const char *name )
    : QFrame( parent, name )
{
    setMinimumSize(200, 200);
    setFrameStyle(QFrame::StyledPanel | QFrame::Sunken);
    setLineWidth(1);

    QVBoxLayout *vbox = new QVBoxLayout(this);
    vbox->setMargin(0);
    previewWidget = new PreviewWidget;
    workspace = new Workspace(this);
    vbox->addWidget(workspace);
    previewWidget->setAutoFillBackground(true);
}

void PreviewFrame::setPreviewPalette(QPalette pal)
{
    previewWidget->setPalette(pal);
}

QString PreviewFrame::previewText() const
{
    return m_previewWindowText;
}

void PreviewFrame::setPreviewVisible(bool visible)
{
    previewWidget->parentWidget()->setVisible(visible);
    if (visible)
        m_previewWindowText = QLatin1String("The moose in the noose\nate the goose who was loose.");
    else
        m_previewWindowText = tr("Desktop settings will only take effect after an application restart.");
    workspace->viewport()->update();
}

Workspace::Workspace(PreviewFrame* parent, const char* name)
    : QMdiArea(parent)
{
    previewFrame = parent;
    PreviewWidget *previewWidget = previewFrame->widget();
    setObjectName(QLatin1String(name));
    QMdiSubWindow *frame = addSubWindow(previewWidget, Qt::Window);
    frame->move(10,10);
    frame->show();
}

void Workspace::paintEvent( QPaintEvent* )
{
    QPainter p (viewport());
    p.fillRect(rect(), palette().color(backgroundRole()).dark());
    p.setPen( QPen( Qt::white ) );
    p.drawText ( 0, height() / 2,  width(), height(), Qt::AlignHCenter, previewFrame->previewText());
}

QT_END_NAMESPACE