stylesheeteditor.cpp

来自「奇趣公司比较新的qt/emd版本」· C++ 代码 · 共 135 行

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/*
TRANSLATOR qdesigner_internal::StyleSheetEditorDialog
*/

#include "stylesheeteditor_p.h"
#include "csshighlighter_p.h"

#include <QtDesigner/QDesignerFormWindowInterface>
#include <QtDesigner/QDesignerFormWindowCursorInterface>
#include <QtDesigner/QDesignerFormEditorInterface>
#include <QtDesigner/QDesignerPropertySheetExtension>
#include <QtDesigner/QExtensionManager>

#include <QtGui/QDialogButtonBox>
#include <QtGui/QPushButton>
#include <QtGui/QVBoxLayout>
#include <QtGui/QMessageBox>
#include "private/qcssparser_p.h"

namespace qdesigner_internal {

StyleSheetEditor::StyleSheetEditor(QWidget *parent)
    : QTextEdit(parent)
{
    setTabStopWidth(fontMetrics().width(QLatin1Char(' '))*4);
}

StyleSheetEditorDialog::StyleSheetEditorDialog(QWidget *fw, QWidget *widget)
    : QDialog(fw), m_widget(widget)
{
    m_fw = qobject_cast<QDesignerFormWindowInterface *>(fw);
    Q_ASSERT(m_fw != 0);
    setWindowTitle(tr("Edit Style Sheet"));
    setWindowFlags(windowFlags() & ~Qt::WindowContextHelpButtonHint);
    QGridLayout *layout = new QGridLayout;
    m_editor = new StyleSheetEditor;
    new CssHighlighter(m_editor->document());
    QDialogButtonBox *buttonBox = new QDialogButtonBox;
    buttonBox->setStandardButtons(QDialogButtonBox::Ok | QDialogButtonBox::Cancel | QDialogButtonBox::Apply);
    QObject::connect(buttonBox, SIGNAL(accepted()), this, SLOT(accept()));
    QObject::connect(buttonBox, SIGNAL(rejected()), this, SLOT(reject()));
    QPushButton *apply = buttonBox->button(QDialogButtonBox::Apply);
    QObject::connect((const QObject *)apply, SIGNAL(clicked()), this, SLOT(applyStyleSheet()));
    QObject::connect(buttonBox, SIGNAL(accepted()), this, SLOT(applyStyleSheet()));

    validityLabel = new QLabel(tr("Valid Style Sheet"));
    QObject::connect(m_editor, SIGNAL(textChanged()), this, SLOT(validateStyleSheet()));

    layout->addWidget(m_editor, 0, 0, 1, 2);;
    layout->addWidget(validityLabel, 1, 0, 1, 1);
    layout->addWidget(buttonBox, 1, 1, 1, 1);
    setLayout(layout);

    QDesignerPropertySheetExtension *sheet = qt_extension<QDesignerPropertySheetExtension*>(m_fw->core()->extensionManager(), m_widget);
    Q_ASSERT(sheet != 0);
    m_editor->setText(sheet->property(sheet->indexOf(QLatin1String("styleSheet"))).toString());

    m_editor->setFocus();
    resize(430, 330);
}

StyleSheetEditor *StyleSheetEditorDialog::editor() const
{
    return m_editor;
}

void StyleSheetEditorDialog::applyStyleSheet()
{
    QString text = m_editor->toPlainText();
    m_fw->cursor()->setWidgetProperty(m_widget, QLatin1String("styleSheet"), QVariant(text));
}

bool StyleSheetEditorDialog::isStyleSheetValid(const QString &styleSheet)
{
    QCss::Parser parser(styleSheet);
    QCss::StyleSheet sheet;
    if (parser.parse(&sheet))
        return true;
    QString fullSheet = QLatin1String("* { ");
    fullSheet += styleSheet;
    fullSheet += QLatin1Char('}');
    QCss::Parser parser2(fullSheet);
    return parser2.parse(&sheet);
}

void StyleSheetEditorDialog::validateStyleSheet()
{
    QString text = m_editor->toPlainText();
    if (!isStyleSheetValid(text)) {
        validityLabel->setText(tr("Invalid Style Sheet"));
        validityLabel->setStyleSheet(QLatin1String("color: red"));
    } else {
        validityLabel->setText(tr("Valid Style Sheet"));
        validityLabel->setStyleSheet(QLatin1String("color: green"));
    }
}

} // namespace qdesigner_internal