qplaintextedit.h
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上传日期:2022-06-22
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- /****************************************************************************
- **
- ** Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
- ** Contact: Qt Software Information (qt-info@nokia.com)
- **
- ** This file is part of the QtGui module of the Qt Toolkit.
- **
- ** Commercial Usage
- ** Licensees holding valid Qt Commercial licenses may use this file in
- ** accordance with the Qt Commercial License Agreement provided with the
- ** Software or, alternatively, in accordance with the terms contained in
- ** a written agreement between you and Nokia.
- **
- **
- ** GNU General Public License Usage
- ** Alternatively, this file may be used under the terms of the GNU
- ** General Public License versions 2.0 or 3.0 as published by the Free
- ** Software Foundation and appearing in the file LICENSE.GPL included in
- ** the packaging of this file. Please review the following information
- ** to ensure GNU General Public Licensing requirements will be met:
- ** http://www.fsf.org/licensing/licenses/info/GPLv2.html and
- ** http://www.gnu.org/copyleft/gpl.html. In addition, as a special
- ** exception, Nokia gives you certain additional rights. These rights
- ** are described in the Nokia Qt GPL Exception version 1.3, included in
- ** the file GPL_EXCEPTION.txt in this package.
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- ****************************************************************************/
- #ifndef QPLAINTEXTEDIT_H
- #define QPLAINTEXTEDIT_H
- #include <QtGui/qtextedit.h>
- #include <QtGui/qabstractscrollarea.h>
- #include <QtGui/qtextdocument.h>
- #include <QtGui/qtextoption.h>
- #include <QtGui/qtextcursor.h>
- #include <QtGui/qtextformat.h>
- #include <QtGui/qabstracttextdocumentlayout.h>
- #ifndef QT_NO_TEXTEDIT
- QT_BEGIN_HEADER
- QT_BEGIN_NAMESPACE
- QT_MODULE(Gui)
- class QStyleSheet;
- class QTextDocument;
- class QMenu;
- class QPlainTextEditPrivate;
- class QMimeData;
- class Q_GUI_EXPORT QPlainTextEdit : public QAbstractScrollArea
- {
- Q_OBJECT
- Q_DECLARE_PRIVATE(QPlainTextEdit)
- Q_ENUMS(LineWrapMode)
- Q_PROPERTY(bool tabChangesFocus READ tabChangesFocus WRITE setTabChangesFocus)
- Q_PROPERTY(QString documentTitle READ documentTitle WRITE setDocumentTitle)
- Q_PROPERTY(bool undoRedoEnabled READ isUndoRedoEnabled WRITE setUndoRedoEnabled)
- Q_PROPERTY(LineWrapMode lineWrapMode READ lineWrapMode WRITE setLineWrapMode)
- QDOC_PROPERTY(QTextOption::WrapMode wordWrapMode READ wordWrapMode WRITE setWordWrapMode)
- Q_PROPERTY(bool readOnly READ isReadOnly WRITE setReadOnly)
- Q_PROPERTY(QString plainText READ toPlainText WRITE setPlainText NOTIFY textChanged USER true)
- Q_PROPERTY(bool overwriteMode READ overwriteMode WRITE setOverwriteMode)
- Q_PROPERTY(int tabStopWidth READ tabStopWidth WRITE setTabStopWidth)
- Q_PROPERTY(int cursorWidth READ cursorWidth WRITE setCursorWidth)
- Q_PROPERTY(Qt::TextInteractionFlags textInteractionFlags READ textInteractionFlags WRITE setTextInteractionFlags)
- Q_PROPERTY(int blockCount READ blockCount)
- Q_PROPERTY(int maximumBlockCount READ maximumBlockCount WRITE setMaximumBlockCount)
- Q_PROPERTY(bool backgroundVisible READ backgroundVisible WRITE setBackgroundVisible)
- Q_PROPERTY(bool centerOnScroll READ centerOnScroll WRITE setCenterOnScroll)
- public:
- enum LineWrapMode {
- NoWrap,
- WidgetWidth
- };
- explicit QPlainTextEdit(QWidget *parent = 0);
- explicit QPlainTextEdit(const QString &text, QWidget *parent = 0);
- virtual ~QPlainTextEdit();
- void setDocument(QTextDocument *document);
- QTextDocument *document() const;
- void setTextCursor(const QTextCursor &cursor);
- QTextCursor textCursor() const;
- bool isReadOnly() const;
- void setReadOnly(bool ro);
- void setTextInteractionFlags(Qt::TextInteractionFlags flags);
- Qt::TextInteractionFlags textInteractionFlags() const;
- void mergeCurrentCharFormat(const QTextCharFormat &modifier);
- void setCurrentCharFormat(const QTextCharFormat &format);
- QTextCharFormat currentCharFormat() const;
- bool tabChangesFocus() const;
- void setTabChangesFocus(bool b);
- inline void setDocumentTitle(const QString &title)
- { document()->setMetaInformation(QTextDocument::DocumentTitle, title); }
- inline QString documentTitle() const
- { return document()->metaInformation(QTextDocument::DocumentTitle); }
- inline bool isUndoRedoEnabled() const
- { return document()->isUndoRedoEnabled(); }
- inline void setUndoRedoEnabled(bool enable)
- { document()->setUndoRedoEnabled(enable); }
- inline void setMaximumBlockCount(int maximum)
- { document()->setMaximumBlockCount(maximum); }
- inline int maximumBlockCount() const
- { return document()->maximumBlockCount(); }
- LineWrapMode lineWrapMode() const;
- void setLineWrapMode(LineWrapMode mode);
- QTextOption::WrapMode wordWrapMode() const;
- void setWordWrapMode(QTextOption::WrapMode policy);
- void setBackgroundVisible(bool visible);
- bool backgroundVisible() const;
- void setCenterOnScroll(bool enabled);
- bool centerOnScroll() const;
- bool find(const QString &exp, QTextDocument::FindFlags options = 0);
- inline QString toPlainText() const
- { return document()->toPlainText(); }
- void ensureCursorVisible();
- virtual QVariant loadResource(int type, const QUrl &name);
- #ifndef QT_NO_CONTEXTMENU
- QMenu *createStandardContextMenu();
- #endif
- QTextCursor cursorForPosition(const QPoint &pos) const;
- QRect cursorRect(const QTextCursor &cursor) const;
- QRect cursorRect() const;
- bool overwriteMode() const;
- void setOverwriteMode(bool overwrite);
- int tabStopWidth() const;
- void setTabStopWidth(int width);
- int cursorWidth() const;
- void setCursorWidth(int width);
- void setExtraSelections(const QList<QTextEdit::ExtraSelection> &selections);
- QList<QTextEdit::ExtraSelection> extraSelections() const;
- void moveCursor(QTextCursor::MoveOperation operation, QTextCursor::MoveMode mode = QTextCursor::MoveAnchor);
- bool canPaste() const;
- #ifndef QT_NO_PRINTER
- void print(QPrinter *printer) const;
- #endif
- int blockCount() const;
- public Q_SLOTS:
- void setPlainText(const QString &text);
- #ifndef QT_NO_CLIPBOARD
- void cut();
- void copy();
- void paste();
- #endif
- void undo();
- void redo();
- void clear();
- void selectAll();
- void insertPlainText(const QString &text);
- void appendPlainText(const QString &text);
- void appendHtml(const QString &html);
- void centerCursor();
- Q_SIGNALS:
- void textChanged();
- void undoAvailable(bool b);
- void redoAvailable(bool b);
- void copyAvailable(bool b);
- void selectionChanged();
- void cursorPositionChanged();
- void updateRequest(const QRect &rect, int dy);
- void blockCountChanged(int newBlockCount);
- void modificationChanged(bool);
- protected:
- virtual bool event(QEvent *e);
- virtual void timerEvent(QTimerEvent *e);
- virtual void keyPressEvent(QKeyEvent *e);
- virtual void keyReleaseEvent(QKeyEvent *e);
- virtual void resizeEvent(QResizeEvent *e);
- virtual void paintEvent(QPaintEvent *e);
- virtual void mousePressEvent(QMouseEvent *e);
- virtual void mouseMoveEvent(QMouseEvent *e);
- virtual void mouseReleaseEvent(QMouseEvent *e);
- virtual void mouseDoubleClickEvent(QMouseEvent *e);
- virtual bool focusNextPrevChild(bool next);
- #ifndef QT_NO_CONTEXTMENU
- virtual void contextMenuEvent(QContextMenuEvent *e);
- #endif
- #ifndef QT_NO_DRAGANDDROP
- virtual void dragEnterEvent(QDragEnterEvent *e);
- virtual void dragLeaveEvent(QDragLeaveEvent *e);
- virtual void dragMoveEvent(QDragMoveEvent *e);
- virtual void dropEvent(QDropEvent *e);
- #endif
- virtual void focusInEvent(QFocusEvent *e);
- virtual void focusOutEvent(QFocusEvent *e);
- virtual void showEvent(QShowEvent *);
- virtual void changeEvent(QEvent *e);
- #ifndef QT_NO_WHEELEVENT
- virtual void wheelEvent(QWheelEvent *e);
- #endif
- virtual QMimeData *createMimeDataFromSelection() const;
- virtual bool canInsertFromMimeData(const QMimeData *source) const;
- virtual void insertFromMimeData(const QMimeData *source);
- virtual void inputMethodEvent(QInputMethodEvent *);
- QVariant inputMethodQuery(Qt::InputMethodQuery property) const;
- QPlainTextEdit(QPlainTextEditPrivate &dd, QWidget *parent);
- virtual void scrollContentsBy(int dx, int dy);
- QTextBlock firstVisibleBlock() const;
- QPointF contentOffset() const;
- QRectF blockBoundingRect(const QTextBlock &block) const;
- QRectF blockBoundingGeometry(const QTextBlock &block) const;
- QAbstractTextDocumentLayout::PaintContext getPaintContext() const;
- private:
- Q_DISABLE_COPY(QPlainTextEdit)
- Q_PRIVATE_SLOT(d_func(), void _q_repaintContents(const QRectF &r))
- Q_PRIVATE_SLOT(d_func(), void _q_adjustScrollbars())
- Q_PRIVATE_SLOT(d_func(), void _q_verticalScrollbarActionTriggered(int, int n = 1))
- Q_PRIVATE_SLOT(d_func(), void _q_cursorPositionChanged())
- friend class QPlainTextEditControl;
- };
- class QPlainTextDocumentLayoutPrivate;
- class Q_GUI_EXPORT QPlainTextDocumentLayout : public QAbstractTextDocumentLayout
- {
- Q_OBJECT
- Q_DECLARE_PRIVATE(QPlainTextDocumentLayout)
- Q_PROPERTY(int cursorWidth READ cursorWidth WRITE setCursorWidth)
- public:
- QPlainTextDocumentLayout(QTextDocument *document);
- ~QPlainTextDocumentLayout();
- void draw(QPainter *, const PaintContext &);
- int hitTest(const QPointF &, Qt::HitTestAccuracy ) const;
- int pageCount() const;
- QSizeF documentSize() const;
- QRectF frameBoundingRect(QTextFrame *) const;
- QRectF blockBoundingRect(const QTextBlock &block) const;
- void ensureBlockLayout(const QTextBlock &block) const;
- void setCursorWidth(int width);
- int cursorWidth() const;
- void requestUpdate();
- protected:
- void documentChanged(int from, int /*charsRemoved*/, int charsAdded);
- private:
- void setTextWidth(qreal newWidth);
- qreal textWidth() const;
- void layoutBlock(const QTextBlock &block);
- qreal blockWidth(const QTextBlock &block);
- QPlainTextDocumentLayoutPrivate *priv() const;
- friend class QPlainTextEdit;
- friend class QPlainTextEditPrivate;
- };
- QT_END_NAMESPACE
- QT_END_HEADER
- #endif // QT_NO_TEXTEDIT
- #endif // QPLAINTEXTEDIT_H