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-/****************************************************************************
-**
-** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
-** All rights reserved.
-** Contact: Nokia Corporation (qt-info@nokia.com)
-**
-** This file is part of the QtGui module of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:LGPL$
-** No Commercial Usage
-** This file contains pre-release code and may not be distributed.
-** You may use this file in accordance with the terms and conditions
-** contained in the Technology Preview License Agreement accompanying
-** this package.
-**
-** GNU Lesser General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU Lesser
-** General Public License version 2.1 as published by the Free Software
-** Foundation and appearing in the file LICENSE.LGPL included in the
-** packaging of this file. Please review the following information to
-** ensure the GNU Lesser General Public License version 2.1 requirements
-** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
-**
-** In addition, as a special exception, Nokia gives you certain additional
-** rights. These rights are described in the Nokia Qt LGPL Exception
-** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
-**
-** If you have questions regarding the use of this file, please contact
-** Nokia at qt-info@nokia.com.
-**
-**
-**
-**
-**
-**
-**
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#ifndef QLINECONTROL_P_H
-#define QLINECONTROL_P_H
-
-//
-// W A R N I N G
-// -------------
-//
-// This file is not part of the Qt API. It exists purely as an
-// implementation detail. This header file may change from version to
-// version without notice, or even be removed.
-//
-// We mean it.
-//
-
-#include "QtCore/qglobal.h"
-
-#ifndef QT_NO_LINEEDIT
-#include "private/qwidget_p.h"
-#include "QtGui/qlineedit.h"
-#include "QtGui/qtextlayout.h"
-#include "QtGui/qstyleoption.h"
-#include "QtCore/qpointer.h"
-#include "QtGui/qlineedit.h"
-#include "QtGui/qclipboard.h"
-#include "QtCore/qpoint.h"
-#include "QtGui/qcompleter.h"
-
-QT_BEGIN_HEADER
-
-QT_BEGIN_NAMESPACE
-
-QT_MODULE(Gui)
-
-class Q_GUI_EXPORT QLineControl : public QObject
-{
- Q_OBJECT
-
-public:
- QLineControl(const QString &txt = QString())
- : m_cursor(0), m_preeditCursor(0), m_cursorWidth(0), m_layoutDirection(Qt::LayoutDirectionAuto),
- m_hideCursor(false), m_separator(0), m_readOnly(0),
- m_dragEnabled(0), m_echoMode(0), m_textDirty(0), m_selDirty(0),
- m_validInput(1), m_blinkStatus(0), m_blinkPeriod(0), m_blinkTimer(0), m_deleteAllTimer(0),
- m_ascent(0), m_maxLength(32767), m_lastCursorPos(-1),
- m_tripleClickTimer(0), m_maskData(0), m_modifiedState(0), m_undoState(0),
- m_selstart(0), m_selend(0), m_passwordEchoEditing(false)
- {
- init(txt);
- }
-
- ~QLineControl()
- {
- delete [] m_maskData;
- }
-
- int nextMaskBlank(int pos)
- {
- int c = findInMask(pos, true, false);
- m_separator |= (c != pos);
- return (c != -1 ? c : m_maxLength);
- }
-
- int prevMaskBlank(int pos)
- {
- int c = findInMask(pos, false, false);
- m_separator |= (c != pos);
- return (c != -1 ? c : 0);
- }
-
- bool isUndoAvailable() const { return !m_readOnly && m_undoState; }
- bool isRedoAvailable() const { return !m_readOnly && m_undoState < (int)m_history.size(); }
- void clearUndo() { m_history.clear(); m_modifiedState = m_undoState = 0; }
-
- bool isModified() const { return m_modifiedState != m_undoState; }
- void setModified(bool modified) { m_modifiedState = modified ? -1 : m_undoState; }
-
- bool allSelected() const { return !m_text.isEmpty() && m_selstart == 0 && m_selend == (int)m_text.length(); }
- bool hasSelectedText() const { return !m_text.isEmpty() && m_selend > m_selstart; }
-
- int width() const { return qRound(m_textLayout.lineAt(0).width()) + 1; }
- int height() const { return qRound(m_textLayout.lineAt(0).height()) + 1; }
- int ascent() const { return m_ascent; }
- qreal naturalTextWidth() const { return m_textLayout.lineAt(0).naturalTextWidth(); }
-
- void setSelection(int start, int length);
-
- inline QString selectedText() const { return hasSelectedText() ? m_text.mid(m_selstart, m_selend - m_selstart) : QString(); }
- QString textBeforeSelection() const { return hasSelectedText() ? m_text.left(m_selstart) : QString(); }
- QString textAfterSelection() const { return hasSelectedText() ? m_text.mid(m_selend) : QString(); }
-
- int selectionStart() const { return hasSelectedText() ? m_selstart : -1; }
- int selectionEnd() const { return hasSelectedText() ? m_selend : -1; }
- bool inSelection(int x) const
- {
- if (m_selstart >= m_selend)
- return false;
- int pos = xToPos(x, QTextLine::CursorOnCharacter);
- return pos >= m_selstart && pos < m_selend;
- }
-
- void removeSelection()
- {
- int priorState = m_undoState;
- removeSelectedText();
- finishChange(priorState);
- }
-
- int start() const { return 0; }
- int end() const { return m_text.length(); }
-
-#ifndef QT_NO_CLIPBOARD
- void copy(QClipboard::Mode mode = QClipboard::Clipboard) const;
- void paste(QClipboard::Mode mode = QClipboard::Clipboard);
-#endif
-
- int cursor() const{ return m_cursor; }
- int preeditCursor() const { return m_preeditCursor; }
-
- int cursorWidth() const { return m_cursorWidth; }
- void setCursorWidth(int value) { m_cursorWidth = value; }
-
- QTextCursor::MoveStyle cursorMoveStyle() const { return m_textLayout.cursorMoveStyle(); }
- void setCursorMoveStyle(QTextCursor::MoveStyle style) { m_textLayout.setCursorMoveStyle(style); }
-
- void moveCursor(int pos, bool mark = false);
- void cursorForward(bool mark, int steps)
- {
- int c = m_cursor;
- if (steps > 0) {
- while (steps--)
- c = cursorMoveStyle() == QTextCursor::Visual ? m_textLayout.rightCursorPosition(c)
- : m_textLayout.nextCursorPosition(c);
- } else if (steps < 0) {
- while (steps++)
- c = cursorMoveStyle() == QTextCursor::Visual ? m_textLayout.leftCursorPosition(c)
- : m_textLayout.previousCursorPosition(c);
- }
- moveCursor(c, mark);
- }
-
- void cursorWordForward(bool mark) { moveCursor(m_textLayout.nextCursorPosition(m_cursor, QTextLayout::SkipWords), mark); }
- void cursorWordBackward(bool mark) { moveCursor(m_textLayout.previousCursorPosition(m_cursor, QTextLayout::SkipWords), mark); }
-
- void home(bool mark) { moveCursor(0, mark); }
- void end(bool mark) { moveCursor(text().length(), mark); }
-
- int xToPos(int x, QTextLine::CursorPosition = QTextLine::CursorBetweenCharacters) const;
- QRect cursorRect() const;
-
- qreal cursorToX(int cursor) const { return m_textLayout.lineAt(0).cursorToX(cursor); }
- qreal cursorToX() const
- {
- int cursor = m_cursor;
- if (m_preeditCursor != -1)
- cursor += m_preeditCursor;
- return cursorToX(cursor);
- }
-
- bool isReadOnly() const { return m_readOnly; }
- void setReadOnly(bool enable) { m_readOnly = enable; }
-
- QString text() const
- {
- QString res = m_maskData ? stripString(m_text) : m_text;
- return (res.isNull() ? QString::fromLatin1("") : res);
- }
- void setText(const QString &txt) { internalSetText(txt, -1, false); }
- QString displayText() const { return m_textLayout.text(); }
-
- void backspace();
- void del();
- void deselect() { internalDeselect(); finishChange(); }
- void selectAll() { m_selstart = m_selend = m_cursor = 0; moveCursor(m_text.length(), true); }
-
- void insert(const QString &);
- void clear();
- void undo() { internalUndo(); finishChange(-1, true); }
- void redo() { internalRedo(); finishChange(); }
- void selectWordAtPos(int);
-
- uint echoMode() const { return m_echoMode; }
- void setEchoMode(uint mode)
- {
- m_echoMode = mode;
- m_passwordEchoEditing = false;
- updateDisplayText();
- }
-
- int maxLength() const { return m_maxLength; }
- void setMaxLength(int maxLength)
- {
- if (m_maskData)
- return;
- m_maxLength = maxLength;
- setText(m_text);
- }
-
-#ifndef QT_NO_VALIDATOR
- const QValidator *validator() const { return m_validator; }
- void setValidator(const QValidator *v) { m_validator = const_cast<QValidator*>(v); }
-#endif
-
-#ifndef QT_NO_COMPLETER
- QCompleter *completer() const { return m_completer; }
- /* Note that you must set the widget for the completer separately */
- void setCompleter(const QCompleter *c) { m_completer = const_cast<QCompleter*>(c); }
- void complete(int key);
-#endif
-
- int cursorPosition() const { return m_cursor; }
- void setCursorPosition(int pos) { if (pos <= m_text.length()) moveCursor(qMax(0, pos)); }
-
- bool hasAcceptableInput() const { return hasAcceptableInput(m_text); }
- bool fixup();
-
- QString inputMask() const { return m_maskData ? m_inputMask + QLatin1Char(';') + m_blank : QString(); }
- void setInputMask(const QString &mask)
- {
- parseInputMask(mask);
- if (m_maskData)
- moveCursor(nextMaskBlank(0));
- }
-
- // input methods
-#ifndef QT_NO_IM
- bool composeMode() const { return !m_textLayout.preeditAreaText().isEmpty(); }
- void setPreeditArea(int cursor, const QString &text) { m_textLayout.setPreeditArea(cursor, text); }
-#endif
-
- QString preeditAreaText() const { return m_textLayout.preeditAreaText(); }
-
- void updatePasswordEchoEditing(bool editing);
- bool passwordEchoEditing() const { return m_passwordEchoEditing; }
-
- QChar passwordCharacter() const { return m_passwordCharacter; }
- void setPasswordCharacter(const QChar &character) { m_passwordCharacter = character; updateDisplayText(); }
-
- Qt::LayoutDirection layoutDirection() const {
- if (m_layoutDirection == Qt::LayoutDirectionAuto) {
- if (m_text.isEmpty())
- return QApplication::keyboardInputDirection();
- return m_text.isRightToLeft() ? Qt::RightToLeft : Qt::LeftToRight;
- }
- return m_layoutDirection;
- }
- void setLayoutDirection(Qt::LayoutDirection direction)
- {
- if (direction != m_layoutDirection) {
- m_layoutDirection = direction;
- updateDisplayText();
- }
- }
-
- void setFont(const QFont &font) { m_textLayout.setFont(font); updateDisplayText(); }
-
- void processInputMethodEvent(QInputMethodEvent *event);
- void processMouseEvent(QMouseEvent* ev);
- void processKeyEvent(QKeyEvent* ev);
-
- int cursorBlinkPeriod() const { return m_blinkPeriod; }
- void setCursorBlinkPeriod(int msec);
- void resetCursorBlinkTimer();
-
- QString cancelText() const { return m_cancelText; }
- void setCancelText(const QString &text) { m_cancelText = text; }
-
- const QPalette &palette() const { return m_palette; }
- void setPalette(const QPalette &p) { m_palette = p; }
-
- enum DrawFlags {
- DrawText = 0x01,
- DrawSelections = 0x02,
- DrawCursor = 0x04,
- DrawAll = DrawText | DrawSelections | DrawCursor
- };
- void draw(QPainter *, const QPoint &, const QRect &, int flags = DrawAll);
-
- bool processEvent(QEvent *ev);
-
-private:
- void init(const QString &txt);
- void removeSelectedText();
- void internalSetText(const QString &txt, int pos = -1, bool edited = true);
- void updateDisplayText(bool forceUpdate = false);
-
- void internalInsert(const QString &s);
- void internalDelete(bool wasBackspace = false);
- void internalRemove(int pos);
-
- inline void internalDeselect()
- {
- m_selDirty |= (m_selend > m_selstart);
- m_selstart = m_selend = 0;
- }
-
- void internalUndo(int until = -1);
- void internalRedo();
-
- QString m_text;
- QPalette m_palette;
- int m_cursor;
- int m_preeditCursor;
- int m_cursorWidth;
- Qt::LayoutDirection m_layoutDirection;
- uint m_hideCursor : 1; // used to hide the m_cursor inside preedit areas
- uint m_separator : 1;
- uint m_readOnly : 1;
- uint m_dragEnabled : 1;
- uint m_echoMode : 2;
- uint m_textDirty : 1;
- uint m_selDirty : 1;
- uint m_validInput : 1;
- uint m_blinkStatus : 1;
- int m_blinkPeriod; // 0 for non-blinking cursor
- int m_blinkTimer;
- int m_deleteAllTimer;
- int m_ascent;
- int m_maxLength;
- int m_lastCursorPos;
- QList<int> m_transactions;
- QPoint m_tripleClick;
- int m_tripleClickTimer;
- QString m_cancelText;
-
- void emitCursorPositionChanged();
-
- bool finishChange(int validateFromState = -1, bool update = false, bool edited = true);
-
-#ifndef QT_NO_VALIDATOR
- QPointer<QValidator> m_validator;
-#endif
- QPointer<QCompleter> m_completer;
-#ifndef QT_NO_COMPLETER
- bool advanceToEnabledItem(int dir);
-#endif
-
- struct MaskInputData {
- enum Casemode { NoCaseMode, Upper, Lower };
- QChar maskChar; // either the separator char or the inputmask
- bool separator;
- Casemode caseMode;
- };
- QString m_inputMask;
- QChar m_blank;
- MaskInputData *m_maskData;
-
- // undo/redo handling
- enum CommandType { Separator, Insert, Remove, Delete, RemoveSelection, DeleteSelection, SetSelection };
- struct Command {
- inline Command() {}
- inline Command(CommandType t, int p, QChar c, int ss, int se) : type(t),uc(c),pos(p),selStart(ss),selEnd(se) {}
- uint type : 4;
- QChar uc;
- int pos, selStart, selEnd;
- };
- int m_modifiedState;
- int m_undoState;
- QVector<Command> m_history;
- void addCommand(const Command& cmd);
-
- inline void separate() { m_separator = true; }
-
- // selection
- int m_selstart;
- int m_selend;
-
- // masking
- void parseInputMask(const QString &maskFields);
- bool isValidInput(QChar key, QChar mask) const;
- bool hasAcceptableInput(const QString &text) const;
- QString maskString(uint pos, const QString &str, bool clear = false) const;
- QString clearString(uint pos, uint len) const;
- QString stripString(const QString &str) const;
- int findInMask(int pos, bool forward, bool findSeparator, QChar searchChar = QChar()) const;
-
- // complex text layout
- QTextLayout m_textLayout;
-
- bool m_passwordEchoEditing;
- QChar m_passwordCharacter;
-
-Q_SIGNALS:
- void cursorPositionChanged(int, int);
- void selectionChanged();
-
- void displayTextChanged(const QString &);
- void textChanged(const QString &);
- void textEdited(const QString &);
-
- void resetInputContext();
- void updateMicroFocus();
-
- void accepted();
- void editingFinished();
- void updateNeeded(const QRect &);
-
-#ifdef QT_KEYPAD_NAVIGATION
- void editFocusChange(bool);
-#endif
-protected:
- virtual void timerEvent(QTimerEvent *event);
-
-private Q_SLOTS:
- void _q_clipboardChanged();
- void _q_deleteSelected();
-
-};
-
-QT_END_NAMESPACE
-
-QT_END_HEADER
-
-#endif // QT_NO_LINEEDIT
-
-#endif // QLINECONTROL_P_H