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40 ****************************************************************************/
42 #ifndef QLINECONTROL_P_H
43 #define QLINECONTROL_P_H
49 // This file is not part of the Qt API. It exists purely as an
50 // implementation detail. This header file may change from version to
51 // version without notice, or even be removed.
56 #include "QtCore/qglobal.h"
58 #include "QtGui/qtextlayout.h"
59 #include "QtCore/qpointer.h"
60 #include "QtGui/qclipboard.h"
61 #include "QtGui/qvalidator.h"
62 #include "QtGui/qpalette.h"
63 #include "QtGui/qguiapplication.h"
64 #include "QtCore/qpoint.h"
72 class Q_GUI_EXPORT QLineControl : public QObject
77 QLineControl(const QString &txt = QString())
78 : m_cursor(0), m_preeditCursor(0), m_cursorWidth(0), m_layoutDirection(Qt::LayoutDirectionAuto),
79 m_hideCursor(false), m_separator(0), m_readOnly(0),
80 m_dragEnabled(0), m_echoMode(Normal), m_textDirty(0), m_selDirty(0),
81 m_validInput(1), m_blinkStatus(0), m_blinkPeriod(0), m_blinkTimer(0), m_deleteAllTimer(0),
82 m_ascent(0), m_maxLength(32767), m_lastCursorPos(-1),
83 m_tripleClickTimer(0), m_maskData(0), m_modifiedState(0), m_undoState(0),
84 m_selstart(0), m_selend(0), m_passwordEchoEditing(false)
102 int nextMaskBlank(int pos)
104 int c = findInMask(pos, true, false);
105 m_separator |= (c != pos);
106 return (c != -1 ? c : m_maxLength);
109 int prevMaskBlank(int pos)
111 int c = findInMask(pos, false, false);
112 m_separator |= (c != pos);
113 return (c != -1 ? c : 0);
116 bool isUndoAvailable() const { return !m_readOnly && m_undoState; }
117 bool isRedoAvailable() const { return !m_readOnly && m_undoState < (int)m_history.size(); }
118 void clearUndo() { m_history.clear(); m_modifiedState = m_undoState = 0; }
120 bool isModified() const { return m_modifiedState != m_undoState; }
121 void setModified(bool modified) { m_modifiedState = modified ? -1 : m_undoState; }
123 bool allSelected() const { return !m_text.isEmpty() && m_selstart == 0 && m_selend == (int)m_text.length(); }
124 bool hasSelectedText() const { return !m_text.isEmpty() && m_selend > m_selstart; }
126 int width() const { return qRound(m_textLayout.lineAt(0).width()) + 1; }
127 int height() const { return qRound(m_textLayout.lineAt(0).height()) + 1; }
128 int ascent() const { return m_ascent; }
129 qreal naturalTextWidth() const { return m_textLayout.lineAt(0).naturalTextWidth(); }
131 void setSelection(int start, int length);
133 inline QString selectedText() const { return hasSelectedText() ? m_text.mid(m_selstart, m_selend - m_selstart) : QString(); }
134 QString textBeforeSelection() const { return hasSelectedText() ? m_text.left(m_selstart) : QString(); }
135 QString textAfterSelection() const { return hasSelectedText() ? m_text.mid(m_selend) : QString(); }
137 int selectionStart() const { return hasSelectedText() ? m_selstart : -1; }
138 int selectionEnd() const { return hasSelectedText() ? m_selend : -1; }
139 bool inSelection(int x) const
141 if (m_selstart >= m_selend)
143 int pos = xToPos(x, QTextLine::CursorOnCharacter);
144 return pos >= m_selstart && pos < m_selend;
147 void removeSelection()
149 int priorState = m_undoState;
150 removeSelectedText();
151 finishChange(priorState);
154 int start() const { return 0; }
155 int end() const { return m_text.length(); }
157 #ifndef QT_NO_CLIPBOARD
158 void copy(QClipboard::Mode mode = QClipboard::Clipboard) const;
159 void paste(QClipboard::Mode mode = QClipboard::Clipboard);
162 int cursor() const{ return m_cursor; }
163 int preeditCursor() const { return m_preeditCursor; }
165 int cursorWidth() const { return m_cursorWidth; }
166 void setCursorWidth(int value) { m_cursorWidth = value; }
168 Qt::CursorMoveStyle cursorMoveStyle() const { return m_textLayout.cursorMoveStyle(); }
169 void setCursorMoveStyle(Qt::CursorMoveStyle style) { m_textLayout.setCursorMoveStyle(style); }
171 void moveCursor(int pos, bool mark = false);
172 void cursorForward(bool mark, int steps)
177 c = cursorMoveStyle() == Qt::VisualMoveStyle ? m_textLayout.rightCursorPosition(c)
178 : m_textLayout.nextCursorPosition(c);
179 } else if (steps < 0) {
181 c = cursorMoveStyle() == Qt::VisualMoveStyle ? m_textLayout.leftCursorPosition(c)
182 : m_textLayout.previousCursorPosition(c);
187 void cursorWordForward(bool mark) { moveCursor(m_textLayout.nextCursorPosition(m_cursor, QTextLayout::SkipWords), mark); }
188 void cursorWordBackward(bool mark) { moveCursor(m_textLayout.previousCursorPosition(m_cursor, QTextLayout::SkipWords), mark); }
190 void home(bool mark) { moveCursor(0, mark); }
191 void end(bool mark) { moveCursor(text().length(), mark); }
193 int xToPos(int x, QTextLine::CursorPosition = QTextLine::CursorBetweenCharacters) const;
194 QRect cursorRect() const;
196 qreal cursorToX(int cursor) const { return m_textLayout.lineAt(0).cursorToX(cursor); }
197 qreal cursorToX() const
199 int cursor = m_cursor;
200 if (m_preeditCursor != -1)
201 cursor += m_preeditCursor;
202 return cursorToX(cursor);
205 bool isReadOnly() const { return m_readOnly; }
206 void setReadOnly(bool enable) { m_readOnly = enable; }
210 QString res = m_maskData ? stripString(m_text) : m_text;
211 return (res.isNull() ? QString::fromLatin1("") : res);
213 void setText(const QString &txt) { internalSetText(txt, -1, false); }
214 QString displayText() const { return m_textLayout.text(); }
218 void deselect() { internalDeselect(); finishChange(); }
219 void selectAll() { m_selstart = m_selend = m_cursor = 0; moveCursor(m_text.length(), true); }
221 void insert(const QString &);
223 void undo() { internalUndo(); finishChange(-1, true); }
224 void redo() { internalRedo(); finishChange(); }
225 void selectWordAtPos(int);
227 EchoMode echoMode() const { return EchoMode(m_echoMode); }
228 void setEchoMode(EchoMode mode)
231 m_passwordEchoEditing = false;
235 int maxLength() const { return m_maxLength; }
236 void setMaxLength(int maxLength)
240 m_maxLength = maxLength;
244 #ifndef QT_NO_VALIDATOR
245 const QValidator *validator() const { return m_validator; }
246 void setValidator(const QValidator *v) { m_validator = const_cast<QValidator*>(v); }
249 int cursorPosition() const { return m_cursor; }
250 void setCursorPosition(int pos) { if (pos <= m_text.length()) moveCursor(qMax(0, pos)); }
252 bool hasAcceptableInput() const { return hasAcceptableInput(m_text); }
255 QString inputMask() const { return m_maskData ? m_inputMask + QLatin1Char(';') + m_blank : QString(); }
256 void setInputMask(const QString &mask)
258 parseInputMask(mask);
260 moveCursor(nextMaskBlank(0));
265 bool composeMode() const { return !m_textLayout.preeditAreaText().isEmpty(); }
266 void setPreeditArea(int cursor, const QString &text) { m_textLayout.setPreeditArea(cursor, text); }
269 QString preeditAreaText() const { return m_textLayout.preeditAreaText(); }
271 void updatePasswordEchoEditing(bool editing);
272 bool passwordEchoEditing() const { return m_passwordEchoEditing; }
274 QChar passwordCharacter() const { return m_passwordCharacter; }
275 void setPasswordCharacter(const QChar &character) { m_passwordCharacter = character; updateDisplayText(); }
277 Qt::LayoutDirection layoutDirection() const {
278 if (m_layoutDirection == Qt::LayoutDirectionAuto) {
279 if (m_text.isEmpty())
280 return QGuiApplication::keyboardInputDirection();
281 return m_text.isRightToLeft() ? Qt::RightToLeft : Qt::LeftToRight;
283 return m_layoutDirection;
285 void setLayoutDirection(Qt::LayoutDirection direction)
287 if (direction != m_layoutDirection) {
288 m_layoutDirection = direction;
293 void setFont(const QFont &font) { m_textLayout.setFont(font); updateDisplayText(); }
295 void processInputMethodEvent(QInputMethodEvent *event);
296 void processMouseEvent(QMouseEvent* ev);
297 void processKeyEvent(QKeyEvent* ev);
299 int cursorBlinkPeriod() const { return m_blinkPeriod; }
300 void setCursorBlinkPeriod(int msec);
301 void resetCursorBlinkTimer();
303 bool cursorBlinkStatus() const { return m_blinkStatus; }
305 QString cancelText() const { return m_cancelText; }
306 void setCancelText(const QString &text) { m_cancelText = text; }
308 const QPalette &palette() const { return m_palette; }
309 void setPalette(const QPalette &p) { m_palette = p; }
313 DrawSelections = 0x02,
315 DrawAll = DrawText | DrawSelections | DrawCursor
317 void draw(QPainter *, const QPoint &, const QRect &, int flags = DrawAll);
319 bool processEvent(QEvent *ev);
321 QTextLayout *textLayout()
323 return &m_textLayout;
327 void init(const QString &txt);
328 void removeSelectedText();
329 void internalSetText(const QString &txt, int pos = -1, bool edited = true);
330 void updateDisplayText(bool forceUpdate = false);
332 void internalInsert(const QString &s);
333 void internalDelete(bool wasBackspace = false);
334 void internalRemove(int pos);
336 inline void internalDeselect()
338 m_selDirty |= (m_selend > m_selstart);
339 m_selstart = m_selend = 0;
342 void internalUndo(int until = -1);
350 Qt::LayoutDirection m_layoutDirection;
351 uint m_hideCursor : 1; // used to hide the m_cursor inside preedit areas
352 uint m_separator : 1;
354 uint m_dragEnabled : 1;
356 uint m_textDirty : 1;
358 uint m_validInput : 1;
359 uint m_blinkStatus : 1;
360 int m_blinkPeriod; // 0 for non-blinking cursor
362 int m_deleteAllTimer;
366 QList<int> m_transactions;
367 QPoint m_tripleClick;
368 int m_tripleClickTimer;
369 QString m_cancelText;
371 void emitCursorPositionChanged();
373 bool finishChange(int validateFromState = -1, bool update = false, bool edited = true);
375 #ifndef QT_NO_VALIDATOR
376 QPointer<QValidator> m_validator;
379 struct MaskInputData {
380 enum Casemode { NoCaseMode, Upper, Lower };
381 QChar maskChar; // either the separator char or the inputmask
387 MaskInputData *m_maskData;
389 // undo/redo handling
390 enum CommandType { Separator, Insert, Remove, Delete, RemoveSelection, DeleteSelection, SetSelection };
393 inline Command(CommandType t, int p, QChar c, int ss, int se) : type(t),uc(c),pos(p),selStart(ss),selEnd(se) {}
396 int pos, selStart, selEnd;
400 QVector<Command> m_history;
401 void addCommand(const Command& cmd);
403 inline void separate() { m_separator = true; }
410 void parseInputMask(const QString &maskFields);
411 bool isValidInput(QChar key, QChar mask) const;
412 bool hasAcceptableInput(const QString &text) const;
413 QString maskString(uint pos, const QString &str, bool clear = false) const;
414 QString clearString(uint pos, uint len) const;
415 QString stripString(const QString &str) const;
416 int findInMask(int pos, bool forward, bool findSeparator, QChar searchChar = QChar()) const;
418 // complex text layout
419 QTextLayout m_textLayout;
421 bool m_passwordEchoEditing;
422 QChar m_passwordCharacter;
425 void cursorPositionChanged(int, int);
426 void selectionChanged();
428 void displayTextChanged(const QString &);
429 void textChanged(const QString &);
430 void textEdited(const QString &);
432 void resetInputContext();
433 void updateMicroFocus();
436 void editingFinished();
437 void updateNeeded(const QRect &);
439 #ifdef QT_KEYPAD_NAVIGATION
440 void editFocusChange(bool);
443 virtual void timerEvent(QTimerEvent *event);
446 void _q_clipboardChanged();
447 void _q_deleteSelected();
455 #endif // QLineControl_P_H