/**************************************************************************** ** ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). ** 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 either Technology Preview License Agreement or the ** Beta Release License Agreement. ** ** 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 1.0, included in the file LGPL_EXCEPTION.txt in this ** package. ** ** GNU General Public License Usage ** Alternatively, this file may be used under the terms of the GNU ** General Public License version 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 the GNU General Public License version 3.0 requirements will be ** met: http://www.gnu.org/copyleft/gpl.html. ** ** If you are unsure which license is appropriate for your use, please ** contact the sales department at http://qt.nokia.com/contact. ** $QT_END_LICENSE$ ** ****************************************************************************/ #include "qlinecontrol_p.h" #ifndef QT_NO_LINEEDIT #include "qabstractitemview.h" #include "qclipboard.h" #ifndef QT_NO_ACCESSIBILITY #include "qaccessible.h" #endif #ifndef QT_NO_IM #include "qinputcontext.h" #include "qlist.h" #endif #include "qapplication.h" #ifndef QT_NO_GRAPHICSVIEW #include "qgraphicssceneevent.h" #endif QT_BEGIN_NAMESPACE /*! \internal Updates the display text based of the current edit text If the text has changed will emit displayTextChanged() */ void QLineControl::updateDisplayText() { QString orig = m_textLayout.text(); QString str; if (m_echoMode == QLineEdit::NoEcho) str = QString::fromLatin1(""); else str = m_text; if (m_echoMode == QLineEdit::Password || (m_echoMode == QLineEdit::PasswordEchoOnEdit && !m_passwordEchoEditing)) str.fill(m_passwordCharacter); // replace certain non-printable characters with spaces (to avoid // drawing boxes when using fonts that don't have glyphs for such // characters) QChar* uc = str.data(); for (int i = 0; i < (int)str.length(); ++i) { if ((uc[i] < 0x20 && uc[i] != 0x09) || uc[i] == QChar::LineSeparator || uc[i] == QChar::ParagraphSeparator || uc[i] == QChar::ObjectReplacementCharacter) uc[i] = QChar(0x0020); } m_textLayout.setText(str); QTextOption option; option.setTextDirection(m_layoutDirection); option.setFlags(QTextOption::IncludeTrailingSpaces); m_textLayout.setTextOption(option); m_textLayout.beginLayout(); QTextLine l = m_textLayout.createLine(); m_textLayout.endLayout(); m_ascent = qRound(l.ascent()); if (str != orig) emit displayTextChanged(str); } #ifndef QT_NO_CLIPBOARD /*! \internal Copies the currently selected text into the clipboard using the given \a mode. \note If the echo mode is set to a mode other than Normal then copy will not work. This is to prevent using copy as a method of bypassing password features of the line control. */ void QLineControl::copy(QClipboard::Mode mode) const { QString t = selectedText(); if (!t.isEmpty() && m_echoMode == QLineEdit::Normal) { disconnect(QApplication::clipboard(), SIGNAL(selectionChanged()), this, 0); QApplication::clipboard()->setText(t, mode); connect(QApplication::clipboard(), SIGNAL(selectionChanged()), this, SLOT(_q_clipboardChanged())); } } /*! \internal Inserts the text stored in the application clipboard into the line control. \sa insert() */ void QLineControl::paste() { insert(QApplication::clipboard()->text(QClipboard::Clipboard)); } #endif // !QT_NO_CLIPBOARD /*! \internal Handles the behavior for the backspace key or function. Removes the current selection if there is a selection, otherwise removes the character prior to the cursor position. \sa del() */ void QLineControl::backspace() { int priorState = m_undoState; if (hasSelectedText()) { removeSelectedText(); } else if (m_cursor) { --m_cursor; if (m_maskData) m_cursor = prevMaskBlank(m_cursor); QChar uc = m_text.at(m_cursor); if (m_cursor > 0 && uc.unicode() >= 0xdc00 && uc.unicode() < 0xe000) { // second half of a surrogate, check if we have the first half as well, // if yes delete both at once uc = m_text.at(m_cursor - 1); if (uc.unicode() >= 0xd800 && uc.unicode() < 0xdc00) { internalDelete(true); --m_cursor; } } internalDelete(true); } finishChange(priorState); } /*! \internal Handles the behavior for the delete key or function. Removes the current selection if there is a selection, otherwise removes the character after the cursor position. \sa del() */ void QLineControl::del() { int priorState = m_undoState; if (hasSelectedText()) { removeSelectedText(); } else { int n = m_textLayout.nextCursorPosition(m_cursor) - m_cursor; while (n--) internalDelete(); } finishChange(priorState); } /*! \internal Inserts the given \a newText at the current cursor position. If there is any selected text it is removed prior to insertion of the new text. */ void QLineControl::insert(const QString &newText) { int priorState = m_undoState; removeSelectedText(); internalInsert(newText); finishChange(priorState); } /*! \internal Clears the line control text. */ void QLineControl::clear() { int priorState = m_undoState; m_selstart = 0; m_selend = m_text.length(); removeSelectedText(); separate(); finishChange(priorState, /*update*/false, /*edited*/false); } /*! \internal Sets \a length characters from the given \a start position as selected. The given \a start position must be within the current text for the line control. If \a length characters cannot be selected, then the selection will extend to the end of the current text. */ void QLineControl::setSelection(int start, int length) { if(start < 0 || start > (int)m_text.length()){ qWarning("QLineControl::setSelection: Invalid start position"); return; } if (length > 0) { if (start == m_selstart && start + length == m_selend) return; m_selstart = start; m_selend = qMin(start + length, (int)m_text.length()); m_cursor = m_selend; } else { if (start == m_selend && start + length == m_selstart) return; m_selstart = qMax(start + length, 0); m_selend = start; m_cursor = m_selstart; } emit selectionChanged(); emitCursorPositionChanged(); } void QLineControl::_q_clipboardChanged() { } void QLineControl::_q_deleteSelected() { if (!hasSelectedText()) return; int priorState = m_undoState; emit resetInputContext(); removeSelectedText(); separate(); finishChange(priorState); } /*! \internal Initializes the line control with a starting text value of \a txt. */ void QLineControl::init(const QString &txt) { m_text = txt; updateDisplayText(); m_cursor = m_text.length(); } /*! \internal Sets the password echo editing to \a editing. If password echo editing is true, then the text of the password is displayed even if the echo mode is set to QLineEdit::PasswordEchoOnEdit. Password echoing editing does not affect other echo modes. */ void QLineControl::updatePasswordEchoEditing(bool editing) { m_passwordEchoEditing = editing; updateDisplayText(); } /*! \internal Returns the cursor position of the given \a x pixel value in relation to the displayed text. The given \a betweenOrOn specified what kind of cursor position is requested. */ int QLineControl::xToPos(int x, QTextLine::CursorPosition betweenOrOn) const { return m_textLayout.lineAt(0).xToCursor(x, betweenOrOn); } /*! \internal Returns the bounds of the current cursor, as defined as a between characters cursor. */ QRect QLineControl::cursorRect() const { QTextLine l = m_textLayout.lineAt(0); int c = m_cursor; if (m_preeditCursor != -1) c += m_preeditCursor; int cix = qRound(l.cursorToX(c)); int w = m_cursorWidth; int ch = l.height() + 1; return QRect(cix-5, 0, w+9, ch); } /*! \internal Fixes the current text so that it is valid given any set validators. Returns true if the text was changed. Otherwise returns false. */ bool QLineControl::fixup() // this function assumes that validate currently returns != Acceptable { #ifndef QT_NO_VALIDATOR if (m_validator) { QString textCopy = m_text; int cursorCopy = m_cursor; m_validator->fixup(textCopy); if (m_validator->validate(textCopy, cursorCopy) == QValidator::Acceptable) { if (textCopy != m_text || cursorCopy != m_cursor) internalSetText(textCopy, cursorCopy); return true; } } #endif return false; } /*! \internal Moves the cursor to the given position \a pos. If \a mark is true will adjust the currently selected text. */ void QLineControl::moveCursor(int pos, bool mark) { if (pos != m_cursor) { separate(); if (m_maskData) pos = pos > m_cursor ? nextMaskBlank(pos) : prevMaskBlank(pos); } if (mark) { int anchor; if (m_selend > m_selstart && m_cursor == m_selstart) anchor = m_selend; else if (m_selend > m_selstart && m_cursor == m_selend) anchor = m_selstart; else anchor = m_cursor; m_selstart = qMin(anchor, pos); m_selend = qMax(anchor, pos); updateDisplayText(); } else { internalDeselect(); } m_cursor = pos; if (mark || m_selDirty) { m_selDirty = false; emit selectionChanged(); } emitCursorPositionChanged(); } /*! \internal Applies the given input method event \a event to the text of the line control */ void QLineControl::processInputMethodEvent(QInputMethodEvent *event) { int priorState = m_undoState; removeSelectedText(); int c = m_cursor; // cursor position after insertion of commit string if (event->replacementStart() <= 0) c += event->commitString().length() + qMin(-event->replacementStart(), event->replacementLength()); m_cursor += event->replacementStart(); // insert commit string if (event->replacementLength()) { m_selstart = m_cursor; m_selend = m_selstart + event->replacementLength(); removeSelectedText(); } if (!event->commitString().isEmpty()) insert(event->commitString()); m_cursor = qMin(c, m_text.length()); setPreeditArea(m_cursor, event->preeditString()); m_preeditCursor = event->preeditString().length(); m_hideCursor = false; QList formats; for (int i = 0; i < event->attributes().size(); ++i) { const QInputMethodEvent::Attribute &a = event->attributes().at(i); if (a.type == QInputMethodEvent::Cursor) { m_preeditCursor = a.start; m_hideCursor = !a.length; } else if (a.type == QInputMethodEvent::TextFormat) { QTextCharFormat f = qvariant_cast(a.value).toCharFormat(); if (f.isValid()) { QTextLayout::FormatRange o; o.start = a.start + m_cursor; o.length = a.length; o.format = f; formats.append(o); } } } m_textLayout.setAdditionalFormats(formats); updateDisplayText(); if (!event->commitString().isEmpty()) emitCursorPositionChanged(); finishChange(priorState); } /*! \internal Draws the display text for the line control using the given \a painter, \a clip, and \a offset. Which aspects of the display text are drawn is specified by the given \a flags. If the flags contain DrawSelections, then the selection or input mask backgrounds and foregrounds will be applied before drawing the text. If the flags contain DrawCursor a cursor of the current cursorWidth() will be drawn after drawing the text. The display text will only be drawn if the flags contain DrawText */ void QLineControl::draw(QPainter *painter, const QPoint &offset, const QRect &clip, int flags) { QVector selections; if (flags & DrawSelections) { QTextLayout::FormatRange o; if (m_selstart < m_selend) { o.start = m_selstart; o.length = m_selend - m_selstart; o.format.setBackground(m_palette.brush(QPalette::Highlight)); o.format.setForeground(m_palette.brush(QPalette::HighlightedText)); } else { // mask selection o.start = m_cursor; o.length = 1; o.format.setBackground(m_palette.brush(QPalette::Text)); o.format.setForeground(m_palette.brush(QPalette::Window)); } selections.append(o); } if (flags & DrawText) m_textLayout.draw(painter, offset, selections, clip); if (flags & DrawCursor){ if(!m_blinkPeriod || m_blinkStatus) m_textLayout.drawCursor(painter, offset, m_cursor, m_cursorWidth); } } /*! \internal Sets the selection to cover the word at the given cursor position. The word boundries is defined by the behavior of QTextLayout::SkipWords cursor mode. */ void QLineControl::selectWordAtPos(int cursor) { int c = m_textLayout.previousCursorPosition(cursor, QTextLayout::SkipWords); moveCursor(c, false); // ## text layout should support end of words. int end = m_textLayout.nextCursorPosition(cursor, QTextLayout::SkipWords); while (end > cursor && m_text[end-1].isSpace()) --end; moveCursor(end, true); } /*! \internal Completes a change to the line control text. If the change is not valid will undo the line control state back to the given \a validateFromState. If \a edited is true and the change is valid, will emit textEdited() in addition to textChanged(). Otherwise only emits textChanged() on a valid change. The \a update value is currently unused. */ bool QLineControl::finishChange(int validateFromState, bool update, bool edited) { Q_UNUSED(update) bool lineDirty = m_selDirty; if (m_textDirty) { // do validation bool wasValidInput = m_validInput; m_validInput = true; #ifndef QT_NO_VALIDATOR if (m_validator) { m_validInput = false; QString textCopy = m_text; int cursorCopy = m_cursor; m_validInput = (m_validator->validate(textCopy, cursorCopy) != QValidator::Invalid); if (m_validInput) { if (m_text != textCopy) { internalSetText(textCopy, cursorCopy); return true; } m_cursor = cursorCopy; } } #endif if (validateFromState >= 0 && wasValidInput && !m_validInput) { if (m_transactions.count()) return false; internalUndo(validateFromState); m_history.resize(m_undoState); if (m_modifiedState > m_undoState) m_modifiedState = -1; m_validInput = true; m_textDirty = false; } updateDisplayText(); lineDirty |= m_textDirty; if (m_textDirty) { m_textDirty = false; QString actualText = text(); if (edited) emit textEdited(actualText); emit textChanged(actualText); } } if (m_selDirty) { m_selDirty = false; emit selectionChanged(); } emitCursorPositionChanged(); return true; } /*! \internal An internal function for setting the text of the line control. */ void QLineControl::internalSetText(const QString &txt, int pos, bool edited) { internalDeselect(); emit resetInputContext(); QString oldText = m_text; if (m_maskData) { m_text = maskString(0, txt, true); m_text += clearString(m_text.length(), m_maxLength - m_text.length()); } else { m_text = txt.isEmpty() ? txt : txt.left(m_maxLength); } m_history.clear(); m_modifiedState = m_undoState = 0; m_cursor = (pos < 0 || pos > m_text.length()) ? m_text.length() : pos; m_textDirty = (oldText != m_text); finishChange(-1, true, edited); } /*! \internal Adds the given \a command to the undo history of the line control. Does not apply the command. */ void QLineControl::addCommand(const Command &cmd) { if (m_separator && m_undoState && m_history[m_undoState - 1].type != Separator) { m_history.resize(m_undoState + 2); m_history[m_undoState++] = Command(Separator, m_cursor, 0, m_selstart, m_selend); } else { m_history.resize(m_undoState + 1); } m_separator = false; m_history[m_undoState++] = cmd; } /*! \internal Inserts the given string \a s into the line control. Also adds the appropriate commands into the undo history. This function does not call finishChange(), and may leave the text in an invalid state. */ void QLineControl::internalInsert(const QString &s) { if (hasSelectedText()) addCommand(Command(SetSelection, m_cursor, 0, m_selstart, m_selend)); if (m_maskData) { QString ms = maskString(m_cursor, s); for (int i = 0; i < (int) ms.length(); ++i) { addCommand (Command(DeleteSelection, m_cursor + i, m_text.at(m_cursor + i), -1, -1)); addCommand(Command(Insert, m_cursor + i, ms.at(i), -1, -1)); } m_text.replace(m_cursor, ms.length(), ms); m_cursor += ms.length(); m_cursor = nextMaskBlank(m_cursor); m_textDirty = true; } else { int remaining = m_maxLength - m_text.length(); if (remaining != 0) { m_text.insert(m_cursor, s.left(remaining)); for (int i = 0; i < (int) s.left(remaining).length(); ++i) addCommand(Command(Insert, m_cursor++, s.at(i), -1, -1)); m_textDirty = true; } } } /*! \internal deletes a single character from the current text. If \a wasBackspace, the character prior to the cursor is removed. Otherwise the character after the cursor is removed. Also adds the appropriate commands into the undo history. This function does not call finishChange(), and may leave the text in an invalid state. */ void QLineControl::internalDelete(bool wasBackspace) { if (m_cursor < (int) m_text.length()) { if (hasSelectedText()) addCommand(Command(SetSelection, m_cursor, 0, m_selstart, m_selend)); addCommand(Command((CommandType)((m_maskData ? 2 : 0) + (wasBackspace ? Remove : Delete)), m_cursor, m_text.at(m_cursor), -1, -1)); if (m_maskData) { m_text.replace(m_cursor, 1, clearString(m_cursor, 1)); addCommand(Command(Insert, m_cursor, m_text.at(m_cursor), -1, -1)); } else { m_text.remove(m_cursor, 1); } m_textDirty = true; } } /*! \internal removes the currently selected text from the line control. Also adds the appropriate commands into the undo history. This function does not call finishChange(), and may leave the text in an invalid state. */ void QLineControl::removeSelectedText() { if (m_selstart < m_selend && m_selend <= (int) m_text.length()) { separate(); int i ; addCommand(Command(SetSelection, m_cursor, 0, m_selstart, m_selend)); if (m_selstart <= m_cursor && m_cursor < m_selend) { // cursor is within the selection. Split up the commands // to be able to restore the correct cursor position for (i = m_cursor; i >= m_selstart; --i) addCommand (Command(DeleteSelection, i, m_text.at(i), -1, 1)); for (i = m_selend - 1; i > m_cursor; --i) addCommand (Command(DeleteSelection, i - m_cursor + m_selstart - 1, m_text.at(i), -1, -1)); } else { for (i = m_selend-1; i >= m_selstart; --i) addCommand (Command(RemoveSelection, i, m_text.at(i), -1, -1)); } if (m_maskData) { m_text.replace(m_selstart, m_selend - m_selstart, clearString(m_selstart, m_selend - m_selstart)); for (int i = 0; i < m_selend - m_selstart; ++i) addCommand(Command(Insert, m_selstart + i, m_text.at(m_selstart + i), -1, -1)); } else { m_text.remove(m_selstart, m_selend - m_selstart); } if (m_cursor > m_selstart) m_cursor -= qMin(m_cursor, m_selend) - m_selstart; internalDeselect(); m_textDirty = true; } } /*! \internal Parses the input mask specified by \a maskFields to generate the mask data used to handle input masks. */ void QLineControl::parseInputMask(const QString &maskFields) { int delimiter = maskFields.indexOf(QLatin1Char(';')); if (maskFields.isEmpty() || delimiter == 0) { if (m_maskData) { delete [] m_maskData; m_maskData = 0; m_maxLength = 32767; internalSetText(QString()); } return; } if (delimiter == -1) { m_blank = QLatin1Char(' '); m_inputMask = maskFields; } else { m_inputMask = maskFields.left(delimiter); m_blank = (delimiter + 1 < maskFields.length()) ? maskFields[delimiter + 1] : QLatin1Char(' '); } // calculate m_maxLength / m_maskData length m_maxLength = 0; QChar c = 0; for (int i=0; i 0 && m_inputMask.at(i-1) == QLatin1Char('\\')) { m_maxLength++; continue; } if (c != QLatin1Char('\\') && c != QLatin1Char('!') && c != QLatin1Char('<') && c != QLatin1Char('>') && c != QLatin1Char('{') && c != QLatin1Char('}') && c != QLatin1Char('[') && c != QLatin1Char(']')) m_maxLength++; } delete [] m_maskData; m_maskData = new MaskInputData[m_maxLength]; MaskInputData::Casemode m = MaskInputData::NoCaseMode; c = 0; bool s; bool escape = false; int index = 0; for (int i = 0; i < m_inputMask.length(); i++) { c = m_inputMask.at(i); if (escape) { s = true; m_maskData[index].maskChar = c; m_maskData[index].separator = s; m_maskData[index].caseMode = m; index++; escape = false; } else if (c == QLatin1Char('<')) { m = MaskInputData::Lower; } else if (c == QLatin1Char('>')) { m = MaskInputData::Upper; } else if (c == QLatin1Char('!')) { m = MaskInputData::NoCaseMode; } else if (c != QLatin1Char('{') && c != QLatin1Char('}') && c != QLatin1Char('[') && c != QLatin1Char(']')) { switch (c.unicode()) { case 'A': case 'a': case 'N': case 'n': case 'X': case 'x': case '9': case '0': case 'D': case 'd': case '#': case 'H': case 'h': case 'B': case 'b': s = false; break; case '\\': escape = true; default: s = true; break; } if (!escape) { m_maskData[index].maskChar = c; m_maskData[index].separator = s; m_maskData[index].caseMode = m; index++; } } } internalSetText(m_text); } /*! \internal checks if the key is valid compared to the inputMask */ bool QLineControl::isValidInput(QChar key, QChar mask) const { switch (mask.unicode()) { case 'A': if (key.isLetter()) return true; break; case 'a': if (key.isLetter() || key == m_blank) return true; break; case 'N': if (key.isLetterOrNumber()) return true; break; case 'n': if (key.isLetterOrNumber() || key == m_blank) return true; break; case 'X': if (key.isPrint()) return true; break; case 'x': if (key.isPrint() || key == m_blank) return true; break; case '9': if (key.isNumber()) return true; break; case '0': if (key.isNumber() || key == m_blank) return true; break; case 'D': if (key.isNumber() && key.digitValue() > 0) return true; break; case 'd': if ((key.isNumber() && key.digitValue() > 0) || key == m_blank) return true; break; case '#': if (key.isNumber() || key == QLatin1Char('+') || key == QLatin1Char('-') || key == m_blank) return true; break; case 'B': if (key == QLatin1Char('0') || key == QLatin1Char('1')) return true; break; case 'b': if (key == QLatin1Char('0') || key == QLatin1Char('1') || key == m_blank) return true; break; case 'H': if (key.isNumber() || (key >= QLatin1Char('a') && key <= QLatin1Char('f')) || (key >= QLatin1Char('A') && key <= QLatin1Char('F'))) return true; break; case 'h': if (key.isNumber() || (key >= QLatin1Char('a') && key <= QLatin1Char('f')) || (key >= QLatin1Char('A') && key <= QLatin1Char('F')) || key == m_blank) return true; break; default: break; } return false; } /*! \internal Returns true if the given text \a str is valid for any validator or input mask set for the line control. Otherwise returns false */ bool QLineControl::hasAcceptableInput(const QString &str) const { #ifndef QT_NO_VALIDATOR QString textCopy = str; int cursorCopy = m_cursor; if (m_validator && m_validator->validate(textCopy, cursorCopy) != QValidator::Acceptable) return false; #endif if (!m_maskData) return true; if (str.length() != m_maxLength) return false; for (int i=0; i < m_maxLength; ++i) { if (m_maskData[i].separator) { if (str.at(i) != m_maskData[i].maskChar) return false; } else { if (!isValidInput(str.at(i), m_maskData[i].maskChar)) return false; } } return true; } /*! \internal Applies the inputMask on \a str starting from position \a pos in the mask. \a clear specifies from where characters should be gotten when a separator is met in \a str - true means that blanks will be used, false that previous input is used. Calling this when no inputMask is set is undefined. */ QString QLineControl::maskString(uint pos, const QString &str, bool clear) const { if (pos >= (uint)m_maxLength) return QString::fromLatin1(""); QString fill; fill = clear ? clearString(0, m_maxLength) : m_text; int strIndex = 0; QString s = QString::fromLatin1(""); int i = pos; while (i < m_maxLength) { if (strIndex < str.length()) { if (m_maskData[i].separator) { s += m_maskData[i].maskChar; if (str[(int)strIndex] == m_maskData[i].maskChar) strIndex++; ++i; } else { if (isValidInput(str[(int)strIndex], m_maskData[i].maskChar)) { switch (m_maskData[i].caseMode) { case MaskInputData::Upper: s += str[(int)strIndex].toUpper(); break; case MaskInputData::Lower: s += str[(int)strIndex].toLower(); break; default: s += str[(int)strIndex]; } ++i; } else { // search for separator first int n = findInMask(i, true, true, str[(int)strIndex]); if (n != -1) { if (str.length() != 1 || i == 0 || (i > 0 && (!m_maskData[i-1].separator || m_maskData[i-1].maskChar != str[(int)strIndex]))) { s += fill.mid(i, n-i+1); i = n + 1; // update i to find + 1 } } else { // search for valid m_blank if not n = findInMask(i, true, false, str[(int)strIndex]); if (n != -1) { s += fill.mid(i, n-i); switch (m_maskData[n].caseMode) { case MaskInputData::Upper: s += str[(int)strIndex].toUpper(); break; case MaskInputData::Lower: s += str[(int)strIndex].toLower(); break; default: s += str[(int)strIndex]; } i = n + 1; // updates i to find + 1 } } } ++strIndex; } } else break; } return s; } /*! \internal Returns a "cleared" string with only separators and blank chars. Calling this when no inputMask is set is undefined. */ QString QLineControl::clearString(uint pos, uint len) const { if (pos >= (uint)m_maxLength) return QString(); QString s; int end = qMin((uint)m_maxLength, pos + len); for (int i = pos; i < end; ++i) if (m_maskData[i].separator) s += m_maskData[i].maskChar; else s += m_blank; return s; } /*! \internal Strips blank parts of the input in a QLineControl when an inputMask is set, separators are still included. Typically "127.0__.0__.1__" becomes "127.0.0.1". */ QString QLineControl::stripString(const QString &str) const { if (!m_maskData) return str; QString s; int end = qMin(m_maxLength, (int)str.length()); for (int i = 0; i < end; ++i) if (m_maskData[i].separator) s += m_maskData[i].maskChar; else if (str[i] != m_blank) s += str[i]; return s; } /*! \internal searches forward/backward in m_maskData for either a separator or a m_blank */ int QLineControl::findInMask(int pos, bool forward, bool findSeparator, QChar searchChar) const { if (pos >= m_maxLength || pos < 0) return -1; int end = forward ? m_maxLength : -1; int step = forward ? 1 : -1; int i = pos; while (i != end) { if (findSeparator) { if (m_maskData[i].separator && m_maskData[i].maskChar == searchChar) return i; } else { if (!m_maskData[i].separator) { if (searchChar.isNull()) return i; else if (isValidInput(searchChar, m_maskData[i].maskChar)) return i; } } i += step; } return -1; } void QLineControl::internalUndo(int until) { if (!isUndoAvailable()) return; internalDeselect(); while (m_undoState && m_undoState > until) { Command& cmd = m_history[--m_undoState]; switch (cmd.type) { case Insert: m_text.remove(cmd.pos, 1); m_cursor = cmd.pos; break; case SetSelection: m_selstart = cmd.selStart; m_selend = cmd.selEnd; m_cursor = cmd.pos; break; case Remove: case RemoveSelection: m_text.insert(cmd.pos, cmd.uc); m_cursor = cmd.pos + 1; break; case Delete: case DeleteSelection: m_text.insert(cmd.pos, cmd.uc); m_cursor = cmd.pos; break; case Separator: continue; } if (until < 0 && m_undoState) { Command& next = m_history[m_undoState-1]; if (next.type != cmd.type && next.type < RemoveSelection && (cmd.type < RemoveSelection || next.type == Separator)) break; } } m_textDirty = true; emitCursorPositionChanged(); } void QLineControl::internalRedo() { if (!isRedoAvailable()) return; internalDeselect(); while (m_undoState < (int)m_history.size()) { Command& cmd = m_history[m_undoState++]; switch (cmd.type) { case Insert: m_text.insert(cmd.pos, cmd.uc); m_cursor = cmd.pos + 1; break; case SetSelection: m_selstart = cmd.selStart; m_selend = cmd.selEnd; m_cursor = cmd.pos; break; case Remove: case Delete: case RemoveSelection: case DeleteSelection: m_text.remove(cmd.pos, 1); m_selstart = cmd.selStart; m_selend = cmd.selEnd; m_cursor = cmd.pos; break; case Separator: m_selstart = cmd.selStart; m_selend = cmd.selEnd; m_cursor = cmd.pos; break; } if (m_undoState < (int)m_history.size()) { Command& next = m_history[m_undoState]; if (next.type != cmd.type && cmd.type < RemoveSelection && next.type != Separator && (next.type < RemoveSelection || cmd.type == Separator)) break; } } m_textDirty = true; emitCursorPositionChanged(); } /*! \internal If the current cursor position differs from the last emited cursor position, emits cursorPositionChanged(). */ void QLineControl::emitCursorPositionChanged() { if (m_cursor != m_lastCursorPos) { const int oldLast = m_lastCursorPos; m_lastCursorPos = m_cursor; cursorPositionChanged(oldLast, m_cursor); } } #ifndef QT_NO_COMPLETER // iterating forward(dir=1)/backward(dir=-1) from the // current row based. dir=0 indicates a new completion prefix was set. bool QLineControl::advanceToEnabledItem(int dir) { int start = m_completer->currentRow(); if (start == -1) return false; int i = start + dir; if (dir == 0) dir = 1; do { if (!m_completer->setCurrentRow(i)) { if (!m_completer->wrapAround()) break; i = i > 0 ? 0 : m_completer->completionCount() - 1; } else { QModelIndex currentIndex = m_completer->currentIndex(); if (m_completer->completionModel()->flags(currentIndex) & Qt::ItemIsEnabled) return true; i += dir; } } while (i != start); m_completer->setCurrentRow(start); // restore return false; } void QLineControl::complete(int key) { if (!m_completer || isReadOnly() || echoMode() != QLineEdit::Normal) return; QString text = this->text(); if (m_completer->completionMode() == QCompleter::InlineCompletion) { if (key == Qt::Key_Backspace) return; int n = 0; if (key == Qt::Key_Up || key == Qt::Key_Down) { if (textAfterSelection().length()) return; QString prefix = hasSelectedText() ? textBeforeSelection() : text; if (text.compare(m_completer->currentCompletion(), m_completer->caseSensitivity()) != 0 || prefix.compare(m_completer->completionPrefix(), m_completer->caseSensitivity()) != 0) { m_completer->setCompletionPrefix(prefix); } else { n = (key == Qt::Key_Up) ? -1 : +1; } } else { m_completer->setCompletionPrefix(text); } if (!advanceToEnabledItem(n)) return; } else { #ifndef QT_KEYPAD_NAVIGATION if (text.isEmpty()) { m_completer->popup()->hide(); return; } #endif m_completer->setCompletionPrefix(text); } m_completer->complete(); } #endif void QLineControl::setCursorBlinkPeriod(int msec) { if (msec == m_blinkPeriod) return; if (m_blinkTimer) { killTimer(m_blinkTimer); } if (msec) { m_blinkTimer = startTimer(msec / 2); m_blinkStatus = 1; } else { m_blinkTimer = 0; if (m_blinkStatus == 0) emit updateNeeded(inputMask().isEmpty() ? cursorRect() : QRect()); } m_blinkPeriod = msec; } void QLineControl::timerEvent(QTimerEvent *event) { if (event->timerId() == m_blinkTimer) { m_blinkStatus = !m_blinkStatus; emit updateNeeded(inputMask().isEmpty() ? cursorRect() : QRect()); } else if (event->timerId() == m_deleteAllTimer) { killTimer(m_deleteAllTimer); m_deleteAllTimer = 0; clear(); } else if (event->timerId() == m_tripleClickTimer) { killTimer(m_tripleClickTimer); m_tripleClickTimer = 0; } } bool QLineControl::processEvent(QEvent* ev) { #ifdef QT_KEYPAD_NAVIGATION if (QApplication::keypadNavigationEnabled()) { if ((ev->type() == QEvent::KeyPress) || (ev->type() == QEvent::KeyRelease)) { QKeyEvent *ke = (QKeyEvent *)ev; if (ke->key() == Qt::Key_Back) { if (ke->isAutoRepeat()) { // Swallow it. We don't want back keys running amok. ke->accept(); return true; } if ((ev->type() == QEvent::KeyRelease) && !isReadOnly() && m_deleteAllTimer) { killTimer(m_deleteAllTimer); m_deleteAllTimer = 0; backspace(); ke->accept(); return true; } } } } #endif switch(ev->type()){ #ifndef QT_NO_GRAPHICSVIEW case QEvent::GraphicsSceneMouseMove: case QEvent::GraphicsSceneMouseRelease: case QEvent::GraphicsSceneMousePress:{ QGraphicsSceneMouseEvent *gvEv = static_cast(ev); QMouseEvent* mouse = new QMouseEvent(ev->type(), gvEv->pos().toPoint(), gvEv->button(), gvEv->buttons(), gvEv->modifiers()); processMouseEvent(mouse); break; } #endif case QEvent::MouseButtonPress: case QEvent::MouseButtonRelease: case QEvent::MouseButtonDblClick: case QEvent::MouseMove: processMouseEvent(static_cast(ev)); break; case QEvent::KeyPress: case QEvent::KeyRelease: processKeyEvent(static_cast(ev)); break; case QEvent::InputMethod: processInputMethodEvent(static_cast(ev)); break; #ifndef QT_NO_SHORTCUT case QEvent::ShortcutOverride:{ QKeyEvent* ke = static_cast(ev); if (ke == QKeySequence::Copy || ke == QKeySequence::Paste || ke == QKeySequence::Cut || ke == QKeySequence::Redo || ke == QKeySequence::Undo || ke == QKeySequence::MoveToNextWord || ke == QKeySequence::MoveToPreviousWord || ke == QKeySequence::MoveToStartOfDocument || ke == QKeySequence::MoveToEndOfDocument || ke == QKeySequence::SelectNextWord || ke == QKeySequence::SelectPreviousWord || ke == QKeySequence::SelectStartOfLine || ke == QKeySequence::SelectEndOfLine || ke == QKeySequence::SelectStartOfBlock || ke == QKeySequence::SelectEndOfBlock || ke == QKeySequence::SelectStartOfDocument || ke == QKeySequence::SelectAll || ke == QKeySequence::SelectEndOfDocument) { ke->accept(); } else if (ke->modifiers() == Qt::NoModifier || ke->modifiers() == Qt::ShiftModifier || ke->modifiers() == Qt::KeypadModifier) { if (ke->key() < Qt::Key_Escape) { ke->accept(); } else { switch (ke->key()) { case Qt::Key_Delete: case Qt::Key_Home: case Qt::Key_End: case Qt::Key_Backspace: case Qt::Key_Left: case Qt::Key_Right: ke->accept(); default: break; } } } } #endif default: return false; } return true; } void QLineControl::processMouseEvent(QMouseEvent* ev) { switch (ev->type()) { case QEvent::GraphicsSceneMousePress: case QEvent::MouseButtonPress:{ if (m_tripleClickTimer && (ev->pos() - m_tripleClick).manhattanLength() < QApplication::startDragDistance()) { selectAll(); return; } if (ev->button() == Qt::RightButton) return; bool mark = ev->modifiers() & Qt::ShiftModifier; int cursor = xToPos(ev->pos().x()); moveCursor(cursor, mark); break; } case QEvent::MouseButtonDblClick: if (ev->button() == Qt::LeftButton) { selectWordAtPos(xToPos(ev->pos().x())); if (m_tripleClickTimer) killTimer(m_tripleClickTimer); m_tripleClickTimer = startTimer(QApplication::doubleClickInterval()); m_tripleClick = ev->pos(); } break; case QEvent::GraphicsSceneMouseRelease: case QEvent::MouseButtonRelease: #ifndef QT_NO_CLIPBOARD if (QApplication::clipboard()->supportsSelection()) { if (ev->button() == Qt::LeftButton) { copy(QClipboard::Selection); } else if (!isReadOnly() && ev->button() == Qt::MidButton) { deselect(); insert(QApplication::clipboard()->text(QClipboard::Selection)); } } #endif break; case QEvent::GraphicsSceneMouseMove: case QEvent::MouseMove: if (ev->buttons() & Qt::LeftButton) { moveCursor(xToPos(ev->pos().x()), true); } break; default: break; } } void QLineControl::processKeyEvent(QKeyEvent* event) { bool inlineCompletionAccepted = false; #ifndef QT_NO_COMPLETER if (m_completer) { QCompleter::CompletionMode completionMode = m_completer->completionMode(); if ((completionMode == QCompleter::PopupCompletion || completionMode == QCompleter::UnfilteredPopupCompletion) && m_completer->popup() && m_completer->popup()->isVisible()) { // The following keys are forwarded by the completer to the widget // Ignoring the events lets the completer provide suitable default behavior switch (event->key()) { case Qt::Key_Escape: event->ignore(); return; case Qt::Key_Enter: case Qt::Key_Return: case Qt::Key_F4: #ifdef QT_KEYPAD_NAVIGATION case Qt::Key_Select: if (!QApplication::keypadNavigationEnabled()) break; #endif m_completer->popup()->hide(); // just hide. will end up propagating to parent default: break; // normal key processing } } else if (completionMode == QCompleter::InlineCompletion) { switch (event->key()) { case Qt::Key_Enter: case Qt::Key_Return: case Qt::Key_F4: #ifdef QT_KEYPAD_NAVIGATION case Qt::Key_Select: if (!QApplication::keypadNavigationEnabled()) break; #endif if (!m_completer->currentCompletion().isEmpty() && hasSelectedText() && textAfterSelection().isEmpty()) { setText(m_completer->currentCompletion()); inlineCompletionAccepted = true; } default: break; // normal key processing } } } #endif // QT_NO_COMPLETER if (echoMode() == QLineEdit::PasswordEchoOnEdit && !passwordEchoEditing() && !isReadOnly() && !event->text().isEmpty() #ifdef QT_KEYPAD_NAVIGATION && event->key() != Qt::Key_Select && event->key() != Qt::Key_Up && event->key() != Qt::Key_Down && event->key() != Qt::Key_Back #endif && !(event->modifiers() & Qt::ControlModifier)) { // Clear the edit and reset to normal echo mode while editing; the // echo mode switches back when the edit loses focus // ### resets current content. dubious code; you can // navigate with keys up, down, back, and select(?), but if you press // "left" or "right" it clears? updatePasswordEchoEditing(true); clear(); } if (event->key() == Qt::Key_Enter || event->key() == Qt::Key_Return) { if (hasAcceptableInput() || fixup()) { emit accepted(); emit editingFinished(); } if (inlineCompletionAccepted) event->accept(); else event->ignore(); return; } bool unknown = false; if (false) { } #ifndef QT_NO_SHORTCUT else if (event == QKeySequence::Undo) { if (!isReadOnly()) undo(); } else if (event == QKeySequence::Redo) { if (!isReadOnly()) redo(); } else if (event == QKeySequence::SelectAll) { selectAll(); } #ifndef QT_NO_CLIPBOARD else if (event == QKeySequence::Copy) { copy(); } else if (event == QKeySequence::Paste) { if (!isReadOnly()) paste(); } else if (event == QKeySequence::Cut) { if (!isReadOnly()) { copy(); del(); } } else if (event == QKeySequence::DeleteEndOfLine) { if (!isReadOnly()) { setSelection(cursor(), end()); copy(); del(); } } #endif //QT_NO_CLIPBOARD else if (event == QKeySequence::MoveToStartOfLine) { home(0); } else if (event == QKeySequence::MoveToEndOfLine) { end(0); } else if (event == QKeySequence::SelectStartOfLine) { home(1); } else if (event == QKeySequence::SelectEndOfLine) { end(1); } else if (event == QKeySequence::MoveToNextChar) { #if !defined(Q_WS_WIN) || defined(QT_NO_COMPLETER) if (hasSelectedText()) { #else if (hasSelectedText() && m_completer && m_completer->completionMode() == QCompleter::InlineCompletion) { #endif moveCursor(selectionEnd(), false); } else { cursorForward(0, layoutDirection() == Qt::LeftToRight ? 1 : -1); } } else if (event == QKeySequence::SelectNextChar) { cursorForward(1, layoutDirection() == Qt::LeftToRight ? 1 : -1); } else if (event == QKeySequence::MoveToPreviousChar) { #if !defined(Q_WS_WIN) || defined(QT_NO_COMPLETER) if (hasSelectedText()) { #else if (hasSelectedText() && m_completer && m_completer->completionMode() == QCompleter::InlineCompletion) { #endif moveCursor(selectionStart(), false); } else { cursorForward(0, layoutDirection() == Qt::LeftToRight ? -1 : 1); } } else if (event == QKeySequence::SelectPreviousChar) { cursorForward(1, layoutDirection() == Qt::LeftToRight ? -1 : 1); } else if (event == QKeySequence::MoveToNextWord) { if (echoMode() == QLineEdit::Normal) layoutDirection() == Qt::LeftToRight ? cursorWordForward(0) : cursorWordBackward(0); else layoutDirection() == Qt::LeftToRight ? end(0) : home(0); } else if (event == QKeySequence::MoveToPreviousWord) { if (echoMode() == QLineEdit::Normal) layoutDirection() == Qt::LeftToRight ? cursorWordBackward(0) : cursorWordForward(0); else if (!isReadOnly()) { layoutDirection() == Qt::LeftToRight ? home(0) : end(0); } } else if (event == QKeySequence::SelectNextWord) { if (echoMode() == QLineEdit::Normal) layoutDirection() == Qt::LeftToRight ? cursorWordForward(1) : cursorWordBackward(1); else layoutDirection() == Qt::LeftToRight ? end(1) : home(1); } else if (event == QKeySequence::SelectPreviousWord) { if (echoMode() == QLineEdit::Normal) layoutDirection() == Qt::LeftToRight ? cursorWordBackward(1) : cursorWordForward(1); else layoutDirection() == Qt::LeftToRight ? home(1) : end(1); } else if (event == QKeySequence::Delete) { if (!isReadOnly()) del(); } else if (event == QKeySequence::DeleteEndOfWord) { if (!isReadOnly()) { cursorWordForward(true); del(); } } else if (event == QKeySequence::DeleteStartOfWord) { if (!isReadOnly()) { cursorWordBackward(true); del(); } } #endif // QT_NO_SHORTCUT else { #ifdef Q_WS_MAC if (event->key() == Qt::Key_Up || event->key() == Qt::Key_Down) { Qt::KeyboardModifiers myModifiers = (event->modifiers() & ~Qt::KeypadModifier); if (myModifiers & Qt::ShiftModifier) { if (myModifiers == (Qt::ControlModifier|Qt::ShiftModifier) || myModifiers == (Qt::AltModifier|Qt::ShiftModifier) || myModifiers == Qt::ShiftModifier) { event->key() == Qt::Key_Up ? home(1) : end(1); } } else { if ((myModifiers == Qt::ControlModifier || myModifiers == Qt::AltModifier || myModifiers == Qt::NoModifier)) { event->key() == Qt::Key_Up ? home(0) : end(0); } } } #endif if (event->modifiers() & Qt::ControlModifier) { switch (event->key()) { case Qt::Key_Backspace: if (!isReadOnly()) { cursorWordBackward(true); del(); } break; #ifndef QT_NO_COMPLETER case Qt::Key_Up: case Qt::Key_Down: complete(event->key()); break; #endif #if defined(Q_WS_X11) case Qt::Key_E: end(0); break; case Qt::Key_U: if (!isReadOnly()) { setSelection(0, text().size()); #ifndef QT_NO_CLIPBOARD copy(); #endif del(); } break; #endif default: unknown = true; } } else { // ### check for *no* modifier switch (event->key()) { case Qt::Key_Backspace: if (!isReadOnly()) { backspace(); #ifndef QT_NO_COMPLETER complete(Qt::Key_Backspace); #endif } break; #ifdef QT_KEYPAD_NAVIGATION case Qt::Key_Back: if (QApplication::keypadNavigationEnabled() && !event->isAutoRepeat() && !isReadOnly()) { if (text().length() == 0) { setText(m_cancelText); if (passwordEchoEditing()) updatePasswordEchoEditing(false); emit editFocusChange(false); } else if (!m_deleteAllTimer) { m_deleteAllTimer = startTimer(750); } } else { unknown = true; } break; #endif default: unknown = true; } } } if (event->key() == Qt::Key_Direction_L || event->key() == Qt::Key_Direction_R) { setLayoutDirection((event->key() == Qt::Key_Direction_L) ? Qt::LeftToRight : Qt::RightToLeft); unknown = false; } if (unknown && !isReadOnly()) { QString t = event->text(); if (!t.isEmpty() && t.at(0).isPrint()) { insert(t); #ifndef QT_NO_COMPLETER complete(event->key()); #endif event->accept(); return; } } if (unknown) event->ignore(); else event->accept(); } QT_END_NAMESPACE #endif