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** this package.
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#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()
{
QString clip = QApplication::clipboard()->text(QClipboard::Clipboard);
if (!clip.isEmpty() || hasSelectedText()) {
separate(); //make it a separate undo/redo command
insert(clip);
separate();
}
}
#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 = 0;
bool isGettingInput = !event->commitString().isEmpty()
|| event->preeditString() != preeditAreaText()
|| event->replacementLength() > 0;
bool cursorPositionChanged = false;
if (isGettingInput) {
// If any text is being input, remove selected text.
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());
cursorPositionChanged = true;
}
m_cursor = qMin(c, m_text.length());
for (int i = 0; i < event->attributes().size(); ++i) {
const QInputMethodEvent::Attribute &a = event->attributes().at(i);
if (a.type == QInputMethodEvent::Selection) {
m_cursor = qBound(0, a.start + a.length, m_text.length());
if (a.length) {
m_selstart = qMax(0, qMin(a.start, m_text.length()));
m_selend = m_cursor;
if (m_selend < m_selstart) {
qSwap(m_selstart, m_selend);
}
} else {
m_selstart = m_selend = 0;
}
cursorPositionChanged = true;
}
}
#ifndef QT_NO_IM
setPreeditArea(m_cursor, event->preeditString());
#endif //QT_NO_IM
m_preeditCursor = event->preeditString().length();
m_hideCursor = false;
QList<QTextLayout::FormatRange> 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<QTextFormat>(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 (cursorPositionChanged)
emitCursorPositionChanged();
if (isGettingInput)
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<QTextLayout::FormatRange> 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
if(!m_blinkPeriod || m_blinkStatus){
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){
int cursor = m_cursor;
if (m_preeditCursor != -1)
cursor += m_preeditCursor;
if(!m_blinkPeriod || m_blinkStatus)
m_textLayout.drawCursor(painter, offset, 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<m_inputMask.length(); i++) {
c = m_inputMask.at(i);
if (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 == 1)
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<QGraphicsSceneMouseEvent*>(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<QMouseEvent*>(ev)); break;
case QEvent::KeyPress:
case QEvent::KeyRelease:
processKeyEvent(static_cast<QKeyEvent*>(ev)); break;
case QEvent::InputMethod:
processInputMethodEvent(static_cast<QInputMethodEvent*>(ev)); break;
#ifndef QT_NO_SHORTCUT
case QEvent::ShortcutOverride:{
if (isReadOnly())
return false;
QKeyEvent* ke = static_cast<QKeyEvent*>(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 (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;
}
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();
}
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 || event == QKeySequence::MoveToStartOfBlock) {
home(0);
}
else if (event == QKeySequence::MoveToEndOfLine || event == QKeySequence::MoveToEndOfBlock) {
end(0);
}
else if (event == QKeySequence::SelectStartOfLine || event == QKeySequence::SelectStartOfBlock) {
home(1);
}
else if (event == QKeySequence::SelectEndOfLine || event == QKeySequence::SelectEndOfBlock) {
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 {
bool handled = false;
#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);
}
}
handled = true;
}
#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:
if (!handled)
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:
if (!handled)
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