diff options
Diffstat (limited to 'src/widgets/widgets/qplaintextedit.cpp')
-rw-r--r-- | src/widgets/widgets/qplaintextedit.cpp | 279 |
1 files changed, 134 insertions, 145 deletions
diff --git a/src/widgets/widgets/qplaintextedit.cpp b/src/widgets/widgets/qplaintextedit.cpp index 075f27d009..8362c6c629 100644 --- a/src/widgets/widgets/qplaintextedit.cpp +++ b/src/widgets/widgets/qplaintextedit.cpp @@ -1,41 +1,5 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the QtWidgets module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** GNU Lesser General Public License Usage -** Alternatively, this file may be used under the terms of the GNU Lesser -** General Public License version 3 as published by the Free Software -** Foundation and appearing in the file LICENSE.LGPL3 included in the -** packaging of this file. Please review the following information to -** ensure the GNU Lesser General Public License version 3 requirements -** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU -** General Public License version 2.0 or (at your option) the GNU General -** Public license version 3 or any later version approved by the KDE Free -** Qt Foundation. The licenses are as published by the Free Software -** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 -** included in the packaging of this file. Please review the following -** information to ensure the GNU General Public License requirements will -** be met: https://www.gnu.org/licenses/gpl-2.0.html and -** https://www.gnu.org/licenses/gpl-3.0.html. -** -** $QT_END_LICENSE$ -** -****************************************************************************/ +// Copyright (C) 2016 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only #include "qplaintextedit_p.h" @@ -454,22 +418,29 @@ QPlainTextEditControl::QPlainTextEditControl(QPlainTextEdit *parent) setAcceptRichText(false); } -void QPlainTextEditPrivate::_q_cursorPositionChanged() +void QPlainTextEditPrivate::cursorPositionChanged() { pageUpDownLastCursorYIsValid = false; Q_Q(QPlainTextEdit); -#ifndef QT_NO_ACCESSIBILITY +#if QT_CONFIG(accessibility) QAccessibleTextCursorEvent ev(q, q->textCursor().position()); QAccessible::updateAccessibility(&ev); #endif emit q->cursorPositionChanged(); } -void QPlainTextEditPrivate::_q_verticalScrollbarActionTriggered(int action) { - if (action == QAbstractSlider::SliderPageStepAdd) { +void QPlainTextEditPrivate::verticalScrollbarActionTriggered(int action) { + + const auto a = static_cast<QAbstractSlider::SliderAction>(action); + switch (a) { + case QAbstractSlider::SliderPageStepAdd: pageUpDown(QTextCursor::Down, QTextCursor::MoveAnchor, false); - } else if (action == QAbstractSlider::SliderPageStepSub) { + break; + case QAbstractSlider::SliderPageStepSub: pageUpDown(QTextCursor::Up, QTextCursor::MoveAnchor, false); + break; + default: + break; } } @@ -658,10 +629,7 @@ void QPlainTextEditPrivate::setTopBlock(int blockNumber, int lineNumber, int dx) lineNumber = maxTopLine - block.firstLineNumber(); } - { - const QSignalBlocker blocker(vbar); - vbar->setValue(newTopLine); - } + vbar->setValue(newTopLine); if (!dx && blockNumber == control->topBlock && lineNumber == topLine) return; @@ -677,10 +645,7 @@ void QPlainTextEditPrivate::setTopBlock(int blockNumber, int lineNumber, int dx) control->topBlock = blockNumber; topLine = lineNumber; - { - const QSignalBlocker blocker(vbar); - vbar->setValue(block.firstLineNumber() + lineNumber); - } + vbar->setValue(block.firstLineNumber() + lineNumber); if (dx || dy) { viewport->scroll(q->isRightToLeft() ? -dx : dx, dy); @@ -760,9 +725,14 @@ void QPlainTextEditPrivate::updateViewport() } QPlainTextEditPrivate::QPlainTextEditPrivate() - : tabChangesFocus(false), showCursorOnInitialShow(false), backgroundVisible(false), - centerOnScroll(false), inDrag(false), clickCausedFocus(false), placeholderVisible(true), - pageUpDownLastCursorYIsValid(false) + : tabChangesFocus(false) + , showCursorOnInitialShow(false) + , backgroundVisible(false) + , centerOnScroll(false) + , inDrag(false) + , clickCausedFocus(false) + , pageUpDownLastCursorYIsValid(false) + , placeholderTextShown(false) { } @@ -778,23 +748,28 @@ void QPlainTextEditPrivate::init(const QString &txt) control->setPalette(q->palette()); - QObject::connect(vbar, SIGNAL(actionTriggered(int)), q, SLOT(_q_verticalScrollbarActionTriggered(int))); - - QObject::connect(control, SIGNAL(microFocusChanged()), q, SLOT(updateMicroFocus())); - QObject::connect(control, SIGNAL(documentSizeChanged(QSizeF)), q, SLOT(_q_adjustScrollbars())); - QObject::connect(control, SIGNAL(blockCountChanged(int)), q, SIGNAL(blockCountChanged(int))); - QObject::connect(control, SIGNAL(updateRequest(QRectF)), q, SLOT(_q_repaintContents(QRectF))); - QObject::connect(control, SIGNAL(modificationChanged(bool)), q, SIGNAL(modificationChanged(bool))); - - QObject::connect(control, SIGNAL(textChanged()), q, SIGNAL(textChanged())); - QObject::connect(control, SIGNAL(undoAvailable(bool)), q, SIGNAL(undoAvailable(bool))); - QObject::connect(control, SIGNAL(redoAvailable(bool)), q, SIGNAL(redoAvailable(bool))); - QObject::connect(control, SIGNAL(copyAvailable(bool)), q, SIGNAL(copyAvailable(bool))); - QObject::connect(control, SIGNAL(selectionChanged()), q, SIGNAL(selectionChanged())); - QObject::connect(control, SIGNAL(cursorPositionChanged()), q, SLOT(_q_cursorPositionChanged())); - - QObject::connect(control, SIGNAL(textChanged()), q, SLOT(_q_textChanged())); - QObject::connect(control, SIGNAL(textChanged()), q, SLOT(updateMicroFocus())); + QObjectPrivate::connect(vbar, &QAbstractSlider::actionTriggered, + this, &QPlainTextEditPrivate::verticalScrollbarActionTriggered); + QObject::connect(control, &QWidgetTextControl::microFocusChanged, q, + [q](){q->updateMicroFocus(); }); + QObjectPrivate::connect(control, &QWidgetTextControl::documentSizeChanged, + this, &QPlainTextEditPrivate::adjustScrollbars); + QObject::connect(control, &QWidgetTextControl::blockCountChanged, + q, &QPlainTextEdit::blockCountChanged); + QObjectPrivate::connect(control, &QWidgetTextControl::updateRequest, + this, &QPlainTextEditPrivate::repaintContents); + QObject::connect(control, &QWidgetTextControl::modificationChanged, + q, &QPlainTextEdit::modificationChanged); + QObject::connect(control, &QWidgetTextControl::textChanged, q, &QPlainTextEdit::textChanged); + QObject::connect(control, &QWidgetTextControl::undoAvailable, q, &QPlainTextEdit::undoAvailable); + QObject::connect(control, &QWidgetTextControl::redoAvailable, q, &QPlainTextEdit::redoAvailable); + QObject::connect(control, &QWidgetTextControl::copyAvailable, q, &QPlainTextEdit::copyAvailable); + QObject::connect(control, &QWidgetTextControl::selectionChanged, q, &QPlainTextEdit::selectionChanged); + QObjectPrivate::connect(control, &QWidgetTextControl::cursorPositionChanged, + this, &QPlainTextEditPrivate::cursorPositionChanged); + QObjectPrivate::connect(control, &QWidgetTextControl::textChanged, + this, &QPlainTextEditPrivate::updatePlaceholderVisibility); + QObject::connect(control, &QWidgetTextControl::textChanged, q, [q](){q->updateMicroFocus(); }); // set a null page size initially to avoid any relayouting until the textedit // is shown. relayoutDocument() will take care of setting the page size to the @@ -822,26 +797,19 @@ void QPlainTextEditPrivate::init(const QString &txt) #endif } -void QPlainTextEditPrivate::_q_textChanged() +void QPlainTextEditPrivate::updatePlaceholderVisibility() { - Q_Q(QPlainTextEdit); - // We normally only repaint the part of view that contains text in the - // document that has changed (in _q_repaintContents). But the placeholder + // document that has changed (in repaintContents). But the placeholder // text is not a part of the document, but is drawn on separately. So whenever // we either show or hide the placeholder text, we issue a full update. - bool placeholderCurrentyVisible = placeholderVisible; - - placeholderVisible = !placeholderText.isEmpty() - && q->document()->isEmpty() - && (!q->firstVisibleBlock().isValid() || - q->firstVisibleBlock().layout()->preeditAreaText().isEmpty()); - - if (placeholderCurrentyVisible != placeholderVisible) + if (placeholderTextShown != placeHolderTextToBeShown()) { viewport->update(); + placeholderTextShown = placeHolderTextToBeShown(); + } } -void QPlainTextEditPrivate::_q_repaintContents(const QRectF &contentsRect) +void QPlainTextEditPrivate::repaintContents(const QRectF &contentsRect) { Q_Q(QPlainTextEdit); if (!contentsRect.isValid()) { @@ -974,7 +942,7 @@ void QPlainTextEditPrivate::pageUpDown(QTextCursor::MoveOperation op, QTextCurso #if QT_CONFIG(scrollbar) -void QPlainTextEditPrivate::_q_adjustScrollbars() +void QPlainTextEditPrivate::adjustScrollbars() { Q_Q(QPlainTextEdit); QTextDocument *doc = control->document(); @@ -1028,8 +996,6 @@ void QPlainTextEditPrivate::_q_adjustScrollbars() vSliderLength = lineSpacing != 0 ? viewport->height() / lineSpacing : 0; } - - QSizeF documentSize = documentLayout->documentSize(); vbar->setRange(0, qMax(0, vmax)); vbar->setPageStep(vSliderLength); @@ -1038,10 +1004,7 @@ void QPlainTextEditPrivate::_q_adjustScrollbars() if (firstVisibleBlock.isValid()) visualTopLine = firstVisibleBlock.firstLineNumber() + topLine; - { - const QSignalBlocker blocker(vbar); - vbar->setValue(visualTopLine); - } + vbar->setValue(visualTopLine); hbar->setRange(0, (int)documentSize.width() - viewport->width()); hbar->setPageStep(viewport->width()); @@ -1221,10 +1184,8 @@ void QPlainTextEditPrivate::ensureViewportLayouted() editor with line wrap enabled in real time. It also makes for a fast log viewer (see setMaximumBlockCount()). - - \sa QTextDocument, QTextCursor, {Qt Widgets - Application Example}, - {Code Editor Example}, {Syntax Highlighter Example}, - {Rich Text Processing} + \sa QTextDocument, QTextCursor + {Syntax Highlighter Example}, {Rich Text Processing} */ @@ -1336,7 +1297,7 @@ void QPlainTextEdit::setDocument(QTextDocument *document) d->documentLayoutPtr = documentLayout; d->updateDefaultTextOption(); d->relayoutDocument(); - d->_q_adjustScrollbars(); + d->adjustScrollbars(); } /*! @@ -1368,8 +1329,7 @@ void QPlainTextEdit::setPlaceholderText(const QString &placeholderText) Q_D(QPlainTextEdit); if (d->placeholderText != placeholderText) { d->placeholderText = placeholderText; - if (d->control->document()->isEmpty()) - d->viewport->update(); + d->updatePlaceholderVisibility(); } } @@ -1549,53 +1509,61 @@ bool QPlainTextEdit::event(QEvent *e) { Q_D(QPlainTextEdit); + switch (e->type()) { #ifndef QT_NO_CONTEXTMENU - if (e->type() == QEvent::ContextMenu - && static_cast<QContextMenuEvent *>(e)->reason() == QContextMenuEvent::Keyboard) { - ensureCursorVisible(); - const QPoint cursorPos = cursorRect().center(); - QContextMenuEvent ce(QContextMenuEvent::Keyboard, cursorPos, d->viewport->mapToGlobal(cursorPos)); - ce.setAccepted(e->isAccepted()); - const bool result = QAbstractScrollArea::event(&ce); - e->setAccepted(ce.isAccepted()); - return result; - } + case QEvent::ContextMenu: + if (static_cast<QContextMenuEvent *>(e)->reason() == QContextMenuEvent::Keyboard) { + ensureCursorVisible(); + const QPoint cursorPos = cursorRect().center(); + QContextMenuEvent ce(QContextMenuEvent::Keyboard, cursorPos, d->viewport->mapToGlobal(cursorPos)); + ce.setAccepted(e->isAccepted()); + const bool result = QAbstractScrollArea::event(&ce); + e->setAccepted(ce.isAccepted()); + return result; + } + break; #endif // QT_NO_CONTEXTMENU - if (e->type() == QEvent::ShortcutOverride - || e->type() == QEvent::ToolTip) { + case QEvent::ShortcutOverride: + case QEvent::ToolTip: d->sendControlEvent(e); - } + break; #ifdef QT_KEYPAD_NAVIGATION - else if (e->type() == QEvent::EnterEditFocus || e->type() == QEvent::LeaveEditFocus) { + case QEvent::EnterEditFocus: + case QEvent::LeaveEditFocus: if (QApplicationPrivate::keypadNavigationEnabled()) d->sendControlEvent(e); - } + break; #endif #ifndef QT_NO_GESTURES - else if (e->type() == QEvent::Gesture) { - QGestureEvent *ge = static_cast<QGestureEvent *>(e); - QPanGesture *g = static_cast<QPanGesture *>(ge->gesture(Qt::PanGesture)); - if (g) { + case QEvent::Gesture: + if (auto *g = static_cast<QGestureEvent *>(e)->gesture(Qt::PanGesture)) { + QPanGesture *panGesture = static_cast<QPanGesture *>(g); QScrollBar *hBar = horizontalScrollBar(); QScrollBar *vBar = verticalScrollBar(); - if (g->state() == Qt::GestureStarted) + if (panGesture->state() == Qt::GestureStarted) d->originalOffsetY = vBar->value(); - QPointF offset = g->offset(); + QPointF offset = panGesture->offset(); if (!offset.isNull()) { if (QGuiApplication::isRightToLeft()) offset.rx() *= -1; // QPlainTextEdit scrolls by lines only in vertical direction QFontMetrics fm(document()->defaultFont()); int lineHeight = fm.height(); - int newX = hBar->value() - g->delta().x(); + int newX = hBar->value() - panGesture->delta().x(); int newY = d->originalOffsetY - offset.y()/lineHeight; hBar->setValue(newX); vBar->setValue(newY); } } return true; - } #endif // QT_NO_GESTURES + case QEvent::WindowActivate: + case QEvent::WindowDeactivate: + d->control->setPalette(palette()); + break; + default: + break; + } return QAbstractScrollArea::event(e); } @@ -1616,7 +1584,7 @@ void QPlainTextEdit::timerEvent(QTimerEvent *e) const QPoint globalPos = QCursor::pos(); pos = d->viewport->mapFromGlobal(globalPos); QMouseEvent ev(QEvent::MouseMove, pos, d->viewport->mapTo(d->viewport->topLevelWidget(), pos), globalPos, - Qt::LeftButton, Qt::LeftButton, d->keyboardModifiers); + Qt::LeftButton, Qt::LeftButton, QGuiApplication::keyboardModifiers()); mouseMoveEvent(&ev); } int deltaY = qMax(pos.y() - visible.top(), visible.bottom() - pos.y()) - visible.height(); @@ -1681,7 +1649,6 @@ void QPlainTextEdit::setPlainText(const QString &text) void QPlainTextEdit::keyPressEvent(QKeyEvent *e) { Q_D(QPlainTextEdit); - d->keyboardModifiers = e->modifiers(); #ifdef QT_KEYPAD_NAVIGATION switch (e->key()) { @@ -1832,7 +1799,6 @@ void QPlainTextEdit::keyReleaseEvent(QKeyEvent *e) Q_D(QPlainTextEdit); if (!isReadOnly()) d->handleSoftwareInputPanel(); - d->keyboardModifiers = e->modifiers(); #ifdef QT_KEYPAD_NAVIGATION if (QApplicationPrivate::keypadNavigationEnabled()) { @@ -1880,7 +1846,7 @@ void QPlainTextEdit::resizeEvent(QResizeEvent *e) Q_D(QPlainTextEdit); if (e->oldSize().width() != e->size().width()) d->relayoutDocument(); - d->_q_adjustScrollbars(); + d->adjustScrollbars(); } void QPlainTextEditPrivate::relayoutDocument() @@ -1942,11 +1908,11 @@ void QPlainTextEdit::paintEvent(QPaintEvent *e) // keep right margin clean from full-width selection int maxX = offset.x() + qMax((qreal)viewportRect.width(), maximumWidth) - - document()->documentMargin(); + - document()->documentMargin() + cursorWidth(); er.setRight(qMin(er.right(), maxX)); painter.setClipRect(er); - if (d->placeholderVisible) { + if (d->placeHolderTextToBeShown()) { const QColor col = d->control->palette().placeholderText().color(); painter.setPen(col); painter.setClipRect(e->rect()); @@ -2217,6 +2183,10 @@ void QPlainTextEdit::inputMethodEvent(QInputMethodEvent *e) } #endif d->sendControlEvent(e); + const bool emptyEvent = e->preeditString().isEmpty() && e->commitString().isEmpty() + && e->attributes().isEmpty(); + if (emptyEvent) + return; ensureCursorVisible(); } @@ -2241,8 +2211,10 @@ QVariant QPlainTextEdit::inputMethodQuery(Qt::InputMethodQuery query, QVariant a { Q_D(const QPlainTextEdit); switch (query) { - case Qt::ImHints: - case Qt::ImInputItemClipRectangle: + case Qt::ImEnabled: + return isEnabled() && !isReadOnly(); + case Qt::ImHints: + case Qt::ImInputItemClipRectangle: return QWidget::inputMethodQuery(query); case Qt::ImReadOnly: return isReadOnly(); @@ -2314,7 +2286,7 @@ void QPlainTextEdit::showEvent(QShowEvent *) d->showCursorOnInitialShow = false; ensureCursorVisible(); } - d->_q_adjustScrollbars(); + d->adjustScrollbars(); } /*! \reimp @@ -2323,20 +2295,29 @@ void QPlainTextEdit::changeEvent(QEvent *e) { Q_D(QPlainTextEdit); QAbstractScrollArea::changeEvent(e); - if (e->type() == QEvent::ApplicationFontChange - || e->type() == QEvent::FontChange) { + + switch (e->type()) { + case QEvent::ApplicationFontChange: + case QEvent::FontChange: d->control->document()->setDefaultFont(font()); - } else if (e->type() == QEvent::ActivationChange) { + break; + case QEvent::ActivationChange: if (!isActiveWindow()) d->autoScrollTimer.stop(); - } else if (e->type() == QEvent::EnabledChange) { + break; + case QEvent::EnabledChange: e->setAccepted(isEnabled()); d->control->setPalette(palette()); d->sendControlEvent(e); - } else if (e->type() == QEvent::PaletteChange) { + break; + case QEvent::PaletteChange: d->control->setPalette(palette()); - } else if (e->type() == QEvent::LayoutDirectionChange) { + break; + case QEvent::LayoutDirectionChange: d->sendControlEvent(e); + break; + default: + break; } } @@ -2622,7 +2603,7 @@ void QPlainTextEdit::insertFromMimeData(const QMimeData *source) bool QPlainTextEdit::isReadOnly() const { Q_D(const QPlainTextEdit); - return !(d->control->textInteractionFlags() & Qt::TextEditable); + return !d->control || !(d->control->textInteractionFlags() & Qt::TextEditable); } void QPlainTextEdit::setReadOnly(bool ro) @@ -2807,7 +2788,7 @@ void QPlainTextEdit::setLineWrapMode(LineWrapMode wrap) d->lineWrap = wrap; d->updateDefaultTextOption(); d->relayoutDocument(); - d->_q_adjustScrollbars(); + d->adjustScrollbars(); ensureCursorVisible(); } @@ -2893,7 +2874,7 @@ void QPlainTextEdit::setCenterOnScroll(bool enabled) if (enabled == d->centerOnScroll) return; d->centerOnScroll = enabled; - d->_q_adjustScrollbars(); + d->adjustScrollbars(); } @@ -2916,11 +2897,14 @@ bool QPlainTextEdit::find(const QString &exp, QTextDocument::FindFlags options) \overload Finds the next occurrence, matching the regular expression, \a exp, using the given - \a options. The QTextDocument::FindCaseSensitively option is ignored for this overload, - use QRegularExpression::CaseInsensitiveOption instead. + \a options. Returns \c true if a match was found and changes the cursor to select the match; otherwise returns \c false. + + \warning For historical reasons, the case sensitivity option set on + \a exp is ignored. Instead, the \a options are used to determine + if the search is case sensitive or not. */ #if QT_CONFIG(regularexpression) bool QPlainTextEdit::find(const QRegularExpression &exp, QTextDocument::FindFlags options) @@ -3021,12 +3005,17 @@ void QPlainTextEditPrivate::append(const QString &text, Qt::TextFormat format) bool documentSizeChangedBlocked = documentLayout->priv()->blockDocumentSizeChanged; documentLayout->priv()->blockDocumentSizeChanged = true; - if (format == Qt::RichText) + switch (format) { + case Qt::RichText: control->appendHtml(text); - else if (format == Qt::PlainText) + break; + case Qt::PlainText: control->appendPlainText(text); - else + break; + default: control->append(text); + break; + } if (maximumBlockCount > 0) { if (document->blockCount() > maximumBlockCount) { @@ -3048,7 +3037,7 @@ void QPlainTextEditPrivate::append(const QString &text, Qt::TextFormat format) } documentLayout->priv()->blockDocumentSizeChanged = documentSizeChangedBlocked; - _q_adjustScrollbars(); + adjustScrollbars(); if (atBottom) { |