qtextcontrol.cpp

奇趣公司比较新的qt/emd版本

void QTextControl::selectAll()
{
    Q_D(QTextControl);
    d->cursor.select(QTextCursor::Document);
    d->selectionChanged();
    d->cursorIsFocusIndicator = false;
    emit updateRequest(QRectF(QPointF(), d->doc->documentLayout()->documentSize()));
}

void QTextControl::processEvent(QEvent *e, const QPointF &coordinateOffset, QWidget *contextWidget)
{
    QMatrix m;
    m.translate(coordinateOffset.x(), coordinateOffset.y());
    processEvent(e, m, contextWidget);
}

void QTextControl::processEvent(QEvent *e, const QMatrix &matrix, QWidget *contextWidget)
{

    Q_D(QTextControl);
    if (d->interactionFlags & Qt::NoTextInteraction)
        return;

    d->contextWidget = contextWidget;

    if (!d->contextWidget) {
        switch (e->type()) {
#ifndef QT_NO_GRAPHICSVIEW
            case QEvent::GraphicsSceneMouseMove:
            case QEvent::GraphicsSceneMousePress:
            case QEvent::GraphicsSceneMouseRelease:
            case QEvent::GraphicsSceneMouseDoubleClick:
            case QEvent::GraphicsSceneContextMenu:
            case QEvent::GraphicsSceneHoverEnter:
            case QEvent::GraphicsSceneHoverMove:
            case QEvent::GraphicsSceneHoverLeave:
            case QEvent::GraphicsSceneHelp:
            case QEvent::GraphicsSceneDragEnter:
            case QEvent::GraphicsSceneDragMove:
            case QEvent::GraphicsSceneDragLeave:
            case QEvent::GraphicsSceneDrop: {
                QGraphicsSceneEvent *ev = static_cast<QGraphicsSceneEvent *>(e);
                d->contextWidget = ev->widget();
                break;
            }
#endif // QT_NO_GRAPHICSVIEW
            default: break;
        };
    }

    switch (e->type()) {
        case QEvent::KeyPress:
            d->keyPressEvent(static_cast<QKeyEvent *>(e));
            break;
        case QEvent::MouseButtonPress: {
            QMouseEvent *ev = static_cast<QMouseEvent *>(e);
            d->mousePressEvent(ev->button(), matrix.map(ev->pos()), ev->modifiers(),
                               ev->buttons(), ev->globalPos());
            break; }
        case QEvent::MouseMove: {
            QMouseEvent *ev = static_cast<QMouseEvent *>(e);
            d->mouseMoveEvent(ev->buttons(), matrix.map(ev->pos()));
            break; }
        case QEvent::MouseButtonRelease: {
            QMouseEvent *ev = static_cast<QMouseEvent *>(e);
            d->mouseReleaseEvent(ev->button(), matrix.map(ev->pos()));
            break; }
        case QEvent::MouseButtonDblClick: {
            QMouseEvent *ev = static_cast<QMouseEvent *>(e);
            d->mouseDoubleClickEvent(e, ev->button(), matrix.map(ev->pos()));
            break; }
        case QEvent::InputMethod:
            d->inputMethodEvent(static_cast<QInputMethodEvent *>(e));
            break;
        case QEvent::ContextMenu: {
            QContextMenuEvent *ev = static_cast<QContextMenuEvent *>(e);
            d->contextMenuEvent(ev->globalPos(), matrix.map(ev->pos()), contextWidget);
            break; }

        case QEvent::FocusIn:
        case QEvent::FocusOut:
            d->focusEvent(static_cast<QFocusEvent *>(e));
            break;

        case QEvent::EnabledChange:
            d->isEnabled = e->isAccepted();
            break;

#ifndef QT_NO_TOOLTIP
        case QEvent::ToolTip: {
            QHelpEvent *ev = static_cast<QHelpEvent *>(e);
            d->showToolTip(ev->globalPos(), matrix.map(ev->pos()), contextWidget);
            break;
        }
#endif // QT_NO_TOOLTIP

#ifndef QT_NO_DRAGANDDROP
        case QEvent::DragEnter: {
            QDragEnterEvent *ev = static_cast<QDragEnterEvent *>(e);
            if (d->dragEnterEvent(e, ev->mimeData()))
                ev->acceptProposedAction();
            break;
        }
        case QEvent::DragLeave:
            d->dragLeaveEvent();
            break;
        case QEvent::DragMove: {
            QDragMoveEvent *ev = static_cast<QDragMoveEvent *>(e);
            if (d->dragMoveEvent(e, ev->mimeData(), matrix.map(ev->pos())))
                ev->acceptProposedAction();
            break;
        }
        case QEvent::Drop: {
            QDropEvent *ev = static_cast<QDropEvent *>(e);
            if (d->dropEvent(ev->mimeData(), matrix.map(ev->pos()), ev->proposedAction(), ev->source()))
                ev->acceptProposedAction();
            break;
        }
#endif

#ifndef QT_NO_GRAPHICSVIEW
        case QEvent::GraphicsSceneMousePress: {
            QGraphicsSceneMouseEvent *ev = static_cast<QGraphicsSceneMouseEvent *>(e);
            d->mousePressEvent(ev->button(), matrix.map(ev->pos()), ev->modifiers(), ev->buttons(),
                               ev->screenPos());
            break; }
        case QEvent::GraphicsSceneMouseMove: {
            QGraphicsSceneMouseEvent *ev = static_cast<QGraphicsSceneMouseEvent *>(e);
            d->mouseMoveEvent(ev->buttons(), matrix.map(ev->pos()));
            break; }
        case QEvent::GraphicsSceneMouseRelease: {
            QGraphicsSceneMouseEvent *ev = static_cast<QGraphicsSceneMouseEvent *>(e);
            d->mouseReleaseEvent(ev->button(), matrix.map(ev->pos()));
            break; }
        case QEvent::GraphicsSceneMouseDoubleClick: {
            QGraphicsSceneMouseEvent *ev = static_cast<QGraphicsSceneMouseEvent *>(e);
            d->mouseDoubleClickEvent(e, ev->button(), matrix.map(ev->pos()));
            break; }
        case QEvent::GraphicsSceneContextMenu: {
            QGraphicsSceneContextMenuEvent *ev = static_cast<QGraphicsSceneContextMenuEvent *>(e);
            d->contextMenuEvent(ev->screenPos(), matrix.map(ev->pos()), contextWidget);
            break; }

        case QEvent::GraphicsSceneHoverMove: {
            QGraphicsSceneHoverEvent *ev = static_cast<QGraphicsSceneHoverEvent *>(e);
            d->mouseMoveEvent(Qt::NoButton, matrix.map(ev->pos()));
            break; }

        case QEvent::GraphicsSceneDragEnter: {
            QGraphicsSceneDragDropEvent *ev = static_cast<QGraphicsSceneDragDropEvent *>(e);
            if (d->dragEnterEvent(e, ev->mimeData()))
                ev->acceptProposedAction();
            break; }
        case QEvent::GraphicsSceneDragLeave:
            d->dragLeaveEvent();
            break;
        case QEvent::GraphicsSceneDragMove: {
            QGraphicsSceneDragDropEvent *ev = static_cast<QGraphicsSceneDragDropEvent *>(e);
            if (d->dragMoveEvent(e, ev->mimeData(), matrix.map(ev->pos())))
                ev->acceptProposedAction();
            break; }
        case QEvent::GraphicsSceneDrop: {
            QGraphicsSceneDragDropEvent *ev = static_cast<QGraphicsSceneDragDropEvent *>(e);
            if (d->dropEvent(ev->mimeData(), matrix.map(ev->pos()), ev->proposedAction(), ev->source()))
                ev->acceptProposedAction();
            break; }
#endif // QT_NO_GRAPHICSVIEW
#ifdef QT_KEYPAD_NAVIGATION
        case QEvent::EnterEditFocus:
        case QEvent::LeaveEditFocus:
            if (QApplication::keypadNavigationEnabled())
                d->editFocusEvent(e);
            break;
#endif
        case QEvent::ShortcutOverride:
            if (d->interactionFlags & Qt::TextEditable) {
                QKeyEvent* ke = static_cast<QKeyEvent *>(e);
                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_Return:
                            case Qt::Key_Enter:
                            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;
                        }
                    }
#ifndef QT_NO_SHORTCUT
                } else 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->accept();
#endif
                }
            }
            // FALL THROUGH
        default:
            break;
    }
}

bool QTextControl::event(QEvent *e)
{
    return QObject::event(e);
}

void QTextControl::timerEvent(QTimerEvent *e)
{
    Q_D(QTextControl);
    if (e->timerId() == d->cursorBlinkTimer.timerId()) {
        d->cursorOn = !d->cursorOn;

        if (d->cursor.hasSelection())
            d->cursorOn &= (QApplication::style()->styleHint(QStyle::SH_BlinkCursorWhenTextSelected)
                            != 0);

        d->repaintCursor();
    } else if (e->timerId() == d->trippleClickTimer.timerId()) {
        d->trippleClickTimer.stop();
    }
}

void QTextControl::setPlainText(const QString &text)
{
    Q_D(QTextControl);
    d->setContent(Qt::PlainText, text);
}

void QTextControl::setHtml(const QString &text)
{
    Q_D(QTextControl);
    d->setContent(Qt::RichText, text);
}

void QTextControlPrivate::keyPressEvent(QKeyEvent *e)
{
    Q_Q(QTextControl);
#ifndef QT_NO_SHORTCUT
    if (e == QKeySequence::SelectAll) {
            e->accept();
            q->selectAll();
            return;
    }
#ifndef QT_NO_CLIPBOARD
    else if (e == QKeySequence::Copy) {
            e->accept();
            q->copy();
            return;
    }
#endif
#endif // QT_NO_SHORTCUT

    if (interactionFlags & Qt::TextSelectableByKeyboard
        && cursorMoveKeyEvent(e))
        goto accept;

    if (interactionFlags & Qt::LinksAccessibleByKeyboard) {
        if ((e->key() == Qt::Key_Return
             || e->key() == Qt::Key_Enter
#ifdef QT_KEYPAD_NAVIGATION
             || e->key() == Qt::Key_Select
#endif
             )
            && cursor.hasSelection()) {

            e->accept();
            activateLinkUnderCursor();
            return;
        }
    }

    if (!(interactionFlags & Qt::TextEditable)) {
        e->ignore();
        return;
    }

    if (e->key() == Qt::Key_Direction_L || e->key() == Qt::Key_Direction_R) {
        QTextBlockFormat fmt;
        fmt.setLayoutDirection((e->key() == Qt::Key_Direction_L) ? Qt::LeftToRight : Qt::RightToLeft);
        cursor.mergeBlockFormat(fmt);
        goto accept;
    }

    // schedule a repaint of the region of the cursor, as when we move it we
    // want to make sure the old cursor disappears (not noticeable when moving
    // only a few pixels but noticeable when jumping between cells in tables for
    // example)
    repaintSelection();

    if (e->key() == Qt::Key_Backspace && !(e->modifiers() & ~Qt::ShiftModifier)) {
        QTextBlockFormat blockFmt = cursor.blockFormat();
        QTextList *list = cursor.currentList();
        if (list && cursor.atBlockStart()) {
            list->remove(cursor.block());
        } else if (cursor.atBlockStart() && blockFmt.indent() > 0) {
            blockFmt.setIndent(blockFmt.indent() - 1);
            cursor.setBlockFormat(blockFmt);
        } else {
            cursor.deletePreviousChar();
        }
        goto accept;
    } else if (e->key() == Qt::Key_Enter || e->key() == Qt::Key_Return) {
        if (e->modifiers() & Qt::ControlModifier)
            cursor.insertText(QString(QChar::LineSeparator));
        else
            cursor.insertBlock();
        e->accept();
        goto accept;
    }

    if (false) {
    }
#ifndef QT_NO_SHORTCUT
    else if (e == QKeySequence::Undo) {
            q->undo();
    }
    else if (e == QKeySequence::Redo) {
           q->redo();
    }
#ifndef QT_NO_CLIPBOARD
    else if (e == QKeySequence::Cut) {
           q->cut();
    }
    else if (e == QKeySequence::Paste) {
           q->paste();
    }
#endif
    else if (e == QKeySequence::Delete) {
        cursor.deleteChar();
    }
    else if (e == QKeySequence::DeleteEndOfWord) {
        cursor.movePosition(QTextCursor::EndOfWord, QTextCursor::KeepAnchor);
        cursor.deleteChar();
    }
    else if (e == QKeySequence::DeleteStartOfWord) {
        cursor.movePosition(QTextCursor::PreviousWord, QTextCursor::KeepAnchor);
        cursor.deleteChar();
    }
    else if (e == QKeySequence::DeleteEndOfLine) {
        QTextBlock block = cursor.block();
        if (cursor.position() == block.position() + block.length() - 2)
            cursor.movePosition(QTextCursor::Right, QTextCursor::KeepAnchor);
        else
            cursor.movePosition(QTextCursor::EndOfBlock, QTextCursor::KeepAnchor);
        cursor.deleteChar();
    }
#endif // QT_NO_SHORTCUT
    else {
        goto process;
    }
    goto accept;

process:
    {
        QString text = e->text();
        if (!text.isEmpty() && (text.at(0).isPrint() || text.at(0) == QLatin1Char('\t'))) {
            if (overwriteMode
                // no need to call deleteChar() if we have a selection, insertText
                // does it already
                && !cursor.hasSelection()
                && !cursor.atBlockEnd())
                cursor.deleteChar();

            cursor.insertText(text);
            selectionChanged();
        } else {
            e->ignore();
            return;
        }
    }

 accept:

    e->accept();
    cursorOn = true;

    q->ensureCursorVisible();

    updateCurrentCharFormat();
}

QVariant QTextControl::loadResource(int type, const QUrl &name)
{
#ifdef QT_NO_TEXTEDIT
    Q_UNUSED(type);
    Q_UNUSED(name);
#else
    if (QTextEdit *textEdit = qobject_cast<QTextEdit *>(parent()))