contextkeymanager.cpp

Trolltech公司发布的图形界面操作系统。可在qt-embedded-2.3.10平台上编译为嵌入式图形界面操作系统。

	KeyMap::Iterator it = (*wit).find(key);
	if (it != (*wit).end()) {
	    if ((*it).type(modal) != ModalState::NoLabel)
		return w;
	}
    }

    // Next see if key is set for the class (must accept focus)
    if (w->focusPolicy() != QWidget::NoFocus) {
	QValueList<ClassModalState>::Iterator cit;
	for (cit = contextClass.begin(); cit != contextClass.end(); ++cit) {
	    if (w->inherits((*cit).className)) {
		KeyMap::Iterator it = (*cit).keyMap.find(key);
		if (it != (*cit).keyMap.end()) {
		    if ((*it).type(modal) != ModalState::NoLabel)
			return w;
		}
	    }
	}
    }

    // otherwise try our parent
    if (w->parentWidget() && !w->isTopLevel())
	return findTargetWidget(w->parentWidget(), key, FALSE);

    // No one has claimed this key.
    return 0;
}

bool ContextKeyManager::haveLabelForWidget(QWidget *w, int key, bool modal)
{
    if (buttons.count()) {
	QMap<QWidget*,KeyMap>::Iterator wit = contextWidget.find(w);
	if (wit != contextWidget.end()) {
	    KeyMap::Iterator it = (*wit).find(key);
	    if (it != (*wit).end()) {
		if ((*it).type(modal) != ModalState::NoLabel)
		    return TRUE;
	    }
	}
    }

    return FALSE;
}

void ContextKeyManager::setContextText(QWidget *w, int key, const QString &t, ContextBar::EditingState state)
{
    if (!contextWidget.contains(w))
	connect(w, SIGNAL(destroyed()), this, SLOT(removeSenderFromWidgetContext()));

    KeyMap &keyMap = contextWidget[w];
    ModalState &ms = keyMap[key];
    if (state & ContextBar::Modal) {
	ms.mType = ModalState::Custom;
	ms.mText = t;
    }
    if (state & ContextBar::NonModal) {
	ms.nmType = ModalState::Custom;
	ms.nmText = t;
    }
    updateContextLabels();
}

void ContextKeyManager::setContextPixmap(QWidget *w, int key, const QString &t, ContextBar::EditingState state)
{
    if (!contextWidget.contains(w))
	connect(w, SIGNAL(destroyed()), this, SLOT(removeSenderFromWidgetContext()));

    KeyMap &keyMap = contextWidget[w];
    ModalState &ms = keyMap[key];
    if (state & ContextBar::Modal) {
	ms.mType = ModalState::Custom;
	ms.mPixmap = t;
    }
    if (state & ContextBar::NonModal) {
	ms.nmType = ModalState::Custom;
	ms.nmPixmap = t;
    }
    updateContextLabels();
}

void ContextKeyManager::setContextStandardLabel(QWidget *w, int key, ContextBar::StandardLabel label, ContextBar::EditingState state)
{
    if (!contextWidget.contains(w))
	connect(w, SIGNAL(destroyed()), this, SLOT(removeSenderFromWidgetContext()));

    KeyMap &keyMap = contextWidget[w];
    ModalState &ms = keyMap[key];
    if (state & ContextBar::Modal) {
	ms.mType = ModalState::Standard;
	ms.mStandard = label;
    }
    if (state & ContextBar::NonModal) {
	ms.nmType = ModalState::Standard;
	ms.nmStandard = label;
    }
    updateContextLabels();
}


void ContextKeyManager::clearContextLabel(QWidget *w, int key, ContextBar::EditingState state)
{
    KeyMap &keyMap = contextWidget[w];
    ModalState &ms = keyMap[key];
    if (state & ContextBar::Modal) {
	ms.mType = ModalState::NoLabel;
    }
    if (state & ContextBar::NonModal) {
	ms.nmType = ModalState::NoLabel;
    }
    updateContextLabels();
}

void ContextKeyManager::setClassText(const QCString &className, int key, const QString &t, ContextBar::EditingState state)
{
    ClassModalState cms(className);

    QValueList<ClassModalState>::Iterator it = contextClass.find(cms);
    if (it == contextClass.end())
	it = contextClass.prepend(cms);

    ModalState &ms = (*it).keyMap[key];
    if (state & ContextBar::Modal) {
	ms.mType = ModalState::Custom;
	ms.mText = t;
    }
    if (state & ContextBar::NonModal) {
	ms.nmType = ModalState::Custom;
	ms.nmText = t;
    }
}

void ContextKeyManager::setClassPixmap(const QCString &className, int key, const QString &t, ContextBar::EditingState state)
{
    ClassModalState cms(className);

    QValueList<ClassModalState>::Iterator it = contextClass.find(cms);
    if (it == contextClass.end())
	it = contextClass.prepend(cms);

    ModalState &ms = (*it).keyMap[key];
    if (state & ContextBar::Modal) {
	ms.mType = ModalState::Custom;
	ms.mPixmap = t;
    }
    if (state & ContextBar::NonModal) {
	ms.nmType = ModalState::Custom;
	ms.nmPixmap = t;
    }
}

void ContextKeyManager::setClassStandardLabel(const QCString &className, int key, ContextBar::StandardLabel label, ContextBar::EditingState state)
{
    ClassModalState cms(className);

    QValueList<ClassModalState>::Iterator it = contextClass.find(cms);
    if (it == contextClass.end())
	it = contextClass.prepend(cms);

    ModalState &ms = (*it).keyMap[key];
    if (state & ContextBar::Modal) {
	ms.mType = ModalState::Standard;
	ms.mStandard = label;
    }
    if (state & ContextBar::NonModal) {
	ms.nmType = ModalState::Standard;
	ms.nmStandard = label;
    }
}

void ContextKeyManager::removeSenderFromWidgetContext()
{
    if ( contextWidget.contains((QWidget*)sender() )) {
	QWidget *w = (QWidget*)sender();
#ifdef DEBUG_CONTEXT_KEYS
	qDebug("Removing context widget: %s(%p)", w->className(), w);
#endif
	contextWidget.remove(w);
	updateContextLabels();
    }
}

ContextKeyManager *ContextKeyManager::instance()
{
    if (!contextKeyMgr)
	contextKeyMgr = new ContextKeyManager();

    return contextKeyMgr;
}

void ContextKeyManager::setStandard(int key, ContextBar::StandardLabel label)
{
    QString l = standardPixmap(label);
    if (!!l)
	setPixmap(key, l);
    else
	setText(key, standardText(label));
}

void ContextKeyManager::setText(int key, const QString &text)
{
    QCopEnvelope e( "QPE/ContextBar", "setLabelText(int,QString)");
    e << key;
    e << text;
}

void ContextKeyManager::setPixmap(int key, const QString &pm)
{
    QCopEnvelope e( "QPE/ContextBar", "setLabelPixmap(int,QString)");
    e << key;
    e << pm;
}

void ContextKeyManager::clearLabel(int key)
{
    QCopEnvelope e( "QPE/ContextBar", "clearLabel(int)");
    e << key;
}

QString ContextKeyManager::standardText(ContextBar::StandardLabel l)
{
    switch (l) {
	case ContextBar::NoLabel:
	    return "";
	case ContextBar::Options:
	    return tr("Options");
	case ContextBar::Ok:
	    return tr("OK");
	case ContextBar::Edit:
	    return tr("Edit");
	case ContextBar::Select:
	    return tr("Select");
	case ContextBar::View:
	    return tr("View");
	case ContextBar::Cancel:
	    return tr("Cancel");
	case ContextBar::Back:
	    return tr("Back");
	case ContextBar::BackSpace:
	    return tr("Delete");
	case ContextBar::Next:
	    return tr("Next");
	case ContextBar::Previous:
	    return tr("Prev");
	default:
	    return QString::null;
    }
}

QString ContextKeyManager::standardPixmap(ContextBar::StandardLabel l)
{
    switch (l) {
	case ContextBar::NoLabel:
	    return "";
	case ContextBar::Options:
	    return "contextbar/options";
	case ContextBar::Back:
	    return "contextbar/back";
	case ContextBar::Cancel:
	    return "contextbar/cancel";
	case ContextBar::Ok:
	    return "contextbar/ok";
	case ContextBar::Edit:
	    return "contextbar/edit";
	case ContextBar::Select:
	    return "contextbar/select";
	case ContextBar::View:
	    return "contextbar/view";
	case ContextBar::BackSpace:
	    return "contextbar/backspace";
	case ContextBar::Next:
	    return "contextbar/next";
	case ContextBar::Previous:
	    return "contextbar/previous";
	default:
	    return QString::null;
    }
}