graphwidget.cpp

来自「linux下的sourceinsight」· C++ 代码 · 共 1,163 行 · 第 1/3 页

 * This menu is shown after an edge has been right-clicked.
 * @param	pEdge	The edge for which to show the menu
 * @param	ptPos	The position of the menu 
 */
void GraphWidget::showEdgeMenu(GraphEdge* pEdge, const QPoint& ptPos)
{
	// Remember the edge
	m_pMenuItem = pEdge;
	
	// Show the popup menu.
	m_pEdgePopup->popup(ptPos);
}

/**
 * Redraws the widget when new instructions are available.
 * This slot is connected to the finished() signal emitted by the dot front-
 * end.
 */
void GraphWidget::slotDotFinished()
{
	// Delete the temporary file
	if (m_sDrawFilePath != "") {
		QFile::remove(m_sDrawFilePath);
		m_sDrawFilePath = "";
	}
	
	// Delete the progress dialogue
	if (m_pProgressDlg) {
		delete m_pProgressDlg;
		m_pProgressDlg = NULL;
	}
	
	setUpdatesEnabled(true);
	canvas()->update();
}

/**
 * Adds an entry to the tree, as the child of the active item.
 * Called by a CscopeFrontend object, when a new entry was received in its
 * whole from the Cscope back-end process. The entry contains the data of a
 * function calling the function described by the active item.
 * @param	pToken	The first token in the entry
 */
void GraphWidget::slotDataReady(FrontendToken* pToken)
{
	CallData data;
	QString sFunc;
	
	// Get the file name
	data.m_sFile = pToken->getData();
	pToken = pToken->getNext();

	// Get the function name
	sFunc = pToken->getData();
	pToken = pToken->getNext();

	// Get the line number (do not accept global information on a call tree)
	data.m_sLine = pToken->getData();
	if (data.m_sLine.toUInt() == 0)
		return;
		
	pToken = pToken->getNext();

	// Get the line's text
	data.m_sText = pToken->getData();
		
	// Determine the caller and the callee
	if (m_bCalled) {
		data.m_sCaller = m_sQueriedFunc;
		data.m_sCallee = sFunc;
	}
	else {
		data.m_sCaller = sFunc;
		data.m_sCallee = m_sQueriedFunc;
	}
		
	// Add the call to the graph
	addCall(data);
}

/**
 * Displays search progress information.
 * This slot is connected to the progress() signal emitted by a
 * CscopeFrontend object.
 * @param	nProgress	The current progress value
 * @param	nTotal		The expected final value
 */
void GraphWidget::slotProgress(int nProgress, int nTotal)
{
	m_progress.setProgress(nProgress, nTotal);
}

/**
 * Disables the expandability feature of an item, if no functions calling it
 * were found.
 * @param	nRecords	Number of records reported by the query
 */
void GraphWidget::slotFinished(uint /*nRecords*/)
{
	// Destroy the progress bar
	m_progress.finished();
		
	// Redraw the graph
	draw();
}

/**
 * Adds a multiple call node when a query results in too many entries.
 * This slot is attached to the aborted() signal of the Cscope process.
 */
void GraphWidget::slotAborted()
{	
	KMessageBox::information(this, i18n("The query produced too many results.\n"
		"A multiple-call node will appear in the graph instead.\n"
		"Hint: The maximum number of in/out edges\n"
		"can be adjusted by clicking the dialogue's \"Preferences\" button"));
	
	addMultiCall(m_sQueriedFunc, m_bCalled);
	draw();
}

/**
 * Shows functions called from the current function node.
 * This slot is connected to the "Show Called Functions" popup menu
 * action.
 */
void GraphWidget::slotShowCalled()
{
	GraphNode* pNode;
	
	// Make sure the menu item is a node
	pNode = dynamic_cast<GraphNode*>(m_pMenuItem);
	if (pNode == NULL)
		return;
	
	// Run a query for called functions
	m_sQueriedFunc = pNode->getFunc();
	m_bCalled = true;
	m_pCscope->query(CscopeFrontend::Called, m_sQueriedFunc, true,
		Config().getGraphMaxNodeDegree());
}

/**
 * Shows a list of function calls from the current node.
 * The list is displayed in a query dialogue. The user can the select which
 * calls should be displayed in the graph.
 * This slot is connected to the "List Called Functions" popup menu
 * action.
 */
void GraphWidget::slotListCalled()
{
	GraphNode* pNode;

	// Make sure the menu item is a node
	pNode = dynamic_cast<GraphNode*>(m_pMenuItem);
	if (pNode == NULL)
		return;
	
	QueryViewDlg dlg(0, (QWidget*)parent());
	
	// Show the query view dialogue
	dlg.query(CscopeFrontend::Called, pNode->getFunc());
	if (dlg.exec() != QDialog::Accepted)
		return;
		
	// The OK button was clicked, replace current calls with the listed ones
	pNode->removeOutEdges();
	
	QueryView::Iterator itr;
	CallData data;
	
	data.m_sCaller = pNode->getFunc();
	
	// Add all listed calls
	for (itr = dlg.getIterator(); !itr.isEOF(); itr.next()) {
		data.m_sCallee = itr.getFunc();
		data.m_sFile = itr.getFile();
		data.m_sLine = itr.getLine();
		data.m_sText = itr.getText();
		
		addCall(data);
	}
	
	// Clean-up and redraw the graph
	removeDisconnected(pNode);
	draw();
}

/**
 * Hides functions called from the current function node.
 * This slot is connected to the "Hide Called Functions" popup menu
 * action.
 */
void GraphWidget::slotHideCalled()
{
	GraphNode* pNode;
	
	// Make sure the menu item is a node
	pNode = dynamic_cast<GraphNode*>(m_pMenuItem);
	if (pNode == NULL)
		return;
	
	// Remove edges and redraw the graph
	removeEdges(pNode, true);
	draw();
}

/**
 * Shows functions calling tothe current function node.
 * This slot is connected to the "Show Calling Functions" popup menu
 * action.
 */
void GraphWidget::slotShowCalling()
{
	GraphNode* pNode;
	
	// Make sure the menu item is a node
	pNode = dynamic_cast<GraphNode*>(m_pMenuItem);
	if (pNode == NULL)
		return;
	
	// Run a query for called functions
	m_sQueriedFunc = pNode->getFunc();
	m_bCalled = false;
	m_pCscope->query(CscopeFrontend::Calling, m_sQueriedFunc, true,
		Config().getGraphMaxNodeDegree());
}

/**
 * Shows a list of function calls to the current node.
 * The list is displayed in a query dialogue. The user can the select which
 * calls should be displayed in the graph.
 * This slot is connected to the "List Calling Functions" popup menu
 * action.
 */
void GraphWidget::slotListCalling()
{
	GraphNode* pNode;
	
	// Make sure the menu item is a node
	pNode = dynamic_cast<GraphNode*>(m_pMenuItem);
	if (pNode == NULL)
		return;
	
	QueryViewDlg dlg(0, (QWidget*)parent());
	
	// Show the query view dialogue
	dlg.query(CscopeFrontend::Calling, pNode->getFunc());
	if (dlg.exec() != QDialog::Accepted)
		return;
		
	// The OK button was clicked, replace current calls with the listed ones
	pNode->removeInEdges();
	
	QueryView::Iterator itr;
	CallData data;
	
	data.m_sCallee = pNode->getFunc();
	
	// Add all listed calls
	for (itr = dlg.getIterator(); !itr.isEOF(); itr.next()) {
		data.m_sCaller = itr.getFunc();
		data.m_sFile = itr.getFile();
		data.m_sLine = itr.getLine();
		data.m_sText = itr.getText();
		
		addCall(data);
	}
	
	// Clean-up and redraw the graph
	removeDisconnected(pNode);
	draw();
}

/**
 * Hides functions calling to the current function node.
 * This slot is connected to the "Hide CallingFunctions" popup menu
 * action.
 */
void GraphWidget::slotHideCalling()
{
	GraphNode* pNode;
	
	// Make sure the menu item is a node
	pNode = dynamic_cast<GraphNode*>(m_pMenuItem);
	if (pNode == NULL)
		return;
	
	// Remove edges and redraw the graph
	removeEdges(pNode, false);
	draw();
}

/**
 * Looks up the definition of the current function node.
 * This slot is connected to the "Find Definition" popup menu action.
 */
void GraphWidget::slotFindDef()
{
	GraphNode* pNode;
	QueryViewDlg* pDlg;
	
	// Make sure the menu item is a node
	pNode = dynamic_cast<GraphNode*>(m_pMenuItem);
	if (pNode == NULL)
		return;
	
	// Create a query view dialogue
	pDlg = new QueryViewDlg(QueryViewDlg::DestroyOnSelect, this);
	
	// Display a line when it is selected in the dialogue
	connect(pDlg, SIGNAL(lineRequested(const QString&, uint)), this,
		SIGNAL(lineRequested(const QString&, uint)));
		
	// Start the query
	pDlg->query(CscopeFrontend::Definition, pNode->getFunc());
}

/**
 * Deletes a node from the graph (alogn with all edges connected to this 
 * node).
 * The node removed is the one over which the context menu was invoked.
 * This slot is connected to the "Remove" popup menu action.
 */
void GraphWidget::slotRemoveNode()
{
	GraphNode* pNode;
	
	// Make sure the menu item is a node
	pNode = dynamic_cast<GraphNode*>(m_pMenuItem);
	if (pNode == NULL)
		return;
	
	// Remove all incoming edges
	pNode->removeInEdges();
	
	// Remove the node (also deletes the object and its outgoing edges)
	m_dictNodes.remove(pNode->getFunc());
	
	// Redraw the graph
	draw();
}

/**
 * Shows the list of calls that is represented by a single multi-call node.
 * This slot handles the "Details..." command of the multi-call node menu.
 */
void GraphWidget::slotMultiCallDetails()
{
	GraphNode* pNode, * pParent;
	bool bCalled;
	
	// Make sure the menu item is a node
	pNode = dynamic_cast<GraphNode*>(m_pMenuItem);
	if (pNode == NULL || !pNode->isMultiCall())
		return;
	
	// Get the required information from the node
	pNode->getFirstNeighbour(pParent, bCalled);
	if (!pParent)
		return;
		
	QueryViewDlg dlg(0, (QWidget*)parent());
	
	dlg.query(bCalled ? CscopeFrontend::Calling : CscopeFrontend::Called, 
		pParent->getFunc());
	dlg.exec();
}

/**
 * Emits a signal to open an editor at the file and line matching the call
 * information of the current edge.
 * This slot is connected to the "Open Call" popup menu action (for edges).
 */
void GraphWidget::slotOpenCall()
{
	GraphEdge* pEdge;
	QString sFile, sLine;
	
	// Make sure the menu item is an edge
	pEdge = dynamic_cast<GraphEdge*>(m_pMenuItem);
	if (pEdge != NULL && pEdge->getFile() != "")
		emit lineRequested(pEdge->getFile(), pEdge->getLine());
}

#include "graphwidget.moc"