valgrind: code cosmetics

Change-Id: I695c7d40aeb0b0b1e6f8cc0856e5fa5d9d1ce2d1
Reviewed-on: http://codereview.qt.nokia.com/1600
Reviewed-by: hjk <qthjk@ovi.com>

src/plugins/valgrind/callgrind/callgrindcallmodel.cpp

@@ -0,0 +1,239 @@
+/**************************************************************************
+**
+** This file is part of Qt Creator
+**
+** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
+**
+** Contact: Nokia Corporation (info@qt.nokia.com)
+**
+**
+** GNU Lesser General Public License Usage
+**
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this file.
+** Please review the following information to ensure the GNU Lesser General
+** Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** Other Usage
+**
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at info@qt.nokia.com.
+**
+**************************************************************************/
+
+#include "callgrindcallmodel.h"
+
+#include "callgrindfunctioncall.h"
+#include "callgrindfunction.h"
+#include "callgrindparsedata.h"
+
+#include <utils/qtcassert.h>
+
+#include <QVector>
+
+namespace Valgrind {
+namespace Callgrind {
+
+//BEGIN CallModel::Private
+
+class CallModel::Private
+{
+public:
+    Private();
+
+    const ParseData *m_data;
+    QVector<const FunctionCall *> m_calls;
+    int m_event;
+    const Function *m_function;
+};
+
+CallModel::Private::Private()
+    : m_data(0)
+    , m_event(0)
+    , m_function(0)
+{
+}
+
+//END CallModel::Private
+
+//BEGIN CallModel
+CallModel::CallModel(QObject *parent)
+  : QAbstractItemModel(parent), d(new Private)
+{
+}
+
+CallModel::~CallModel()
+{
+    delete d;
+}
+
+void CallModel::clear()
+{
+    beginResetModel();
+    d->m_function = 0;
+    d->m_calls.clear();
+    endResetModel();
+}
+
+void CallModel::setCalls(const QVector<const FunctionCall *> &calls, const Function *function)
+{
+    beginResetModel();
+    d->m_function = function;
+    d->m_calls = calls;
+    endResetModel();
+}
+
+QVector<const FunctionCall *> CallModel::calls() const
+{
+    return d->m_calls;
+}
+
+const Function *CallModel::function() const
+{
+    return d->m_function;
+}
+
+void CallModel::setCostEvent(int event)
+{
+    d->m_event = event;
+}
+
+int CallModel::costEvent() const
+{
+    return d->m_event;
+}
+
+void CallModel::setParseData(const ParseData *data)
+{
+    if (d->m_data == data)
+        return;
+
+    if (!data)
+        clear();
+
+    d->m_data = data;
+}
+
+const ParseData *CallModel::parseData() const
+{
+    return d->m_data;
+}
+
+int CallModel::rowCount(const QModelIndex &parent) const
+{
+    QTC_ASSERT(!parent.isValid() || parent.model() == this, return 0);
+
+    if (parent.isValid())
+        return 0;
+
+    return d->m_calls.count();
+}
+
+int CallModel::columnCount(const QModelIndex &parent) const
+{
+    QTC_ASSERT(!parent.isValid() || parent.model() == this, return 0);
+
+    if (parent.isValid())
+        return 0;
+
+    return ColumnCount;
+}
+
+QModelIndex CallModel::parent(const QModelIndex &child) const
+{
+    QTC_ASSERT(!child.isValid() || child.model() == this, return QModelIndex());
+
+    return QModelIndex();
+}
+
+QModelIndex CallModel::index(int row, int column, const QModelIndex &parent) const
+{
+    QTC_ASSERT(!parent.isValid() || parent.model() == this, return QModelIndex());
+
+    if (row == 0 && rowCount(parent) == 0) // happens with empty models
+        return QModelIndex();
+
+    QTC_ASSERT(row >= 0 && row < rowCount(parent), return QModelIndex());
+
+    return createIndex(row, column);
+}
+
+QVariant CallModel::data(const QModelIndex &index, int role) const
+{
+    QTC_ASSERT(index.isValid() && index.model() == this, return QVariant());
+    QTC_ASSERT(index.column() >= 0 && index.column() < columnCount(index.parent()), return QVariant());
+    QTC_ASSERT(index.row() >= 0 && index.row() < rowCount(index.parent()), return QVariant());
+
+    const FunctionCall *call = d->m_calls.at(index.row());
+    const quint64 callCost = call->cost(d->m_event);
+    const quint64 parentCost = d->m_function->inclusiveCost(d->m_event);
+    if (role == ParentCostRole) {
+        return parentCost;
+    }
+    else if (role == FunctionCallRole
+                || role == RelativeParentCostRole || role == RelativeTotalCostRole) {
+        if (role == FunctionCallRole)
+            return QVariant::fromValue(call);
+
+        if (role == RelativeTotalCostRole) {
+            const quint64 totalCost = d->m_data->totalCost(d->m_event);
+            return (float) callCost / totalCost;
+        }
+
+        if (role == RelativeParentCostRole)
+            return (float) callCost / parentCost;
+    }
+    else if (role == Qt::DisplayRole || role == Qt::ToolTipRole) {
+        if (index.column() == CalleeColumn)
+            return call->callee()->name();
+        else if (index.column() == CallerColumn)
+            return call->caller()->name();
+        else if (index.column() == CostColumn && role != Qt::ToolTipRole)
+            return callCost;
+        else if (index.column() == CallsColumn && role != Qt::ToolTipRole)
+            return call->calls();
+    }
+
+    return QVariant();
+}
+
+QVariant CallModel::headerData(int section, Qt::Orientation orientation, int role) const
+{
+    if (orientation == Qt::Vertical || (role != Qt::DisplayRole && role != Qt::ToolTipRole))
+        return QVariant();
+
+    QTC_ASSERT(section >= 0 && section < columnCount(), return QVariant());
+
+    if (role == Qt::ToolTipRole) {
+        if (section == CostColumn) {
+            if (!d->m_data)
+                return QVariant();
+
+            return ParseData::prettyStringForEvent(d->m_data->events().at(d->m_event));
+        }
+        return QVariant();
+    }
+
+    if (section == CalleeColumn)
+        return tr("Callee");
+    else if (section == CallerColumn)
+        return tr("Caller");
+    else if (section == CostColumn)
+        return tr("Cost");
+    else if (section == CallsColumn)
+        return tr("Calls");
+
+    return QVariant();
+}
+
+} // namespace Callgrind
+} // namespace Valgrind