Debugger: Split inspector plugin into a qtquick1 and a qtquick2 plugin

This allows the inspector to be used also when e.g. qtquick1 and widgets libraries
are not available.

Change-Id: Id8510ea2a1a9c2a776d67e6d7732a4e40363d5a3
Reviewed-by: Aurindam Jana <aurindam.jana@nokia.com>

1 files changed, 332 insertions, 0 deletions

diff --git a/src/plugins/qmltooling/qmldbg_qtquick2/sgviewinspector.cpp b/src/plugins/qmltooling/qmldbg_qtquick2/sgviewinspector.cpp
new file mode 100644
index 0000000000..06eb6eac97
--- /dev/null
+++ b/src/plugins/qmltooling/qmldbg_qtquick2/sgviewinspector.cpp
@@ -0,0 +1,332 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtDeclarative module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file. Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** 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.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "sgviewinspector.h"
+
+#include "qdeclarativeinspectorprotocol.h"
+#include "sghighlight.h"
+#include "sgselectiontool.h"
+
+#include <QtDeclarative/private/qquickitem_p.h>
+
+#include <QtDeclarative/QQuickView>
+#include <QtDeclarative/QQuickItem>
+
+#include <cfloat>
+
+namespace QmlJSDebugger {
+namespace QtQuick2 {
+
+/*
+ * Collects all the items at the given position, from top to bottom.
+ */
+static void collectItemsAt(QQuickItem *item, const QPointF &pos, QQuickItem *overlay,
+                           QList<QQuickItem *> &resultList)
+{
+    if (item == overlay)
+        return;
+
+    if (item->flags() & QQuickItem::ItemClipsChildrenToShape) {
+        if (!QRectF(0, 0, item->width(), item->height()).contains(pos))
+            return;
+    }
+
+    QList<QQuickItem *> children = QQuickItemPrivate::get(item)->paintOrderChildItems();
+    for (int i = children.count() - 1; i >= 0; --i) {
+        QQuickItem *child = children.at(i);
+        collectItemsAt(child, item->mapToItem(child, pos), overlay, resultList);
+    }
+
+    if (!QRectF(0, 0, item->width(), item->height()).contains(pos))
+        return;
+
+    resultList.append(item);
+}
+
+/*
+ * Returns the first visible item at the given position, or 0 when no such
+ * child exists.
+ */
+static QQuickItem *itemAt(QQuickItem *item, const QPointF &pos, QQuickItem *overlay)
+{
+    if (item == overlay)
+        return 0;
+
+    if (!item->isVisible() || item->opacity() == 0.0)
+        return 0;
+
+    if (item->flags() & QQuickItem::ItemClipsChildrenToShape) {
+        if (!QRectF(0, 0, item->width(), item->height()).contains(pos))
+            return 0;
+    }
+
+    QList<QQuickItem *> children = QQuickItemPrivate::get(item)->paintOrderChildItems();
+    for (int i = children.count() - 1; i >= 0; --i) {
+        QQuickItem *child = children.at(i);
+        if (QQuickItem *betterCandidate = itemAt(child, item->mapToItem(child, pos), overlay))
+            return betterCandidate;
+    }
+
+    if (!(item->flags() & QQuickItem::ItemHasContents))
+        return 0;
+
+    if (!QRectF(0, 0, item->width(), item->height()).contains(pos))
+        return 0;
+
+    return item;
+}
+
+
+SGViewInspector::SGViewInspector(QQuickView *view, QObject *parent) :
+    AbstractViewInspector(parent),
+    m_view(view),
+    m_overlay(new QQuickItem),
+    m_selectionTool(new SGSelectionTool(this)),
+    m_designMode(true)
+{
+    // Try to make sure the overlay is always on top
+    m_overlay->setZ(FLT_MAX);
+
+    if (QQuickItem *root = view->rootItem())
+        m_overlay->setParentItem(root);
+
+    view->installEventFilter(this);
+    setCurrentTool(m_selectionTool);
+}
+
+void SGViewInspector::changeCurrentObjects(const QList<QObject*> &objects)
+{
+    QList<QQuickItem*> items;
+    foreach (QObject *obj, objects)
+        if (QQuickItem *item = qobject_cast<QQuickItem*>(obj))
+            items << item;
+
+    syncSelectedItems(items);
+}
+
+void SGViewInspector::reloadView()
+{
+    // TODO
+    emit reloadRequested();
+}
+
+void SGViewInspector::reparentQmlObject(QObject *object, QObject *newParent)
+{
+    if (!newParent)
+        return;
+
+    object->setParent(newParent);
+    QQuickItem *newParentItem = qobject_cast<QQuickItem*>(newParent);
+    QQuickItem *item = qobject_cast<QQuickItem*>(object);
+    if (newParentItem && item)
+        item->setParentItem(newParentItem);
+}
+
+void SGViewInspector::changeTool(InspectorProtocol::Tool tool)
+{
+    switch (tool) {
+    case InspectorProtocol::ColorPickerTool:
+        // TODO
+        emit colorPickerActivated();
+        break;
+    case InspectorProtocol::SelectMarqueeTool:
+        // TODO
+        emit marqueeSelectToolActivated();
+        break;
+    case InspectorProtocol::SelectTool:
+        setCurrentTool(m_selectionTool);
+        emit selectToolActivated();
+        break;
+    case InspectorProtocol::ZoomTool:
+        // TODO
+        emit zoomToolActivated();
+        break;
+    }
+}
+
+QWindow *getMasterWindow(QWindow *w)
+{
+    QWindow *p = w->parent();
+    while (p) {
+        w = p;
+        p = p->parent();
+    }
+    return w;
+}
+
+Qt::WindowFlags SGViewInspector::windowFlags() const
+{
+    return getMasterWindow(m_view)->windowFlags();
+}
+
+void SGViewInspector::setWindowFlags(Qt::WindowFlags flags)
+{
+    QWindow *w = getMasterWindow(m_view);
+    w->setWindowFlags(flags);
+    // make flags are applied
+    w->setVisible(false);
+    w->setVisible(true);
+}
+
+QDeclarativeEngine *SGViewInspector::declarativeEngine() const
+{
+    return m_view->engine();
+}
+
+QQuickItem *SGViewInspector::topVisibleItemAt(const QPointF &pos) const
+{
+    QQuickItem *root = m_view->rootItem();
+    return itemAt(root, root->mapFromScene(pos), m_overlay);
+}
+
+QList<QQuickItem *> SGViewInspector::itemsAt(const QPointF &pos) const
+{
+    QQuickItem *root = m_view->rootItem();
+    QList<QQuickItem *> resultList;
+    collectItemsAt(root, root->mapFromScene(pos), m_overlay, resultList);
+    return resultList;
+}
+
+QList<QQuickItem*> SGViewInspector::selectedItems() const
+{
+    QList<QQuickItem *> selection;
+    foreach (const QWeakPointer<QQuickItem> &selectedItem, m_selectedItems) {
+        if (selectedItem)
+            selection << selectedItem.data();
+    }
+    return selection;
+}
+
+void SGViewInspector::setSelectedItems(const QList<QQuickItem *> &items)
+{
+    if (!syncSelectedItems(items))
+        return;
+
+    QList<QObject*> objectList;
+    foreach (QQuickItem *item, items)
+        objectList << item;
+
+    sendCurrentObjects(objectList);
+}
+
+bool SGViewInspector::syncSelectedItems(const QList<QQuickItem *> &items)
+{
+    bool selectionChanged = false;
+
+    // Disconnect and remove items that are no longer selected
+    foreach (const QWeakPointer<QQuickItem> &item, m_selectedItems) {
+        if (!item) // Don't see how this can happen due to handling of destroyed()
+            continue;
+        if (items.contains(item.data()))
+            continue;
+
+        selectionChanged = true;
+        item.data()->disconnect(this);
+        m_selectedItems.removeOne(item);
+        delete m_highlightItems.take(item.data());
+    }
+
+    // Connect and add newly selected items
+    foreach (QQuickItem *item, items) {
+        if (m_selectedItems.contains(item))
+            continue;
+
+        selectionChanged = true;
+        connect(item, SIGNAL(destroyed(QObject*)), this, SLOT(removeFromSelectedItems(QObject*)));
+        m_selectedItems.append(item);
+        m_highlightItems.insert(item, new SGSelectionHighlight(item, m_overlay));
+    }
+
+    return selectionChanged;
+}
+
+void SGViewInspector::removeFromSelectedItems(QObject *object)
+{
+    if (QQuickItem *item = qobject_cast<QQuickItem*>(object)) {
+        if (m_selectedItems.removeOne(item))
+            delete m_highlightItems.take(item);
+    }
+}
+
+bool SGViewInspector::eventFilter(QObject *obj, QEvent *event)
+{
+    if (obj != m_view)
+        return QObject::eventFilter(obj, event);
+
+    return AbstractViewInspector::eventFilter(obj, event);
+}
+
+bool SGViewInspector::mouseMoveEvent(QMouseEvent *event)
+{
+    // TODO
+//    if (QQuickItem *item = topVisibleItemAt(event->pos()))
+//        m_view->setToolTip(titleForItem(item));
+//    else
+//        m_view->setToolTip(QString());
+
+    return AbstractViewInspector::mouseMoveEvent(event);
+}
+
+QString SGViewInspector::titleForItem(QQuickItem *item) const
+{
+    QString className = QLatin1String(item->metaObject()->className());
+    QString objectStringId = idStringForObject(item);
+
+    className.remove(QRegExp(QLatin1String("_QMLTYPE_\\d+")));
+    className.remove(QRegExp(QLatin1String("_QML_\\d+")));
+    if (className.startsWith(QLatin1String("QQuick")))
+        className = className.mid(6);
+
+    QString constructedName;
+
+    if (!objectStringId.isEmpty()) {
+        constructedName = objectStringId + QLatin1String(" (") + className + QLatin1Char(')');
+    } else if (!item->objectName().isEmpty()) {
+        constructedName = item->objectName() + QLatin1String(" (") + className + QLatin1Char(')');
+    } else {
+        constructedName = className;
+    }
+
+    return constructedName;
+}
+
+} // namespace QtQuick2
+} // namespace QmlJSDebugger