Say hello to QtQuick module

This change moves the QtQuick 2 types and C++ API (including
SceneGraph) to a new module (AKA library), QtQuick.

99% of this change is moving files from src/declarative to
src/quick, and from tests/auto/declarative to
tests/auto/qtquick2.

The loading of QtQuick 2 ("import QtQuick 2.0") is now delegated to
a plugin, src/imports/qtquick2, just like it's done for QtQuick 1.

All tools, examples, and tests that use QtQuick C++ API have gotten
"QT += quick" or "QT += quick-private" added to their .pro file.

A few additional internal QtDeclarative classes had to be exported
(via Q_DECLARATIVE_PRIVATE_EXPORT) since they're needed by the
QtQuick 2 implementation.

The old header locations (e.g. QtDeclarative/qquickitem.h) will
still be supported for some time, but will produce compile-time
warnings. (To avoid the QtQuick implementation using the
compatibility headers (since QtDeclarative's includepath comes
first), a few include statements were modified, e.g. from
"#include <qsgnode.h>" to "#include <QtQuick/qsgnode.h>".)

There's a change in qtbase that automatically adds QtQuick to the
module list if QtDeclarative is used. Together with the compatibility
headers, this should help reduce the migration pain for existing
projects.

In theory, simply getting an existing QtDeclarative-based project
to compile and link shouldn't require any changes for now -- but
porting to the new scheme is of course recommended, and will
eventually become mandatory.

Task-number: QTBUG-22889
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
Change-Id: Ia52be9373172ba2f37e7623231ecb060316c96a7
Reviewed-by: Kent Hansen <kent.hansen@nokia.com>
Reviewed-by: Sergio Ahumada <sergio.ahumada@nokia.com>

3 files changed, 562 insertions, 0 deletions

diff --git a/src/quick/designer/designer.pri b/src/quick/designer/designer.pri
new file mode 100644
index 0000000000..c523525977
--- /dev/null
+++ b/src/quick/designer/designer.pri
@@ -0,0 +1,2 @@
+HEADERS +=  designer/designersupport.h
+SOURCES +=  designer/designersupport.cpp
diff --git a/src/quick/designer/designersupport.cpp b/src/quick/designer/designersupport.cpp
new file mode 100644
index 0000000000..04a176f511
--- /dev/null
+++ b/src/quick/designer/designersupport.cpp
@@ -0,0 +1,408 @@
+/****************************************************************************
+**
+** 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 "designersupport.h"
+#include <private/qquickitem_p.h>
+
+#include <QtQuick/private/qquickshadereffectsource_p.h>
+#include <QtQuick/private/qquickrectangle_p.h>
+#include <private/qdeclarativeengine_p.h>
+#include <private/qquickview_p.h>
+#include <QtQuick/private/qdeclarativestategroup_p.h>
+#include <QtGui/QImage>
+
+QT_BEGIN_NAMESPACE
+
+DesignerSupport::DesignerSupport()
+{
+}
+
+DesignerSupport::~DesignerSupport()
+{
+    QHash<QQuickItem*, QQuickShaderEffectTexture*>::iterator iterator;
+
+    for (iterator = m_itemTextureHash.begin(); iterator != m_itemTextureHash.end(); ++iterator) {
+        QQuickShaderEffectTexture *texture = iterator.value();
+        QQuickItem *item = iterator.key();
+        QQuickItemPrivate::get(item)->derefFromEffectItem(true);
+        delete texture;
+    }
+}
+
+void DesignerSupport::refFromEffectItem(QQuickItem *referencedItem, bool hide)
+{
+    if (referencedItem == 0)
+        return;
+
+    QQuickItemPrivate::get(referencedItem)->refFromEffectItem(hide);
+    QQuickCanvasPrivate::get(referencedItem->canvas())->updateDirtyNode(referencedItem);
+
+    Q_ASSERT(QQuickItemPrivate::get(referencedItem)->rootNode);
+
+    if (!m_itemTextureHash.contains(referencedItem)) {
+        QQuickShaderEffectTexture *texture = new QQuickShaderEffectTexture(referencedItem);
+
+        texture->setLive(true);
+        texture->setItem(QQuickItemPrivate::get(referencedItem)->rootNode);
+        texture->setRect(referencedItem->boundingRect());
+        texture->setSize(referencedItem->boundingRect().size().toSize());
+        texture->setRecursive(true);
+#ifndef QT_OPENGL_ES
+        texture->setFormat(GL_RGBA8);
+#else
+        texture->setFormat(GL_RGBA);
+#endif
+        texture->setHasMipmaps(false);
+
+        m_itemTextureHash.insert(referencedItem, texture);
+    }
+}
+
+void DesignerSupport::derefFromEffectItem(QQuickItem *referencedItem, bool unhide)
+{
+    if (referencedItem == 0)
+        return;
+
+    delete m_itemTextureHash.take(referencedItem);
+    QQuickItemPrivate::get(referencedItem)->derefFromEffectItem(unhide);
+}
+
+QImage DesignerSupport::renderImageForItem(QQuickItem *referencedItem, const QRectF &boundingRect, const QSize &imageSize)
+{
+    if (referencedItem == 0 || referencedItem->parentItem() == 0) {
+        qDebug() << __FILE__ << __LINE__ << "Warning: Item can be rendered.";
+        return QImage();
+    }
+
+    QQuickShaderEffectTexture *renderTexture = m_itemTextureHash.value(referencedItem);
+
+    Q_ASSERT(renderTexture);
+    if (renderTexture == 0)
+         return QImage();
+    renderTexture->setRect(boundingRect);
+    renderTexture->setSize(imageSize);
+    renderTexture->updateTexture();
+
+    QImage renderImage = renderTexture->toImage();
+    renderImage = renderImage.mirrored(false, true);
+
+    if (renderImage.size().isEmpty())
+        qDebug() << __FILE__ << __LINE__ << "Warning: Image is empty.";
+
+    return renderImage;
+}
+
+bool DesignerSupport::isDirty(QQuickItem *referencedItem, DirtyType dirtyType)
+{
+    if (referencedItem == 0)
+        return false;
+
+    return QQuickItemPrivate::get(referencedItem)->dirtyAttributes & dirtyType;
+}
+
+void DesignerSupport::resetDirty(QQuickItem *referencedItem)
+{
+    if (referencedItem == 0)
+        return;
+
+    QQuickItemPrivate::get(referencedItem)->dirtyAttributes = 0x0;
+    QQuickItemPrivate::get(referencedItem)->removeFromDirtyList();
+}
+
+QTransform DesignerSupport::canvasTransform(QQuickItem *referencedItem)
+{
+    if (referencedItem == 0)
+        return QTransform();
+
+    return QQuickItemPrivate::get(referencedItem)->itemToCanvasTransform();
+}
+
+QTransform DesignerSupport::parentTransform(QQuickItem *referencedItem)
+{
+    if (referencedItem == 0)
+        return QTransform();
+
+    QTransform parentTransform;
+
+    QQuickItemPrivate::get(referencedItem)->itemToParentTransform(parentTransform);
+
+    return parentTransform;
+}
+
+QString propertyNameForAnchorLine(const QQuickAnchorLine::AnchorLine &anchorLine)
+{
+    switch (anchorLine) {
+        case QQuickAnchorLine::Left: return QLatin1String("left");
+        case QQuickAnchorLine::Right: return QLatin1String("right");
+        case QQuickAnchorLine::Top: return QLatin1String("top");
+        case QQuickAnchorLine::Bottom: return QLatin1String("bottom");
+        case QQuickAnchorLine::HCenter: return QLatin1String("horizontalCenter");
+        case QQuickAnchorLine::VCenter: return QLatin1String("verticalCenter");
+        case QQuickAnchorLine::Baseline: return QLatin1String("baseline");
+        case QQuickAnchorLine::Invalid:
+        default: return QString();
+    }
+}
+
+bool isValidAnchorName(const QString &name)
+{
+    static QStringList anchorNameList(QStringList() << QLatin1String("anchors.top")
+                                                    << QLatin1String("anchors.left")
+                                                    << QLatin1String("anchors.right")
+                                                    << QLatin1String("anchors.bottom")
+                                                    << QLatin1String("anchors.verticalCenter")
+                                                    << QLatin1String("anchors.horizontalCenter")
+                                                    << QLatin1String("anchors.fill")
+                                                    << QLatin1String("anchors.centerIn")
+                                                    << QLatin1String("anchors.baseline"));
+
+    return anchorNameList.contains(name);
+}
+
+bool DesignerSupport::isAnchoredTo(QQuickItem *fromItem, QQuickItem *toItem)
+{
+    Q_ASSERT(dynamic_cast<QQuickItemPrivate*>(QQuickItemPrivate::get(fromItem)));
+    QQuickItemPrivate *fromItemPrivate = static_cast<QQuickItemPrivate*>(QQuickItemPrivate::get(fromItem));
+    QQuickAnchors *anchors = fromItemPrivate->anchors();
+    return anchors->fill() == toItem
+            || anchors->centerIn() == toItem
+            || anchors->bottom().item == toItem
+            || anchors->top().item == toItem
+            || anchors->left().item == toItem
+            || anchors->right().item == toItem
+            || anchors->verticalCenter().item == toItem
+            || anchors->horizontalCenter().item == toItem
+            || anchors->baseline().item == toItem;
+}
+
+bool DesignerSupport::areChildrenAnchoredTo(QQuickItem *fromItem, QQuickItem *toItem)
+{
+    foreach (QQuickItem *childItem, fromItem->childItems()) {
+        if (childItem) {
+            if (isAnchoredTo(childItem, toItem))
+                return true;
+
+            if (areChildrenAnchoredTo(childItem, toItem))
+                return true;
+        }
+    }
+
+    return false;
+}
+
+QQuickAnchors *anchors(QQuickItem *item)
+{
+    QQuickItemPrivate *itemPrivate = static_cast<QQuickItemPrivate*>(QQuickItemPrivate::get(item));
+    return itemPrivate->anchors();
+}
+
+QQuickAnchors::Anchor anchorLineFlagForName(const QString &name)
+{
+    if (name == QLatin1String("anchors.top"))
+        return QQuickAnchors::TopAnchor;
+
+    if (name == QLatin1String("anchors.left"))
+        return QQuickAnchors::LeftAnchor;
+
+    if (name == QLatin1String("anchors.bottom"))
+         return QQuickAnchors::BottomAnchor;
+
+    if (name == QLatin1String("anchors.right"))
+        return QQuickAnchors::RightAnchor;
+
+    if (name == QLatin1String("anchors.horizontalCenter"))
+        return QQuickAnchors::HCenterAnchor;
+
+    if (name == QLatin1String("anchors.verticalCenter"))
+         return QQuickAnchors::VCenterAnchor;
+
+    if (name == QLatin1String("anchors.baseline"))
+         return QQuickAnchors::BaselineAnchor;
+
+
+    Q_ASSERT_X(false, Q_FUNC_INFO, "wrong anchor name - this should never happen");
+    return QQuickAnchors::LeftAnchor;
+}
+
+bool DesignerSupport::hasAnchor(QQuickItem *item, const QString &name)
+{
+    if (!isValidAnchorName(name))
+        return false;
+
+    if (name == QLatin1String("anchors.fill"))
+        return anchors(item)->fill() != 0;
+
+    if (name == QLatin1String("anchors.centerIn"))
+        return anchors(item)->centerIn() != 0;
+
+    if (name == QLatin1String("anchors.right"))
+        return anchors(item)->right().item != 0;
+
+    if (name == QLatin1String("anchors.top"))
+        return anchors(item)->top().item != 0;
+
+    if (name == QLatin1String("anchors.left"))
+        return anchors(item)->left().item != 0;
+
+    if (name == QLatin1String("anchors.bottom"))
+        return anchors(item)->bottom().item != 0;
+
+    if (name == QLatin1String("anchors.horizontalCenter"))
+        return anchors(item)->horizontalCenter().item != 0;
+
+    if (name == QLatin1String("anchors.verticalCenter"))
+        return anchors(item)->verticalCenter().item != 0;
+
+    if (name == QLatin1String("anchors.baseline"))
+        return anchors(item)->baseline().item != 0;
+
+    return anchors(item)->usedAnchors().testFlag(anchorLineFlagForName(name));
+}
+
+QQuickItem *DesignerSupport::anchorFillTargetItem(QQuickItem *item)
+{
+    return anchors(item)->fill();
+}
+
+QQuickItem *DesignerSupport::anchorCenterInTargetItem(QQuickItem *item)
+{
+    return anchors(item)->centerIn();
+}
+
+
+
+QPair<QString, QObject*> DesignerSupport::anchorLineTarget(QQuickItem *item, const QString &name, QDeclarativeContext *context)
+{
+    QObject *targetObject = 0;
+    QString targetName;
+
+    if (name == QLatin1String("anchors.fill")) {
+        targetObject = anchors(item)->fill();
+    } else if (name == QLatin1String("anchors.centerIn")) {
+        targetObject = anchors(item)->centerIn();
+    } else {
+        QDeclarativeProperty metaProperty(item, name, context);
+        if (!metaProperty.isValid())
+            return QPair<QString, QObject*>();
+
+        QQuickAnchorLine anchorLine = metaProperty.read().value<QQuickAnchorLine>();
+        if (anchorLine.anchorLine != QQuickAnchorLine::Invalid) {
+            targetObject = anchorLine.item;
+            targetName = propertyNameForAnchorLine(anchorLine.anchorLine);
+        }
+
+    }
+
+    return QPair<QString, QObject*>(targetName, targetObject);
+}
+
+void DesignerSupport::resetAnchor(QQuickItem *item, const QString &name)
+{
+    if (name == QLatin1String("anchors.fill")) {
+        anchors(item)->resetFill();
+    } else if (name == QLatin1String("anchors.centerIn")) {
+        anchors(item)->resetCenterIn();
+    } else if (name == QLatin1String("anchors.top")) {
+        anchors(item)->resetTop();
+    } else if (name == QLatin1String("anchors.left")) {
+        anchors(item)->resetLeft();
+    } else if (name == QLatin1String("anchors.right")) {
+        anchors(item)->resetRight();
+    } else if (name == QLatin1String("anchors.bottom")) {
+        anchors(item)->resetBottom();
+    } else if (name == QLatin1String("anchors.horizontalCenter")) {
+        anchors(item)->resetHorizontalCenter();
+    } else if (name == QLatin1String("anchors.verticalCenter")) {
+        anchors(item)->resetVerticalCenter();
+    } else if (name == QLatin1String("anchors.baseline")) {
+        anchors(item)->resetBaseline();
+    }
+}
+
+QList<QObject*> DesignerSupport::statesForItem(QQuickItem *item)
+{
+    QList<QObject*> objectList;
+    QList<QDeclarativeState *> stateList = QQuickItemPrivate::get(item)->_states()->states();
+    qCopy(stateList.begin(), stateList.end(), objectList.begin());
+
+    return objectList;
+}
+
+bool DesignerSupport::isComponentComplete(QQuickItem *item)
+{
+    return static_cast<QQuickItemPrivate*>(QQuickItemPrivate::get(item))->componentComplete;
+}
+
+int DesignerSupport::borderWidth(QQuickItem *item)
+{
+    QQuickRectangle *rectangle = qobject_cast<QQuickRectangle*>(item);
+    if (rectangle)
+        return rectangle->border()->width();
+
+    return 0;
+}
+
+void DesignerSupport::refreshExpressions(QDeclarativeContext *context)
+{
+    QDeclarativeContextPrivate::get(context)->data->refreshExpressions();
+}
+
+void DesignerSupport::setRootItem(QQuickView *view, QQuickItem *item)
+{
+    QQuickViewPrivate::get(view)->setRootObject(item);
+}
+
+bool DesignerSupport::isValidWidth(QQuickItem *item)
+{
+    return QQuickItemPrivate::get(item)->heightValid;
+}
+
+bool DesignerSupport::isValidHeight(QQuickItem *item)
+{
+    return QQuickItemPrivate::get(item)->widthValid;
+}
+
+void DesignerSupport::updateDirtyNode(QQuickItem *item)
+{
+    QQuickCanvasPrivate::get(item->canvas())->updateDirtyNode(item);
+}
+
+QT_END_NAMESPACE
diff --git a/src/quick/designer/designersupport.h b/src/quick/designer/designersupport.h
new file mode 100644
index 0000000000..18546eca66
--- /dev/null
+++ b/src/quick/designer/designersupport.h
@@ -0,0 +1,152 @@
+/****************************************************************************
+**
+** 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.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef DESIGNERSUPPORT_H
+#define DESIGNERSUPPORT_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+
+#include <QtQuick/qtquickglobal.h>
+#include <QtCore/QtGlobal>
+#include <QtCore/QHash>
+#include <QtCore/QRectF>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+class QQuickItem;
+class QQuickShaderEffectTexture;
+class QImage;
+class QTransform;
+class QDeclarativeContext;
+class QQuickView;
+
+
+class Q_QUICK_EXPORT DesignerSupport
+{
+public:
+    enum DirtyType {
+        TransformOrigin         = 0x00000001,
+        Transform               = 0x00000002,
+        BasicTransform          = 0x00000004,
+        Position                = 0x00000008,
+        Size                    = 0x00000010,
+
+        ZValue                  = 0x00000020,
+        Content                 = 0x00000040,
+        Smooth                  = 0x00000080,
+        OpacityValue            = 0x00000100,
+        ChildrenChanged         = 0x00000200,
+        ChildrenStackingChanged = 0x00000400,
+        ParentChanged           = 0x00000800,
+
+        Clip                    = 0x00001000,
+        Canvas                  = 0x00002000,
+
+        EffectReference         = 0x00008000,
+        Visible                 = 0x00010000,
+        HideReference           = 0x00020000,
+
+        TransformUpdateMask     = TransformOrigin | Transform | BasicTransform | Position | Size | Canvas,
+        ComplexTransformUpdateMask     = Transform | Canvas,
+        ContentUpdateMask       = Size | Content | Smooth | Canvas,
+        ChildrenUpdateMask      = ChildrenChanged | ChildrenStackingChanged | EffectReference | Canvas
+    };
+
+
+    DesignerSupport();
+    ~DesignerSupport();
+
+    void refFromEffectItem(QQuickItem *referencedItem, bool hide = true);
+    void derefFromEffectItem(QQuickItem *referencedItem, bool unhide = true);
+
+    QImage renderImageForItem(QQuickItem *referencedItem, const QRectF &boundingRect, const QSize &imageSize);
+
+    static bool isDirty(QQuickItem *referencedItem, DirtyType dirtyType);
+    static void resetDirty(QQuickItem *referencedItem);
+
+    static QTransform canvasTransform(QQuickItem *referencedItem);
+    static QTransform parentTransform(QQuickItem *referencedItem);
+
+    static bool isAnchoredTo(QQuickItem *fromItem, QQuickItem *toItem);
+    static bool areChildrenAnchoredTo(QQuickItem *fromItem, QQuickItem *toItem);
+    static bool hasAnchor(QQuickItem *item, const QString &name);
+    static QQuickItem *anchorFillTargetItem(QQuickItem *item);
+    static QQuickItem *anchorCenterInTargetItem(QQuickItem *item);
+    static QPair<QString, QObject*> anchorLineTarget(QQuickItem *item, const QString &name, QDeclarativeContext *context);
+    static void resetAnchor(QQuickItem *item, const QString &name);
+
+
+    static QList<QObject*> statesForItem(QQuickItem *item);
+
+    static bool isComponentComplete(QQuickItem *item);
+
+    static int borderWidth(QQuickItem *item);
+
+    static void refreshExpressions(QDeclarativeContext *context);
+
+    static void setRootItem(QQuickView *view, QQuickItem *item);
+
+    static bool isValidWidth(QQuickItem *item);
+    static bool isValidHeight(QQuickItem *item);
+
+    static void updateDirtyNode(QQuickItem *item);
+
+private:
+    QHash<QQuickItem*, QQuickShaderEffectTexture*> m_itemTextureHash;
+};
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // DESIGNERSUPPORT_H