QmlDesigner: Add AnchorIndicator

Change-Id: I0cd4b3c9dc0178936ffd96d8acb443ce1a228d1f
Reviewed-by: Thomas Hartmann <Thomas.Hartmann@digia.com>

1 files changed, 174 insertions, 0 deletions

diff --git a/src/plugins/qmldesigner/components/formeditor/anchorindicator.cpp b/src/plugins/qmldesigner/components/formeditor/anchorindicator.cpp
new file mode 100644
index 0000000000..e11f117eaa
--- /dev/null
+++ b/src/plugins/qmldesigner/components/formeditor/anchorindicator.cpp
@@ -0,0 +1,174 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of Qt Creator.
+**
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, 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, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+****************************************************************************/
+
+#include "anchorindicator.h"
+
+#include "qmlanchors.h"
+#include "anchorindicatorgraphicsitem.h"
+#include <QGraphicsScene>
+#include <QGraphicsPathItem>
+
+namespace QmlDesigner {
+
+AnchorIndicator::AnchorIndicator(LayerItem *layerItem)
+    : m_layerItem(layerItem)
+{
+}
+
+AnchorIndicator::AnchorIndicator()
+{
+}
+
+AnchorIndicator::~AnchorIndicator()
+{
+    clear();
+}
+
+void AnchorIndicator::show()
+{
+    if (m_indicatorTopShape)
+        m_indicatorTopShape->show();
+
+    if (m_indicatorBottomShape)
+        m_indicatorBottomShape->show();
+
+    if (m_indicatorLeftShape)
+        m_indicatorLeftShape->show();
+
+    if (m_indicatorRightShape)
+        m_indicatorRightShape->show();
+}
+
+void AnchorIndicator::hide()
+{
+    if (m_indicatorTopShape)
+        m_indicatorTopShape->hide();
+
+    if (m_indicatorBottomShape)
+        m_indicatorBottomShape->hide();
+
+    if (m_indicatorLeftShape)
+        m_indicatorLeftShape->hide();
+
+    if (m_indicatorRightShape)
+        m_indicatorRightShape->hide();
+}
+
+void AnchorIndicator::clear()
+{
+  delete m_indicatorTopShape;
+  delete m_indicatorBottomShape;
+  delete m_indicatorLeftShape;
+  delete m_indicatorRightShape;
+}
+
+void AnchorIndicator::setItems(const QList<FormEditorItem *> &itemList)
+{
+    clear();
+
+    if (itemList.count() == 1) {
+        m_formEditorItem = itemList.first();
+        QmlItemNode sourceQmlItemNode = m_formEditorItem->qmlItemNode();
+        QmlAnchors qmlAnchors = sourceQmlItemNode.anchors();
+
+        if (qmlAnchors.modelHasAnchor(AnchorLine::Top)) {
+            m_indicatorTopShape = new AnchorIndicatorGraphicsItem(m_layerItem.data());
+            m_indicatorTopShape->updateAnchorIndicator(AnchorLine(sourceQmlItemNode, AnchorLine::Top),
+                                                         qmlAnchors.modelAnchor(AnchorLine::Top));
+        }
+
+        if (qmlAnchors.modelHasAnchor(AnchorLine::Bottom)) {
+            m_indicatorBottomShape = new AnchorIndicatorGraphicsItem(m_layerItem.data());
+            m_indicatorBottomShape->updateAnchorIndicator(AnchorLine(sourceQmlItemNode, AnchorLine::Bottom),
+                                                         qmlAnchors.modelAnchor(AnchorLine::Bottom));
+        }
+
+        if (qmlAnchors.modelHasAnchor(AnchorLine::Left)) {
+            m_indicatorLeftShape = new AnchorIndicatorGraphicsItem(m_layerItem.data());
+            m_indicatorLeftShape->updateAnchorIndicator(AnchorLine(sourceQmlItemNode, AnchorLine::Left),
+                                                         qmlAnchors.modelAnchor(AnchorLine::Left));
+        }
+
+        if (qmlAnchors.modelHasAnchor(AnchorLine::Right)) {
+            m_indicatorRightShape = new AnchorIndicatorGraphicsItem(m_layerItem.data());
+            m_indicatorRightShape->updateAnchorIndicator(AnchorLine(sourceQmlItemNode, AnchorLine::Right),
+                                                         qmlAnchors.modelAnchor(AnchorLine::Right));
+        }
+    }
+}
+
+void AnchorIndicator::updateItems(const QList<FormEditorItem *> &itemList)
+{
+    foreach (FormEditorItem *formEditorItem, itemList) {
+        if (formEditorItem == m_formEditorItem) {
+            QmlItemNode sourceQmlItemNode = m_formEditorItem->qmlItemNode();
+            QmlAnchors qmlAnchors = formEditorItem->qmlItemNode().anchors();
+
+            if (qmlAnchors.modelHasAnchor(AnchorLine::Top)) {
+                if (m_indicatorTopShape.isNull())
+                    m_indicatorTopShape = new AnchorIndicatorGraphicsItem(m_layerItem.data());
+                m_indicatorTopShape->updateAnchorIndicator(AnchorLine(sourceQmlItemNode, AnchorLine::Top),
+                                                             qmlAnchors.modelAnchor(AnchorLine::Top));
+            } else {
+                delete m_indicatorTopShape;
+            }
+
+            if (qmlAnchors.modelHasAnchor(AnchorLine::Bottom)) {
+                if (m_indicatorBottomShape.isNull())
+                    m_indicatorBottomShape = new AnchorIndicatorGraphicsItem(m_layerItem.data());
+                m_indicatorBottomShape->updateAnchorIndicator(AnchorLine(sourceQmlItemNode, AnchorLine::Bottom),
+                                                             qmlAnchors.modelAnchor(AnchorLine::Bottom));
+            } else {
+                delete m_indicatorBottomShape;
+            }
+
+            if (qmlAnchors.modelHasAnchor(AnchorLine::Left)) {
+                if (m_indicatorLeftShape.isNull())
+                    m_indicatorLeftShape = new AnchorIndicatorGraphicsItem(m_layerItem.data());
+                m_indicatorLeftShape->updateAnchorIndicator(AnchorLine(sourceQmlItemNode, AnchorLine::Left),
+                                                             qmlAnchors.modelAnchor(AnchorLine::Left));
+            } else {
+                delete m_indicatorLeftShape;
+            }
+
+            if (qmlAnchors.modelHasAnchor(AnchorLine::Right)) {
+                if (m_indicatorRightShape.isNull())
+                    m_indicatorRightShape = new AnchorIndicatorGraphicsItem(m_layerItem.data());
+                m_indicatorRightShape->updateAnchorIndicator(AnchorLine(sourceQmlItemNode, AnchorLine::Right),
+                                                             qmlAnchors.modelAnchor(AnchorLine::Right));
+            } else {
+                delete m_indicatorRightShape;
+            }
+
+            return;
+        }
+    }
+}
+
+} // namespace QmlDesigner