QmlDesigner: Choose target property when dragging image to material

When dragging an image to a Quick3D default or principled material,
pop up a dialog to choose the target texture property.

Change-Id: I8d97ef5bf7c5192c2651fcd8cf64a7f4a87c9847
Fixes: QDS-2326
Reviewed-by: Mahmoud Badri <mahmoud.badri@qt.io>
Reviewed-by: Thomas Hartmann <thomas.hartmann@qt.io>

5 files changed, 277 insertions, 12 deletions

diff --git a/src/plugins/qmldesigner/components/navigator/choosetexturepropertydialog.cpp b/src/plugins/qmldesigner/components/navigator/choosetexturepropertydialog.cpp
new file mode 100644
index 0000000000..826ed580ca
--- /dev/null
+++ b/src/plugins/qmldesigner/components/navigator/choosetexturepropertydialog.cpp
@@ -0,0 +1,91 @@
+/****************************************************************************
+**
+** Copyright (C) 2020 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** 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 The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+****************************************************************************/
+
+#include "choosetexturepropertydialog.h"
+#include "nodemetainfo.h"
+#include "ui_choosetexturepropertydialog.h"
+
+namespace QmlDesigner {
+
+// This dialog displays all texture properties of an object and allows the user to choose one
+ChooseTexturePropertyDialog::ChooseTexturePropertyDialog(const ModelNode &node, QWidget *parent)
+    : QDialog(parent)
+    , m_ui(new Ui::ChooseTexturePropertyDialog)
+{
+    m_ui->setupUi(this);
+    setWindowTitle(tr("Select Texture Property"));
+    m_ui->label->setText(tr("Set texture to property:"));
+    setFixedSize(size());
+
+    connect(m_ui->listProps, &QListWidget::itemClicked, this, [this](QListWidgetItem *item) {
+        m_selectedProperty = item->isSelected() ? item->data(Qt::DisplayRole).toByteArray() : QByteArray();
+    });
+
+    connect(m_ui->listProps, &QListWidget::itemDoubleClicked, this, [this](QListWidgetItem *item) {
+        Q_UNUSED(item)
+        QDialog::accept();
+    });
+
+    fillList(node);
+}
+
+ChooseTexturePropertyDialog::~ChooseTexturePropertyDialog()
+{
+    delete m_ui;
+}
+
+TypeName ChooseTexturePropertyDialog::selectedProperty() const
+{
+    return m_selectedProperty;
+}
+
+void ChooseTexturePropertyDialog::fillList(const ModelNode &node)
+{
+    // Fill the list with all properties of type Texture
+    const auto metaInfo = node.metaInfo();
+    const auto propNames = metaInfo.propertyNames();
+    const TypeName textureProp("QtQuick3D.Texture");
+    QStringList nameList;
+    for (const auto &propName : propNames) {
+        if (metaInfo.propertyTypeName(propName) == textureProp)
+            nameList.append(QString::fromLatin1(propName));
+    }
+
+    if (!nameList.isEmpty()) {
+        QString defaultProp = nameList.first();
+
+        nameList.sort();
+        for (const auto &propName : qAsConst(nameList)) {
+            QListWidgetItem *newItem = new QListWidgetItem(propName);
+            m_ui->listProps->addItem(newItem);
+        }
+
+        // Select the default prop
+        m_ui->listProps->setCurrentRow(nameList.indexOf(defaultProp));
+        m_selectedProperty = defaultProp.toLatin1();
+    }
+}
+
+}
diff --git a/src/plugins/qmldesigner/components/navigator/choosetexturepropertydialog.h b/src/plugins/qmldesigner/components/navigator/choosetexturepropertydialog.h
new file mode 100644
index 0000000000..7604e6f942
--- /dev/null
+++ b/src/plugins/qmldesigner/components/navigator/choosetexturepropertydialog.h
@@ -0,0 +1,54 @@
+/****************************************************************************
+**
+** Copyright (C) 2020 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** 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 The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+****************************************************************************/
+
+#pragma once
+
+#include <modelnode.h>
+#include <nodeinstanceglobal.h>
+
+#include <QtWidgets/qdialog.h>
+
+namespace QmlDesigner {
+namespace Ui {
+class ChooseTexturePropertyDialog;
+}
+
+class ChooseTexturePropertyDialog : public QDialog
+{
+    Q_OBJECT
+
+public:
+    explicit ChooseTexturePropertyDialog(const ModelNode &node, QWidget *parent = 0);
+    ~ChooseTexturePropertyDialog();
+
+    TypeName selectedProperty() const;
+
+private:
+    void fillList(const ModelNode &node);
+
+    Ui::ChooseTexturePropertyDialog *m_ui;
+    TypeName m_selectedProperty;
+};
+}
diff --git a/src/plugins/qmldesigner/components/navigator/choosetexturepropertydialog.ui b/src/plugins/qmldesigner/components/navigator/choosetexturepropertydialog.ui
new file mode 100644
index 0000000000..8643e866d5
--- /dev/null
+++ b/src/plugins/qmldesigner/components/navigator/choosetexturepropertydialog.ui
@@ -0,0 +1,110 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>QmlDesigner::ChooseTexturePropertyDialog</class>
+ <widget class="QDialog" name="QmlDesigner::ChooseTexturePropertyDialog">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>250</width>
+    <height>250</height>
+   </rect>
+  </property>
+  <property name="minimumSize">
+   <size>
+    <width>200</width>
+    <height>150</height>
+   </size>
+  </property>
+  <property name="maximumSize">
+   <size>
+    <width>1000</width>
+    <height>1000</height>
+   </size>
+  </property>
+  <property name="windowTitle">
+   <string/>
+  </property>
+  <property name="autoFillBackground">
+   <bool>false</bool>
+  </property>
+  <property name="sizeGripEnabled">
+   <bool>false</bool>
+  </property>
+  <layout class="QVBoxLayout" name="verticalLayout">
+   <property name="leftMargin">
+    <number>0</number>
+   </property>
+   <property name="topMargin">
+    <number>0</number>
+   </property>
+   <property name="rightMargin">
+    <number>0</number>
+   </property>
+   <property name="bottomMargin">
+    <number>0</number>
+   </property>
+   <item>
+    <widget class="QWidget" name="widget" native="true">
+     <layout class="QVBoxLayout" name="verticalLayout_2">
+      <item>
+       <widget class="QLabel" name="label">
+        <property name="text">
+         <string/>
+        </property>
+       </widget>
+      </item>
+      <item>
+       <widget class="QListWidget" name="listProps"/>
+      </item>
+      <item>
+       <widget class="QDialogButtonBox" name="buttonBox">
+        <property name="orientation">
+         <enum>Qt::Horizontal</enum>
+        </property>
+        <property name="standardButtons">
+         <set>QDialogButtonBox::Cancel|QDialogButtonBox::Ok</set>
+        </property>
+       </widget>
+      </item>
+     </layout>
+    </widget>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections>
+  <connection>
+   <sender>buttonBox</sender>
+   <signal>accepted()</signal>
+   <receiver>QmlDesigner::ChooseTexturePropertyDialog</receiver>
+   <slot>accept()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>240</x>
+     <y>240</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>157</x>
+     <y>274</y>
+    </hint>
+   </hints>
+  </connection>
+  <connection>
+   <sender>buttonBox</sender>
+   <signal>rejected()</signal>
+   <receiver>QmlDesigner::ChooseTexturePropertyDialog</receiver>
+   <slot>reject()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>240</x>
+     <y>240</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>286</x>
+     <y>274</y>
+    </hint>
+   </hints>
+  </connection>
+ </connections>
+</ui>
diff --git a/src/plugins/qmldesigner/components/navigator/navigator.pri b/src/plugins/qmldesigner/components/navigator/navigator.pri
index 08432e7f86..7344f1bc5a 100644
--- a/src/plugins/qmldesigner/components/navigator/navigator.pri
+++ b/src/plugins/qmldesigner/components/navigator/navigator.pri
@@ -5,7 +5,8 @@ SOURCES += navigatorview.cpp \
     navigatorwidget.cpp \
     nameitemdelegate.cpp \
     iconcheckboxitemdelegate.cpp \
-    navigatortreeview.cpp
+    navigatortreeview.cpp \
+    choosetexturepropertydialog.cpp
 
 HEADERS += navigatorview.h \
     navigatortreemodel.h \
@@ -13,6 +14,9 @@ HEADERS += navigatorview.h \
     nameitemdelegate.h \
     iconcheckboxitemdelegate.h \
     navigatortreeview.h \
-    navigatormodelinterface.h
+    navigatormodelinterface.h \
+    choosetexturepropertydialog.h
 
 RESOURCES += navigator.qrc
+
+FORMS += choosetexturepropertydialog.ui
diff --git a/src/plugins/qmldesigner/components/navigator/navigatortreemodel.cpp b/src/plugins/qmldesigner/components/navigator/navigatortreemodel.cpp
index e2cc2970b8..c93b3145e9 100644
--- a/src/plugins/qmldesigner/components/navigator/navigatortreemodel.cpp
+++ b/src/plugins/qmldesigner/components/navigator/navigatortreemodel.cpp
@@ -25,6 +25,7 @@
 
 #include "navigatortreemodel.h"
 #include "navigatorview.h"
+#include "choosetexturepropertydialog.h"
 #include "qmldesignerplugin.h"
 
 #include <bindingproperty.h>
@@ -661,16 +662,21 @@ void NavigatorTreeModel::handleItemLibraryImageDrop(const QMimeData *mimeData, i
 
         if (targetNode.isSubclassOf("QtQuick3D.Material")) {
             // if dropping an image on a default material, create a texture instead of image
-            m_view->executeInTransaction("NavigatorTreeModel::handleItemLibraryImageDrop", [&] {
-                if (createTextureNode(targetProperty)) {
-                    // Automatically set the texture to default property
-                    // TODO: allow the user to choose which map property to set the texture for (QDS-2326)
-                    if (targetNode.isSubclassOf("QtQuick3D.DefaultMaterial"))
-                        targetNode.bindingProperty("diffuseMap").setExpression(newModelNode.validId());
-                    else if (targetNode.isSubclassOf("QtQuick3D.PrincipledMaterial"))
-                        targetNode.bindingProperty("baseColorMap").setExpression(newModelNode.validId());
-                }
-            });
+            ChooseTexturePropertyDialog *dialog = nullptr;
+            if (targetNode.isSubclassOf("QtQuick3D.DefaultMaterial") || targetNode.isSubclassOf("QtQuick3D.PrincipledMaterial")) {
+                // Show texture property selection dialog
+                dialog = new ChooseTexturePropertyDialog(targetNode, Core::ICore::dialogParent());
+                dialog->exec();
+            }
+            if (!dialog || dialog->result() == QDialog::Accepted) {
+                m_view->executeInTransaction("NavigatorTreeModel::handleItemLibraryImageDrop", [&] {
+                    if (createTextureNode(targetProperty) && dialog) {
+                        // Automatically set the texture to selected property
+                        targetNode.bindingProperty(dialog->selectedProperty()).setExpression(newModelNode.validId());
+                    }
+                });
+            }
+            delete dialog;
         } else if (targetNode.isSubclassOf("QtQuick3D.TextureInput")) {
             // If dropping an image on a TextureInput, create a texture on the same level as
             // TextureInput, as the TextureInput doesn't support Texture children (QTBUG-86219)