QmlDesigner: Add tooltips to UrlChooser

* Add tooltips with thumbnails to UrlChooser enable preview of image
  formats and meshes
* Add property editor image provider which makes use of the image cache
* Add mesh image cache collector in order to create thumbnails for
  meshes and built-in primitves
* Fix typo in explicit image cache image provider
* Add return value in time stamp provider if provided file does not
  exist

Change-Id: I2290d2ace87ddd90e9899e343f2ad1ecd2993fdf
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>
Reviewed-by: Thomas Hartmann <thomas.hartmann@qt.io>

1 files changed, 48 insertions, 0 deletions

diff --git a/src/plugins/qmldesigner/components/propertyeditor/propertyeditorimageprovider.h b/src/plugins/qmldesigner/components/propertyeditor/propertyeditorimageprovider.h
new file mode 100644
index 0000000000..bb883e4450
--- /dev/null
+++ b/src/plugins/qmldesigner/components/propertyeditor/propertyeditorimageprovider.h
@@ -0,0 +1,48 @@
+/****************************************************************************
+**
+** Copyright (C) 2022 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 "imagecache/smallimagecacheprovider.h"
+
+#include <QQuickAsyncImageProvider>
+
+namespace QmlDesigner {
+
+class PropertyEditorImageProvider : public QQuickAsyncImageProvider
+{
+public:
+    PropertyEditorImageProvider(AsynchronousImageCache &imageCache, const QImage &defaultImage = {})
+        : m_smallImageCacheProvider(imageCache, defaultImage)
+    {}
+
+    QQuickImageResponse *requestImageResponse(const QString &id,
+                                              const QSize &requestedSize) override;
+
+private:
+    SmallImageCacheProvider m_smallImageCacheProvider;
+};
+
+} // namespace QmlDesigner