Tooling: Add QML preview debug service

Task-number: QDS-181
Change-Id: I02193afb84aa111792d8bebff3bdd9b410f9db5a
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>

1 files changed, 102 insertions, 0 deletions

diff --git a/src/plugins/qmltooling/qmldbg_preview/qqmlpreviewposition.cpp b/src/plugins/qmltooling/qmldbg_preview/qqmlpreviewposition.cpp
new file mode 100644
index 0000000000..2382f72fe3
--- /dev/null
+++ b/src/plugins/qmltooling/qmldbg_preview/qqmlpreviewposition.cpp
@@ -0,0 +1,102 @@
+/****************************************************************************
+**
+** Copyright (C) 2018 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QML preview debug service.
+**
+** $QT_BEGIN_LICENSE:GPL-EXCEPT$
+** 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.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qqmlpreviewposition.h"
+
+#include <QtGui/qwindow.h>
+#include <QtGui/qscreen.h>
+#include <QtGui/qguiapplication.h>
+
+QT_BEGIN_NAMESPACE
+
+static const QSize availableScreenSize(const QPoint &point)
+{
+    if (const QScreen *screen = QGuiApplication::screenAt(point))
+        return screen->availableGeometry().size();
+    return QSize();
+}
+
+QQmlPreviewPosition::QQmlPreviewPosition()
+    : m_settings("QtProject", "QtQmlPreview")
+{
+    m_savePositionTimer.setSingleShot(true);
+    m_savePositionTimer.setInterval(500);
+    QObject::connect(&m_savePositionTimer, &QTimer::timeout, [this]() {
+        saveWindowPosition();
+    });
+}
+
+void QQmlPreviewPosition::setPosition(const QPoint &point)
+{
+    m_hasPosition = true;
+    m_lastWindowPosition = point;
+    m_savePositionTimer.start();
+}
+
+void QQmlPreviewPosition::saveWindowPosition()
+{
+    if (m_hasPosition) {
+        if (!m_settingsKey.isNull())
+            m_settings.setValue(m_settingsKey, m_lastWindowPosition);
+
+        m_settings.setValue(QLatin1String("global_lastpostion"), m_lastWindowPosition);
+    }
+}
+
+void QQmlPreviewPosition::loadWindowPositionSettings(const QUrl &url)
+{
+    m_settingsKey = url.toString(QUrl::PreferLocalFile) + QLatin1String("_lastpostion");
+
+    if (m_settings.contains(m_settingsKey)) {
+        m_hasPosition = true;
+        m_lastWindowPosition = m_settings.value(m_settingsKey).toPoint();
+    }
+}
+
+void QQmlPreviewPosition::initLastSavedWindowPosition(QWindow *window)
+{
+    if (m_positionedWindows.contains(window))
+        return;
+    if (!m_hasPosition) {
+        // in case there was nothing saved, we do not want to set anything
+        if (!m_settings.contains(QLatin1String("global_lastpostion")))
+            return;
+        m_lastWindowPosition = m_settings.value(QLatin1String("global_lastpostion")).toPoint();
+    }
+    if (QGuiApplication::screenAt(m_lastWindowPosition))
+        window->setFramePosition(m_lastWindowPosition);
+
+    m_positionedWindows.append(window);
+}
+
+const QSize QQmlPreviewPosition::currentScreenSize(QWindow *window)
+{
+    return availableScreenSize(window->position());
+}
+
+QT_END_NAMESPACE