1 files changed, 150 insertions, 0 deletions
diff --git a/src/widgets/kernel/qwidgetrepaintmanager_p.h b/src/widgets/kernel/qwidgetrepaintmanager_p.h
new file mode 100644
index 0000000000..e81eee0816
--- /dev/null
+++ b/src/widgets/kernel/qwidgetrepaintmanager_p.h
@@ -0,0 +1,150 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtWidgets module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** 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-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QWIDGETREPAINTMANAGER_P_H
+#define QWIDGETREPAINTMANAGER_P_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 <QtWidgets/private/qtwidgetsglobal_p.h>
+#include <QDebug>
+#include <QtWidgets/qwidget.h>
+#include <private/qwidget_p.h>
+#include <QtGui/qbackingstore.h>
+
+QT_BEGIN_NAMESPACE
+
+class QPlatformTextureList;
+class QPlatformTextureListWatcher;
+class QWidgetRepaintManager;
+
+class Q_AUTOTEST_EXPORT QWidgetRepaintManager
+{
+public:
+    enum UpdateTime {
+        UpdateNow,
+        UpdateLater
+    };
+
+    enum BufferState{
+        BufferValid,
+        BufferInvalid
+    };
+
+    QWidgetRepaintManager(QWidget *t);
+    ~QWidgetRepaintManager();
+
+    QBackingStore *backingStore() const { return store; }
+    void setBackingStore(QBackingStore *backingStore) { store = backingStore; }
+
+    template <class T>
+    void markDirty(const T &r, QWidget *widget, UpdateTime updateTime = UpdateLater,
+                   BufferState bufferState = BufferValid);
+
+    void removeDirtyWidget(QWidget *w);
+
+    void sync(QWidget *exposedWidget, const QRegion &exposedRegion);
+    void sync();
+
+    void markNeedsFlush(QWidget *widget, const QRegion &region, const QPoint &topLevelOffset);
+
+    void addStaticWidget(QWidget *widget);
+    void moveStaticWidgets(QWidget *reparented);
+    void removeStaticWidget(QWidget *widget);
+    QRegion staticContents(QWidget *widget = nullptr, const QRect &withinClipRect = QRect()) const;
+
+    bool bltRect(const QRect &rect, int dx, int dy, QWidget *widget);
+
+private:
+    void updateLists(QWidget *widget);
+
+    void addDirtyWidget(QWidget *widget, const QRegion &rgn);
+    void resetWidget(QWidget *widget);
+
+    void addDirtyRenderToTextureWidget(QWidget *widget);
+
+    void sendUpdateRequest(QWidget *widget, UpdateTime updateTime);
+
+    bool syncAllowed();
+    void paintAndFlush();
+
+    void markNeedsFlush(QWidget *widget, const QRegion &region = QRegion());
+
+    void flush(QWidget *widget = nullptr);
+    void flush(QWidget *widget, const QRegion &region, QPlatformTextureList *widgetTextures);
+
+    bool isDirty() const;
+
+    bool hasStaticContents() const;
+    void updateStaticContentsSize();
+
+    QWidget *tlw = nullptr;
+    QBackingStore *store = nullptr;
+
+    QRegion dirty; // needsRepaint
+    QVector<QWidget *> dirtyWidgets;
+    QVector<QWidget *> dirtyRenderToTextureWidgets;
+
+    QRegion topLevelNeedsFlush;
+    QVector<QWidget *> needsFlushWidgets;
+
+    QList<QWidget *> staticWidgets;
+
+    QPlatformTextureListWatcher *textureListWatcher = nullptr;
+
+    bool updateRequestSent = false;
+
+    QElapsedTimer perfTime;
+    int perfFrames = 0;
+
+    Q_DISABLE_COPY_MOVE(QWidgetRepaintManager)
+};
+
+QT_END_NAMESPACE
+
+#endif // QWIDGETREPAINTMANAGER_P_H