1 files changed, 88 insertions, 0 deletions
diff --git a/src/quicknativestyle/qstyle/qquickstyle_p.h b/src/quicknativestyle/qstyle/qquickstyle_p.h
new file mode 100644
index 0000000000..255ef378e6
--- /dev/null
+++ b/src/quicknativestyle/qstyle/qquickstyle_p.h
@@ -0,0 +1,88 @@
+// Copyright (C) 2020 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
+
+#ifndef QSTYLE_P_H
+#define QSTYLE_P_H
+
+#include "qquickstyle.h"
+
+#include <QtCore/private/qobject_p.h>
+#include <QtGui/qguiapplication.h>
+
+QT_BEGIN_NAMESPACE
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of qstyle_*.cpp.  This header file may change from version to version
+// without notice, or even be removed.
+//
+// We mean it.
+//
+
+// Private class
+
+namespace QQC2 {
+
+class QStylePrivate: public QObjectPrivate
+{
+    Q_DECLARE_PUBLIC(QStyle)
+
+public:
+    static bool useFullScreenForPopup();
+    mutable int layoutSpacingIndex = -1;
+    QStyle *proxyStyle;
+};
+
+inline QImage styleCacheImage(const QSize &size)
+{
+    const qreal pixelRatio = qApp->devicePixelRatio();
+    QImage cacheImage = QImage(size * pixelRatio, QImage::Format_ARGB32_Premultiplied);
+    cacheImage.setDevicePixelRatio(pixelRatio);
+    return cacheImage;
+}
+
+inline QPixmap styleCachePixmap(const QSize &size)
+{
+    const qreal pixelRatio = qApp->devicePixelRatio();
+    QPixmap cachePixmap = QPixmap(size * pixelRatio);
+    cachePixmap.setDevicePixelRatio(pixelRatio);
+    return cachePixmap;
+}
+
+#define BEGIN_STYLE_PIXMAPCACHE(a) \
+    QRect rect = option->rect; \
+    QPixmap internalPixmapCache; \
+    QImage imageCache; \
+    QPainter *p = painter; \
+    QString unique = QStyleHelper::uniqueName((a), option, option->rect.size()); \
+    int txType = painter->deviceTransform().type() | painter->worldTransform().type(); \
+    bool doPixmapCache = (!option->rect.isEmpty()) \
+            && ((txType <= QTransform::TxTranslate) || (painter->deviceTransform().type() == QTransform::TxScale)); \
+    if (doPixmapCache && QPixmapCache::find(unique, &internalPixmapCache)) { \
+        painter->drawPixmap(option->rect.topLeft(), internalPixmapCache); \
+    } else { \
+        if (doPixmapCache) { \
+            rect.setRect(0, 0, option->rect.width(), option->rect.height()); \
+            imageCache = styleCacheImage(option->rect.size()); \
+            imageCache.fill(0); \
+            p = new QPainter(&imageCache); \
+        }
+
+#define END_STYLE_PIXMAPCACHE \
+        if (doPixmapCache) { \
+            p->end(); \
+            delete p; \
+            internalPixmapCache = QPixmap::fromImage(imageCache); \
+            painter->drawPixmap(option->rect.topLeft(), internalPixmapCache); \
+            QPixmapCache::insert(unique, internalPixmapCache); \
+        } \
+    }
+
+} // namespace QQC2
+
+QT_END_NAMESPACE
+
+#endif //QSTYLE_P_H