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-rw-r--r--vcl/inc/quartz/CGHelpers.hxx105
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diff --git a/vcl/inc/quartz/CGHelpers.hxx b/vcl/inc/quartz/CGHelpers.hxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ */
+
+#ifndef INCLUDED_VCL_INC_QUARTZ_CGHELPER_HXX
+#define INCLUDED_VCL_INC_QUARTZ_CGHELPER_HXX
+
+#include <premac.h>
+#include <CoreGraphics/CoreGraphics.h>
+#include <postmac.h>
+
+#include <quartz/utils.h>
+
+class CGLayerHolder
+{
+private:
+ CGLayerRef mpLayer;
+
+ // Layer's scaling factor
+ float mfScale;
+
+public:
+ CGLayerHolder()
+ : mpLayer(nullptr)
+ , mfScale(1.0)
+ {
+ }
+
+ CGLayerHolder(CGLayerRef pLayer, float fScale = 1.0)
+ : mpLayer(pLayer)
+ , mfScale(fScale)
+ {
+ }
+
+ // Just the size of the layer in pixels
+ CGSize getSizePixels() const
+ {
+ CGSize aSize;
+ if (mpLayer)
+ {
+ aSize = CGLayerGetSize(mpLayer);
+ }
+ return aSize;
+ }
+
+ // Size in points is size in pixels divided by the scaling factor
+ CGSize getSizePoints() const
+ {
+ CGSize aSize;
+ if (mpLayer)
+ {
+ const CGSize aLayerSize = getSizePixels();
+ aSize.width = aLayerSize.width / mfScale;
+ aSize.height = aLayerSize.height / mfScale;
+ }
+ return aSize;
+ }
+
+ CGLayerRef get() const { return mpLayer; }
+
+ bool isSet() const { return mpLayer != nullptr; }
+
+ void set(CGLayerRef const& pLayer) { mpLayer = pLayer; }
+
+ float getScale() const { return mfScale; }
+
+ void setScale(float fScale) { mfScale = fScale; }
+};
+
+class CGContextHolder
+{
+private:
+ CGContextRef mpContext;
+
+public:
+ CGContextHolder()
+ : mpContext(nullptr)
+ {
+ }
+
+ CGContextHolder(CGContextRef pContext)
+ : mpContext(pContext)
+ {
+ }
+
+ CGContextRef get() const { return mpContext; }
+
+ bool isSet() const { return mpContext != nullptr; }
+
+ void set(CGContextRef const& pContext) { mpContext = pContext; }
+
+ void saveState() { CGContextSaveGState(mpContext); }
+
+ void restoreState() { CGContextRestoreGState(mpContext); }
+};
+
+#endif // INCLUDED_VCL_INC_QUARTZ_CGHELPER_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */