1 files changed, 105 insertions, 0 deletions
diff --git a/vcl/inc/quartz/CGHelpers.hxx b/vcl/inc/quartz/CGHelpers.hxx
new file mode 100644
index 000000000..cbd9a5e78
--- /dev/null
+++ b/vcl/inc/quartz/CGHelpers.hxx
@@ -0,0 +1,105 @@
+/* -*- 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 multiplied 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() { 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: */