Adding upstream version 4:24.2.0.upstream/4%24.2.0

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 103 insertions, 0 deletions

diff --git a/include/vcl/cairo.hxx b/include/vcl/cairo.hxx
new file mode 100644
index 0000000000..9596b24ccb
--- /dev/null
+++ b/include/vcl/cairo.hxx
@@ -0,0 +1,103 @@
+/* -*- 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/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <sal/config.h>
+#include <osl/endian.h>
+#include <vcl/Scanline.hxx>
+#include <vcl/vclptr.hxx>
+#include <config_features.h>
+#include <config_cairo_rgba.h>
+#include <memory>
+
+// Using formats that match cairo's formats.
+// SVP_24BIT_FORMAT is used to store 24-bit images in 3-byte pixels to conserve memory.
+
+/*
+ For internal cairo we have the option --enable-cairo-rgba which is potentially
+ useful for Android or Online to switch the rgb components. For Android cairo then
+ matches the OpenGL GL_RGBA format so we can use it there where we don't have
+ GL_BGRA support. Similarly for Online we can then use cairo's pixel data
+ without needing to swizzle it for use as a canvas ImageData.
+*/
+#if ENABLE_CAIRO_RGBA
+#define SVP_24BIT_FORMAT (ScanlineFormat::N24BitTcRgb | ScanlineFormat::TopDown)
+#define SVP_CAIRO_FORMAT (ScanlineFormat::N32BitTcRgba | ScanlineFormat::TopDown)
+#define SVP_CAIRO_BLUE 1
+#define SVP_CAIRO_GREEN 2
+#define SVP_CAIRO_RED 0
+#define SVP_CAIRO_ALPHA 3
+#elif defined OSL_BIGENDIAN
+#define SVP_24BIT_FORMAT (ScanlineFormat::N24BitTcRgb | ScanlineFormat::TopDown)
+#define SVP_CAIRO_FORMAT (ScanlineFormat::N32BitTcArgb | ScanlineFormat::TopDown)
+#define SVP_CAIRO_BLUE 3
+#define SVP_CAIRO_GREEN 2
+#define SVP_CAIRO_RED 1
+#define SVP_CAIRO_ALPHA 0
+#else
+#define SVP_24BIT_FORMAT (ScanlineFormat::N24BitTcBgr | ScanlineFormat::TopDown)
+#define SVP_CAIRO_FORMAT (ScanlineFormat::N32BitTcBgra | ScanlineFormat::TopDown)
+#define SVP_CAIRO_BLUE 0
+#define SVP_CAIRO_GREEN 1
+#define SVP_CAIRO_RED 2
+#define SVP_CAIRO_ALPHA 3
+#endif
+
+typedef struct _cairo_surface cairo_surface_t;
+typedef struct _cairo cairo_t;
+
+class VirtualDevice;
+
+namespace cairo {
+
+    typedef std::shared_ptr<cairo_surface_t> CairoSurfaceSharedPtr;
+    typedef std::shared_ptr<cairo_t>         CairoSharedPtr;
+    struct Surface;
+    typedef std::shared_ptr<Surface>         SurfaceSharedPtr;
+
+    /** Cairo surface interface
+
+        For each cairo-supported platform, there's an implementation of
+        this interface
+     */
+    struct Surface
+    {
+    public:
+        virtual ~Surface() {}
+
+        // Query methods
+        virtual CairoSharedPtr getCairo() const = 0;
+        virtual CairoSurfaceSharedPtr getCairoSurface() const = 0;
+        virtual SurfaceSharedPtr getSimilar(int cairo_content_type, int width, int height) const = 0;
+
+        /// factory for VirDev on this surface
+        virtual VclPtr<VirtualDevice> createVirtualDevice() const = 0;
+
+        /// Resize the surface (possibly destroying content), only possible for X11 typically
+        /// so on failure caller must create a new surface instead
+        virtual bool Resize( int /*width*/, int /*height*/ ) { return false; }
+
+        /// Flush all pending output to surface
+        virtual void flush() const = 0;
+    };
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */