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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/.
*
* 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: */
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