6588c30ed4
ScanlineFormat enum is used to indicate 2 things - scanline format type and scanline direction (TopDown or BottomUp). This makes it complex to manipulate with (using bit arithmetics) and hard to use in general for no benefit, so this commit separates direction out from the ScanlineFormat into ScanlineDirection enum. ScanlineFormat is now just a simple enum class (not a bit field). Change-Id: Iad55d0a4c8c07b71221c2facf7cf6a2d518fec0c Reviewed-on: https://gerrit.libreoffice.org/c/core/+/163943 Tested-by: Jenkins Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>
101 lines
3.5 KiB
C++
101 lines
3.5 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#pragma once
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#include <sal/config.h>
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#include <osl/endian.h>
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#include <vcl/vclptr.hxx>
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#include <config_cairo_rgba.h>
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#include <memory>
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// Using formats that match cairo's formats.
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// SVP_24BIT_FORMAT is used to store 24-bit images in 3-byte pixels to conserve memory.
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/*
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For internal cairo we have the option --enable-cairo-rgba which is potentially
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useful for Android or Online to switch the rgb components. For Android cairo then
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matches the OpenGL GL_RGBA format so we can use it there where we don't have
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GL_BGRA support. Similarly for Online we can then use cairo's pixel data
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without needing to swizzle it for use as a canvas ImageData.
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*/
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#if ENABLE_CAIRO_RGBA
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#define SVP_24BIT_FORMAT (ScanlineFormat::N24BitTcRgb)
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#define SVP_CAIRO_FORMAT (ScanlineFormat::N32BitTcRgba)
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#define SVP_CAIRO_BLUE 1
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#define SVP_CAIRO_GREEN 2
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#define SVP_CAIRO_RED 0
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#define SVP_CAIRO_ALPHA 3
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#elif defined OSL_BIGENDIAN
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#define SVP_24BIT_FORMAT (ScanlineFormat::N24BitTcRgb)
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#define SVP_CAIRO_FORMAT (ScanlineFormat::N32BitTcArgb)
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#define SVP_CAIRO_BLUE 3
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#define SVP_CAIRO_GREEN 2
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#define SVP_CAIRO_RED 1
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#define SVP_CAIRO_ALPHA 0
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#else
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#define SVP_24BIT_FORMAT (ScanlineFormat::N24BitTcBgr)
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#define SVP_CAIRO_FORMAT (ScanlineFormat::N32BitTcBgra)
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#define SVP_CAIRO_BLUE 0
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#define SVP_CAIRO_GREEN 1
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#define SVP_CAIRO_RED 2
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#define SVP_CAIRO_ALPHA 3
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#endif
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typedef struct _cairo_surface cairo_surface_t;
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typedef struct _cairo cairo_t;
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class VirtualDevice;
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namespace cairo {
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typedef std::shared_ptr<cairo_surface_t> CairoSurfaceSharedPtr;
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typedef std::shared_ptr<cairo_t> CairoSharedPtr;
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struct Surface;
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typedef std::shared_ptr<Surface> SurfaceSharedPtr;
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/** Cairo surface interface
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For each cairo-supported platform, there's an implementation of
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this interface
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*/
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struct Surface
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{
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public:
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virtual ~Surface() {}
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// Query methods
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virtual CairoSharedPtr getCairo() const = 0;
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virtual CairoSurfaceSharedPtr getCairoSurface() const = 0;
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virtual SurfaceSharedPtr getSimilar(int cairo_content_type, int width, int height) const = 0;
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/// factory for VirDev on this surface
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virtual VclPtr<VirtualDevice> createVirtualDevice() const = 0;
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/// Resize the surface (possibly destroying content), only possible for X11 typically
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/// so on failure caller must create a new surface instead
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virtual bool Resize( int /*width*/, int /*height*/ ) { return false; }
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/// Flush all pending output to surface
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virtual void flush() const = 0;
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};
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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