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Diffstat (limited to 'include/vcl/virdev.hxx')
| -rw-r--r-- | include/vcl/virdev.hxx | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/include/vcl/virdev.hxx b/include/vcl/virdev.hxx new file mode 100644 index 000000000..b611e7f8a --- /dev/null +++ b/include/vcl/virdev.hxx @@ -0,0 +1,189 @@ +/* -*- 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 . + */ + +#ifndef INCLUDED_VCL_VIRDEV_HXX +#define INCLUDED_VCL_VIRDEV_HXX + +#include <vcl/dllapi.h> +#include <vcl/outdev.hxx> +#include <vcl/salgtype.hxx> +#include <memory> + +class SalVirtualDevice; +struct SystemGraphicsData; +typedef struct _cairo_surface cairo_surface_t; + +class SAL_WARN_UNUSED VCL_DLLPUBLIC VirtualDevice : public OutputDevice +{ + friend class Application; + friend class ::OutputDevice; + friend class Printer; + friend cairo_surface_t* get_underlying_cairo_surface(const VirtualDevice&); +public: + // reference device modes for different compatibility levels + enum class RefDevMode { NONE = 0, + Dpi600 = 1, // 600 dpi + MSO1 = 3, + PDF1 = 4, + Custom = 5 + }; + +private: + std::unique_ptr<SalVirtualDevice> mpVirDev; + VclPtr<VirtualDevice> mpPrev; + VclPtr<VirtualDevice> mpNext; + sal_uInt16 mnBitCount; + bool mbScreenComp; + const DeviceFormat meFormat; + const DeviceFormat meAlphaFormat; + RefDevMode meRefDevMode; + bool mbForceZeroExtleadBug; + + SAL_DLLPRIVATE void ImplInitVirDev( const OutputDevice* pOutDev, tools::Long nDX, tools::Long nDY, const SystemGraphicsData *pData = nullptr ); + SAL_DLLPRIVATE bool InnerImplSetOutputSizePixel( const Size& rNewSize, bool bErase, + sal_uInt8* pBuffer ); + SAL_DLLPRIVATE bool ImplSetOutputSizePixel( const Size& rNewSize, bool bErase, + sal_uInt8* pBuffer ); + + VirtualDevice (const VirtualDevice &) = delete; + VirtualDevice & operator= (const VirtualDevice &) = delete; + + /** Used for alpha VDev, to set areas to opaque + + @since \#i32109# + */ + SAL_DLLPRIVATE void ImplFillOpaqueRectangle( const tools::Rectangle& rRect ); + +protected: + virtual bool AcquireGraphics() const override; + virtual void ReleaseGraphics( bool bRelease = true ) override; + + /** Create a virtual device of size 1x1 + + @param pCompDev + The generated vdev will be compatible to this device. + If it's the nullptr, it uses Application::GetDefaultDevice(). + + @param eFormat + Device format of the generated virtual device. Use DeviceFormat::DEFAULT here, to + indicate: take default screen depth. + + @param eAlphaFormat + Device format of the generated virtual device. Use DeviceFormat::DEFAULT here, to + indicate: take default screen depth. + + @param eOutDevType + This real virtual output device type. + */ + explicit VirtualDevice(const OutputDevice* pCompDev, DeviceFormat eFormat, + DeviceFormat eAlphaFormat, OutDevType eOutDevType); + +public: + + /** Create a virtual device of size 1x1 + + @param eFormat + Device format of the generated virtual device. Use DeviceFormat::DEFAULT here, to + indicate: take default screen depth. + + @param eAlphaFormat + Device format of the generated virtual device. Use DeviceFormat::DEFAULT here, to + indicate: take default screen depth. + */ + explicit VirtualDevice(DeviceFormat eFormat = DeviceFormat::DEFAULT, DeviceFormat eAlphaFormat = DeviceFormat::NONE) + : VirtualDevice(nullptr, eFormat, eAlphaFormat, OUTDEV_VIRDEV) {} + + /** Create a virtual device of size 1x1 + + @param rCompDev + The generated vdev will be compatible to this device. + + @param eFormat + Device format of the generated virtual device. Use DeviceFormat::DEFAULT here, to + indicate: take default screen depth. + */ + explicit VirtualDevice(const OutputDevice& rCompDev, + DeviceFormat eFormat = DeviceFormat::DEFAULT) + : VirtualDevice(&rCompDev, eFormat, DeviceFormat::NONE, OUTDEV_VIRDEV) {} + + /** Create a virtual device of size 1x1 with alpha channel + + @param rCompDev + The generated vdev will be compatible to this device. + + @param eFormat + Device format of the generated virtual device. Use DeviceFormat::DEFAULT here, to + indicate: take default screen depth. + + @param eAlphaFormat + Device format of the generated virtual device. Use DeviceFormat::DEFAULT here, to + indicate: take default screen depth. + */ + explicit VirtualDevice(const OutputDevice& rCompDev, + DeviceFormat eFormat, DeviceFormat eAlphaFormat) + : VirtualDevice(&rCompDev, eFormat, eAlphaFormat, OUTDEV_VIRDEV) {} + + /** Create a virtual device using an existing system dependent device or graphics context + Any rendering will happen directly on the context and not on any intermediate bitmap. + Note: This might not be supported on all platforms ! + */ + explicit VirtualDevice(const SystemGraphicsData& rData, const Size &rSize, + DeviceFormat eFormat); + + virtual ~VirtualDevice() override; + virtual void dispose() override; + + bool CanEnableNativeWidget() const override; + + virtual void EnableRTL( bool bEnable = true ) override; + + bool SetOutputSizePixel( const Size& rNewSize, bool bErase = true ); + bool SetOutputSizePixelScaleOffsetAndLOKBuffer( const Size& rNewSize, + const Fraction& rScale, + const Point& rNewOffset, + sal_uInt8* pBuffer); + + bool SetOutputSize( const Size& rNewSize ) + { return SetOutputSizePixel( LogicToPixel( rNewSize ) ); } + + void SetReferenceDevice( RefDevMode ); + + void Compat_ZeroExtleadBug(); // enable workaround for #i60495# + + void SetReferenceDevice( sal_Int32 i_nDPIX, sal_Int32 i_nDPIY ); + + virtual sal_uInt16 GetBitCount() const override; + + bool IsVirtual() const override; + + bool IsScreenComp() const override { return mbScreenComp; } + +private: + SAL_DLLPRIVATE void ImplSetReferenceDevice( RefDevMode, sal_Int32 i_nDPIX, sal_Int32 i_nDPIY ); + +protected: + virtual bool UsePolyPolygonForComplexGradient() override; + + virtual tools::Long GetFontExtLeading() const override; + +}; + +#endif // INCLUDED_VCL_VIRDEV_HXX + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |