/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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*
* 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
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* 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 meFormatAndAlpha;
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 );
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 .
@ param eOutDevType
This real virtual output device type .
*/
explicit VirtualDevice(const OutputDevice* pCompDev, DeviceFormat eFormat,
OutDevType eOutDevType);
public :
/** Create a virtual device of size 1x1
@ param eFormat
Device format of the generated virtual device .
*/
explicit VirtualDevice(DeviceFormat eFormat = DeviceFormat::WITHOUT_ALPHA)
: VirtualDevice(nullptr, eFormat, 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 .
*/
explicit VirtualDevice(const OutputDevice& rCompDev,
DeviceFormat eFormat = DeviceFormat::WITHOUT_ALPHA)
: VirtualDevice(&rCompDev, eFormat, 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;
bool CanAnimate() const override { return false ; }
virtual void EnableRTL( bool bEnable = true ) override;
bool SetOutputSizePixel( const Size& rNewSize, bool bErase = true , bool bAlphaMaskTransparent = false );
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
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