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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 <sal/types.h>
#include <tools/stream.hxx>
#include <utility>
#include <vcl/kernarray.hxx>
#include <vcl/metaactiontypes.hxx>
#include <cppcanvas/renderer.hxx>
#include <cppcanvas/canvas.hxx>
#include "canvasgraphichelper.hxx"
#include "action.hxx"
#include "outdevstate.hxx"
#include <osl/diagnose.h>
#include <memory>
#include <span>
#include <vector>
class GDIMetaFile;
class VirtualDevice;
class Gradient;
namespace tools { class Rectangle; }
namespace vcl { class Font; }
namespace tools { class PolyPolygon; }
class Point;
namespace basegfx {
class B2DPolyPolygon;
class B2DPolygon;
}
namespace cppcanvas::internal
{
struct ActionFactoryParameters;
// state stack of OutputDevice, to correctly handle
// push/pop actions
class VectorOfOutDevStates
{
public:
OutDevState& getState();
const OutDevState& getState() const;
void pushState(vcl::PushFlags nFlags);
void popState();
void clearStateStack();
private:
std::vector< OutDevState > m_aStates;
};
// EMF+
// Transformation matrix (used for Affine Transformation)
// [ eM11, eM12, eDx ]
// [ eM21, eM22, eDy ]
// [ 0, 0, 1 ]
// that consists of a linear map (eM11, eM12, eM21, eM22)
// More info: https://en.wikipedia.org/wiki/Linear_map
// followed by a translation (eDx, eDy)
struct XForm
{
float eM11; // M1,1 value in the matrix. Increases or decreases the size of the pixels horizontally.
float eM12; // M1,2 value in the matrix. This effectively angles the X axis up or down.
float eM21; // M2,1 value in the matrix. This effectively angles the Y axis left or right.
float eM22; // M2,2 value in the matrix. Increases or decreases the size of the pixels vertically.
float eDx; // Delta x (Dx) value in the matrix. Moves the whole coordinate system horizontally.
float eDy; // Delta y (Dy) value in the matrix. Moves the whole coordinate system vertically.
XForm()
{
SetIdentity ();
}
void SetIdentity ()
{
eM11 = eM22 = 1.0f;
eDx = eDy = eM12 = eM21 = 0.0f;
}
friend SvStream& ReadXForm( SvStream& rIn, XForm& rXForm )
{
if ( sizeof( float ) != 4 )
{
OSL_FAIL( "EnhWMFReader::sizeof( float ) != 4" );
rXForm = XForm();
}
else
{
rIn.ReadFloat( rXForm.eM11 ).ReadFloat( rXForm.eM12 ).ReadFloat( rXForm.eM21 ).ReadFloat( rXForm.eM22 )
.ReadFloat( rXForm.eDx ).ReadFloat( rXForm.eDy );
}
return rIn;
}
};
// EMF+
class ImplRenderer : public virtual Renderer, protected CanvasGraphicHelper
{
public:
ImplRenderer( const CanvasSharedPtr& rCanvas,
const GDIMetaFile& rMtf,
const Parameters& rParms );
virtual ~ImplRenderer() override;
virtual bool draw() const override;
virtual bool drawSubset( sal_Int32 nStartIndex,
sal_Int32 nEndIndex ) const override;
virtual ::basegfx::B2DRange getSubsetArea( sal_Int32 nStartIndex,
sal_Int32 nEndIndex ) const override;
// element of the Renderer's action vector. Need to be
// public, since some functors need it, too.
struct MtfAction
{
MtfAction( std::shared_ptr<Action> xAction,
sal_Int32 nOrigIndex ) :
mpAction(std::move( xAction )),
mnOrigIndex( nOrigIndex )
{
}
std::shared_ptr<Action> mpAction;
sal_Int32 mnOrigIndex;
};
// prefetched and prepared canvas actions
// (externally not visible)
typedef std::vector< MtfAction > ActionVector;
private:
ImplRenderer(const ImplRenderer&) = delete;
ImplRenderer& operator=( const ImplRenderer& ) = delete;
static void updateClipping( const ::basegfx::B2DPolyPolygon& rClipPoly,
const ActionFactoryParameters& rParms,
bool bIntersect );
static void updateClipping( const ::tools::Rectangle& rClipRect,
const ActionFactoryParameters& rParms,
bool bIntersect );
static css::uno::Reference<
css::rendering::XCanvasFont > createFont( double& o_rFontRotation,
const vcl::Font& rFont,
const ActionFactoryParameters& rParms );
void createActions( GDIMetaFile& rMtf,
const ActionFactoryParameters& rParms,
bool bSubsettableActions );
bool createFillAndStroke( const ::basegfx::B2DPolyPolygon& rPolyPoly,
const ActionFactoryParameters& rParms );
bool createFillAndStroke( const ::basegfx::B2DPolygon& rPoly,
const ActionFactoryParameters& rParms );
static void skipContent( GDIMetaFile& rMtf,
const char* pCommentString,
sal_Int32& io_rCurrActionIndex );
static bool isActionContained( GDIMetaFile& rMtf,
const char* pCommentString,
MetaActionType nType );
void createGradientAction( const ::tools::PolyPolygon& rPoly,
const ::Gradient& rGradient,
const ActionFactoryParameters& rParms,
bool bIsPolygonRectangle,
bool bSubsettableActions );
void createTextAction( const ::Point& rStartPoint,
const OUString& rString,
int nIndex,
int nLength,
KernArraySpan pCharWidths,
std::span<const sal_Bool> pKashidaArray,
const ActionFactoryParameters& rParms,
bool bSubsettable );
bool getSubsetIndices( sal_Int32& io_rStartIndex,
sal_Int32& io_rEndIndex,
ActionVector::const_iterator& o_rRangeBegin,
ActionVector::const_iterator& o_rRangeEnd ) const;
ActionVector maActions;
/* EMF+ */
XForm aBaseTransform;
/* EMF+ emf header info */
sal_Int32 nFrameLeft;
sal_Int32 nFrameTop;
sal_Int32 nFrameRight;
sal_Int32 nFrameBottom;
sal_Int32 nPixX;
sal_Int32 nPixY;
sal_Int32 nMmX;
sal_Int32 nMmY;
};
/// Common parameters when creating actions
struct ActionFactoryParameters
{
ActionFactoryParameters( VectorOfOutDevStates& rStates,
const CanvasSharedPtr& rCanvas,
::VirtualDevice& rVDev,
const Renderer::Parameters& rParms,
sal_Int32& io_rCurrActionIndex ) :
mrStates(rStates),
mrCanvas(rCanvas),
mrVDev(rVDev),
mrParms(rParms),
mrCurrActionIndex(io_rCurrActionIndex)
{}
VectorOfOutDevStates& mrStates;
const CanvasSharedPtr& mrCanvas;
::VirtualDevice& mrVDev;
const Renderer::Parameters& mrParms;
sal_Int32& mrCurrActionIndex;
};
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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