drawinglayer/source/processor2d/vclmetafileprocessor2d.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #ifndef INCLUDED_DRAWINGLAYER_SOURCE_PROCESSOR2D_VCLMETAFILEPROCESSOR2D_HXX
  21 #define INCLUDED_DRAWINGLAYER_SOURCE_PROCESSOR2D_VCLMETAFILEPROCESSOR2D_HXX
  22
  23 #include <drawinglayer/drawinglayerdllapi.h>
  24
  25 #include "vclprocessor2d.hxx"
  26 #include <com/sun/star/i18n/XBreakIterator.hpp>
  27 #include <basegfx/polygon/b2dpolypolygon.hxx>
  28
  29
  30 // vcl::PDFExtOutDevData support
  31
  32 #include <vcl/pdfextoutdevdata.hxx>
  33
  34
  35 // predefines
  36
  37 class GDIMetaFile;
  38 class Rectangle;
  39 class Gradient;
  40 class SvtGraphicFill;
  41 class SvtGraphicStroke;
  42
  43 namespace drawinglayer { namespace attribute {
  44     class FillGradientAttribute;
  45     class LineAttribute;
  46     class StrokeAttribute;
  47     class LineStartEndAttribute;
  48 }}
  49
  50 namespace basegfx {
  51     class BColor;
  52 }
  53
  54
  55 namespace drawinglayer
  56 {
  57     namespace processor2d
  58     {
  59         /** VclMetafileProcessor2D class
  60
  61             This processor derived from VclProcessor2D is the base class for rendering
  62             all feeded primitives to a classical VCL-Metafile, including all over the
  63             time grown extra data in comments and PDF exception data creations. Also
  64             printing needs some exception stuff.
  65
  66             All in all it is needed to emulate the old ::paint output from the old
  67             Drawinglayer as long as exporters and/or filters still use the Metafile
  68             and the extra-data added to it (which can be seen mostly as 'extensions'
  69             or simply as 'hacks').
  70          */
  71         class VclMetafileProcessor2D : public VclProcessor2D
  72         {
  73         private:
  74             /// local helper(s)
  75             Rectangle impDumpToMetaFile(
  76                 const primitive2d::Primitive2DContainer& rContent,
  77                 GDIMetaFile& o_rContentMetafile);
  78             void impConvertFillGradientAttributeToVCLGradient(
  79                 Gradient& o_rVCLGradient,
  80                 const attribute::FillGradientAttribute& rFiGrAtt,
  81                 bool bIsTransparenceGradient);
  82             void impStartSvtGraphicFill(SvtGraphicFill* pSvtGraphicFill);
  83             void impEndSvtGraphicFill(SvtGraphicFill* pSvtGraphicFill);
  84             SvtGraphicStroke* impTryToCreateSvtGraphicStroke(
  85                 const basegfx::B2DPolygon& rB2DPolygon,
  86                 const basegfx::BColor* pColor,
  87                 const attribute::LineAttribute* pLineAttribute,
  88                 const attribute::StrokeAttribute* pStrokeAttribute,
  89                 const attribute::LineStartEndAttribute* pStart,
  90                 const attribute::LineStartEndAttribute* pEnd);
  91             void impStartSvtGraphicStroke(SvtGraphicStroke* pSvtGraphicStroke);
  92             void impEndSvtGraphicStroke(SvtGraphicStroke* pSvtGraphicStroke);
  93
  94             /// Convert the fWidth to the same space as its coordinates.
  95             double getTransformedLineWidth( double fWidth ) const;
  96
  97             /// the current clipping tools::PolyPolygon from MaskPrimitive2D
  98             basegfx::B2DPolyPolygon             maClipPolyPolygon;
  99
 100             /// the target MetaFile
 101             GDIMetaFile*                        mpMetaFile;
 102
 103             /*  do not allow embedding SvtGraphicFills into each other,
 104                 use a counter to prevent that
 105              */
 106             sal_uInt32                          mnSvtGraphicFillCount;
 107
 108             /// same for SvtGraphicStroke
 109             sal_uInt32                          mnSvtGraphicStrokeCount;
 110
 111             /*  hold the last unified transparence value to have it handy
 112                 on SvtGraphicStroke creation
 113              */
 114             double                              mfCurrentUnifiedTransparence;
 115
 116             /*  break iterator support
 117                 made static so it only needs to be fetched once, even with many single
 118                 constructed VclMetafileProcessor2D. It's still incarnated on demand,
 119                 but exists for OOo runtime now by purpose.
 120              */
 121             static css::uno::Reference< css::i18n::XBreakIterator >   mxBreakIterator;
 122
 123             /*  vcl::PDFExtOutDevData support
 124                 For the first step, some extra actions at vcl::PDFExtOutDevData need to
 125                 be emulated with the VclMetafileProcessor2D. These are potentially temporarily
 126                 since PDF export may use PrimitiveSequences one day directly.
 127              */
 128             vcl::PDFExtOutDevData*              mpPDFExtOutDevData;
 129
 130         protected:
 131             /*  the local processor for BasePrimitive2D-Implementation based primitives,
 132                 called from the common process()-implementation
 133              */
 134             virtual void processBasePrimitive2D(const primitive2d::BasePrimitive2D& rCandidate) override;
 135
 136         public:
 137             /// constructor/destructor
 138             VclMetafileProcessor2D(
 139                 const geometry::ViewInformation2D& rViewInformation,
 140                 OutputDevice& rOutDev);
 141             virtual ~VclMetafileProcessor2D();
 142         };
 143     } // end of namespace processor2d
 144 } // end of namespace drawinglayer
 145
 146
 147 #endif // INCLUDED_DRAWINGLAYER_SOURCE_PROCESSOR2D_VCLMETAFILEPROCESSOR2D_HXX
 148
 149 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */