Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 246 insertions, 0 deletions

diff --git a/cppcanvas/source/inc/implrenderer.hxx b/cppcanvas/source/inc/implrenderer.hxx
new file mode 100644
index 000000000..44a168ee9
--- /dev/null
+++ b/cppcanvas/source/inc/implrenderer.hxx
@@ -0,0 +1,246 @@
+/* -*- 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 <o3tl/span.hxx>
+#include <tools/stream.hxx>
+#include <utility>
+#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 <vector>
+
+class GDIMetaFile;
+class VirtualDevice;
+class Gradient;
+namespace tools { class Rectangle; }
+namespace vcl { class Font; }
+namespace tools { class PolyPolygon; }
+class Point;
+class MetaCommentAction;
+
+namespace basegfx {
+    class B2DPolyPolygon;
+    class B2DPolygon;
+}
+
+namespace cppcanvas::internal
+    {
+        struct OutDevState;
+        struct ActionFactoryParameters;
+        struct XForm;
+
+        // 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,
+                                   o3tl::span<const sal_Int32>    pCharWidths,
+                                   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: */