canvas/source/vcl/impltools.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 #pragma once
  21
  22 #include <osl/mutex.hxx>
  23
  24 #include <vcl/svapp.hxx>
  25 #include <vcl/outdev.hxx>
  26
  27 #include <basegfx/polygon/b2dpolypolygon.hxx>
  28
  29 #include <com/sun/star/uno/Reference.hxx>
  30
  31 #include "outdevprovider.hxx"
  32
  33
  34 class OutputDevice;
  35 class Point;
  36 class Size;
  37
  38 namespace basegfx
  39 {
  40     namespace matrix
  41     {
  42         class B2DHomMatrix;
  43     }
  44 }
  45
  46 namespace com::sun::star::awt
  47 {
  48     struct Point;
  49     struct Size;
  50     struct Rectangle;
  51 }
  52
  53 namespace com::sun::star::drawing
  54 {
  55     struct HomogenMatrix3;
  56 }
  57
  58 namespace com::sun::star::geometry
  59 {
  60     struct RealPoint2D;
  61     struct RealSize2D;
  62     struct RealRectangle2D;
  63     struct Matrix2D;
  64 }
  65
  66 namespace com::sun::star::rendering
  67 {
  68     struct RenderState;
  69     struct ViewState;
  70     class  XBitmap;
  71 }
  72
  73
  74 namespace vclcanvas
  75 {
  76     namespace tools
  77     {
  78         ::BitmapEx
  79         bitmapExFromXBitmap( const css::uno::Reference<
  80                              css::rendering::XBitmap >& );
  81
  82         /** Setup VCL font and output position
  83
  84             @returns false, if no text output should happen
  85          */
  86         bool setupFontTransform( ::Point&                              o_rPoint,
  87                                  vcl::Font&                            io_rVCLFont,
  88                                  const css::rendering::ViewState&      viewState,
  89                                  const css::rendering::RenderState&    renderState,
  90                                  ::OutputDevice const &                rOutDev );
  91
  92         void setupFontWidth(const css::geometry::Matrix2D& rFontMatrix,
  93                             vcl::Font&                     rFont,
  94                             OutputDevice&                  rOutDev);
  95
  96         /** Predicate, to determine whether polygon is actually an axis-aligned rectangle
  97
  98             @return true, if the polygon is a rectangle.
  99          */
 100         bool isRectangle( const ::tools::PolyPolygon& rPolyPoly );
 101
 102
 103         // Little helper to encapsulate locking into policy class
 104         class LocalGuard
 105         {
 106         public:
 107             LocalGuard() :
 108                 aSolarGuard()
 109             {
 110             }
 111
 112             /// To be compatible with CanvasBase mutex concept
 113             explicit LocalGuard( const ::osl::Mutex& ) :
 114                 aSolarGuard()
 115             {
 116             }
 117
 118         private:
 119             SolarMutexGuard aSolarGuard;
 120         };
 121
 122         class OutDevStateKeeper
 123         {
 124         public:
 125             explicit OutDevStateKeeper( OutputDevice& rOutDev ) :
 126                 mpOutDev( &rOutDev ),
 127                 mbMappingWasEnabled( mpOutDev->IsMapModeEnabled() ),
 128                 mnAntiAliasing( mpOutDev->GetAntialiasing() )
 129             {
 130                 init();
 131             }
 132
 133             explicit OutDevStateKeeper( const OutDevProviderSharedPtr& rOutDev ) :
 134                 mpOutDev( rOutDev ? &(rOutDev->getOutDev()) : nullptr ),
 135                 mbMappingWasEnabled( mpOutDev && mpOutDev->IsMapModeEnabled() ),
 136                 mnAntiAliasing( mpOutDev ? mpOutDev->GetAntialiasing() : AntialiasingFlags::NONE )
 137             {
 138                 init();
 139             }
 140
 141             ~OutDevStateKeeper()
 142             {
 143                 if( mpOutDev )
 144                 {
 145                     mpOutDev->EnableMapMode( mbMappingWasEnabled );
 146                     mpOutDev->SetAntialiasing( mnAntiAliasing );
 147
 148                     mpOutDev->Pop();
 149                 }
 150             }
 151
 152         private:
 153             void init()
 154             {
 155                 if( mpOutDev )
 156                 {
 157                     mpOutDev->Push();
 158                     mpOutDev->EnableMapMode(false);
 159                     mpOutDev->SetAntialiasing( AntialiasingFlags::Enable );
 160                 }
 161             }
 162
 163             VclPtr<OutputDevice>    mpOutDev;
 164             const bool              mbMappingWasEnabled;
 165             const AntialiasingFlags mnAntiAliasing;
 166         };
 167
 168         ::Point mapRealPoint2D( const css::geometry::RealPoint2D&  rPoint,
 169                                 const css::rendering::ViewState&   rViewState,
 170                                 const css::rendering::RenderState& rRenderState );
 171
 172         ::tools::PolyPolygon mapPolyPolygon( const ::basegfx::B2DPolyPolygon&                          rPoly,
 173                                       const css::rendering::ViewState&     rViewState,
 174                                       const css::rendering::RenderState&   rRenderState );
 175
 176         ::BitmapEx transformBitmap( const BitmapEx&                                     rBitmap,
 177                                     const ::basegfx::B2DHomMatrix&                      rTransform );
 178
 179         void SetDefaultDeviceAntiAliasing( OutputDevice* pDevice );
 180     }
 181 }
 182
 183 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */