vcl/inc/opengl/salbmp.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.
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   5  * This Source Code Form is subject to the terms of the Mozilla Public
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   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_VCL_INC_OPENGL_SALBMP_H
  21 #define INCLUDED_VCL_INC_OPENGL_SALBMP_H
  22
  23 #include <vcl/opengl/OpenGLContext.hxx>
  24
  25 #include <opengl/texture.hxx>
  26
  27 #include <salbmp.hxx>
  28
  29 #include <memory>
  30
  31 struct  BitmapBuffer;
  32 class   BitmapPalette;
  33 namespace vcl
  34 {
  35     class Kernel;
  36 }
  37
  38 class VCL_PLUGIN_PUBLIC OpenGLSalBitmap : public SalBitmap
  39 {
  40 private:
  41     OpenGLTexture                       maTexture;
  42     bool                                mbDirtyTexture;
  43     BitmapPalette                       maPalette;
  44     std::shared_ptr<sal_uInt8>          mpUserBuffer;
  45     sal_uInt16                          mnBits;
  46     sal_uInt32                          mnBytesPerRow;
  47     int                                 mnWidth;
  48     int                                 mnHeight;
  49
  50     virtual void updateChecksum() const override;
  51
  52     bool calcChecksumGL(OpenGLTexture& rInputTexture, BitmapChecksum& rChecksum) const;
  53
  54 public:
  55     OpenGLSalBitmap();
  56     virtual ~OpenGLSalBitmap() override;
  57
  58 public:
  59
  60     // SalBitmap methods
  61     bool            Create( const Size& rSize, sal_uInt16 nBitCount, const BitmapPalette& rPal ) override;
  62     bool            Create( const SalBitmap& rSalBmp ) override;
  63     bool            Create( const SalBitmap& rSalBmp, SalGraphics* pGraphics ) override;
  64     bool            Create( const SalBitmap& rSalBmp, sal_uInt16 nNewBitCount ) override;
  65     virtual bool    Create( const css::uno::Reference< css::rendering::XBitmapCanvas >& rBitmapCanvas,
  66                             Size& rSize,
  67                             bool bMask = false ) override;
  68
  69     void            Destroy() final override;
  70
  71     Size            GetSize() const override;
  72     sal_uInt16      GetBitCount() const override;
  73
  74     BitmapBuffer*   AcquireBuffer( BitmapAccessMode nMode ) override;
  75     void            ReleaseBuffer( BitmapBuffer* pBuffer, BitmapAccessMode nMode ) override;
  76
  77     bool            GetSystemData( BitmapSystemData& rData ) override;
  78
  79     bool            ScalingSupported() const override;
  80     bool            Scale( const double& rScaleX, const double& rScaleY, BmpScaleFlag nScaleFlag ) override;
  81     bool            Replace( const Color& rSearchColor, const Color& rReplaceColor, sal_uInt8 nTol ) override;
  82     bool            ConvertToGreyscale() override;
  83
  84 public:
  85
  86     void            Create( const OpenGLTexture& rTex, long nX, long nY, long nWidth, long nHeight );
  87     OpenGLTexture&  GetTexture() const;
  88     const BitmapPalette& GetBitmapPalette() const { return maPalette; }
  89
  90 private:
  91
  92     GLuint          CreateTexture();
  93     bool            AllocateUserData();
  94     void            DeallocateUserData();
  95     bool            ReadTexture();
  96
  97 private:
  98
  99     bool ImplScaleFilter( const rtl::Reference< OpenGLContext > &xContext, const double& rScaleX, const double& rScaleY, GLenum nFilter );
 100     static void ImplCreateKernel( const double& fScale, const vcl::Kernel& rKernel, GLfloat*& pWeights, sal_uInt32& aKernelSize );
 101     bool ImplScaleConvolution(const rtl::Reference< OpenGLContext > &xContext, const double& rScaleX, const double& rScaleY, const vcl::Kernel& rKernel);
 102     bool ImplScaleArea( const rtl::Reference< OpenGLContext > &xContext,
 103                         double rScaleX, double rScaleY );
 104
 105 public:
 106
 107     void ImplScale( const double& rScaleX, const double& rScaleY, BmpScaleFlag nScaleFlag );
 108 };
 109
 110 #endif // INCLUDED_VCL_INC_OPENGL_SALBMP_H
 111
 112 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */