vcl/inc/opengl/salbmp.hxx

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   2 /*
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   9  * This file incorporates work covered by the following license notice:
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  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 final : 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     bool            InterpretAs8Bit() override;
  84
  85 public:
  86
  87     void            Create( const OpenGLTexture& rTex, tools::Long nX, tools::Long nY, tools::Long nWidth, tools::Long nHeight );
  88     OpenGLTexture&  GetTexture() const;
  89     const BitmapPalette& GetBitmapPalette() const { return maPalette; }
  90
  91 private:
  92
  93     GLuint          CreateTexture();
  94     bool            AllocateUserData();
  95     void            DeallocateUserData();
  96     bool            ReadTexture();
  97
  98 private:
  99
 100     bool ImplScaleFilter( const rtl::Reference< OpenGLContext > &xContext, const double& rScaleX, const double& rScaleY, GLenum nFilter );
 101     static void ImplCreateKernel( const double& fScale, const vcl::Kernel& rKernel, GLfloat*& pWeights, sal_uInt32& aKernelSize );
 102     bool ImplScaleConvolution(const rtl::Reference< OpenGLContext > &xContext, const double& rScaleX, const double& rScaleY, const vcl::Kernel& rKernel);
 103     bool ImplScaleArea( const rtl::Reference< OpenGLContext > &xContext,
 104                         double rScaleX, double rScaleY );
 105
 106 public:
 107
 108     void ImplScale( const double& rScaleX, const double& rScaleY, BmpScaleFlag nScaleFlag );
 109 };
 110
 111 #endif // INCLUDED_VCL_INC_OPENGL_SALBMP_H
 112
 113 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */