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Diffstat (limited to 'core/fxge/dib/cfx_dibsource.h')
| -rw-r--r-- | core/fxge/dib/cfx_dibsource.h | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/core/fxge/dib/cfx_dibsource.h b/core/fxge/dib/cfx_dibsource.h new file mode 100644 index 0000000000..76f7009502 --- /dev/null +++ b/core/fxge/dib/cfx_dibsource.h @@ -0,0 +1,176 @@ +// Copyright 2017 PDFium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com + +#ifndef CORE_FXGE_DIB_CFX_DIBSOURCE_H_ +#define CORE_FXGE_DIB_CFX_DIBSOURCE_H_ + +#include <memory> + +#include "core/fxcrt/cfx_retain_ptr.h" +#include "core/fxcrt/fx_basic.h" +#include "core/fxcrt/fx_coordinates.h" + +enum FXDIB_Channel { + FXDIB_Red = 1, + FXDIB_Green, + FXDIB_Blue, + FXDIB_Cyan, + FXDIB_Magenta, + FXDIB_Yellow, + FXDIB_Black, + FXDIB_Alpha +}; + +enum FXDIB_Format { + FXDIB_Invalid = 0, + FXDIB_1bppMask = 0x101, + FXDIB_1bppRgb = 0x001, + FXDIB_1bppCmyk = 0x401, + FXDIB_8bppMask = 0x108, + FXDIB_8bppRgb = 0x008, + FXDIB_8bppRgba = 0x208, + FXDIB_8bppCmyk = 0x408, + FXDIB_8bppCmyka = 0x608, + FXDIB_Rgb = 0x018, + FXDIB_Rgba = 0x218, + FXDIB_Rgb32 = 0x020, + FXDIB_Argb = 0x220, + FXDIB_Cmyk = 0x420, + FXDIB_Cmyka = 0x620, +}; + +#define FXDIB_DOWNSAMPLE 0x04 +#define FXDIB_INTERPOL 0x20 +#define FXDIB_BICUBIC_INTERPOL 0x80 +#define FXDIB_NOSMOOTH 0x100 +#define FXDIB_BLEND_NORMAL 0 +#define FXDIB_BLEND_MULTIPLY 1 +#define FXDIB_BLEND_SCREEN 2 +#define FXDIB_BLEND_OVERLAY 3 +#define FXDIB_BLEND_DARKEN 4 +#define FXDIB_BLEND_LIGHTEN 5 + +#define FXDIB_BLEND_COLORDODGE 6 +#define FXDIB_BLEND_COLORBURN 7 +#define FXDIB_BLEND_HARDLIGHT 8 +#define FXDIB_BLEND_SOFTLIGHT 9 +#define FXDIB_BLEND_DIFFERENCE 10 +#define FXDIB_BLEND_EXCLUSION 11 +#define FXDIB_BLEND_NONSEPARABLE 21 +#define FXDIB_BLEND_HUE 21 +#define FXDIB_BLEND_SATURATION 22 +#define FXDIB_BLEND_COLOR 23 +#define FXDIB_BLEND_LUMINOSITY 24 +#define FXDIB_BLEND_UNSUPPORTED -1 + +class CFX_ClipRgn; +class CFX_DIBitmap; + +class CFX_DIBSource : public CFX_Retainable { + public: + ~CFX_DIBSource() override; + + virtual uint8_t* GetBuffer() const; + virtual const uint8_t* GetScanline(int line) const = 0; + virtual bool SkipToScanline(int line, IFX_Pause* pPause) const; + virtual void DownSampleScanline(int line, + uint8_t* dest_scan, + int dest_bpp, + int dest_width, + bool bFlipX, + int clip_left, + int clip_width) const = 0; + + int GetWidth() const { return m_Width; } + int GetHeight() const { return m_Height; } + + FXDIB_Format GetFormat() const { + return (FXDIB_Format)(m_AlphaFlag * 0x100 + m_bpp); + } + uint32_t GetPitch() const { return m_Pitch; } + uint32_t* GetPalette() const { return m_pPalette.get(); } + int GetBPP() const { return m_bpp; } + + // TODO(thestig): Investigate this. Given the possible values of FXDIB_Format, + // it feels as though this should be implemented as !!(m_AlphaFlag & 1) and + // IsOpaqueImage() below should never be able to return true. + bool IsAlphaMask() const { return m_AlphaFlag == 1; } + bool HasAlpha() const { return !!(m_AlphaFlag & 2); } + bool IsOpaqueImage() const { return !(m_AlphaFlag & 3); } + bool IsCmykImage() const { return !!(m_AlphaFlag & 4); } + + int GetPaletteSize() const { + return IsAlphaMask() ? 0 : (m_bpp == 1 ? 2 : (m_bpp == 8 ? 256 : 0)); + } + + uint32_t GetPaletteEntry(int index) const; + + void SetPaletteEntry(int index, uint32_t color); + uint32_t GetPaletteArgb(int index) const { return GetPaletteEntry(index); } + void SetPaletteArgb(int index, uint32_t color) { + SetPaletteEntry(index, color); + } + + // Copies into internally-owned palette. + void SetPalette(const uint32_t* pSrcPal); + + CFX_RetainPtr<CFX_DIBitmap> Clone(const FX_RECT* pClip = nullptr) const; + CFX_RetainPtr<CFX_DIBitmap> CloneConvert(FXDIB_Format format); + CFX_RetainPtr<CFX_DIBitmap> StretchTo(int dest_width, + int dest_height, + uint32_t flags = 0, + const FX_RECT* pClip = nullptr); + CFX_RetainPtr<CFX_DIBitmap> TransformTo(const CFX_Matrix* pMatrix, + int& left, + int& top, + uint32_t flags = 0, + const FX_RECT* pClip = nullptr); + CFX_RetainPtr<CFX_DIBitmap> SwapXY(bool bXFlip, + bool bYFlip, + const FX_RECT* pClip = nullptr) const; + CFX_RetainPtr<CFX_DIBitmap> FlipImage(bool bXFlip, bool bYFlip) const; + + CFX_RetainPtr<CFX_DIBitmap> CloneAlphaMask( + const FX_RECT* pClip = nullptr) const; + + // Copies into internally-owned mask. + bool SetAlphaMask(const CFX_RetainPtr<CFX_DIBSource>& pAlphaMask, + const FX_RECT* pClip = nullptr); + + void GetOverlapRect(int& dest_left, + int& dest_top, + int& width, + int& height, + int src_width, + int src_height, + int& src_left, + int& src_top, + const CFX_ClipRgn* pClipRgn); + +#if defined _SKIA_SUPPORT_ || defined _SKIA_SUPPORT_PATHS_ + void DebugVerifyBitmapIsPreMultiplied(void* buffer = nullptr) const; +#endif + + CFX_RetainPtr<CFX_DIBitmap> m_pAlphaMask; + + protected: + CFX_DIBSource(); + + void BuildPalette(); + bool BuildAlphaMask(); + int FindPalette(uint32_t color) const; + void GetPalette(uint32_t* pal, int alpha) const; + + int m_Width; + int m_Height; + int m_bpp; + uint32_t m_AlphaFlag; + uint32_t m_Pitch; + // TODO(weili): Use std::vector for this. + std::unique_ptr<uint32_t, FxFreeDeleter> m_pPalette; +}; + +#endif // CORE_FXGE_DIB_CFX_DIBSOURCE_H_ |