blob: 15d37b731288641e993033879a522c202115cb8d [file] [log] [blame]
// 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.
#include <memory>
#include "core/fxcrt/fx_coordinates.h"
#include "core/fxcrt/fx_memory_wrappers.h"
#include "core/fxcrt/retain_ptr.h"
#include "core/fxge/fx_dib.h"
enum FXDIB_Channel {
FXDIB_Red = 1,
class CFX_ClipRgn;
class CFX_DIBitmap;
class PauseIndicatorIface;
// Base class for all Device-Independent Bitmaps.
class CFX_DIBBase : public Retainable {
~CFX_DIBBase() override;
virtual uint8_t* GetBuffer() const;
virtual const uint8_t* GetScanline(int line) const = 0;
virtual bool SkipToScanline(int line, PauseIndicatorIface* 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;
uint8_t* GetWritableScanline(int line) {
return const_cast<uint8_t*>(GetScanline(line));
int GetWidth() const { return m_Width; }
int GetHeight() const { return m_Height; }
FXDIB_Format GetFormat() const {
return static_cast<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; }
bool IsAlphaMask() const { return !!(m_AlphaFlag & 1); }
bool HasAlpha() const { return !!(m_AlphaFlag & 2); }
bool IsCmykImage() const { return !!(m_AlphaFlag & 4); }
bool IsOpaqueImage() const { return !IsAlphaMask() && !HasAlpha(); }
size_t GetPaletteSize() const;
uint32_t GetPaletteArgb(int index) const;
void SetPaletteArgb(int index, uint32_t color);
// Copies into internally-owned palette.
void SetPalette(const uint32_t* pSrcPal);
RetainPtr<CFX_DIBitmap> Clone(const FX_RECT* pClip) const;
RetainPtr<CFX_DIBitmap> CloneConvert(FXDIB_Format format);
RetainPtr<CFX_DIBitmap> StretchTo(int dest_width,
int dest_height,
const FXDIB_ResampleOptions& options,
const FX_RECT* pClip);
RetainPtr<CFX_DIBitmap> TransformTo(const CFX_Matrix& mtDest,
int* left,
int* top);
RetainPtr<CFX_DIBitmap> SwapXY(bool bXFlip, bool bYFlip) const;
RetainPtr<CFX_DIBitmap> FlipImage(bool bXFlip, bool bYFlip) const;
RetainPtr<CFX_DIBitmap> CloneAlphaMask() const;
// Copies into internally-owned mask.
bool SetAlphaMask(const RetainPtr<CFX_DIBBase>& pAlphaMask,
const FX_RECT* pClip);
bool 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) const;
RetainPtr<CFX_DIBitmap> m_pAlphaMask;
static bool ConvertBuffer(FXDIB_Format dest_format,
uint8_t* dest_buf,
int dest_pitch,
int width,
int height,
const RetainPtr<CFX_DIBBase>& pSrcBitmap,
int src_left,
int src_top,
std::unique_ptr<uint32_t, FxFreeDeleter>* pal);
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;