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// 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 XFA_FGAS_LAYOUT_CFX_BREAK_H_
#define XFA_FGAS_LAYOUT_CFX_BREAK_H_
#include <stdint.h>
#include "core/fxcrt/retain_ptr.h"
#include "core/fxcrt/unowned_ptr.h"
#include "xfa/fgas/layout/cfx_breakline.h"
class CFGAS_GEFont;
struct FX_TPO {
bool operator<(const FX_TPO& that) const { return pos < that.pos; }
int32_t index;
int32_t pos;
};
enum FX_LAYOUTSTYLE {
FX_LAYOUTSTYLE_None = 0,
FX_LAYOUTSTYLE_Pagination = 0x01,
FX_LAYOUTSTYLE_ExpandTab = 0x10,
FX_LAYOUTSTYLE_SingleLine = 0x200,
FX_LAYOUTSTYLE_CombText = 0x400
};
class CFX_Break {
public:
virtual ~CFX_Break();
void Reset();
void SetLayoutStyles(uint32_t dwLayoutStyles);
uint32_t GetLayoutStyles() const { return m_dwLayoutStyles; }
void SetFont(const RetainPtr<CFGAS_GEFont>& pFont);
void SetFontSize(float fFontSize);
void SetTabWidth(float fTabWidth);
int32_t GetTabWidth() const { return m_iTabWidth; }
void SetHorizontalScale(int32_t iScale);
void SetVerticalScale(int32_t iScale);
void SetLineBreakTolerance(float fTolerance);
void SetLineBoundary(float fLineStart, float fLineEnd);
void SetCharSpace(float fCharSpace);
void SetParagraphBreakChar(wchar_t wch);
void SetDefaultChar(wchar_t wch);
int32_t CountBreakPieces() const;
const CFX_BreakPiece* GetBreakPieceUnstable(int32_t index) const;
void ClearBreakPieces();
CFX_Char* GetLastChar(int32_t index, bool bOmitChar, bool bRichText) const;
const CFX_BreakLine* GetCurrentLineForTesting() const {
return m_pCurLine.Get();
}
protected:
static const int kMinimumTabWidth;
static const float kConversionFactor;
explicit CFX_Break(uint32_t dwLayoutStyles);
void SetBreakStatus();
bool HasLine() const { return m_iReadyLineIndex >= 0; }
FX_CHARTYPE GetUnifiedCharType(FX_CHARTYPE dwType) const;
FX_CHARTYPE m_eCharType = FX_CHARTYPE_Unknown;
bool m_bSingleLine = false;
bool m_bCombText = false;
uint32_t m_dwIdentity = 0;
uint32_t m_dwLayoutStyles = 0;
int32_t m_iLineStart = 0;
int32_t m_iLineWidth = 2000000;
wchar_t m_wParagraphBreakChar = L'\n';
int32_t m_iFontSize = 240;
int32_t m_iTabWidth = 720000;
int32_t m_iHorizontalScale = 100;
int32_t m_iVerticalScale = 100;
int32_t m_iTolerance = 0;
int32_t m_iCharSpace = 0;
int32_t m_iDefChar = 0;
wchar_t m_wDefChar = 0xFEFF;
RetainPtr<CFGAS_GEFont> m_pFont;
UnownedPtr<CFX_BreakLine> m_pCurLine;
int8_t m_iReadyLineIndex = -1;
CFX_BreakLine m_Line[2];
private:
void FontChanged();
};
#endif // XFA_FGAS_LAYOUT_CFX_BREAK_H_
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