95 lines
2.7 KiB
C++
95 lines
2.7 KiB
C++
// Copyright 2017 The PDFium Authors
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
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#ifndef XFA_FGAS_LAYOUT_CFGAS_BREAK_H_
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#define XFA_FGAS_LAYOUT_CFGAS_BREAK_H_
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#include <stdint.h>
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#include "core/fxcrt/mask.h"
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#include "core/fxcrt/retain_ptr.h"
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#include "core/fxcrt/unowned_ptr.h"
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#include "xfa/fgas/layout/cfgas_breakline.h"
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class CFGAS_GEFont;
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class CFGAS_Break {
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public:
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enum class LayoutStyle : uint8_t {
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kNone = 0,
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kPagination = 1 << 0,
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kExpandTab = 1 << 1,
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kSingleLine = 1 << 2,
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kCombText = 1 << 3,
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};
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virtual ~CFGAS_Break();
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void Reset();
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void SetLayoutStyles(Mask<LayoutStyle> dwLayoutStyles);
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Mask<LayoutStyle> GetLayoutStyles() const { return m_dwLayoutStyles; }
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void SetFont(RetainPtr<CFGAS_GEFont> pFont);
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void SetFontSize(float fFontSize);
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void SetTabWidth(float fTabWidth);
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int32_t GetTabWidth() const { return m_iTabWidth; }
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void SetHorizontalScale(int32_t iScale);
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void SetVerticalScale(int32_t iScale);
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void SetLineBreakTolerance(float fTolerance);
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void SetLineBoundary(float fLineStart, float fLineEnd);
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void SetCharSpace(float fCharSpace);
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void SetParagraphBreakChar(wchar_t wch);
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int32_t CountBreakPieces() const;
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const CFGAS_BreakPiece* GetBreakPieceUnstable(int32_t index) const;
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void ClearBreakPieces();
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CFGAS_Char* GetLastChar(int32_t index, bool bOmitChar, bool bRichText) const;
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const CFGAS_BreakLine* GetCurrentLineForTesting() const { return m_pCurLine; }
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protected:
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struct TPO {
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bool operator<(const TPO& that) const { return pos < that.pos; }
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int32_t index;
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int32_t pos;
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};
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static const int kMinimumTabWidth;
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static const float kConversionFactor;
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explicit CFGAS_Break(Mask<LayoutStyle> dwLayoutStyles);
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void SetBreakStatus();
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bool HasLine() const { return m_iReadyLineIndex >= 0; }
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bool IsGreaterThanLineWidth(int32_t width) const;
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FX_CHARTYPE GetUnifiedCharType(FX_CHARTYPE dwType) const;
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FX_CHARTYPE m_eCharType = FX_CHARTYPE::kUnknown;
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bool m_bSingleLine = false;
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bool m_bCombText = false;
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Mask<LayoutStyle> m_dwLayoutStyles = LayoutStyle::kNone;
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uint32_t m_dwIdentity = 0;
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int32_t m_iLineStart = 0;
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int32_t m_iLineWidth = 2000000;
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wchar_t m_wParagraphBreakChar = L'\n';
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int32_t m_iFontSize = 240;
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int32_t m_iTabWidth = 720000;
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int32_t m_iHorizontalScale = 100;
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int32_t m_iVerticalScale = 100;
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int32_t m_iTolerance = 0;
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int32_t m_iCharSpace = 0;
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RetainPtr<CFGAS_GEFont> m_pFont;
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UnownedPtr<CFGAS_BreakLine> m_pCurLine;
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int8_t m_iReadyLineIndex = -1;
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CFGAS_BreakLine m_Lines[2];
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};
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#endif // XFA_FGAS_LAYOUT_CFGAS_BREAK_H_
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