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// Copyright 2014 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_FDE_CFDE_TEXTOUT_H_
#define XFA_FDE_CFDE_TEXTOUT_H_
#include <deque>
#include <memory>
#include <vector>
#include "core/fxcrt/cfx_char.h"
#include "core/fxge/cfx_defaultrenderdevice.h"
#include "core/fxge/cfx_renderdevice.h"
#include "core/fxge/fx_dib.h"
#include "xfa/fgas/font/cfgas_fontmgr.h"
class CFDE_RenderDevice;
class CFX_RenderDevice;
class CFX_TxtBreak;
enum class FDE_TextAlignment : uint8_t {
kTopLeft = 0,
kCenterLeft,
kCenter,
kCenterRight
};
struct FDE_TextStyle {
FDE_TextStyle()
: single_line_(false), line_wrap_(false), last_line_height_(false) {}
~FDE_TextStyle() {}
void Reset() {
single_line_ = false;
line_wrap_ = false;
last_line_height_ = false;
}
bool single_line_;
bool line_wrap_;
bool last_line_height_;
};
struct FDE_TTOPIECE {
FDE_TTOPIECE();
FDE_TTOPIECE(const FDE_TTOPIECE& that);
~FDE_TTOPIECE();
int32_t iStartChar;
int32_t iChars;
uint32_t dwCharStyles;
CFX_RectF rtPiece;
};
class CFDE_TTOLine {
public:
CFDE_TTOLine();
CFDE_TTOLine(const CFDE_TTOLine& ttoLine);
~CFDE_TTOLine();
bool GetNewReload() const { return m_bNewReload; }
void SetNewReload(bool reload) { m_bNewReload = reload; }
int32_t AddPiece(int32_t index, const FDE_TTOPIECE& ttoPiece);
int32_t GetSize() const;
FDE_TTOPIECE* GetPtrAt(int32_t index);
void RemoveLast(int32_t iCount);
private:
bool m_bNewReload;
std::deque<FDE_TTOPIECE> m_pieces;
};
class CFDE_TextOut {
public:
static bool DrawString(CFX_RenderDevice* device,
FX_ARGB color,
const RetainPtr<CFGAS_GEFont>& pFont,
FXTEXT_CHARPOS* pCharPos,
int32_t iCount,
float fFontSize,
const CFX_Matrix* pMatrix);
CFDE_TextOut();
~CFDE_TextOut();
void SetFont(const RetainPtr<CFGAS_GEFont>& pFont);
void SetFontSize(float fFontSize);
void SetTextColor(FX_ARGB color) { m_TxtColor = color; }
void SetStyles(const FDE_TextStyle& dwStyles);
void SetAlignment(FDE_TextAlignment iAlignment);
void SetLineSpace(float fLineSpace);
void SetMatrix(const CFX_Matrix& matrix) { m_Matrix = matrix; }
void SetLineBreakTolerance(float fTolerance);
void CalcLogicSize(const WideString& str, CFX_SizeF& size);
void CalcLogicSize(const WideString& str, CFX_RectF& rect);
void DrawLogicText(CFX_RenderDevice* device,
const WideStringView& str,
const CFX_RectF& rect);
int32_t GetTotalLines() const { return m_iTotalLines; }
private:
bool RetrieveLineWidth(CFX_BreakType dwBreakStatus,
float& fStartPos,
float& fWidth,
float& fHeight);
void LoadText(const WideString& str, const CFX_RectF& rect);
void Reload(const CFX_RectF& rect);
void ReloadLinePiece(CFDE_TTOLine* pLine, const CFX_RectF& rect);
bool RetrievePieces(CFX_BreakType dwBreakStatus,
int32_t& iStartChar,
int32_t& iPieceWidths,
bool bReload,
const CFX_RectF& rect);
void AppendPiece(const FDE_TTOPIECE& ttoPiece, bool bNeedReload, bool bEnd);
void DoAlignment(const CFX_RectF& rect);
int32_t GetDisplayPos(FDE_TTOPIECE* pPiece);
std::unique_ptr<CFX_TxtBreak> m_pTxtBreak;
RetainPtr<CFGAS_GEFont> m_pFont;
float m_fFontSize;
float m_fLineSpace;
float m_fLinePos;
float m_fTolerance;
FDE_TextAlignment m_iAlignment;
FDE_TextStyle m_Styles;
std::vector<int32_t> m_CharWidths;
FX_ARGB m_TxtColor;
uint32_t m_dwTxtBkStyles;
WideString m_wsText;
CFX_Matrix m_Matrix;
std::deque<CFDE_TTOLine> m_ttoLines;
int32_t m_iCurLine;
int32_t m_iCurPiece;
int32_t m_iTotalLines;
std::vector<FXTEXT_CHARPOS> m_CharPos;
};
#endif // XFA_FDE_CFDE_TEXTOUT_H_
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