summaryrefslogtreecommitdiff
path: root/core/include/fxcrt
diff options
context:
space:
mode:
Diffstat (limited to 'core/include/fxcrt')
-rw-r--r--core/include/fxcrt/fx_arb.h24
-rw-r--r--core/include/fxcrt/fx_bidi.h59
-rw-r--r--core/include/fxcrt/fx_ucd.h114
3 files changed, 88 insertions, 109 deletions
diff --git a/core/include/fxcrt/fx_arb.h b/core/include/fxcrt/fx_arb.h
deleted file mode 100644
index 0f6de64b32..0000000000
--- a/core/include/fxcrt/fx_arb.h
+++ /dev/null
@@ -1,24 +0,0 @@
-// 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 CORE_INCLUDE_FXCRT_FX_ARB_H_
-#define CORE_INCLUDE_FXCRT_FX_ARB_H_
-
-#include "fx_system.h"
-
-class IFX_BidiChar {
- public:
- static IFX_BidiChar* Create();
- virtual ~IFX_BidiChar() {}
-
- virtual void SetPolicy(FX_BOOL bSeparateNeutral = TRUE) = 0;
- virtual FX_BOOL AppendChar(FX_WCHAR wch) = 0;
- virtual FX_BOOL EndChar() = 0;
- virtual int32_t GetBidiInfo(int32_t& iStart, int32_t& iCount) = 0;
- virtual void Reset() = 0;
-};
-
-#endif // CORE_INCLUDE_FXCRT_FX_ARB_H_
diff --git a/core/include/fxcrt/fx_bidi.h b/core/include/fxcrt/fx_bidi.h
new file mode 100644
index 0000000000..a55ce6cfd2
--- /dev/null
+++ b/core/include/fxcrt/fx_bidi.h
@@ -0,0 +1,59 @@
+// 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 CORE_INCLUDE_FXCRT_FX_BIDI_H_
+#define CORE_INCLUDE_FXCRT_FX_BIDI_H_
+
+#include "fx_system.h"
+
+// Processes characters and group them into segments based on text direction.
+class CFX_BidiChar {
+ public:
+ enum Direction { NEUTRAL, LEFT, RIGHT };
+
+ CFX_BidiChar();
+ ~CFX_BidiChar();
+
+ // Append a character and classify it as left, right, or neutral.
+ // Returns true if the character has a different direction than the
+ // existing direction to indicate there is a segment to process.
+ bool AppendChar(FX_WCHAR wch);
+
+ // Call this after the last character has been appended. AppendChar()
+ // must not be called after this.
+ // Returns true if there is still a segment to process.
+ bool EndChar();
+
+ // Get information about the segment to process.
+ // The segment's start position and character count is returned in |iStart|
+ // and |iCount|, respectively. Pass in null pointers if the information is
+ // not needed.
+ // Returns the segment direction.
+ Direction GetBidiInfo(int32_t* iStart, int32_t* iCount) const;
+
+ private:
+ void SaveCurrentStateToLastState();
+
+ // Position of the current segment.
+ int32_t m_iCurStart;
+
+ // Number of characters in the current segment.
+ int32_t m_iCurCount;
+
+ // Direction of the current segment.
+ Direction m_CurBidi;
+
+ // Number of characters in the last segment.
+ int32_t m_iLastStart;
+
+ // Number of characters in the last segment.
+ int32_t m_iLastCount;
+
+ // Direction of the last segment.
+ Direction m_LastBidi;
+};
+
+#endif // CORE_INCLUDE_FXCRT_FX_BIDI_H_
diff --git a/core/include/fxcrt/fx_ucd.h b/core/include/fxcrt/fx_ucd.h
index 8bc5930dd4..62c2dfdf67 100644
--- a/core/include/fxcrt/fx_ucd.h
+++ b/core/include/fxcrt/fx_ucd.h
@@ -9,97 +9,41 @@
#include "fx_system.h"
-enum FX_CHARBREAKPROP {
- FX_CBP_OP = 0,
- FX_CBP_CL = 1,
- FX_CBP_QU = 2,
- FX_CBP_GL = 3,
- FX_CBP_NS = 4,
- FX_CBP_EX = 5,
- FX_CBP_SY = 6,
- FX_CBP_IS = 7,
- FX_CBP_PR = 8,
- FX_CBP_PO = 9,
- FX_CBP_NU = 10,
- FX_CBP_AL = 11,
- FX_CBP_ID = 12,
- FX_CBP_IN = 13,
- FX_CBP_HY = 14,
- FX_CBP_BA = 15,
- FX_CBP_BB = 16,
- FX_CBP_B2 = 17,
- FX_CBP_ZW = 18,
- FX_CBP_CM = 19,
- FX_CBP_WJ = 20,
- FX_CBP_H2 = 21,
- FX_CBP_H3 = 22,
- FX_CBP_JL = 23,
- FX_CBP_JV = 24,
- FX_CBP_JT = 25,
-
- FX_CBP_BK = 26,
- FX_CBP_CR = 27,
- FX_CBP_LF = 28,
- FX_CBP_NL = 29,
- FX_CBP_SA = 30,
- FX_CBP_SG = 31,
- FX_CBP_CB = 32,
- FX_CBP_XX = 33,
- FX_CBP_AI = 34,
- FX_CBP_SP = 35,
- FX_CBP_TB = 37,
- FX_CBP_NONE = 36,
-};
#define FX_BIDICLASSBITS 6
#define FX_BIDICLASSBITSMASK (31 << FX_BIDICLASSBITS)
enum FX_BIDICLASS {
- FX_BIDICLASS_ON = 0,
- FX_BIDICLASS_L = 1,
- FX_BIDICLASS_R = 2,
- FX_BIDICLASS_AN = 3,
- FX_BIDICLASS_EN = 4,
- FX_BIDICLASS_AL = 5,
- FX_BIDICLASS_NSM = 6,
- FX_BIDICLASS_CS = 7,
- FX_BIDICLASS_ES = 8,
- FX_BIDICLASS_ET = 9,
- FX_BIDICLASS_BN = 10,
- FX_BIDICLASS_S = 11,
- FX_BIDICLASS_WS = 12,
- FX_BIDICLASS_B = 13,
- FX_BIDICLASS_RLO = 14,
- FX_BIDICLASS_RLE = 15,
- FX_BIDICLASS_LRO = 16,
- FX_BIDICLASS_LRE = 17,
- FX_BIDICLASS_PDF = 18,
+ FX_BIDICLASS_ON = 0, // Other Neutral
+ FX_BIDICLASS_L = 1, // Left Letter
+ FX_BIDICLASS_R = 2, // Right Letter
+ FX_BIDICLASS_AN = 3, // Arabic Number
+ FX_BIDICLASS_EN = 4, // European Number
+ FX_BIDICLASS_AL = 5, // Arabic Letter
+ FX_BIDICLASS_NSM = 6, // Non-spacing Mark
+ FX_BIDICLASS_CS = 7, // Common Number Separator
+ FX_BIDICLASS_ES = 8, // European Separator
+ FX_BIDICLASS_ET = 9, // European Number Terminator
+ FX_BIDICLASS_BN = 10, // Boundary Neutral
+ FX_BIDICLASS_S = 11, // Segment Separator
+ FX_BIDICLASS_WS = 12, // Whitespace
+ FX_BIDICLASS_B = 13, // Paragraph Separator
+ FX_BIDICLASS_RLO = 14, // Right-to-Left Override
+ FX_BIDICLASS_RLE = 15, // Right-to-Left Embedding
+ FX_BIDICLASS_LRO = 16, // Left-to-Right Override
+ FX_BIDICLASS_LRE = 17, // Left-to-Right Embedding
+ FX_BIDICLASS_PDF = 18, // Pop Directional Format
FX_BIDICLASS_N = FX_BIDICLASS_ON,
};
-#define FX_CHARTYPEBITS 11
-#define FX_CHARTYPEBITSMASK (15 << FX_CHARTYPEBITS)
-enum FX_CHARTYPE {
- FX_CHARTYPE_Unknown = 0,
- FX_CHARTYPE_Tab = (1 << FX_CHARTYPEBITS),
- FX_CHARTYPE_Space = (2 << FX_CHARTYPEBITS),
- FX_CHARTYPE_Control = (3 << FX_CHARTYPEBITS),
- FX_CHARTYPE_Combination = (4 << FX_CHARTYPEBITS),
- FX_CHARTYPE_Numeric = (5 << FX_CHARTYPEBITS),
- FX_CHARTYPE_Normal = (6 << FX_CHARTYPEBITS),
- FX_CHARTYPE_ArabicAlef = (7 << FX_CHARTYPEBITS),
- FX_CHARTYPE_ArabicSpecial = (8 << FX_CHARTYPEBITS),
- FX_CHARTYPE_ArabicDistortion = (9 << FX_CHARTYPEBITS),
- FX_CHARTYPE_ArabicNormal = (10 << FX_CHARTYPEBITS),
- FX_CHARTYPE_ArabicForm = (11 << FX_CHARTYPEBITS),
- FX_CHARTYPE_Arabic = (12 << FX_CHARTYPEBITS),
-};
+
+extern const FX_DWORD kTextLayoutCodeProperties[];
+extern const size_t kTextLayoutCodePropertiesSize;
+
+extern const FX_WCHAR kFXTextLayoutVerticalMirror[];
+extern const size_t kFXTextLayoutVerticalMirrorSize;
+
+extern const FX_WCHAR kFXTextLayoutBidiMirror[];
+extern const size_t kFXTextLayoutBidiMirrorSize;
+
FX_DWORD FX_GetUnicodeProperties(FX_WCHAR wch);
-FX_BOOL FX_IsCtrlCode(FX_WCHAR ch);
-FX_BOOL FX_IsRotationCode(FX_WCHAR ch);
-FX_BOOL FX_IsCombinationChar(FX_WCHAR wch);
-FX_BOOL FX_IsBidiChar(FX_WCHAR wch);
FX_WCHAR FX_GetMirrorChar(FX_WCHAR wch, FX_BOOL bRTL, FX_BOOL bVertical);
-FX_WCHAR FX_GetMirrorChar(FX_WCHAR wch,
- FX_DWORD dwProps,
- FX_BOOL bRTL,
- FX_BOOL bVertical);
#endif // CORE_INCLUDE_FXCRT_FX_UCD_H_
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-28 22:19:41 +0000