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| 1 /* | 1 /* |
| 2 * Copyright (C) 2013 Google Inc. All rights reserved. | 2 * Copyright (C) 2013 Google Inc. All rights reserved. |
| 3 * | 3 * |
| 4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
| 5 * modification, are permitted provided that the following conditions are | 5 * modification, are permitted provided that the following conditions are |
| 6 * met: | 6 * met: |
| 7 * | 7 * |
| 8 * * Redistributions of source code must retain the above copyright | 8 * * Redistributions of source code must retain the above copyright |
| 9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
| 10 * * Redistributions in binary form must reproduce the above | 10 * * Redistributions in binary form must reproduce the above |
| (...skipping 14 matching lines...) Expand all Loading... |
| 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 29 */ | 29 */ |
| 30 | 30 |
| 31 #include "config.h" | 31 #include "config.h" |
| 32 #include "core/layout/TextRunConstructor.h" | 32 #include "core/layout/TextRunConstructor.h" |
| 33 | 33 |
| 34 #include "core/layout/LayoutText.h" | 34 #include "core/layout/LayoutText.h" |
| 35 #include "core/layout/style/LayoutStyle.h" | 35 #include "core/layout/style/ComputedStyle.h" |
| 36 #include "platform/text/BidiTextRun.h" | 36 #include "platform/text/BidiTextRun.h" |
| 37 | 37 |
| 38 namespace blink { | 38 namespace blink { |
| 39 | 39 |
| 40 template <typename CharacterType> | 40 template <typename CharacterType> |
| 41 static inline TextRun constructTextRunInternal(LayoutObject* context, const Font
& font, const CharacterType* characters, int length, const LayoutStyle& style, T
extDirection direction) | 41 static inline TextRun constructTextRunInternal(LayoutObject* context, const Font
& font, const CharacterType* characters, int length, const ComputedStyle& style,
TextDirection direction) |
| 42 { | 42 { |
| 43 TextRun::ExpansionBehavior expansion = TextRun::AllowTrailingExpansion | Tex
tRun::ForbidLeadingExpansion; | 43 TextRun::ExpansionBehavior expansion = TextRun::AllowTrailingExpansion | Tex
tRun::ForbidLeadingExpansion; |
| 44 bool directionalOverride = style.rtlOrdering() == VisualOrder; | 44 bool directionalOverride = style.rtlOrdering() == VisualOrder; |
| 45 TextRun run(characters, length, 0, 0, expansion, direction, directionalOverr
ide); | 45 TextRun run(characters, length, 0, 0, expansion, direction, directionalOverr
ide); |
| 46 return run; | 46 return run; |
| 47 } | 47 } |
| 48 | 48 |
| 49 template <typename CharacterType> | 49 template <typename CharacterType> |
| 50 static inline TextRun constructTextRunInternal(LayoutObject* context, const Font
& font, const CharacterType* characters, int length, const LayoutStyle& style, T
extDirection direction, TextRunFlags flags) | 50 static inline TextRun constructTextRunInternal(LayoutObject* context, const Font
& font, const CharacterType* characters, int length, const ComputedStyle& style,
TextDirection direction, TextRunFlags flags) |
| 51 { | 51 { |
| 52 TextDirection textDirection = direction; | 52 TextDirection textDirection = direction; |
| 53 bool directionalOverride = style.rtlOrdering() == VisualOrder; | 53 bool directionalOverride = style.rtlOrdering() == VisualOrder; |
| 54 if (flags != DefaultTextRunFlags) { | 54 if (flags != DefaultTextRunFlags) { |
| 55 if (flags & RespectDirection) | 55 if (flags & RespectDirection) |
| 56 textDirection = style.direction(); | 56 textDirection = style.direction(); |
| 57 if (flags & RespectDirectionOverride) | 57 if (flags & RespectDirectionOverride) |
| 58 directionalOverride |= isOverride(style.unicodeBidi()); | 58 directionalOverride |= isOverride(style.unicodeBidi()); |
| 59 } | 59 } |
| 60 | 60 |
| 61 TextRun::ExpansionBehavior expansion = TextRun::AllowTrailingExpansion | Tex
tRun::ForbidLeadingExpansion; | 61 TextRun::ExpansionBehavior expansion = TextRun::AllowTrailingExpansion | Tex
tRun::ForbidLeadingExpansion; |
| 62 TextRun run(characters, length, 0, 0, expansion, textDirection, directionalO
verride); | 62 TextRun run(characters, length, 0, 0, expansion, textDirection, directionalO
verride); |
| 63 return run; | 63 return run; |
| 64 } | 64 } |
| 65 | 65 |
| 66 TextRun constructTextRun(LayoutObject* context, const Font& font, const LChar* c
haracters, int length, const LayoutStyle& style, TextDirection direction) | 66 TextRun constructTextRun(LayoutObject* context, const Font& font, const LChar* c
haracters, int length, const ComputedStyle& style, TextDirection direction) |
| 67 { | 67 { |
| 68 return constructTextRunInternal(context, font, characters, length, style, di
rection); | 68 return constructTextRunInternal(context, font, characters, length, style, di
rection); |
| 69 } | 69 } |
| 70 | 70 |
| 71 TextRun constructTextRun(LayoutObject* context, const Font& font, const UChar* c
haracters, int length, const LayoutStyle& style, TextDirection direction) | 71 TextRun constructTextRun(LayoutObject* context, const Font& font, const UChar* c
haracters, int length, const ComputedStyle& style, TextDirection direction) |
| 72 { | 72 { |
| 73 return constructTextRunInternal(context, font, characters, length, style, di
rection); | 73 return constructTextRunInternal(context, font, characters, length, style, di
rection); |
| 74 } | 74 } |
| 75 | 75 |
| 76 TextRun constructTextRun(LayoutObject* context, const Font& font, const LayoutTe
xt* text, const LayoutStyle& style, TextDirection direction) | 76 TextRun constructTextRun(LayoutObject* context, const Font& font, const LayoutTe
xt* text, const ComputedStyle& style, TextDirection direction) |
| 77 { | 77 { |
| 78 if (text->hasEmptyText()) | 78 if (text->hasEmptyText()) |
| 79 return constructTextRunInternal(context, font, static_cast<const LChar*>
(nullptr), 0, style, direction); | 79 return constructTextRunInternal(context, font, static_cast<const LChar*>
(nullptr), 0, style, direction); |
| 80 if (text->is8Bit()) | 80 if (text->is8Bit()) |
| 81 return constructTextRunInternal(context, font, text->characters8(), text
->textLength(), style, direction); | 81 return constructTextRunInternal(context, font, text->characters8(), text
->textLength(), style, direction); |
| 82 return constructTextRunInternal(context, font, text->characters16(), text->t
extLength(), style, direction); | 82 return constructTextRunInternal(context, font, text->characters16(), text->t
extLength(), style, direction); |
| 83 } | 83 } |
| 84 | 84 |
| 85 TextRun constructTextRun(LayoutObject* context, const Font& font, const LayoutTe
xt* text, unsigned offset, unsigned length, const LayoutStyle& style, TextDirect
ion direction) | 85 TextRun constructTextRun(LayoutObject* context, const Font& font, const LayoutTe
xt* text, unsigned offset, unsigned length, const ComputedStyle& style, TextDire
ction direction) |
| 86 { | 86 { |
| 87 ASSERT(offset + length <= text->textLength()); | 87 ASSERT(offset + length <= text->textLength()); |
| 88 if (text->hasEmptyText()) | 88 if (text->hasEmptyText()) |
| 89 return constructTextRunInternal(context, font, static_cast<const LChar*>
(nullptr), 0, style, direction); | 89 return constructTextRunInternal(context, font, static_cast<const LChar*>
(nullptr), 0, style, direction); |
| 90 if (text->is8Bit()) | 90 if (text->is8Bit()) |
| 91 return constructTextRunInternal(context, font, text->characters8() + off
set, length, style, direction); | 91 return constructTextRunInternal(context, font, text->characters8() + off
set, length, style, direction); |
| 92 return constructTextRunInternal(context, font, text->characters16() + offset
, length, style, direction); | 92 return constructTextRunInternal(context, font, text->characters16() + offset
, length, style, direction); |
| 93 } | 93 } |
| 94 | 94 |
| 95 TextRun constructTextRun(LayoutObject* context, const Font& font, const String&
string, const LayoutStyle& style, TextDirection direction, TextRunFlags flags) | 95 TextRun constructTextRun(LayoutObject* context, const Font& font, const String&
string, const ComputedStyle& style, TextDirection direction, TextRunFlags flags) |
| 96 { | 96 { |
| 97 unsigned length = string.length(); | 97 unsigned length = string.length(); |
| 98 if (!length) | 98 if (!length) |
| 99 return constructTextRunInternal(context, font, static_cast<const LChar*>
(0), length, style, direction, flags); | 99 return constructTextRunInternal(context, font, static_cast<const LChar*>
(0), length, style, direction, flags); |
| 100 if (string.is8Bit()) | 100 if (string.is8Bit()) |
| 101 return constructTextRunInternal(context, font, string.characters8(), len
gth, style, direction, flags); | 101 return constructTextRunInternal(context, font, string.characters8(), len
gth, style, direction, flags); |
| 102 return constructTextRunInternal(context, font, string.characters16(), length
, style, direction, flags); | 102 return constructTextRunInternal(context, font, string.characters16(), length
, style, direction, flags); |
| 103 } | 103 } |
| 104 | 104 |
| 105 TextRun constructTextRun(LayoutObject* context, const Font& font, const String&
string, const LayoutStyle& style, TextRunFlags flags) | 105 TextRun constructTextRun(LayoutObject* context, const Font& font, const String&
string, const ComputedStyle& style, TextRunFlags flags) |
| 106 { | 106 { |
| 107 return constructTextRun(context, font, string, style, string.isEmpty() || st
ring.is8Bit() ? LTR : determineDirectionality(string), flags); | 107 return constructTextRun(context, font, string, style, string.isEmpty() || st
ring.is8Bit() ? LTR : determineDirectionality(string), flags); |
| 108 } | 108 } |
| 109 | 109 |
| 110 TextRun constructTextRun(LayoutObject* context, const Font& font, const LayoutTe
xt* text, unsigned offset, unsigned length, const LayoutStyle& style) | 110 TextRun constructTextRun(LayoutObject* context, const Font& font, const LayoutTe
xt* text, unsigned offset, unsigned length, const ComputedStyle& style) |
| 111 { | 111 { |
| 112 ASSERT(offset + length <= text->textLength()); | 112 ASSERT(offset + length <= text->textLength()); |
| 113 if (text->hasEmptyText()) | 113 if (text->hasEmptyText()) |
| 114 return constructTextRunInternal(context, font, static_cast<const LChar*>
(nullptr), 0, style, LTR); | 114 return constructTextRunInternal(context, font, static_cast<const LChar*>
(nullptr), 0, style, LTR); |
| 115 if (text->is8Bit()) | 115 if (text->is8Bit()) |
| 116 return constructTextRunInternal(context, font, text->characters8() + off
set, length, style, LTR); | 116 return constructTextRunInternal(context, font, text->characters8() + off
set, length, style, LTR); |
| 117 | 117 |
| 118 TextRun run = constructTextRunInternal(context, font, text->characters16() +
offset, length, style, LTR); | 118 TextRun run = constructTextRunInternal(context, font, text->characters16() +
offset, length, style, LTR); |
| 119 run.setDirection(directionForRun(run)); | 119 run.setDirection(directionForRun(run)); |
| 120 return run; | 120 return run; |
| 121 } | 121 } |
| 122 | 122 |
| 123 } // namespace blink | 123 } // namespace blink |
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