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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "ui/gfx/render_text.h" | 5 #include "ui/gfx/render_text.h" |
6 | 6 |
7 #include <limits.h> | 7 #include <limits.h> |
8 | 8 |
9 #include <algorithm> | 9 #include <algorithm> |
10 #include <climits> | 10 #include <climits> |
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1021 if (!multiline()) { | 1021 if (!multiline()) { |
1022 offset.Add(GetUpdatedDisplayOffset()); | 1022 offset.Add(GetUpdatedDisplayOffset()); |
1023 } else { | 1023 } else { |
1024 DCHECK_LT(line_number, lines().size()); | 1024 DCHECK_LT(line_number, lines().size()); |
1025 offset.Add(Vector2d(0, lines_[line_number].preceding_heights)); | 1025 offset.Add(Vector2d(0, lines_[line_number].preceding_heights)); |
1026 } | 1026 } |
1027 offset.Add(GetAlignmentOffset(line_number)); | 1027 offset.Add(GetAlignmentOffset(line_number)); |
1028 return offset; | 1028 return offset; |
1029 } | 1029 } |
1030 | 1030 |
1031 bool RenderText::GetDecoratedWordAtPoint(const Point& point, | 1031 bool RenderText::GetDecoratedWordAndBaselineAtPoint( |
1032 DecoratedText* decorated_word, | 1032 const Point& point, |
1033 Point* baseline_point) { | 1033 DecoratedText* decorated_word, |
| 1034 Point* baseline_point) { |
1034 // FindCursorPosition doesn't currently support multiline. See | 1035 // FindCursorPosition doesn't currently support multiline. See |
1035 // http://crbug.com/650120. | 1036 // http://crbug.com/650120. |
1036 if (multiline() || obscured()) | 1037 if (multiline() || obscured()) |
1037 return false; | 1038 return false; |
1038 | 1039 |
1039 // Note: FindCursorPosition will trigger a layout via EnsureLayout. | 1040 // Note: FindCursorPosition will trigger a layout via EnsureLayout. |
1040 const SelectionModel model_at_point = FindCursorPosition(point); | 1041 const SelectionModel model_at_point = FindCursorPosition(point); |
1041 const size_t word_index = | 1042 const size_t word_index = |
1042 GetNearestWordStartBoundary(model_at_point.caret_pos()); | 1043 GetNearestWordStartBoundary(model_at_point.caret_pos()); |
1043 if (word_index >= text().length()) | 1044 if (word_index >= text().length()) |
1044 return false; | 1045 return false; |
1045 | 1046 |
1046 const Range word_range = ExpandRangeToWordBoundary(Range(word_index)); | 1047 const Range word_range = ExpandRangeToWordBoundary(Range(word_index)); |
1047 DCHECK(!word_range.is_reversed()); | 1048 DCHECK(!word_range.is_reversed()); |
1048 DCHECK(!word_range.is_empty()); | 1049 DCHECK(!word_range.is_empty()); |
1049 | 1050 |
1050 const std::vector<Rect> word_bounds = GetSubstringBounds(word_range); | 1051 return GetDecoratedTextAndBaselineForRange(word_range, decorated_word, |
1051 if (word_bounds.empty() || | 1052 baseline_point); |
1052 !GetDecoratedTextForRange(word_range, decorated_word)) { | 1053 } |
| 1054 |
| 1055 bool RenderText::GetDecoratedTextAndBaselineForRange( |
| 1056 const Range& range, |
| 1057 DecoratedText* decorated_text, |
| 1058 Point* baseline_point) { |
| 1059 if (range.is_empty() || !GetDecoratedTextForRange(range, decorated_text)) |
1053 return false; | 1060 return false; |
1054 } | |
1055 | 1061 |
1056 // Retrieve the baseline origin of the left-most glyph. | 1062 // Retrieve the baseline origin of the left-most glyph. |
| 1063 const std::vector<Rect> text_bounds = GetSubstringBounds(range); |
| 1064 if (text_bounds.empty()) |
| 1065 return false; |
| 1066 |
1057 const auto left_rect = std::min_element( | 1067 const auto left_rect = std::min_element( |
1058 word_bounds.begin(), word_bounds.end(), | 1068 text_bounds.begin(), text_bounds.end(), |
1059 [](const Rect& lhs, const Rect& rhs) { return lhs.x() < rhs.x(); }); | 1069 [](const Rect& lhs, const Rect& rhs) { return lhs.x() < rhs.x(); }); |
1060 *baseline_point = left_rect->origin() + Vector2d(0, GetDisplayTextBaseline()); | 1070 *baseline_point = left_rect->origin() + Vector2d(0, GetDisplayTextBaseline()); |
1061 return true; | 1071 return true; |
1062 } | 1072 } |
1063 | 1073 |
1064 base::string16 RenderText::GetTextFromRange(const Range& range) const { | 1074 base::string16 RenderText::GetTextFromRange(const Range& range) const { |
1065 if (range.IsValid() && range.GetMin() < text().length()) | 1075 if (range.IsValid() && range.GetMin() < text().length()) |
1066 return text().substr(range.GetMin(), range.length()); | 1076 return text().substr(range.GetMin(), range.length()); |
1067 return base::string16(); | 1077 return base::string16(); |
1068 } | 1078 } |
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1692 | 1702 |
1693 for (; range_max < length; ++range_max) | 1703 for (; range_max < length; ++range_max) |
1694 if (iter.IsEndOfWord(range_max) || iter.IsStartOfWord(range_max)) | 1704 if (iter.IsEndOfWord(range_max) || iter.IsStartOfWord(range_max)) |
1695 break; | 1705 break; |
1696 | 1706 |
1697 return range.is_reversed() ? Range(range_max, range_min) | 1707 return range.is_reversed() ? Range(range_max, range_min) |
1698 : Range(range_min, range_max); | 1708 : Range(range_min, range_max); |
1699 } | 1709 } |
1700 | 1710 |
1701 } // namespace gfx | 1711 } // namespace gfx |
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