1 // Copyright 2013 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "ui/base/ime/composition_text_util_pango.h"
6
7 #include <pango/pango-attributes.h>
8
9 #include <string>
10 #include <utility>
11
12 #include "base/basictypes.h"
13 #include "base/logging.h"
14 #include "testing/gtest/include/gtest/gtest.h"
15 #include "ui/base/ime/composition_text.h"
16
17 namespace {
18
19 struct AttributeInfo {
20 int type;
21 int value;
22 int start_offset;
23 int end_offset;
24 };
25
26 struct Underline {
27 unsigned start_offset;
28 unsigned end_offset;
29 uint32 color;
30 bool thick;
31 uint32 background_color;
32 };
33
34 struct TestData {
35 const char* text;
36 const AttributeInfo attrs[10];
37 const Underline underlines[10];
38 };
39
40 const TestData kTestData[] = {
41 // Normal case
42 {"One Two Three",
43 {{PANGO_ATTR_UNDERLINE, PANGO_UNDERLINE_SINGLE, 0, 3},
44 {PANGO_ATTR_UNDERLINE, PANGO_UNDERLINE_DOUBLE, 4, 7},
45 {PANGO_ATTR_BACKGROUND, 0, 4, 7},
46 {PANGO_ATTR_UNDERLINE, PANGO_UNDERLINE_SINGLE, 8, 13},
47 {0, 0, 0, 0}},
48 {{0, 3, SK_ColorBLACK, false, SK_ColorTRANSPARENT},
49 {4, 7, SK_ColorBLACK, true, SK_ColorTRANSPARENT},
50 {8, 13, SK_ColorBLACK, false, SK_ColorTRANSPARENT},
51 {0, 0, 0, false, SK_ColorTRANSPARENT}}},
52
53 // Offset overflow.
54 {"One Two Three",
55 {{PANGO_ATTR_UNDERLINE, PANGO_UNDERLINE_SINGLE, 0, 3},
56 {PANGO_ATTR_BACKGROUND, 0, 4, 7},
57 {PANGO_ATTR_UNDERLINE, PANGO_UNDERLINE_SINGLE, 8, 20},
58 {0, 0, 0, 0}},
59 {{0, 3, SK_ColorBLACK, false, SK_ColorTRANSPARENT},
60 {4, 7, SK_ColorBLACK, true, SK_ColorTRANSPARENT},
61 {8, 13, SK_ColorBLACK, false, SK_ColorTRANSPARENT},
62 {0, 0, 0, false, SK_ColorTRANSPARENT}}},
63
64 // Error underline.
65 {"One Two Three",
66 {{PANGO_ATTR_UNDERLINE, PANGO_UNDERLINE_SINGLE, 0, 3},
67 {PANGO_ATTR_UNDERLINE, PANGO_UNDERLINE_ERROR, 4, 7},
68 {PANGO_ATTR_UNDERLINE, PANGO_UNDERLINE_SINGLE, 8, 13},
69 {0, 0, 0, 0}},
70 {{0, 3, SK_ColorBLACK, false, SK_ColorTRANSPARENT},
71 {4, 7, SK_ColorRED, false, SK_ColorTRANSPARENT},
72 {8, 13, SK_ColorBLACK, false, SK_ColorTRANSPARENT},
73 {0, 0, 0, false, SK_ColorTRANSPARENT}}},
74
75 // Default underline.
76 {"One Two Three",
77 {{0, 0, 0, 0}},
78 {{0, 13, SK_ColorBLACK, false, SK_ColorTRANSPARENT},
79 {0, 0, 0, false, SK_ColorTRANSPARENT}}},
80
81 // Unicode, including non-BMP characters: "123你好����一丁 456"
82 {"123\xE4\xBD\xA0\xE5\xA5\xBD\xF0\xA0\x80\x80\xF0\xA0\x80\x81\xE4\xB8\x80"
83 "\xE4\xB8\x81 456",
84 {{PANGO_ATTR_UNDERLINE, PANGO_UNDERLINE_SINGLE, 0, 3},
85 {PANGO_ATTR_UNDERLINE, PANGO_UNDERLINE_SINGLE, 3, 5},
86 {PANGO_ATTR_BACKGROUND, 0, 5, 7},
87 {PANGO_ATTR_UNDERLINE, PANGO_UNDERLINE_SINGLE, 7, 13},
88 {0, 0, 0, 0}},
89 {{0, 3, SK_ColorBLACK, false, SK_ColorTRANSPARENT},
90 {3, 5, SK_ColorBLACK, false, SK_ColorTRANSPARENT},
91 {5, 9, SK_ColorBLACK, true, SK_ColorTRANSPARENT},
92 {9, 15, SK_ColorBLACK, false, SK_ColorTRANSPARENT},
93 {0, 0, 0, false, SK_ColorTRANSPARENT}}},
94 };
95
CompareUnderline(const Underline & a,const ui::CompositionUnderline & b)96 void CompareUnderline(const Underline& a,
97 const ui::CompositionUnderline& b) {
98 EXPECT_EQ(a.start_offset, b.start_offset);
99 EXPECT_EQ(a.end_offset, b.end_offset);
100 EXPECT_EQ(a.color, b.color);
101 EXPECT_EQ(a.thick, b.thick);
102 EXPECT_EQ(a.background_color, b.background_color);
103 }
104
TEST(CompositionTextUtilPangoTest,ExtractCompositionText)105 TEST(CompositionTextUtilPangoTest, ExtractCompositionText) {
106 for (size_t i = 0; i < arraysize(kTestData); ++i) {
107 const char* text = kTestData[i].text;
108 const AttributeInfo* attrs = kTestData[i].attrs;
109 SCOPED_TRACE(testing::Message() << "Testing:" << i
110 << " text:" << text);
111
112 PangoAttrList* pango_attrs = pango_attr_list_new();
113 for (size_t a = 0; attrs[a].type; ++a) {
114 PangoAttribute* pango_attr = NULL;
115 switch (attrs[a].type) {
116 case PANGO_ATTR_UNDERLINE:
117 pango_attr = pango_attr_underline_new(
118 static_cast<PangoUnderline>(attrs[a].value));
119 break;
120 case PANGO_ATTR_BACKGROUND:
121 pango_attr = pango_attr_background_new(0, 0, 0);
122 break;
123 default:
124 NOTREACHED();
125 }
126 pango_attr->start_index =
127 g_utf8_offset_to_pointer(text, attrs[a].start_offset) - text;
128 pango_attr->end_index =
129 g_utf8_offset_to_pointer(text, attrs[a].end_offset) - text;
130 pango_attr_list_insert(pango_attrs, pango_attr);
131 }
132
133 ui::CompositionText result;
134 ui::ExtractCompositionTextFromGtkPreedit(text, pango_attrs, 0, &result);
135
136 const Underline* underlines = kTestData[i].underlines;
137 for (size_t u = 0; underlines[u].color &&
138 u < result.underlines.size(); ++u) {
139 SCOPED_TRACE(testing::Message() << "Underline:" << u);
140 CompareUnderline(underlines[u], result.underlines[u]);
141 }
142
143 pango_attr_list_unref(pango_attrs);
144 }
145 }
146
147 } // namespace
148