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 3 // found in the LICENSE file. 4 5 #include "ui/gfx/render_text.h" 6 7 #include <algorithm> 8 9 #include "base/format_macros.h" 10 #include "base/i18n/break_iterator.h" 11 #include "base/memory/scoped_ptr.h" 12 #include "base/strings/string_util.h" 13 #include "base/strings/stringprintf.h" 14 #include "base/strings/utf_string_conversions.h" 15 #include "testing/gtest/include/gtest/gtest.h" 16 #include "ui/gfx/break_list.h" 17 #include "ui/gfx/canvas.h" 18 #include "ui/gfx/render_text_harfbuzz.h" 19 20 #if defined(OS_WIN) 21 #include "base/win/windows_version.h" 22 #include "ui/gfx/render_text_win.h" 23 #endif 24 25 #if defined(OS_LINUX) && !defined(USE_OZONE) 26 #include "ui/gfx/render_text_pango.h" 27 #endif 28 29 using base::ASCIIToUTF16; 30 using base::UTF8ToUTF16; 31 using base::WideToUTF16; 32 33 namespace gfx { 34 35 namespace { 36 37 // Various weak, LTR, RTL, and Bidi string cases with three characters each. 38 const wchar_t kWeak[] = L" . "; 39 const wchar_t kLtr[] = L"abc"; 40 const wchar_t kRtl[] = L"\x5d0\x5d1\x5d2"; 41 #if !defined(OS_MACOSX) 42 const wchar_t kLtrRtl[] = L"a" L"\x5d0\x5d1"; 43 const wchar_t kLtrRtlLtr[] = L"a" L"\x5d1" L"b"; 44 const wchar_t kRtlLtr[] = L"\x5d0\x5d1" L"a"; 45 const wchar_t kRtlLtrRtl[] = L"\x5d0" L"a" L"\x5d1"; 46 #endif 47 48 // Checks whether |range| contains |index|. This is not the same as calling 49 // range.Contains(Range(index)), which returns true if |index| == |range.end()|. 50 bool IndexInRange(const Range& range, size_t index) { 51 return index >= range.start() && index < range.end(); 52 } 53 54 base::string16 GetSelectedText(RenderText* render_text) { 55 return render_text->text().substr(render_text->selection().GetMin(), 56 render_text->selection().length()); 57 } 58 59 // A test utility function to set the application default text direction. 60 void SetRTL(bool rtl) { 61 // Override the current locale/direction. 62 base::i18n::SetICUDefaultLocale(rtl ? "he" : "en"); 63 EXPECT_EQ(rtl, base::i18n::IsRTL()); 64 } 65 66 #if !defined(OS_MACOSX) 67 // Ensure cursor movement in the specified |direction| yields |expected| values. 68 void RunMoveCursorLeftRightTest(RenderText* render_text, 69 const std::vector<SelectionModel>& expected, 70 VisualCursorDirection direction) { 71 for (size_t i = 0; i < expected.size(); ++i) { 72 SCOPED_TRACE(base::StringPrintf("Going %s; expected value index %d.", 73 direction == CURSOR_LEFT ? "left" : "right", static_cast<int>(i))); 74 EXPECT_EQ(expected[i], render_text->selection_model()); 75 render_text->MoveCursor(CHARACTER_BREAK, direction, false); 76 } 77 // Check that cursoring is clamped at the line edge. 78 EXPECT_EQ(expected.back(), render_text->selection_model()); 79 // Check that it is the line edge. 80 render_text->MoveCursor(LINE_BREAK, direction, false); 81 EXPECT_EQ(expected.back(), render_text->selection_model()); 82 } 83 #endif // !defined(OS_MACOSX) 84 85 } // namespace 86 87 class RenderTextTest : public testing::Test { 88 }; 89 90 TEST_F(RenderTextTest, DefaultStyle) { 91 // Check the default styles applied to new instances and adjusted text. 92 scoped_ptr<RenderText> render_text(RenderText::CreateInstance()); 93 EXPECT_TRUE(render_text->text().empty()); 94 const wchar_t* const cases[] = { kWeak, kLtr, L"Hello", kRtl, L"", L"" }; 95 for (size_t i = 0; i < arraysize(cases); ++i) { 96 EXPECT_TRUE(render_text->colors().EqualsValueForTesting(SK_ColorBLACK)); 97 for (size_t style = 0; style < NUM_TEXT_STYLES; ++style) 98 EXPECT_TRUE(render_text->styles()[style].EqualsValueForTesting(false)); 99 render_text->SetText(WideToUTF16(cases[i])); 100 } 101 } 102 103 TEST_F(RenderTextTest, SetColorAndStyle) { 104 // Ensure custom default styles persist across setting and clearing text. 105 scoped_ptr<RenderText> render_text(RenderText::CreateInstance()); 106 const SkColor color = SK_ColorRED; 107 render_text->SetColor(color); 108 render_text->SetStyle(BOLD, true); 109 render_text->SetStyle(UNDERLINE, false); 110 const wchar_t* const cases[] = { kWeak, kLtr, L"Hello", kRtl, L"", L"" }; 111 for (size_t i = 0; i < arraysize(cases); ++i) { 112 EXPECT_TRUE(render_text->colors().EqualsValueForTesting(color)); 113 EXPECT_TRUE(render_text->styles()[BOLD].EqualsValueForTesting(true)); 114 EXPECT_TRUE(render_text->styles()[UNDERLINE].EqualsValueForTesting(false)); 115 render_text->SetText(WideToUTF16(cases[i])); 116 117 // Ensure custom default styles can be applied after text has been set. 118 if (i == 1) 119 render_text->SetStyle(STRIKE, true); 120 if (i >= 1) 121 EXPECT_TRUE(render_text->styles()[STRIKE].EqualsValueForTesting(true)); 122 } 123 } 124 125 TEST_F(RenderTextTest, ApplyColorAndStyle) { 126 scoped_ptr<RenderText> render_text(RenderText::CreateInstance()); 127 render_text->SetText(ASCIIToUTF16("012345678")); 128 129 // Apply a ranged color and style and check the resulting breaks. 130 render_text->ApplyColor(SK_ColorRED, Range(1, 4)); 131 render_text->ApplyStyle(BOLD, true, Range(2, 5)); 132 std::vector<std::pair<size_t, SkColor> > expected_color; 133 expected_color.push_back(std::pair<size_t, SkColor>(0, SK_ColorBLACK)); 134 expected_color.push_back(std::pair<size_t, SkColor>(1, SK_ColorRED)); 135 expected_color.push_back(std::pair<size_t, SkColor>(4, SK_ColorBLACK)); 136 EXPECT_TRUE(render_text->colors().EqualsForTesting(expected_color)); 137 std::vector<std::pair<size_t, bool> > expected_style; 138 expected_style.push_back(std::pair<size_t, bool>(0, false)); 139 expected_style.push_back(std::pair<size_t, bool>(2, true)); 140 expected_style.push_back(std::pair<size_t, bool>(5, false)); 141 EXPECT_TRUE(render_text->styles()[BOLD].EqualsForTesting(expected_style)); 142 143 // Ensure setting a color and style overrides the ranged colors and styles. 144 render_text->SetColor(SK_ColorBLUE); 145 EXPECT_TRUE(render_text->colors().EqualsValueForTesting(SK_ColorBLUE)); 146 render_text->SetStyle(BOLD, false); 147 EXPECT_TRUE(render_text->styles()[BOLD].EqualsValueForTesting(false)); 148 149 // Apply a color and style over the text end and check the resulting breaks. 150 // (INT_MAX should be used instead of the text length for the range end) 151 const size_t text_length = render_text->text().length(); 152 render_text->ApplyColor(SK_ColorRED, Range(0, text_length)); 153 render_text->ApplyStyle(BOLD, true, Range(2, text_length)); 154 std::vector<std::pair<size_t, SkColor> > expected_color_end; 155 expected_color_end.push_back(std::pair<size_t, SkColor>(0, SK_ColorRED)); 156 EXPECT_TRUE(render_text->colors().EqualsForTesting(expected_color_end)); 157 std::vector<std::pair<size_t, bool> > expected_style_end; 158 expected_style_end.push_back(std::pair<size_t, bool>(0, false)); 159 expected_style_end.push_back(std::pair<size_t, bool>(2, true)); 160 EXPECT_TRUE(render_text->styles()[BOLD].EqualsForTesting(expected_style_end)); 161 162 // Ensure ranged values adjust to accommodate text length changes. 163 render_text->ApplyStyle(ITALIC, true, Range(0, 2)); 164 render_text->ApplyStyle(ITALIC, true, Range(3, 6)); 165 render_text->ApplyStyle(ITALIC, true, Range(7, text_length)); 166 std::vector<std::pair<size_t, bool> > expected_italic; 167 expected_italic.push_back(std::pair<size_t, bool>(0, true)); 168 expected_italic.push_back(std::pair<size_t, bool>(2, false)); 169 expected_italic.push_back(std::pair<size_t, bool>(3, true)); 170 expected_italic.push_back(std::pair<size_t, bool>(6, false)); 171 expected_italic.push_back(std::pair<size_t, bool>(7, true)); 172 EXPECT_TRUE(render_text->styles()[ITALIC].EqualsForTesting(expected_italic)); 173 174 // Changing the text should clear any breaks except for the first one. 175 render_text->SetText(ASCIIToUTF16("0123456")); 176 expected_italic.resize(1); 177 EXPECT_TRUE(render_text->styles()[ITALIC].EqualsForTesting(expected_italic)); 178 render_text->ApplyStyle(ITALIC, false, Range(2, 4)); 179 render_text->SetText(ASCIIToUTF16("012345678")); 180 EXPECT_TRUE(render_text->styles()[ITALIC].EqualsForTesting(expected_italic)); 181 render_text->ApplyStyle(ITALIC, false, Range(0, 1)); 182 render_text->SetText(ASCIIToUTF16("0123456")); 183 expected_italic.begin()->second = false; 184 EXPECT_TRUE(render_text->styles()[ITALIC].EqualsForTesting(expected_italic)); 185 render_text->ApplyStyle(ITALIC, true, Range(2, 4)); 186 render_text->SetText(ASCIIToUTF16("012345678")); 187 EXPECT_TRUE(render_text->styles()[ITALIC].EqualsForTesting(expected_italic)); 188 189 // TODO(tmoniuszko): Enable when RenderTextMac::IsValidCursorIndex is 190 // implemented. 191 #if !defined(OS_MACOSX) 192 // Styles shouldn't be changed mid-grapheme. 193 render_text->SetText(WideToUTF16( 194 L"0" L"\x0915\x093f" L"1" L"\x0915\x093f" L"2")); 195 render_text->ApplyStyle(UNDERLINE, true, Range(2, 5)); 196 std::vector<std::pair<size_t, bool> > expected_underline; 197 expected_underline.push_back(std::pair<size_t, bool>(0, false)); 198 expected_underline.push_back(std::pair<size_t, bool>(1, true)); 199 expected_underline.push_back(std::pair<size_t, bool>(6, false)); 200 EXPECT_TRUE(render_text->styles()[UNDERLINE].EqualsForTesting( 201 expected_underline)); 202 #endif // OS_MACOSX 203 } 204 205 #if defined(OS_LINUX) && !defined(USE_OZONE) 206 TEST_F(RenderTextTest, PangoAttributes) { 207 scoped_ptr<RenderText> render_text(RenderText::CreateNativeInstance()); 208 render_text->SetText(ASCIIToUTF16("012345678")); 209 210 // Apply ranged BOLD/ITALIC styles and check the resulting Pango attributes. 211 render_text->ApplyStyle(BOLD, true, Range(2, 4)); 212 render_text->ApplyStyle(ITALIC, true, Range(1, 3)); 213 214 struct { 215 int start; 216 int end; 217 bool bold; 218 bool italic; 219 } cases[] = { 220 { 0, 1, false, false }, 221 { 1, 2, false, true }, 222 { 2, 3, true, true }, 223 { 3, 4, true, false }, 224 { 4, INT_MAX, false, false }, 225 }; 226 227 int start = 0, end = 0; 228 RenderTextPango* rt_linux = static_cast<RenderTextPango*>(render_text.get()); 229 rt_linux->EnsureLayout(); 230 PangoAttrList* attributes = pango_layout_get_attributes(rt_linux->layout_); 231 PangoAttrIterator* iter = pango_attr_list_get_iterator(attributes); 232 for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); ++i) { 233 pango_attr_iterator_range(iter, &start, &end); 234 EXPECT_EQ(cases[i].start, start); 235 EXPECT_EQ(cases[i].end, end); 236 PangoFontDescription* font = pango_font_description_new(); 237 pango_attr_iterator_get_font(iter, font, NULL, NULL); 238 char* description_string = pango_font_description_to_string(font); 239 const base::string16 desc = ASCIIToUTF16(description_string); 240 const bool bold = desc.find(ASCIIToUTF16("Bold")) != std::string::npos; 241 EXPECT_EQ(cases[i].bold, bold); 242 const bool italic = desc.find(ASCIIToUTF16("Italic")) != std::string::npos; 243 EXPECT_EQ(cases[i].italic, italic); 244 pango_attr_iterator_next(iter); 245 pango_font_description_free(font); 246 g_free(description_string); 247 } 248 EXPECT_FALSE(pango_attr_iterator_next(iter)); 249 pango_attr_iterator_destroy(iter); 250 } 251 #endif 252 253 // TODO(asvitkine): Cursor movements tests disabled on Mac because RenderTextMac 254 // does not implement this yet. http://crbug.com/131618 255 #if !defined(OS_MACOSX) 256 void TestVisualCursorMotionInObscuredField(RenderText* render_text, 257 const base::string16& text, 258 bool select) { 259 ASSERT_TRUE(render_text->obscured()); 260 render_text->SetText(text); 261 int len = text.length(); 262 render_text->MoveCursor(LINE_BREAK, CURSOR_RIGHT, select); 263 EXPECT_EQ(SelectionModel(Range(select ? 0 : len, len), CURSOR_FORWARD), 264 render_text->selection_model()); 265 render_text->MoveCursor(LINE_BREAK, CURSOR_LEFT, select); 266 EXPECT_EQ(SelectionModel(0, CURSOR_BACKWARD), render_text->selection_model()); 267 for (int j = 1; j <= len; ++j) { 268 render_text->MoveCursor(CHARACTER_BREAK, CURSOR_RIGHT, select); 269 EXPECT_EQ(SelectionModel(Range(select ? 0 : j, j), CURSOR_BACKWARD), 270 render_text->selection_model()); 271 } 272 for (int j = len - 1; j >= 0; --j) { 273 render_text->MoveCursor(CHARACTER_BREAK, CURSOR_LEFT, select); 274 EXPECT_EQ(SelectionModel(Range(select ? 0 : j, j), CURSOR_FORWARD), 275 render_text->selection_model()); 276 } 277 render_text->MoveCursor(WORD_BREAK, CURSOR_RIGHT, select); 278 EXPECT_EQ(SelectionModel(Range(select ? 0 : len, len), CURSOR_FORWARD), 279 render_text->selection_model()); 280 render_text->MoveCursor(WORD_BREAK, CURSOR_LEFT, select); 281 EXPECT_EQ(SelectionModel(0, CURSOR_BACKWARD), render_text->selection_model()); 282 } 283 284 TEST_F(RenderTextTest, ObscuredText) { 285 const base::string16 seuss = ASCIIToUTF16("hop on pop"); 286 const base::string16 no_seuss = ASCIIToUTF16("**********"); 287 scoped_ptr<RenderText> render_text(RenderText::CreateInstance()); 288 289 // GetLayoutText() returns asterisks when the obscured bit is set. 290 render_text->SetText(seuss); 291 render_text->SetObscured(true); 292 EXPECT_EQ(seuss, render_text->text()); 293 EXPECT_EQ(no_seuss, render_text->GetLayoutText()); 294 render_text->SetObscured(false); 295 EXPECT_EQ(seuss, render_text->text()); 296 EXPECT_EQ(seuss, render_text->GetLayoutText()); 297 298 render_text->SetObscured(true); 299 300 // Surrogate pairs are counted as one code point. 301 const base::char16 invalid_surrogates[] = {0xDC00, 0xD800, 0}; 302 render_text->SetText(invalid_surrogates); 303 EXPECT_EQ(ASCIIToUTF16("**"), render_text->GetLayoutText()); 304 const base::char16 valid_surrogates[] = {0xD800, 0xDC00, 0}; 305 render_text->SetText(valid_surrogates); 306 EXPECT_EQ(ASCIIToUTF16("*"), render_text->GetLayoutText()); 307 EXPECT_EQ(0U, render_text->cursor_position()); 308 render_text->MoveCursor(CHARACTER_BREAK, CURSOR_RIGHT, false); 309 EXPECT_EQ(2U, render_text->cursor_position()); 310 311 // Test index conversion and cursor validity with a valid surrogate pair. 312 EXPECT_EQ(0U, render_text->TextIndexToLayoutIndex(0U)); 313 EXPECT_EQ(1U, render_text->TextIndexToLayoutIndex(1U)); 314 EXPECT_EQ(1U, render_text->TextIndexToLayoutIndex(2U)); 315 EXPECT_EQ(0U, render_text->LayoutIndexToTextIndex(0U)); 316 EXPECT_EQ(2U, render_text->LayoutIndexToTextIndex(1U)); 317 EXPECT_TRUE(render_text->IsValidCursorIndex(0U)); 318 EXPECT_FALSE(render_text->IsValidCursorIndex(1U)); 319 EXPECT_TRUE(render_text->IsValidCursorIndex(2U)); 320 321 // FindCursorPosition() should not return positions between a surrogate pair. 322 render_text->SetDisplayRect(Rect(0, 0, 20, 20)); 323 EXPECT_EQ(render_text->FindCursorPosition(Point(0, 0)).caret_pos(), 0U); 324 EXPECT_EQ(render_text->FindCursorPosition(Point(20, 0)).caret_pos(), 2U); 325 for (int x = -1; x <= 20; ++x) { 326 SelectionModel selection = render_text->FindCursorPosition(Point(x, 0)); 327 EXPECT_TRUE(selection.caret_pos() == 0U || selection.caret_pos() == 2U); 328 } 329 330 // GetGlyphBounds() should yield the entire string bounds for text index 0. 331 EXPECT_EQ(render_text->GetStringSize().width(), 332 static_cast<int>(render_text->GetGlyphBounds(0U).length())); 333 334 // Cursoring is independent of underlying characters when text is obscured. 335 const wchar_t* const texts[] = { 336 kWeak, kLtr, kLtrRtl, kLtrRtlLtr, kRtl, kRtlLtr, kRtlLtrRtl, 337 L"hop on pop", // Check LTR word boundaries. 338 L"\x05d0\x05d1 \x05d0\x05d2 \x05d1\x05d2", // Check RTL word boundaries. 339 }; 340 for (size_t i = 0; i < arraysize(texts); ++i) { 341 base::string16 text = WideToUTF16(texts[i]); 342 TestVisualCursorMotionInObscuredField(render_text.get(), text, false); 343 TestVisualCursorMotionInObscuredField(render_text.get(), text, true); 344 } 345 } 346 347 TEST_F(RenderTextTest, RevealObscuredText) { 348 const base::string16 seuss = ASCIIToUTF16("hop on pop"); 349 const base::string16 no_seuss = ASCIIToUTF16("**********"); 350 scoped_ptr<RenderText> render_text(RenderText::CreateInstance()); 351 352 render_text->SetText(seuss); 353 render_text->SetObscured(true); 354 EXPECT_EQ(seuss, render_text->text()); 355 EXPECT_EQ(no_seuss, render_text->GetLayoutText()); 356 357 // Valid reveal index and new revealed index clears previous one. 358 render_text->RenderText::SetObscuredRevealIndex(0); 359 EXPECT_EQ(ASCIIToUTF16("h*********"), render_text->GetLayoutText()); 360 render_text->RenderText::SetObscuredRevealIndex(1); 361 EXPECT_EQ(ASCIIToUTF16("*o********"), render_text->GetLayoutText()); 362 render_text->RenderText::SetObscuredRevealIndex(2); 363 EXPECT_EQ(ASCIIToUTF16("**p*******"), render_text->GetLayoutText()); 364 365 // Invalid reveal index. 366 render_text->RenderText::SetObscuredRevealIndex(-1); 367 EXPECT_EQ(no_seuss, render_text->GetLayoutText()); 368 render_text->RenderText::SetObscuredRevealIndex(seuss.length() + 1); 369 EXPECT_EQ(no_seuss, render_text->GetLayoutText()); 370 371 // SetObscured clears the revealed index. 372 render_text->RenderText::SetObscuredRevealIndex(0); 373 EXPECT_EQ(ASCIIToUTF16("h*********"), render_text->GetLayoutText()); 374 render_text->SetObscured(false); 375 EXPECT_EQ(seuss, render_text->GetLayoutText()); 376 render_text->SetObscured(true); 377 EXPECT_EQ(no_seuss, render_text->GetLayoutText()); 378 379 // SetText clears the revealed index. 380 render_text->SetText(ASCIIToUTF16("new")); 381 EXPECT_EQ(ASCIIToUTF16("***"), render_text->GetLayoutText()); 382 render_text->RenderText::SetObscuredRevealIndex(2); 383 EXPECT_EQ(ASCIIToUTF16("**w"), render_text->GetLayoutText()); 384 render_text->SetText(ASCIIToUTF16("new longer")); 385 EXPECT_EQ(ASCIIToUTF16("**********"), render_text->GetLayoutText()); 386 387 // Text with invalid surrogates. 388 const base::char16 invalid_surrogates[] = {0xDC00, 0xD800, 'h', 'o', 'p', 0}; 389 render_text->SetText(invalid_surrogates); 390 EXPECT_EQ(ASCIIToUTF16("*****"), render_text->GetLayoutText()); 391 render_text->RenderText::SetObscuredRevealIndex(0); 392 const base::char16 invalid_expect_0[] = {0xDC00, '*', '*', '*', '*', 0}; 393 EXPECT_EQ(invalid_expect_0, render_text->GetLayoutText()); 394 render_text->RenderText::SetObscuredRevealIndex(1); 395 const base::char16 invalid_expect_1[] = {'*', 0xD800, '*', '*', '*', 0}; 396 EXPECT_EQ(invalid_expect_1, render_text->GetLayoutText()); 397 render_text->RenderText::SetObscuredRevealIndex(2); 398 EXPECT_EQ(ASCIIToUTF16("**h**"), render_text->GetLayoutText()); 399 400 // Text with valid surrogates before and after the reveal index. 401 const base::char16 valid_surrogates[] = 402 {0xD800, 0xDC00, 'h', 'o', 'p', 0xD800, 0xDC00, 0}; 403 render_text->SetText(valid_surrogates); 404 EXPECT_EQ(ASCIIToUTF16("*****"), render_text->GetLayoutText()); 405 render_text->RenderText::SetObscuredRevealIndex(0); 406 const base::char16 valid_expect_0_and_1[] = 407 {0xD800, 0xDC00, '*', '*', '*', '*', 0}; 408 EXPECT_EQ(valid_expect_0_and_1, render_text->GetLayoutText()); 409 render_text->RenderText::SetObscuredRevealIndex(1); 410 EXPECT_EQ(valid_expect_0_and_1, render_text->GetLayoutText()); 411 render_text->RenderText::SetObscuredRevealIndex(2); 412 EXPECT_EQ(ASCIIToUTF16("*h***"), render_text->GetLayoutText()); 413 render_text->RenderText::SetObscuredRevealIndex(5); 414 const base::char16 valid_expect_5_and_6[] = 415 {'*', '*', '*', '*', 0xD800, 0xDC00, 0}; 416 EXPECT_EQ(valid_expect_5_and_6, render_text->GetLayoutText()); 417 render_text->RenderText::SetObscuredRevealIndex(6); 418 EXPECT_EQ(valid_expect_5_and_6, render_text->GetLayoutText()); 419 } 420 421 TEST_F(RenderTextTest, ElidedText) { 422 // TODO(skanuj) : Add more test cases for following 423 // - RenderText styles. 424 // - Cross interaction of truncate, elide and obscure. 425 // - ElideText tests from text_elider.cc. 426 struct { 427 const wchar_t* text; 428 const wchar_t* layout_text; 429 const bool elision_expected; 430 } cases[] = { 431 // Strings shorter than the elision width should be laid out in full. 432 { L"", L"" , false }, 433 { L"M", L"" , false }, 434 { L" . ", L" . " , false }, 435 { kWeak, kWeak , false }, 436 { kLtr, kLtr , false }, 437 { kLtrRtl, kLtrRtl , false }, 438 { kLtrRtlLtr, kLtrRtlLtr, false }, 439 { kRtl, kRtl , false }, 440 { kRtlLtr, kRtlLtr , false }, 441 { kRtlLtrRtl, kRtlLtrRtl, false }, 442 // Strings as long as the elision width should be laid out in full. 443 { L"012ab", L"012ab" , false }, 444 // Long strings should be elided with an ellipsis appended at the end. 445 { L"012abc", L"012a\x2026", true }, 446 { L"012ab" L"\x5d0\x5d1", L"012a\x2026", true }, 447 { L"012a" L"\x5d1" L"b", L"012a\x2026", true }, 448 // No RLM marker added as digits (012) have weak directionality. 449 { L"01" L"\x5d0\x5d1\x5d2", L"01\x5d0\x5d1\x2026", true }, 450 // RLM marker added as "ab" have strong LTR directionality. 451 { L"ab" L"\x5d0\x5d1\x5d2", L"ab\x5d0\x5d1\x2026\x200f", true }, 452 // Complex script is not handled. In this example, the "\x0915\x093f" is a 453 // compound glyph, but only half of it is elided. 454 { L"0123\x0915\x093f", L"0123\x0915\x2026", true }, 455 // Surrogate pairs should be elided reasonably enough. 456 { L"0\x05e9\x05bc\x05c1\x05b8", L"0\x05e9\x05bc\x05c1\x05b8", false }, 457 { L"0\x05e9\x05bc\x05c1\x05b8", L"0\x05e9\x05bc\x2026" , true }, 458 { L"01\x05e9\x05bc\x05c1\x05b8", L"01\x05e9\x2026" , true }, 459 { L"012\x05e9\x05bc\x05c1\x05b8", L"012\x2026\x200E" , true }, 460 { L"012\xF0\x9D\x84\x9E", L"012\xF0\x2026" , true }, 461 }; 462 463 scoped_ptr<RenderText> expected_render_text(RenderText::CreateInstance()); 464 expected_render_text->SetFontList(FontList("serif, Sans serif, 12px")); 465 expected_render_text->SetDisplayRect(Rect(0, 0, 9999, 100)); 466 467 scoped_ptr<RenderText> render_text(RenderText::CreateInstance()); 468 render_text->SetFontList(FontList("serif, Sans serif, 12px")); 469 render_text->SetElideBehavior(ELIDE_TAIL); 470 471 for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); i++) { 472 // Compute expected width 473 expected_render_text->SetText(WideToUTF16(cases[i].layout_text)); 474 int expected_width = expected_render_text->GetContentWidth(); 475 476 base::string16 input = WideToUTF16(cases[i].text); 477 // Extend the input text to ensure that it is wider than the layout_text, 478 // and so it will get elided. 479 if (cases[i].elision_expected) 480 input.append(WideToUTF16(L" MMMMMMMMMMM")); 481 482 render_text->SetText(input); 483 render_text->SetDisplayRect(Rect(0, 0, expected_width, 100)); 484 EXPECT_EQ(input, render_text->text()) 485 << "->For case " << i << ": " << cases[i].text << "\n"; 486 EXPECT_EQ(WideToUTF16(cases[i].layout_text), render_text->GetLayoutText()) 487 << "->For case " << i << ": " << cases[i].text << "\n"; 488 expected_render_text->SetText(base::string16()); 489 } 490 } 491 492 TEST_F(RenderTextTest, ElidedObscuredText) { 493 scoped_ptr<RenderText> expected_render_text(RenderText::CreateInstance()); 494 expected_render_text->SetFontList(FontList("serif, Sans serif, 12px")); 495 expected_render_text->SetDisplayRect(Rect(0, 0, 9999, 100)); 496 expected_render_text->SetText(WideToUTF16(L"**\x2026")); 497 498 scoped_ptr<RenderText> render_text(RenderText::CreateInstance()); 499 render_text->SetFontList(FontList("serif, Sans serif, 12px")); 500 render_text->SetElideBehavior(ELIDE_TAIL); 501 render_text->SetDisplayRect( 502 Rect(0, 0, expected_render_text->GetContentWidth(), 100)); 503 render_text->SetObscured(true); 504 render_text->SetText(WideToUTF16(L"abcdef")); 505 EXPECT_EQ(WideToUTF16(L"abcdef"), render_text->text()); 506 EXPECT_EQ(WideToUTF16(L"**\x2026"), render_text->GetLayoutText()); 507 } 508 509 TEST_F(RenderTextTest, TruncatedText) { 510 struct { 511 const wchar_t* text; 512 const wchar_t* layout_text; 513 } cases[] = { 514 // Strings shorter than the truncation length should be laid out in full. 515 { L"", L"" }, 516 { kWeak, kWeak }, 517 { kLtr, kLtr }, 518 { kLtrRtl, kLtrRtl }, 519 { kLtrRtlLtr, kLtrRtlLtr }, 520 { kRtl, kRtl }, 521 { kRtlLtr, kRtlLtr }, 522 { kRtlLtrRtl, kRtlLtrRtl }, 523 // Strings as long as the truncation length should be laid out in full. 524 { L"01234", L"01234" }, 525 // Long strings should be truncated with an ellipsis appended at the end. 526 { L"012345", L"0123\x2026" }, 527 { L"012" L" . ", L"012 \x2026" }, 528 { L"012" L"abc", L"012a\x2026" }, 529 { L"012" L"a" L"\x5d0\x5d1", L"012a\x2026" }, 530 { L"012" L"a" L"\x5d1" L"b", L"012a\x2026" }, 531 { L"012" L"\x5d0\x5d1\x5d2", L"012\x5d0\x2026" }, 532 { L"012" L"\x5d0\x5d1" L"a", L"012\x5d0\x2026" }, 533 { L"012" L"\x5d0" L"a" L"\x5d1", L"012\x5d0\x2026" }, 534 // Surrogate pairs should be truncated reasonably enough. 535 { L"0123\x0915\x093f", L"0123\x2026" }, 536 { L"0\x05e9\x05bc\x05c1\x05b8", L"0\x05e9\x05bc\x05c1\x05b8" }, 537 { L"01\x05e9\x05bc\x05c1\x05b8", L"01\x05e9\x05bc\x2026" }, 538 { L"012\x05e9\x05bc\x05c1\x05b8", L"012\x05e9\x2026" }, 539 { L"0123\x05e9\x05bc\x05c1\x05b8", L"0123\x2026" }, 540 { L"01234\x05e9\x05bc\x05c1\x05b8", L"0123\x2026" }, 541 { L"012\xF0\x9D\x84\x9E", L"012\xF0\x2026" }, 542 }; 543 544 scoped_ptr<RenderText> render_text(RenderText::CreateInstance()); 545 render_text->set_truncate_length(5); 546 for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); i++) { 547 render_text->SetText(WideToUTF16(cases[i].text)); 548 EXPECT_EQ(WideToUTF16(cases[i].text), render_text->text()); 549 EXPECT_EQ(WideToUTF16(cases[i].layout_text), render_text->GetLayoutText()) 550 << "For case " << i << ": " << cases[i].text; 551 } 552 } 553 554 TEST_F(RenderTextTest, TruncatedObscuredText) { 555 scoped_ptr<RenderText> render_text(RenderText::CreateInstance()); 556 render_text->set_truncate_length(3); 557 render_text->SetObscured(true); 558 render_text->SetText(WideToUTF16(L"abcdef")); 559 EXPECT_EQ(WideToUTF16(L"abcdef"), render_text->text()); 560 EXPECT_EQ(WideToUTF16(L"**\x2026"), render_text->GetLayoutText()); 561 } 562 563 TEST_F(RenderTextTest, TruncatedCursorMovementLTR) { 564 scoped_ptr<RenderText> render_text(RenderText::CreateInstance()); 565 render_text->set_truncate_length(2); 566 render_text->SetText(WideToUTF16(L"abcd")); 567 568 EXPECT_EQ(SelectionModel(0, CURSOR_BACKWARD), render_text->selection_model()); 569 render_text->MoveCursor(LINE_BREAK, CURSOR_RIGHT, false); 570 EXPECT_EQ(SelectionModel(4, CURSOR_FORWARD), render_text->selection_model()); 571 render_text->MoveCursor(LINE_BREAK, CURSOR_LEFT, false); 572 EXPECT_EQ(SelectionModel(0, CURSOR_BACKWARD), render_text->selection_model()); 573 574 std::vector<SelectionModel> expected; 575 expected.push_back(SelectionModel(0, CURSOR_BACKWARD)); 576 expected.push_back(SelectionModel(1, CURSOR_BACKWARD)); 577 // The cursor hops over the ellipsis and elided text to the line end. 578 expected.push_back(SelectionModel(4, CURSOR_BACKWARD)); 579 expected.push_back(SelectionModel(4, CURSOR_FORWARD)); 580 RunMoveCursorLeftRightTest(render_text.get(), expected, CURSOR_RIGHT); 581 582 expected.clear(); 583 expected.push_back(SelectionModel(4, CURSOR_FORWARD)); 584 // The cursor hops over the elided text to preceeding text. 585 expected.push_back(SelectionModel(1, CURSOR_FORWARD)); 586 expected.push_back(SelectionModel(0, CURSOR_FORWARD)); 587 expected.push_back(SelectionModel(0, CURSOR_BACKWARD)); 588 RunMoveCursorLeftRightTest(render_text.get(), expected, CURSOR_LEFT); 589 } 590 591 TEST_F(RenderTextTest, TruncatedCursorMovementRTL) { 592 scoped_ptr<RenderText> render_text(RenderText::CreateInstance()); 593 render_text->set_truncate_length(2); 594 render_text->SetText(WideToUTF16(L"\x5d0\x5d1\x5d2\x5d3")); 595 596 EXPECT_EQ(SelectionModel(0, CURSOR_BACKWARD), render_text->selection_model()); 597 render_text->MoveCursor(LINE_BREAK, CURSOR_LEFT, false); 598 EXPECT_EQ(SelectionModel(4, CURSOR_FORWARD), render_text->selection_model()); 599 render_text->MoveCursor(LINE_BREAK, CURSOR_RIGHT, false); 600 EXPECT_EQ(SelectionModel(0, CURSOR_BACKWARD), render_text->selection_model()); 601 602 std::vector<SelectionModel> expected; 603 expected.push_back(SelectionModel(0, CURSOR_BACKWARD)); 604 expected.push_back(SelectionModel(1, CURSOR_BACKWARD)); 605 // The cursor hops over the ellipsis and elided text to the line end. 606 expected.push_back(SelectionModel(4, CURSOR_BACKWARD)); 607 expected.push_back(SelectionModel(4, CURSOR_FORWARD)); 608 RunMoveCursorLeftRightTest(render_text.get(), expected, CURSOR_LEFT); 609 610 expected.clear(); 611 expected.push_back(SelectionModel(4, CURSOR_FORWARD)); 612 // The cursor hops over the elided text to preceeding text. 613 expected.push_back(SelectionModel(1, CURSOR_FORWARD)); 614 expected.push_back(SelectionModel(0, CURSOR_FORWARD)); 615 expected.push_back(SelectionModel(0, CURSOR_BACKWARD)); 616 RunMoveCursorLeftRightTest(render_text.get(), expected, CURSOR_RIGHT); 617 } 618 619 TEST_F(RenderTextTest, GetTextDirection) { 620 struct { 621 const wchar_t* text; 622 const base::i18n::TextDirection text_direction; 623 } cases[] = { 624 // Blank strings and those with no/weak directionality default to LTR. 625 { L"", base::i18n::LEFT_TO_RIGHT }, 626 { kWeak, base::i18n::LEFT_TO_RIGHT }, 627 // Strings that begin with strong LTR characters. 628 { kLtr, base::i18n::LEFT_TO_RIGHT }, 629 { kLtrRtl, base::i18n::LEFT_TO_RIGHT }, 630 { kLtrRtlLtr, base::i18n::LEFT_TO_RIGHT }, 631 // Strings that begin with strong RTL characters. 632 { kRtl, base::i18n::RIGHT_TO_LEFT }, 633 { kRtlLtr, base::i18n::RIGHT_TO_LEFT }, 634 { kRtlLtrRtl, base::i18n::RIGHT_TO_LEFT }, 635 }; 636 637 scoped_ptr<RenderText> render_text(RenderText::CreateInstance()); 638 const bool was_rtl = base::i18n::IsRTL(); 639 640 for (size_t i = 0; i < 2; ++i) { 641 // Toggle the application default text direction (to try each direction). 642 SetRTL(!base::i18n::IsRTL()); 643 const base::i18n::TextDirection ui_direction = base::i18n::IsRTL() ? 644 base::i18n::RIGHT_TO_LEFT : base::i18n::LEFT_TO_RIGHT; 645 646 // Ensure that directionality modes yield the correct text directions. 647 for (size_t j = 0; j < ARRAYSIZE_UNSAFE(cases); j++) { 648 render_text->SetText(WideToUTF16(cases[j].text)); 649 render_text->SetDirectionalityMode(DIRECTIONALITY_FROM_TEXT); 650 EXPECT_EQ(render_text->GetTextDirection(), cases[j].text_direction); 651 render_text->SetDirectionalityMode(DIRECTIONALITY_FROM_UI); 652 EXPECT_EQ(render_text->GetTextDirection(), ui_direction); 653 render_text->SetDirectionalityMode(DIRECTIONALITY_FORCE_LTR); 654 EXPECT_EQ(render_text->GetTextDirection(), base::i18n::LEFT_TO_RIGHT); 655 render_text->SetDirectionalityMode(DIRECTIONALITY_FORCE_RTL); 656 EXPECT_EQ(render_text->GetTextDirection(), base::i18n::RIGHT_TO_LEFT); 657 } 658 } 659 660 EXPECT_EQ(was_rtl, base::i18n::IsRTL()); 661 662 // Ensure that text changes update the direction for DIRECTIONALITY_FROM_TEXT. 663 render_text->SetDirectionalityMode(DIRECTIONALITY_FROM_TEXT); 664 render_text->SetText(WideToUTF16(kLtr)); 665 EXPECT_EQ(render_text->GetTextDirection(), base::i18n::LEFT_TO_RIGHT); 666 render_text->SetText(WideToUTF16(kRtl)); 667 EXPECT_EQ(render_text->GetTextDirection(), base::i18n::RIGHT_TO_LEFT); 668 } 669 670 TEST_F(RenderTextTest, MoveCursorLeftRightInLtr) { 671 scoped_ptr<RenderText> render_text(RenderText::CreateInstance()); 672 673 // Pure LTR. 674 render_text->SetText(ASCIIToUTF16("abc")); 675 // |expected| saves the expected SelectionModel when moving cursor from left 676 // to right. 677 std::vector<SelectionModel> expected; 678 expected.push_back(SelectionModel(0, CURSOR_BACKWARD)); 679 expected.push_back(SelectionModel(1, CURSOR_BACKWARD)); 680 expected.push_back(SelectionModel(2, CURSOR_BACKWARD)); 681 expected.push_back(SelectionModel(3, CURSOR_BACKWARD)); 682 expected.push_back(SelectionModel(3, CURSOR_FORWARD)); 683 RunMoveCursorLeftRightTest(render_text.get(), expected, CURSOR_RIGHT); 684 685 expected.clear(); 686 expected.push_back(SelectionModel(3, CURSOR_FORWARD)); 687 expected.push_back(SelectionModel(2, CURSOR_FORWARD)); 688 expected.push_back(SelectionModel(1, CURSOR_FORWARD)); 689 expected.push_back(SelectionModel(0, CURSOR_FORWARD)); 690 expected.push_back(SelectionModel(0, CURSOR_BACKWARD)); 691 RunMoveCursorLeftRightTest(render_text.get(), expected, CURSOR_LEFT); 692 } 693 694 TEST_F(RenderTextTest, MoveCursorLeftRightInLtrRtl) { 695 scoped_ptr<RenderText> render_text(RenderText::CreateInstance()); 696 // LTR-RTL 697 render_text->SetText(WideToUTF16(L"abc\x05d0\x05d1\x05d2")); 698 // The last one is the expected END position. 699 std::vector<SelectionModel> expected; 700 expected.push_back(SelectionModel(0, CURSOR_BACKWARD)); 701 expected.push_back(SelectionModel(1, CURSOR_BACKWARD)); 702 expected.push_back(SelectionModel(2, CURSOR_BACKWARD)); 703 expected.push_back(SelectionModel(3, CURSOR_BACKWARD)); 704 expected.push_back(SelectionModel(5, CURSOR_FORWARD)); 705 expected.push_back(SelectionModel(4, CURSOR_FORWARD)); 706 expected.push_back(SelectionModel(3, CURSOR_FORWARD)); 707 expected.push_back(SelectionModel(6, CURSOR_FORWARD)); 708 RunMoveCursorLeftRightTest(render_text.get(), expected, CURSOR_RIGHT); 709 710 expected.clear(); 711 expected.push_back(SelectionModel(6, CURSOR_FORWARD)); 712 expected.push_back(SelectionModel(4, CURSOR_BACKWARD)); 713 expected.push_back(SelectionModel(5, CURSOR_BACKWARD)); 714 expected.push_back(SelectionModel(6, CURSOR_BACKWARD)); 715 expected.push_back(SelectionModel(2, CURSOR_FORWARD)); 716 expected.push_back(SelectionModel(1, CURSOR_FORWARD)); 717 expected.push_back(SelectionModel(0, CURSOR_FORWARD)); 718 expected.push_back(SelectionModel(0, CURSOR_BACKWARD)); 719 RunMoveCursorLeftRightTest(render_text.get(), expected, CURSOR_LEFT); 720 } 721 722 TEST_F(RenderTextTest, MoveCursorLeftRightInLtrRtlLtr) { 723 scoped_ptr<RenderText> render_text(RenderText::CreateInstance()); 724 // LTR-RTL-LTR. 725 render_text->SetText(WideToUTF16(L"a" L"\x05d1" L"b")); 726 std::vector<SelectionModel> expected; 727 expected.push_back(SelectionModel(0, CURSOR_BACKWARD)); 728 expected.push_back(SelectionModel(1, CURSOR_BACKWARD)); 729 expected.push_back(SelectionModel(1, CURSOR_FORWARD)); 730 expected.push_back(SelectionModel(3, CURSOR_BACKWARD)); 731 expected.push_back(SelectionModel(3, CURSOR_FORWARD)); 732 RunMoveCursorLeftRightTest(render_text.get(), expected, CURSOR_RIGHT); 733 734 expected.clear(); 735 expected.push_back(SelectionModel(3, CURSOR_FORWARD)); 736 expected.push_back(SelectionModel(2, CURSOR_FORWARD)); 737 expected.push_back(SelectionModel(2, CURSOR_BACKWARD)); 738 expected.push_back(SelectionModel(0, CURSOR_FORWARD)); 739 expected.push_back(SelectionModel(0, CURSOR_BACKWARD)); 740 RunMoveCursorLeftRightTest(render_text.get(), expected, CURSOR_LEFT); 741 } 742 743 TEST_F(RenderTextTest, MoveCursorLeftRightInRtl) { 744 scoped_ptr<RenderText> render_text(RenderText::CreateInstance()); 745 // Pure RTL. 746 render_text->SetText(WideToUTF16(L"\x05d0\x05d1\x05d2")); 747 render_text->MoveCursor(LINE_BREAK, CURSOR_RIGHT, false); 748 std::vector<SelectionModel> expected; 749 750 expected.push_back(SelectionModel(0, CURSOR_BACKWARD)); 751 expected.push_back(SelectionModel(1, CURSOR_BACKWARD)); 752 expected.push_back(SelectionModel(2, CURSOR_BACKWARD)); 753 expected.push_back(SelectionModel(3, CURSOR_BACKWARD)); 754 expected.push_back(SelectionModel(3, CURSOR_FORWARD)); 755 RunMoveCursorLeftRightTest(render_text.get(), expected, CURSOR_LEFT); 756 757 expected.clear(); 758 759 expected.push_back(SelectionModel(3, CURSOR_FORWARD)); 760 expected.push_back(SelectionModel(2, CURSOR_FORWARD)); 761 expected.push_back(SelectionModel(1, CURSOR_FORWARD)); 762 expected.push_back(SelectionModel(0, CURSOR_FORWARD)); 763 expected.push_back(SelectionModel(0, CURSOR_BACKWARD)); 764 RunMoveCursorLeftRightTest(render_text.get(), expected, CURSOR_RIGHT); 765 } 766 767 TEST_F(RenderTextTest, MoveCursorLeftRightInRtlLtr) { 768 scoped_ptr<RenderText> render_text(RenderText::CreateInstance()); 769 // RTL-LTR 770 render_text->SetText(WideToUTF16(L"\x05d0\x05d1\x05d2" L"abc")); 771 render_text->MoveCursor(LINE_BREAK, CURSOR_RIGHT, false); 772 std::vector<SelectionModel> expected; 773 expected.push_back(SelectionModel(0, CURSOR_BACKWARD)); 774 expected.push_back(SelectionModel(1, CURSOR_BACKWARD)); 775 expected.push_back(SelectionModel(2, CURSOR_BACKWARD)); 776 expected.push_back(SelectionModel(3, CURSOR_BACKWARD)); 777 expected.push_back(SelectionModel(5, CURSOR_FORWARD)); 778 expected.push_back(SelectionModel(4, CURSOR_FORWARD)); 779 expected.push_back(SelectionModel(3, CURSOR_FORWARD)); 780 expected.push_back(SelectionModel(6, CURSOR_FORWARD)); 781 RunMoveCursorLeftRightTest(render_text.get(), expected, CURSOR_LEFT); 782 783 expected.clear(); 784 expected.push_back(SelectionModel(6, CURSOR_FORWARD)); 785 expected.push_back(SelectionModel(4, CURSOR_BACKWARD)); 786 expected.push_back(SelectionModel(5, CURSOR_BACKWARD)); 787 expected.push_back(SelectionModel(6, CURSOR_BACKWARD)); 788 expected.push_back(SelectionModel(2, CURSOR_FORWARD)); 789 expected.push_back(SelectionModel(1, CURSOR_FORWARD)); 790 expected.push_back(SelectionModel(0, CURSOR_FORWARD)); 791 expected.push_back(SelectionModel(0, CURSOR_BACKWARD)); 792 RunMoveCursorLeftRightTest(render_text.get(), expected, CURSOR_RIGHT); 793 } 794 795 TEST_F(RenderTextTest, MoveCursorLeftRightInRtlLtrRtl) { 796 scoped_ptr<RenderText> render_text(RenderText::CreateInstance()); 797 // RTL-LTR-RTL. 798 render_text->SetText(WideToUTF16(L"\x05d0" L"a" L"\x05d1")); 799 render_text->MoveCursor(LINE_BREAK, CURSOR_RIGHT, false); 800 std::vector<SelectionModel> expected; 801 expected.push_back(SelectionModel(0, CURSOR_BACKWARD)); 802 expected.push_back(SelectionModel(1, CURSOR_BACKWARD)); 803 expected.push_back(SelectionModel(1, CURSOR_FORWARD)); 804 expected.push_back(SelectionModel(3, CURSOR_BACKWARD)); 805 expected.push_back(SelectionModel(3, CURSOR_FORWARD)); 806 RunMoveCursorLeftRightTest(render_text.get(), expected, CURSOR_LEFT); 807 808 expected.clear(); 809 expected.push_back(SelectionModel(3, CURSOR_FORWARD)); 810 expected.push_back(SelectionModel(2, CURSOR_FORWARD)); 811 expected.push_back(SelectionModel(2, CURSOR_BACKWARD)); 812 expected.push_back(SelectionModel(0, CURSOR_FORWARD)); 813 expected.push_back(SelectionModel(0, CURSOR_BACKWARD)); 814 RunMoveCursorLeftRightTest(render_text.get(), expected, CURSOR_RIGHT); 815 } 816 817 // TODO(xji): temporarily disable in platform Win since the complex script 818 // characters turned into empty square due to font regression. So, not able 819 // to test 2 characters belong to the same grapheme. 820 #if defined(OS_LINUX) 821 TEST_F(RenderTextTest, MoveCursorLeftRight_ComplexScript) { 822 scoped_ptr<RenderText> render_text(RenderText::CreateInstance()); 823 824 render_text->SetText(WideToUTF16(L"\x0915\x093f\x0915\x094d\x0915")); 825 EXPECT_EQ(0U, render_text->cursor_position()); 826 render_text->MoveCursor(CHARACTER_BREAK, CURSOR_RIGHT, false); 827 EXPECT_EQ(2U, render_text->cursor_position()); 828 render_text->MoveCursor(CHARACTER_BREAK, CURSOR_RIGHT, false); 829 EXPECT_EQ(4U, render_text->cursor_position()); 830 render_text->MoveCursor(CHARACTER_BREAK, CURSOR_RIGHT, false); 831 EXPECT_EQ(5U, render_text->cursor_position()); 832 render_text->MoveCursor(CHARACTER_BREAK, CURSOR_RIGHT, false); 833 EXPECT_EQ(5U, render_text->cursor_position()); 834 835 render_text->MoveCursor(CHARACTER_BREAK, CURSOR_LEFT, false); 836 EXPECT_EQ(4U, render_text->cursor_position()); 837 render_text->MoveCursor(CHARACTER_BREAK, CURSOR_LEFT, false); 838 EXPECT_EQ(2U, render_text->cursor_position()); 839 render_text->MoveCursor(CHARACTER_BREAK, CURSOR_LEFT, false); 840 EXPECT_EQ(0U, render_text->cursor_position()); 841 render_text->MoveCursor(CHARACTER_BREAK, CURSOR_LEFT, false); 842 EXPECT_EQ(0U, render_text->cursor_position()); 843 } 844 #endif 845 846 // TODO(ckocagil): Enable for RenderTextHarfBuzz. http://crbug.com/383265 847 TEST_F(RenderTextTest, MoveCursorLeftRight_MeiryoUILigatures) { 848 scoped_ptr<RenderText> render_text(RenderText::CreateNativeInstance()); 849 // Meiryo UI uses single-glyph ligatures for 'ff' and 'ffi', but each letter 850 // (code point) has unique bounds, so mid-glyph cursoring should be possible. 851 render_text->SetFontList(FontList("Meiryo UI, 12px")); 852 render_text->SetText(WideToUTF16(L"ff ffi")); 853 EXPECT_EQ(0U, render_text->cursor_position()); 854 for (size_t i = 0; i < render_text->text().length(); ++i) { 855 render_text->MoveCursor(CHARACTER_BREAK, CURSOR_RIGHT, false); 856 EXPECT_EQ(i + 1, render_text->cursor_position()); 857 } 858 EXPECT_EQ(6U, render_text->cursor_position()); 859 } 860 861 TEST_F(RenderTextTest, GraphemePositions) { 862 // LTR 2-character grapheme, LTR abc, LTR 2-character grapheme. 863 const base::string16 kText1 = 864 WideToUTF16(L"\x0915\x093f" L"abc" L"\x0915\x093f"); 865 866 // LTR ab, LTR 2-character grapheme, LTR cd. 867 const base::string16 kText2 = WideToUTF16(L"ab" L"\x0915\x093f" L"cd"); 868 869 // The below is 'MUSICAL SYMBOL G CLEF', which is represented in UTF-16 as 870 // two characters forming the surrogate pair 0x0001D11E. 871 const std::string kSurrogate = "\xF0\x9D\x84\x9E"; 872 873 // LTR ab, UTF16 surrogate pair, LTR cd. 874 const base::string16 kText3 = UTF8ToUTF16("ab" + kSurrogate + "cd"); 875 876 struct { 877 base::string16 text; 878 size_t index; 879 size_t expected_previous; 880 size_t expected_next; 881 } cases[] = { 882 { base::string16(), 0, 0, 0 }, 883 { base::string16(), 1, 0, 0 }, 884 { base::string16(), 50, 0, 0 }, 885 { kText1, 0, 0, 2 }, 886 { kText1, 1, 0, 2 }, 887 { kText1, 2, 0, 3 }, 888 { kText1, 3, 2, 4 }, 889 { kText1, 4, 3, 5 }, 890 { kText1, 5, 4, 7 }, 891 { kText1, 6, 5, 7 }, 892 { kText1, 7, 5, 7 }, 893 { kText1, 8, 7, 7 }, 894 { kText1, 50, 7, 7 }, 895 { kText2, 0, 0, 1 }, 896 { kText2, 1, 0, 2 }, 897 { kText2, 2, 1, 4 }, 898 { kText2, 3, 2, 4 }, 899 { kText2, 4, 2, 5 }, 900 { kText2, 5, 4, 6 }, 901 { kText2, 6, 5, 6 }, 902 { kText2, 7, 6, 6 }, 903 { kText2, 50, 6, 6 }, 904 { kText3, 0, 0, 1 }, 905 { kText3, 1, 0, 2 }, 906 { kText3, 2, 1, 4 }, 907 { kText3, 3, 2, 4 }, 908 { kText3, 4, 2, 5 }, 909 { kText3, 5, 4, 6 }, 910 { kText3, 6, 5, 6 }, 911 { kText3, 7, 6, 6 }, 912 { kText3, 50, 6, 6 }, 913 }; 914 915 #if defined(OS_WIN) 916 // TODO(msw): XP fails due to lack of font support: http://crbug.com/106450 917 if (base::win::GetVersion() < base::win::VERSION_VISTA) 918 return; 919 #endif 920 921 scoped_ptr<RenderText> render_text(RenderText::CreateInstance()); 922 for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); i++) { 923 SCOPED_TRACE(base::StringPrintf("Testing cases[%" PRIuS "]", i)); 924 render_text->SetText(cases[i].text); 925 926 size_t next = render_text->IndexOfAdjacentGrapheme(cases[i].index, 927 CURSOR_FORWARD); 928 EXPECT_EQ(cases[i].expected_next, next); 929 EXPECT_TRUE(render_text->IsValidCursorIndex(next)); 930 931 size_t previous = render_text->IndexOfAdjacentGrapheme(cases[i].index, 932 CURSOR_BACKWARD); 933 EXPECT_EQ(cases[i].expected_previous, previous); 934 EXPECT_TRUE(render_text->IsValidCursorIndex(previous)); 935 } 936 } 937 938 TEST_F(RenderTextTest, MidGraphemeSelectionBounds) { 939 #if defined(OS_WIN) 940 // TODO(msw): XP fails due to lack of font support: http://crbug.com/106450 941 if (base::win::GetVersion() < base::win::VERSION_VISTA) 942 return; 943 #endif 944 945 // Test that selection bounds may be set amid multi-character graphemes. 946 const base::string16 kHindi = WideToUTF16(L"\x0915\x093f"); 947 const base::string16 kThai = WideToUTF16(L"\x0e08\x0e33"); 948 const base::string16 cases[] = { kHindi, kThai }; 949 950 scoped_ptr<RenderText> render_text(RenderText::CreateInstance()); 951 for (size_t i = 0; i < arraysize(cases); i++) { 952 SCOPED_TRACE(base::StringPrintf("Testing cases[%" PRIuS "]", i)); 953 render_text->SetText(cases[i]); 954 EXPECT_TRUE(render_text->IsValidLogicalIndex(1)); 955 #if !defined(OS_MACOSX) 956 EXPECT_FALSE(render_text->IsValidCursorIndex(1)); 957 #endif 958 EXPECT_TRUE(render_text->SelectRange(Range(2, 1))); 959 EXPECT_EQ(Range(2, 1), render_text->selection()); 960 EXPECT_EQ(1U, render_text->cursor_position()); 961 // Although selection bounds may be set within a multi-character grapheme, 962 // cursor movement (e.g. via arrow key) should avoid those indices. 963 render_text->MoveCursor(CHARACTER_BREAK, CURSOR_LEFT, false); 964 EXPECT_EQ(0U, render_text->cursor_position()); 965 render_text->MoveCursor(CHARACTER_BREAK, CURSOR_RIGHT, false); 966 EXPECT_EQ(2U, render_text->cursor_position()); 967 } 968 } 969 970 TEST_F(RenderTextTest, FindCursorPosition) { 971 const wchar_t* kTestStrings[] = { kLtrRtl, kLtrRtlLtr, kRtlLtr, kRtlLtrRtl }; 972 scoped_ptr<RenderText> render_text(RenderText::CreateInstance()); 973 render_text->SetDisplayRect(Rect(0, 0, 100, 20)); 974 for (size_t i = 0; i < arraysize(kTestStrings); ++i) { 975 SCOPED_TRACE(base::StringPrintf("Testing case[%" PRIuS "]", i)); 976 render_text->SetText(WideToUTF16(kTestStrings[i])); 977 for(size_t j = 0; j < render_text->text().length(); ++j) { 978 const Range range(render_text->GetGlyphBounds(j)); 979 // Test a point just inside the leading edge of the glyph bounds. 980 int x = range.is_reversed() ? range.GetMax() - 1 : range.GetMin() + 1; 981 EXPECT_EQ(j, render_text->FindCursorPosition(Point(x, 0)).caret_pos()); 982 } 983 } 984 } 985 986 TEST_F(RenderTextTest, EdgeSelectionModels) { 987 // Simple Latin text. 988 const base::string16 kLatin = WideToUTF16(L"abc"); 989 // LTR 2-character grapheme. 990 const base::string16 kLTRGrapheme = WideToUTF16(L"\x0915\x093f"); 991 // LTR 2-character grapheme, LTR a, LTR 2-character grapheme. 992 const base::string16 kHindiLatin = 993 WideToUTF16(L"\x0915\x093f" L"a" L"\x0915\x093f"); 994 // RTL 2-character grapheme. 995 const base::string16 kRTLGrapheme = WideToUTF16(L"\x05e0\x05b8"); 996 // RTL 2-character grapheme, LTR a, RTL 2-character grapheme. 997 const base::string16 kHebrewLatin = 998 WideToUTF16(L"\x05e0\x05b8" L"a" L"\x05e0\x05b8"); 999 1000 struct { 1001 base::string16 text; 1002 base::i18n::TextDirection expected_text_direction; 1003 } cases[] = { 1004 { base::string16(), base::i18n::LEFT_TO_RIGHT }, 1005 { kLatin, base::i18n::LEFT_TO_RIGHT }, 1006 { kLTRGrapheme, base::i18n::LEFT_TO_RIGHT }, 1007 { kHindiLatin, base::i18n::LEFT_TO_RIGHT }, 1008 { kRTLGrapheme, base::i18n::RIGHT_TO_LEFT }, 1009 { kHebrewLatin, base::i18n::RIGHT_TO_LEFT }, 1010 }; 1011 1012 #if defined(OS_WIN) 1013 // TODO(msw): XP fails due to lack of font support: http://crbug.com/106450 1014 if (base::win::GetVersion() < base::win::VERSION_VISTA) 1015 return; 1016 #endif 1017 1018 scoped_ptr<RenderText> render_text(RenderText::CreateInstance()); 1019 for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); i++) { 1020 render_text->SetText(cases[i].text); 1021 bool ltr = (cases[i].expected_text_direction == base::i18n::LEFT_TO_RIGHT); 1022 1023 SelectionModel start_edge = 1024 render_text->EdgeSelectionModel(ltr ? CURSOR_LEFT : CURSOR_RIGHT); 1025 EXPECT_EQ(start_edge, SelectionModel(0, CURSOR_BACKWARD)); 1026 1027 SelectionModel end_edge = 1028 render_text->EdgeSelectionModel(ltr ? CURSOR_RIGHT : CURSOR_LEFT); 1029 EXPECT_EQ(end_edge, SelectionModel(cases[i].text.length(), CURSOR_FORWARD)); 1030 } 1031 } 1032 1033 TEST_F(RenderTextTest, SelectAll) { 1034 const wchar_t* const cases[] = 1035 { kWeak, kLtr, kLtrRtl, kLtrRtlLtr, kRtl, kRtlLtr, kRtlLtrRtl }; 1036 1037 // Ensure that SelectAll respects the |reversed| argument regardless of 1038 // application locale and text content directionality. 1039 scoped_ptr<RenderText> render_text(RenderText::CreateInstance()); 1040 const SelectionModel expected_reversed(Range(3, 0), CURSOR_FORWARD); 1041 const SelectionModel expected_forwards(Range(0, 3), CURSOR_BACKWARD); 1042 const bool was_rtl = base::i18n::IsRTL(); 1043 1044 for (size_t i = 0; i < 2; ++i) { 1045 SetRTL(!base::i18n::IsRTL()); 1046 // Test that an empty string produces an empty selection model. 1047 render_text->SetText(base::string16()); 1048 EXPECT_EQ(render_text->selection_model(), SelectionModel()); 1049 1050 // Test the weak, LTR, RTL, and Bidi string cases. 1051 for (size_t j = 0; j < ARRAYSIZE_UNSAFE(cases); j++) { 1052 render_text->SetText(WideToUTF16(cases[j])); 1053 render_text->SelectAll(false); 1054 EXPECT_EQ(render_text->selection_model(), expected_forwards); 1055 render_text->SelectAll(true); 1056 EXPECT_EQ(render_text->selection_model(), expected_reversed); 1057 } 1058 } 1059 1060 EXPECT_EQ(was_rtl, base::i18n::IsRTL()); 1061 } 1062 1063 TEST_F(RenderTextTest, MoveCursorLeftRightWithSelection) { 1064 scoped_ptr<RenderText> render_text(RenderText::CreateInstance()); 1065 render_text->SetText(WideToUTF16(L"abc\x05d0\x05d1\x05d2")); 1066 // Left arrow on select ranging (6, 4). 1067 render_text->MoveCursor(LINE_BREAK, CURSOR_RIGHT, false); 1068 EXPECT_EQ(Range(6), render_text->selection()); 1069 render_text->MoveCursor(CHARACTER_BREAK, CURSOR_LEFT, false); 1070 EXPECT_EQ(Range(4), render_text->selection()); 1071 render_text->MoveCursor(CHARACTER_BREAK, CURSOR_LEFT, false); 1072 EXPECT_EQ(Range(5), render_text->selection()); 1073 render_text->MoveCursor(CHARACTER_BREAK, CURSOR_LEFT, false); 1074 EXPECT_EQ(Range(6), render_text->selection()); 1075 render_text->MoveCursor(CHARACTER_BREAK, CURSOR_RIGHT, true); 1076 EXPECT_EQ(Range(6, 5), render_text->selection()); 1077 render_text->MoveCursor(CHARACTER_BREAK, CURSOR_RIGHT, true); 1078 EXPECT_EQ(Range(6, 4), render_text->selection()); 1079 render_text->MoveCursor(CHARACTER_BREAK, CURSOR_LEFT, false); 1080 EXPECT_EQ(Range(6), render_text->selection()); 1081 1082 // Right arrow on select ranging (4, 6). 1083 render_text->MoveCursor(LINE_BREAK, CURSOR_LEFT, false); 1084 EXPECT_EQ(Range(0), render_text->selection()); 1085 render_text->MoveCursor(CHARACTER_BREAK, CURSOR_RIGHT, false); 1086 EXPECT_EQ(Range(1), render_text->selection()); 1087 render_text->MoveCursor(CHARACTER_BREAK, CURSOR_RIGHT, false); 1088 EXPECT_EQ(Range(2), render_text->selection()); 1089 render_text->MoveCursor(CHARACTER_BREAK, CURSOR_RIGHT, false); 1090 EXPECT_EQ(Range(3), render_text->selection()); 1091 render_text->MoveCursor(CHARACTER_BREAK, CURSOR_RIGHT, false); 1092 EXPECT_EQ(Range(5), render_text->selection()); 1093 render_text->MoveCursor(CHARACTER_BREAK, CURSOR_RIGHT, false); 1094 EXPECT_EQ(Range(4), render_text->selection()); 1095 render_text->MoveCursor(CHARACTER_BREAK, CURSOR_LEFT, true); 1096 EXPECT_EQ(Range(4, 5), render_text->selection()); 1097 render_text->MoveCursor(CHARACTER_BREAK, CURSOR_LEFT, true); 1098 EXPECT_EQ(Range(4, 6), render_text->selection()); 1099 render_text->MoveCursor(CHARACTER_BREAK, CURSOR_RIGHT, false); 1100 EXPECT_EQ(Range(4), render_text->selection()); 1101 } 1102 1103 TEST_F(RenderTextTest, CenteredDisplayOffset) { 1104 scoped_ptr<RenderText> render_text(RenderText::CreateInstance()); 1105 render_text->SetText(ASCIIToUTF16("abcdefghij")); 1106 render_text->SetHorizontalAlignment(ALIGN_CENTER); 1107 1108 const int kEnlargement = 10; 1109 const int content_width = render_text->GetContentWidth(); 1110 Rect display_rect(0, 0, content_width / 2, 1111 render_text->font_list().GetHeight()); 1112 render_text->SetDisplayRect(display_rect); 1113 1114 // Move the cursor to the beginning of the text and, by checking the cursor 1115 // bounds, make sure no empty space is to the left of the text. 1116 render_text->SetCursorPosition(0); 1117 EXPECT_EQ(display_rect.x(), render_text->GetUpdatedCursorBounds().x()); 1118 1119 // Widen the display rect and, by checking the cursor bounds, make sure no 1120 // empty space is introduced to the left of the text. 1121 display_rect.Inset(0, 0, -kEnlargement, 0); 1122 render_text->SetDisplayRect(display_rect); 1123 EXPECT_EQ(display_rect.x(), render_text->GetUpdatedCursorBounds().x()); 1124 1125 // Move the cursor to the end of the text and, by checking the cursor bounds, 1126 // make sure no empty space is to the right of the text. 1127 render_text->SetCursorPosition(render_text->text().length()); 1128 EXPECT_EQ(display_rect.right(), 1129 render_text->GetUpdatedCursorBounds().right()); 1130 1131 // Widen the display rect and, by checking the cursor bounds, make sure no 1132 // empty space is introduced to the right of the text. 1133 display_rect.Inset(0, 0, -kEnlargement, 0); 1134 render_text->SetDisplayRect(display_rect); 1135 EXPECT_EQ(display_rect.right(), 1136 render_text->GetUpdatedCursorBounds().right()); 1137 } 1138 #endif // !defined(OS_MACOSX) 1139 1140 // TODO(xji): Make these work on Windows. 1141 #if defined(OS_LINUX) 1142 void MoveLeftRightByWordVerifier(RenderText* render_text, 1143 const wchar_t* str) { 1144 render_text->SetText(WideToUTF16(str)); 1145 1146 // Test moving by word from left ro right. 1147 render_text->MoveCursor(LINE_BREAK, CURSOR_LEFT, false); 1148 bool first_word = true; 1149 while (true) { 1150 // First, test moving by word from a word break position, such as from 1151 // "|abc def" to "abc| def". 1152 SelectionModel start = render_text->selection_model(); 1153 render_text->MoveCursor(WORD_BREAK, CURSOR_RIGHT, false); 1154 SelectionModel end = render_text->selection_model(); 1155 if (end == start) // reach the end. 1156 break; 1157 1158 // For testing simplicity, each word is a 3-character word. 1159 int num_of_character_moves = first_word ? 3 : 4; 1160 first_word = false; 1161 render_text->MoveCursorTo(start); 1162 for (int j = 0; j < num_of_character_moves; ++j) 1163 render_text->MoveCursor(CHARACTER_BREAK, CURSOR_RIGHT, false); 1164 EXPECT_EQ(end, render_text->selection_model()); 1165 1166 // Then, test moving by word from positions inside the word, such as from 1167 // "a|bc def" to "abc| def", and from "ab|c def" to "abc| def". 1168 for (int j = 1; j < num_of_character_moves; ++j) { 1169 render_text->MoveCursorTo(start); 1170 for (int k = 0; k < j; ++k) 1171 render_text->MoveCursor(CHARACTER_BREAK, CURSOR_RIGHT, false); 1172 render_text->MoveCursor(WORD_BREAK, CURSOR_RIGHT, false); 1173 EXPECT_EQ(end, render_text->selection_model()); 1174 } 1175 } 1176 1177 // Test moving by word from right to left. 1178 render_text->MoveCursor(LINE_BREAK, CURSOR_RIGHT, false); 1179 first_word = true; 1180 while (true) { 1181 SelectionModel start = render_text->selection_model(); 1182 render_text->MoveCursor(WORD_BREAK, CURSOR_LEFT, false); 1183 SelectionModel end = render_text->selection_model(); 1184 if (end == start) // reach the end. 1185 break; 1186 1187 int num_of_character_moves = first_word ? 3 : 4; 1188 first_word = false; 1189 render_text->MoveCursorTo(start); 1190 for (int j = 0; j < num_of_character_moves; ++j) 1191 render_text->MoveCursor(CHARACTER_BREAK, CURSOR_LEFT, false); 1192 EXPECT_EQ(end, render_text->selection_model()); 1193 1194 for (int j = 1; j < num_of_character_moves; ++j) { 1195 render_text->MoveCursorTo(start); 1196 for (int k = 0; k < j; ++k) 1197 render_text->MoveCursor(CHARACTER_BREAK, CURSOR_LEFT, false); 1198 render_text->MoveCursor(WORD_BREAK, CURSOR_LEFT, false); 1199 EXPECT_EQ(end, render_text->selection_model()); 1200 } 1201 } 1202 } 1203 1204 TEST_F(RenderTextTest, MoveLeftRightByWordInBidiText) { 1205 scoped_ptr<RenderText> render_text(RenderText::CreateInstance()); 1206 1207 // For testing simplicity, each word is a 3-character word. 1208 std::vector<const wchar_t*> test; 1209 test.push_back(L"abc"); 1210 test.push_back(L"abc def"); 1211 test.push_back(L"\x05E1\x05E2\x05E3"); 1212 test.push_back(L"\x05E1\x05E2\x05E3 \x05E4\x05E5\x05E6"); 1213 test.push_back(L"abc \x05E1\x05E2\x05E3"); 1214 test.push_back(L"abc def \x05E1\x05E2\x05E3 \x05E4\x05E5\x05E6"); 1215 test.push_back(L"abc def hij \x05E1\x05E2\x05E3 \x05E4\x05E5\x05E6" 1216 L" \x05E7\x05E8\x05E9"); 1217 1218 test.push_back(L"abc \x05E1\x05E2\x05E3 hij"); 1219 test.push_back(L"abc def \x05E1\x05E2\x05E3 \x05E4\x05E5\x05E6 hij opq"); 1220 test.push_back(L"abc def hij \x05E1\x05E2\x05E3 \x05E4\x05E5\x05E6" 1221 L" \x05E7\x05E8\x05E9" L" opq rst uvw"); 1222 1223 test.push_back(L"\x05E1\x05E2\x05E3 abc"); 1224 test.push_back(L"\x05E1\x05E2\x05E3 \x05E4\x05E5\x05E6 abc def"); 1225 test.push_back(L"\x05E1\x05E2\x05E3 \x05E4\x05E5\x05E6 \x05E7\x05E8\x05E9" 1226 L" abc def hij"); 1227 1228 test.push_back(L"\x05D1\x05D2\x05D3 abc \x05E1\x05E2\x05E3"); 1229 test.push_back(L"\x05D1\x05D2\x05D3 \x05D4\x05D5\x05D6 abc def" 1230 L" \x05E1\x05E2\x05E3 \x05E4\x05E5\x05E6"); 1231 test.push_back(L"\x05D1\x05D2\x05D3 \x05D4\x05D5\x05D6 \x05D7\x05D8\x05D9" 1232 L" abc def hij \x05E1\x05E2\x05E3 \x05E4\x05E5\x05E6" 1233 L" \x05E7\x05E8\x05E9"); 1234 1235 for (size_t i = 0; i < test.size(); ++i) 1236 MoveLeftRightByWordVerifier(render_text.get(), test[i]); 1237 } 1238 1239 TEST_F(RenderTextTest, MoveLeftRightByWordInBidiText_TestEndOfText) { 1240 scoped_ptr<RenderText> render_text(RenderText::CreateInstance()); 1241 1242 render_text->SetText(WideToUTF16(L"ab\x05E1")); 1243 // Moving the cursor by word from "abC|" to the left should return "|abC". 1244 // But since end of text is always treated as a word break, it returns 1245 // position "ab|C". 1246 // TODO(xji): Need to make it work as expected. 1247 render_text->MoveCursor(LINE_BREAK, CURSOR_RIGHT, false); 1248 render_text->MoveCursor(WORD_BREAK, CURSOR_LEFT, false); 1249 // EXPECT_EQ(SelectionModel(), render_text->selection_model()); 1250 1251 // Moving the cursor by word from "|abC" to the right returns "abC|". 1252 render_text->MoveCursor(LINE_BREAK, CURSOR_LEFT, false); 1253 render_text->MoveCursor(WORD_BREAK, CURSOR_RIGHT, false); 1254 EXPECT_EQ(SelectionModel(3, CURSOR_FORWARD), render_text->selection_model()); 1255 1256 render_text->SetText(WideToUTF16(L"\x05E1\x05E2" L"a")); 1257 // For logical text "BCa", moving the cursor by word from "aCB|" to the left 1258 // returns "|aCB". 1259 render_text->MoveCursor(LINE_BREAK, CURSOR_RIGHT, false); 1260 render_text->MoveCursor(WORD_BREAK, CURSOR_LEFT, false); 1261 EXPECT_EQ(SelectionModel(3, CURSOR_FORWARD), render_text->selection_model()); 1262 1263 // Moving the cursor by word from "|aCB" to the right should return "aCB|". 1264 // But since end of text is always treated as a word break, it returns 1265 // position "a|CB". 1266 // TODO(xji): Need to make it work as expected. 1267 render_text->MoveCursor(LINE_BREAK, CURSOR_LEFT, false); 1268 render_text->MoveCursor(WORD_BREAK, CURSOR_RIGHT, false); 1269 // EXPECT_EQ(SelectionModel(), render_text->selection_model()); 1270 } 1271 1272 TEST_F(RenderTextTest, MoveLeftRightByWordInTextWithMultiSpaces) { 1273 scoped_ptr<RenderText> render_text(RenderText::CreateInstance()); 1274 render_text->SetText(WideToUTF16(L"abc def")); 1275 render_text->MoveCursorTo(SelectionModel(5, CURSOR_FORWARD)); 1276 render_text->MoveCursor(WORD_BREAK, CURSOR_RIGHT, false); 1277 EXPECT_EQ(11U, render_text->cursor_position()); 1278 1279 render_text->MoveCursorTo(SelectionModel(5, CURSOR_FORWARD)); 1280 render_text->MoveCursor(WORD_BREAK, CURSOR_LEFT, false); 1281 EXPECT_EQ(0U, render_text->cursor_position()); 1282 } 1283 1284 TEST_F(RenderTextTest, MoveLeftRightByWordInChineseText) { 1285 scoped_ptr<RenderText> render_text(RenderText::CreateInstance()); 1286 render_text->SetText(WideToUTF16(L"\x6211\x4EEC\x53BB\x516C\x56ED\x73A9")); 1287 render_text->MoveCursor(LINE_BREAK, CURSOR_LEFT, false); 1288 EXPECT_EQ(0U, render_text->cursor_position()); 1289 render_text->MoveCursor(WORD_BREAK, CURSOR_RIGHT, false); 1290 EXPECT_EQ(2U, render_text->cursor_position()); 1291 render_text->MoveCursor(WORD_BREAK, CURSOR_RIGHT, false); 1292 EXPECT_EQ(3U, render_text->cursor_position()); 1293 render_text->MoveCursor(WORD_BREAK, CURSOR_RIGHT, false); 1294 EXPECT_EQ(5U, render_text->cursor_position()); 1295 render_text->MoveCursor(WORD_BREAK, CURSOR_RIGHT, false); 1296 EXPECT_EQ(6U, render_text->cursor_position()); 1297 render_text->MoveCursor(WORD_BREAK, CURSOR_RIGHT, false); 1298 EXPECT_EQ(6U, render_text->cursor_position()); 1299 } 1300 #endif 1301 1302 // TODO(ckocagil): Remove when RenderTextWin goes away. 1303 #if defined(OS_WIN) 1304 TEST_F(RenderTextTest, Win_LogicalClusters) { 1305 scoped_ptr<RenderTextWin> render_text( 1306 static_cast<RenderTextWin*>(RenderText::CreateNativeInstance())); 1307 1308 const base::string16 test_string = 1309 WideToUTF16(L"\x0930\x0930\x0930\x0930\x0930"); 1310 render_text->SetText(test_string); 1311 render_text->EnsureLayout(); 1312 ASSERT_EQ(1U, render_text->runs_.size()); 1313 WORD* logical_clusters = render_text->runs_[0]->logical_clusters.get(); 1314 for (size_t i = 0; i < test_string.length(); ++i) 1315 EXPECT_EQ(i, logical_clusters[i]); 1316 } 1317 #endif // defined(OS_WIN) 1318 1319 TEST_F(RenderTextTest, StringSizeSanity) { 1320 scoped_ptr<RenderText> render_text(RenderText::CreateInstance()); 1321 render_text->SetText(UTF8ToUTF16("Hello World")); 1322 const Size string_size = render_text->GetStringSize(); 1323 EXPECT_GT(string_size.width(), 0); 1324 EXPECT_GT(string_size.height(), 0); 1325 } 1326 1327 TEST_F(RenderTextTest, StringSizeLongStrings) { 1328 scoped_ptr<RenderText> render_text(RenderText::CreateInstance()); 1329 Size previous_string_size; 1330 for (size_t length = 10; length < 1000000; length *= 10) { 1331 render_text->SetText(base::string16(length, 'a')); 1332 const Size string_size = render_text->GetStringSize(); 1333 EXPECT_GT(string_size.width(), previous_string_size.width()); 1334 EXPECT_GT(string_size.height(), 0); 1335 previous_string_size = string_size; 1336 } 1337 } 1338 1339 // TODO(asvitkine): This test fails because PlatformFontMac uses point font 1340 // sizes instead of pixel sizes like other implementations. 1341 #if !defined(OS_MACOSX) 1342 TEST_F(RenderTextTest, StringSizeEmptyString) { 1343 // Ascent and descent of Arial and Symbol are different on most platforms. 1344 const FontList font_list("Arial,Symbol, 16px"); 1345 scoped_ptr<RenderText> render_text(RenderText::CreateInstance()); 1346 render_text->SetFontList(font_list); 1347 render_text->SetDisplayRect(Rect(0, 0, 0, font_list.GetHeight())); 1348 1349 // The empty string respects FontList metrics for non-zero height 1350 // and baseline. 1351 render_text->SetText(base::string16()); 1352 EXPECT_EQ(font_list.GetHeight(), render_text->GetStringSize().height()); 1353 EXPECT_EQ(0, render_text->GetStringSize().width()); 1354 EXPECT_EQ(font_list.GetBaseline(), render_text->GetBaseline()); 1355 1356 render_text->SetText(UTF8ToUTF16(" ")); 1357 EXPECT_EQ(font_list.GetHeight(), render_text->GetStringSize().height()); 1358 EXPECT_EQ(font_list.GetBaseline(), render_text->GetBaseline()); 1359 } 1360 #endif // !defined(OS_MACOSX) 1361 1362 TEST_F(RenderTextTest, StringSizeRespectsFontListMetrics) { 1363 // Check that Arial and Symbol have different font metrics. 1364 Font arial_font("Arial", 16); 1365 ASSERT_EQ("arial", 1366 base::StringToLowerASCII(arial_font.GetActualFontNameForTesting())); 1367 Font symbol_font("Symbol", 16); 1368 ASSERT_EQ("symbol", 1369 base::StringToLowerASCII( 1370 symbol_font.GetActualFontNameForTesting())); 1371 EXPECT_NE(arial_font.GetHeight(), symbol_font.GetHeight()); 1372 EXPECT_NE(arial_font.GetBaseline(), symbol_font.GetBaseline()); 1373 // "a" should be rendered with Arial, not with Symbol. 1374 const char* arial_font_text = "a"; 1375 // "" (registered trademark symbol) should be rendered with Symbol, 1376 // not with Arial. 1377 const char* symbol_font_text = "\xC2\xAE"; 1378 1379 Font smaller_font = arial_font; 1380 Font larger_font = symbol_font; 1381 const char* smaller_font_text = arial_font_text; 1382 const char* larger_font_text = symbol_font_text; 1383 if (symbol_font.GetHeight() < arial_font.GetHeight() && 1384 symbol_font.GetBaseline() < arial_font.GetBaseline()) { 1385 std::swap(smaller_font, larger_font); 1386 std::swap(smaller_font_text, larger_font_text); 1387 } 1388 ASSERT_LT(smaller_font.GetHeight(), larger_font.GetHeight()); 1389 ASSERT_LT(smaller_font.GetBaseline(), larger_font.GetBaseline()); 1390 1391 // Check |smaller_font_text| is rendered with the smaller font. 1392 scoped_ptr<RenderText> render_text(RenderText::CreateInstance()); 1393 render_text->SetText(UTF8ToUTF16(smaller_font_text)); 1394 render_text->SetFontList(FontList(smaller_font)); 1395 render_text->SetDisplayRect(Rect(0, 0, 0, 1396 render_text->font_list().GetHeight())); 1397 EXPECT_EQ(smaller_font.GetHeight(), render_text->GetStringSize().height()); 1398 EXPECT_EQ(smaller_font.GetBaseline(), render_text->GetBaseline()); 1399 1400 // Layout the same text with mixed fonts. The text should be rendered with 1401 // the smaller font, but the height and baseline are determined with the 1402 // metrics of the font list, which is equal to the larger font. 1403 std::vector<Font> fonts; 1404 fonts.push_back(smaller_font); // The primary font is the smaller font. 1405 fonts.push_back(larger_font); 1406 const FontList font_list(fonts); 1407 render_text->SetFontList(font_list); 1408 render_text->SetDisplayRect(Rect(0, 0, 0, 1409 render_text->font_list().GetHeight())); 1410 EXPECT_LT(smaller_font.GetHeight(), render_text->GetStringSize().height()); 1411 EXPECT_LT(smaller_font.GetBaseline(), render_text->GetBaseline()); 1412 EXPECT_EQ(font_list.GetHeight(), render_text->GetStringSize().height()); 1413 EXPECT_EQ(font_list.GetBaseline(), render_text->GetBaseline()); 1414 } 1415 1416 TEST_F(RenderTextTest, SetFontList) { 1417 scoped_ptr<RenderText> render_text(RenderText::CreateInstance()); 1418 render_text->SetFontList(FontList("Arial,Symbol, 13px")); 1419 const std::vector<Font>& fonts = render_text->font_list().GetFonts(); 1420 ASSERT_EQ(2U, fonts.size()); 1421 EXPECT_EQ("Arial", fonts[0].GetFontName()); 1422 EXPECT_EQ("Symbol", fonts[1].GetFontName()); 1423 EXPECT_EQ(13, render_text->font_list().GetFontSize()); 1424 } 1425 1426 TEST_F(RenderTextTest, StringSizeBoldWidth) { 1427 scoped_ptr<RenderText> render_text(RenderText::CreateInstance()); 1428 render_text->SetText(UTF8ToUTF16("Hello World")); 1429 1430 const int plain_width = render_text->GetStringSize().width(); 1431 EXPECT_GT(plain_width, 0); 1432 1433 // Apply a bold style and check that the new width is greater. 1434 render_text->SetStyle(BOLD, true); 1435 const int bold_width = render_text->GetStringSize().width(); 1436 EXPECT_GT(bold_width, plain_width); 1437 1438 // Now, apply a plain style over the first word only. 1439 render_text->ApplyStyle(BOLD, false, Range(0, 5)); 1440 const int plain_bold_width = render_text->GetStringSize().width(); 1441 EXPECT_GT(plain_bold_width, plain_width); 1442 EXPECT_LT(plain_bold_width, bold_width); 1443 } 1444 1445 TEST_F(RenderTextTest, StringSizeHeight) { 1446 base::string16 cases[] = { 1447 WideToUTF16(L"Hello World!"), // English 1448 WideToUTF16(L"\x6328\x62f6"), // Japanese 1449 WideToUTF16(L"\x0915\x093f"), // Hindi 1450 WideToUTF16(L"\x05e0\x05b8"), // Hebrew 1451 }; 1452 1453 const FontList default_font_list; 1454 const FontList& larger_font_list = default_font_list.DeriveWithSizeDelta(24); 1455 EXPECT_GT(larger_font_list.GetHeight(), default_font_list.GetHeight()); 1456 1457 for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); i++) { 1458 scoped_ptr<RenderText> render_text(RenderText::CreateInstance()); 1459 render_text->SetFontList(default_font_list); 1460 render_text->SetText(cases[i]); 1461 1462 const int height1 = render_text->GetStringSize().height(); 1463 EXPECT_GT(height1, 0); 1464 1465 // Check that setting the larger font increases the height. 1466 render_text->SetFontList(larger_font_list); 1467 const int height2 = render_text->GetStringSize().height(); 1468 EXPECT_GT(height2, height1); 1469 } 1470 } 1471 1472 TEST_F(RenderTextTest, GetBaselineSanity) { 1473 scoped_ptr<RenderText> render_text(RenderText::CreateInstance()); 1474 render_text->SetText(UTF8ToUTF16("Hello World")); 1475 const int baseline = render_text->GetBaseline(); 1476 EXPECT_GT(baseline, 0); 1477 } 1478 1479 TEST_F(RenderTextTest, CursorBoundsInReplacementMode) { 1480 scoped_ptr<RenderText> render_text(RenderText::CreateInstance()); 1481 render_text->SetText(ASCIIToUTF16("abcdefg")); 1482 render_text->SetDisplayRect(Rect(100, 17)); 1483 SelectionModel sel_b(1, CURSOR_FORWARD); 1484 SelectionModel sel_c(2, CURSOR_FORWARD); 1485 Rect cursor_around_b = render_text->GetCursorBounds(sel_b, false); 1486 Rect cursor_before_b = render_text->GetCursorBounds(sel_b, true); 1487 Rect cursor_before_c = render_text->GetCursorBounds(sel_c, true); 1488 EXPECT_EQ(cursor_around_b.x(), cursor_before_b.x()); 1489 EXPECT_EQ(cursor_around_b.right(), cursor_before_c.x()); 1490 } 1491 1492 TEST_F(RenderTextTest, GetTextOffset) { 1493 // The default horizontal text offset differs for LTR and RTL, and is only set 1494 // when the RenderText object is created. This test will check the default in 1495 // LTR mode, and the next test will check the RTL default. 1496 const bool was_rtl = base::i18n::IsRTL(); 1497 SetRTL(false); 1498 scoped_ptr<RenderText> render_text(RenderText::CreateInstance()); 1499 render_text->SetText(ASCIIToUTF16("abcdefg")); 1500 render_text->SetFontList(FontList("Arial, 13px")); 1501 1502 // Set display area's size equal to the font size. 1503 const Size font_size(render_text->GetContentWidth(), 1504 render_text->font_list().GetHeight()); 1505 Rect display_rect(font_size); 1506 render_text->SetDisplayRect(display_rect); 1507 1508 Vector2d offset = render_text->GetLineOffset(0); 1509 EXPECT_TRUE(offset.IsZero()); 1510 1511 const int kEnlargementX = 2; 1512 display_rect.Inset(0, 0, -kEnlargementX, 0); 1513 render_text->SetDisplayRect(display_rect); 1514 1515 // Check the default horizontal alignment. 1516 offset = render_text->GetLineOffset(0); 1517 EXPECT_EQ(0, offset.x()); 1518 1519 // Check explicitly setting the horizontal alignment. 1520 render_text->SetHorizontalAlignment(ALIGN_LEFT); 1521 offset = render_text->GetLineOffset(0); 1522 EXPECT_EQ(0, offset.x()); 1523 render_text->SetHorizontalAlignment(ALIGN_CENTER); 1524 offset = render_text->GetLineOffset(0); 1525 EXPECT_EQ(kEnlargementX / 2, offset.x()); 1526 render_text->SetHorizontalAlignment(ALIGN_RIGHT); 1527 offset = render_text->GetLineOffset(0); 1528 EXPECT_EQ(kEnlargementX, offset.x()); 1529 1530 // Check that text is vertically centered within taller display rects. 1531 const int kEnlargementY = display_rect.height(); 1532 display_rect.Inset(0, 0, 0, -kEnlargementY); 1533 render_text->SetDisplayRect(display_rect); 1534 const Vector2d prev_offset = render_text->GetLineOffset(0); 1535 display_rect.Inset(0, 0, 0, -2 * kEnlargementY); 1536 render_text->SetDisplayRect(display_rect); 1537 offset = render_text->GetLineOffset(0); 1538 EXPECT_EQ(prev_offset.y() + kEnlargementY, offset.y()); 1539 1540 SetRTL(was_rtl); 1541 } 1542 1543 TEST_F(RenderTextTest, GetTextOffsetHorizontalDefaultInRTL) { 1544 // This only checks the default horizontal alignment in RTL mode; all other 1545 // GetLineOffset(0) attributes are checked by the test above. 1546 const bool was_rtl = base::i18n::IsRTL(); 1547 SetRTL(true); 1548 scoped_ptr<RenderText> render_text(RenderText::CreateInstance()); 1549 render_text->SetText(ASCIIToUTF16("abcdefg")); 1550 render_text->SetFontList(FontList("Arial, 13px")); 1551 const int kEnlargement = 2; 1552 const Size font_size(render_text->GetContentWidth() + kEnlargement, 1553 render_text->GetStringSize().height()); 1554 Rect display_rect(font_size); 1555 render_text->SetDisplayRect(display_rect); 1556 Vector2d offset = render_text->GetLineOffset(0); 1557 EXPECT_EQ(kEnlargement, offset.x()); 1558 SetRTL(was_rtl); 1559 } 1560 1561 TEST_F(RenderTextTest, SetDisplayOffset) { 1562 scoped_ptr<RenderText> render_text(RenderText::CreateInstance()); 1563 render_text->SetText(ASCIIToUTF16("abcdefg")); 1564 render_text->SetFontList(FontList("Arial, 13px")); 1565 1566 const Size font_size(render_text->GetContentWidth(), 1567 render_text->font_list().GetHeight()); 1568 const int kEnlargement = 10; 1569 1570 // Set display width |kEnlargement| pixels greater than content width and test 1571 // different possible situations. In this case the only possible display 1572 // offset is zero. 1573 Rect display_rect(font_size); 1574 display_rect.Inset(0, 0, -kEnlargement, 0); 1575 render_text->SetDisplayRect(display_rect); 1576 1577 struct { 1578 HorizontalAlignment alignment; 1579 int offset; 1580 } small_content_cases[] = { 1581 { ALIGN_LEFT, -kEnlargement }, 1582 { ALIGN_LEFT, 0 }, 1583 { ALIGN_LEFT, kEnlargement }, 1584 { ALIGN_RIGHT, -kEnlargement }, 1585 { ALIGN_RIGHT, 0 }, 1586 { ALIGN_RIGHT, kEnlargement }, 1587 { ALIGN_CENTER, -kEnlargement }, 1588 { ALIGN_CENTER, 0 }, 1589 { ALIGN_CENTER, kEnlargement }, 1590 }; 1591 1592 for (size_t i = 0; i < ARRAYSIZE_UNSAFE(small_content_cases); i++) { 1593 render_text->SetHorizontalAlignment(small_content_cases[i].alignment); 1594 render_text->SetDisplayOffset(small_content_cases[i].offset); 1595 EXPECT_EQ(0, render_text->GetUpdatedDisplayOffset().x()); 1596 } 1597 1598 // Set display width |kEnlargement| pixels less than content width and test 1599 // different possible situations. 1600 display_rect = Rect(font_size); 1601 display_rect.Inset(0, 0, kEnlargement, 0); 1602 render_text->SetDisplayRect(display_rect); 1603 1604 struct { 1605 HorizontalAlignment alignment; 1606 int offset; 1607 int expected_offset; 1608 } large_content_cases[] = { 1609 // When text is left-aligned, display offset can be in range 1610 // [-kEnlargement, 0]. 1611 { ALIGN_LEFT, -2 * kEnlargement, -kEnlargement }, 1612 { ALIGN_LEFT, -kEnlargement / 2, -kEnlargement / 2 }, 1613 { ALIGN_LEFT, kEnlargement, 0 }, 1614 // When text is right-aligned, display offset can be in range 1615 // [0, kEnlargement]. 1616 { ALIGN_RIGHT, -kEnlargement, 0 }, 1617 { ALIGN_RIGHT, kEnlargement / 2, kEnlargement / 2 }, 1618 { ALIGN_RIGHT, 2 * kEnlargement, kEnlargement }, 1619 // When text is center-aligned, display offset can be in range 1620 // [-kEnlargement / 2 - 1, (kEnlargement - 1) / 2]. 1621 { ALIGN_CENTER, -kEnlargement, -kEnlargement / 2 - 1 }, 1622 { ALIGN_CENTER, -kEnlargement / 4, -kEnlargement / 4 }, 1623 { ALIGN_CENTER, kEnlargement / 4, kEnlargement / 4 }, 1624 { ALIGN_CENTER, kEnlargement, (kEnlargement - 1) / 2 }, 1625 }; 1626 1627 for (size_t i = 0; i < ARRAYSIZE_UNSAFE(large_content_cases); i++) { 1628 render_text->SetHorizontalAlignment(large_content_cases[i].alignment); 1629 render_text->SetDisplayOffset(large_content_cases[i].offset); 1630 EXPECT_EQ(large_content_cases[i].expected_offset, 1631 render_text->GetUpdatedDisplayOffset().x()); 1632 } 1633 } 1634 1635 TEST_F(RenderTextTest, SameFontForParentheses) { 1636 struct { 1637 const base::char16 left_char; 1638 const base::char16 right_char; 1639 } punctuation_pairs[] = { 1640 { '(', ')' }, 1641 { '{', '}' }, 1642 { '<', '>' }, 1643 }; 1644 struct { 1645 base::string16 text; 1646 } cases[] = { 1647 // English(English) 1648 { WideToUTF16(L"Hello World(a)") }, 1649 // English(English)English 1650 { WideToUTF16(L"Hello World(a)Hello World") }, 1651 1652 // Japanese(English) 1653 { WideToUTF16(L"\x6328\x62f6(a)") }, 1654 // Japanese(English)Japanese 1655 { WideToUTF16(L"\x6328\x62f6(a)\x6328\x62f6") }, 1656 // English(Japanese)English 1657 { WideToUTF16(L"Hello World(\x6328\x62f6)Hello World") }, 1658 1659 // Hindi(English) 1660 { WideToUTF16(L"\x0915\x093f(a)") }, 1661 // Hindi(English)Hindi 1662 { WideToUTF16(L"\x0915\x093f(a)\x0915\x093f") }, 1663 // English(Hindi)English 1664 { WideToUTF16(L"Hello World(\x0915\x093f)Hello World") }, 1665 1666 // Hebrew(English) 1667 { WideToUTF16(L"\x05e0\x05b8(a)") }, 1668 // Hebrew(English)Hebrew 1669 { WideToUTF16(L"\x05e0\x05b8(a)\x05e0\x05b8") }, 1670 // English(Hebrew)English 1671 { WideToUTF16(L"Hello World(\x05e0\x05b8)Hello World") }, 1672 }; 1673 1674 scoped_ptr<RenderText> render_text(RenderText::CreateInstance()); 1675 for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); ++i) { 1676 base::string16 text = cases[i].text; 1677 const size_t start_paren_char_index = text.find('('); 1678 ASSERT_NE(base::string16::npos, start_paren_char_index); 1679 const size_t end_paren_char_index = text.find(')'); 1680 ASSERT_NE(base::string16::npos, end_paren_char_index); 1681 1682 for (size_t j = 0; j < ARRAYSIZE_UNSAFE(punctuation_pairs); ++j) { 1683 text[start_paren_char_index] = punctuation_pairs[j].left_char; 1684 text[end_paren_char_index] = punctuation_pairs[j].right_char; 1685 render_text->SetText(text); 1686 1687 const std::vector<RenderText::FontSpan> spans = 1688 render_text->GetFontSpansForTesting(); 1689 1690 int start_paren_span_index = -1; 1691 int end_paren_span_index = -1; 1692 for (size_t k = 0; k < spans.size(); ++k) { 1693 if (IndexInRange(spans[k].second, start_paren_char_index)) 1694 start_paren_span_index = k; 1695 if (IndexInRange(spans[k].second, end_paren_char_index)) 1696 end_paren_span_index = k; 1697 } 1698 ASSERT_NE(-1, start_paren_span_index); 1699 ASSERT_NE(-1, end_paren_span_index); 1700 1701 const Font& start_font = spans[start_paren_span_index].first; 1702 const Font& end_font = spans[end_paren_span_index].first; 1703 EXPECT_EQ(start_font.GetFontName(), end_font.GetFontName()); 1704 EXPECT_EQ(start_font.GetFontSize(), end_font.GetFontSize()); 1705 EXPECT_EQ(start_font.GetStyle(), end_font.GetStyle()); 1706 } 1707 } 1708 } 1709 1710 // Make sure the caret width is always >=1 so that the correct 1711 // caret is drawn at high DPI. crbug.com/164100. 1712 TEST_F(RenderTextTest, CaretWidth) { 1713 scoped_ptr<RenderText> render_text(RenderText::CreateInstance()); 1714 render_text->SetText(ASCIIToUTF16("abcdefg")); 1715 EXPECT_GE(render_text->GetUpdatedCursorBounds().width(), 1); 1716 } 1717 1718 TEST_F(RenderTextTest, SelectWord) { 1719 scoped_ptr<RenderText> render_text(RenderText::CreateInstance()); 1720 render_text->SetText(ASCIIToUTF16(" foo a.bc.d bar")); 1721 1722 struct { 1723 size_t cursor; 1724 size_t selection_start; 1725 size_t selection_end; 1726 } cases[] = { 1727 { 0, 0, 1 }, 1728 { 1, 1, 4 }, 1729 { 2, 1, 4 }, 1730 { 3, 1, 4 }, 1731 { 4, 4, 6 }, 1732 { 5, 4, 6 }, 1733 { 6, 6, 7 }, 1734 { 7, 7, 8 }, 1735 { 8, 8, 10 }, 1736 { 9, 8, 10 }, 1737 { 10, 10, 11 }, 1738 { 11, 11, 12 }, 1739 { 12, 12, 13 }, 1740 { 13, 13, 16 }, 1741 { 14, 13, 16 }, 1742 { 15, 13, 16 }, 1743 { 16, 13, 16 }, 1744 }; 1745 1746 for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); ++i) { 1747 render_text->SetCursorPosition(cases[i].cursor); 1748 render_text->SelectWord(); 1749 EXPECT_EQ(Range(cases[i].selection_start, cases[i].selection_end), 1750 render_text->selection()); 1751 } 1752 } 1753 1754 // Make sure the last word is selected when the cursor is at text.length(). 1755 TEST_F(RenderTextTest, LastWordSelected) { 1756 const std::string kTestURL1 = "http://www.google.com"; 1757 const std::string kTestURL2 = "http://www.google.com/something/"; 1758 1759 scoped_ptr<RenderText> render_text(RenderText::CreateInstance()); 1760 1761 render_text->SetText(ASCIIToUTF16(kTestURL1)); 1762 render_text->SetCursorPosition(kTestURL1.length()); 1763 render_text->SelectWord(); 1764 EXPECT_EQ(ASCIIToUTF16("com"), GetSelectedText(render_text.get())); 1765 EXPECT_FALSE(render_text->selection().is_reversed()); 1766 1767 render_text->SetText(ASCIIToUTF16(kTestURL2)); 1768 render_text->SetCursorPosition(kTestURL2.length()); 1769 render_text->SelectWord(); 1770 EXPECT_EQ(ASCIIToUTF16("/"), GetSelectedText(render_text.get())); 1771 EXPECT_FALSE(render_text->selection().is_reversed()); 1772 } 1773 1774 // When given a non-empty selection, SelectWord should expand the selection to 1775 // nearest word boundaries. 1776 TEST_F(RenderTextTest, SelectMultipleWords) { 1777 const std::string kTestURL = "http://www.google.com"; 1778 1779 scoped_ptr<RenderText> render_text(RenderText::CreateInstance()); 1780 1781 render_text->SetText(ASCIIToUTF16(kTestURL)); 1782 render_text->SelectRange(Range(16, 20)); 1783 render_text->SelectWord(); 1784 EXPECT_EQ(ASCIIToUTF16("google.com"), GetSelectedText(render_text.get())); 1785 EXPECT_FALSE(render_text->selection().is_reversed()); 1786 1787 // SelectWord should preserve the selection direction. 1788 render_text->SelectRange(Range(20, 16)); 1789 render_text->SelectWord(); 1790 EXPECT_EQ(ASCIIToUTF16("google.com"), GetSelectedText(render_text.get())); 1791 EXPECT_TRUE(render_text->selection().is_reversed()); 1792 } 1793 1794 // TODO(asvitkine): Cursor movements tests disabled on Mac because RenderTextMac 1795 // does not implement this yet. http://crbug.com/131618 1796 #if !defined(OS_MACOSX) 1797 TEST_F(RenderTextTest, DisplayRectShowsCursorLTR) { 1798 ASSERT_FALSE(base::i18n::IsRTL()); 1799 ASSERT_FALSE(base::i18n::ICUIsRTL()); 1800 1801 scoped_ptr<RenderText> render_text(RenderText::CreateInstance()); 1802 render_text->SetText(WideToUTF16(L"abcdefghijklmnopqrstuvwxzyabcdefg")); 1803 render_text->MoveCursorTo(SelectionModel(render_text->text().length(), 1804 CURSOR_FORWARD)); 1805 int width = render_text->GetStringSize().width(); 1806 ASSERT_GT(width, 10); 1807 1808 // Ensure that the cursor is placed at the width of its preceding text. 1809 render_text->SetDisplayRect(Rect(width + 10, 1)); 1810 EXPECT_EQ(width, render_text->GetUpdatedCursorBounds().x()); 1811 1812 // Ensure that shrinking the display rectangle keeps the cursor in view. 1813 render_text->SetDisplayRect(Rect(width - 10, 1)); 1814 EXPECT_EQ(render_text->display_rect().width(), 1815 render_text->GetUpdatedCursorBounds().right()); 1816 1817 // Ensure that the text will pan to fill its expanding display rectangle. 1818 render_text->SetDisplayRect(Rect(width - 5, 1)); 1819 EXPECT_EQ(render_text->display_rect().width(), 1820 render_text->GetUpdatedCursorBounds().right()); 1821 1822 // Ensure that a sufficiently large display rectangle shows all the text. 1823 render_text->SetDisplayRect(Rect(width + 10, 1)); 1824 EXPECT_EQ(width, render_text->GetUpdatedCursorBounds().x()); 1825 1826 // Repeat the test with RTL text. 1827 render_text->SetText(WideToUTF16(L"\x5d0\x5d1\x5d2\x5d3\x5d4\x5d5\x5d6\x5d7" 1828 L"\x5d8\x5d9\x5da\x5db\x5dc\x5dd\x5de\x5df")); 1829 render_text->MoveCursorTo(SelectionModel(0, CURSOR_FORWARD)); 1830 width = render_text->GetStringSize().width(); 1831 ASSERT_GT(width, 10); 1832 1833 // Ensure that the cursor is placed at the width of its preceding text. 1834 render_text->SetDisplayRect(Rect(width + 10, 1)); 1835 EXPECT_EQ(width, render_text->GetUpdatedCursorBounds().x()); 1836 1837 // Ensure that shrinking the display rectangle keeps the cursor in view. 1838 render_text->SetDisplayRect(Rect(width - 10, 1)); 1839 EXPECT_EQ(render_text->display_rect().width(), 1840 render_text->GetUpdatedCursorBounds().right()); 1841 1842 // Ensure that the text will pan to fill its expanding display rectangle. 1843 render_text->SetDisplayRect(Rect(width - 5, 1)); 1844 EXPECT_EQ(render_text->display_rect().width(), 1845 render_text->GetUpdatedCursorBounds().right()); 1846 1847 // Ensure that a sufficiently large display rectangle shows all the text. 1848 render_text->SetDisplayRect(Rect(width + 10, 1)); 1849 EXPECT_EQ(width, render_text->GetUpdatedCursorBounds().x()); 1850 } 1851 1852 TEST_F(RenderTextTest, DisplayRectShowsCursorRTL) { 1853 // Set the application default text direction to RTL. 1854 const bool was_rtl = base::i18n::IsRTL(); 1855 SetRTL(true); 1856 1857 scoped_ptr<RenderText> render_text(RenderText::CreateInstance()); 1858 render_text->SetText(WideToUTF16(L"abcdefghijklmnopqrstuvwxzyabcdefg")); 1859 render_text->MoveCursorTo(SelectionModel(0, CURSOR_FORWARD)); 1860 int width = render_text->GetStringSize().width(); 1861 ASSERT_GT(width, 10); 1862 1863 // Ensure that the cursor is placed at the width of its preceding text. 1864 render_text->SetDisplayRect(Rect(width + 10, 1)); 1865 EXPECT_EQ(render_text->display_rect().width() - width - 1, 1866 render_text->GetUpdatedCursorBounds().x()); 1867 1868 // Ensure that shrinking the display rectangle keeps the cursor in view. 1869 render_text->SetDisplayRect(Rect(width - 10, 1)); 1870 EXPECT_EQ(0, render_text->GetUpdatedCursorBounds().x()); 1871 1872 // Ensure that the text will pan to fill its expanding display rectangle. 1873 render_text->SetDisplayRect(Rect(width - 5, 1)); 1874 EXPECT_EQ(0, render_text->GetUpdatedCursorBounds().x()); 1875 1876 // Ensure that a sufficiently large display rectangle shows all the text. 1877 render_text->SetDisplayRect(Rect(width + 10, 1)); 1878 EXPECT_EQ(render_text->display_rect().width() - width - 1, 1879 render_text->GetUpdatedCursorBounds().x()); 1880 1881 // Repeat the test with RTL text. 1882 render_text->SetText(WideToUTF16(L"\x5d0\x5d1\x5d2\x5d3\x5d4\x5d5\x5d6\x5d7" 1883 L"\x5d8\x5d9\x5da\x5db\x5dc\x5dd\x5de\x5df")); 1884 render_text->MoveCursorTo(SelectionModel(render_text->text().length(), 1885 CURSOR_FORWARD)); 1886 width = render_text->GetStringSize().width(); 1887 ASSERT_GT(width, 10); 1888 1889 // Ensure that the cursor is placed at the width of its preceding text. 1890 render_text->SetDisplayRect(Rect(width + 10, 1)); 1891 EXPECT_EQ(render_text->display_rect().width() - width - 1, 1892 render_text->GetUpdatedCursorBounds().x()); 1893 1894 // Ensure that shrinking the display rectangle keeps the cursor in view. 1895 render_text->SetDisplayRect(Rect(width - 10, 1)); 1896 EXPECT_EQ(0, render_text->GetUpdatedCursorBounds().x()); 1897 1898 // Ensure that the text will pan to fill its expanding display rectangle. 1899 render_text->SetDisplayRect(Rect(width - 5, 1)); 1900 EXPECT_EQ(0, render_text->GetUpdatedCursorBounds().x()); 1901 1902 // Ensure that a sufficiently large display rectangle shows all the text. 1903 render_text->SetDisplayRect(Rect(width + 10, 1)); 1904 EXPECT_EQ(render_text->display_rect().width() - width - 1, 1905 render_text->GetUpdatedCursorBounds().x()); 1906 1907 // Reset the application default text direction to LTR. 1908 SetRTL(was_rtl); 1909 EXPECT_EQ(was_rtl, base::i18n::IsRTL()); 1910 } 1911 #endif // !defined(OS_MACOSX) 1912 1913 // Changing colors between or inside ligated glyphs should not break shaping. 1914 TEST_F(RenderTextTest, SelectionKeepsLigatures) { 1915 const wchar_t* kTestStrings[] = { L"\x644\x623", L"\x633\x627" }; 1916 scoped_ptr<RenderText> render_text(RenderText::CreateInstance()); 1917 render_text->set_selection_color(SK_ColorRED); 1918 Canvas canvas; 1919 1920 for (size_t i = 0; i < arraysize(kTestStrings); ++i) { 1921 render_text->SetText(WideToUTF16(kTestStrings[i])); 1922 const int expected_width = render_text->GetStringSize().width(); 1923 render_text->MoveCursorTo(SelectionModel(Range(0, 1), CURSOR_FORWARD)); 1924 EXPECT_EQ(expected_width, render_text->GetStringSize().width()); 1925 // Drawing the text should not DCHECK or crash; see http://crbug.com/262119 1926 render_text->Draw(&canvas); 1927 render_text->MoveCursorTo(SelectionModel(0, CURSOR_FORWARD)); 1928 } 1929 } 1930 1931 #if defined(OS_WIN) 1932 // TODO(ckocagil): Enable for RenderTextHarfBuzz after implementing multiline. 1933 // Ensure strings wrap onto multiple lines for a small available width. 1934 TEST_F(RenderTextTest, Multiline_MinWidth) { 1935 const wchar_t* kTestStrings[] = { kWeak, kLtr, kLtrRtl, kLtrRtlLtr, kRtl, 1936 kRtlLtr, kRtlLtrRtl }; 1937 1938 scoped_ptr<RenderTextWin> render_text( 1939 static_cast<RenderTextWin*>(RenderText::CreateNativeInstance())); 1940 render_text->SetDisplayRect(Rect(1, 1000)); 1941 render_text->SetMultiline(true); 1942 Canvas canvas; 1943 1944 for (size_t i = 0; i < arraysize(kTestStrings); ++i) { 1945 SCOPED_TRACE(base::StringPrintf("kTestStrings[%" PRIuS "]", i)); 1946 render_text->SetText(WideToUTF16(kTestStrings[i])); 1947 render_text->Draw(&canvas); 1948 EXPECT_GT(render_text->lines_.size(), 1U); 1949 } 1950 } 1951 1952 // TODO(ckocagil): Enable for RenderTextHarfBuzz after implementing multiline. 1953 // Ensure strings wrap onto multiple lines for a normal available width. 1954 TEST_F(RenderTextTest, Multiline_NormalWidth) { 1955 const struct { 1956 const wchar_t* const text; 1957 const Range first_line_char_range; 1958 const Range second_line_char_range; 1959 } kTestStrings[] = { 1960 { L"abc defg hijkl", Range(0, 9), Range(9, 14) }, 1961 { L"qwertyzxcvbn", Range(0, 8), Range(8, 12) }, 1962 { L"\x062A\x0641\x0627\x062D\x05EA\x05E4\x05D5\x05D6\x05D9\x05DD", 1963 Range(4, 10), Range(0, 4) } 1964 }; 1965 1966 scoped_ptr<RenderTextWin> render_text( 1967 static_cast<RenderTextWin*>(RenderText::CreateNativeInstance())); 1968 render_text->SetDisplayRect(Rect(50, 1000)); 1969 render_text->SetMultiline(true); 1970 Canvas canvas; 1971 1972 for (size_t i = 0; i < ARRAYSIZE_UNSAFE(kTestStrings); ++i) { 1973 SCOPED_TRACE(base::StringPrintf("kTestStrings[%" PRIuS "]", i)); 1974 render_text->SetText(WideToUTF16(kTestStrings[i].text)); 1975 render_text->Draw(&canvas); 1976 ASSERT_EQ(2U, render_text->lines_.size()); 1977 ASSERT_EQ(1U, render_text->lines_[0].segments.size()); 1978 EXPECT_EQ(kTestStrings[i].first_line_char_range, 1979 render_text->lines_[0].segments[0].char_range); 1980 ASSERT_EQ(1U, render_text->lines_[1].segments.size()); 1981 EXPECT_EQ(kTestStrings[i].second_line_char_range, 1982 render_text->lines_[1].segments[0].char_range); 1983 } 1984 } 1985 1986 // TODO(ckocagil): Enable for RenderTextHarfBuzz after implementing multiline. 1987 // Ensure strings don't wrap onto multiple lines for a sufficient available 1988 // width. 1989 TEST_F(RenderTextTest, Multiline_SufficientWidth) { 1990 const wchar_t* kTestStrings[] = { L"", L" ", L".", L" . ", L"abc", L"a b c", 1991 L"\x62E\x628\x632", L"\x62E \x628 \x632" }; 1992 1993 scoped_ptr<RenderTextWin> render_text( 1994 static_cast<RenderTextWin*>(RenderText::CreateNativeInstance())); 1995 render_text->SetDisplayRect(Rect(30, 1000)); 1996 render_text->SetMultiline(true); 1997 Canvas canvas; 1998 1999 for (size_t i = 0; i < arraysize(kTestStrings); ++i) { 2000 SCOPED_TRACE(base::StringPrintf("kTestStrings[%" PRIuS "]", i)); 2001 render_text->SetText(WideToUTF16(kTestStrings[i])); 2002 render_text->Draw(&canvas); 2003 EXPECT_EQ(1U, render_text->lines_.size()); 2004 } 2005 } 2006 2007 // TODO(ckocagil): Enable for RenderTextHarfBuzz after implementing multiline. 2008 TEST_F(RenderTextTest, Multiline_Newline) { 2009 const struct { 2010 const wchar_t* const text; 2011 // Ranges of the characters on each line preceding the newline. 2012 const Range first_line_char_range; 2013 const Range second_line_char_range; 2014 } kTestStrings[] = { 2015 { L"abc\ndef", Range(0, 3), Range(4, 7) }, 2016 { L"a \n b ", Range(0, 2), Range(3, 6) }, 2017 { L"\n" , Range::InvalidRange(), Range::InvalidRange() } 2018 }; 2019 2020 scoped_ptr<RenderTextWin> render_text( 2021 static_cast<RenderTextWin*>(RenderText::CreateNativeInstance())); 2022 render_text->SetDisplayRect(Rect(200, 1000)); 2023 render_text->SetMultiline(true); 2024 Canvas canvas; 2025 2026 for (size_t i = 0; i < ARRAYSIZE_UNSAFE(kTestStrings); ++i) { 2027 SCOPED_TRACE(base::StringPrintf("kTestStrings[%" PRIuS "]", i)); 2028 render_text->SetText(WideToUTF16(kTestStrings[i].text)); 2029 render_text->Draw(&canvas); 2030 2031 ASSERT_EQ(2U, render_text->lines_.size()); 2032 2033 const Range first_expected_range = kTestStrings[i].first_line_char_range; 2034 ASSERT_EQ(first_expected_range.IsValid() ? 2U : 1U, 2035 render_text->lines_[0].segments.size()); 2036 if (first_expected_range.IsValid()) 2037 EXPECT_EQ(first_expected_range, 2038 render_text->lines_[0].segments[0].char_range); 2039 2040 const internal::LineSegment& newline_segment = 2041 render_text->lines_[0].segments[first_expected_range.IsValid() ? 1 : 0]; 2042 ASSERT_EQ(1U, newline_segment.char_range.length()); 2043 EXPECT_EQ(L'\n', kTestStrings[i].text[newline_segment.char_range.start()]); 2044 2045 const Range second_expected_range = kTestStrings[i].second_line_char_range; 2046 ASSERT_EQ(second_expected_range.IsValid() ? 1U : 0U, 2047 render_text->lines_[1].segments.size()); 2048 if (second_expected_range.IsValid()) 2049 EXPECT_EQ(second_expected_range, 2050 render_text->lines_[1].segments[0].char_range); 2051 } 2052 } 2053 2054 // TODO(ckocagil): Remove when RenderTextWin goes away. 2055 TEST_F(RenderTextTest, BreakRunsByUnicodeBlocks) { 2056 scoped_ptr<RenderTextWin> render_text( 2057 static_cast<RenderTextWin*>(RenderText::CreateNativeInstance())); 2058 2059 // The '\x25B6' "play character" should break runs. http://crbug.com/278913 2060 render_text->SetText(WideToUTF16(L"x\x25B6y")); 2061 render_text->EnsureLayout(); 2062 ASSERT_EQ(3U, render_text->runs_.size()); 2063 EXPECT_EQ(Range(0, 1), render_text->runs_[0]->range); 2064 EXPECT_EQ(Range(1, 2), render_text->runs_[1]->range); 2065 EXPECT_EQ(Range(2, 3), render_text->runs_[2]->range); 2066 2067 render_text->SetText(WideToUTF16(L"x \x25B6 y")); 2068 render_text->EnsureLayout(); 2069 ASSERT_EQ(3U, render_text->runs_.size()); 2070 EXPECT_EQ(Range(0, 2), render_text->runs_[0]->range); 2071 EXPECT_EQ(Range(2, 3), render_text->runs_[1]->range); 2072 EXPECT_EQ(Range(3, 5), render_text->runs_[2]->range); 2073 } 2074 #endif // defined(OS_WIN) 2075 2076 // Test TextRunHarfBuzz's cluster finding logic. 2077 TEST_F(RenderTextTest, HarfBuzz_Clusters) { 2078 struct { 2079 uint32 glyph_to_char[4]; 2080 Range chars[4]; 2081 Range glyphs[4]; 2082 bool is_rtl; 2083 } cases[] = { 2084 { // From string "A B C D" to glyphs "a b c d". 2085 { 0, 1, 2, 3 }, 2086 { Range(0, 1), Range(1, 2), Range(2, 3), Range(3, 4) }, 2087 { Range(0, 1), Range(1, 2), Range(2, 3), Range(3, 4) }, 2088 false 2089 }, 2090 { // From string "A B C D" to glyphs "d c b a". 2091 { 3, 2, 1, 0 }, 2092 { Range(0, 1), Range(1, 2), Range(2, 3), Range(3, 4) }, 2093 { Range(3, 4), Range(2, 3), Range(1, 2), Range(0, 1) }, 2094 true 2095 }, 2096 { // From string "A B C D" to glyphs "ab c c d". 2097 { 0, 2, 2, 3 }, 2098 { Range(0, 2), Range(0, 2), Range(2, 3), Range(3, 4) }, 2099 { Range(0, 1), Range(0, 1), Range(1, 3), Range(3, 4) }, 2100 false 2101 }, 2102 { // From string "A B C D" to glyphs "d c c ba". 2103 { 3, 2, 2, 0 }, 2104 { Range(0, 2), Range(0, 2), Range(2, 3), Range(3, 4) }, 2105 { Range(3, 4), Range(3, 4), Range(1, 3), Range(0, 1) }, 2106 true 2107 }, 2108 }; 2109 2110 internal::TextRunHarfBuzz run; 2111 run.range = Range(0, 4); 2112 run.glyph_count = 4; 2113 run.glyph_to_char.resize(4); 2114 2115 for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); ++i) { 2116 std::copy(cases[i].glyph_to_char, cases[i].glyph_to_char + 4, 2117 run.glyph_to_char.begin()); 2118 run.is_rtl = cases[i].is_rtl; 2119 2120 for (size_t j = 0; j < 4; ++j) { 2121 SCOPED_TRACE(base::StringPrintf("Case %" PRIuS ", char %" PRIuS, i, j)); 2122 Range chars; 2123 Range glyphs; 2124 run.GetClusterAt(j, &chars, &glyphs); 2125 EXPECT_EQ(cases[i].chars[j], chars); 2126 EXPECT_EQ(cases[i].glyphs[j], glyphs); 2127 EXPECT_EQ(cases[i].glyphs[j], run.CharRangeToGlyphRange(chars)); 2128 } 2129 } 2130 } 2131 2132 // Ensure that graphemes with multiple code points do not get split. 2133 TEST_F(RenderTextTest, HarfBuzz_SubglyphGraphemeCases) { 2134 const wchar_t* cases[] = { 2135 // "A" with a combining umlaut, followed by a "B". 2136 L"A\x0308" L"B", 2137 // Devanagari biconsonantal conjunct "ki", followed by an "a". 2138 L"\x0915\x093f\x0905", 2139 // Thai consonant and vowel pair "cho chan" + "sara am", followed by Thai 2140 // digit 0. 2141 L"\x0e08\x0e33\x0E50", 2142 }; 2143 2144 RenderTextHarfBuzz render_text; 2145 2146 for (size_t i = 0; i < arraysize(cases); ++i) { 2147 SCOPED_TRACE(base::StringPrintf("Case %" PRIuS, i)); 2148 2149 base::string16 text = WideToUTF16(cases[i]); 2150 render_text.SetText(text); 2151 render_text.EnsureLayout(); 2152 ASSERT_EQ(1U, render_text.runs_.size()); 2153 internal::TextRunHarfBuzz* run = render_text.runs_[0]; 2154 2155 base::i18n::BreakIterator* iter = render_text.grapheme_iterator_.get(); 2156 Range first_grapheme_bounds = run->GetGraphemeBounds(iter, 0); 2157 EXPECT_EQ(first_grapheme_bounds, run->GetGraphemeBounds(iter, 1)); 2158 Range second_grapheme_bounds = run->GetGraphemeBounds(iter, 2); 2159 EXPECT_EQ(first_grapheme_bounds.end(), second_grapheme_bounds.start()); 2160 } 2161 } 2162 2163 // Test the partition of a multi-grapheme cluster into grapheme ranges. 2164 TEST_F(RenderTextTest, HarfBuzz_SubglyphGraphemePartition) { 2165 struct { 2166 uint32 glyph_to_char[2]; 2167 Range bounds[4]; 2168 bool is_rtl; 2169 } cases[] = { 2170 { // From string "A B C D" to glyphs "a bcd". 2171 { 0, 1 }, 2172 { Range(0, 10), Range(10, 13), Range(13, 17), Range(17, 20) }, 2173 false 2174 }, 2175 { // From string "A B C D" to glyphs "ab cd". 2176 { 0, 2 }, 2177 { Range(0, 5), Range(5, 10), Range(10, 15), Range(15, 20) }, 2178 false 2179 }, 2180 { // From string "A B C D" to glyphs "dcb a". 2181 { 1, 0 }, 2182 { Range(10, 20), Range(7, 10), Range(3, 7), Range(0, 3) }, 2183 true 2184 }, 2185 { // From string "A B C D" to glyphs "dc ba". 2186 { 2, 0 }, 2187 { Range(15, 20), Range(10, 15), Range(5, 10), Range(0, 5) }, 2188 true 2189 }, 2190 }; 2191 2192 internal::TextRunHarfBuzz run; 2193 run.range = Range(0, 4); 2194 run.glyph_count = 2; 2195 run.glyph_to_char.resize(2); 2196 run.positions.reset(new SkPoint[4]); 2197 run.width = 20; 2198 2199 const base::string16 kString = ASCIIToUTF16("abcd"); 2200 scoped_ptr<base::i18n::BreakIterator> iter(new base::i18n::BreakIterator( 2201 kString, base::i18n::BreakIterator::BREAK_CHARACTER)); 2202 ASSERT_TRUE(iter->Init()); 2203 2204 for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); ++i) { 2205 std::copy(cases[i].glyph_to_char, cases[i].glyph_to_char + 2, 2206 run.glyph_to_char.begin()); 2207 run.is_rtl = cases[i].is_rtl; 2208 for (int j = 0; j < 2; ++j) 2209 run.positions[j].set(j * 10, 0); 2210 2211 for (size_t j = 0; j < 4; ++j) { 2212 SCOPED_TRACE(base::StringPrintf("Case %" PRIuS ", char %" PRIuS, i, j)); 2213 EXPECT_EQ(cases[i].bounds[j], run.GetGraphemeBounds(iter.get(), j)); 2214 } 2215 } 2216 } 2217 2218 TEST_F(RenderTextTest, HarfBuzz_RunDirection) { 2219 RenderTextHarfBuzz render_text; 2220 const base::string16 mixed = 2221 WideToUTF16(L"\x05D0\x05D1" L"1234" L"\x05D2\x05D3"); 2222 render_text.SetText(mixed); 2223 render_text.EnsureLayout(); 2224 ASSERT_EQ(3U, render_text.runs_.size()); 2225 EXPECT_TRUE(render_text.runs_[0]->is_rtl); 2226 EXPECT_FALSE(render_text.runs_[1]->is_rtl); 2227 EXPECT_TRUE(render_text.runs_[2]->is_rtl); 2228 } 2229 2230 TEST_F(RenderTextTest, HarfBuzz_BreakRunsByUnicodeBlocks) { 2231 RenderTextHarfBuzz render_text; 2232 2233 // The '\x25B6' "play character" should break runs. http://crbug.com/278913 2234 render_text.SetText(WideToUTF16(L"x\x25B6y")); 2235 render_text.EnsureLayout(); 2236 ASSERT_EQ(3U, render_text.runs_.size()); 2237 EXPECT_EQ(Range(0, 1), render_text.runs_[0]->range); 2238 EXPECT_EQ(Range(1, 2), render_text.runs_[1]->range); 2239 EXPECT_EQ(Range(2, 3), render_text.runs_[2]->range); 2240 2241 render_text.SetText(WideToUTF16(L"x \x25B6 y")); 2242 render_text.EnsureLayout(); 2243 ASSERT_EQ(3U, render_text.runs_.size()); 2244 EXPECT_EQ(Range(0, 2), render_text.runs_[0]->range); 2245 EXPECT_EQ(Range(2, 3), render_text.runs_[1]->range); 2246 EXPECT_EQ(Range(3, 5), render_text.runs_[2]->range); 2247 } 2248 2249 // Disabled on Mac because RenderTextMac doesn't implement GetGlyphBounds. 2250 #if !defined(OS_MACOSX) 2251 TEST_F(RenderTextTest, GlyphBounds) { 2252 const wchar_t* kTestStrings[] = { 2253 L"asdf 1234 qwer", L"\x0647\x0654", L"\x0645\x0631\x062D\x0628\x0627" 2254 }; 2255 scoped_ptr<RenderText> render_text(RenderText::CreateInstance()); 2256 2257 for (size_t i = 0; i < arraysize(kTestStrings); ++i) { 2258 render_text->SetText(WideToUTF16(kTestStrings[i])); 2259 render_text->EnsureLayout(); 2260 2261 for (size_t j = 0; j < render_text->text().length(); ++j) 2262 EXPECT_FALSE(render_text->GetGlyphBounds(j).is_empty()); 2263 } 2264 } 2265 #endif 2266 2267 // Remove this after making RTHB default in favor of RenderTextTest.GlyphBounds. 2268 TEST_F(RenderTextTest, HarfBuzz_GlyphBounds) { 2269 const wchar_t* kTestStrings[] = { 2270 L"asdf 1234 qwer", L"\x0647\x0654", L"\x0645\x0631\x062D\x0628\x0627" 2271 }; 2272 scoped_ptr<RenderText> render_text(new RenderTextHarfBuzz); 2273 2274 for (size_t i = 0; i < arraysize(kTestStrings); ++i) { 2275 render_text->SetText(WideToUTF16(kTestStrings[i])); 2276 render_text->EnsureLayout(); 2277 2278 for (size_t j = 0; j < render_text->text().length(); ++j) 2279 EXPECT_FALSE(render_text->GetGlyphBounds(j).is_empty()); 2280 } 2281 } 2282 2283 // Ensure that shaping with a non-existent font does not cause a crash. 2284 TEST_F(RenderTextTest, HarfBuzz_NonExistentFont) { 2285 RenderTextHarfBuzz render_text; 2286 render_text.SetText(ASCIIToUTF16("test")); 2287 render_text.EnsureLayout(); 2288 ASSERT_EQ(1U, render_text.runs_.size()); 2289 internal::TextRunHarfBuzz* run = render_text.runs_[0]; 2290 render_text.ShapeRunWithFont(run, "TheFontThatDoesntExist"); 2291 } 2292 2293 // Ensure an empty run returns sane values to queries. 2294 TEST_F(RenderTextTest, HarfBuzz_EmptyRun) { 2295 internal::TextRunHarfBuzz run; 2296 const base::string16 kString = ASCIIToUTF16("abcdefgh"); 2297 scoped_ptr<base::i18n::BreakIterator> iter(new base::i18n::BreakIterator( 2298 kString, base::i18n::BreakIterator::BREAK_CHARACTER)); 2299 ASSERT_TRUE(iter->Init()); 2300 2301 run.range = Range(3, 8); 2302 run.glyph_count = 0; 2303 EXPECT_EQ(Range(0, 0), run.CharRangeToGlyphRange(Range(4, 5))); 2304 EXPECT_EQ(Range(0, 0), run.GetGraphemeBounds(iter.get(), 4)); 2305 Range chars; 2306 Range glyphs; 2307 run.GetClusterAt(4, &chars, &glyphs); 2308 EXPECT_EQ(Range(3, 8), chars); 2309 EXPECT_EQ(Range(0, 0), glyphs); 2310 } 2311 2312 } // namespace gfx 2313
