| /* |
| * Copyright 2022 Rive |
| */ |
| |
| #include <rive/simple_array.hpp> |
| #include <catch.hpp> |
| #include <rive/text.hpp> |
| #include <rive/text/font_hb.hpp> |
| #include "utils/rive_utf.hpp" |
| |
| using namespace rive; |
| |
| static rive::TextRun append(std::vector<rive::Unichar>* unichars, |
| rive::rcp<rive::Font> font, |
| float size, |
| const char text[]) |
| { |
| const uint8_t* ptr = (const uint8_t*)text; |
| uint32_t n = 0; |
| while (*ptr) |
| { |
| unichars->push_back(rive::UTF::NextUTF8(&ptr)); |
| n += 1; |
| } |
| return {std::move(font), size, n, 0}; |
| } |
| |
| static rcp<Font> loadFont(const char* filename) |
| { |
| FILE* fp = fopen("../../test/assets/RobotoFlex.ttf", "rb"); |
| REQUIRE(fp != nullptr); |
| |
| fseek(fp, 0, SEEK_END); |
| const size_t length = ftell(fp); |
| fseek(fp, 0, SEEK_SET); |
| std::vector<uint8_t> bytes(length); |
| REQUIRE(fread(bytes.data(), 1, length, fp) == length); |
| fclose(fp); |
| |
| return HBFont::Decode(bytes); |
| } |
| |
| TEST_CASE("line breaker separates words", "[line break]") |
| { |
| auto font = loadFont("../../test/assets/RobotoFlex.ttf"); |
| REQUIRE(font != nullptr); |
| |
| // one two⏎ three |
| std::vector<rive::TextRun> truns; |
| std::vector<rive::Unichar> unichars; |
| truns.push_back(append(&unichars, font, 32.0f, "one two three")); |
| |
| auto paragraphs = font->shapeText(unichars, truns); |
| REQUIRE(paragraphs.size() == 1); |
| const auto& paragraph = paragraphs.front(); |
| REQUIRE(paragraph.runs.size() == 1); |
| const auto& run = paragraph.runs.front(); |
| REQUIRE(run.breaks.size() == 6); |
| REQUIRE(run.breaks[0] == 0); |
| REQUIRE(run.breaks[1] == 3); |
| REQUIRE(run.breaks[2] == 4); |
| REQUIRE(run.breaks[3] == 7); |
| REQUIRE(run.breaks[4] == 8); |
| REQUIRE(run.breaks[5] == 13); |
| } |
| |
| TEST_CASE("line breaker handles multiple runs", "[line break]") |
| { |
| auto font = loadFont("../../test/assets/RobotoFlex.ttf"); |
| REQUIRE(font != nullptr); |
| |
| std::vector<rive::TextRun> truns; |
| std::vector<rive::Unichar> unichars; |
| truns.push_back(append(&unichars, font, 32.0f, "one two thr")); |
| truns.push_back(append(&unichars, font, 60.0f, "ee four")); |
| |
| auto paragraphs = font->shapeText(unichars, truns); |
| REQUIRE(paragraphs.size() == 1); |
| const auto& paragraph = paragraphs.front(); |
| |
| REQUIRE(paragraph.runs.size() == 2); |
| { |
| const auto& run = paragraph.runs.front(); |
| REQUIRE(run.breaks.size() == 5); |
| REQUIRE(run.breaks[0] == 0); |
| REQUIRE(run.breaks[1] == 3); |
| REQUIRE(run.breaks[2] == 4); |
| REQUIRE(run.breaks[3] == 7); |
| REQUIRE(run.breaks[4] == 8); |
| } |
| { |
| const auto& run = paragraph.runs.back(); |
| REQUIRE(run.breaks.size() == 3); |
| REQUIRE(run.breaks[0] == 2); |
| REQUIRE(run.breaks[1] == 3); |
| REQUIRE(run.breaks[2] == 7); |
| } |
| } |
| |
| TEST_CASE("line breaker handles returns", "[line break]") |
| { |
| auto font = loadFont("../../test/assets/RobotoFlex.ttf"); |
| REQUIRE(font != nullptr); |
| |
| std::vector<rive::TextRun> truns; |
| std::vector<rive::Unichar> unichars; |
| truns.push_back(append(&unichars, font, 32.0f, "one two thr")); |
| truns.push_back(append(&unichars, font, 60.0f, "ee\u2028 four")); |
| |
| auto paragraphs = font->shapeText(unichars, truns); |
| const auto& paragraph = paragraphs.front(); |
| REQUIRE(paragraph.runs.size() == 2); |
| { |
| const auto& run = paragraph.runs.front(); |
| REQUIRE(run.breaks.size() == 5); |
| REQUIRE(run.breaks[0] == 0); |
| REQUIRE(run.breaks[1] == 3); |
| REQUIRE(run.breaks[2] == 4); |
| REQUIRE(run.breaks[3] == 7); |
| REQUIRE(run.breaks[4] == 8); |
| } |
| { |
| const auto& run = paragraph.runs.back(); |
| REQUIRE(run.breaks.size() == 5); |
| REQUIRE(run.breaks[0] == 2); |
| REQUIRE(run.breaks[1] == 2); |
| REQUIRE(run.breaks[2] == 2); |
| REQUIRE(run.breaks[3] == 4); |
| REQUIRE(run.breaks[4] == 8); |
| } |
| } |
| |
| TEST_CASE("line breaker builds lines", "[line break]") |
| { |
| auto font = loadFont("../../test/assets/RobotoFlex.ttf"); |
| REQUIRE(font != nullptr); |
| |
| // one two⏎ three |
| std::vector<rive::TextRun> truns; |
| std::vector<rive::Unichar> unichars; |
| truns.push_back(append(&unichars, font, 32.0f, "one two three")); |
| |
| auto paragraphs = font->shapeText(unichars, truns); |
| REQUIRE(paragraphs.size() == 1); |
| const auto& paragraph = paragraphs.front(); |
| REQUIRE(paragraph.runs.size() == 1); |
| |
| // at 194 everything fits in one line |
| { |
| auto lines = GlyphLine::BreakLines(paragraph.runs, 194.0f); |
| REQUIRE(lines.size() == 1); |
| auto line = lines.back(); |
| REQUIRE(line.startRunIndex == 0); |
| REQUIRE(line.startGlyphIndex == 0); |
| REQUIRE(line.endRunIndex == 0); |
| REQUIRE(line.endGlyphIndex == 13); |
| } |
| // at 191 "three" should pop to second line |
| { |
| auto lines = GlyphLine::BreakLines(paragraph.runs, 191.0f); |
| REQUIRE(lines.size() == 2); |
| { |
| auto line = lines.front(); |
| REQUIRE(line.startRunIndex == 0); |
| REQUIRE(line.startGlyphIndex == 0); |
| REQUIRE(line.endRunIndex == 0); |
| REQUIRE(line.endGlyphIndex == 7); |
| } |
| |
| { |
| auto line = lines.back(); |
| REQUIRE(line.startRunIndex == 0); |
| REQUIRE(line.startGlyphIndex == 8); |
| REQUIRE(line.endRunIndex == 0); |
| REQUIRE(line.endGlyphIndex == 13); |
| } |
| } |
| } |
| |
| TEST_CASE("line breaker deals with extremes", "[line break]") |
| { |
| auto font = loadFont("../../test/assets/RobotoFlex.ttf"); |
| REQUIRE(font != nullptr); |
| |
| // one two⏎ three |
| std::vector<rive::TextRun> truns; |
| std::vector<rive::Unichar> unichars; |
| truns.push_back(append(&unichars, font, 32.0f, "ab")); |
| |
| auto paragraphs = font->shapeText(unichars, truns); |
| REQUIRE(paragraphs.size() == 1); |
| const auto& paragraph = paragraphs.front(); |
| REQUIRE(paragraph.runs.size() == 1); |
| |
| { |
| auto lines = GlyphLine::BreakLines(paragraph.runs, 17.0f); |
| REQUIRE(lines.size() == 2); |
| { |
| auto line = lines.front(); |
| REQUIRE(line.startRunIndex == 0); |
| REQUIRE(line.startGlyphIndex == 0); |
| REQUIRE(line.endRunIndex == 0); |
| REQUIRE(line.endGlyphIndex == 1); |
| } |
| |
| { |
| auto line = lines.back(); |
| REQUIRE(line.startRunIndex == 0); |
| REQUIRE(line.startGlyphIndex == 1); |
| REQUIRE(line.endRunIndex == 0); |
| REQUIRE(line.endGlyphIndex == 2); |
| } |
| } |
| // Test that it also handles 0 width. |
| { |
| auto lines = GlyphLine::BreakLines(paragraph.runs, 0.0f); |
| REQUIRE(lines.size() == 2); |
| { |
| auto line = lines.front(); |
| REQUIRE(line.startRunIndex == 0); |
| REQUIRE(line.startGlyphIndex == 0); |
| REQUIRE(line.endRunIndex == 0); |
| REQUIRE(line.endGlyphIndex == 1); |
| } |
| |
| { |
| auto line = lines.back(); |
| REQUIRE(line.startRunIndex == 0); |
| REQUIRE(line.startGlyphIndex == 1); |
| REQUIRE(line.endRunIndex == 0); |
| REQUIRE(line.endGlyphIndex == 2); |
| } |
| } |
| } |
| |
| TEST_CASE("line breaker breaks return characters", "[line break]") |
| { |
| auto font = loadFont("../../test/assets/RobotoFlex.ttf"); |
| REQUIRE(font != nullptr); |
| |
| // one two⏎ three |
| std::vector<rive::TextRun> truns; |
| std::vector<rive::Unichar> unichars; |
| truns.push_back(append(&unichars, font, 32.0f, "hello look\u2028here")); |
| |
| auto paragraphs = font->shapeText(unichars, truns); |
| REQUIRE(paragraphs.size() == 1); |
| const auto& paragraph = paragraphs.front(); |
| REQUIRE(paragraph.runs.size() == 1); |
| { |
| auto lines = GlyphLine::BreakLines(paragraph.runs, 300.0f); |
| REQUIRE(lines.size() == 2); |
| } |
| } |
| |
| TEST_CASE("shaper separates paragraphs", "[shaper]") |
| { |
| auto font = loadFont("../../test/assets/RobotoFlex.ttf"); |
| REQUIRE(font != nullptr); |
| |
| // one two⏎ three |
| std::vector<rive::TextRun> truns; |
| std::vector<rive::Unichar> unichars; |
| truns.push_back(append(&unichars, font, 32.0f, "hello look\u2028here\nsecond paragraph")); |
| |
| auto paragraphs = font->shapeText(unichars, truns); |
| REQUIRE(paragraphs.size() == 2); |
| { |
| const auto& paragraph = paragraphs.front(); |
| REQUIRE(paragraph.runs.size() == 1); |
| REQUIRE(paragraph.baseDirection == rive::TextDirection::ltr); |
| |
| auto lines = GlyphLine::BreakLines(paragraph.runs, 300.0f); |
| REQUIRE(lines.size() == 2); |
| } |
| { |
| const auto& paragraph = paragraphs.back(); |
| REQUIRE(paragraph.runs.size() == 1); |
| REQUIRE(paragraph.baseDirection == rive::TextDirection::ltr); |
| |
| auto lines = GlyphLine::BreakLines(paragraph.runs, 300.0f); |
| REQUIRE(lines.size() == 1); |
| } |
| } |
| |
| TEST_CASE("shaper handles RTL", "[shaper]") |
| { |
| auto font = loadFont("../../test/assets/IBMPlexSansArabic-Regular.ttf"); |
| REQUIRE(font != nullptr); |
| |
| // one two⏎ three |
| std::vector<rive::TextRun> truns; |
| std::vector<rive::Unichar> unichars; |
| truns.push_back(append(&unichars, font, 32.0f, "لمفاتيح ABC DEF")); |
| |
| auto paragraphs = font->shapeText(unichars, truns); |
| REQUIRE(paragraphs.size() == 1); |
| const auto& paragraph = paragraphs.front(); |
| REQUIRE(paragraph.baseDirection == rive::TextDirection::rtl); |
| { |
| auto lines = GlyphLine::BreakLines(paragraph.runs, 300.0f); |
| REQUIRE(lines.size() == 1); |
| } |
| { |
| auto lines = GlyphLine::BreakLines(paragraph.runs, 196.0f); |
| REQUIRE(lines.size() == 2); |
| |
| // The second line should start with DEF as it's the first word to wrap. |
| const auto& line = lines.back(); |
| const auto& run = paragraph.runs[line.startRunIndex]; |
| auto index = run.textIndices[line.startGlyphIndex]; |
| REQUIRE(unichars[index] == 'D'); |
| REQUIRE(unichars[index + 1] == 'E'); |
| REQUIRE(unichars[index + 2] == 'F'); |
| } |
| } |
| |
| TEST_CASE("shaper handles empty space", "[shaper]") |
| { |
| auto font = loadFont("../../test/assets/IBMPlexSansArabic-Regular.ttf"); |
| REQUIRE(font != nullptr); |
| |
| std::vector<rive::TextRun> truns; |
| std::vector<rive::Unichar> unichars; |
| truns.push_back(append(&unichars, font, 32.0f, " ")); |
| |
| auto paragraphs = font->shapeText(unichars, truns); |
| REQUIRE(paragraphs.size() == 1); |
| const auto& paragraph = paragraphs.front(); |
| REQUIRE(paragraph.baseDirection == rive::TextDirection::ltr); |
| { |
| auto lines = GlyphLine::BreakLines(paragraph.runs, 300.0f); |
| REQUIRE(lines.size() == 1); |
| } |
| } |