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#include <mbgl/test/util.hpp>
#include <mbgl/text/bidi.hpp>
#include <mbgl/text/tagged_string.hpp>
#include <mbgl/text/shaping.hpp>
#include <mbgl/util/constants.hpp>
#include <vector>
using namespace mbgl;
using namespace util;
TEST(Shaping, ZWSP) {
Glyph glyph;
glyph.id = u'中';
glyph.metrics.width = 18;
glyph.metrics.height = 18;
glyph.metrics.left = 2;
glyph.metrics.top = -8;
glyph.metrics.advance = 21;
BiDi bidi;
auto immutableGlyph = Immutable<Glyph>(makeMutable<Glyph>(std::move(glyph)));
const std::vector<std::string> fontStack{{"font-stack"}};
const SectionOptions sectionOptions(1.0f, fontStack);
Glyphs glyphData;
glyphData.glyphs.emplace(u'中', std::move(immutableGlyph));
GlyphMap glyphs = {{FontStackHasher()(fontStack), std::move(glyphData)}};
const auto testGetShaping = [&](const TaggedString& string, unsigned maxWidthInChars) {
return getShaping(string,
maxWidthInChars * ONE_EM,
ONE_EM, // lineHeight
style::SymbolAnchorType::Center,
style::TextJustifyType::Center,
0, // spacing
{{0.0f, 0.0f}}, // translate
WritingModeType::Horizontal,
bidi,
glyphs,
/*allowVerticalPlacement*/ false);
};
// 3 lines
// 中中中中中中
// 中中中中中中
// 中中
{
TaggedString string(u"中中\u200b中中\u200b中中\u200b中中中中中中\u200b中中", sectionOptions);
auto shaping = testGetShaping(string, 5);
ASSERT_EQ(shaping.lineCount, 3);
ASSERT_EQ(shaping.top, -36);
ASSERT_EQ(shaping.bottom, 36);
ASSERT_EQ(shaping.left, -63);
ASSERT_EQ(shaping.right, 63);
ASSERT_EQ(shaping.writingMode, WritingModeType::Horizontal);
}
// 2 lines
// 中中
// 中
{
TaggedString string(u"中中\u200b中", sectionOptions);
auto shaping = testGetShaping(string, 1);
ASSERT_EQ(shaping.lineCount, 2);
ASSERT_EQ(shaping.top, -24);
ASSERT_EQ(shaping.bottom, 24);
ASSERT_EQ(shaping.left, -21);
ASSERT_EQ(shaping.right, 21);
ASSERT_EQ(shaping.writingMode, WritingModeType::Horizontal);
}
// 1 line
// 中中
{
TaggedString string(u"中中\u200b", sectionOptions);
auto shaping = testGetShaping(string, 2);
ASSERT_EQ(shaping.lineCount, 1);
ASSERT_EQ(shaping.top, -12);
ASSERT_EQ(shaping.bottom, 12);
ASSERT_EQ(shaping.left, -21);
ASSERT_EQ(shaping.right, 21);
ASSERT_EQ(shaping.writingMode, WritingModeType::Horizontal);
ASSERT_EQ(2, shaping.positionedGlyphs.size());
EXPECT_FLOAT_EQ(-21, shaping.positionedGlyphs[0].x);
EXPECT_FLOAT_EQ(-17, shaping.positionedGlyphs[0].y);
EXPECT_FLOAT_EQ(0, shaping.positionedGlyphs[1].x);
EXPECT_FLOAT_EQ(-17, shaping.positionedGlyphs[1].y);
}
// 5 'new' lines.
{
TaggedString string(u"\u200b\u200b\u200b\u200b\u200b", sectionOptions);
auto shaping = testGetShaping(string, 1);
ASSERT_EQ(shaping.lineCount, 5);
ASSERT_EQ(shaping.top, -60);
ASSERT_EQ(shaping.bottom, 60);
ASSERT_EQ(shaping.left, 0);
ASSERT_EQ(shaping.right, 0);
ASSERT_EQ(shaping.writingMode, WritingModeType::Horizontal);
}
}
TEST(Shaping, FontWithBaseline) {
Glyph glyph1;
glyph1.id = u'阳';
glyph1.metrics.width = 18;
glyph1.metrics.height = 19;
glyph1.metrics.left = 2;
glyph1.metrics.top = -8;
glyph1.metrics.advance = 21;
Glyph glyph2;
glyph2.id = u'光';
glyph2.metrics.width = 18;
glyph2.metrics.height = 18;
glyph2.metrics.left = 2;
glyph2.metrics.top = -8;
glyph2.metrics.advance = 21;
BiDi bidi;
std::vector<SectionOptions> sectionOptions;
const std::vector<std::string> fontStack1{{"font-stack1"}};
sectionOptions.emplace_back(1.0f, fontStack1);
Glyphs glyphData1;
glyphData1.glyphs.emplace(u'阳', Immutable<Glyph>(makeMutable<Glyph>(std::move(glyph1))));
glyphData1.ascender = 26;
glyphData1.descender = -6;
const std::vector<std::string> fontStack2{{"font-stack2"}};
sectionOptions.emplace_back(1.0f, fontStack2);
Glyphs glyphData2;
glyphData2.glyphs.emplace(u'光', Immutable<Glyph>(makeMutable<Glyph>(std::move(glyph2))));
glyphData2.ascender = 25;
glyphData2.descender = -5;
GlyphMap glyphs;
glyphs.emplace(FontStackHasher()(fontStack1), std::move(glyphData1));
glyphs.emplace(FontStackHasher()(fontStack2), std::move(glyphData2));
const auto testGetShaping = [&](const TaggedString& string, unsigned maxWidthInChars) {
return getShaping(string,
maxWidthInChars * ONE_EM,
ONE_EM, // lineHeight
style::SymbolAnchorType::Center,
style::TextJustifyType::Center,
0, // spacing
{{0.0f, 0.0f}}, // translate
WritingModeType::Horizontal,
bidi,
glyphs,
/*allowVerticalPlacement*/ false);
};
{
std::u16string text{u"阳光\u200b"};
StyledText styledText;
styledText.second = std::vector<uint8_t>{0, 1, 0};
styledText.first = std::move(text);
TaggedString string{styledText, sectionOptions};
auto shaping = testGetShaping(string, 5);
ASSERT_EQ(shaping.lineCount, 1);
ASSERT_EQ(shaping.top, -12);
ASSERT_EQ(shaping.bottom, 12);
ASSERT_EQ(shaping.left, -21);
ASSERT_EQ(shaping.right, 21);
ASSERT_EQ(shaping.writingMode, WritingModeType::Horizontal);
ASSERT_EQ(2, shaping.positionedGlyphs.size());
EXPECT_FLOAT_EQ(-21, shaping.positionedGlyphs[0].x);
EXPECT_FLOAT_EQ(-16, shaping.positionedGlyphs[0].y);
EXPECT_FLOAT_EQ(0, shaping.positionedGlyphs[1].x);
EXPECT_FLOAT_EQ(-15, shaping.positionedGlyphs[1].y);
}
}
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