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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>
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);
GlyphMap glyphs = {
{ FontStackHasher()(fontStack), {{u'中', std::move(immutableGlyph)}} }
};
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);
};
// 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);
}
// 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);
}
}
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