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Codechange: Store both left and right glyph positions in a run.

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This also allows the end of a run to be known without using an extra position entry.
This commit is contained in:
Peter Nelson
2024-05-22 20:36:18 +01:00
committed by Peter Nelson
parent 80ddcb9d7d
commit 5cd81a980e
10 changed files with 68 additions and 61 deletions
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13
src/os/windows/string_uniscribe.cpp
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@@ -74,7 +74,7 @@ public:
class UniscribeVisualRun : public ParagraphLayouter::VisualRun {
private:
std::vector<GlyphID> glyphs;
std::vector<Point> positions;
std::vector<Position> positions;
std::vector<WORD> char_to_glyph;
int start_pos;
@@ -89,7 +89,7 @@ public:
UniscribeVisualRun(UniscribeVisualRun &&other) noexcept;
std::span<const GlyphID> GetGlyphs() const override { return this->glyphs; }
std::span<const Point> GetPositions() const override { return this->positions; }
std::span<const Position> GetPositions() const override { return this->positions; }
std::span<const int> GetGlyphToCharMap() const override;
const Font *GetFont() const override { return this->font; }
@@ -474,16 +474,15 @@ int UniscribeParagraphLayout::UniscribeLine::GetWidth() const
UniscribeParagraphLayout::UniscribeVisualRun::UniscribeVisualRun(const UniscribeRun &range, int x) : glyphs(range.ft_glyphs), char_to_glyph(range.char_to_glyph), start_pos(range.pos), total_advance(range.total_advance), font(range.font)
{
this->num_glyphs = (int)glyphs.size();
this->positions.reserve(this->num_glyphs + 1);
this->positions.reserve(this->num_glyphs);
int advance = x;
for (int i = 0; i < this->num_glyphs; i++) {
this->positions.emplace_back(range.offsets[i].du + advance, range.offsets[i].dv);
int x_advance = range.advances[i];
this->positions.emplace_back(range.offsets[i].du + advance - 1, range.offsets[i].du + advance + x_advance, range.offsets[i].dv);
advance += range.advances[i];
advance += x_advance;
}
/* End-of-run position. */
this->positions.emplace_back(advance, 0);
}
UniscribeParagraphLayout::UniscribeVisualRun::UniscribeVisualRun(UniscribeVisualRun&& other) noexcept