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fix: multiline text draw is not limited to the render area

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MihailRis 2025-03-21 05:16:37 +03:00
parent 083d0d4d89
commit a8067ad9d6
1 changed files with 16 additions and 1 deletions
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17
src/graphics/ui/elements/Label.cpp
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@ -237,15 +237,30 @@ void Label::draw(const DrawContext& pctx, const Assets& assets) {
textYOffset = pos.y-calcPos().y;
totalLineHeight = lineHeight;
auto& viewport = pctx.getViewport();
glm::vec4 bounds {0, 0, viewport.getWidth(), viewport.getHeight()};
if (parent) {
auto ppos = parent->calcPos();
auto psize = parent->getSize();
bounds.x = std::max(bounds.x, ppos.x);
bounds.y = std::max(bounds.y, ppos.y);
bounds.z = std::min(bounds.z, ppos.x + psize.x);
bounds.w = std::min(bounds.w, ppos.y + psize.y);
}
if (multiline) {
// todo: reduce loop range to the actual area
for (size_t i = 0; i < cache.lines.size(); i++) {
float y = pos.y + i * totalLineHeight;
if (y + totalLineHeight < bounds.y || y > bounds.w) {
continue;
}
auto& line = cache.lines[i];
size_t offset = line.offset;
std::wstring_view view(text.c_str()+offset, text.length()-offset);
if (i < cache.lines.size()-1) {
view = std::wstring_view(text.c_str()+offset, cache.lines.at(i+1).offset-offset);
}
font->draw(*batch, view, pos.x, pos.y + i * totalLineHeight, styles.get(), offset);
font->draw(*batch, view, pos.x, y, styles.get(), offset);
}
} else {
font->draw(*batch, text, pos.x, pos.y, styles.get(), 0);