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f44be39f5e
0562a5dcc Support SVG files with invalid size #117 5732df547 Refactor parsePath git-subtree-dir: external/lunasvg git-subtree-split: 0562a5dcc8c25e59c060ee73d6d4d538f172d642
128 lines
3.9 KiB
C++
128 lines
3.9 KiB
C++
#include "svgelement.h"
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#include "parser.h"
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#include "layoutcontext.h"
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namespace lunasvg {
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SVGElement::SVGElement()
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: GraphicsElement(ElementID::Svg)
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{
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}
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Length SVGElement::x() const
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{
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auto& value = get(PropertyID::X);
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return Parser::parseLength(value, AllowNegativeLengths, Length::Zero);
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}
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Length SVGElement::y() const
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{
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auto& value = get(PropertyID::Y);
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return Parser::parseLength(value, AllowNegativeLengths, Length::Zero);
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}
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Length SVGElement::width() const
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{
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auto& value = get(PropertyID::Width);
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return Parser::parseLength(value, ForbidNegativeLengths, Length::HundredPercent);
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}
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Length SVGElement::height() const
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{
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auto& value = get(PropertyID::Height);
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return Parser::parseLength(value, ForbidNegativeLengths, Length::HundredPercent);
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}
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Rect SVGElement::viewBox() const
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{
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auto& value = get(PropertyID::ViewBox);
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return Parser::parseViewBox(value);
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}
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PreserveAspectRatio SVGElement::preserveAspectRatio() const
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{
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auto& value = get(PropertyID::PreserveAspectRatio);
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return Parser::parsePreserveAspectRatio(value);
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}
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std::unique_ptr<LayoutSymbol> SVGElement::build(const TreeBuilder* builder) const
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{
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if(isDisplayNone())
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return nullptr;
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auto w = this->width();
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auto h = this->height();
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if(w.isZero() || h.isZero())
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return nullptr;
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LengthContext lengthContext(this);
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auto _x = lengthContext.valueForLength(x(), LengthMode::Width);
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auto _y = lengthContext.valueForLength(y(), LengthMode::Height);
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auto _w = lengthContext.valueForLength(w, LengthMode::Width);
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auto _h = lengthContext.valueForLength(h, LengthMode::Height);
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auto viewBox = this->viewBox();
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auto preserveAspectRatio = this->preserveAspectRatio();
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auto viewTranslation = Transform::translated(_x, _y);
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auto viewTransform = preserveAspectRatio.getMatrix(_w, _h, viewBox);
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auto root = std::make_unique<LayoutSymbol>();
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root->width = _w;
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root->height = _h;
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root->transform = (viewTransform * viewTranslation) * transform();
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root->clip = isOverflowHidden() ? preserveAspectRatio.getClip(_w, _h, viewBox) : Rect::Invalid;
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root->opacity = opacity();
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LayoutContext context(builder, root.get());
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root->masker = context.getMasker(mask());
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root->clipper = context.getClipper(clip_path());
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layoutChildren(&context, root.get());
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if((w.isRelative() || h.isRelative()) && !has(PropertyID::ViewBox)) {
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auto box = root->map(root->strokeBoundingBox());
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root->width = w.value(box.x + box.w);
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root->height = h.value(box.y + box.h);
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}
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return root;
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}
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void SVGElement::layout(LayoutContext* context, LayoutContainer* current) const
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{
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if(isDisplayNone())
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return;
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auto w = this->width();
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auto h = this->height();
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if(w.isZero() || h.isZero())
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return;
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LengthContext lengthContext(this);
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auto _x = lengthContext.valueForLength(x(), LengthMode::Width);
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auto _y = lengthContext.valueForLength(y(), LengthMode::Height);
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auto _w = lengthContext.valueForLength(w, LengthMode::Width);
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auto _h = lengthContext.valueForLength(h, LengthMode::Height);
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auto viewBox = this->viewBox();
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auto preserveAspectRatio = this->preserveAspectRatio();
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auto viewTranslation = Transform::translated(_x, _y);
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auto viewTransform = preserveAspectRatio.getMatrix(_w, _h, viewBox);
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auto symbol = std::make_unique<LayoutSymbol>();
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symbol->width = _w;
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symbol->height = _h;
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symbol->transform = (viewTransform * viewTranslation) * transform();
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symbol->clip = isOverflowHidden() ? preserveAspectRatio.getClip(_w, _h, viewBox) : Rect::Invalid;
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symbol->opacity = opacity();
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symbol->masker = context->getMasker(mask());
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symbol->clipper = context->getClipper(clip_path());
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layoutChildren(context, symbol.get());
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current->addChildIfNotEmpty(std::move(symbol));
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}
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std::unique_ptr<Node> SVGElement::clone() const
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{
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return cloneElement<SVGElement>();
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}
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} // namespace lunasvg
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