mirror of
https://github.com/RGBCube/serenity
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c93d367d95
Previously, all SVG <text> elements were zero-sized boxes, that were only actually positioned and sized during painting. This led to a number of problems, the most visible of which being that text could not be scaled based on the viewBox. Which this patch, <text> elements get a correctly sized layout box, that can be hit-tested and respects the SVG viewBox. To share code with SVGGeometryElement's the PathData (from the prior commit) has been split into a computed path and computed transforms. The computed path is specific to geometry elements, but the computed transforms are shared between all SVG graphics elements.
60 lines
1.8 KiB
C++
60 lines
1.8 KiB
C++
/*
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* Copyright (c) 2022, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2023, Aliaksandr Kalenik <kalenik.aliaksandr@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/Utf16View.h>
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#include <LibJS/Runtime/Completion.h>
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#include <LibJS/Runtime/Utf16String.h>
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#include <LibWeb/CSS/Parser/Parser.h>
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#include <LibWeb/DOM/Document.h>
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#include <LibWeb/Layout/SVGTextBox.h>
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#include <LibWeb/SVG/AttributeNames.h>
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#include <LibWeb/SVG/AttributeParser.h>
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#include <LibWeb/SVG/SVGGeometryElement.h>
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#include <LibWeb/SVG/SVGTextContentElement.h>
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namespace Web::SVG {
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SVGTextContentElement::SVGTextContentElement(DOM::Document& document, DOM::QualifiedName qualified_name)
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: SVGGraphicsElement(document, move(qualified_name))
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{
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}
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void SVGTextContentElement::initialize(JS::Realm& realm)
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{
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Base::initialize(realm);
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set_prototype(&Bindings::ensure_web_prototype<Bindings::SVGTextContentElementPrototype>(realm, "SVGTextContentElement"));
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}
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Optional<TextAnchor> SVGTextContentElement::text_anchor() const
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{
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if (!layout_node())
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return {};
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switch (layout_node()->computed_values().text_anchor()) {
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case CSS::TextAnchor::Start:
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return TextAnchor::Start;
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case CSS::TextAnchor::Middle:
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return TextAnchor::Middle;
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case CSS::TextAnchor::End:
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return TextAnchor::End;
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default:
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VERIFY_NOT_REACHED();
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}
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}
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DeprecatedString SVGTextContentElement::text_contents() const
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{
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return child_text_content().trim_whitespace();
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}
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// https://svgwg.org/svg2-draft/text.html#__svg__SVGTextContentElement__getNumberOfChars
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WebIDL::ExceptionOr<int> SVGTextContentElement::get_number_of_chars() const
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{
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auto chars = TRY_OR_THROW_OOM(vm(), utf8_to_utf16(text_contents()));
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return static_cast<int>(chars.size());
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}
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}
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