mirror of
https://github.com/RGBCube/serenity
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108 lines
3.6 KiB
C++
108 lines
3.6 KiB
C++
/*
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* Copyright (c) 2020, Matthew Olsson <matthewcolsson@gmail.com>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <LibGfx/Painter.h>
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#include <LibWeb/CSS/StyleResolver.h>
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#include <LibWeb/DOM/Document.h>
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#include <LibWeb/DOM/Event.h>
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#include <LibWeb/Layout/LayoutSVG.h>
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#include <LibWeb/SVG/SVGPathElement.h>
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#include <LibWeb/SVG/SVGSVGElement.h>
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#include <ctype.h>
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namespace Web::SVG {
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static constexpr auto max_svg_area = 16384 * 16384;
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SVGSVGElement::SVGSVGElement(DOM::Document& document, const FlyString& tag_name)
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: SVGGraphicsElement(document, tag_name)
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{
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}
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RefPtr<LayoutNode> SVGSVGElement::create_layout_node(const CSS::StyleProperties* parent_style)
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{
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auto style = document().style_resolver().resolve_style(*this, parent_style);
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if (style->display() == CSS::Display::None)
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return nullptr;
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return adopt(*new LayoutSVG(document(), *this, move(style)));
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}
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static Gfx::IntSize bitmap_size_for_canvas(const SVGSVGElement& canvas)
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{
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auto width = canvas.width();
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auto height = canvas.height();
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Checked<size_t> area = width;
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area *= height;
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if (area.has_overflow()) {
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dbg() << "Refusing to create " << width << "x" << height << " svg (overflow)";
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return {};
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}
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if (area.value() > max_svg_area) {
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dbg() << "Refusing to create " << width << "x" << height << " svg (exceeds maximum size)";
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return {};
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}
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return Gfx::IntSize(width, height);
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}
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bool SVGSVGElement::create_bitmap_as_top_level_svg_element()
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{
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auto size = bitmap_size_for_canvas(*this);
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if (size.is_empty()) {
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m_bitmap = nullptr;
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return false;
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}
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if (!m_bitmap || m_bitmap->size() != size)
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m_bitmap = Gfx::Bitmap::create(Gfx::BitmapFormat::RGBA32, size);
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Gfx::Painter painter(*m_bitmap);
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paint(painter, make_painting_context_from(default_painting_context));
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return m_bitmap;
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}
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unsigned SVGSVGElement::width() const
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{
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return attribute(HTML::AttributeNames::width).to_uint().value_or(300);
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}
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unsigned SVGSVGElement::height() const
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{
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return attribute(HTML::AttributeNames::height).to_uint().value_or(150);
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}
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void SVGSVGElement::paint(Gfx::Painter& painter, const SVGPaintingContext& context)
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{
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for_each_child([&](Node& child) {
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if (is<SVGGraphicsElement>(child)) {
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downcast<SVGGraphicsElement>(child).paint(painter, make_painting_context_from(context));
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}
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});
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}
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}
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