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