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LibWeb: Generalize ImageBox and ImagePaintable for any ImageProvider

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They currently assume the DOM node is an HTMLImageElement with respect
to handling the alt attribute. The HTMLInputElement will require the
same behavior.
This commit is contained in:
Timothy Flynn
2024-02-18 20:10:37 -05:00
committed by Andreas Kling
parent c4295edc81
commit 45a47cb32b
10 changed files with 45 additions and 8 deletions
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11
Userland/Libraries/LibWeb/Layout/ImageBox.cpp
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@@ -8,6 +8,7 @@
#include <LibWeb/HTML/DecodedImageData.h>
#include <LibWeb/HTML/ImageRequest.h>
#include <LibWeb/Layout/ImageBox.h>
#include <LibWeb/Layout/ImageProvider.h>
#include <LibWeb/Painting/ImagePaintable.h>
#include <LibWeb/Platform/FontPlugin.h>
@@ -28,9 +29,9 @@ void ImageBox::prepare_for_replaced_layout()
set_natural_aspect_ratio(m_image_provider.intrinsic_aspect_ratio());
if (renders_as_alt_text()) {
auto& image_element = verify_cast<HTML::HTMLImageElement>(dom_node());
auto const& element = verify_cast<HTML::HTMLElement>(dom_node());
auto& font = Platform::FontPlugin::the().default_font();
auto alt = image_element.alt();
auto alt = element.get_attribute_value(HTML::AttributeNames::alt);
CSSPixels alt_text_width = 0;
if (!m_cached_alt_text_width.has_value())
@@ -46,15 +47,15 @@ void ImageBox::prepare_for_replaced_layout()
}
}
void ImageBox::dom_node_did_update_alt_text(Badge<HTML::HTMLImageElement>)
void ImageBox::dom_node_did_update_alt_text(Badge<ImageProvider>)
{
m_cached_alt_text_width = {};
}
bool ImageBox::renders_as_alt_text() const
{
if (is<HTML::HTMLImageElement>(dom_node()))
return !static_cast<HTML::HTMLImageElement const&>(dom_node()).current_request().is_available();
if (auto const* image_provider = dynamic_cast<ImageProvider const*>(&dom_node()))
return !image_provider->is_image_available();
return false;
}