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LibHTML: Use ImageLoader for <img> elements to defer bitmap decoding

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We now wait until the pixels are actually needed before fully decoding
images in <img> elements.

This needs some more work and is currently a bit memory-wasteful since
we'll hang on to the raw image data forever.
This commit is contained in:
Andreas Kling 2019-10-15 21:53:08 +02:00
parent b4c0ea89d5
commit 18fa662eb2
3 changed files with 18 additions and 7 deletions
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6
Libraries/LibHTML/Layout/LayoutImage.cpp
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@ -37,6 +37,10 @@ void LayoutImage::render(RenderingContext& context)
if (!is_visible())
return;
// FIXME: This should be done at a different level. Also rect() does not include padding etc!
if (!context.viewport_rect().intersects(rect()))
return;
if (renders_as_alt_text()) {
context.painter().set_font(Font::default_font());
StylePainter::paint_frame(context.painter(), rect(), FrameShape::Container, FrameShadow::Sunken, 2);
@ -52,5 +56,5 @@ void LayoutImage::render(RenderingContext& context)
bool LayoutImage::renders_as_alt_text() const
{
return !node().bitmap();
return !node().image_loader();
}