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LibWeb: Move painting of background images to common location

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For now, painting of background color is kept separate. The ICB needs to
perform a "translate" call between painting the color and background,
whereas other divs must not make that call.
This commit is contained in:
Timothy Flynn 2021-04-04 18:04:38 -04:00 • committed by Andreas Kling
parent 1333fa7cf7
commit 735829f694
3 changed files with 32 additions and 43 deletions
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46
Userland/Libraries/LibWeb/Layout/Box.cpp
View file

@ -48,25 +48,9 @@ void Box::paint(PaintContext& context, PaintPhase phase)
if (phase == PaintPhase::Background && !is_body()) {
auto background_rect = enclosing_int_rect(padded_rect);
context.painter().fill_rect(background_rect, computed_values().background_color());
if (background_image() && background_image()->bitmap()) {
switch (computed_values().background_repeat()) {
case CSS::Repeat::Repeat:
// The background rect is already sized to align with 'repeat'.
break;
case CSS::Repeat::RepeatX:
background_rect.set_height(background_image()->bitmap()->height());
break;
case CSS::Repeat::RepeatY:
background_rect.set_width(background_image()->bitmap()->width());
break;
case CSS::Repeat::NoRepeat:
default: // FIXME: Support 'round' and 'square'
background_rect.set_width(background_image()->bitmap()->width());
background_rect.set_height(background_image()->bitmap()->height());
break;
}
context.painter().blit_tiled(background_rect, *background_image()->bitmap(), background_image()->bitmap()->rect());
if (background_image() && background_image()->bitmap()) {
paint_background_image(context, *background_image()->bitmap(), computed_values().background_repeat(), move(background_rect));
}
}
@ -100,6 +84,32 @@ void Box::paint(PaintContext& context, PaintPhase phase)
}
}
void Box::paint_background_image(
PaintContext& context,
const Gfx::Bitmap& background_image,
CSS::Repeat background_repeat,
Gfx::IntRect background_rect)
{
switch (background_repeat) {
case CSS::Repeat::Repeat:
// The background rect is already sized to align with 'repeat'.
break;
case CSS::Repeat::RepeatX:
background_rect.set_height(background_image.height());
break;
case CSS::Repeat::RepeatY:
background_rect.set_width(background_image.width());
break;
case CSS::Repeat::NoRepeat:
default: // FIXME: Support 'round' and 'square'
background_rect.set_width(background_image.width());
background_rect.set_height(background_image.height());
break;
}
context.painter().blit_tiled(background_rect, background_image, background_image.rect());
}
HitTestResult Box::hit_test(const Gfx::IntPoint& position, HitTestType type) const
{
// FIXME: It would be nice if we could confidently skip over hit testing

2
Userland/Libraries/LibWeb/Layout/Box.h
View file

@ -153,6 +153,8 @@ protected:
virtual void did_set_rect() { }
void paint_background_image(PaintContext&, const Gfx::Bitmap&, CSS::Repeat, Gfx::IntRect);
Vector<LineBox> m_line_boxes;
private:

27
Userland/Libraries/LibWeb/Layout/InitialContainingBlockBox.cpp
View file

@ -68,31 +68,8 @@ void InitialContainingBlockBox::paint_document_background(PaintContext& context)
context.painter().translate(-context.viewport_rect().location());
if (auto background_bitmap = document().background_image()) {
int painted_image_width = 0;
int painted_image_height = 0;
switch (document().background_repeat()) {
case CSS::Repeat::Repeat:
painted_image_width = context.viewport_rect().x() + context.viewport_rect().width();
painted_image_height = context.viewport_rect().y() + context.viewport_rect().height();
break;
case CSS::Repeat::RepeatX:
painted_image_width = context.viewport_rect().x() + context.viewport_rect().width();
painted_image_height = background_bitmap->rect().height();
break;
case CSS::Repeat::RepeatY:
painted_image_width = background_bitmap->rect().width();
painted_image_height = context.viewport_rect().y() + context.viewport_rect().height();
break;
case CSS::Repeat::NoRepeat:
default: // FIXME: Support 'round' and 'square'
painted_image_width = background_bitmap->rect().width();
painted_image_height = background_bitmap->rect().height();
break;
}
Gfx::IntRect background_rect { 0, 0, painted_image_width, painted_image_height };
context.painter().blit_tiled(background_rect, *background_bitmap, background_bitmap->rect());
Gfx::IntRect background_rect = { 0, 0, context.viewport_rect().x() + context.viewport_rect().width(), context.viewport_rect().y() + context.viewport_rect().height() };
paint_background_image(context, *background_bitmap, document().background_repeat(), move(background_rect));
}
}