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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* 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 <LibWeb/Dump.h>
#include <LibWeb/Frame/Frame.h>
#include <LibWeb/Layout/LayoutDocument.h>
#include <LibWeb/Layout/LayoutImage.h>
#include <LibWeb/Layout/LayoutWidget.h>
#include <LibWeb/Painting/StackingContext.h>
namespace Web {
LayoutDocument::LayoutDocument(DOM::Document& document, NonnullRefPtr<CSS::StyleProperties> style)
: LayoutBlock(document, &document, move(style))
{
}
LayoutDocument::~LayoutDocument()
{
}
void LayoutDocument::build_stacking_context_tree()
{
if (stacking_context())
return;
set_stacking_context(make<StackingContext>(*this, nullptr));
for_each_in_subtree_of_type<LayoutBox>([&](LayoutBox& box) {
if (&box == this)
return IterationDecision::Continue;
if (!box.establishes_stacking_context()) {
ASSERT(!box.stacking_context());
return IterationDecision::Continue;
}
auto* parent_context = box.enclosing_stacking_context();
ASSERT(parent_context);
box.set_stacking_context(make<StackingContext>(box, parent_context));
return IterationDecision::Continue;
});
}
void LayoutDocument::layout(LayoutMode layout_mode)
{
build_stacking_context_tree();
set_width(frame().size().width());
LayoutNode::layout(layout_mode);
ASSERT(!children_are_inline());
float lowest_bottom = 0;
for_each_child([&](auto& child) {
ASSERT(is<LayoutBlock>(child));
auto& child_block = downcast<LayoutBlock>(child);
lowest_bottom = max(lowest_bottom, child_block.absolute_rect().bottom());
});
set_height(lowest_bottom);
layout_absolutely_positioned_descendants();
// FIXME: This is a total hack. Make sure any GUI::Widgets are moved into place after layout.
// We should stop embedding GUI::Widgets entirely, since that won't work out-of-process.
for_each_in_subtree_of_type<LayoutWidget>([&](auto& widget) {
widget.update_widget();
return IterationDecision::Continue;
});
}
void LayoutDocument::did_set_viewport_rect(Badge<Frame>, const Gfx::IntRect& a_viewport_rect)
{
Gfx::FloatRect viewport_rect(a_viewport_rect.x(), a_viewport_rect.y(), a_viewport_rect.width(), a_viewport_rect.height());
for_each_in_subtree_of_type<LayoutImage>([&](auto& layout_image) {
const_cast<LayoutImage&>(layout_image).set_visible_in_viewport({}, viewport_rect.intersects(layout_image.absolute_rect()));
return IterationDecision::Continue;
});
}
void LayoutDocument::paint_all_phases(PaintContext& context)
{
paint(context, PaintPhase::Background);
paint(context, PaintPhase::Border);
paint(context, PaintPhase::Foreground);
paint(context, PaintPhase::Overlay);
}
void LayoutDocument::paint(PaintContext& context, PaintPhase phase)
{
stacking_context()->paint(context, phase);
}
HitTestResult LayoutDocument::hit_test(const Gfx::IntPoint& position) const
{
return stacking_context()->hit_test(position);
}
}
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