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LibGUI: Start adding an automatic widget layout system.

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My needs are really quite simple, so I'm just going to add what I need
as I go along. The first thing I needed was a simple box layout with
widgets being able to say whether they prefer fixed or fill for both
their vertical and horizontal sizes.

I also made a simple GStatusBar so FileManager can show how many bytes
worth of files are in the current directory.
This commit is contained in:
Andreas Kling 2019-02-10 11:07:13 +01:00
parent 2cf1dd5b6f
commit 2def3d8d3f
22 changed files with 411 additions and 29 deletions
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41
LibGUI/GLayout.cpp Normal file
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@ -0,0 +1,41 @@
#include <LibGUI/GLayout.h>
#include <LibGUI/GWidget.h>
GLayout::GLayout()
{
}
GLayout::~GLayout()
{
}
void GLayout::notify_adopted(Badge<GWidget>, GWidget& widget)
{
if (m_owner.ptr() == &widget)
return;
m_owner = widget.make_weak_ptr();
}
void GLayout::notify_disowned(Badge<GWidget>, GWidget& widget)
{
ASSERT(m_owner.ptr() == &widget);
m_owner.clear();
}
void GLayout::add_layout(OwnPtr<GLayout>&& layout)
{
Entry entry;
entry.layout = move(layout);
m_entries.append(move(entry));
if (m_owner)
m_owner->notify_layout_changed(Badge<GLayout>());
}
void GLayout::add_widget(GWidget& widget)
{
Entry entry;
entry.widget = widget.make_weak_ptr();
m_entries.append(move(entry));
if (m_owner)
m_owner->notify_layout_changed(Badge<GLayout>());
}