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#include <LibGUI/GBoxLayout.h>
#include <LibGUI/GWidget.h>
//#define GBOXLAYOUT_DEBUG
GBoxLayout::GBoxLayout(Orientation orientation)
: m_orientation(orientation)
{
}
GBoxLayout::~GBoxLayout()
{
}
#if 0
Size GLayout::compute_preferred_size() const
{
}
static Size compute_preferred_size(GLayout::Entry& entry)
{
if (entry.layout)
return entry.layout->compute_preferred_size();
else {
return entry.widget->preferred_size();
}
}
#endif
void GBoxLayout::run(GWidget& widget)
{
if (m_entries.is_empty())
return;
Size available_size = widget.size();
int number_of_entries_with_fixed_size = 0;
for (auto& entry : m_entries) {
if (entry.widget && entry.widget->size_policy(orientation()) == SizePolicy::Fixed) {
available_size -= entry.widget->preferred_size();
++number_of_entries_with_fixed_size;
}
}
int number_of_entries_with_automatic_size = m_entries.size() - number_of_entries_with_fixed_size;
#ifdef GBOXLAYOUT_DEBUG
dbgprintf("GBoxLayout: available_size=%d, fixed=%d, fill=%d\n", available_size.height(), number_of_entries_with_fixed_size, number_of_entries_with_automatic_size);
#endif
Size automatic_size;
if (number_of_entries_with_automatic_size) {
if (m_orientation == Orientation::Horizontal) {
automatic_size.set_width(available_size.width() / number_of_entries_with_automatic_size);
automatic_size.set_height(widget.height());
} else {
automatic_size.set_width(widget.width());
automatic_size.set_height(available_size.height() / number_of_entries_with_automatic_size);
}
}
#ifdef GBOXLAYOUT_DEBUG
dbgprintf("GBoxLayout: automatic_size=%s\n", automatic_size.to_string().characters());
#endif
// FIXME: We should also respect the bottom and right margins.
int current_x = margins().left();
int current_y = margins().top();
for (auto& entry : m_entries) {
Rect rect(current_x, current_y, 0, 0);
if (entry.layout) {
// FIXME: Implement recursive layout.
ASSERT_NOT_REACHED();
}
ASSERT(entry.widget);
rect.set_size(automatic_size);
if (entry.widget->size_policy(Orientation::Vertical) == SizePolicy::Fixed)
rect.set_height(entry.widget->preferred_size().height());
if (entry.widget->size_policy(Orientation::Horizontal) == SizePolicy::Fixed)
rect.set_width(entry.widget->preferred_size().height());
#ifdef GBOXLAYOUT_DEBUG
dbgprintf("GBoxLayout: apply, %s{%p} <- %s\n", entry.widget->class_name(), entry.widget.ptr(), rect.to_string().characters());
#endif
entry.widget->set_relative_rect(rect);
if (orientation() == Orientation::Horizontal)
current_x += rect.width() + spacing();
else
current_y += rect.height() + spacing();
}
}
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