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// Copyright (c) 2010 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "views/box_layout.h"
namespace views {
BoxLayout::BoxLayout(BoxLayout::Orientation orientation,
int inside_border_horizontal_spacing,
int inside_border_vertical_spacing,
int between_child_spacing)
: orientation_(orientation),
inside_border_horizontal_spacing_(inside_border_horizontal_spacing),
inside_border_vertical_spacing_(inside_border_vertical_spacing),
between_child_spacing_(between_child_spacing) {
}
void BoxLayout::Layout(View* host) {
gfx::Rect childArea(gfx::Rect(host->size()));
childArea.Inset(host->GetInsets());
childArea.Inset(inside_border_horizontal_spacing_,
inside_border_vertical_spacing_);
int x = childArea.x();
int y = childArea.y();
for (int i = 0; i < host->GetChildViewCount(); ++i) {
View* child = host->GetChildViewAt(i);
if (child->IsVisible()) {
gfx::Rect bounds(x, y, childArea.width(), childArea.height());
gfx::Size size(child->GetPreferredSize());
if (orientation_ == kHorizontal) {
bounds.set_width(size.width());
x += size.width() + between_child_spacing_;
} else {
bounds.set_height(size.height());
y += size.height() + between_child_spacing_;
}
// Clamp child view bounds to |childArea|.
child->SetBounds(bounds.Intersect(childArea));
}
}
}
gfx::Size BoxLayout::GetPreferredSize(View* host) {
gfx::Rect bounds;
int position = 0;
for (int i = 0; i < host->GetChildViewCount(); ++i) {
View* child = host->GetChildViewAt(i);
if (child->IsVisible()) {
gfx::Size size(child->GetPreferredSize());
if (orientation_ == kHorizontal) {
gfx::Rect child_bounds(position, 0, size.width(), size.height());
bounds = bounds.Union(child_bounds);
position += size.width();
} else {
gfx::Rect child_bounds(0, position, size.width(), size.height());
bounds = bounds.Union(child_bounds);
position += size.height();
}
position += between_child_spacing_;
}
}
gfx::Insets insets(host->GetInsets());
return gfx::Size(
bounds.width() + insets.width() + 2 * inside_border_horizontal_spacing_,
bounds.height() + insets.height() + 2 * inside_border_vertical_spacing_);
}
} // namespace views
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