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// Copyright (c) 2012 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 "ash/wm/default_window_resizer.h"
#include "ash/shell.h"
#include "ash/wm/root_window_event_filter.h"
#include "ui/aura/client/aura_constants.h"
#include "ui/aura/root_window.h"
#include "ui/aura/window.h"
#include "ui/aura/window_delegate.h"
#include "ui/base/hit_test.h"
#include "ui/base/ui_base_types.h"
#include "ui/gfx/compositor/layer.h"
#include "ui/gfx/compositor/scoped_layer_animation_settings.h"
#include "ui/gfx/screen.h"
namespace ash {
DefaultWindowResizer::~DefaultWindowResizer() {
if (root_filter_)
root_filter_->UnlockCursor();
}
// static
DefaultWindowResizer*
DefaultWindowResizer::Create(aura::Window* window,
const gfx::Point& location,
int window_component) {
Details details(window, location, window_component);
return details.is_resizable ? new DefaultWindowResizer(details) : NULL;
}
void DefaultWindowResizer::Drag(const gfx::Point& location, int event_flags) {
int grid_size = event_flags & ui::EF_CONTROL_DOWN ?
0 : ash::Shell::GetInstance()->GetGridSize();
gfx::Rect bounds(CalculateBoundsForDrag(details_, location, grid_size));
if (bounds != details_.window->bounds()) {
did_move_or_resize_ = true;
details_.window->SetBounds(bounds);
}
}
void DefaultWindowResizer::CompleteDrag(int event_flags) {
int grid_size = event_flags & ui::EF_CONTROL_DOWN ?
0 : ash::Shell::GetInstance()->GetGridSize();
if (grid_size <= 1 || !did_move_or_resize_)
return;
gfx::Rect new_bounds(
AdjustBoundsToGrid(details_.window->bounds(), grid_size));
if (new_bounds == details_.window->bounds())
return;
if (new_bounds.size() != details_.window->bounds().size()) {
// Don't attempt to animate a size change.
details_.window->SetBounds(new_bounds);
return;
}
ui::ScopedLayerAnimationSettings scoped_setter(
details_.window->layer()->GetAnimator());
// Use a small duration since the grid is small.
scoped_setter.SetTransitionDuration(base::TimeDelta::FromMilliseconds(100));
details_.window->SetBounds(new_bounds);
}
void DefaultWindowResizer::RevertDrag() {
if (!did_move_or_resize_)
return;
details_.window->SetBounds(details_.initial_bounds);
}
DefaultWindowResizer::DefaultWindowResizer(const Details& details)
: details_(details),
did_move_or_resize_(false),
root_filter_(NULL) {
DCHECK(details_.is_resizable);
root_filter_ = Shell::GetInstance()->root_filter();
if (root_filter_)
root_filter_->LockCursor();
}
} // namespace aura
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