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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/system/tray/tray_background_view.h"
#include "ash/launcher/background_animator.h"
#include "ash/shell.h"
#include "ash/shell_window_ids.h"
#include "ash/system/tray/tray_constants.h"
#include "ui/aura/window.h"
#include "ui/gfx/canvas.h"
#include "ui/gfx/skia_util.h"
#include "ui/views/background.h"
#include "ui/views/layout/box_layout.h"
namespace {
const SkColor kTrayBackgroundAlpha = 100;
const SkColor kTrayBackgroundHoverAlpha = 150;
} // namespace
namespace ash {
namespace internal {
class TrayBackground : public views::Background {
public:
TrayBackground() : alpha_(kTrayBackgroundAlpha) {}
virtual ~TrayBackground() {}
void set_alpha(int alpha) { alpha_ = alpha; }
private:
// Overridden from views::Background.
virtual void Paint(gfx::Canvas* canvas, views::View* view) const OVERRIDE {
SkPaint paint;
paint.setAntiAlias(true);
paint.setStyle(SkPaint::kFill_Style);
paint.setColor(SkColorSetARGB(alpha_, 0, 0, 0));
SkPath path;
gfx::Rect bounds(view->bounds());
SkScalar radius = SkIntToScalar(kTrayRoundedBorderRadius);
path.addRoundRect(gfx::RectToSkRect(bounds), radius, radius);
canvas->DrawPath(path, paint);
}
int alpha_;
DISALLOW_COPY_AND_ASSIGN(TrayBackground);
};
////////////////////////////////////////////////////////////////////////////////
// TrayBackgroundView
TrayBackgroundView::TrayBackgroundView()
: shelf_alignment_(SHELF_ALIGNMENT_BOTTOM),
background_(NULL),
ALLOW_THIS_IN_INITIALIZER_LIST(hide_background_animator_(
this, 0, kTrayBackgroundAlpha)),
ALLOW_THIS_IN_INITIALIZER_LIST(hover_background_animator_(
this, 0, kTrayBackgroundHoverAlpha - kTrayBackgroundAlpha)) {
set_border(views::Border::CreateEmptyBorder(0, 0,
kPaddingFromBottomOfScreenBottomAlignment,
kPaddingFromRightEdgeOfScreenBottomAlignment));
set_notify_enter_exit_on_child(true);
// Initially we want to paint the background, but without the hover effect.
SetPaintsBackground(true, internal::BackgroundAnimator::CHANGE_IMMEDIATE);
hover_background_animator_.SetPaintsBackground(false,
internal::BackgroundAnimator::CHANGE_IMMEDIATE);
}
TrayBackgroundView::~TrayBackgroundView() {
}
void TrayBackgroundView::OnMouseEntered(const views::MouseEvent& event) {
hover_background_animator_.SetPaintsBackground(true,
internal::BackgroundAnimator::CHANGE_ANIMATE);
}
void TrayBackgroundView::OnMouseExited(const views::MouseEvent& event) {
hover_background_animator_.SetPaintsBackground(false,
internal::BackgroundAnimator::CHANGE_ANIMATE);
}
bool TrayBackgroundView::PerformAction(const views::Event& event) {
return false;
}
void TrayBackgroundView::UpdateBackground(int alpha) {
if (background_) {
background_->set_alpha(hide_background_animator_.alpha() +
hover_background_animator_.alpha());
}
SchedulePaint();
}
void TrayBackgroundView::SetContents(views::View* contents) {
background_ = new internal::TrayBackground;
contents->set_background(background_);
SetLayoutManager(new views::BoxLayout(views::BoxLayout::kVertical, 0, 0, 0));
AddChildView(contents);
}
void TrayBackgroundView::SetPaintsBackground(
bool value,
internal::BackgroundAnimator::ChangeType change_type) {
hide_background_animator_.SetPaintsBackground(value, change_type);
}
void TrayBackgroundView::SetShelfAlignment(ShelfAlignment alignment) {
shelf_alignment_ = alignment;
}
} // namespace internal
} // namespace ash
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