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// Copyright 2017 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.
#ifndef ASH_WM_SPLITVIEW_SPLIT_VIEW_UTILS_H_
#define ASH_WM_SPLITVIEW_SPLIT_VIEW_UTILS_H_
#include "ash/ash_export.h"
#include "ash/display/screen_orientation_controller.h"
#include "ui/gfx/geometry/rect.h"
#include "ui/gfx/transform.h"
namespace aura {
class Window;
} // namespace aura
namespace ui {
class Layer;
} // namespace ui
namespace ash {
// Enum of the different splitview mode animations. Sorted by type (fade/slide)
// then alphabetically.
enum SplitviewAnimationType {
// Used to fade in and out the highlights on either side which indicate where
// to drag a selector item.
SPLITVIEW_ANIMATION_HIGHLIGHT_FADE_IN,
SPLITVIEW_ANIMATION_HIGHLIGHT_FADE_OUT,
// Used to fade in and out the other highlight. There are normally two
// highlights, one on each side. When entering a state with a preview
// highlight, one highlight is the preview highlight, and the other highlight
// is the other highlight.
SPLITVIEW_ANIMATION_OTHER_HIGHLIGHT_FADE_IN,
SPLITVIEW_ANIMATION_OTHER_HIGHLIGHT_FADE_OUT,
// Used to fade in and out the preview area highlight which indicate the
// bounds of
// the window that is about to get snapped.
SPLITVIEW_ANIMATION_PREVIEW_AREA_FADE_IN,
SPLITVIEW_ANIMATION_PREVIEW_AREA_FADE_OUT,
// Used to fade in and out the label on the selector item which warns users
// the item cannot be snapped. The label appears on the selector item after
// another window has been snapped.
SPLITVIEW_ANIMATION_SELECTOR_ITEM_FADE_IN,
SPLITVIEW_ANIMATION_SELECTOR_ITEM_FADE_OUT,
// Used to fade in and out the labels which appear on either side of overview
// mode when a selector item is selected. They indicate where to drag the
// selector item if it is snappable, or if an item cannot be snapped.
SPLITVIEW_ANIMATION_TEXT_FADE_IN,
SPLITVIEW_ANIMATION_TEXT_FADE_OUT,
// Used when the text fades in or out with the highlights, as opposed to
// fading in when the highlights change bounds. Has slightly different
// animation values.
SPLITVIEW_ANIMATION_TEXT_FADE_IN_WITH_HIGHLIGHT,
SPLITVIEW_ANIMATION_TEXT_FADE_OUT_WITH_HIGHLIGHT,
// Used to slide in and out the other highlight.
SPLITVIEW_ANIMATION_OTHER_HIGHLIGHT_SLIDE_IN,
SPLITVIEW_ANIMATION_OTHER_HIGHLIGHT_SLIDE_OUT,
// Used to slide in and out the preview area highlight.
SPLITVIEW_ANIMATION_PREVIEW_AREA_SLIDE_IN_OUT,
// Used to slide in the text labels.
SPLITVIEW_ANIMATION_TEXT_SLIDE_IN,
SPLITVIEW_ANIMATION_TEXT_SLIDE_OUT,
// Used to apply window transform on the selector item after it gets snapped
// or on the dragged window after the drag ends.
SPLITVIEW_ANIMATION_SET_WINDOW_TRANSFORM,
};
// Animates |layer|'s opacity based on |type|.
void DoSplitviewOpacityAnimation(ui::Layer* layer, SplitviewAnimationType type);
// Animates |layer|'s transform based on |type|.
void DoSplitviewTransformAnimation(ui::Layer* layer,
SplitviewAnimationType type,
const gfx::Transform& target_transform);
// Returns true if split view mode is supported. Currently the split view
// mode is only supported in tablet mode.
ASH_EXPORT bool ShouldAllowSplitView();
// Returns true if |window| can be activated and snapped in split screen in
// tablet mode.
ASH_EXPORT bool CanSnapInSplitview(aura::Window* window);
} // namespace ash
#endif // ASH_WM_SPLITVIEW_SPLIT_VIEW_UTILS_H_