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// Copyright 2016 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 <stdint.h>
#include <set>
#include <vector>
#include "base/callback.h"
#include "base/macros.h"
#include "services/ui/display/platform_screen.h"
#include "ui/display/chromeos/display_configurator.h"
#include "ui/display/display.h"
namespace display {
// PlatformScreenOzone provides the necessary functionality to configure all
// attached physical displays on the ozone platform.
class PlatformScreenOzone : public PlatformScreen,
public ui::DisplayConfigurator::Observer {
~PlatformScreenOzone() override;
// PlatformScreen:
void Init(PlatformScreenDelegate* delegate) override;
int64_t GetPrimaryDisplayId() const override;
// TODO(kylechar): This struct is just temporary until we migrate
// DisplayManager code out of ash so it can be used here.
struct DisplayInfo {
DisplayInfo(int64_t new_id, const gfx::Rect& new_bounds)
: id(new_id), bounds(new_bounds) {}
int64_t id;
// The display bounds.
gfx::Rect bounds;
// The display bounds have been modified and delegate should be updated.
bool modified = false;
// The display has been removed and delegate should be updated.
bool removed = false;
using CachedDisplayIterator = std::vector<DisplayInfo>::iterator;
// Processes list of display snapshots and sets |removed| on any displays that
// have been removed. Updates |primary_display_id_| if the primary display was
// removed. Does not remove displays from |cached_displays_| or send updates
// to delegate.
void ProcessRemovedDisplays(
const ui::DisplayConfigurator::DisplayStateList& snapshots);
// Processes list of display snapshots and updates the bounds of any displays
// in |cached_displays_| that have changed size. Does not send updates to
// delegate.
void ProcessModifiedDisplays(
const ui::DisplayConfigurator::DisplayStateList& snapshots);
// Looks at |cached_displays_| for modified or removed displays. Also updates
// display bounds in response to modified or removed displays. Sends updates
// to the delegate when appropriate by calling OnDisplayModified() or
// OnDisplayRemoved(). Makes at most one call to delegate per display.
// Usually used after ProcessRemovedDisplays() and ProcessModifiedDisplays().
void UpdateCachedDisplays();
// Processes list of display snapshots and adds any new displays to
// |cached_displays_|. Updates delegate by calling OnDisplayAdded().
void AddNewDisplays(
const ui::DisplayConfigurator::DisplayStateList& snapshots);
// Returns an iterator to the cached display with |display_id| or an end
// iterator if there is no display with that id.
CachedDisplayIterator GetCachedDisplayIterator(int64_t display_id);
// ui::DisplayConfigurator::Observer:
void OnDisplayModeChanged(
const ui::DisplayConfigurator::DisplayStateList& displays) override;
void OnDisplayModeChangeFailed(
const ui::DisplayConfigurator::DisplayStateList& displays,
ui::MultipleDisplayState failed_new_state) override;
PlatformScreenDelegate* delegate_ = nullptr;
ui::DisplayConfigurator display_configurator_;
// TODO(kylechar): These values can/should be replaced by DisplayLayout.
int64_t primary_display_id_ = display::Display::kInvalidDisplayID;
std::vector<DisplayInfo> cached_displays_;
gfx::Point next_display_origin_;
} // namespace display