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// Copyright 2014 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_DISPLAY_DISPLAY_UTIL_H_
#define ASH_DISPLAY_DISPLAY_UTIL_H_
#include <stdint.h>
#include <set>
#include <utility>
#include <vector>
#include "ash/ash_export.h"
#include "ash/display/display_layout.h"
namespace gfx {
class Display;
class Point;
class Rect;
class Size;
}
namespace ash {
class AshWindowTreeHost;
struct DisplayMode;
class DisplayInfo;
// Creates the display mode list for internal display
// based on |native_mode|.
ASH_EXPORT std::vector<DisplayMode> CreateInternalDisplayModeList(
const DisplayMode& native_mode);
// Creates the display mode list for unified display
// based on |native_mode| and |scales|.
ASH_EXPORT std::vector<DisplayMode> CreateUnifiedDisplayModeList(
const DisplayMode& native_mode,
const std::set<std::pair<float, float>>& dsf_scale_list);
// Gets the display mode for |resolution|. Returns false if no display
// mode matches the resolution, or the display is an internal display.
ASH_EXPORT bool GetDisplayModeForResolution(const DisplayInfo& info,
const gfx::Size& resolution,
DisplayMode* out);
// Gets the display mode for the next valid UI scale. Returns false
// if the display is not an internal display.
ASH_EXPORT bool GetDisplayModeForNextUIScale(const DisplayInfo& info,
bool up,
DisplayMode* out);
// Gets the display mode for the next valid resolution. Returns false
// if the display is an internal display.
ASH_EXPORT bool GetDisplayModeForNextResolution(const DisplayInfo& info,
bool up,
DisplayMode* out);
// Sets the UI scale for the |display_id|. Returns false if the
// display_id is not an internal display.
ASH_EXPORT bool SetDisplayUIScale(int64_t display_id, float scale);
// Tests if the |info| has display mode that matches |ui_scale|.
bool HasDisplayModeForUIScale(const DisplayInfo& info, float ui_scale);
// Computes the bounds that defines the bounds between two displays.
// Returns false if two displays does not intersect.
bool ComputeBoundary(const gfx::Display& primary_display,
const gfx::Display& secondary_display,
gfx::Rect* primary_edge_in_screen,
gfx::Rect* secondary_edge_in_screen);
// Creates edge bounds from |bounds_in_screen| that fits the edge
// of the native window for |ash_host|.
ASH_EXPORT gfx::Rect GetNativeEdgeBounds(AshWindowTreeHost* ash_host,
const gfx::Rect& bounds_in_screen);
// Moves the cursor to the point inside the |ash_host| that is closest to
// the point_in_screen, which may be outside of the root window.
// |update_last_loation_now| is used for the test to update the mouse
// location synchronously.
void MoveCursorTo(AshWindowTreeHost* ash_host,
const gfx::Point& point_in_screen,
bool update_last_location_now);
// Returns the index in the displays whose bounds contains |point_in_screen|.
// Returns -1 if no such display exist.
ASH_EXPORT int FindDisplayIndexContainingPoint(
const std::vector<gfx::Display>& displays,
const gfx::Point& point_in_screen);
// Sorts id list using |CompareDisplayIds| below.
ASH_EXPORT void SortDisplayIdList(DisplayIdList* list);
// Default id generator.
class DefaultDisplayIdGenerator {
public:
int64_t operator()(int64_t id) { return id; }
};
// Generate sorted DisplayIdList from iterators.
template <class ForwardIterator, class Generator = DefaultDisplayIdGenerator>
DisplayIdList GenerateDisplayIdList(ForwardIterator first,
ForwardIterator last,
Generator generator = Generator()) {
DisplayIdList list;
while (first != last) {
list.push_back(generator(*first));
++first;
}
SortDisplayIdList(&list);
return list;
}
// Creates sorted DisplayIdList.
ASH_EXPORT DisplayIdList CreateDisplayIdList(const DisplayList& list);
ASH_EXPORT std::string DisplayIdListToString(const DisplayIdList& list);
// Returns true if one of following conditinos is met.
// 1) id1 is internal.
// 2) output index of id1 < output index of id2 and id2 isn't internal.
ASH_EXPORT bool CompareDisplayIds(int64_t id1, int64_t id2);
} // namespace ash
#endif // ASH_DISPLAY_DISPLAY_UTIL_H_
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