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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/display/screen_position_controller.h"
- #include "ash/public/cpp/shell_window_ids.h"
- #include "ash/shell.h"
- #include "ash/wm/window_positioning_utils.h"
- #include "ash/wm/window_properties.h"
- #include "ash/wm/window_state.h"
- #include "ui/aura/client/screen_position_client.h"
- #include "ui/aura/window.h"
- #include "ui/aura/window_tree_host.h"
- #include "ui/display/display.h"
- #include "ui/display/screen.h"
- #include "ui/wm/core/window_properties.h"
- #include "ui/wm/core/window_util.h"
- namespace ash {
- // static
- void ScreenPositionController::ConvertHostPointToRelativeToRootWindow(
- aura::Window* root_window,
- const aura::Window::Windows& root_windows,
- gfx::Point* point,
- aura::Window** target_root) {
- DCHECK(!root_window->parent());
- gfx::Point point_in_root(*point);
- root_window->GetHost()->ConvertPixelsToDIP(&point_in_root);
- gfx::Rect host_bounds(root_window->GetHost()->GetBoundsInPixels().size());
- if (!host_bounds.Contains(*point)) {
- // This conversion is necessary to deal with X's passive input
- // grab while dragging window. For example, if we have two
- // displays, say 1000x1000 (primary) and 500x500 (extended one
- // on the right), and start dragging a window at (999, 123), and
- // then move the pointer to the right, the pointer suddenly
- // warps to the extended display. The destination is (0, 123) in
- // the secondary root window's coordinates, or (1000, 123) in
- // the screen coordinates. However, since the mouse is captured
- // by X during drag, a weird LocatedEvent, something like (0, 1123)
- // in the *primary* root window's coordinates, is sent to Chrome
- // (Remember that in the native X11 world, the two root windows
- // are always stacked vertically regardless of the display
- // layout in Ash). We need to figure out that (0, 1123) in the
- // primary root window's coordinates is actually (0, 123) in the
- // extended root window's coordinates.
- //
- // For now Ozone works in a similar manner as X11. Transitioning from one
- // display's coordinate system to anothers may cause events in the
- // primary's coordinate system which fall in the extended display.
- gfx::Point location_in_native(*point);
- // |point| is in the native host window coordinate. Convert it to the native
- // screen coordinate.
- const gfx::Point host_origin =
- root_window->GetHost()->GetBoundsInPixels().origin();
- location_in_native.Offset(host_origin.x(), host_origin.y());
- for (size_t i = 0; i < root_windows.size(); ++i) {
- aura::WindowTreeHost* host = root_windows[i]->GetHost();
- const gfx::Rect native_bounds = host->GetBoundsInPixels();
- if (native_bounds.Contains(location_in_native)) {
- *target_root = root_windows[i];
- *point = location_in_native;
- host->ConvertScreenInPixelsToDIP(point);
- return;
- }
- }
- }
- *target_root = root_window;
- *point = point_in_root;
- }
- void ScreenPositionController::ConvertPointToScreen(const aura::Window* window,
- gfx::PointF* point) {
- const aura::Window* root = window->GetRootWindow();
- aura::Window::ConvertPointToTarget(window, root, point);
- const gfx::Point display_origin =
- display::Screen::GetScreen()
- ->GetDisplayNearestWindow(const_cast<aura::Window*>(root))
- .bounds()
- .origin();
- point->Offset(display_origin.x(), display_origin.y());
- }
- void ScreenPositionController::ConvertPointFromScreen(
- const aura::Window* window,
- gfx::PointF* point) {
- const aura::Window* root = window->GetRootWindow();
- const gfx::Point display_origin =
- display::Screen::GetScreen()
- ->GetDisplayNearestWindow(const_cast<aura::Window*>(root))
- .bounds()
- .origin();
- point->Offset(-display_origin.x(), -display_origin.y());
- aura::Window::ConvertPointToTarget(root, window, point);
- }
- void ScreenPositionController::ConvertHostPointToScreen(
- aura::Window* root_window,
- gfx::Point* point) {
- aura::Window* root = root_window->GetRootWindow();
- aura::Window* target_root = nullptr;
- ConvertHostPointToRelativeToRootWindow(root, Shell::GetAllRootWindows(),
- point, &target_root);
- aura::client::ScreenPositionClient::ConvertPointToScreen(target_root, point);
- }
- void ScreenPositionController::SetBounds(aura::Window* window,
- const gfx::Rect& bounds,
- const display::Display& display) {
- if (!window->parent()->GetProperty(::wm::kUsesScreenCoordinatesKey)) {
- window->SetBounds(bounds);
- return;
- }
- SetBoundsInScreen(window, bounds, display);
- }
- gfx::Point ScreenPositionController::GetRootWindowOriginInScreen(
- const aura::Window* root_window) {
- DCHECK(root_window->IsRootWindow());
- const display::Display& display =
- display::Screen::GetScreen()->GetDisplayNearestWindow(
- const_cast<aura::Window*>(root_window));
- return display.bounds().origin();
- }
- } // namespace ash
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