| // Copyright 2015 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 "services/ui/ws/window_finder.h" |
| |
| #include "base/containers/adapters.h" |
| #include "services/ui/ws/server_window.h" |
| #include "services/ui/ws/server_window_compositor_frame_sink_manager.h" |
| #include "services/ui/ws/server_window_delegate.h" |
| #include "services/ui/ws/window_coordinate_conversions.h" |
| #include "ui/gfx/geometry/point.h" |
| #include "ui/gfx/geometry/point_f.h" |
| #include "ui/gfx/transform.h" |
| |
| namespace ui { |
| namespace ws { |
| |
| bool IsValidWindowForEvents(ServerWindow* window) { |
| ServerWindowCompositorFrameSinkManager* compositor_frame_sink_manager = |
| window->compositor_frame_sink_manager(); |
| // Valid windows have at least one of the two surface types. Only an underlay |
| // is valid as we assume the window manager will likely get the event in this |
| // case. |
| return compositor_frame_sink_manager && |
| (compositor_frame_sink_manager->HasCompositorFrameSinkOfType( |
| mojom::CompositorFrameSinkType::DEFAULT) || |
| compositor_frame_sink_manager->HasCompositorFrameSinkOfType( |
| mojom::CompositorFrameSinkType::UNDERLAY)); |
| } |
| |
| ServerWindow* FindDeepestVisibleWindowForEvents(ServerWindow* window, |
| gfx::Point* location) { |
| if (!window->can_accept_events()) |
| return nullptr; |
| |
| const ServerWindow::Windows& children = window->children(); |
| for (ServerWindow* child : base::Reversed(children)) { |
| if (!child->visible() || !child->can_accept_events()) |
| continue; |
| |
| // TODO(sky): support transform. |
| gfx::Point child_location(location->x() - child->bounds().x(), |
| location->y() - child->bounds().y()); |
| gfx::Rect child_bounds(child->bounds().size()); |
| child_bounds.Inset(-child->extended_hit_test_region().left(), |
| -child->extended_hit_test_region().top(), |
| -child->extended_hit_test_region().right(), |
| -child->extended_hit_test_region().bottom()); |
| if (!child_bounds.Contains(child_location)) |
| continue; |
| |
| if (child->hit_test_mask() && |
| !child->hit_test_mask()->Contains(child_location)) |
| continue; |
| |
| *location = child_location; |
| ServerWindow* result = FindDeepestVisibleWindowForEvents(child, location); |
| if (IsValidWindowForEvents(result)) |
| return result; |
| } |
| return window; |
| } |
| |
| gfx::Transform GetTransformToWindow(ServerWindow* window) { |
| gfx::Transform transform; |
| ServerWindow* current = window; |
| while (current->parent()) { |
| transform.Translate(-current->bounds().x(), -current->bounds().y()); |
| current = current->parent(); |
| } |
| return transform; |
| } |
| |
| } // namespace ws |
| } // namespace ui |