blob: cc3739c444c59da3a0a1c1757319229459f20408 [file] [log] [blame]
// 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/surfaces/surfaces_state.h"
#include "services/ui/ws/server_window.h"
#include "services/ui/ws/server_window_delegate.h"
#include "services/ui/ws/server_window_surface.h"
#include "services/ui/ws/server_window_surface_manager.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) {
ServerWindowSurfaceManager* surface_manager = window->surface_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 surface_manager &&
(surface_manager->HasSurfaceOfType(mojom::SurfaceType::DEFAULT) ||
surface_manager->HasSurfaceOfType(mojom::SurfaceType::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