New accessibility virtual keyboard behavior in non-sticky mode.

ui/wm/core/ime_util_chromeos.cc

+// Copyright 2017 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 "ui/wm/core/ime_util_chromeos.h"
+
+#include "base/command_line.h"
+#include "ui/aura/client/aura_constants.h"
+#include "ui/base/ui_base_switches.h"
+#include "ui/gfx/geometry/rect.h"
+#include "ui/wm/core/coordinate_conversion.h"
+
+namespace wm {
+namespace {
+
+// Moves the window to ensure caret not in rect.
+// Returns whether the window was moved or not.
+void MoveWindowToEnsureCaretNotInRect(aura::Window* window,
+                                      const gfx::Rect& rect_in_screen) {
+  gfx::Rect original_window_bounds = window->GetBoundsInScreen();
+  if (window->GetProperty(kVirtualKeyboardRestoreBoundsKey)) {
+    original_window_bounds =
+        *window->GetProperty(kVirtualKeyboardRestoreBoundsKey);
+  }
+
+  // Calculate vertical window shift.
+  gfx::Rect rect_in_root_window = rect_in_screen;
+  ::wm::ConvertRectFromScreen(window->GetRootWindow(), &rect_in_root_window);
+  gfx::Rect bounds_in_root_window = original_window_bounds;
+  ::wm::ConvertRectFromScreen(window->GetRootWindow(), &bounds_in_root_window);
+  const int top_y =
+      std::max(rect_in_root_window.y() - bounds_in_root_window.height(), 0);
+
+  // No need to move the window up.
+  if (top_y >= bounds_in_root_window.y())
+    return;
+
+  // Set restore bounds and move the window.
+  window->SetProperty(kVirtualKeyboardRestoreBoundsKey,
+                      new gfx::Rect(original_window_bounds));
+
+  gfx::Rect new_bounds_in_root_window = bounds_in_root_window;
+  new_bounds_in_root_window.set_y(top_y);
+  window->SetBounds(new_bounds_in_root_window);
+}
+
+}  // namespace
+
+DEFINE_OWNED_UI_CLASS_PROPERTY_KEY(gfx::Rect,
+                                   kVirtualKeyboardRestoreBoundsKey,
+                                   nullptr);
+
+void RestoreWindowBoundsOnClientFocusLost(aura::Window* window) {
+  if (!base::CommandLine::ForCurrentProcess()->HasSwitch(
+          ::switches::kUseNewVirtualKeyboardBehavior))
+    return;
+
+  // Get restore bounds of the window
+  gfx::Rect* vk_restore_bounds =
+      window->GetProperty(kVirtualKeyboardRestoreBoundsKey);
+
+  if (!vk_restore_bounds)
+    return;
+
+  // Restore the window bounds
+  // TODO(yhanada): Don't move the window if a user has moved it while the
+  // keyboard is shown.
+  if (window->GetBoundsInScreen() != *vk_restore_bounds) {
+    gfx::Rect original_bounds = *vk_restore_bounds;
+    ::wm::ConvertRectFromScreen(window->GetRootWindow(), &original_bounds);
+    window->SetBounds(original_bounds);
+  }
+  window->ClearProperty(wm::kVirtualKeyboardRestoreBoundsKey);
+}
+
+void EnsureWindowNotInRect(aura::Window* window,
+                           const gfx::Rect& rect_in_screen) {
+  if (!base::CommandLine::ForCurrentProcess()->HasSwitch(
+          ::switches::kUseNewVirtualKeyboardBehavior))
+    return;
+
+  gfx::Rect original_window_bounds = window->GetBoundsInScreen();
+  if (window->GetProperty(wm::kVirtualKeyboardRestoreBoundsKey)) {
+    original_window_bounds =
+        *window->GetProperty(wm::kVirtualKeyboardRestoreBoundsKey);
+  }
+
+  gfx::Rect hidden_window_bounds_in_screen =
+      gfx::IntersectRects(rect_in_screen, original_window_bounds);
+  if (hidden_window_bounds_in_screen.IsEmpty()) {
+    // The window isn't covered by the keyboard, restore the window position if
+    // necessary.
+    RestoreWindowBoundsOnClientFocusLost(window);
+    return;
+  }
+
+  MoveWindowToEnsureCaretNotInRect(window, rect_in_screen);
+}
+
+}  // namespace wm