Show ChromeVox caption panel when spoken feedback is enabled.

ash/shelf/shelf_layout_manager.cc

 // 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/shelf/shelf_layout_manager.h"
 
 #include <algorithm>
 #include <cmath>
 #include <cstring>
 #include <string>
@@ skipping 178 matching lines @@
       alignment_(SHELF_ALIGNMENT_BOTTOM),
       shelf_(shelf),
       workspace_controller_(NULL),
       window_overlaps_shelf_(false),
       mouse_over_shelf_when_auto_hide_timer_started_(false),
       bezel_event_filter_(new ShelfBezelEventFilter(this)),
       gesture_drag_status_(GESTURE_DRAG_NONE),
       gesture_drag_amount_(0.f),
       gesture_drag_auto_hide_state_(SHELF_AUTO_HIDE_SHOWN),
       update_shelf_observer_(NULL),
+      chromevox_panel_height_(0),
       duration_override_in_ms_(0) {
   Shell::GetInstance()->AddShellObserver(this);
   Shell::GetInstance()->lock_state_controller()->AddObserver(this);
   aura::client::GetActivationClient(root_window_)->AddObserver(this);
   Shell::GetInstance()->session_state_delegate()->AddSessionStateObserver(this);
 }
 
 ShelfLayoutManager::~ShelfLayoutManager() {
   if (update_shelf_observer_)
     update_shelf_observer_->Detach();
@@ skipping 325 matching lines @@
     aura::Window* gained_active,
     aura::Window* lost_active) {
   UpdateAutoHideStateNow();
 }
 
 bool ShelfLayoutManager::IsHorizontalAlignment() const {
   return GetAlignment() == SHELF_ALIGNMENT_BOTTOM ||
          GetAlignment() == SHELF_ALIGNMENT_TOP;
 }
 
+void ShelfLayoutManager::SetChromeVoxPanelHeight(int height) {
+  chromevox_panel_height_ = height;
+  LayoutShelf();
+}
+
 // static
 ShelfLayoutManager* ShelfLayoutManager::ForShelf(aura::Window* window) {
   ShelfWidget* shelf = RootWindowController::ForShelf(window)->shelf();
   return shelf ? shelf->shelf_layout_manager() : NULL;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // ShelfLayoutManager, private:
 
 ShelfLayoutManager::TargetBounds::TargetBounds()
@@ skipping 273 matching lines @@
   }
 
   // Also push in the work area inset for the dock if it is visible.
   if (!dock_bounds_.IsEmpty()) {
     gfx::Insets dock_insets(
         0, (dock_bounds_.x() > 0 ? 0 : dock_bounds_.width()),
         0, (dock_bounds_.x() > 0 ? dock_bounds_.width() : 0));
     target_bounds->work_area_insets += dock_insets;
   }
 
+  // Also push in the work area insets for the ChromeVox panel if it's visible.
+  if (chromevox_panel_height_) {
+    gfx::Insets chromevox_insets(chromevox_panel_height_, 0, 0, 0);
+    target_bounds->work_area_insets += chromevox_insets;
+  }
+
   target_bounds->opacity =
       (gesture_drag_status_ == GESTURE_DRAG_IN_PROGRESS ||
        state.visibility_state == SHELF_VISIBLE ||
        state.visibility_state == SHELF_AUTO_HIDE) ? 1.0f : 0.0f;
   target_bounds->status_opacity =
       (state.visibility_state == SHELF_AUTO_HIDE &&
        state.auto_hide_state == SHELF_AUTO_HIDE_HIDDEN &&
        gesture_drag_status_ != GESTURE_DRAG_IN_PROGRESS) ?
       0.0f : target_bounds->opacity;
 
@@ skipping 346 matching lines @@
     return false;
   }
   if (session_state_delegate->IsUserSessionBlocked() ||
       state_.is_adding_user_screen) {
     return true;
   }
   return false;
 }
 
 }  // namespace ash