Unified Desktop: Support 2xDSF display

ash/accelerators/accelerator_commands.cc

 // Copyright 2013 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/accelerators/accelerator_commands.h"
 
+#include "ash/display/display_manager.h"
+#include "ash/display/display_util.h"
 #include "ash/shell.h"
 #include "ash/shell_delegate.h"
 #include "ash/wm/mru_window_tracker.h"
 #include "ash/wm/window_state.h"
 #include "ash/wm/window_util.h"
 #include "ash/wm/wm_event.h"
 #include "base/metrics/user_metrics.h"
 
 namespace ash {
 namespace accelerators {
@@ skipping 32 matching lines @@
     window_state->OnWMEvent(&event);
   }
 }
 
 void ToggleTouchHudProjection() {
   base::RecordAction(base::UserMetricsAction("Accel_Touch_Hud_Clear"));
   bool enabled = Shell::GetInstance()->is_touch_hud_projection_enabled();
   Shell::GetInstance()->SetTouchHudProjectionEnabled(!enabled);
 }
 
+bool IsInternalDisplayZoomEnabled() {
+  DisplayManager* display_manager = Shell::GetInstance()->display_manager();
+  return display_manager->IsDisplayUIScalingEnabled() ||
+         display_manager->IsInUnifiedMode();
+}
+
+bool ZoomInternalDisplay(bool up) {
+  if (up)
+    base::RecordAction(base::UserMetricsAction("Accel_Scale_Ui_Up"));
+  else
+    base::RecordAction(base::UserMetricsAction("Accel_Scale_Ui_Down"));
+
+  DisplayManager* display_manager = Shell::GetInstance()->display_manager();
+
+  int64 display_id = display_manager->IsInUnifiedMode()
+                         ? DisplayManager::kUnifiedDisplayId
+                         : display_manager->GetDisplayIdForUIScaling();
+  const DisplayInfo& display_info = display_manager->GetDisplayInfo(display_id);
+  DisplayMode mode;
+
+  if (display_manager->IsInUnifiedMode()) {
+    if (!GetDisplayModeForNextResolution(display_info, up, &mode))
+      return false;
+  } else {
+    if (!GetDisplayModeForNextUIScale(display_info, up, &mode))
+      return false;
+  }
+  return display_manager->SetDisplayMode(display_id, mode);
+}
+
+void ResetInternalDisplayZoom() {
+  base::RecordAction(base::UserMetricsAction("Accel_Scale_Ui_Reset"));
+  DisplayManager* display_manager = Shell::GetInstance()->display_manager();
+
+  if (display_manager->IsInUnifiedMode()) {
+    const DisplayInfo& display_info =
+        display_manager->GetDisplayInfo(DisplayManager::kUnifiedDisplayId);
+    const std::vector<DisplayMode>& modes = display_info.display_modes();
+    auto iter =
+        std::find_if(modes.begin(), modes.end(),
+                     [](const DisplayMode& mode) { return mode.native; });
+    display_manager->SetDisplayMode(DisplayManager::kUnifiedDisplayId, *iter);
+  } else {
+    SetDisplayUIScale(display_manager->GetDisplayIdForUIScaling(), 1.0f);
+  }
+}
+
 }  // namespace accelerators
 }  // namespace ash