Unified Desktop: Support 2xDSF display

ash/accelerators/accelerator_commands.cc

Index: ash/accelerators/accelerator_commands.cc
diff --git a/ash/accelerators/accelerator_commands.cc b/ash/accelerators/accelerator_commands.cc
index c49ed5020ea6440971f5a1a62e0ba7c7664c1136..83e5d26da67e54cc64b71153a6a45342691c6b42 100644
--- a/ash/accelerators/accelerator_commands.cc
+++ b/ash/accelerators/accelerator_commands.cc
@@ -4,6 +4,8 @@
 
 #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"
@@ -56,5 +58,52 @@ void ToggleTouchHudProjection() {
   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