Haptic feedback when dragging apps in launcher and shelf

Starting drag in the app list and shelf now fires haptics (tick).
Adapts app list and shelf drag tests to also verify haptics are
triggered when the drag starts (when dragging items using a mouse
pointer).

To ease test setup, moves input controller that tracks fired haptics
from haptics_util_unittests to a designated file, so it can be reused
in other tests.

BUG=1312575

Change-Id: I947630cc47ff112699c0a95431e4cccd9b394ce9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3566798
Reviewed-by: Sammie Quon <sammiequon@chromium.org>
Reviewed-by: Ahmed Fakhry <afakhry@chromium.org>
Commit-Queue: Toni Barzic <tbarzic@chromium.org>
Cr-Commit-Position: refs/heads/main@{#989234}

ash/BUILD.gn

@@ -3166,6 +3166,8 @@ static_library("test_support") {
     "system/geolocation/test_geolocation_url_loader_factory.h",
     "test/layer_animation_stopped_waiter.cc",
     "test/layer_animation_stopped_waiter.h",
+    "utility/haptics_tracking_test_input_controller.cc",
+    "utility/haptics_tracking_test_input_controller.h",
 
     # These headers declare functions that are implemented inside of //ash, so
     # they cannot live in //ash/public/cpp/BUILD.gn.
@@ -3351,6 +3353,7 @@ static_library("test_support") {
     "//ui/gl:test_support",
     "//ui/message_center",
     "//ui/message_center/public/cpp",
+    "//ui/ozone",
     "//ui/platform_window/common",
     "//ui/shell_dialogs",
     "//ui/views",

ash/app_list/BUILD.gn

@@ -207,6 +207,7 @@ source_set("app_list") {
     "//ui/display",
     "//ui/display/manager",
     "//ui/events",
+    "//ui/events/devices",
     "//ui/gfx",
     "//ui/gfx/geometry",
     "//ui/native_theme",

ash/app_list/views/apps_grid_view.cc

@@ -37,6 +37,7 @@
 #include "ash/public/cpp/app_list/app_list_switches.h"
 #include "ash/public/cpp/metrics_util.h"
 #include "ash/strings/grit/ash_strings.h"
+#include "ash/utility/haptics_util.h"
 #include "base/bind.h"
 #include "base/callback_helpers.h"
 #include "base/cxx17_backports.h"
@@ -54,6 +55,7 @@
 #include "ui/compositor/layer.h"
 #include "ui/display/display.h"
 #include "ui/display/screen.h"
+#include "ui/events/devices/haptic_touchpad_effects.h"
 #include "ui/events/event.h"
 #include "ui/gfx/animation/animation.h"
 #include "ui/gfx/geometry/transform_util.h"
@@ -590,9 +592,16 @@ void AppsGridView::TryStartDragAndDropHostDrag(Pointer pointer) {
 
   drag_pointer_ = pointer;
 
-  if (!dragging_for_reparent_item_)
+  if (!dragging_for_reparent_item_) {
     StartDragAndDropHostDrag();
 
+    if (pointer == MOUSE) {
+      haptics_util::PlayHapticTouchpadEffect(
+          ui::HapticTouchpadEffect::kTick,
+          ui::HapticTouchpadEffectStrength::kMedium);
+    }
+  }
+
   if (drag_start_callback_)
     std::move(drag_start_callback_).Run();
 }

ash/shelf/shelf_view.cc

@@ -38,6 +38,7 @@
 #include "ash/strings/grit/ash_strings.h"
 #include "ash/style/ash_color_provider.h"
 #include "ash/system/status_area_widget.h"
+#include "ash/utility/haptics_util.h"
 #include "ash/wm/desks/desks_util.h"
 #include "ash/wm/mru_window_tracker.h"
 #include "ash/wm/tablet_mode/tablet_mode_controller.h"
@@ -68,6 +69,7 @@
 #include "ui/compositor/scoped_animation_duration_scale_mode.h"
 #include "ui/compositor/scoped_layer_animation_settings.h"
 #include "ui/display/scoped_display_for_new_windows.h"
+#include "ui/events/devices/haptic_touchpad_effects.h"
 #include "ui/events/event_utils.h"
 #include "ui/gfx/canvas.h"
 #include "ui/gfx/geometry/point.h"
@@ -1521,6 +1523,12 @@ void ShelfView::PrepareForDrag(Pointer pointer, const ui::LocatedEvent& event) {
         root_window, drag_view_->GetImage(), screen_location, gfx::Vector2d(),
         /*scale_factor=*/1.0f,
         /*use_blurred_background=*/false);
+
+    if (pointer == MOUSE) {
+      haptics_util::PlayHapticTouchpadEffect(
+          ui::HapticTouchpadEffect::kTick,
+          ui::HapticTouchpadEffectStrength::kMedium);
+    }
   }
 }